READ CAREFULLY BEFORE INSTALLING UNIT
This appliance must be installed in accordance with local codes, if any; if not, follow the National Fuel Gas Code, ANSI Z223.1/
NFPA 54 or the Natural Gas and Propane Installation Code, CSA-B149.1.
This appliance, when installed, must be electrically grounded in accordance with local codes, or in the absence of local codes,
with the National Electrical Code, ANSI/NFPA 70, or Canadian Electrical Code, CSA C22.1, if an external electrical source is
utilized.
The ANSI standards are available from the American Gas Association, 1515 Wilson Blvd., Arlington, Virginia 22209.
The NFPA standards are available from the National Fire Protection Association, Batterymarch Park, Quincy, MA. 02269.
Canadian standards are available from International Approval Services,178 Rexdale Blvd.,Etobicoke,Ontario, Canada
M9W 1R3.
NOTE: If optional rear register kit is to be used, see supplemental installation instructions (No. 84504) and section marked “Special
Instructions for Rear Register Kit Application” prior to installation of Rough-In.
INTRODUCTION
THIS IS A GAS-FIRED, GRAVITY VENTED WALL FURNACE THAT WILL OPERATE SAFELY AND PROVIDE AN EFFICIENT
SOURCE OF HEAT WHEN INSTALLED, OPERATED AND MAINTAINED AS RECOMMENDED IN THESE INSTALLATION AND
OPERATING INSTRUCTIONS. READ THESE INSTRUCTIONS THOROUGHLY BEFORE INSTALLING, SERVICING, OR USING THE
APPLIANCE. IF YOU DO NOT UNDERSTAND ANY PART OF THESE INSTRUCTIONS, CONSULT LOCAL AUTHORITIES,
OTHER QUALIFIED INSTALLERS, SERVICE TECHNICIAN, THE GAS SUPPLIER OR THE MANUFACTURER.
SPECIFICATIONS
Your vented wall furnace comes packed in a single carton. (For wall thermostat models that includes the thermostat, thermostat wire,
and insulated staples). Before installing the wall furnace check the rating plate to verify that the Model Number is correct and that the
wall furnace is equipped for the type gas you intend to use.
CONTENTS
Page 2
Introduction................................................
2
Lighting Instructions................................................... 11
Specifications..............................................
2
Pilot Adjustment........................................................... 12
Safety Rules.................................................
3
Burner Flame Adjustment............................................ 12
Clearances....................................................
3
Maintenance Instructions........................................... 12
Controls........................................................
3
BBSK Kit Instructions...................................................13-15
Combustion & Ventilation Air...................
4, 5
WFF81 Fan Instructions.............................................. 16-17
Venting.........................................................
6, 7
40542 Rear Register Kit Instrucitons.......................... 18-19
Rough-In Instructions................................
7
Trouble Shooting Chart................................................ 20-21
Installation....................................................
9
Parts Drawing................................................................
22
Wiring Instructions......................................
10
Parts List........................................................................
23
Warranty........................................................................
25
The State of Massachusetts requires that installation and service of a gas appliance be performed by
a plumber or gas fitter licensed in the Commonwealth of Massachusetts.
Model
Type
Type
BTU/Hr. Vent
Gas
Shpg.
REAR REG. KIT
FAN KIT
No.
Control
Gas
Input
Size
Inlet
FINISHED DIMENSIONS
W t .
Model
Weight
Model
W t .
SINGLE WALL FURNACE
W255F Wall Stat
Nat.
25,000
4 ”
1/2”
16-1/2”Wx68”Hx6-1/2”D
90 Lbs.
40542
5 Lbs. WFF81 10 lbs.
W256F Wall Stat
L.P.
25,000
4 ”
1/2”
16-1/2”Wx68”Hx6-1/2”D
90 Lbs.
40542
5 Lbs. WFF81 10 lbs.
W355F Wall Stat
Nat.
35,000
4 ”
1/2”
16-1/2”Wx68”Hx6-1/2”D
90 Lbs.
40542
5 Lbs. WFF81 10 lbs.
W356F Wall Stat
L.P.
35,000
4 ”
1/2”
16-1/2”Wx68”Hx6-1/2”D
90 Lbs.
40542
5 Lbs. WFF81 10 lbs.
DUAL WALL FURNACE
W505F Wall Stat
Nat.
50,000
4 ”
1/2”
16-1/2”Wx68”Hx6-1/2”D
134 Lbs. N/A
N/A
WFF81 10 lbs.
W506F Wall Stat
L.P.
50,000
4 ”
1/2”
16-1/2”Wx68”Hx6-1/2”D
134 Lbs. N/A
N/A
WFF81 10 lbs.
