IM 1227 • MODELS DC THERMOSTATS 58 www.DaikinApplied.com
high resoluTion TouCh sCreen DigiTal ThermosTaT
Thermostat Backplate
TSTATD4271CGT Models
Figure 56: TSTATD4271CGT Backplate
NOTE: The backplate does not fully cover a full size vertical
junction box. The TSTATGTAC-WP TouchScreen
Wallplate or a single-gang, horizontally mounted
junction box would be needed for that type of
installation
To remove the thermostat backplate: Using the Finger Pull
Areas, pull the front housing away from the backplate.
Look for these tabs to locate the pull areas
Pull out with thumbs in these areas
W3 3rd stage heat circuit/2nd stage aux heat
W2 2nd stage heat circuit/1st stage aux heat
W1/O/B 1st stage heat circuit/reversing valve
Y2 2nd stage compressor relay
Y1 1st stage compressor relay
G fan relay
R 24 VAC return
C 24 VAC common
SENSOR remote/outdoor/supply/return sensor connections
IMPORTANT: This thermostat requires both R (24 VAC Return) and C (24 VAC
Common) be connected to the backplate terminals.
TSTATD4272CGT Models
Figure 57: TSTATD4271CGT Backplate
NOTE: The backplate does not fully cover a full size vertical
junction box. The TSTATGTAC-WP TouchScreen
Wallplate or a single-gang, horizontally mounted
junction box would be needed for that type of
installation
To remove the thermostat backplate: Using the Finger Pull
Areas, pull the front housing away from the backplate.
Look for these tabs to locate the pull areas
Pull out with thumbs in these areas
W3/AUX
3rd stage heat circuit/2nd stage aux heat/humidication/
dehumidication
W2 2nd stage heat circuit/1st stage aux heat
W1/O/B 1st stage heat circuit/reversing valve
Y2 2nd stage compressor relay
Y1 1st stage compressor relay
G fan relay
R 24 VAC return
C 24 VAC common
SENSOR remote/outdoor/supply/return sensor connections
IMPORTANT: This thermostat requires both R (24 VAC Return) and C (24 VAC
Common) be connected to the backplate terminals.
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