Honeywell MV100 Thermostat User Manual

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MV100 Electric Controllers

T100, T200 Thermostatic Controllers

and V2000 Radiator Valves

PRODUCT DATA

APPLICATION

THERMOSTATIC CONTROLS

The MV100, T100, T200 Controllers, when paired with V2000

Radiator Valves, provide automatic temperature control by

modulating the flow of steam or hot water through free-

standing radiators, convectors, and other heating units. They

provide comfort and energy savings at affordable prices.

T100

T100M

FEATURES

•

Continually monitors and adjusts room temperature

for consistent comfort and relief from underheating

and overheating.

T100C

T100F

•

T100,T200 Controllers include sensor, setpoint dial

and valve actuator; components can be integral or

connected by capillary tubing.

T200

T100B

•

T100,T200 Controllers require no electrical

connections.

T100A,F,M models have range limiting features to limit

adjustment or lock at a fixed setting (can require limit

pin accessory).

MV100

•

EPDM valve seat disk assures tight shutoff on steam

and hot water systems.

VALVE BODIES

•

Nickel-plated bronze cast valve body.

Cartridge containing all working parts inserts into

valve body for ease of service.

•

Cartridges are replaceable while valves remain in

service and under pressurE (WITH accessory service

tool MT100C).

V2043H

•

Valves remain normally open with no control mounted.

Valves can be used with T100, T200 Thermostatic or

MV100 Electric Controllers.

Contents

V2040A

Application ........................................................................

Features ...........................................................................

Specifications ...................................................................

Ordering Information ........................................................

Installation ........................................................................

Wiring (MV100 only) .........................................................

Operation ..........................................................................

Settings and Adjustments .................................................

V2040D

V2040E

V200LD

Single-Pipe Steam Applications ....................................... 10

Troubleshooting ................................................................ 12

Pressurized Valve Cartridge Replacement ....................... 13

2-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

SPECIFICATIONS

Materials:

MV100 Electric Controller

Body: Industrial grade plastic with low thermal conductivity.

Fastening Ring: Plated brass.

Internal Parts: Brass thermostat capsule, other metals.

Dimensions: See Fig. 1.

Thermal Element:

Materials:

T100A,M: Wax.

Body: Industrial grade plastics with low thermal conductivity.

T200,T100B,C,F: Liquid Ethyl Acetate (non-toxic,

Fastening Ring: Plated brass.

flammable).

Internal Parts: Brass thermostat capsule, other metals.

Thermal element: Wax-filled brass capsule.

Temperature Ratings:

Range: 43°F to 79°F (6°C to 26°C).

Maximum: 125¼F (52¼C).

Electrical Ratings:

Control Type: Spst switch.

Controller:

Voltage: 24 Vac, 60 Hz, or 24 Vdc.

Power Consumption: 0.125A, 3W.

V2000 Valves

End Switch: Low-voltage (24 Vac, 5A), two-position, spst,

normally open switch (closes when controller powered).

Models: See Table 2.

Dimensions: See Fig. 2 and 3.

Configuration (with Controller Mounted):

Normally closed (valve remains closed without power).

Materials:

Body: Bronze.

V2040A (1/2 in.): Brass.

Union: Brass.

Stem Seal: Double EPDM seal.

Cartridge: Brass and stainless steel with EPDM seat disk.

NOTE: Normally open model available in Canada.

Opening Time (at 78°F): Maximum: 5 minutes from cold to

fully open.

Ambient Temperature Rating: Maximum: 122°F (50°C).

NOTE: Apply 25 ft.-lb. (30 N•m) torque when installing the

valve cartridge.

T100,T200 Thermostatic Controllers

Maximum Temperature Rating: 266°F (130°C).

Models: See Table 1.

Maximum Pressure Ratings:

System:

Dimensions: See Fig. 1.

Water: 145 psi (10 bar).

Steam: 15 psi (103 kPa).

Differential:

Power: Self-powered, no electrical connections.

Components: Sensor, setpoint dial and valve actuator.

With MV100 Controller: 36 psi (248 kPa).

With T100 or T200 Controller: 14.5 psi (1 bar).

For Low Noise: 2.9 psi (20 kPa).

