WATTS IOM-T-563 Tekmar WiFi Thermostat Installation Guide
Sequence of Operation
Heating Operation
• The heating setpoint can be set from 40 to 95°F (4.5 to 35°C).
• The Heat On symbol is shown on the display when the thermostat is heating.
• Heating for freeze protection is provided whenever the air or floor temperature falls below 40
(4.5°C), regardless of operating mode.
°F
• The cooling setpoint can be set from 45 to 100°F (7.0 to 38.0°C).
• The Cool On symbol is shown on the display when the thermostat is cooling.
The thermostat supports two heating system types: 1) conventional, or 2) heat pump.
Conventional Systems
A conventional heating system includes: furnaces, air conditioners, hydronic heating
systems with baseboards, radiant floors, or fan coils and electric heating.
The thermostat supports up to two heating stages, two cooling stages, a fan and two
accessory relays.
Equipment Setting
First stage heating
Second stage heating
First stage cooling
Second stage cooling
Fan
1H/1C
1H/2C
W1
-
2H/1C
W1
W2
Y1
2H/2C
W1
W2
Y1
W1
-
Y1
-
Y1
Y2
-
Y2
G
Accessory 1
Choice of: Humidifier, Dehumidifier, HRV/ERV
Choice of: Humidifier, Dehumidifier
Accessory 2
Heat Pump Systems
A heat pump system may include additional heat sources as backup. The thermostat
supports up to four heating stages, two cooling stages, a reversing valve, a fan and one
accessory relay.
Equipment Setting
1HP
1HP/
1Aux
1HP/
2Aux
2HP
2HP/
1Aux
2HP/
2Aux
First stage heating
Second stage heating
Third stage heating
Fourth stage heating
First stage cooling
Second stage cooling
Fan
Y1
-
Y1
W1
-
Y1
W1
W2
-
Y1
Y2
-
Y1
Y2
W1
-
Y1
Y2
W1
W2
Y1
-
-
-
-
Y1
-
Y1
-
Y1
-
Y1
Y2
Y1
Y2
Y2
G
Accessory 1
Choice of: Humidifier, Dehumidifier, HRV/ERV ventilator
Accessory 2
Reversing valve O relay remains closed during cooling.
Reversing valve B relay remains closed during heating.
10
| 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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