COZY 90N302B Owner's Manual

COZY 90N302B Owner's Manual

Gas fired vented floor furnace

Advertisement

OWNER'S MANUAL
INSTALLATION INSTRUCTIONS
GAS FIRED VENTED
FLOOR FURNACE
NATURAL GAS
90N302B 90N502B 90N622B
MILLIVOLT CONTROL SYSTEM
Not Approved for Installation in Canada
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.
WARNING: Installation and repair must be done
by a qualified service person. The appliance should
be inspected before use and at least annually by a
professional service person.
- The coating selected to provide longer life to the
heat exchanger may smoke slightly upon initial firing.
Please provide adequate ventilation if this occurs.
- Installation, maintenance, service, troubleshooting
& repairs must be performed by a qualified service
agency. DO NOT attempt any of these procedures
if you are not qualified as this could expose you to
property damage, personal injury, or loss of life and
will invalidate all warranties.
- This unit is for residential use only and is not approved
for installation in mobile homes, greenhouses, or
environments involving dusty, wet, corrosive, or
explosive conditions. Such conditions will invalidate
the warranty and may create unsafe conditions.
WARNING: Operation of this furnace when not
connected to a properly installed and maintained
venting system can result in Carbon Monoxide (C.O.)
poisoning and possible death. For your safety, this
furnace and the venting system should be inspected
at least annually by a qualified service technician.
250 West Laurel Street, Colton CA 92324 • www.cozyheaters.com • 1-888-444-1212
VISITE NUESTRA PÁGINA WEB PARA LA VERSIÓN EN ESPAÑOL DE ESTE MANUAL
https://www.cozyheaters.com/products
WARNING: If the information in these
instructions is not followed exactly, a fire or explosion
may result causing property damage, personal injury
or loss 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 or cell phone in your building.
• Immediately call your gas supplier from a neighbor's
phone. Follow the gas supplier's instructions.
• If you cannot reach the gas supplier, call the fire
department.
– Installation and service must be performed by a
qualified installer, service agency or the gas supplier.
WARNING: This product can expose you to
chemicals including epichlorohydrin which is known to
the State of California to cause cancer and birth
defects and/or other reproductive harm. For information
go to www.p65warnings.ca.gov

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the 90N302B and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Summary of Contents for COZY 90N302B

  • Page 1 INSTALLATION INSTRUCTIONS https://www.cozyheaters.com/products GAS FIRED VENTED FLOOR FURNACE NATURAL GAS 90N302B 90N502B 90N622B MILLIVOLT CONTROL SYSTEM Not Approved for Installation in Canada INSTALLER: Leave this manual with the appliance. CONSUMER: Retain this manual for future reference. WARNING: Installation and repair must be done WARNING: If the information in these by a qualified service person.
  • Page 2: Table Of Contents

    City and State Dealer Address City and State HVAC Installation Date HVAC Installer Name HVAC Signature (Dealer or authorized representative who certifies that this appliance is installed in accordance with manufacturer’s instructions and local codes.) COZY GAS FIRED VENTED FLOOR FURNACES...
  • Page 3: Warranty

    REMEDIES SET FORTH HEREIN ARE THE RIGHTS AND YOU MAY ALSO HAVE OTHER RIGHTS EXCLUSIVE REMEDIES AVAILABLE TO THE USER WHICH VARY FROM STATE TO STATE. TO REGISTER YOUR FURNACE : GO ONLINE TO THE COZY HEATERS WEBSITE AT: https://www.williamscomfort.com/register-your-furnace-product/...
  • Page 4: Read Carefully Before Installing Unit

    fireplace dampers and any other bathroom exhausts, so they are operating at gas-fired burning appliance to their previous maximum speed. Do not operate a summer conditions of use. exhaust fan. COZY GAS FIRED VENTED FLOOR FURNACES...
  • Page 5: Installation In The State Of Massachusetts

    floor furnace. Check the model numbers on the two cartons to be sure they match. MODEL NUMBERS 90N302B 90N502B 90N622B GAS TYPE...
  • Page 6: Introduction

    floor furnace is installed and before it is put or servicing the floor furnace. into service. 14. Never operate the floor furnace without the sight glass assembly in place, or with the glass broken or missing. COZY GAS FIRED VENTED FLOOR FURNACES...
  • Page 7: Floor Furnace Location

    FLOOR FURNACE LOCATION Choose a central location such as a hallway but where FIGURE 1 occupant traffic is minimal & where there is at least 18 inches of room from two adjoining sides of the grill to the nearest wall so that occupants may pass without stepping Bedroom Bath Kitchen...
  • Page 8: Cutting The Floor Opening

