Transformer Questions:


7.1
Q.
Do I need to buy a transformer for each unit I order?
A.
No.  All zoning systems come with one plug-in or hardwired type 24 VAC Transformer, and that is all you need.
7.2
Q.
Can I wire several systems on one (1) transformer?
A.
No.  Each system must have its own transformer.
7.3
Q.
Do I have to use additional transformers after a certain number of dampers?
A.
No.  There is always only one transformer per system and it is sized according to panel model, not the number of dampers in a system.
7.4
Q.
Which systems use the 24V - 40VA plug-in transformer?
A.
The 200 Series as well as the AB series systems.
7.5
Q.
What is the 24 VAC Transformer power used for?
A.
The 24 VAC Transformer supplies power for the control panel, all the thermostats, air pump and solenoids.
7.6
Q.
Can I use the HVAC Transformer to share its power with the unit and thermostats?
A.
No.  They must NOT be interconnected.
7.8
Q.
Is there a Ground Terminal provided?
A.
A ground terminal is provided on the circuit board.  We recommend connecting this to a known Electrical Ground or a cold water pipe.
7.9
Q.
My heating and cooling systems are on different transformers. What do I do about that?
A.
You will simply add an isolation relay to control the heating.
The coil side of the relay will be connected to the HVAC W and C Output terminals on the panel.
The heating transformer R wire is connected to the Relay Common terminal.  The relays normally-open terminal is connected to the W1 (Heat Terminal) on the furnace. Contact Tech Support for a wiring diagram.

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