WATTS IOM-T-564 tekmar Invita WiFi Thermostat Instruction Manual
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 oper-
ate at lower speeds when the heat pump is off, thereby saving electrical energy.
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| General | Details |
|---|---|
| Name | WATTS IOM-T-564 tekmar Invita WiFi Thermostat Instruction Manual |
| Make | WATTS |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.66 MB |

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