Honeywell SDC Thermostat User Manual

SDC / DHC

Software version

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1

2

Software version

This documentation is valid for software version V 3.0 of your

control device. The software version is displayed after switch-on

for approx. 8 s. If you are using an older software version, please

contact your heating technician.

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Safety instructions

2

.1 Intended use

The SDC / DHC Smile family of controllers was designed for the

sole purpose of regulating and controlling hot-water, heating and

district heating systems (including hot-water production) that do

not exceed a maximum flow temperature of 120 °C.

2.2 Requirements for start-up

ATTENTION

The heating system must be complete and filled with water

so that the pumps do not run dry and the heating boiler is not

damaged.

The control equipment must be installed in accordance with

the installation instructions.

All electrical connections (voltage supply, burner, mixer

motor, pumps, sensor wiring etc.) must be carried out by the

technician in accordance with the applicable VDE regulations

and correspond with the circuit diagrams.

If floor heating is connected, a limiting thermostat must also

be installed in the flow line after the heating circuit pump.

This switches off the pumps at excessive flow temperatures.

Before starting up the controller, have the heating technician

check all requirements listed above.

NOTE The current time and date are already set at the factory and are

backed up by a battery.

The time switch functions based on a basic program and the

control functions are preset for common heating systems with low-

temperature boilers.

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Safety instructions

SDC / DHC

2.2.1 Power supply

Do not disconnect the controller from the mains supply!

The battery for saving all individualised data is otherwise

unnecessarily strained. The frost-protection function of the

controller is deactivated.

2.2.2 Connection conditions

All electrical connection work may only be carried out by qualified

personnel!

2.2.3 Cable cross-sections

2

1

.5 mm for all cables carrying 230 V (power supply, burner,

pumps, actuator).

2

0

.6 mm for bus cables (recommended type J-Y(St)Y 2 x 0.6)

2

0

.5 mm for sensors, selectors and analog signal cables.

2

.2.4 Maximum cable lengths

Sensor, selector and analog inputs

We recommend using cables no longer than 200 m. Longer

connection lines could be used, but increase the risk of

interference.

Relay outputs

Unlimited cable length.

Bus connections

Max. length of 100 m from the first bus subscriber to the last one

(incl. wall modules).

2.2.5 Cable installation

Install cables for sensors apart from the cables carrying 230 V!

Branch boxes in the sensor cable must be avoided!

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SDC / DHC

Safety instructions

2.2.6 Grounding and zeroing

Local regulations on the connection of equipment must be

observed!

2

.3 Hot-water temperature greater than 60 °C

ATTENTION

Note that there is a danger of scalding at all hot-water draw-

off points (kitchen, bathroom etc.) in the following cases.

Add sufficient cold water in these cases.

Automatic anti- When the automatic anti-legionella mechanism is activated, the

legionella mechanism hot water is automatically heated to the anti-legionella

temperature (65 °C at the factory) on the selected day and at the

selected time to kill any legionella bacteria found in the hot-water

tank.

Manual mode / In the manual mode / emission measurement operating mode, the

Emission hot water is heated up to the highest possible boiler temperature,

measurement as the burner and all pumps are switched on and the mixer is

opened fully. There is an acute danger of scalding at all

connected hot-water draw-off points! Add sufficient cold water or

switch off the hot-water loading pump (at the switch of the pump,

if present). Heating and hot water are in unregulated continuous

operation. This operating mode is for special use by the chimney

sweep for emission measurement or if the controller is defective.

The high hot-water temperatures can be prevented, however, by

setting the boiler thermostat to a max. boiler temperature of

approx. 60 °C.

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Safety instructions

SDC / DHC

2

.4 Connection of accessory parts

WARNING

According to VDE 0730, a separator for each mains terminal

is to be provided in the voltage supply to the control

equipment. Observe the local regulations regarding

grounding and zeroing.

As soon as the mains voltage is applied to terminals 21, 22,

2, 6, 12 and 18, headers X3 and X4 can also carry mains

voltage.

If the heating circuit and hot-water loading pumps do not

have an On / Off switch, but manual switch-on and switch-off

capability is still desired, the appropriate switches must be

installed by the customer. All accessory parts (sensors,

selectors etc.) are to be connected to the respective circuit

diagram.

2.5 Maintenance and cleaning

The controller is maintenance-free. The device can be cleaned

externally with a moist (not wet) cloth.

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EN2H-0220GE51 R0308

SDC / DHC

Overview

3

Overview

The modular SDC / DHC control device is available in an

installable switch cabinet version and a surface-mounted wall

version with the following equipment features:

Type

3

7

–

x

–

x

–

SDC 3-10

SDC 3-40

SDC 7-21

–

x

–

1

2

)

x

7

+

x

two

SDC 9-21

variable

relays

1

0

x

+

two

3)

SDC 12-31

variable

relays

1)

2)

3)

DHC 43-1

DHC 43-2

DHC 43-3

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Operation

SDC / DHC

4

Operation

4.1 Display and operating elements

5

1

6

2

3

4

7

8

9

11

10

1

"Manual mode" / "Emission measurement" button (not on

district heating controllers)

2

3

4

5

6

7

8

9

1

"Operating modes" button (basic display)

"Switching time programs" / "Holiday programs" button

"System information" button

Display

Cover clip for service socket

"Daytime room temperature" button

"Night-time room temperature" button

"Daytime hot-water temperature" button

0 Input button (press / turn)

1 Operating mode symbols (heating programs)

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12

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SDC / DHC

Operation

4.1.1 Display (basic display)

1

C

5

2

3

4

1

2

3

Day of the week / Date

Time

4

5

Operating mode symbols

Heat generator temperature

Active operating mode

The illumination of the display is switched on by pressing any

button or using the input button îand switches off automatically

if no buttons are pressed for a longer period of time.

During start-up of the unit and after a power failure, a segment

test with automatic fault diagnosis is carried out. The respective

device type and the software version number then appear briefly.

The basic display that then appears shows the day of the week,

the date, the time and the heat generator temperature in

automatic mode. Different values appear in the basic display

depending on the set operating mode (AUTOMATIC, PARTY

etc.). Thus, for example, in the ABSENT operating mode, the

indication ABSENT TIL appears instead of the date and the return

date instead of the temperature. Active summer deactivation is

indicated by a beach umbrella symbol À, and active frost

protection is indicated by a snowflake symbol Á.

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Operation

SDC / DHC

4.1.2 Operating elements

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4.1.2.1 Input button (press / turn)

By pressing once, you can:

^ð•

Confirm input / values

By pressing and holding (approx. 3 s), you can:

•

Switch to the menu-selection level

Move up one menu level

By turning the input button î, you can:

•

Change values (clockwise increases called-up values,

anticlockwise decreases them)

•

Navigate through menus

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4.1.2.2 "Daytime room temperature" button

Sets the desired room temperature (room setpoint) in automatic

¥

mode during the heating cycles and in the PARTY and HEATING

operating modes. In operating mode 1, the set value for all

heating circuits is the same. In operating mode 2, the set value

applies for the respective heating circuit. To set the operating

mode, see 4.2.3.3 Operating mode, pg. 52.

