Product Manual

 Once all wires are identified and a picture is taken, disconnect all of the wires and
remove the existing thermostat. Remember to secure the wires so they do not fall
into the wall.
o Prep wires if needed
 Follow these guidelines for safe and secure wire connections:
• Ensure the wires are a proper gauge between 16-24 AWG (1.5 – 0.5 mm
2
)
• Make sure wires have exposed straight ends of the appropriate length.
 !CAUTION: Verify that the system is 24 VAC. If the old system is labeled as 120 or
240 volts or has wire nuts, the system is high voltage. Do not install the thermostat
on a high voltage system. Contact a local HVAC professional for help.
• Smart Thermostat HD Installation – Thermostat Install
o Level and mount the Thermostat to the wall with the supplied hardware
o If additional support is necessary, drill holes with a 3/16’’ (#13) drill bit and tap in the
drywall anchors.
o Mount trim plate prior to securing the Thermostat to the wall if required to cover up any
marks or holes left from the old thermostat.
o Insert the used wires into the designated wire terminals
Terminal
Description
Rc
Cooling Power
Rh
Heating Power
W2
Heat/Aux Stage 2
W
Heat/Aux Stage 1
C
Common wire from transformer for Rh
Z1
Configurable: W3, Humidifier, Dehumidifier, Vent
Z2
Configurable: W3, Humidifier, Dehumidifier, Vent
Y
Cool/Pump Stage 1
Y2
Cool/Pump Stage 2
G
Fan
O
Heat Pump Reversing Valve (Energized in COOL mode)
B
Heat Pump Reversing Valve (Energized in HEAT mode)
 !IMPORTANT If you only have one R wire, insert it into Rh.
 !CAUTION Do not insert more than one wire into a wire terminal as this will damage
the wire terminal.
 !CAUTION If you only have one R wire, there is no need to physically jump Rh and
Rc, the thermostat will internally jump the two.
o Once all wires are inserted into the wire terminals, return power to the HVAC system.
 This will supply 24 VAC power to the Thermostat
o Check the Status LED, which will indicate the Thermostat has power.
 If the Status LED is off, it indicates the Thermostat does not have 24 VAC power
• Visually verify both Rh and C are securely inserted into the appropriately
labeled terminals.
• Verify the HVAC system has power, this may be identified at the unit.
• Verify the circuit breaker was appropriately turned back on.