57
17.- Connect all cables supplied, in accordance with the
corresponding wiring diagram.
18.- Turn main power supply on and program the control
unit.
19.- Close all panels.
Checking
1.- Program the thermostat in the winter cycle, start the com-
pressors and make sure the dampers open completely.
2.- Turn the unit off and program the thermostat in the sum-
mer cycle.
3.- Start the compressors and check to be sure that when
the pressure begins to rise above the programmed
26 bar, the dampers begin to close.
Once this pressure is reached, the dampers open to a
specific position, depending upon the outdoor tempera-
ture. With a very low outdoor temperature, the dampers
should be fully closed.
Location of components
Horizontal air discharge
VCH 20 to 90A
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Summary of Contents for York VCH 20A
Page 17: ...17 Technical characteristics General dimensions mm VCH 20A and 25A ...
Page 18: ...18 General dimensions mm VCH 30A and 40A ...
Page 19: ...19 General dimensions mm VCH 45A and 60A ...
Page 20: ...20 General dimensions mm VCH 75A and 90A ...
Page 21: ...21 General dimensions mm VIR 25A VIR 40A ...
Page 22: ...22 General dimensions mm VIR 45A and 60A VIR 75A and 90A ...
Page 23: ...23 Cooling diagram Variant chart ...
Page 31: ...31 Electric diagram VCH 20 25 30 40A 400 3 50 ...
Page 32: ...32 Electric diagram VCH 45 60 75 90A 400 3 50 ...
Page 33: ...33 Electric diagram VCH 45 60 75 90A 400 3 50 ...
Page 34: ...34 Configuration of switches ...
Page 43: ...43 Wiring diagram VIR 45 90 ...
Page 48: ...48 Wiring diagram Heater 10 15kW 400 3 50 VIR 25A 40A 45A and 60A ...
Page 49: ...49 Wiring diagram Heater 20 30 40kW 400 3 50 VIR 40A 45A 60A 75A and 90A ...
Page 59: ...59 VCH 20A to 40A VCH 45 to 90A ...
Page 61: ...61 Wiring diagrams ...
Page 62: ...62 Wiring diagrams ...
Page 69: ...69 Wiring diagram ...
Page 71: ......
Page 72: ...www johnsoncontrols com ...