Sizes:

V2024H: 1/8 in.

V200LD: 1/2 in., 3/4 in.

V2040D,E,A: 1/2 in., 3/4 in., and 1 in.

ORDERING INFORMATION

When purchasing replacement and modernization products from your TRADELINE® wholesaler or distributor, refer to the

TRADELINE® Catalog or price sheets for complete ordering number.

If you have additional questions, need further information, or would like to comment on our products or services, please write or

phone:

Your local Honeywell Automation and Control Products Sales Office (check white pages of your phone directory).

Honeywell Customer Care

885 Douglas Drive North

Minneapolis, Minnesota 55422-4386

In Canada—Honeywell Limited/Honeywell Limitée, 35 Dynamic Drive, Scarborough, Ontario M1V 4Z9.

International Sales and Service Offices in all principal cities of the world. Manufacturing in Australia, Canada, Finland, France,

Germany, Japan, Mexico, Netherlands, Spain, Taiwan, United Kingdom, U.S.A.

2-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

T100A

TOP

T100M

TOP

(

50)

(

50)

T100C

(25)

-1/8 (54)

CAPILLARY TUBE LENGTH

-1/2 FT (1.4 m)

-1/8 (54)

-13/16

(46)

-5/32

55)

(

77)

-5/16

84)

MAX.

(

2-31/32 (75)

CAPILLARY TUBE

LENGTH 4-1/2 FT (1.4 m)

M12927

M12929

M12925A

T100B

T100F

2-1/8 (54)

2 (50)

CAPILLARY TUBE LENGTH

-1/2 FT (2m) OR 16 FT. (5m)

-1/8 (54)

CAPILLARY TUBE

LENGTH 6-1/2 FT (2 m)

-13/16

(46)

-5/16

84)

MAX.

-5/32

55)

(

-31/32 (75)

M12928

M12926

T200A

TOP

MV100

(51)

-9/16

40)

(

-7/8

3/16 (20)

(74)

M3187A

76)

(

MAX

M12945

Fig. 1. MV100, T100 and T200 dimensions in in. (mm).

62-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

Table 1. T100,T200 Models.

Model

T100A

Control Range

Mounting

Capillary

None

Description

Components are in one unit.

43°F to 79°F

_D_i_r_e_c_ta

(

6°C to 26°C)

48°F to 79°F

9°C to 26°C)

T100B

T100C

T100F

Remote

One 6-1/2 ft (2 m) Sensor and setpoint dial combined and remote from valve

or 16 ft (5 m) actuator.

Two 4-1/2 ft

(

Components mount remotely from each other.

(1.4 m)

43°F to 79°F

6°C to 26°C)

Direct with

remote

One 6-1/2 ft (2 m) Sensor is remote from combination setpoint dial and valve

actuator.

(

sensor.

T100M

T200A

_D_i_r_e_c_ta

None

Components are in one tamper-resistant unit.

White body with chrome-plated end.

Mount the unit horizontally on the valve body for accurate temperature regulation.

Table 2. V2000 Models.

Connection

Model

V2040D

V2040E

V2040A

V200LD

Body Pattern

Straight

Inlet

Outlet

Application

NPT

Union Nut with Use where manual valves were not originally installed.

NPT Threaded

or Sweat

Threaded

Sweat

Angle

Typically used with remote temperature sensing controllers.

Horizontal Angle

Straight

Typically used with direct-mount controllers (T100A,M; T200A)

Sweat

Use with copper tubing installations.

V2042H/

V2043H

One-Pipe

18 in. NPT 1/8 in NPT for Use in single-pipe steam applications.

SA123A Vent

V2040D (Straight Body)

V2040E (Angle Body)

B MAX.

M12930B

V2040A (Horizontal Angle Body)

M12931B

V200LD (Straight Body)

B MAX.

M12932B

M12933B

Fig. 2. V2000 dimensions.

NOTE: Refer to Table 3 for detailed valve dimensions for each valve size.

2-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

Table 3. Valve Dimensions.

Sizein

in.