Setting

►

Press ¥button.

Set flashing room temperature specification to the desired

value by turning the input button î.

C

►

Confirm set value by pressing the ¥button or the input

button î.

Alternative: Automatic acceptance of the value after the set

information time (see 4.1.2.7 "System information" button, pg. 26).

Factory setting 20 °C

Setting range 5 ... 30 °C

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SDC / DHC

Operation

4.1.2.3 "Night-time room temperature" button

Sets the lowered room temperature in automatic mode between

the heating cycles and in the ABSENT and RED. HEATING

operating modes.

¦

In operating mode 1, the set value for all heating circuits is the

same. In operating mode 2, the set value applies for the

respective heating circuit. To set the operating mode, see

4.2.3.3 Operating mode, pg. 52.

Setting

►

Press ¦button.

Set flashing room temperature specification to the desired

value by turning the input button î.

C

►

Confirm set value by pressing the ¦button or the input

button î.

Alternative: Automatic acceptance of the value after the set

information time (see 4.1.2.7 "System information" button, pg. 26).

Factory setting 16 °C

Setting range 5 ... 30 °C

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4.1.2.4 "Daytime hot-water temperature" button

Sets the daytime hot-water temperature during the hot-water

§

operational-readiness times in automatic mode and in the PARTY

and HEATING operating modes. This set value also applies for

exclusively hot-water operation (manual summer operation).

Setting

►

Press §button.

Set flashing hot-water temperature to the desired value by

turning the input button î.

C

►

Confirm set value by pressing the §button or the input

button î.

Alternative: Automatic acceptance of the value after the set

information time (see 4.1.2.7 "System information" button, pg. 26).

Factory setting 50 °C

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Operation

SDC / DHC

Setting range 5 °C (hot-water economy temperature) ... Maximum hot-water

heater temperature limit (service setting)

One-time hot-water

circuit loading

Pressing and holding (approx. 3 s) the §button brings you to

the reload function, where the reload time can be set in minutes.

With a reload time of 0 minutes, loading is started once and the

hot-water tank is loaded to the daytime setpoint. The time for this

superimposed hot-water circuit loading can be set between 0 and

240 minutes. The current week program is superimposed here.

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4

.1.2.5 "Operating mode" button (basic display)

Sets the operating mode and returns to the basic display from

every operating level.

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SDC / DHC

Operation

Overview of the operating modes

Operating mode Display

Symbol

Setting

ABSENT

P1 (P2, P3)*, return

date

ç

PARTY

P1 (P2, P3)*,

party end time

è

é

AUTOMATIC

SUMMER

HEATING

RED. HEATING

STANDBY

P1 (P2, P3)*

P1(P2, P3)*

C

ê

ë

ì

í

*

P2 and P3 only after enabling, see "System Parameters"

menu, parameter 2 = P1 to P3

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Operation

SDC / DHC

The selected operating mode appears in plain text, whereby a

marking at the bottom edge of the display points to the respective

operating mode symbol at the same time. In operating mode 1,

the set value for all heating circuits is the same. In operating

mode 2, the set value applies for the respective heating circuit. To

set the operating mode, see 4.2.3.3 Operating mode, pg. 52.

Setting

►

Press

button.

Select operating mode by turning the input button î. The

marking is located above the corresponding operating mode

symbol.

►

Confirm set operating mode by pressing the

button or the

input button î.

With short-term operating modes (ABSENT, PARTY), set the

desired value by turning the input button îand confirm with

the

button or the input button î.

Alternative: Automatic acceptance of the value after the set

information time (see 4.1.2.7 "System information" button, pg. 26).

Return to the basic

display

Press the

button for approx. 3 s to return to the basic display

from any operating level.

NOTE Holiday mode is set via the "Switching time programs / Holiday

programs" button (see 4.1.2.6 "Switching time programs / Holiday

programs" button, pg. 23).

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4

.1.2.5.1 Absence mode (short-term program)

With the ABSENT operating mode, heating operation is

temporarily deactivated and protected from frost during brief

absences. During the absence, all heating circuits are adjusted to

the specified lowered room temperature. Once the set time

expires, the heating circuits automatically return to the operating

mode that was active before the switch to the absence operation.

Short-term programs such as PARTY or ABSENT are skipped

here.

Setting See 4.1.2.5 "Operating mode" button (basic display) , pg. 16

Application Short absence while heating operation is active.

18

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SDC / DHC

Operation

Cancellation An active absence program can be cancelled in case of early

return.

►

Press

button.

Turn input button îand switch to automatic operation.

The active absence program has been cancelled.

Factory setting P1 as from activation

Setting range P1 (P2, P3) / 0.5 to 24 h to the current time

P1 (P2, P3)

Program-controlled resumption of heating operation. After

activation of the absence program, heating operation is

interrupted until the following switch-on time of the current

automatic program P1 (or P2 or P3, if enabled).

0,5 ... 24 h

The set value is added on to the current time and represents the

return time. When the absence program is called up again, the

last set value is saved and suggested as the initial value.

Display An active absence program appears in the basic display with

information on the return time.

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4.1.2.5.2 Party mode (short-term program)

Party mode causes one-time intermediate heating of all heating

circuits up to a specified point in time and bridges an upcoming or

already active absence cycle totally or partially. Once the set time

expires, the heating circuits automatically return to the operating

mode that was active before the party program. Short-term

programs such as ABSENT or PARTY are skipped here.

Setting See 4.1.2.5 "Operating mode" button (basic display) , pg. 16

Application One-time extension of heating operation or intermediate heating

during lowering operation outside the schedule.

Cancellation An active party program can be cancelled early.

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Operation

SDC / DHC

►

Press

button.

Turn input button îand switch to automatic mode.

The active party program has been cancelled.

Factory setting P1 as from activation

Setting range P1 (P2, P3) / 0.5 to 24 h to the current time P1

P1 (P2, P3)

Program-controlled resumption of heating operation. After

activation of the party program, heating operation is continued

until the following switch-on time of the current automatic program

P1 (or P2 or P3, if enabled)

0,5 ... 24 h

The set value is added on to the current time and represents the

end of the party time. When the party program is called up again,

the last set value is saved and suggested as the initial value.

Display An active party program appears in the basic display with

information on the party end time.

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4.1.2.5.3 Automatic mode

In automatic operation, max. three time programs with different

heating operation times are available. They are called up during

start-up as factory-set and unlosable default programs P1, P2 or

P3 and can, if necessary, be overwritten with their own switching

times in the "Timeprograms" menu (see 4.2.2 "Timeprograms"

menu, pg. 34).

C

NOTE Default programs P2 and P3 cannot be selected until the

PROGRAM = P1 to P3 parameter is enabled in the "System

Parameters" menu. Without enabling, only program P1 is active.

