Generac — Control of Air Conditioner Load
Installation · SACM air conditioner control
From a Generac service manual covering: RTSC400A3, RTSW300A3, RTSW400A3. Check it applies to your exact model before use.
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Before you start
- Control of certain heat pumps and 2-stage air conditioners may require special connections or the use of SMMs.
Procedure
- Route the thermostat cable from the furnace/thermostat to the outdoor air conditioner unit to the transfer switch.
- Connect the wire to the terminal strip terminals (A/C 1) on the SACM.
- These are normally closed contacts which open upon load shed conditions.
- If required, connect additional air conditioners to the terminal strip terminals (A/C 2-4).
Specs & values
- A/C 1-4 contact ratings: 24 VAC, 1.0 Amp max
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.