B Max^a

in in. (mm) in in. (mm) in in. (mm)

Valve

V2040D 1/2

3-3/4 (95) 4-1/16 (104) —

4-3/16 (106) 4-1/16 (104) —

4-1/2 (114) 4-1/2 (114)

2-5/16 (58) 3-3/16 (98) 1 (26)

2-5/8 (66) 3-13/16 (98) 1-1/8 (29)

2-15/16 (74) 4-5/16 (110) 1-5/16 (34)

3/4

—

V2040E 1/2

3/4

B MAX.

V2040A 1/2

2-1/8 (54)

2-1/2 (64)

4-1/2 (115) 1-1/8 (28)

5-3/16 (132) 1-3/16 (31)

3/4

2-15/16 (74) 5-3/16 (132) 1-7/16 (37)

2-5/8 (66) 4-1/16 (104) —

V200LD 1/2

V2042H 3/8

M17016

2-15/16 (74) 4-1/16 (104) —

Fig. 3. V2042H (Body)/V2043H (Body with Airstream Vent)

Dimensions.

1-11/16 (43) 3-13/16 (98) 1-3/16 (31)

^aB Max dimension is with T100A control installed, except for

the V2042H, for which it is without the steam/air vent

installed.

NOTE: Refer to Table 3 for detailed valve dimensions for

each valve size.

Connections:

Inlets Available:

INSTALLATION

Internally threaded.

Sweat (1/2 in. and 3/4 in. only).

Outlets Available:

When Installing this Product...

Union nut with threaded tailpiece.

Sweat (1/2 in. and 3/4 in. only).

Union nut with sweat tailpiece (1/2 in. and 3/4 in. only).

1. Read these instructions carefully. Failure to follow them

could damage the product or cause a hazardous

condition.

Check the ratings given in the instructions and on the

product to make sure the product is suitable for your

application.

Capacity:

Cv (gpm at 1 psi drop across fully-open valve):

/2 in.: 2.0.

/4 in.: 2.2.

in.: 2.3.

3. Installer must be a trained, experienced service

technician.

4. After installation is complete, check out product

Btuh (Btu/hr at 7 psi drop across fully-open valve):

operation as provided in these instructions.

/2 in.: 59,100.

/4 in.: 63,800.

in.: 70,500.

CAUTION

Excessive force can distort and damage valve.

Do not overtighten the union nut.

Equipment Damage Hazard.

Accessories:

03225 Replacement Bulb Guard for T100F.

72844 Locking Cap and Limit Pins for T100M.

72873 MT100C Cartridge Tool Driver Upgrade Kit.

A104F Limit Pins for T100A,F.

VS1200SL01 Replacement Valve Cartridge.

G111B Bulb Guard to protect T100C sensor when

wall-mounted.

VA8200A001 Valve Cartridge Replacement Tool for system

under pressure (V2000).

Q110D Inlet Strainer Inserts for NPT V100 (models available

for 1/2 in. and 3/4 in. valves).

CAUTION

Equipment Damage Hazard.

Driving an unmounted MV100 can damage the

actuator beyond repair.

Mount the MV100 before applying power to the

actuator.

SA123A Steam/Air Vent for V2042HSL10 One-pipe Steam

Valve.

CAUTION

Sweat Valve Damage Hazard.

Soldering the valve with the cartridge or controller

attached can damage the device.

Prior to attaching valve to piping, remove controller and

cartridge from potential exposure to heat.

IMPORTANT

When installing the valve body, ensure that the arrow

(cast into the body) points in the direction of the flow.

62-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

One complete revolution of the black pre-setting ring equals a

pre-setting of 10 (Fig. 7).

Pre-setting and Balancing Flow Through

Valve Body.

Close valve with straight blade screwdriver by turning black

pre-setting ring clockwise.

M22690

Fig. 7. One complete revolution equals a pre-setting of 10.

Table 4. CV Values.

Pre-

setting

M22687

Open

Fig. 4. Closing valve.

3/8 in.

0.29 0.58 0.87

1.16 1.45 1.68 1.80 2.00

/2 in.

2.15

2.26

When closed, the position of the screwdriver slot equals pre-

setting zero. Mark the position of the slot with a felt tip pen.

/4 in.,

in.

NOTE: Pressure drop (psi) = (flow[gpm]/cv)².