Setting See 4.1.2.5 "Operating mode" button (basic display) , pg. 16

20

EN2H-0220GE51 R0308

SDC / DHC

Operation

Disabling / enabling default program P2 to P3

Disabling

"

System Parameters" menu, program parameter = P1. All heating

circuits and the hot-water circuit solely refer to the default /

individually programmed switching times in the program P1

parameter. Program P1 does not appear in the display in this

operating mode (see 4.2.2 "Timeprograms" menu, pg. 34 and

C

4.2.3.2 Time program, pg. 52).

Enabling

System Parameters" menu, program parameter = P1 to P3 (see

.2.2 "Timeprograms" menu, pg. 34 and 4.2.3.2 Time program,

pg. 52).

"

4

C

Display An active automatic program appears in the basic display with the

current date and time. If default programs P2 and P3 were

enabled, the corresponding symbol, Â,Ãor Ä, is also

displayed depending on the selected program. The symbols are

only displayed with the time program P1 to P3 active.

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4.1.2.5.4 Manual summer operation (excluding heating operation)

With manual summer operation, only the hot-water circuit remains

operation and controls the heat generator temperature based on

C

the specified hot-water temperature and the specified hot-water

switching time program. Heating operation is stopped, and

protection from frost is provided. This feature is only available

when control mode is set to 1.

Setting See 4.1.2.5 "Operating mode" button (basic display) , pg. 16

Disabling / enabling default programs P2 to P3

Disabling

"

System Parameters" menu, program parameter = P1. All heating

circuits and the hot-water circuit solely refer to the default /

individually programmed switching times in the time program = P1

parameter. Program P1 does not appear in the display in this

operating mode (see 4.2.2.1 Selection of the control circuit, pg. 35

and 4.2.3.2 Time program, pg. 52).

C

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Operation

SDC / DHC

Enabling

System Parameters" menu, program parameter = P1 to P3 (see

.2.2.1 Selection of the control circuit, pg. 35 and 4.2.3.2 Time

program, pg. 52).

"

4

C

Display Manual summer operation appears in the basic display with the

information SUMMER. If default programs P2 and P3 were

enabled, the corresponding symbol, Â, Ãor Ä, is also

displayed depending on the selected program. The symbols are

only displayed with the time program P1 to P3 active.

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4.1.2.5.5 Continuous heating operation

The HEATING operating mode ensures continuous heating

operation without time limitations based on the specified daytime

C

room temperature. Hot-water production occurs continuously

based on the specified daytime hot-water temperature.

NOTE The HEATING operating mode remains active until another

operating mode is activated.

Display Activated continuous heating operation appears in the basic

display with the information HEATING.

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4.1.2.5.6 Continuous lowering operation

The RED. HEATING operating mode causes continuously

reduced heating operation based on the specified lowered room

C

temperature. On the heating circuit levels, the reduced operating

mode ECO (frost-protected deactivation mode) or RED (lowering

mode) is set accordingly. The minimum temperature limit of the

respective heating circuit must be taken into account.

See the "Direct Circuit" or "Mixed Heating Circuit 1" / "Mixed

Heating Circuit 2" menu, reduced parameter = reduced operation

and 12 parameter = minimum temperature limit.

Hot-water production occurs continuously based on the specified

hot-water economy temperature (see "DHW" menu, hot water

parameter = hot water at night).

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SDC / DHC

Operation

NOTE The RED. HEATING operating mode remains active until another

operating mode is activated.

Display Activated continuous lowering operation appears in the basic

display with the information RED. HEATING.

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4.1.2.5.7 Standby mode

In standby mode, the entire system is switched off and protected

from frost (all frost-protection functions active).

C

Hot-water production is disabled and protected from frost. At

storage temperatures below 5 °C, a reload to up to 8 °C takes

place.

Application Total deactivation of heating and hot water with full building

protection.

NOTE The heat generator and hot-water production remain in operation

in case of external demand or demand by other heating circuits

on the bus network. The heating circuit pumps are switched on

briefly every day (pump anti-blocking protection).

The standby mode remains active until another operating mode is

activated.

Display Activated continuous standby mode appears in the basic display

with the information STANDBY.

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4.1.2.6 "Switching time programs / Holiday programs" button

Using this button, you can create individualised switching time

programs for heating and hot-water operation and set holiday

mode.

See 4.1.2.6.1 Holiday mode, pg. 24 and 4.2.2 "Timeprograms"

menu, pg. 34.

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Operation

SDC / DHC

4.1.2.6.1 Holiday mode

In holiday mode, the heating circuits can be switched off and

protected from frost or operated based on the settings for the RED.

HEATING operating mode for the duration of the holiday based on

the presetting ("Direct circuit" or "Mixed heating circuit 1" / "Mixed

heating circuit 2" menu, parameter 25 = holiday operating mode).

Setting

►

Press

button.

The menu-selection level Switching time programs / Holiday

programs appears in the display.

►

Turn input button îto the left.

HOLIDAY appears in the display.

Press input button î.

HOLIDAY 01 appears in the display.

Press input button î.

The year flashes in the display.

►

Set year with the input button î.

Press input button î.

The day on which the holiday is to begin flashes in the display.

►

Set the day the holiday will begin with the input button î.

Press input button î.

TIL - - appears in the display.

►

Set the day you will return from holiday with the input

button î.

Press input button î.

The desired holiday timeframe is saved.

You can now enter additional holiday timeframes (up to 15 holiday

blocks).

Application Longer absence while heating operation is active.

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SDC / DHC

Operation

Control during At outside temperatures below the frost-protection limit (see

holidays 4.2.3 "System Parameters" menu, pg. 51) the heating circuits are

controlled as follows:

•

Without wall devices: Based on a lowered room temperature

specification of 3 °C.

With wall devices: Based on the room frost-protection limit of

the respective heating circuit of 10 °C (see "Direct Heating

Circuit" or "Mixed Heating Circuit 1", "Mixed heating circuit 2"

menu, parameter 08 = room frost-protection limit).

Cancellation An active holiday program can be cancelled in case of early

return.

►

Press

button.

Turn input button îand switch to automatic mode.

The active holiday program has been cancelled.

Factory setting Current date

Setting range Current date... (current date + 250 days)

Display An active holiday program appears in the basic display with

information on the return date.

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EN2H-0220GE51 R0308

25

Operation

SDC / DHC

4.1.2.7 "System information" button

Calls up system information, such as temperatures and counter

data.

¤

The information on the outside temperature appears first after the

¤

button is pressed. Turning the input button îcauses the

system temperatures and the counter and consumption states

and operating states of the connected system components to

appear. Pressing the input button îcauses the respective

setpoint values to appear.

Exceptions Collector flow temperature: No setpoint

Solar tank temperature:

Outside temperature:

No setpoint

Averaged value

NOTE The displayed information (see the following example) is

independent of the installed or enabled system components and

control circuits.

