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Williams 4003532 Owner's Operation And Installation Manual

Window wall furnace direct vent natural gas heater 25,000 and 40,000 btu/hr furnaces
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WINDOW WALL FURNACE
DIRECT VENT NATURAL GAS HEATER
OWNER'S OPERATION AND INSTALLATION MANUAL
25,000 and 40,000 Btu/Hr Furnaces
Model Numbers 2503532 and 4003532
WARNING:
If the information
in this manual
is not followed
exactly,
a fire or
explosion
may result causing
property
damage,
personal
injury, or oss of life.
Do not store
or use gasoline
or other flammable
vapors
and liquids
in the
vicinity
of this or any other appliance.
WHAT TO DO IF YOU SMELL
GAS
• Do not try to light any appliance.
• Do not touch any electrical
switch; do not use any phone in your building.
• Extinguish
any open flame.
• Immediately
call your gas supplier from a neighbor's
phone. Follow the gas
supplier's
instructions.
• If you cannot
reach your gas supplier,
call the fire department.
Installation
and service
must be performed
by a qualified
installer,
service
agency,
or the gas supplier.
WARNING:
Improper
installation,
adjustment,
alteration,
service,
or mainte-
nance can cause
injury
or property
damage.
Refer to this manual
for correct
installation
and operational
procedures.
For assistance
or additional
information
consult
a qualified
installer,
service agency,
or the gas supplier.

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  • Page 1 WINDOW WALL FURNACE DIRECT VENT NATURAL GAS HEATER OWNER'S OPERATION AND INSTALLATION MANUAL 25,000 and 40,000 Btu/Hr Furnaces Model Numbers 2503532 and 4003532 WARNING: If the information in this manual is not followed exactly, a fire or explosion may result causing...

  • Page 2: Table Of Contents

    SECTION PAGE 1 CONTENTS S_etyInforma_on ....................Local Codes ......................Unpacking..............Product_ ............... Specifications ....................... Installing Furnace ....................C-_k aas Xype..................... Installation Items .................... I.,ocating Furnace .................... Creating Wall Opening and Mounting Furnace ..........Installing Thermostat ..................Connecting to Gas Supply ................Checking Gas Connections ................

  • Page 3: S_Etyinforma_On

    SAFETY WARNINGS INFORMATION IMPORTANT: Read this owner's manual carefully and completely before trying to assemble, operate, or service this furnace. Improper use of this furnace can cause serious injury or death from burns, fire, explosion, electrical shock, and carbon monoxide poisoning.

  • Page 4: Local Codes

    SAFETY AWARNINGS Continued INFORMATION 8. Provide the following minimum furnace clearances from furnace cabinet (por- Continued tion of cabinet extending into outside air, as viewed from the rear of furnace): Cabinet Back: 36 inches Cabinet Sides: 6 inches Cabinet Bottom: Must be high enough off the groundto prevent snow, water, leaves, or any other objects from blocking cabinet vents.

  • Page 5: Unpacking

    LOCAL CODES When installing furnace in a manufactured home (mobile home), follow the Manu- factured Home Construction and Safety Standard, Title 24CFR, Part 3280 (for- Continued merly the Federal Standard for Mobile Home Construction and Safety, Title 24, part 280; 1975). When such a standard is not applicable, follow the Standard for Manufactured Home Installations, 1982 (Manufactured Home Sites, Communities...

  • Page 6: Installing Furnace

    INSTALLING Mounting hardware needed to mount furnace into wall is included with the famece. No venting material is needed. You must famish tools and all gas piping from the FURNACE gas source to the furnace inlet. AWARNING A qualified service person must install furnace. Have service person inspect furnace...
  • Page 7 INSTALLING AWARNING FURNACE Never install the furnace • in an inside wall (Continued) • in a recreation vehicle • in a window recessed in a thick wall (creating an alcove) • in an alcove • behind a door or where an open door would block normal air flow •...

  • Page 8: Creating Wall Opening And Mounting Furnace

    INSTALLING CREATING WALL OPENING AND MOUNTING FURNACE FURNACE Remove furnace front cover. Remove the two screws at the lower edges of front cover. Lift front cover away. (Continued) Installing in Normal Frame Wall The 25,000 Btu/Hr model is designed to fit between two wall studs set at 16 inch on center.

