Form #43219020
7
June 08
TYPICAL THERMOSTAT WIRING
9)
VENTILATION
This heater requires ventilation in the building to dilute the products of combustion and provide fresh air for efficient
combustion. Power ventilation is recommended and the minimum vent flow required is as follows:
SG3
128 cfm
SG10
384 cfm
SG4
150 cfm
SG12
448 cfm
SG6
256 cfm
SG13, SG14
512 cfm
SG8
300 cfm
SG15
600 cfm
If gravity ventilation is used, the required square feet of inlet and outlet vent area (depending on height and temperature
difference) is as follows:
SG3
0.49 s/f
SG10
1.48 s/f
SG4
0.57 s/f
SG12
1.72 s/f
SG6
0.98 s/f
SG13, SG14
1.97 s/f
SG8
0.98 s/f
SG15
2.30 s/f
The General Ventilation Rules outlined in ASHRAE GUIDE AND DATA BOOK should be observed when locating vents. Exhaust
vents must be located at the highest point above and in the vicinity of the heaters and the inlet vents must be located below
the level of the heaters.
120V
Neutral
Hot
Ground
Thermostat
Service
Switch
Heater
Continue to
additional
heaters
Continue to
additional
heaters
120V
Neutral
Hot
Ground
Thermostat
Service
Switch
Heater
Service
Switch
Heater
Single Heater Per Thermostat
Multiple Heaters Per Thermostat
