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Installation Instructions
SINGLE STAGE HEAT/COOL THERMOSTAT
Please read these instructions completely before attempting installation.
WARNING
Before installing thermostat, turn off all power
to unit. There may be more than one power
disconnect. Electrical shock can cause per-
sonal injury or death.
Improper wiring or installation may damage
thermostat. Wiring must conform to local and
national electrical codes.
INSTALLATION CONSIDERATIONS
The thermostat is a wall mounted, low-voltage thermostat,
which maintains room temperature by controlling the opera-
tion of a heating and air conditioning system. Batteries are
not required; temperature and mode settings are preserved
with the power off.
I. THERMOSTAT LOCATION
Thermostat should be mounted:
- Approximately 5 ft. (1.5m) from fl oor.
- Close to or in a frequently used room, preferably on an
inside partitioning wall.
- On a section of wall without pipes or duct work.
Thermostat should NOT be mounted:
- 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,
fi replace, or other temperature-radiating object which
may cause a false reading.
- Close to or in direct airfl ow from supply registers and
return-air grilles.
- In areas with poor air circulation, (behind a door or in
an alcove.)
920-162-01 (5-05)
0.8
Turns Continuous Fan
Selects System Mode:
OFF. HEAT, or COOL
On or OFF
4.55
II. INSTALL THERMOSTAT
1. Turn off all power to unit.
2. If an existing thermostat is being replaced:
A. Remove existing thermostat from wall.
B. Disconnect wires from existing thermostat, one at
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
disposed of properly.
3. Separate the thermostat and back plate.
4. Route thermostat wires through hole in back plate. Level
back plate against wall (for aesthetic value only - thermo-
stat need not be leveled for proper operation) and mark
wall through 2 mounting holes.
Model RT2
Increase
Temperature
3.30
Decrease
Temperature
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Summary of Contents

  • Page 1

    3. Separate the thermostat and back plate. 4. Route thermostat wires through hole in back plate. Level back plate against wall (for aesthetic value only - thermo- stat need not be leveled for proper operation) and mark wall through 2 mounting holes.

  • Page 2

    3 minutes if a change in set point, or a change in mode occurs. Connection to “B” E4 will be displayed if the thermostat has an internal memory failure. terminal required on If E4 appears, replace the thermostat.

  • Page 3

    V. THERMOSTAT CONFIGURATION This thermostat has been carefully confi gured at the factory to provide optimum operation for most installations. The settings programmed into it at the factory should NOT be changed unless determined to be absolutely necessary by a qualifi ed HVAC contractor.

  • Page 4

    FRIEDRICH AIR CONDITIONING CO. INC. Post Offi ce Box 1540 · San Antonio, Texas 78295-1540 4200 N. Pan Am Expressway · San Antonio, Texas 78218-5212 (210) 357-4400 · FAX (210) 357-4480 www.friedrich.com Printed in the U.S.A. 920-162-01 (5-05)

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