Thisheatershallnotbeinstalledinaconfinedspaceorunusuallytightconstructionunlessprovisionsare
provided for adequate combustion and ventilation air.
Unusually tight construction is defined as construction where:
(a) Wallsandceilingsexposedtotheoutsideatmospherehaveacontinuouswatervaporretarder
with a rating
of 1 perm (6 x 10 kg per pa-sec-m²) or less with openings gasketed or sealed, and
(b) Weather stripping has been added on openable windows and doors, and
(c) Caulking or sealants are applied to areas such as joints around window and door frames,
between sole plates and floors, between wall-ceiling joints, between wall panels, at penetrations
for plumbing, electrical, and gas lines, and at other openings.
The National Fuel Gas Code defines a confined space as a space whose volume is less than 50 cubic
feet per 1,000 BTU per hour (4.8m per kw) of the aggregate input rating of all appliances installed in that
space and an unconfined space is defined as a space whose volume is not less than 50 cubic feet per
1,000 BTU per hour (4.8m per kw) of the aggregate input rating of all appliances installed in that space.
Roomscommunicatingdirectlywiththespaceinwhichtheappliancesareinstalled,throughopeningsnot
furnished with doors, are considered a part of the unconfined space.
6
ADEQUATE COMBUSTION AND VENTILATION AIR
ITEMS REQUIRED FOR INSTALLATION
ITEMS REQUIRED FOR INSTALLATION
Ensurethatthefollowingitemsareavailablebeforeproceedingwithinstallation:
•Externalregulator(forpropane/LPGonly) •Manualshutoffvalve
•Pipingwhichcomplieswithlocalcodes •Sedimenttrap
•Pipesealantapprovedforusewith •Pipewrench
propane/LPG(resistanttosulfurcompounds)
CODES
Adheretoalllocalcodesorintheirabsence,thelatesteditionofTHENATIONALFUELGASCODEANSIZ223.1
orNFPA54whichcanbeobtainedfrom:
AmericanNationalStandardsInstitute,Inc. NationalFireProtectionAssociation,Inc.
1430Broadway or BatterymarchPark
NewYork,NY10018 Quincy,MA02269
WARNING
3
Duetohightemperatures,donotinstalltheheater:
• Wherecurtains,furniture,clothingorotherflammableobjectsarelessthan42"
fromthefrontoftheheater.
• Inhightrafficareas.
• Inwindyordraftyareas.
DO NOT PLACE CLOTHING OR OTHER FLAMMABLE MATERIAL ON OR NEAR THE
APPLIANCE.