Product Selection

Select the installation diagram (from Fig. 4 through 16)

that most accurately represents your equipment and pip-

ing configuration.

Use Table 4 to select the combination of controller and

valve that is most suitable based on:

M22688

a. Equipment and pipe configuration, see Tables 1 and

b. Flow capacity requirement, see Specifications

Fig. 5. Mark zero position of screwdriver slot.

section.

Take required value from Table 4. Turn presetting ring

counterclockwise with a straight blade screwdriver to this

position.

IMPORTANT

The T100 and T200 are modulating, not manual shut-

down, valve actuators. Do not use them for hand

shutoff valves.

Chose value has to be congruent with marking.

M22689

Fig. 6. Set pre-setting ring to correct value.

2-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

Typical Applications

Table 5. Figure References to Typical Applications.

Application

Figure No.

Controller

Valve

T100A, T100M, T200, MV100 V2040D

T100A, T100M, T200, MV100 V2040A

T100A, T100M, T200, MV100 V2040E

T100A, T100M, T200, MV100 V2042H

M12934

T100M, MV100

T100F, MV100

T100B, MV100

T100C, MV100

V2040A

V2040E

V200LD

V2040D

V2042H

V2040D

V2040E

V2040D

V200LD

Fig. 10.

M3236

Fig. 11. One-pipe steam system.

M4631

Fig. 8.

M12935

Fig. 12.

M4632

Fig. 9.

M4635

Fig. 13.

62-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

M4640

M3190

Fig. 14.

Fig. 18.

Fig. 19.

Fig. 20.

M4638

M12936A

Fig. 15.

SA123A

V2042H

T100A

M12939

M11752A

Location and Mounting

Fig. 16.

Because these controls are thermostats that have sensors that

measure air temperature in the immediate vicinity, it is critical

to select an appropriate installation location.

These devices are adversely affected by radiant heat, solar

heat or airflow obstructions such as curtains or enclosures.

Two essential considerations for choosing the correct

controller/valve body combination for a particular installation

are:

—

Adequate dimensional clearances.

Proper sensor positioning.

M12937

IMPORTANT

Install built-in sensor type controllers in a horizontal

Fig. 17.

position to prevent air warmed by the hot valve body

from influencing the sensor.

NOTE: The most common misapplication of these valves and

controllers is the use of a horizontal-body valve

(

V2040E) with a direct-mount controller (T100A,M or

T200A). See Fig. 17.

2-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

MV100

END

SWITCH

RED

TO CIRCULATOR

PUMP MULTIZONE

RED

PANEL OR BURNER

RELAY

PTC

RESISTANCE

HEATER

YELLOW

(HOT)

T810/T822

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD

PROTECTION AS REQUIRED.

CORRECT

M16272A

NORMALLY OPEN END SWITCH CLOSES WHEN MV100 IS POWERED.

INCORRECT

SUGGESTED HEAT ANTICIPATOR SETTING IS 0.35A.

M12947A

Fig. 21. Horizontal-body V2000 application.

Fig. 22. MV100 internal schematic and wiring connections.

Install controllers with external sensors in any position. The

sensor can easily be mounted in a position to measure and

control the room air temperature.

OPERATION

NOTE: When temperature of medium exceeds 190°F (88°C),

mount the MV100 horizontally.

The T100 and MV100 Controllers contain temperature-

sensitive capsules that expand or contract in reaction to

temperature changes.

WIRING (MV100 ONLY)

—

When the capsule expands, pressure from the expand-

ing material closes the valve, preventing flow through

the radiation unit.

When the capsule contracts, the valve opens and flow

resumes through the radiation unit.

Wire the MV100 according to Fig. 18.

—

CAUTION

Can short equipment circuitry.

Disconnect all power supplies before installation.

T100

Equipment Damage Hazard.

The T100 temperature-sensitive capsule expands when the

temperature rises above the setpoint.

MV100

CAUTION

Connecting improper voltage can damage the

device beyond repair.

When signalled by the thermostat, an electric element in the

MV100 heats the capsule causing it to expand.

Equipment Damage Hazard.

NOTE: For normally open MV100 models, the capsule cools

when signalled by the thermostat.