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SDC / DHC

Operation

Operating overview

Press

button

Turn input button to the left

Turn input button to the right

Average/current outside

temperature value

Program/operating mode

Outside temperature

direct heating circuit/pump status

min. to max. (0:00 to 24:00 hours)

Program/operating mode

mixed heating circuit 1/pump status

Heat generator temperature

setpoint/actual value

Actuator of

mixed heating circuit 1/status

Hot-water temperature

setpoint/actual value

Program/operating mode

Flow temperature

mixed heating circuit 2/pump status

setpoint/actual value

Actuator of

mixed heating circuit 2/status

Flow temp of mixed heating circuit 1

setpoint/actual value

Program/operating mode

hot-water circuit/pump status

Flow temp of mixed heating circuit 2

setpoint/actual value

Heat generator

status

Variable input 1

setpoint/actual value

Direct heating circuit

pump function/status

Variable input 2

setpoint/actual value

Variable output 1

Variable input 2

function/operating state

setpoint/actual value

Variable output 2

function/operating state

Operating hours

Activations of heat generator

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Operation

SDC / DHC

Setting time for

automatic return

If the ¤button is pressed and held for approx. 3 s, the INFO

TIME parameter appears.

With this parameter, the time it takes for automatic return to the

basic display can be specified.

Setting range OFF

No return. The last selected information display

continuously remains in the basic display until the

next change.

1

... 10 min Automatic return from the information level after the

specified time (in 0.5 minute increments).

Factory setting OFF

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4.1.2.8 "Manual mode" / "Emission measurement" button

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4.1.2.8.1 Manual mode

If this button is pressed and held longer than 5 s in the basic

display, the controller is switched to manual mode. In this

operating mode, the required heat generator temperature is

specified manually with the input button îaccording to the

respective heating need.

A controller set to manual mode has no effect in heat circuit

expansion.

The heat generator setpoint is set between the minimum and

maximum heat generator temperatures and appears flashing at

the bottom left-hand side. The current heat generator temperature

appears statically on the right-hand side in the basic display. The

set switching differential corresponds to the value of automatic

control and is symmetrical to the set value.

C

Application Controller malfunctions (emergency operation), errors

NOTE The maximum heat generator temperature limit is paramount to

the heat generator switching differential and stops the heat

generator in case of exceedance.

With control devices operated purely as a heating circuit

expansion, the setting of the temperature has no effect.

28

EN2H-0220GE51 R0308

SDC / DHC

Operation

The last value to which the control device adjusted the heat

generator temperature appears as a recommendation.

Cancellation

Press

button or

button, to return to the last selected

operating mode.

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4.1.2.8.2 Emission measurement (not with district heating controllers)

ATTENTION

Emission measurements may only be carried out by the

chimney sweep.

Pressing the

button controls the heat generator for a duration

of 20 min based on the set maximum temperature limit. The

remaining time is displayed and counted down.

With two-stage heat generators, both stages are in operation

(measurement at nominal output).

Function The heat generator is adjusted to the maximum heat generator

temperature. All heating circuits and the hot-water production

adjust their setpoint to the respective maximum temperature.

ATTENTION

There is a danger of scalding by hot water, as the hot-water

temperature can exceed the set setpoint temperature.

Application Emission measurement by the chimney sweep.

Cancellation

Emission measurement can be cancelled at any time with the

or button.

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EN2H-0220GE51 R0308

29

Operation

SDC / DHC

4.1.2.9 Heating curve

Determines the heating curve for the heating circuits.

The heating curve describes the relationship of the flow

C

temperature change to the outside temperature change. With a

larger heating surface, such as with floor heaters, the heating

curve has a less extreme slope than with a smaller heating

surface (e.g. radiators).

The set value refers to the lowest outside temperature used for

heat demand calculation.

ATTENTION

This parameter must be set by the technician and should no

longer be changed.

Setting

►

Press and hold input button îfor 3 s.

Turn the input button îto select the desired heating circuit (HC,

MC-1 or MC-2) and confirm it by pressing the input button î.

The design temperature (system) appears at the bottom right-

hand side of the display.

►

Press input button î.

The slope of the heating curve appears at the bottom left-hand

side of the display.

Set the flashing heating curve value by turning the input button

î(design temperature also flashes and is changed

automatically depending on the slope of the heating curve).

►

Confirm by pressing the input button î.

Alternative: Automatic acceptance of the value after the set

information time (see 4.1.2.7 "System information" button, pg. 26).

►

Press

button to return to the basic display.

Setting range 0,2 ... 3,5

30

EN2H-0220GE51 R0308

SDC / DHC

Operation

Factory setting Direct heating circuit (HC) = 1,5

Mixed heating circuit 1

MC-1)

Mixed heating circuit 2

(

=

1

(

MC-2)

x

y

a

x

y

a

Boiler / flow temperature [°C]

Outside temperature [°C]

T

room [°C]

Pos: 26 /156-Honeywell/Bedienung/Menue_Auswahlebene @ 1\m od_1207644710588_6.doc @ 9510

4

.2 Menu-selection level

The control device contains a menu-selection level that is

structured differently, depending on the respective device version.

Access

►

Press and hold input button îfor approx. 3 s.

The menu selection always begins with the TIME – DATE

menu.

►

Turn input button îto select additional menus.

Press input button îto confirm the selected menu.

EN2H-0220GE51 R0308

31

Operation

SDC / DHC

The menu functions are described in the following:

Program-

ming

Configuration Configuration

0

1

2

Time

Year

Language

selection

Nighttime

hot water

Heating

curve

Heating

curve

Heating

curve

Time program Legionella- Reduced Reduced Reduced

protection

day

0

3

4

Day -

Operating

mode

–

Heating

system

Heating

system

Heating

system

Month

Change

Summer /

Heat limit

–

05

06

07

23

–

Parameter

reset

Heating

circuit

name

–

Heating

circuit

name

Heating

circuit

name

Heating

circuit

name

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32

EN2H-0220GE51 R0308

SDC / DHC

Operation

4.2.1 "Time - Date" menu

The following current calendar values can be specified in this

menu:

•

Time

Year

Day - Month

Time change mode (summer / winter time)

NOTE All listed daytime values are set at the factory and generally do

not need to be updated.

An internal, pre-programmed calendar ensures automatic time

change on the annually recurring summer / winter time switchover

dates. If necessary, the automatic time change can be

deactivated. The current weekday, Mo to Su is determined from

the calendar date and does not need to be set.

Application Corrections for rare fault cases

Access See 4.2 Menu-selection level, pg. 31

Setting

►

Turn input button îand select the "Time - Date" menu.

Turn input button îand select the desired calendar value

(

time, year, day - month, change).

►

Press input button îand change the corresponding value by

turning the input button î.

►

Press input button îto confirm the set value.

Turn input button îto select and change additional calendar

values.

Returning

Returning to the basic display takes place by pressing the

button or automatically after the set information time (see

4.1.2.7 "System information" button, pg. 26).

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EN2H-0220GE51 R0308

33

Operation

SDC / DHC

4.2.2 "Timeprograms" menu

Individualised switching time programs for heating and hot-water

operation can be created in this menu. Here, the factory-set

default programs P1 (and, if enabled, P2 and P3 as well) of each

heating circuit and the hot-water circuit are overwritten by

individualised switching times and temperature specifications.

