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Procom ML250TPA User Manual

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VENT-FREE PROPANE/LP
GAS SPACE HEATER
OWNER’S OPERATION AND
INSTALLATION MANUAL
INFRARED MODELS
ML150HPA, ML150TPA
ML250HPA, ML250TPA
Questions, problems, missing parts? Before returning to your retailer, call
our customer service department at 1-866-573-0674, 8:00 am - 4:30 pm CST,
Monday through Friday or email customerservice@usaprocom.com
WARNING: If the information in this manual is not
followed exactly, a re or explosion may result causing
property damage, personal injury or loss of life.
Do not store or use gasoline or other ammable va-
pors 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.
INSTALLER: Leave this manual with the appliance.
CONSUMER: Retain this manual for future reference.

Questions and Answers:

Procom ML250TPA Specifications

General IconGeneral
BrandProcom
ModelML250TPA
CategoryGas Heater
LanguageEnglish

Summary

Heater Manual Introduction

Critical Safety Warnings

Essential warnings about fire, explosion, and injury risks if manual instructions are not followed.

Gas Leak Emergency Procedure

Steps to take if a gas leak is detected, emphasizing immediate action and contacting authorities.

Heater Overview and Usage

Unvented Heater Operation

Explains the heater uses room air and requires adequate ventilation for combustion.

Fuel Type Compatibility

Specifies the heater is for propane or natural gas and cannot be field converted.

General Safety Information

Carbon Monoxide Poisoning Risks

Details the severe risks and symptoms of carbon monoxide poisoning from heater malfunction.

Propane Gas Safety Precautions

Highlights that propane gas is odorless and the importance of leak detection.

Operational Safety Rules

Qualified Installer Requirements

Stresses that installation and service must be performed by a qualified agency according to codes.

Heater Specifications and Features

Key Product Features

Describes Safety Pilot, Piezo Ignition, and Thermostatic Control for improved operation.

Pre-Installation Procedures

Local Code Compliance

Advises adherence to local codes and the National Fuel Gas Code for installation.

Unpacking and Inspection

Steps for unpacking the heater and checking for any shipping damage before installation.

Airflow and Ventilation Requirements

Water Vapor Management

Guidance on handling water vapor produced by the heater to prevent issues.

Adequate Ventilation for Combustion

Explains the need for fresh air for fuel-burning appliances and defines ventilation classifications.

Determining Space Airflow Needs

Confined vs. Unconfined Space Definition

Provides definitions and a worksheet to classify installation spaces based on volume and heat input.

Ventilation Air Strategies

Ventilating from Adjoining Spaces

Methods for providing ventilation air from adjacent rooms via openings or door removal.

Direct Outdoor Ventilation

Techniques for bringing fresh air directly from the outdoors using ducts or grills.

Installation Site Selection

Safe Installation Locations

Specifies prohibited locations and critical clearance requirements to prevent hazards.

Heater Mounting Preparations

Bracket Installation Methods

Guides on preparing the heater and wall for mounting, including bracket attachment.

Attaching the Mounting Bracket

Securing Bracket to Wall Studs

Detailed instructions for firmly attaching the mounting bracket using wall studs.

Using Wall Anchors for Mounting

Procedures for installing the mounting bracket using wall anchors on different wall types.

Final Heater Mounting

Installing Bottom Support Bracket

Steps for securing the heater's bottom mounting bracket for stability.

Gas Supply Connection Essentials

Gas Supply Plumbing Details

Required Gas Connection Parts

Lists necessary components like regulators, shutoff valves, and sealant for safe gas hookup.

Diagrams for Gas Setup

Illustrates correct external regulator installation and gas connection configurations.

Gas System Integrity Checks

Leak Detection Procedures

Safe methods for testing gas piping and connections for leaks using detection fluid.

Pressure Testing Guidelines

Steps to verify gas supply piping and heater connection pressures are within limits.

Heater Operation and Lighting

Pre-Lighting Safety Checks

Crucial safety steps before lighting, including smelling for gas and proper knob operation.

Manual Control Lighting Steps

A step-by-step guide for lighting the pilot and main burner on manual control models.

Ignition Sequence Guidance

Thermostat Model Ignition

Specific instructions for igniting thermostat-controlled models, including pilot holding times.

Heater Control and Shutdown

Turning Off the Heater

Procedures for safely shutting down the heater or its burner, noting pilot status.

Manual Pilot Lighting Procedure

Alternative method for lighting the pilot using a match if the ignitor fails.

Inspecting Heater Performance

Pilot Flame Pattern Analysis

How to identify correct vs. incorrect pilot flames and their impact on operation.

Burner Flame Pattern Analysis

Guidance on assessing burner flames for issues like yellow tipping and proper height.

Routine Care and Maintenance

Cleaning Air Passages and Pilot

Instructions for cleaning the pilot air inlet and burner assembly to prevent soot and ensure performance.

Cabinet and Exterior Cleaning

Methods for cleaning the heater's outer surfaces to remove dust and grime.

Troubleshooting Common Issues

Ignitor Spark and Ignition Failure

Addresses problems related to the ignitor producing no spark or failing to ignite the pilot.

Troubleshooting Pilot and Burner Problems

Pilot Light Stability Issues

Solutions for when the pilot light goes out after the control knob is released.

Burner Ignition Delays and Backfiring

Troubleshooting steps for delayed burner ignition and backfiring during combustion.

Troubleshooting Odors, Smoke, and Moisture

Resolving Gas Odors and Smoke

Identifies causes and solutions for gas odors, smoke, and other smells during operation.

Managing Condensation Issues

Addresses condensation on windows, linking it to ventilation and combustion air requirements.

Parts Identification Diagram (ML150HPA)

ML150HPA Replacement Parts List

Parts Identification Diagram (ML250HPA)

ML250HPA Replacement Parts List

Parts Identification Diagram (ML150TPA)

ML150TPA Replacement Parts List

Parts Identification Diagram (ML250TPA)

ML250TPA Replacement Parts List

Service and Parts Support

Warranty Parts and Service Claims

Guidance on obtaining replacement parts under warranty and contacting customer service.

Service Hints and Technical Assistance

Tips for low gas pressure issues and contact details for technical support.

Optional Heater Accessories

Product Warranty Details

Warranty Registration and Terms

Instructions for product registration and the one-year limited warranty coverage.

Owner Obligations and Exclusions

Details owner responsibilities, warranty exclusions, and liability limitations.

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