  • Page 9: Installing Thermostat

    INSTALLING Installing in Masonry Wall You can mount both models in a masonry wall. Follow the steps below to install. FURNACE 1. Cut opening in wall. Make opening 14 1/4" wide by 13 5Is" high for 25,000 (Continued) Btu/Hr models. Make opening 20 5h6" wide by 14 3/8" high for 40,000 Btu/Hr models.
  • Page 10 INSTALLING 6. Attach thermostat to thermostat mounting plate with screws provided (see Figure 4). IMPORTANT." Note mounting plate position in Figure 4. Correctly FURNACE position mounting plate for your model furnace. (Continued) 40,000 Btu/Hr Models 25,000 Bt_u_'lr Models Figure 4 - Attaching Thermostat to Thermostat Mounting Plate 7.
  • Page 11 INSTALLING Locating Thermostat on Wall I. Locate thermostat 4 Ih to 5 feet above the floor on an inside wall away from FURNACE any heat sources. The thermostat needs to sense average room temperature. (Continued) Avoid the following: COLD SPOTS HOT SPOTS Concealed pipes or ducts...
  • Page 12 INSTALLING Mountina the Thermostat to Wall 1. Connect thermostat wLmsto the two terminal screws on back of thermostat (see FURNACE Figure 6). Connect red wire to "R" terminal. Connect white wire to "W" termi- nal. (Continued) 2. Push any excess wire back through hole in wall and plug hole with insulation prevent drafts.

  • Page 13: Connecting To Gas Supply

    INSTALLING CONNECTING TO GAS SUPPLY FURNACE (Continued) A qualified service person must connect furnace to gas supply. AWARNING Follow all local codes. AWARNING Never connect furnace to private (non-utility) gas wells. This gas is commonly known as well-head gas. WARNING Unplug furnace before connecting...
  • Page 14 INSTALLING Connecting Fumace to Gas Supply at Rear of Furnace 1. Remove the two screws in back of furnace cabinet located by the exhaust FURNACE vent(s) (see Figures 9 and 10). (Continued) Figure 9 - Locations of Screws in Figure 10 - Locations of Screws in Back of Furnace Cabinet Back of Furnace Cabinet (25,000 Btu/Hr Model)
  • Page 15 INSTALLING 8. Locate knockout plug in furnace cabinet. Knockout plug is in lower left rear of furnace cabinet (as viewed from rear, see Figure 13). Remove knockout plug. FURNACE (Continued) Knockout Plug Figure 13 - Location of Knockout Plug 9. Slide furnace back into furnace cabinet. Make sure exhaust tube gaskets are in place.
  • Page 16 INSTALLING Providing Gas Piping to Fumace You must provide gas piping from gas source to furnace. The gas piping must be in FURNACE a vertical position where it connects to the furnace. This prevents interference with front cover installation. (Continued) Consult your local gas company for proper routing of the gas lines.
  • Page 17 INSTALLING Installation must include a manual shutoff valve (supplied), ground joint union, plugged I/8" NPT tap, and a sediment trap. Locate NPT tap within reach for test FURNACE gauge hook up. NPT tap must be upstream from furnace (see Figure 15).

  • Page 18: Checking Gas Connections

    CHECKING GAS CONNEC_ONS INSTALLING FURNACE AWARNING (Continued) Test all gas piping and connections for leaks after Installation servicing. Correct aU leaks at once. ,WARNING Never use an open flame to check for a leak. Apply a mixture liquid soap and water to all joints. Bubbles forming show a leak.

  • Page 19: Connecting To Electrical Supply

    INSTALLING CONNECTING TO ELECTRICAL SUPPLY IMPORTANT." Follow all local codes when connecting electricity to furnace. In FURNACE the absence of local codes, refer to the latest edition of the National Electrical Code (Continued) ANSI/NFPA No. 70. If you are not familiar with wiring codes, have a qualified electrician do the wiring.

  • Page 20: Operating Furnace

    OPERATING AWARNING FURNACE Furnace burner, combustion chamber, and exhaust port are very hot during operation. Keep children and adults away from hot surfaces to avoid burns and clothing ignition. Carefully supervise young children when they are in the same room as furnace. Furnace will remain hot for a time after shutdown.

  • Page 21: Operating Instructions

    OPERATING OPERATING INSTRUCTIONS FURNACE (Continued) Always follow lighting Instructions. Never attempt to light burner AWARNING with a match or butane torch. STOP! Read the safety information on page 20. Set the thermostat to lowest setting. Turn off all electric power to the furnace. to OFF position (see Figure 18).

  • Page 22: To Tun_ Offgas To Furnace

    OPERATING TO TURN OFF GAS TO FURNACE FURNACE Set thermostat to lowest setting (Continued) Turn manual gas valve clockwise to OFF position. Do not force manual gas valve. Unplug furnace if service is to be performed. To Shut Down Furnace for an Extended Period of Time Tum manual gas valve clockwise _...

  • Page 23: Normal Operating Sequence

    NORMAL 1. When the room temperature drops below the thermostat setting, the thermostat calls for heat. A 24-volt circuit is completed through the time delay relay coil. OPERATING After three to five seconds, the contacts in the relay close. The blowers come on. SEQUENCE One motor drives both the combustion air blower and the circulating...