This is especially advantageous if correspondingly adapted

heating programs are to be created in case of periodically

recurring assignments with different assignment times (e.g. shift

work). Max. three heating cycles, each with a switch-on and

switch-off time, are available for each day of the week for

programming switching times. Each heating cycle can also be

combined with a freely-selectable temperature specification.

NOTE The default programs are not lost when overwritten by individually

created programs. Individualised programs, however, are deleted

when default programs are reloaded and must be recreated. For

this reason, individualised switch-on / switch-off times and

temperature specifications should always be entered in the tables

provided for this purpose (see 5 Log, pg. 60).

Access

Press

button.

Returning

Returning to the basic display takes place by pressing the

button or automatically after the set information time (see

4.1.2.7 "System information" button, pg. 26).

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34

EN2H-0220GE51 R0308

SDC / DHC

Operation

4.2.2.1 Selection of the control circuit

After accessing the "Timeprograms" menu, the desired control

circuits can be selected with the input button îin the following

sequence:

•

Direct heating circuit (HC)

Mixed heating circuit 1 (MC-1)

Mixed heating circuit 2 (MC-2)

Hot-water circuit (DHW)

►

Press input button îto access the selected circuit.

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4

.2.2.2 Selection of the program

If the switching time programs P2 and P3 have been enabled (see

"

System Parameter" menu, program parameter = P1 to P3), the

program selection appears.

If switching time programs P2 and P3 are disabled, program

selection is automatically skipped (see "System Parameters"

menu, program parameter = P1).

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4.2.2.3 Selection of day of the week and cycle

Once the program is selected, the first cycle of the first day of the

week (MO 1) and the relevant section in the top time bar flash.

The other cycles are selected by turning the input button îand

confirmed by pressing the input button î.

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EN2H-0220GE51 R0308

35

Operation

SDC / DHC

4.2.2.4 Programming switching times and cycle temperatures

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4.2.2.4.1 Switch-on time

The switch-on time is the start of heating or, with enabled switch-

on optimisation, the start of assignment.

After selecting the day of the week and the corresponding cycle,

the respective switch-on time appears flashing and can be set

with the input button î. The time bar in the top part of the display

provides an overview of all programmed cycles between 0:00 and

24:00 hours on the selected day of the week.

NOTE The switch-on time cannot be set below the switch-off time of a

previous cycle or below 0:00 hours of the selected day of the

week.

If the switch-on time is changed, the corresponding time bar

display is adjusted to the left-hand side.

If the switch-on time is made equal to the switch-off time, the

corresponding cycle is deleted. A subsequent cycle is

automatically shifted to the position of the deleted cycle upon

acceptance.

With subsequent insertion of a cycle that has been bumped up,

the corresponding day of the week must be reprogrammed.

A flashing switch-on time is accepted by pressing the input button î.

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4.2.2.4.2 Switch-off time

The switch-off time is the end of heating or, with enabled switch-

off optimisation, the end of assignment.

Once the switch-on time is accepted, the associated switch-off time

appears flashing and can be changed with the input button î. The

time bar in the top part of the display provides an overview of all

programmed cycles between 0:00 and 24:00 hours on the

selected day of the week.

36

EN2H-0220GE51 R0308

SDC / DHC

Operation

NOTE The switch-off time cannot be set higher than the switch-on time

of a subsequent cycle.

If the switch-on time is changed, the corresponding time bar

display is adjusted to the right-hand side.

If the switch-off time is made equal to the switch-on time, the

corresponding cycle is deleted. A subsequent cycle is

automatically shifted to the position of the deleted cycle upon

acceptance.

With subsequent insertion of a cycle that has been bumped up,

the corresponding day of the week must be reprogrammed.

A flashing switch-off time is accepted by pressing the input button î.

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4

.2.2.4.3 Cycle temperature

Once the switch-off time is accepted, the associated cycle

temperature appears flashing and can be changed immediately

with the input button î. With heating circuits, the displayed cycle

temperature is always based on the desired room temperature;

with the hot-water circuit, it is based on the desired normal hot-

water temperature in the selected cycle.

A flashing cycle temperature is accepted by pressing the input

button î.

At the same time, the last called-up cycle appears flashing so that

it may be monitored; additional cycles can then be selected

directly and edited in the same way in the order: switch-on time,

switch-off time, cycle temperature.

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EN2H-0220GE51 R0308

37

Operation

SDC / DHC

Switching time programming (programs P2 and P3 disabled)

Upon accessing the menu-selection level, the "Timeprograms"

menu always appears first.

Enabling of programs P2 and P3 in the "System Parameters"

menu (see 4.2 Menu-selection level, pg. 31).

Select

heating circuit:

Default

time

Copy

circuit

HC

MC -1

MC -2

DHW

We

Th

Fr

Select day

and cycle:

Mo-

Hcy-1

Mo-

Hcy-2

Mo-

Hcy-3

Tu-

Hcy-1

Su-

Hcy-3

Copy

day

Sa

Change:

Start of

heating

Only appears if there are switching

times in the second heating cycle.

End of

heating

Monitoring

Return:

3

s

Change:

Temperature

Return to the basic display:

HC

Direct heating circuit

MC-1

MC-2

DHW

Hcy

Mixed heating circuit 1

Mixed heating circuit 2

Hot-water heating circuit

Heating cycle

38

EN2H-0220GE51 R0308

SDC / DHC

Operation

Default switching time program (P1) for heating and hot

water

Uniform, continuous heating and hot-water operation on all days

of the week

Default program P1

Heating circuit

Day

Heating operation

from

6:00

to

Heat generator heating

circuit

Mo to Su

22:00

Hot-water circuit

5:00

6:00

22:00

Mixed heating circuit 1 / 2 Mo to Su

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EN2H-0220GE51 R0308

39

Operation

SDC / DHC

Switching time programming (program P2 and P3 enabled)

Upon accessing the menu-selection level, the "Timeprograms"

menu always appears first. Enabling of programs P2 and P3 in

the "System Parameters" menu (see 4.2 Menu-selection level,

pg. 31).

