ClimateMaster DC Series Installation Manual download pdf (Page 33)

Residential H&V - 60Hz R22 &R410A

Rev.: 22 Dec, 2008

climatemaster.com

CXM Control Start-up Operation

The control will not operate until all inputs and safety

controls are checked for normal conditions. The compressor

will have a 5 minute anti-short cycle delay at power-up. The

ﬁ rst time after power-up that there is a call for compressor,

the compressor will follow a 5 to 80 second random start

delay. After the random start delay and anti-short cycle

delay, the compressor relay will be energized. On all

subsequent compressor calls, the random start delay is

omitted.

T-stat signal

TT TS/GS TS/GS

ECM fan ECM fan PSC fan

G Fan only Fan only Fan only

G, Y or Y1 Stage 1 heating

Stage 1 heating

G, Y1, Y2 Stage 2 heating

Stage 2 heating

G, Y1, Y2, W Stage 3 heating

Stage 3 heating

N/A

G, W Emergency heat Emergency heat Emergency heat

G, Y or Y1, O Stage 1 cooling

Stage 1 cooling

Cooling

G, Y1, Y2, O Stage 2 cooling

Stage 2 cooling

N/A

1 Stage 1 = 1st stage compressor, 1st stage fan operation

Stage 2 = 2nd stage compressor, 2nd stage fan operation

Stage 3 = 2nd stage compressor, auxiliary electric heat, 2nd

or 3rd stage fan operation (depending on fan settings)

2 Stage 1 = 1st stage compressor, 1st stage fan operation, reversing valve

Stage 2 = 2nd stage compressor, 2nd stage fan operation, reversing valve

3 Stage 1 = compressor, 1st stage fan operation

Stage 2 = compressor, 2nd stage fan operation

Stage 3 = compressor, auxiliary electric heat, 2nd or 3rd stage fan operation (depending on fan settings)

4 Stage 1 = compressor, 1st stage fan operation, reversing valve

Stage 2 = compressor, 2nd stage fan operation, reversing valve

5 Stage 1 = compressor, fan

Stage 2 = compressor, auxiliary electric heat, fan

6 Cooling = compressor, fan, reversing valve

Table 6b: Unit Operation

CXM Controls

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ClimateMaster DC Series Installation Manual Page 33

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