Installation and Operation Manual
Form #43219020 
Sept 2012 
 Fire  sprinkler  heads  must  be  located  at  an  appropriate  distance  from  the  heater.  This 
distance  may  exceed  the  published  clearance  to  combustibles.  Certain  applications  will  require  the  use  of 
high temperature sprinkler heads or relocation of the heaters. 
Sprinkler  systems  containing  propylene  glycol  or  other  flammable  substances  are  not  to  be  used  in 
conjunction  with  this  heater  without  careful  consideration  for  and  avoidance  of  potential  fire  or  explosion 
hazards. For further information consult NFPA 13. Always observe applicable state and local codes. 
5)  SG SERIES SPECIFICATIONS 
COMPLETE MODEL 
& SUFFIXES 
BTU/HR INPUT 
NUMBER 
OF BURNERS 
ORIFICE SIZE
SHIPPING WEIGHT 
MINIMUM 
MOUNTING 
HEIGHTS (FEET) 
Natural Gas 
Propane Gas 
SG3-N5C, N5D 
  33,000 
1 
3/32” 
n/a 
30 lbs. 
12 
SG4-N5C, N5D 
  40,000 
1 
#38 
n/a 
30 lbs. 
12 
SG6-N5C, N5D 
  65,000 
2 
3/32” 
n/a 
35 lbs. 
13 
SG8-N5C, N5D 
  80,000 
2 
#38 
n/a 
35 lbs. 
14 
SG10-N5C, N5D 
  100,000 
3 
#41 
n/a 
48 lbs. 
15 
SG12-N5C, N5D 
  120,000 
3 
#38 
n/a 
48 lbs. 
16 
SG14-N5C, N5D 
  140,000 
4 
#41 
n/a 
58 lbs. 
17 
SG15-N5C, N5D 
  155,000 
4 
#38 
n/a 
58 lbs. 
18 
SG3-L5C, L5D 
  32,000 
1 
n/a 
#52 
30 lbs. 
12 
SG6-L5C, L5D 
  65,000 
2 
n/a 
#52 
35 lbs. 
13 
SG10-L5C, L5D 
  100,000 
3 
n/a 
#52 
48 lbs. 
15 
SG13-L5C, L5D 
  140,000 
4 
n/a 
#52 
58 lbs. 
17 
MODEL SUFFIXES: 
GAS-PIPE 
CONNECTION: 
One Orifice Per Burner 
Gas Type: 
Ignition System: 
N = Natural 
L = Propane 
5 = Direct Spark (115 Volt / 0.40 Amp / 60 Hz) 
1/2” NPT (Female) 
*MOUNT HEATERS AS HIGH AS POSSIBLE. Minimums are shown as a guideline for human comfort and 
uniform energy distribution for complete building heating applications. Consult your SunStar representative 
for the particulars of your installation requirements. 
6 
 INSTALLER 
In locations used for storage of combustible materials where they may be stacked below the heater, 
NFPA  54  requires  that  the  installer  must  post  signs  that  will  “specify  the  maximum  permissible 
stacking  height  to  maintain  the  required  clearances  from  the  heater  to  combustibles.”    Sunstar 
recommends posting these signs adjacent to the heater thermostat or other suitable location that will 
provide enhanced visibility. It is important to provide warnings to alert individuals of potential hazards 
and safety actions. Posted signs should state the hazards for the particular application and be legible 
to building occupants. 