Select

heating circuit:

Default

time

Copy

circuit

HC

P1

MC -1

P2

MC -2

P3

DHW

Select

program:

We

Th

Fr

Select day

and cycle:

Mo-

Hcy-1

Mo-

Hcy-2

Mo-

Hcy-3

Tu-

Hcy-1

Su-

Hcy-3

Copy day

Sa

Change:

Start of

heating

Only appears if there are switching

times in the second heating cycle

End of

heating

Monitoring

Return:

3

s

Change:

Temperature

Return to the basic display:

HC

Direct heating circuit

MC-1

MC-2

DHW

Hcy

Mixed heating circuit 1

Mixed heating circuit 2

Hot-water heating circuit

Heating cycle

40

EN2H-0220GE51 R0308

SDC / DHC

Operation

Default program P1

Heating circuit

Day

Heating operation

from

6:00

to

Heat generator heat- Mo to Su

ing circuit

22:00

Hot-water circuit

Mo to Su

5:00

6:00

22:00

Mixed heating

circuit 1 / 2

Default program P2

Heating circuit

Day

Heating operation

from

6:00

5:00

6:00

7:00

to

from to

Mo to Th

8:00

22:00

8:00

23:00

8:00

23:00

16:00 22:00

13:00 22:00

Boiler heating circuit Fr

Sa to Su

Mo to Th

Fr

15:30 22:00

12:30 22:00

Hot-water circuit

Sa to Su

Mo to Th

Fr

16:00 22:00

13:00 22:00

Mixed heating

circuit 1 / 2

Sa to Su

Default program P3

Heating circuit

Day

Heating operation

from

to

Heat generator heat- Mo to Fr

7:00

18:00

ing circuit

Sa to Su

Reduced

6:00

Hot-water circuit

Mo to Su

Sa to Su

Mo to Su

Sa to Su

18:00

Reduced

7:00

Mixed heating

circuit 1 / 2

Reduced

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EN2H-0220GE51 R0308

41

Operation

SDC / DHC

4

.2.2.4.3.1 Copying switching time programs (days)

Block programming enables the switching times and cycle

temperatures of any day of the week to be copied

1

2

3

4

– To any days within the week (Mo, Tu, We, ..., Su)

– To all weekdays (Mo to Fr)

– To the weekend (Sa to Su)

– To the entire week (Mo to Su)

Calling up the copy function (days)

See flowcharts on pg. 44

Source day

►

Press input button îto confirm the copy function.

Turn input button îto select the source day (MO to SU) to be

copied.

The respective automatic program P1 (P2, P3) of the source

day is copied in the display with the time switch symbol and

the program index.

Target day

►

Press input button îto confirm the source day.

The source day appears flashing.

Turn input button îto select the following setting values and

confirm by pressing the input button î:

•

The following target days (Mo to Su) individually

All days of the week (1 to 7) as a week block

All weekdays (1 to 5) as a weekday block

The weekend days (6 to 7) as a weekend block

Acceptance is confirmed by acknowledging DAY COPY OK.

After acknowledgement, the following target days appear one

after another automatically with each additional press of the input

button îand can be skipped and accepted if necessary.

Pressing the

display.

button causes an immediate return to the basic

NOTE Only complete days with all cycles and temperature specifications

and the respective program can be copied.

42

EN2H-0220GE51 R0308

SDC / DHC

Operation

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4.2.2.4.3.2 Copying switching time programs (heating circuits)

Block programming also enables the copying of all switching

times and temperature specifications of a heating circuit to

another heating circuit.

Calling up the copy function (heating circuits)

See flowcharts on pg. 44

Source circuit

►

Press input button îto confirm the copy function.

Turn input button îto select the source circuit to be copied

(HC, MC-1, MC-2, DHW).

If automatic program P1, P2 or P3 (see "System Parameter"

menu, PROGRAM parameter = P1 to P3) was enabled, the

desired switching time program P1, P2 or P3 of the source

circuit can be selected. If not enabled, program selection is

skipped.

Target circuit

►

Press input button î, to confirm the source circuit.

Based on the same chart, the desired target circuit and, if

enabled, the desired program can be selected and accepted.

Acceptance is confirmed by acknowledging COPY OK. The copy

function is then called up again to copy additional circuits, if

necessary.

NOTE Heating circuits cannot be copied to hot-water circuits or the re-

verse due to the different temperature specifications. If a heating

circuit (HC, MC-1, MC-2) is selected as the source circuit, the hot-

water circuit (DHW) switches off as the target circuit.

A hot-water circuit as the source circuit is also the target circuit. In

this case, only switching time programs P1 to P3 are copied

among one another.

Pressing the

display.

button causes an immediate return to the basic

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EN2H-0220GE51 R0308

43

Operation

SDC / DHC

Block programming

The copy function enables a source day to be copied to any target

days or to all days of the week (week programming). All cycles of

the source day are copied. Individual heating cycles cannot be

copied.

ö

Select

heating circuit:

Default

time

Copy

circuit

HC

MC -1

P2

MC -2

P3

DHW

ö

î

Select program:

1)

P1

ö

î

We

Th

Fr

Select

copy function:

Mo

Hcy-1

Mo

Hcy-2

Mo

Hcy-3

Tu

Hcy-1

Su

Hcy-3

Copy day

Sa

HC

Direct heating circuit

MC-1

MC-2

DHW

Mixed heating circuit 1

Mixed heating circuit 2

Hot-water heating circuit

1)

Program selection for source and target circuits are

skipped if programs P2 and P3 are disabled in the

"

System Parameter" menu.

44

EN2H-0220GE51 R0308

SDC / DHC

Operation

Copy day

Select

source day:

Example: Monday

Copy

from

Mo

Mo ... Su

Source day

Select

first target day:

Example: Tuesday

Copy Mo

to

Tu

1

6

target day or

-7 (Mo ... Su) or

-5 (Mo ... Fr) or

-7 (Sa ... Su)

Copy source day

to first target day:

Acknowledge:

Copy

day

OK

Tuesday as with Monday

Source day

Select

second target day:

Example: Wednesday

Copy Mo

to

We

Second target day

Copy source day

to second target day

Acknowledge:

Copy

day

OK

Wednesday as with Monday

Select and copy other

target days if necessary

Return to the basic display:

EN2H-0220GE51 R0308

45

Operation

SDC / DHC

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Copying heating circuits

NOTE Heating circuits cannot be copied to hot-water circuits since they

have different cycle temperatures: If a heating circuit is selected

as the source circuit, the hot-water circuit can no longer be called

up as the target circuit. The hot-water circuit as the source circuit

is also the target circuit. In this case, only programs of the hot-

water circuit are copied among one another if they were enabled

in the "System Parameter" menu.

Select

copy function:

Default

time

Copy

circuit

HC

MC-1

MC-2

DHW

Select

source circuit:

Source circuit Source circuit Source circuit

HC

MC -1

MC -2

Select

source circuit

program:

Source circuit Source circuit Source circuit

1

P3

)

HC

P1 MC -1

P2 MC -2

Select

target circuit:

Target circuit

HC

Target circuit

MC -1

Target circuit

MC -2

Select

target circuit

program:

Target circuit

Target circuit Target circuit

1)

MC -2

P1 MC -2 P2 MC -2 P3

Copy:

Acknowledge:

Copy

Program P1 (direct heating circuit) =

-

OK- Program P2 (mixed heating circuit 2)

Copy additional heating circuits

if necessary

Exit:

Basic display

46

EN2H-0220GE51 R0308

SDC / DHC

Operation

HC

Direct heating circuit

Mixed heating circuit 1

Mixed heating circuit 2

Hot-water heating circuit

MC-1

MC-2

DHW

1)

Program selection for source and target circuits are

skipped if programs P2 and P3 are disabled in the

"

System Parameter" menu.

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4.2.2.4.4 Reloading default programs

See flowchart on pg. 49

Individually created switching time program P1, P2 or P3 can be

overwritten with the original default switching time program P1, P2

or P3.

