ClimateMaster DC Series Installation Manual download pdf (Page 34)

Residential H&V - 60Hz R22 &R410A

Rev.: 22 Dec, 2008

Water-Source Heating and Cooling Systems

CXM Controls

CXM Thermostat Details

Thermostat Compatibility - Most all heat pump thermostats

can be used with the CXM control. However Heat/Cool

stats are NOT compatible with the CXM.

Anticipation Leakage Current - Maximum leakage current

for "Y" is 50 mA and for "W" is 20mA. Triacs can be used

if leakage current is less than above. Thermostats with

anticipators can be used if anticipation current is less than

that speciﬁ ed above.

Thermostat Signals -

• "Y" and "W" have a 1 second recognition time when

being activated or being removed.

• "O" and "G" are direct pass through signals but are

monitored by the micro processor.

• "R" and "C" are from the transformer.

• "AL1" and "AL2" originate from the alarm relay.

• "A" is paralleled with the compressor output for use

with well water solenoid valves.

• The "Y" 1/4" quick connect is a connection point to the

"Y" input terminal P1 for factory use. This "Y" terminal

can be used to drive panel mounted relays such as the

loop pump relay.

Table 7: Nominal resistance at various temperatures

ϒ ϒ ϒ ϒ

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ClimateMaster DC Series Installation Manual Page 34