4. CONTROLS (CONT’D)
4.4OPTIONAL AUXILIARY WALL CONTROLS OPERATION
4.4.1
Set the
To stop activation, push one time; the unit will then get back to previous selection.
4.4.2
ON |
VC0084
TURN OFF PAST
2010
20
This control makes the system operate at high speed for periods varying from 10 to 60 minutes.
30
60 40
50
VC0017
4.4.3HUMIDITY CONTROL
Setting during the fall, winter and spring months:
Adjust knob to the desired maximum humidity level.
Setting during summer:
Adjust knob to the OFF positon.
CAUTION
Do not select a humidity level below 30%. This could lead to excessive dryness in the air causing discomfort for the occupants.
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| LATIVE HUMI | |
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| RE | DIT | |
| 20% | % |
| Y |
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| F | |
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| O |
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HUMIDITY | 25% |
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CONTROL |
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| 70% |
| 30% | C |
| 60% |
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| NE | |
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| OM FO RT ZO | |
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| 40% | 50% |
VC0085
5. ELECTRICAL CONNECTION TO THE FURNACE
0! WARNING
Never connect a
For a furnace connected to a cooling system:
On some older thermostats, energizing the “R” and “G” terminals at the furnace has the effect of energizing “Y” at the thermostat and thereby turning on the cooling system. If you identify this type of thermostat, you must use the alternate furnace interlock wiring.
Standard furnace interlock wiring | Alternate furnace interlock wiring |
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| THERMOSTAT |
W | R | G | Y | TERMINALS |
FOUR |
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WIRES |
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TWO WIRES |
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heating only |
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W |
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R |
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G |
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C |
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Y |
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FURNACE
TERMINAL BLOCK
TWO WIRES
NO
C |
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NC | UNIT |
I OC OL Y R G | TERMINAL CONNECTOR |
B |
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COOLING SYSTEM
NO
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| THERMOSTAT | C |
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W | R | G | Y | NC | UNIT | ||
TERMINAL | |||||||
4 WIRES |
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| IOCOLYRG | TERMINALCONNECTOR | ||
2 WIRES |
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heating only |
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W |
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| NO |
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R |
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| NC |
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G |
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| B |
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C |
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Y |
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Y |
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FURNACE |
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TERMINAL BLOCK |
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| 2 WIRES |
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| COOLING SYSTEM | |||
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VE0108A
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