Tekmar 521 Installation & Operation Manual page 11

Thermostat Wiring
Air Conditioner
Furnace (second stage heat)
Furnace and Air Conditioner
Field Jumper Required:
• R to Rh
• Rh to Rc
• Rc to G
Air
Conditioner
A Watts Water Technologies Company
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-- - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -- - - - - - -- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- - - - --- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - --- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
G
Y
W
R
C
Furnace
Field Jumper Required:
Rc to G
C R Rh W1 Y/W2 Rc G G
Com
Field Jumper Required:
Rc to G
C R Rh W1 Y/W2 Rc G G
C R Rh W1 Y/W2 Rc G G
11 of 28
R Y G
No Power
S1 S2
Air
Conditioner
No Power
S1 S2
Com
Furnace
No Power
S1 S2
Com
© 2020
R W G
521_D - 12/20