T H E S M A R T S O L U T I O N F O R E N E R G Y E F F I C I E N C Y
Consoles
R e v. : 0 8 / 2 4 / 1 5
21
c l i m a t e m a s t e r. c o m
LT1
LT2
Figure 4: LT1 Limit Setting
CXM PCB
JW3-LT1 jumper should
be clipped for low
temperature operation
Field Supplied
Disconnect Switch
Heat Pump
A
Room Thermostat
B
A= Two power wires on single-phase units: three power
wires on three-phase units. B= 1 heat /1 cool /manual
or Auto Change-over remote 24V thermostat. Note: All
customer-supplied wiring to be copper only and must
conform to NEC and local electrical codes. Wiring
shown with dashed lines must be fi eld-supplied and
fi eld-installed. "B" only required with systems employing
remote mounted thermostats.
Figure 3: Typical Field Installed Wiring
WARNING!
To avoid possible injury or death due to electrical
shock, open the power supply disconnect switch and secure
it in an open position during installation.
CAUTION!
Use only copper conductors for fi eld installed
electrical wiring. Unit terminals are not designed to accept
other types of conductors.
Low Water Temperature Cutout Setting - CXM Control
When antifreeze is selected, the LT1 jumper (JW3) should
be clipped to select the low temperature (antifreeze
10.0°F [-12.2°C]) setpoint and avoid nuisance faults (see
“Low Water Temperature Cutout Selection” in this
manual).
Note: Low water temperature operation
requires extended range equipment.
CAUTION!
WARNING!
