Williams 400 Series Compact Heating System, Features, Unique, Self-Contained Direct-VentSystem

Compact Heating System

Model Number		Btu/hr Input	Btu/hr Output	Efficiency Percentages		Type	Gas	Shipping Weight
						of
Natural	Propane	Rating	Rating	Thermal	AFUE		Connection	(lbs.)
						Control
2503532	2503531	25,000	19,250	77.0	76.0	24V Wall	⅜"	65
4003532	4003531	40,000	30,800	77.0	76.0	24V Wall	⅜"	98

Features

Unique, Self-Contained Direct-Vent System

With either wall or window installation, the Compact Heating System requires no chimney or flue pipe. The sealed combustion system uses only outside air, and the exhaust gases are discharged directly to the outside.

There's a Model for

Your Space Heating Needs

Furnace dimensions and easy installation allow for placement and operation through most windows and exterior walls. Consult this drawing and chart below for sizes.

Easy Installation

Through-the-Wall or Through-the-Window

The Compact Heating System offers exceptional installation flexibility found in no other direct-vent product. With unique slide-in/slide-out chassis, it moves easily into a window or wall opening with only electrical and gas hookups required. Fuel connection can be made on either the front (interior) or rear (exterior) of the unit, giving you a choice of installation.

Williams compact design incorporates an attractive front grille that extends only 3¼ inches into the room, saving valuable interior space.

The 250 Series Models fit between standard 16" O.C. studs with no structural changes needed. Slide-out chassis design facilitates servicing.

Model	A	B	C	D	E	F
250 Series	16⅛"	15-3/32"	23⅝"	14-1/16"	13-1/16"	3-5/32"
400 Series	21¾"	15-3/32"	23⅝"	20-1/16"	14-3/16"	3-5/32"

How to Select the Right Model

Use the chart shown to determine the appropriate model to provide proper heating capacity for your square footage.

		Amount of Insulation
Model	Well Insulated		Average	Poor
			Insulation	Insulation
250 Series	1,225 sq. ft.		825 sq. ft.	625 sq. ft.
400 Series	2,050 sq. ft.		1,350 sq. ft.	1,000 sq. ft.

Dimensions and Clearances

Cabinet Clearances

All models, top, bottom and sides 0", rear 36".

Grille Clearances

All models, top to ceiling 12", adjacent side wall 12", front 8', floor 6" (2" if noncombustible).

Wall Opening Size

25,000 Btu/hr models: 14¼"W x 13⅝"H 40,000 Btu/hr models: 20-5/16"W x 14 ⅜"H

250 West Laurel Street · Colton, California 92324 USA

(909)825-0993 · Fax: (909) 370-0581 or (909) 824-8009 Consumer Line: (888) 256-6465

Homeowner Assistance: (909) 426-0978 www.e-wfc.com

Important

·Read owner's manual before using/installing.

·Photographs are representative.

·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.

·New York approval MEA117-77-E11.

·Minneapolis certificate of approval number 5787.

·Please read the warranty for any limitations for disclaimers.

·Combustion chamber carries a five-year limited warranty. All other parts carry a one-year limited warranty.

© 2008 Williams Furnace Co. Printed in U.S.A. All Rights Reserved Subject to Change without Notice L1136 5/08