Connect only 24 Vac or 24 Vdc to the MV100.

SETTINGS AND ADJUSTMENTS

When installation is complete, rotate the setpoint dial to the

desired setting.

NOTE: The setpoint varies with the location of the sensor. A

floor level sensor controls at a setpoint different from

the wall level sensor.

Normally, correction of an overheating or underheating

condition requires only small changes. See Table 5 for dial

markings and corresponding temperature settings. After

changing the setting, allow the valve at least 30 minutes to

stabilize.

62-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

Table 6. T100 and T200 Settings and Corresponding Temperatures in °F (°C).

54 (12)

64 (18)

61 (16)

68 (20)

72 (22)

73 (23)

75 (24)

T100A,F

T100B,C

32 (0)

—

43 (6)

46 (8)

79 (26)

55 (13)

43 (6)

61 (16)

52 (11)

₉₍₂₆₎a

T100M

T200

—

64 (18)

57 (14)

68 (20)

63 (17)

72 (22)

68 (20)

₅₍₂₄₎a

₇₉₍₂₆₎a

73 (23)

79 (26)

Setting not marked on dial.

NOTE: Torque cartridge to 25 ft-lb.

Setpoint Locking or Limiting

SINGLE-PIPE STEAM APPLICATIONS

(T100A,F,M only)

A single temperature or range-limiting lock is available for the

T100A,F,M. See Accessories in the Specifications section.

Refer to the T100A,F,M Installation Instructions for procedural

details.

Many older buildings original heating systems were

single-pipe steam. The advantage of single-pipe steam

systems is lower initial cost, resulting from the use of less

piping and elimination of radiator steam traps.

Cartridge Replacement

CAUTION

Loss of system control and boiler damage can

With the appropriate tools, the V2000 cartridge can be

replaced while under pressure.

Boiler Flooding Hazard.

result.

For a one-pipe steam system radiator, install valve only

at the vent location.

WARNING

Severe Scalding Hazard.

Contact with hot liquid can lead to severe injury

or cause death.

For a pressurized valve, only open with Valve Cartridge

Replacement Tool.

IMPORTANT

Ensure vacuum breakers are installed on the steam

system risers. If vacuum breakers (that open to the

atmosphere at zero psig) are not installed, the system

can develop a negative pressure and pull steam back

into the radiators on resumption of steam.

CAUTION

Contact with hot valve body can cause

Refer to Fig. 12 for installing the one-pipe steam radiator

adapter assembly.

Hot Surface Hazard.

severe burning.

Service cartridge only when valve body is cool.

Single-Pipe Steam Systems

T100/V2043H (with vent) operation to provide temperature

control for a formerly uncontrolled single-pipe steam system

follows:

CAUTION

Hazardous Splashing Fluids.

Can injure, burn, or blind.

Wear safety glasses or goggles.

The boiler is off (zero steam pressure); radiators are

filled with air; the vent is open.

The T100 calls for heat, opening the valve.

At the command of an external controller (such as a

representative zone thermostat, or a timer controlled by

outside temperature) the boiler cycles on and begins

delivering steam to the system.

Under Pressure

Replacing the V100 Cartridge with the system under pressure

requires the Valve Cartridge Replacement Tool (see

Accessories in the Specifications section). See Pressurized

Valve Cartridge Replacement section for details.

4. Steam enters the radiator, forcing air through the open

V2042H and out through the vent.

Once the air is exhausted, the steam heats the

thermostatic element of the vent, causing it to close.

The steam cools forming condensation. Condensation

flows out of the radiator making room for more steam to

enter.

Not Under Pressure

Replacing the cartridge without the Valve Cartridge

Replacement Tool requires one of the following:

The T100 is eventually satisfied (temperature equals the

setpoint) and it closes the V2042H.

•

Isolation of valve from system pressure.

System shutdown and drain to valve level.

The air in the system (introduced by the vacuum

breakers) begins to fill the radiator. The air in the radiator

prevents steam from coming in and the radiator cools.

The boiler cycles off by command of components

external to the T100/V2042H and the steam pressure

returns to zero.

Once the valve is not pressurized:

Using a 3/4 in. (19 mm) hex (6- or 12-point) socket

wrench, remove and discard the cartridge.

