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COZY W355G - User Manual

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1018039-BPage 1
PILOT PRO MANUAL
Installation and Operating Instructions
NATURAL GAS - W255G, W355G, W505G, W255G-3, W355G-3, W505G-3,
W255G-5, W355G-5, W505G-5, W255G-7, W355G-7, W505G-7
— Donotstoreorusegasolineorotherammable
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.
•Immediatelycallyourgassupplierfromaneighbors
phone.Followthegassuppliersinstructions.
•Ifyoucannotreachyourgassupplier,callthere
department.
— Installationandservicemustbeperformedbya
qualiedinstaller,serviceagencyorthegassupplier.
!
WARNING:Iftheinformationintheseinstructionsis
notfollowedexactly,areorexplosionmayresultcausing
propertydamage,personalinjuryorlossoflife.
Cozy Heating Systems, LLC | cozyheaters.com | 855-589-5380 | 3230 Industrial Pkwy | Jeffersonville, IN 47130
WARNING: Operation of any furnace without the properly installed, factory furnished vent system & vent cap could result in
Carbon Monoxide (C.O.) poisoning and possible death. For your safety, this furnace & the vent system should be inspected at least
annually by a qualified service technician.
THE CONTENTS ON THIS MANUAL ARE IN STRICT ACCORDANCE WITH
ANSI STANDARD Z21.71 AND SHOULD BE FOLLOWED BY A PROFESSIONAL INSTALLER ONLY.
INSTALLER:Leavethismanualwiththeappliance.
CONSUMER:Retainthismanualforfuturereference.

Questions and Answers

  • J
    Jessica AndrewsAug 18, 2025
    How to fix delayed ignition on a COZY Gas Heater?
    • E
      Earl GlennAug 19, 2025
      If your COZY Gas Heater experiences delayed ignition, it could be due to a defective pilot assembly. Inspect the pilot assembly for loose or broken components or wires, and replace them if necessary. Another possible cause is a low battery. Try replacing the batteries to resolve the issue.
  • A
    Andrew ElliottAug 28, 2025
    Why won't my COZY Gas Heater burner turn off?
    • J
      Jesse HubbardAug 28, 2025
      If your COZY Gas Heater burner won’t turn off, it is likely due to a defective control module. The suggested solution is to replace the control module.
  • S
    samuelrichNov 8, 2025
    What to do if my COZY Gas Heater fails to ignite?
    • C
      Carlos RobinsonNov 8, 2025
      If your COZY Gas Heater fails to ignite, several factors could be at play. It might be due to a defective pilot assembly; in this case, you should inspect the pilot assembly for loose or broken components or wires and replace them as needed. A low battery can also cause this issue, so try replacing the batteries. If you're using an optional "AC" adapter, ensure it's properly connected to both the wall outlet and the control module, and replace it if it's defective. Another potential cause is a defective control module, which would also need replacement. Additionally, check if the manual reset blocked flue switch has tripped and reset it. In some cases, the tubing may not have enough gas to light the pilot, so refilling the line with gas might be necessary, noting that initial startup may t...

Summary

Parts List and Reference

Tools Required for Assembly

Lists tools needed for the installation process.

Pilot Pro Installation

Safety Inspection Procedure (Exhibit A)

Recommended safety inspection procedure for existing appliance installations.

Procedure for Installing Automatic Intermittent Pilot Systems (Exhibit B)

Procedure for installing automatic intermittent pilot systems on existing appliances.

Pilot Pro Electrical Connection

Applying Schematics and Modification Sticker

Apply ladder schematic, wiring diagram, and modification sticker inside the heater.

Wire Routing for Right-Side Installation

Route and secure wires for right-side Pilot Pro installation.

Wire Routing for Left-Side Installation

Route and secure wires for left-side Pilot Pro installation.

Starting Pilot Pro System

Ignitor Spark Check and Operational Cycles

Verify ignitor sparks correctly and run operational cycles for proper system function.

Replacing Lighting Instructions

Remove old instructions and replace with PilotPro lighting instructions.

Carbon Monoxide Poisoning Hazard and Venting Procedures

Follow steps to prevent CO poisoning and ensure proper venting during operation.

Lighting and Operating Instructions

Turning Off Gas to Appliance

Procedures for safely turning off gas supply to the appliance.

Operating Instructions Steps

Step-by-step guide for operating the Pilot Pro system.

Troubleshooting Main Burner Issues

Burner Flame Adjustment

Limited Warranty Information

COZY W355G Specifications

General IconGeneral
BrandCOZY
ModelW355G
CategoryWall Furnaces
LanguageEnglish

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