Floor
Furnace
Floor Furnace
Very quietly heat large
areas with this easily-
installed, space and
energy-saving furnace!
Williams’ floor furnaces use no above-
the-floor room space as it unobtrusively
and efficiently circulates warm air . . . and
does it without the aid of a blower.
Our models are fitted with an automatic
floor-register grille temperature control
and nonelectric pilot to ensure
continuous heat – even during power
outages.
Floor furnaces are designed to give you
maximum efficiency, low-fuel
consumption and quiet operation.
45,000 and 60,000
Design Features
‰ No electricity required
‰ “Matchless” pilot igniter
‰ Easy installation
‰ Combustion chamber lifts out for easy servicing
‰ Long-life and quiet heavy-duty burner
‰ Wall-mounted thermostat included
‰ Natural and propane gas models
(Conversion kit available)
These models offer affordable
solutions for limited-space floor
plans, remodels, remote cabin
locations and new construction.
‰ Automatic temperature and safety controls
‰ Resettable vent-limit safety switch
Floor Furnace
Efficiency Percentages
Model Number
Dimensions
Floor Opening
Btu/hr
Input
Btu/hr
Shipping
Output
Weight (lbs.)
Natural
Propane
Width
Thermal
AFUE
Length
Height
Width
Length
4505622
6005622
4505621
6005621
24"
24"
45,000
60,000
31,500
42,000
70.0
70.0
57.0
58.0
32"
42"
28½"
28½"
24¼"
24¼"
32⅜"
42⅜"
147
174
All units have ½" gas connection.
Easy Installation
Features
NOTE: If two joists
are cut, use a
Floor Register Temperature Control
Williams' floor furnaces are equipped with automatic floor
register grille temperature control. This meets the latest
American National Standards Institute Requirements. In
extreme weather conditions, this control can be overridden to
allow increased heat output.
double header
Floor
Headers
Floor
Joist
Temperature Control
A self-generating millivolt electrical system powers a wall-
mounted heating thermostat. This provides maximum room
comfort while allowing economical automatic operation.
This space must be the same
size as the opening cut in the
floor
NOTE: The headers must not
be a smaller size lumber than
the joists
Furnace
Accessories
High-Altitude Units
Conversion Kits
Requires
FIRST FLOOR
JOIST HEADERS
No Electricity
Great During
4" VENT PIPE
(¼" RISE PER FOOT)
Power Outages
DEPTH OF
FURNACE
18" MINIMUM
WORK SPACE
VENTILATION
OPENING
12"
GROUND LEVEL
12" MINIMUM
18" MINIMUM ON
CONTROL END OF FURNACE
12" MINIMUM ON ALL SIDES
EXCEPT CONTROL END OF FURNACE
DRAIN FROM
FURNACE PIT
All units have 4" flue pipe diameter and 18" floor-to-center of flue connection.
Important
· Read owner's manual before using/installing.
· Photographs are representative only.
· Specify propane or natural gas when ordering.
· Check local codes and ordinances for permitted uses.
· Consult installation manual for clearances prior to installation.
· We reserve the right to amend product specifications without notice.
· Installation and servicing recommended by a qualified service person.
· Please read the warranty, for any limitations or disclaimers. Combustion
chamber carries a ten-year limited warranty. All other parts carry a one-year
li.llimited warranty.
Recommended Minimum Clearances
6" between the floor furnace and adjacent walls
12" between the floor furnace and doors, draperies or other combustible materials
15" walk space along two sides of the furnace
· Venting must comply with the "Venting and Chimney Requirements" section of the
...installation manual.
250 West Laurel Street · Colton, California 92324 USA
(909) 825-0993 · Fax: (909) 370-0581 or (909) 824-8009
Consumer Line: (888) 256-6465
· Replacement floor furnaces of the same or lesser Btu/hr input rating may
be installed in the same location as the replaced furnace when
replacement does not create an unsafe condition.
Homeowner Assistance: (909) 426-0978
© 2008 Williams Furnace Co.
Printed in U.S.A.
All Rights Reserved
Subject to Change without Notice
L1026 5/08
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