Clean the inside of valve and cartridge sealing surfaces.

Install a new cartridge.

2-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

NOTE:

NOTE: Install the valve on the boiler side of the condensation

takeoff to ensure that the condensation can return to

—

While the T100 is satisfied, the V2042H is closed

and the radiator remains airlocked. Thus, no

steam can enter the radiator. The airlocked

condition remains until the T100 calls for heat, at

which point the system operates as described in

steps 1 through 6.

An improperly cycled boiler causes either

excessive heating or lack of heat, depending on

the system time constant.

the boiler.

3. Verify that the steam pressure has returned to zero.

Verification

Verification is necessary to prove that the pressure has

returned to zero. Simply turning off the boiler or shutting off the

steam supply does not ensure zero steam pressure. The

simplest way to check for zero pressure follows:

—

Bringing the Steam Pressure to Zero psig

Install a strap-on Aquastat® Controller, such as the

Honeywell L6006C Aquastat® Controller, on the

condensation return line (see Fig. 19).

To assure the proper operation of any single-pipe steam

system, ensure that the steam pressure is brought to zero at

some time during the off-cycle. One suggested procedure

follows:

2. Set the Aquastat® Controller at about 150°F (66°C).

With the return line at or below this temperature, the

water is all condensation, and the pressure is

functionally zero.

3. Wire the Aquastat Controller into the interrupting circuit

to ensure that steam flow cannot resume until the

condensation line is below the setpoint. The 150°F

(66¡C) setpoint serves as a nominal starting point and

can require adjustment for individual steam systems.

Determine if steam is required using one of two

methods:

a. A thermostat in a representative zone controls the

valve or cycles the boiler.

b. A timing device cycles the boiler for varying lengths

of time in response to outdoor temperature.

IMPORTANT

When cycling the boiler from a space thermostat in a

MASTER ZONE

THERMOSTAT

L6006C

zone, do not apply a radiator valve to that radiator.

HOT)

(

Vac

Turn off the steam and allow system pressure to drop to

zero. Do this using one of two methods:

LOW

VOLTAGE

RELAY

a. Turn the boiler off and allow the total steam pressure

in the system to drop to zero.

PRIMARY

CONTROL

IMPORTANT

Before applying controls to turn a boiler on and off,

POWER SUPPLY. PROVIDE DISCONNECT MEANS AND

OVERLOAD PROTECTION AS REQUIRED.

check the manufacturer recommendations.

M7536A

b. In installations where turning the boiler off at the end

of each cycle is undesirable, install a control valve

Fig. 23. Holding circuit for use with L6006 when

verifying zero psig steam pressure.

(such as a Honeywell V5011 Valve) on the boiler dis-

charge line.

62-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

TROUBLESHOOTING

Refer to Table 6 for troubleshooting details.

Table 7. T100/V2000 Troubleshooting.

Symptom

Possible Cause

Solution

Not all sections of the Many radiators are oversized and System is operating properly.

radiator are heating.

Underheating

not all sections heat to maintain

the desired temperature.

Sensor in the wrong location.

Change the sensor location or change the control type. See

Installation Instructions.

T100A,M Controller mounted in a Mount the T100A,M horizontally, or switch controller to a T100F.

vertical position above the hot

pipe.

Excess capillary tubing coiled

above or too close to the heat

source.

Coil excess capillary tubing below or away from the heat source.

Flow through the valve is in the

wrong direction.

Check the arrow on the valve body. It should be in the direction of

the flow. Change the valve direction or flow direction.

Inadequate system temperature or Check boiler operating and limiting controls, circulating pump, and

pressure.

isolating valves.

Defective steam traps.

Airlock in the hot water system.

Scale or debris blocks flow.

Repair or replace the traps.

Fully open the valve to allow air to pass. Install vents.

Flush the system. Do not use oil-based additives. Clean strainer

insert in steam applications.

Heating cabinet dampers are

closed.

Open or remove the dampers.

Single-pipe: Blocked vent.

Sensor in the wrong location.

Control not properly installed.

Remove and inspect vent. Replace if necessary.

Change sensor location or change control type.

