How to Explain Honeywell W7212 Economizer Controls

The Honeywell W7212 DCV is Honeywell’s most popular economizer due to its simplicity. The Honeywell W7212 DCV adjusts settings on equipment such as heat pumps to help improve the economy of the equipment. A utilitarian device such as this will save you money, if you know how to use it. The W7212 DCV has three adjustable controls built into it that you can use to improve the energy efficiency of your heat pump.

Instructions

- 1
  Turn the control for EXH to select the correct voltage for your exhaust fan. You can turn the dial to select voltage between 2 volts and 12 volts of power. It is important that the voltage matches the voltage requirements for the fan to ensure you provide the correct voltage. This prevents the heat unit from sending too much voltage to the fan, which wastes electricity. The LED light located directly under the control turns on when the exhaust fan turns on.
- 2
  Turn the control labeled “MIN POS” to adjust the minimum damper setting for the heating unit. The damper controls the amount of airflow through the heating unit. The more you rotate the control clockwise, the more air will flow through the unit. This particular control does not require an LED status light.
- 3
  Turn the control for DVC between 2 volts and 10 volts to match the requirements for the damper. This ensures the damper does not take too much electricity when turned on. The damper has an LED status light to show when the damper is working at full capacity.

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