Electrical - Model 94-EXCHANGER-MD ONLY
Remote Control Connections
Electrical connections should be made by a qualified ser- vice technician. Low voltage wires from the remote controls are connected to the damper motor terminals.
Identify the appropriate installation type and connect as per illustration.
120 VAC
OPTIONAL |
TRANSFORMER |
24 VAC
120 VAC
OPTIONAL |
TRANSFORMER |
OPTIONAL RELAY (SPST)
WARNING
In order to prevent electric shock when cleaning or servicing the HRV, it is extremely important to confirm the polarity of the power line that is switched by the safety (disconnect) switch. The hot line (black) is the proper line to be switched. To confirm the proper polarity, use a voltmeter or test lamp to ensure there is no power after the switch when the door is open. Check between that point and ground (on the cabinet). Always make sure that the HRV is properly grounded.
WARNING
On older thermostats, energizing the R and G terminals at the forced air system has the effect of energizing the Y terminal at the thermostat and thereby activating the cooling system. If you identify this type of thermostat, you must use option 3.
120 VAC
OPTIONAL |
TRANSFORMER |
OPTIONAL RELAY (SPST)
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