15
I-RIH (05-21) 131793-A
Figure 6. 120VAC DSI Heater Wiring Diagram
Wiring for Units with 24VAC Direct Spark Ignition (DSI) Single-Stage Controls
•
•
Electrical supply: 24VAC, 60 or 50Hz, 1PH
•
Maximum total heater current draw: 0 .66A
•
Total heater power consumed: 15 .9VA (15 .9W)
•
Two-wire field service required
•
Field wiring minimum temperature rating: at least 302°F (150°C)
•
Supply circuit wiring: minimum size of 16AWG (1 .0 mm
2
)
•
Control is polarity sensitive
GND
(+24)
GGS
BL
BL
GGS
VR*
SW*
MV*
LEGEND
(+24) = 24 VAC Supply Voltage
GND = Earth Ground
MV = Mechanical Ventilation
VR = Ventilation Relay
SW = Ventilation Interlock Switch
(normally opened)
GGS = Green Ground Screw
(inside control box)
BL = Blue Wire – 24 VAC call for heat
Thermostat
Heater 1
Heater 2
Greem Ground
Screw (GGS)
W(1)
BK(1)
W(2)
R(1)
W(3)
BK(2) - 1 & 2-burner
R(2) - 3 & 4-burner
O
O
Y
G
(-)
(+120)
GND
G
R(1)
W(2)
BK(1)
W(1)
Y
Combination
Gas Valve (CGV)
Ignition
Control
(IDC)
Flame
Sensor
(FS)
Spark
Electrode
(SE)
field wiring
Wire Colors
BK = Black
G = Green
O = Orange
R = Red
W = White
Y =Yellow
Figure 7. 24VAC DSI Heater Electrical Supply and Thermostat Wiring
