Installation and User Guide
4
Pub. No. 18HD54D1-1B-EN
03/2020
Part No.
37-7770002
FIGURE 1. PLACEMENT OF THE 102
Incorrect
Placement
Ceiling Fan
Natural heat
dissipation
from the
Thermostat
Onboard
Thermistor
5 FEET
Optimum
Zone
2 FEET
Correct
Placement
Heat from the screen may be trapped
within the body of the Control by an
external top-down airflow source, such
as a ceiling fan.
The onboard thermistor may be biased
by this heat causing the displayed
indoor temperature to be elevated.
4.2 Mounting / Installation
Follow these steps to mount the
102
Control to the wall.
1.
Turn OFF all power to heating and cooling equipment.
2.
If an existing thermostat is being replaced:
a. Record color and terminal marking of each wire.
b. Disconnect the wires from the existing thermostat
being careful not to allow them to fall back into the wall.
c. Remove the existing thermostat from the wall.
3.
Pull the cover off the thermostat body. Forcing or prying on
the thermostat will cause damage to the unit.
4.
Move thermostat body over hole in wall and mark mounting
hole locations on wall using base as template. (See Fig. 1)
5.
Move base out of the way. Drill mounting holes. If you are
using existing mounting holes pull thermostat wire bundle
through the hole in the thermostat base. Mount sub-base
to wall. Leveling is for appearance only and will not affect
thermostat operation.
6.
Connect wires to terminal block on base using appropriate
wiring diagram.
7.
Push excess wire into wall and plug hole with a fire resistant
material (such as fiberglass insulation) to prevent drafts
from affecting thermostat operation.
8.
Two “AAA” alkaline batteries are included in the thermostat
at the factory with a battery tag to prevent power drainage.
9.
Remove the battery tag to engage the batteries
To replace batteries, set system to
OFF
, remove thermostat cover from wall and install
the batteries in the bottom of the thermostat. For best results, use a premium brand
“AAA” alkaline battery. If the home is going to be unoccupied for an extended period
(over 3 months) and “
” is displayed the batteries should be replaced before
leaving.
IMPORTANT:
•
Do not exceed the specification ratings.
•
All wiring must conform to local and national electrical codes and ordinances.
•
This control is a precision instrument, and should be handled carefully. Rough handling or distorting components could cause the
control to malfunction
4.3 Battery Replacement
Mounting Hole
Mounting Hole
W905 Clip for Hydronic System
W904 Clip for Celcius Display
Battery Location
CAUTION
!
To prevent compressor and/or property damage, if the outdoor temperature is below 55°F,
DO NOT operate the cooling system.
Do not allow the compressor to run unless the compressor oil heaters have been operational
for 6 hours and the system has not been operational for at least 5 minutes.
Electric/Gas Switch
THERMOSTAT
FURNACE/AIR HANDLER
TYPICAL TERMINAL DESIGNATIONS
R
H
R
C
W
G
Y
O
B
R-RH
4-M-R5
R-RC-V
W-H-4
G-F
Y-Y6
O
B
REMOVE JUMPER
FOR 2 TRANSFORMER
RC/RH SYSTEMS
ADD JUMPER
FOR HEAT PUMP
APPLICATIONS
24V POWER (HEATING)
24V POWER (COOLING)
HEATING RELAY
FAN RELAY
REVERSING VALVE
REVERSING VALVE
COOLING RELAY
ONLY REQUIRED FOR HEAT PUMP APPLICAITON
REVERSING VALVE ENERGIZED IN COOL MODE
ONLY REQUIRED FOR HEAT PUMP APPLICAITON
REVERSING VALVE ENERGIZED IN HEAT MODE
CAUTION
!
• Replace batteries when “Change
” is displayed.
• “Change
” indicates batteries have limited
remaining life.
• System will not operate with dead batteries.
NOTICE! FREEZE HAZARD
1
Does not support auxiliary heat
2
Clip jumper W905 to produce a longer
heating cycle which is normally for hot
water or steam (hydronic systems)
1
1
2