For this purpose, select the DEFAULT-TIME function within the

heating circuit selection after accessing the "Timeprograms"

menu.

After confirming by pressing the input button î, the circuit

dedicated to reloading appears flashing (HC, MC-1, MC-2, ALL).

If the automatic programs P1, P2 and P3 (see "System

Parameter" menu, program parameter = P1 to P3) were enabled,

the desired switching time program P1, P2 or P3 of the heating

circuit affected by the reload can be selected. If not enabled,

program selection is skipped.

Resetting Resetting then occurs by pressing and holding the input button

approx. 5 s until acknowledgement appears in the display.

Resetting is confirmed by acknowledging COPY OK.

The DEFAULT-TIME function is then called up again to replace

other circuits with their default programs if necessary.

EN2H-0220GE51 R0308

47

Operation

SDC / DHC

ATTENTION

With the setting value ALL, all heating circuits and the hot-

water circuit are overwritten with their default switching

times with regard to the selected program.

When overwriting occurs, individually created switching time

programs are permanently lost and must be recreated from

scratch.

Pressing the

display.

button causes an immediate return to the basic

48

EN2H-0220GE51 R0308

SDC / DHC

Operation

Reloading default programs

Switching time programs P2 and P3 disabled

HC

Direct heating circuit

MC-1 Mixed heating circuit 1

MC-2 Mixed heating circuit 2

DHW Hot-water heating circuit

EN2H-0220GE51 R0308

49

Operation

SDC / DHC

Reloading default programs

Switching time programs P2 and P3 enabled

DHW

HC

Direct heating circuit

MC-1 Mixed heating circuit 1

MC-2 Mixed heating circuit 2

DHW Hot-water heating circuit

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50

EN2H-0220GE51 R0308

SDC / DHC

Operation

4.2.3 "System Parameters" menu

The system parameters refer to general limiting parameters and

specification values within the heating system.

Access See 4.2 Menu-selection level, pg. 31

Returning

Returning to the basic display takes place by pressing the

button or automatically after the set information time (see

4.1.2.7 "System information" button, pg. 26).

Pos: 44 /156-Honeywell/Bedienung/Sprachwahl @ 1\mod_1207646189369_6.doc @ 9780

4.2.3.1 Language selection

Several languages can be selected for all information that

appears in the display.

After selecting the language and confirming it by pressing the

input button î, additional communication takes place in the

respective language.

Setting values DE

German

English

GB

FR

IT

French

Italian

NL

ES

PT

HU

CZ

PL

RO

RU

TR

S

Dutch

Spanish

Portuguese

Hungarian

Czech

Polish

Romanian

Russian

Turkish

Swedish

Norwegian

N

Factory setting German

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EN2H-0220GE51 R0308

51

Operation

SDC / DHC

4

.2.3.2 Time program

This parameter specifies enabling of the switching time programs

for program selection and for individualised switching time

programming. In the state of delivery, only one switching time

program is enabled. This achieves simplification of operation with

a large portion of applications for which only one switching time

program is used.

Set values P1

Program 1 = enabled, programs 2 and 3 = disabled

All three programs enabled

P1

to P3

Factory setting P1

Effects In contrast to the previous description, the following setting

options are available when programs P1 to P3 are enabled:

•

Operating mode selection: In the AUTOMATIC and SUMMER

operating modes, switching time program P1, P2 or P3 can be

selected.

•

Switching time programming: With switching time pro-

gramming, the three switching time programs, P1 to P3, can

be selected for each heating circuit.

Pos: 46 /156-Honeywell/Bedienung/Bedienmodus @ 1\mod_1207646570291_6.doc @ 9840

4.2.3.3 Operating mode

Two operating modes can be selected. They determine whether

the operating mode, the daytime temperature and the night-time

temperature apply for all heating circuits or can be specified

individually for each heating circuit.

Setting range 1, 2

Set values

1

2

The selected setting applies for all heating circuits together.

Each heating circuit can be assigned an individualised set-

ting.

Factory setting

1

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52

EN2H-0220GE51 R0308

SDC / DHC

Operation

4

.2.3.3.1 Individualised daytime room temperature for each heating

circuit

Setting

►

Press ¥button.

Select desired heating circuit (HC, MC-1 or MC-2) by turning

the input button î.

C

►

Confirm selected circuit by pressing the input button î.

Set flashing room temperature specification to the desired

value by turning the input button î.

►

Confirm set value by pressing the ¥button.

Alternative: Automatic acceptance of the value after the set

information time (see 4.1.2.7 "System information" button, pg. 26).

Setting range 5 ... 30 °C

Factory setting 20 °C

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4.2.3.3.2 Individualised night-time room temperature for each heating

circuit

Setting

►

Press ¦button.

Select desired heating circuit (HC, MC-1 or MC-2) by turning

the input button î.

C

►

Confirm selected circuit by pressing the input button î.

Set flashing room temperature specification to the desired

value by turning the input button î.

►

Confirm set value by pressing the ¦button.

Alternative: Automatic acceptance of the value after the set

information time (see 4.1.2.7 "System information" button, pg. 26).

Setting range 5 ... 30 °C

Factory setting 16 °C

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EN2H-0220GE51 R0308

53

Operation

SDC / DHC

4.2.3.3.3 Individualised operating mode for each heating circuit

Each heating circuit can be assigned an individualised operating

mode.

Setting

►

Press

button.

Select desired heating circuit (HC, MC-1 or MC-2) by turning

the input button î.

C

►

Confirm selected circuit by pressing the input button î.

Select flashing operating mode by turning the input button î.

Confirm set operating mode by pressing the

button or the

input button î.

►

With short-term operating modes (ABSENT, PARTY), set

desired target value by turning the input button îand confirm

set value by pressing the input button î.

Alternative: Automatic acceptance of the value after the set

information time (see 4.1.2.7 "System information" button, pg. 26).

Pos: 50 /156-Honeywell/Bedienung/Sommer_Heizgrenze @ 1\m od_1207647058244_6.doc @ 9900

4.2.3.4 Summer / Heating limit

This parameter specifies the end of heating operation depending

on the outside temperature based on the following criteria:

Quick increase in outside temperature

If the averaged outside temperature is below the set value and

the current outside temperature is 2 K above the set value,

heating operation is interrupted.

Slow increase in outside temperature

Deactivation is also initiated when the averaged and current

outside temperature exceeds the set value.

54

EN2H-0220GE51 R0308

SDC / DHC

Operation

Undoing deactivation

Deactivation is undone when the averaged and current outside

temperature exceeds the set value by 1 K.

The summer deactivation function is undone:

•

In case of an outside sensor defect

In case frost protection is active

NOTE During deactivation phases (standby mode, manual summer

operation, summer deactivation) lasting longer than 24 hours all

pumps are switched on for approx. 20 s and the mixers are

temporarily opened during this time to protect against blocking by

corrosion.

In connection with a second outside sensor, the current averaged

outside temperature is accepted for summer deactivation if the

average value of both sensors is specified during outside sensor

assignment.

