Checkout
Before beginning checkout of thermostat operation,
set switches on the control panel for the desired system
operation. See instructions provided with the control panel.
To set up the system for thermostat checkout, adjust
each thermostat settings as shown in Table 5.
TABLE 5—SYSTEM SET-UP FOR THERMOSTAT CHECKOUT.
Heating
Cooling
Zones Other
Control
Panel
Zones Other
Than Zone 1
Zone 1
Zone 1
Than Zone 1
Mini-zone
MABS II
MABS II-L
Set thermostat
Move the heating set
point lever 10° F
[6° C] below room
temperature.
Set thermostat
system switch to
COOL; set fan
switch to AUTO.
Move the cooling
set point lever 10° F
[6° C] above room
temperature.
Move the cooling set
point lever 10° F
[6° C] above room
temperature.
system switch to
HEAT; set fan switch
to AUTO. Move the
heating set point
lever 10° F [6° C]
below room
temperature.
MABS XX
On all zone thermostats, set the system
switch to HEAT; set the fan switch to AUTO.
Move the heating set point lever 10° F [6° C]
below room temperature.
On all zone thermostats, set the system
switch to COOL; set the fan switch to AUTO.
Move the cooling set point lever 10° F [6° C]
above room temperature.
NOTE: The control panel provides a three-
minute time delay when 24V is applied to
the control panel and at the end of each
equipment cycle. The high-speed fan runs
during this time delay.
NOTE: The control panel provides a three-
minute time delay when 24V is applied to
the control panel and at the end of each
equipment cycle. The high-speed fan runs
during this time delay.
HEATING
COOLING
NOTE: If a plenum fan control is used in the heating
system, there will be a short delay on a call for heat to
allow the furnace to heat the plenum. The fan starts
immediately in electric heat systems. Allow 30 seconds
for the damper to open or close completely.
CAUTION
!
Do not operate cooling equipment if outdoor
temperature is below 50° F [10° C]. Refer to
manufacturer recommendations.
Make sure all zone thermostats are set as instructed in
the Heating column in Table 5. Check each zone thermo-
stat as follows:
Make sure all zone thermostats are set as instructed in
the Cooling column in Table 5. Check each zone thermo-
stat as follows:
1
. If thermostat has a fan switch, set it to ON. See
1
. Move cooling set point lever on the zone thermostat
0° F [6° C] below room temperature to call for cooling.
. After 30 seconds, place your hand in front of an air
register in that zone to check for cool air at the register.
. Move the cooling set point lever on the zone thermo-
Fig. 13. After 30 seconds, place your hand in front of an
air register in that zone to check for air flow at the register.
1
2
2
. Reset fan switch, if provided, to AUTO. After 30 sec-
onds, make sure air flow at register has stopped.
. Move heating set point lever on zone thermostat
0° F [6° C] above room temperature to call for heat.
. After 30 seconds (longer, if necessary, for time delay
on plenum fan control), check for warm air at the register.
. Move heating set point lever on the zone thermostat
0° F [6° C] below room temperature to end a call for heat.
3
3
stat 10° F [6° C] above room temperature to end the call for
cooling. After 30 seconds (longer, if necessary, for time
delay on control panel), check that air flow at the register
has stopped.
1
4
5
4. Repeat steps 1-3 for each zone thermostat.
1
After 30 seconds (longer, if necessary, for time delay on
plenum fan control or control panel), check that air flow at
the register has stopped.
When system checkout is complete, return all thermo-
stats to the desired settings for normal system operation.
6. Repeat steps 1-5 for each zone thermostat.
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