Williams 6005621, 4505621, 4505622, 6005622 User Manual

Floor

Very quietly heat large

areas with this easily-

installed, space and

energy-saving furnace!

Williams’ floor furnaces use no above­the-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 Furnace

Furnace

Floor furnaces are designed to give you
maximum efficiency, low-fuel
consumption and quiet operation.

These models offer affordable
solutions for limited-space floor
plans, remodels, remote cabin
locations and new construction.

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)

 Automatic temperature and safety controls
 Resettable vent-limit safety switch

Floor Furnace

Model Number

PropaneNatural

4505622
6005622

4505621
6005621

Easy Installation

NOTE: If two joists
are cut, use a
double header

Headers

Btu/hr

Input

Btu/hr

Output

Efficiency Percentages

Thermal AFUE Length Height Width Length

45,000 31,500 70.0 57.0 32" 28½" 24¼" 32⅜" 147
60,000 42,000 70.0 58.0 42" 28½" 24¼" 42⅜" 174

Width

24"
24"

Dimensions

Floor Opening

Shipping

Weight (lbs.)

All units have ½" gas connection.

Features

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.

Floor
Joist

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

Temperature Control

A self-generating millivolt electrical system powers a wall­mounted heating thermostat. This provides maximum room
comfort while allowing economical automatic operation.

Furnace

JOIST HEADERS

DEPTH OF

FURNACE

18" MINIMUM ON

CONTROL END OF FURNACE

VENTILATION
OPENING

FIRST FLOOR

4" VENT PIPE

(¼" RISE PER FOOT)

GROUND LEVEL

DRAIN FROM

FURNACE PIT

12"

12" MINIMUM

12" MINIMUM ON ALL SIDES
EXCEPT CONTROL END OF FURNACE

All units have 4" flue pipe diameter and 18" floor-to-center of flue connection.

Recommended Minimum Clearances

12" between the floor furnace and doors, draperies or other combustible materials

6" between the floor furnace and adjacent walls

15" walk space along two sides of the furnace

250 West Laurel Street · Colton, California 92324 USA
[phone] · Fax: [phone] or [phone]
Consumer Line: [phone]
Homeowner Assistance: [phone]
www.e-wfc.com

Accessories

High-Altitude Units

Conversion Kits

Requires

No Electricity

Great During

Power Outages

18" MINIMUM
WORK SPACE

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.

· Venting must comply with the "Venting and Chimney Requirements" section of the

...installation manual.

· 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.

© 2008 Williams Furnace Co. Printed in U.S.A. All Rights Reserved Subject to Change without Notice L1026 5/08