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Idiomas disponibles
Idiomas disponibles
2
Provide Power
• For 24 Volt AC power, you must connect the common side of the trans-
former to the C terminal on the thermostat sub-base.
• For primary or back-up power, insert the 2 supplied "AA" type alkaline
batteries into the battery compartment located in the rear housing of the
thermostat. Make sure to position the Positive (+) and Negative (-) sides
of the batteries correctly with the +/- symbols in the battery compartment.
3
Connect Your Wires
Conventional Systems
Typical Wiring Configurations
NOTE: The "Installer Switch" option will be configured in the next step.
Heat Only or Millivolt
Set Installer Switch to CONV
Rh Power Connection
W Heat Relay (appears as W1/E on PRS3210)
G
Fan Relay [note 4]
C
24 Volt AC Transformer Common [note 1]
1 HEAT / 1 COOL Single or Dual Transformer
Set Installer Switch to CONV
Rh 24 Volt AC Power (heating transformer) [note 2]
Rc 24 Volt AC Power (cooling transformer) [note 2]
W1 Heat Relay (appears as W1/E on PRS3210)
Y1 Compressor Relay
G
Fan Relay
C
24 Volt AC Transformer Common [note 1, 3]
2 HEAT / 1 COOL Single or Dual Transformer
(PRS3210 Only)
Rh 24 Volt AC Power (heating transformer) [note 2]
Rc 24 Volt AC Power (cooling transformer) [note 2]
W1 Heat Relay Stage 1
W2 Heat Relay Stage 2
Y1 Compressor Relay Stage 1
G
Fan Relay
C
24 Volt AC Transformer Common [note 1, 3]
NOTES - Conventional Systems
[1] If batteries are installed the 24 Volt AC common connection is optional
[2] Remove factory installed jumper for dual transformer systems
[3] In dual transformer systems, transformer common must come from
cooling transformer
[4] If needed for system
Provide disconnect and overload protection as required.
Set System Type to CONV
2
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