Instructions / Assembly
Installing Your Heater 
Vent Installation 
This heater must be properly connected to a venting system. This 
heater  is  equipped  with  a  vent  safety  shutoff  system  to  protect 
against improper venting of combustion products. Tampering with 
or  removal  of  this  control  will  void  the  limited  warranty  and  can 
result in carbon monoxide (CO) poisoning and possible death. 
WARNING:  Operation  of  this  heater,  when  not 
connected  to  a  properly  installed  and  maintained 
venting system or tampering with the vent safety 
shutoff system, can result in carbon monoxide (CO) 
poisoning and possible death. 
This  appliance  needs  fresh  air  for  safe  operation  and  must  be 
installed so  there are  provisions for  adequate combustion  and 
ventilation  air.   This  room  heater  is equipped  with  a  vent  safety 
switch.    The  vent  safety  switch  will  cause  gas  flow  to  the  main 
burner to shutoff due to improper venting or a blocked flue.  If the 
vent safety  switch continues  to shut off the gas flow,  a qualified 
service person must be contacted to inspect for improper venting, 
blockage in the vent pipe or the vent safety switch  for being 
defective. 
WARNING:  Do  not  bypass  the  vent  safety  shutoff 
switch.  To  do  so could  expose  the  consumer  to 
property damage, personal injury or possible death. 
WARNING: Danger of illness, bodily injury or death. 
This heater and any other fuel burning appliance 
must  be  provided  with  enough  fresh  air  for  proper 
combustion  and  ventilation  of  flue  gases.    Most 
homes will require  that outside  air  be  supplied into 
the heater area. 
1.  An effective flue is necessary to carry off water vapor, carbon 
monoxide (CO), carbon dioxide (CO2), and other products of 
combustion.  For  proper  venting,  follow  the  following  basic 
rules for gravity venting, which are: 
a.  Keep the flue gases hot. 
b.  Follow the vent manufacturer's installation instructions. 
c.  Select the proper vent size. 
d.  Provide constant fresh air replacement. 
2.  For new installation, it is recommended that a Type “B” vent in 
accordance  with  its’  listing  be  used.  A  Type  “B”  vent  is  one 
made  of  non-combustible,  corrosion  resistant  material  of 
sufficient  thickness,  cross  sectional  area  and  heat  insulating 
quality to avoid excess temperatures on adjacent combustible 
material  and  certified  by  a  nationally  recognized  testing 
agency.  Existing  brick  flues should  be lined  to  provide an 
effective vent. Brick chimneys, even in good repair, may be too 
large and will not provide sufficient draft to effectively vent a 
heater. 
3.  Use vent pipe of the same size as the outlet on back of heater. 
In  no  case  should  a  different size  vent  be  used.  Single  wall 
vent  pipe  may  be  attached  directly  to  the  draft  hood  of  the 
room  heater when  a clearance  of  2-1/2 inches  (64mm) is 
maintained  between  the  single  wall  vent  pipe  and  the 
combustible wall of the room in which  the room heater is 
located. Use double wall vent pipe for clearances less than 2-
1/2 inches (64mm) to combustibles. 
4.  Avoid  a  horizontal run  to the  vent  pipe whenever  possible. 
When  a  horizontal  run  is  necessary,  the  pipe  must  pitch 
upward  at  least  1/4  inch  per  foot.  It  must  be  supported 
securely and joints fastened by sheet metal screws or rivets. 
Under no circumstances should the vent run downhill. 
5.  Never put a damper or barometric draft control in a gas vent 
pipe. 
6.  Never end a vent in an open attic or run a vent through a wall 
to the outside without extending it upward above the roof. 
7.  Always terminate the vent with an approved vent cap. 
8.  ALWAYS  SECURE  THE  VENT  PIPE  TO  THE  OUTLET  ON 
THE  BACK  OF  THE  HEATER  WITH  A  SHEET  METAL 
SCREW. 
9.  The flue pipe should extend through the wall of a chimney to 
be flush with the inner wall. 
10. The flue pipe must be adequately supported by metal strips. 
11. For the flue pipe running through walls and roofs, use B type 
(1 inch (25mm) clearance to combustibles) vent pipe. 
12. Vents should extend at least 2 feet (.6m) above the roof and 
above any object or nearby building within 10 feet (3m). 
13. Open tees should not be used in the flue pipe. 
14. The  heater must not  be  connected  to  a  chimney flue  that  is 
servicing a separate solid-fuel burning appliance. 
15. For proper venting, do not attach a 90 degree elbow directly to 
the draft diverter. It is recommended to attach 2 feet (.6m) of 
straight  vent  pipe  before  an  elbow  is  used.  Use  45  degree 
elbows if possible. Run flue pipe as direct as possible with not 
more than two elbows. 
16. The  use  of  more  than  one  appliance  per  vent  system  may 
cause the vent safety shutoff device to shut off the heater due 
to the cooling of vent temperatures through the draft diverter 
of the second appliance. 
17. The vent safety shutoff may shut down the heater if a too large 
or  an  unlined,  masonry  chimney  is  used.  The  vent  may  not 
warm quickly enough to get adequate vent action in a chimney 
before the shutoff device  will shut  down the  heater.  If this  is 
the  case,  it  is  recommended  lining  the  chimney  with  proper 
size type “B” vent pipe or type “B” chimney liner. 
18. Single-wall  metal  pipe  should  not  be  used  outdoors  in  cold 
climates or venting gas  equipment. If the vent  is  installed 
directly  outside,  the  cold  pipe  may  delay  the  venting  and 
cause the heater to shut-off by the vent safety switch. To 
prevent this problem, as well as condensation of flue products, 
an insulated enclosure is recommended. Use type B, vent 
pipe  and  maintain  at  least  a  one  inch  clearance  to 
combustibles.  Use a metal thimble to protect vent pipe as it 
passes through combustibles. 










