WATTS IOM-T-563 Tekmar WiFi Thermostat Installation Guide
HRV / ERV Ventilator Operation
Ventilation with fresh outdoor air is important for maintaining indoor air quality. The thermostat
can operate a heat recovery ventilator (HRV) or energy recovery ventilator (ERV) on a timer by
closing the Accessory 1 relay to operate the ventilator fan at low speed.
Heat Pump Loop Valve Operation
The thermostat supports water-to-air heat pump systems that absorb or reject heat to a
hydronic building loop. Whenever the heat pump compressor Y1 or Y2 relay is turned on,
the Accessory 1 relay closes to open a hydronic zone valve. This allows variable speed
pumps on the hydronic loop to operate at lower speeds when the heat pump is off, thereby
saving electrical energy.
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| General | Details |
|---|---|
| Name | WATTS IOM-T-563 Tekmar WiFi Thermostat Installation Guide |
| Make | WATTS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.63 MB |

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