C L I M AT E M A S T E R W AT E R - S O U R C E H E AT P U M P S
C o n s o l e s
R e v. : 3 0 J u n e , 2 0 0 8 B
22
C l i m a t e M a s t e r Wa t e r- S o u r c e H e a t i n g a n d C o o l i n g S y s t e m s
Optional Wall-Mounted Thermostat
CCE & TRC WSHP units are built with standard internal
thermostats in either manual changeover (MCO) or
automatic changeover (ACO) configuration. No external,
field-installed low-voltage wiring is required.
When desired, the unit can be furnished with a 24-volt
control circuit which is field-wired to a ClimateMaster-
supplied accessory remote thermostat.
Zone integrity must be maintained to efficiently control
units or groups of units. Unless zones of control are
considered and accounted for, adjacent units may
operate in heating and cooling modes simultaneously.
Low-voltage wiring between the unit and the wall
thermostat must comply with all applicable electrical
codes (i.e., NEC and local codes), and be completed
before the unit is installed.
Unit-Mounted Controls, TRC & CCE Units, Rev. B
CCE Revision B models and TRC models include digital
display unit-mounted controls (see picture, below). Either
manual changeover (MCO) or auto changeover (ACO)
controls are available, as indicated by the model number.
The room temperature will appear after the set point has
been displayed for 3 seconds. To read “set point” press
“SET”. To changes heating or cooling setpoints, slide
switch to desired mode (i.e. heating or cooling), and
press the arrow up or arrow down key to change the set
point. The differential between heating and cooling set
points is factory set at 3°F (1.5°C).
Unit-mounted controls are shipped from the factory
for display in degrees Farhenheit. To change display to
Celcius, follow the instructions below.
1. Turn power OFF.
2. Remove the thermostat cover (NOTE: Make sure to
depress the tab at the top of the thermostat to avoid
damaging the cover) and locate the jumper located at
top left of display case (see illustration, below).
3. Remove the Jumper for °C selection; leave the
jumper in place for °F selection.
4. Turn power ON.
5. Press RESET if desired measurement scale has not
been changed (See below for reset location).
Figure 5: Example MCO Thermostat
Figure 6: °F/°C Changeover
Electrical - Low Voltage