Active summer deactivation is represented by a beach umbrella

symbol in the basic display.

Only active in the AUTOMATIC operating mode.

Factory setting 20 °C

Setting range OFF, set value of system frost protection to 40 °C

Pos: 51 /156-Honeywell/Bedienung/Parameter-Reset @ 1\mod_1207647099619_6.doc @ 9915

4

.2.3.5 Parameter reset

With the reset parameter, it is possible to reset any inadvertently

made changes in the parameter menu to the factory setting.

ATTENTION

A reset should only be carried out if all individually entered

values are to be replaced by the values specified at the

factory.

Setting ► When the PARAM. RESET display flashes, press the input

button î.

SET flashes in the display.

►

Press and hold the input button îfor 5 s.

EN2H-0220GE51 R0308

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Operation

SDC / DHC

If a reset is carried out, the RESET OK confirmation appears

briefly. Verification is then started with a call-up of the first

parameter in the respective menu once again.

After the parameter values are reset, a return to the first

parameter in the "System Parameter" menu occurs.

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4.2.4 "DHW" menu

This menu contains all parameters required to program the hot-

water circuit, except the hot-water switching time programs.

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4.2.4.1 Night-time hot-water temperature

This parameter specifies the temperature in the hot-water

generator between the operational-readiness times in automatic

mode.

Factory setting 40 °C

Setting range 5 °C to set normal hot-water temperature value

NOTE If a hot-water thermostat (see parameter 05 = transducer for hot-

water circuit) is used to detect the hot-water temperature, this

parameter is skipped.

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4.2.4.2 Legionella protection day

Factory setting OFF

Setting range OFF, MO to SU, ALL

Set values OFF

MO to SU

The legionella protection function is not active.

Legionella protection is activated on the selected

day of the week at the legionella protection time set

in the following parameter.

ALL

The legionella protection function is activated daily

at the legionella protection time set in the next

parameter.

56

EN2H-0220GE51 R0308

SDC / DHC

Operation

NOTE If a hot-water thermostat (see 05 parameter = transducer for hot-

water circuit) is used to detect the hot-water temperature, these

parameters are skipped.

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4.2.5 "Direct Heating Circuit" / "Mixed Heating Circuit 1" / "Mixed

Heating Circuit 2" menu

These menus contain all parameters required to program the

heating circuit, except the switch time programs. Max. one direct

heating circuit and two mixed heating circuits (mixed heating

circuit 1 and mixed heating circuit 2) are available as heating

circuits.

The following described heating circuit parameters are available

separately for setting for each heating circuit.

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4.2.5.1 Reduced operation

During reduced operation, you can select between two operating

modes.

Factory setting ECO

Setting range ECO, RED

Set values RED (lowering operation)

The heating circuit pump of the direct heating circuit continues

functioning during reduced operation (see 4.2.3.2 Time program,

pg. 52). The flow temperature is determined based on the lowered

room temperature from the associated reduced heating curve.

The set maximum temperature is not undershot.

Application Building with minimal insulation values and high cooling loss.

EN2H-0220GE51 R0308

57

Operation

SDC / DHC

ECO (switch-off operation)

During reduced operation, the direct heating circuit is switched off

completely with outside temperatures above the set frost-

protection limit. The maximum heat generator temperature is not

functional. The heating circuit pump is switched off after a delay to

avoid safety deactivation by reheating the heat generator (pump

follow-up).

If the outside temperature is or becomes lower than the specified

outside temperature frost-protection limit, the controller switches

from deactivated (deactivation mode) to lowered lowering

operation and controls the heating circuit temperature based on

the set lowering curve taking the set minimum heat generator

specification into account.

Application Building with high insulation values (full heating protection).

NOTE The mode set here also applies for the ABSENT and RED.

HEATING operating modes.

Pos: 57 /156-Honeywell/Bedienung/Heizsystem @ 1\mod_1207647329666_6.doc @ 10005

4.2.5.2 Heating system

This parameter refers to the type of the heating system (floor,

radiator or convector heating) and can be matched to the

exponent of the respective heat distributor. Using its progressive

characteristics, the set value determines the curve characteristics

of the heating curve of the direct heating circuit and compensates

for the losses in output in the low-temperature range with it.

The following settings are recommend depending on the type of

heating system:

1

2

,1

Slightly progressive heating curves for floor or other

area heating.

,3

Progressive standard heating curves for all radiator

heating with m-values between 1.25 and 1.35.

Progressive heating curves for convector and

baseboard heating.

>3

Heavily progressive heating curves for general ventilator

applications with high starting temperatures.

58

EN2H-0220GE51 R0308

SDC / DHC

Operation

Factory setting 1,3

,1

(radiator systems)

1

(floor heating) with mixed heating circuits

Setting range 1 ... 10

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4

.3 Error messages

ATTENTION

Inform the heating technician whenever any fault messages

are output.

The control device contains substantial error-notification logic.

The error messages appear in continuous alteration with the basic

display. Multiple errors that occur at the same time appear one

after another in the order in which they occurred. The following

types of error message exist:

Sensor error Sensor measured values that do not lie in the measurement

messages range are evaluated as an interruption or short-circuit. They

appear depending on the type and allocation with fault code 10 to

20 and index 0 for short-circuit or 1 for interruption.

Heat generator error These error messages evaluate the respective switching status.

messages They appear depending on the type and allocation with fault code

30 to 40 and index 0, 1 or 2.

Logical error These error messages evaluate the control result to be expected.

messages They appear depending on the type and allocation with fault code

50 to 60 and index 0, 1 or 2.

Bus error messages These error messages refer to address faults such as double

issuance or non-recognition of address settings on the data bus.

They appear with fault code 70 and index 0 or 1, depending on

the type and assignment.

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EN2H-0220GE51 R0308

59

Log

SDC / DHC

5

Log

Weekly switching program

Set by:

Object:

Mon

1)

On:

Cont. circuit

(

Time

Setpoint

Opt.

Tue

2)

Cont. circuit

Time

(

Setpoint

Opt.

Wed

3)

Cont. circuit

Time

(

Setpoint

Opt.

Thu

4)

Cont. circuit

Time

(

Setpoint

Opt.

Fri (5) Cont. circuit

Time

Setpoint

Opt.

Sat (6) Cont. circuit

Time

Setpoint

Opt.

Sun

7)

Cont. circuit

Time

(

Setpoint

Opt.

=

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EN2H-0220GE51 R0308

SDC / DHC

Log

EN2H-0220GE51 R0308

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Log

SDC / DHC

62

EN2H-0220GE51 R0308

Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies

Sàrl, Ecublens, Route du Bois 37, Switzerland by its Authorized Representative:

Automation and Control Solutions

Honeywell House

Arlington Business Park

Bracknell, Berks, RG12 1EB

Phone(44) 1344 656000

Fax (44) 1344 656644

http://honeywell.com/uk

Printed in Germany

EN2H-0220GE51 R0308

Art. 045 130 5546 – 0812 – 30

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