  • Page 24: Cleaning And Maintenance

    CLEANING AWARNING Turn off and unplug furnace and let cool before cleaning. Turn MAINTENANCE manual shutoff valve to OFF position. Only a qualified service person should service and repair furnace. AWARNING Keep furnace clear and free from combustible materials, gasoline, and other flammable vapors and liquids.

  • Page 25: Troubleshooting

    TROUBLE- AWARNING SHOOTING Turn off and unplug furnace and let cool before servicing. Unless you need gas supply for testing, shut off manual shutoff valve before servicing. Only a qualified service person should service and repair furnace. COMPLAINT--NO HEAT 1. Thermostat Check to be sure thermostat is calling for heat.
  • Page 26 TROUBLE- • If circuit across contacts okay, check continuity of wiring in motor circuit 8. Short Cycling (motor goes on and off) SHOOTING A. Check thermostat. Contacts should remain closed. If contacts are breaking: (Continued) • Check thermostat anticipator setting. It should be between .75 and 1.0. •...
  • Page 27 TROUBLE- D. Voltage present across the two white wires, check wiring and wire connec- tions to glo bar. SHOOTING E. If wiring and wire connections okay, replace glo bar. (Glo bar broken). 2. Glo bar glows but burner will not come on. (Continued) A.

  • Page 28: Wiring Diagrams

    You may feel your gas pressure is too low or gas quality is bad. If so, contact your local gas supplier. TECHNICAL You may have further questions about installation, operation, or troubleshooting. If so, contact your installer, a qualified service person or Williams Technical Help SERVICE Line at 1-800-266-0993.

  • Page 29: Ordering Replacement Parts

    ORDERING Note: Use only original replacement parts. This will protect your warranty covera I for parts replaced under warranty. REPLACEMENT All parts listed herein may be ordered from your equipment supplier. PARTS When ordering repair parts, always give the following information: •...
  • Page 30 This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Ordering Replacement Parts on page 29 of this PARTS LIST manual. Cabinet Assembly 40,000 Btu/Hr Model 4003532 PART NUMBER DESCRIPTION QTY. 280498 Bottom Shield 121520 Screw, #8 x 3/8"...
  • Page 31 ILLUSTRATED This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Ordering Replacement Parts on page 29 of this PARTS LIST manual. Combustion Chamber Assembly 25,000 Btu/Hr Model 2503532 PART PART NUMBER DESCRIPTION NUMBER DESCRIPTION QTY.
  • Page 32 This list contains replaceable pans used in your furnace. When ordering pa_s, follow the instructions listed under Ordering Replacement Parts on page 29 of this PARTS LIST manual. Combustion Chamber Assembly 21_,_ 40,000 Btu/Hr Model 22-__,_ 4003532 _',,_ 22 20_. PART PART NUMBER DESCRIPTION QTY. NUMBERI DESCRIPTION QTY.
  • Page 33 ILLUSTRATED This list contains replaceable parts used in your furnace. When ordering parts, follow the instructions listed under Ordering Replacement Parts on page 29 of this PARTS LIST manual. Burner Assembly 25,000 Btu/Hr Model 2503532 PART DESCRIPTION QTY. NUMBER Hex Nut, #10-24 120717 121459 Screw, #10-24 x 112"...
  • Page 34 When ordering parts, follow the instructions listed under Ordering Replacement Parts on page 29 of this PARTS LIST manual. Burner Assembly 40,000 Btu/Hr Model 4003532 PART NUMBER DESCRIPTION QTY. 120717 Hex Nut, #10-24 010621 Left Burner Assembly...
  • Page 35 ILLUSTRATED list contains replaceable parts used in your furnace. When ordering parts, Parts on page 29 of this follow the instructions listed under Ordering Replacement PARTS LIST manual. Blower Assembly 25,000 Btu/Hr Model 2503532 --/_ "_ PART PART NUMBER DESCRIPTION QTY.
  • Page 36 Ordering Replacement Parts on page 29 of this 1"/4, M/0 I,,,I O/ manual. Blower Assembly V__ _ 40,000 Btu/Hr Model _--_. "_',_ 4003532 "_'_"-'_'J "29 21 ^F/ '<._"_x/ '° " 12 KEY! PART PART NUMBER DESCRIPTION QTY.
  • Page 39 201842...

  • Page 40: Warranty Information

    INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE TO ONE (1) YEAR FROM THE DATE OF FIRST PURCHASE; AND WILLIAMS FURNACE COMPANY'S LIABILITY IS HEREBY L 13.VI ITED TO THE PURCHASE PRICE OF THE PRODUCT AND SHALL NOT BE LIABLE...

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2503532

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