Fast TS21 User Manual

WIRING LEGEND
TERMINAL EQUIPMENT STANDARD COLOR
Y1 First Heat Pump & AC Yellow
G Fan Green
W2 First Stage Furnace White
OBW Reverse Valve - Second Stage Furnace Orange
RH 24v Red
Y2 Second Heat Pump & AC Unknown
C Common Blue
H Humidity Control Unknown
DH Dehumidity Control, Variable Fan Control Unknown
RC 24v Unknown
11 & 12 Not Used
NOTE: The above colors are standard in HVAC industry. The wiring should be confirmed before installation
WIRING TABLE
CONFIGURATION Y1 Y2 W2 OB/W R/C R/H G
1 Stage Cooling, 2 Stage Heating
Air Conditioner 2 Stage Gas AC Gas1 Gas2 x x x
Air Conditioner Electrical Furn. AC El.Furn1 El.Furn2 x x x
Air Conditioner Emg. El. Furn. AC Emg. El. Furn. El.Furn1 El.Furn2 x x x
Air Conditioner Gas AC Gas1 Gas2 x x x
Air Conditioner Oil AC Oil1 Oil2 x x x
Heat Pump Electrical Furn. HP El.Furn OB x x x
Heat Pump Gas HP Gas OB x x x
Heat Pump Oil HP Oil OB x x x

Fast TS21 Specifications

General

Brand	Fast
Model	TS21
Category	Thermostat
Language	English