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© 2019 tekmar 564_Q - 10/19
Essential Settings:
Accessory Relay 1 or 2 = Dehumidifier
Dehumidifier Type = DX Coil
The thermostat operates the cooling system and runs the system fan at low speed to
dehumidify the air.
Dehumidification using a DX Coil
HVAC Interface Module
564
Rh1
C
R
W1
Acc1
Acc1
Rh2
W2
Rc
Y1
G
Y2
To
T-Stat
AWAY
S1
S3
S2
Water
Detect
RH
3V3
SEN
COM
Acc2
O/B
Acc2
O/B
C
R
W1
W2
Y2
Y1
G
Dehum
70
Air
Handling
Unit
HVAC Interface Module
564
Rh1
C
R
W1
Acc1
Acc1
Rh2
W2
Rc
Y1
G
Y2
To
T-Stat
AWAY
S1
S3
S2
Water
Detect
RH
3V3
SEN
COM
Acc2
O/B
Acc2
O/B
G
R
HRV / ERV
Ventilator
The Heat Recovery Ventilator (HRV) or Energy Recovery Ventilator (ERV)
operates to improve indoor air quality and recovers heat from exhaust air.
Essential Settings:
Accessory Relay 1 = Ventilation
HRV/ERV Ventilator
External Jumper Wires:
R to Acc1
R to O/B
HVAC Interface Module
564
Rh1
C
R
W1
Acc1
Acc1
Rh2
W2
Rc
Y1
G
Y2
HUM
HUM
To
T-Stat
AWAY
S1
S3
S2
Water
Detect
RH
3V3
SEN
COM
Acc2
O/B
Acc2
O/B
Humidifier
The thermostat operates a humidifier to increase relative humidity.
Humidifier
Essential Settings:
Accessory Relay 1 or 2 = Humidifier
• Installing an outdoor sensor provides more accurate
outdoor temperature readings compared to using the
weather information from the internet.
• Outdoor temperature is displayed on home screen.
• Used to enable heat pump dual fuel switchover, warm
weather shut down, and cold weather shut down.
Outdoor Sensor
HVAC Interface Module
564
Rh1
C
R
W1
Acc1
Acc1
Rh2
W2
Rc
Y1
G
Y2
To
T-Stat
AWAY
S1
S3
S2
Water
Detect
RH
3V3
SEN
COM
Acc2
O/B
Acc2
O/B
tekmar Outdoor
Sensor 070
