What to do if YOU Smell GAS
Models GWN20TA, GWP20TA, GWN30TA, GWP30TA, WMN20a, WMP20a
Table of Contents
Safety Information
Safety Information
Local Codes
Safety Information
Product Features
Unpacking
Unusually Tight Construction
Air For Combustion Ventilation
Providing Adequate Ventilation
Confined and Unconfined Space
Determining if You Have a Confined or Unconfined Space
AIR for Combustion Ventilation
Determining FRESH-AIR Flow for Heater Location
Check GAS Type
Installation
Ventilation AIR
Ventilation Air From Inside Building
Locating Heater
Installation
Installation Items
This heater is designed to be mounted on a wall
Installing Heater to Wall
Attaching To Wall Stud Method
30,000 Btu/Hr Models
20,000 Btu/Hr Models
Attaching To Wall Anchor Method
Heater Wall
Installing Bottom Mounting Screws
Mounting heater to floor With optional floor kit
Mounting Base Feet to Heater
Connecting to GAS Supply
Typical Inlet Pipe Diameters
Checking GAS Connections
Test Pressures Equal To or Less Than 1/2 Psig 3.5 kPa
Pressure Testing Heater Gas Connections
Correct all leaks at once
Lighting Instructions
For Your Safety Read Before Lighting
Operating Heater
Do not try to light any appliance
To Turn OFF GAS To Appliance
Manual Lighting Procedure
Operating Heater
Thermostat Control Operation
Burner Flame Pattern
Inspecting Heater
Pilot Flame Pattern
Burner Pilot Air Inlet
Cleaning Maintenance
ODS/PILOT and Burner
Cabinet
Troubleshooting
Observed Problem Possible Cause Remedy
Troubleshooting
Blocked
Observe minimum installa
Slight smoke or odor during
Burner orifice
Gas leak. See Warning
Statement above
Replacement Parts
Specifications
Service Hints
Technical Service
Illustrated Parts Breakdown
Models WMN20A, WMP20A, GWN20TA, GWP20TA, GWN30TA and GWP30TA
Parts List
NJF 8C
Base Kit GA4550
Accessories
Equipment Shutoff Valve GA5010
Electronic ignitor Kit GA435 Not Shown
Parts Centrals
Model Serial No Date of Purchase
Warranty Information
Keep this Warranty
Industrial Drive P.O. Box 119344-01 Rev. B