    If a drain cannot be existing vent that has worked for years may not be adequate for todays design because of higher efficiency requirements that result in lower stack temperatures. COZY GAS FIRED VENTED FLOOR FURNACES...
  • Page 9 FIGURE 6A Class “B” double wall pipe is acceptable to most codes, and if installed in accordance with the pipe manufacturers instructions provides the safest and most efficient vent system. Class “B” pipe has an integral lock for securing furnace casing sections together.
  • Page 10: Connecting The Vent

    CHIMNEY OR 5. Pipe supported with metal straps. METAL PIPE: 6. Adequate height of vent system. 3’ MIN. 7. Listed vent cap. 10’ OR LESS 2’ MIN. CHIMNEY OR RIDGE METAL PIPE: 3’ MIN. COZY GAS FIRED VENTED FLOOR FURNACES...
  • Page 11: Gas Supply And Piping

    GAS SUPPLY AND PIPING The gas piping system must meet the requirements of local • Where local conditions include earthquake, tornado, codes or the specifications of the servicing gas supplier. It unstable ground or flood hazards, give special must have adequate capacity to supply the floor furnace consideration to increased strength and flexibility and any other appliance within the home with enough of piping supports and connections.
  • Page 12 Release the knob and tum it to the off position. Reconnect the pilot supply tubing and check for leaks with soap and water or liquid detergent. COZY GAS FIRED VENTED FLOOR FURNACES...
  • Page 13: Thermostat Installation

    THERMOSTAT INSTALLATION WIRE AS INDICATED: Figure 12 THERMOSTAT KIT 8968 SOLD SEPARATELY STEP 1 Connect black limit switch wire to black Follow the instructions included with the thermostat. thermostat wire using wire nut. (Nut not Locate the thermostat approximately five feet above the furnished).
  • Page 14: Lighting Instructions

    Set the thermostat to it’s lowest setting. Place furnace key on control rod, push slightly and Allow floor grille to cool, then remove. tum clockwise to “ALL OFF.” Do not force. Replace floor grille. COZY GAS FIRED VENTED FLOOR FURNACES...
  • Page 15: Adjusting The Burner

    HIGH ALTITUDE KITS AND ORIFICE SIZING 2,001 - 4,001 - 6,001 - MODEL NO. 0 - 2,000’ KIT NO. YELLOW 4,000 6,000 8,000 90N302B .057” M118745 Converted to Propane M118742 90N302B 90N502B .83” M118746 FIGURE 16 Converted to Propane .131”...
  • Page 16 FIGURE 17-A IN MILD WEATHER, OPERATE FURNACE WITH DAMPER OPEN. Furnace will cycle on and off maintaining a moderate grill temperature and an even room temperature. COZY GAS FIRED VENTED FLOOR FURNACES...
  • Page 17: Maintenance

    MAINTENANCE CAUTION: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and WARNING: DO NOT USE ANY KIND OF dangerous operation. SOLVENT OR CLEANING FLUID TO CLEAN YOUR FLOOR FURNACE. IT MAY LEAVE A RESIDUE OR For proper operation, Floor Furnace must be kept clean.
  • Page 18: Gas Floor Furnace Parts List

    COZY GAS FLOOR FURNACE PARTS LIST Ref. No. Replacement Part Description 90N302B 90N502B 90N622B Draft hood (with gasket) 23200 K 24075 K 24477 K Casing M118750 M118759 M118763 Liner M118721 M118728 M118732 Heat exchanger (with gasket) M118756 M118757 M118758 Top grille...
  • Page 19: Floor Furnace Exploded View

    ATTENTION: Contractors and qualif ied service technicians: We only sell parts through our wholesalers. For prompt parts service, contact the wholesaler f rom which you purchased your Cozy heater. NOTE: Parts & schematic drawings on current models are shown at: cozyheaters.com | Specifications subject to change without notice.
  • Page 20: Troubleshooting Your Furnace

    1. Defective or sticking automatic valve. 2. Excessive gas pressure 2. To connect this situation contact the utility supplying the gas. (The supply gas pressure must not exceed 1/2 psi or 14” water column). COZY GAS FIRED VENTED FLOOR FURNACES...
  • Page 21 ISSUE POSSIBLE CAUSE(S) CORRECTIVE ACTION Incorrect Gas Input 1. Gas input not checked. 1. Recheck gas input. 2. Clogged orifice. 2. Check orifice for clogging. If clogged, clean out the hole carefully with a smooth wood toothpick. (DO NOT in any way enlarge or distort it).
  • Page 22: Service Record

    SERVICE RECORD DATE MAINTENANCE PERFORMED COMPONENTS REQUIRED...
  • Page 23: Notes

    NOTES...
  • Page 24 | 888-444-1212 | 250 West Laurel Street, Colton CA 92324 USA Subject to change without notice | © 2024 COZY GAS FIRED VENTED FLOOR FURNACES P323950_B 08/24...

This manual is also suitable for:

90n502b90n622b

Table of Contents