mars 7602-457 Communicating Programmable Thermostat Instruction Manual
Installation Manual - 7602-457 Communicating, Programmable Thermostat
Comfort-Aire and Century's 7602-457 Communicating,
Programmable Thermostat is the perfect compliment to a
Comfort-Aire and Century's Geothermal Heat Pump System
and represents a significant advancement in thermostat
communicating technology. For homeowners, the 7602-457
provides highly customizable climate control features
designed to maximize comfort and reduce the amount of
energy consumed by the Comfort-Aire or Century
a time. Be careful not to allow wires to fall back
into the wall.
C. As each wire is disconnected, record wire color
and terminal marking.
D. Discard or recycle old thermostat.
NOTE: Mercury is a hazardous waste and MUST be dis-
posed of properly.
Geothermal Heat Pump System. For dealers, it represents
a significant, industry leading advancement in configuration,
monitoring and diagnostics from the thermostat. Please read
the following instructions carefully to maximize the comfort
and cost-saving potential of your Comfort-Aire or Century
Geothermal Heat Pump System.
3. Separate the thermostat from base.
4. Route thermostat wires through hole in base. Level
base against wall (for aesthetic value only - thermo-
stat need not be leveled for proper operation) and
mark wall through 2 mounting holes.
5. Drill two 3/16-in. mounting holes in wall where
marked. (Note: Mounting holes on thermostat are
designed to fit on a horizontal J-box).
6. Secure base to wall with 2 anchors and screws
provided making sure all wires extend through hole in
base.
SAFETY CONSIDERATIONS
7. Connect wires to proper terminal of the connector
block in the thermostat.
Improper wiring or installation may damage thermostat. Wir-
ing must conform to local and national electrical codes
8. Push any excess wire back into wall. Excess wire
inside the thermostat case can interfere with proper
air flow across the temperature sensor. Seal hole in
wall to prevent air leaks. Leaks can affect operation.
9. Install thermostat on base.
ѥꢀWARNING! ѥ
WARNING! Before installing thermostat, turn off all
power to unit. There may be more than one power
disconnect. Electrical shock can cause personal
injury or death.
10. Turn on power to the unit.
III. WIRING DIAGRAMS
All excess wire should be pushed back into the wall as far as
possible. Excess wire inside the thermostat plastic case may
interfere with the air flow across the temperature sensor.
INSTALLATION CONSIDERATIONS
The thermostat requires no batteries. The thermostat is not
a power stealing device and MUST have both R and C termi-
nals connected. See Diagram 1.
Diagram 1: Thermostat Connections
DXM2
Control
INSTALLATION
I. THERMOSTAT LOCATION
Thermostat should be mounted:
7602-457 Thermostat
Gnd
C
R
•
•
Approximately 5 ft. (1.5m) above floor.
Close to or in a frequently used room, preferably on an
inside partitioning wall.
B-
A+
A+
B-
24V
•
On a section of wall without pipes or duct work.
Thermostat should NOT be mounted:
Outdoor
Sensor
(Optional)
OD
•
•
Close to a window, on an outside wall, or next to a
door leading to the outside.
Exposed to direct light and heat from a lamp, sun,
fireplace, or other temperature-radiating object which
may cause a false reading.
GND
Remote Indoor
Sensor
(Optional)
ID
Thermostat Connections
C
R
A+
B –
GND Ground
OD
ID
•
•
Close to or in direct airflow from supply registers.
In areas with poor air circulation, such as behind a
door or in an alcove.
24V Common for Control Circuit
24V Supply for Control Circuit
Communications (Positive)
Communications (Negative)
II. THERMOSTAT INSTALLATION
1. Turn off all power to unit.
Outdoor Temperature Sensor
Indoor Temperature Sensor
2. If an existing thermostat is being replaced:
A. Remove existing thermostat from wall.
B. Disconnect wires from existing thermostat, one at
3
| General | Details |
|---|---|
| Name | mars 7602-457 Communicating Programmable Thermostat Instruction Manual |
| Make | MARS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.49 MB |
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