Overheating

Check for bosses and grooves, reset actuator on valve and tighten

knurled ring to valve body.

Capillary tube broken, kinked or

bent sharply.

Replace control.

Dirt or scale under the seat

prevents tight shutoff.

Remove the control from the valve body, allowing valve to open

fully and flush away scale and debris. Reinstall control. Turn fully

clockwise. If the valve does not close fully, remove the control and

cartridge (see Cartridge Replacement section). Always use a

strainer insert in steam applications.

Flow through the valve is in the

wrong direction, damaging the

valve seat.

Check the arrow on the valve body. It should correspond to the flow

direction. Change the valve direction or flow direction. Remove

valve cartridge and inspect seat disk for damage.

Defective steam traps.

Repair or replace traps.

Excessive differential pressure

Install differential pressure regulator (D146A) to maintain less than

forces the valve open (hot water 15 psi (103 kPa) differential between the supply and return pipes.

systems).

Single-pipe: Insufficient air in

system.

Check boiler cycling and system vacuum breakers. Repair or

replace breakers as necessary.

Chattering or knocking. Flow through the valve in the

wrong direction.

Check the arrow on the valve body. It should correspond to the flow

direction. Change the valve direction or flow direction.

Vacuum in the system.

Excessive differential pressure.

Bent piping.

Steam—check traps and vents.

Hot water—check expansion tank operation and location.

Install differential pressure regulator (D146A) to maintain less than

5 psi (103 kPa) differential between the supply and return pipes.

Ensure adequate space for piping.

2-3048—2

MV100 ELECTRIC CONTROLLERS T100, T200 THERMOSTATIC CONTROLLERS AND V2000 RADIATOR VALVES

PRESSURIZED VALVE CARTRIDGE

REPLACEMENT

The VA8200A001 Valve Cartridge Changing Tool enables the

user to remove, and clean or replace the valve cartridge while

the valve remains pressurized. Boiler shutdown is not required.

WARNING

Severe Scalding Hazard.

Contact with hot liquid can lead to severe injury or

cause death.

Exercise extreme caution when working with hot liquid.

M16273

Fig. 25. Attaching VA8200A001 to valve.

CAUTION

Hazardous Splashing Fluids.

Can injure, burn, or blind.

Wear eye protection to prevent injury.

To remove the cartridge, perform the following:

Remove controller and loosen valve cartridge slightly

using a 19mm socket wrench (A,B). See Fig. 20.

Tighten VA8200A Cartridge Changer to valve body

(

A,B), close drain cock (C), and turn tool handle ccw to

unscrew cartridge (D). See Fig. 21.

Pull handle out to clear VA8200A ball valve (A), close

ball valve (B), and open drain cock to remove excess

water and steam from chamber (C). See Fig. 22.

Unscrew end cap (A) and remove cartridge from

chamber (B). See Fig. 23.

M16275

Clean or replace cartridge.

Fig. 26. Disconnecting valve cartridge

and draining chamber.

M16274

M16276

Fig. 24. Loosening valve cartridge.

Fig. 27. Removing valve cartridge.

To reinstall cartridge into the valve, use the same process and

figures. Perform steps in reverse order. All figure arrows are

backwards (except Fig. 20, arrow A). Proceed as follows:

Replace cartridge into chamber (B) and screw end cap

onto VA8200A (A). See Fig. 23.

Close drain cock (C), open ball valve (B), and push

handle in (A). See Fig. 22.

Turn tool handle cw to screw in cartridge (D), open drain

cock to drain chamber of remaining water and steam (C),

and loosen VA8200A Cartridge Changer from valve body

(

B,A). See Fig. 21.

Tighten valve cartridge using a 19mm socket wrench

A,B) and replace controller. See Fig. 20.

(

62-3048—2

2-3048—2

62-3048—2

Automation and Control Solutions

Honeywell International Inc.

Honeywell Limited-Honeywell Limitée

35 Dynamic Drive

985 Douglas Drive North

Golden Valley, MN 55422

customer.honeywell.com

Scarborough, Ontario M1V 4Z9

U.S. Registered Trademark

2006 Honeywell International Inc.

2-3048—2 G.R. Rev. 02-06

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