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I have an ERV driven by a relay controlled by an Air Cycler.

I recently installed a Thermo Pride O6 furnace. The O6 has 120 VAC output to control EAC. Can I plug my ERV directly into this outlet instead of going through a relay?

Update with additional info:

Right now I have 2 Air Cyclers (one for each zone), that control 2 relays connected in OR configuration that in turn drive the remote controller of my ERV.

My problems are:

  1. We do not use Air Cyclers during spring/summer/fall when we live with open windows but we still want air exchange during days when we run A/C.
  2. My connection to ERV is clanky in several respects. It will be really nice to plug my ERV directly into my furnace and let it run as long as the heating/cooling fan is running.

My main question is does the EAC output provide enough power for a 0.25 HP motor in my ERV?

Update 2:

I found a description of the control unit (rebranded) used by my system Renewaire PTL.

From that, I learned that I can control my ERV with a single relay with 150 ohm 1/8 wt resistor in the circuit. It seems in sync with the electrics of my ERV, which supplies the control circuit with 24 VAC + diode.

So my plans are as follows I will use 115 VAC relay, and 150 ohm 2wt rated resistor (1/8 wt seems too low).

My questions could be reformulated as:

  1. What 115 VAC relay should I use to control a 24 VAC circuit?
  2. Are there some small boxes to house the relay and the resistor? C. Are there any restrictions on resistor type?
FreeMan
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zzz777
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1 Answers1

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I used this hobby box, this relay, and thisresitor. The 150 Ohm 1/8 W resistor looked too scary for a 24V circuit, so I used a 5 W resistor. The schematic is from the control box description. Works fine.

zzz777
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