tekmar 521 Programmable Thermostat Installation - Manual (Page 11)

© 2014 521_D - 01/14
11 of 28 A Watts Water Technologies Company
Thermostat Wiring
Air Conditioner ----------------------------------------------------- -----------------------------------------------------
Furnace (second stage heat) ----------------------------------------- -----------------------------------------
Furnace and Air Conditioner ---------------------------------------- ----------------------------------------
R Y G
C R Y/W2 Rc G G Rh W1 S1 S2 Com
No Power
Air
Conditioner
C R Y/W2 Rc G G Rh W1 S1 S2 Com
No Power
R W G
Furnace
C R Y/W2 Rc G G Rh W1 S1 S2 Com
No Power
C
R
W
Y
G
Furnace
Air
Conditioner
Field Jumper Required:
R to Rh
Rh to Rc
Rc to G •
•
•
Field Jumper Required:
Rc to G
Field Jumper Required:
Rc to G