110
**WARNING: DO NOT APPLY 24VAC TO THE V/W2 TERMINAL ON THE IFC (THIS IS OFTEN DONE DURING SETUP, TROUBLESHOOTING AND/OR
DIAGNOSING PROBLEMS). DOING SO WILL DAMAGE THE THERMOSTAT.
➤
FIGURE 89
WIRING DIAGRAM FOR SINGLE-STAGE HEAT (NON-COMMUNICATING)
* NO MECHANICAL THERMOSTATS.
** 40%, 65%, and 100% FIRING RATE IN SINGLE-STAGE OPERATION. 40% FIRING RATE IN TWO-STAGE OPERATION
(DIP SWITCH SET SW2 — SWITCHES 1 & 2 OFF).
*** 2 STG. COOLING ONLY.
YL (Y1)
***
YL (Y1)
Y (Y2)
***
Y
H (Y2)
Y Y2
1-STAGE ELECTRONIC THERMOSTAT*
(NON-COMMUNICATING)
FIGURE 88
FULLY MODULATING – TYPICAL DUAL FUEL APPLICATION - TWO STAGE HEAT PUMP (NON-COMMUNICATING)
NON-COMMUNICATING
THERMOSTAT (1)
**
* NO MECHANICAL THERMOSTATS.
** 40%, 65%, and 100% FIRING RATE IN SINGLE-STAGE OPERATION. 40% FIRING RATE IN TWO-STAGE OPERATION
(DIP SWITCH SET SW2 — SWITCHES 2 & 3 OFF).
*** 2 STG. COOLING ONLY.
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