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National Comfort Products Comfort Pack CP842438UA User Manual

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Installation
Guide
Comfort Pack Gas
U-Series
Non Condensing Furnace
This unit should be installed in an
OUTSIDE WALL for THRU-THE-WALL
INSTALLATION ONLY!
Read Installation Manual prior to starting the installation.
This manual must be left with the homeowner for future reference.
80% AFUE
National Comfort Products
A Division of National Refrigeration and Air Conditioning Products, Inc.
539 Dunksferry Road • Bensalem, PA 19020-5908
(800) 523-7138 • Fax (215) 639-1674
www.nationalcomfortproducts.com
HEATING & A/C EQUIPMENT
NATIONAL
COMFORT
PRODUCTS
®
Go Thru-the-Wa
CP8
U-Series
HEATING & A/C EQUIPMENT
NATIONAL
COMFORT
PRODUCTS
®
Thru-the-Wa Comfort for a types of Multi-Family Construction
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National Comfort Products Comfort Pack CP842438UA Specifications

General IconGeneral
BrandNational Comfort Products
ModelComfort Pack CP842438UA
CategoryAir Conditioner
LanguageEnglish

Summary

Safety Warnings

Hazard Intensity Levels

Defines DANGER, WARNING, and CAUTION levels for safety.

General Safety Precautions

Covers electrical, flammability, water damage, and high voltage safety.

Gas Leak Detection and Response

Procedures for responding to detected gas leaks.

Before You Start

Initial Unit Preparation

Prepares unit for installation, including shipping bolt removal.

Installation Procedures

Cabinet and Chassis Installation

Steps for installing the chassis into the unit's cabinet.

Unit Clearances

Unit Location Considerations

Mounting and Obstructions

Wall mounting, opening requirements, and obstruction avoidance.

Vent Termination Clearances

US Installation Clearance Table

Table detailing required clearances for vent terminals in the USA.

Venting Safety Notes

Important considerations and warnings for vent termination placement.

Electrical Requirements

Wiring and Voltage Specifications

Guidelines for electrical wiring, grounding, and voltage compatibility.

High Voltage Power Supply

DSI Control Module Identification

Gas Furnace Specifications

Gas Heat Sequence of Operations

Step-by-step description of the heating cycle and control logic.

Abnormal Functions and Lockouts

High Altitude Operation Adjustments

Procedures for derating and adjusting the unit for high altitudes.

Pressure Switch Replacement

High Altitude Derating Procedure

Steps for adjusting valve outlet pressure for high altitudes.

Clearance to Combustibles

Venting System Requirements

Information on proper functioning and installation of the venting system.

Gas Piping and Pressure Testing

Guidelines for gas supply piping installation, support, and leak testing.

Valve Outlet Pressure Settings

Checking Valve Outlet Pressure

Procedure for verifying gas pressure at the valve outlet.

Ignition System Overview

Ignition Sequence of Operation

Step-by-step description of the burner ignition process.

Flame Rollout Switch Operation

Pre-Start Up Installation Checks

Essential checks before initial unit startup.

Operating Instructions and Sequence

Extremely Cold Weather Precautions

Recommendations for operating in very low temperatures.

Gas Burner Combustion Safety

General Maintenance and Service

Overview of routine maintenance tasks for the unit.

Routine Maintenance Schedule

Heat Exchanger Inspection and Replacement

Limit Control Service

Slide Out Furnace Procedure

Front Panel and Baffle Removal

Initial steps to remove front panels and baffles for access.

Temperature Rise Measurement

CFM and Temperature Rise Data

Air Flow Data Tables

Wiring Diagram

Control Module Status Indicators

Troubleshooting Guide

Venter Motor and Burner Issues

Common problems with venter motor and burner ignition.

Pressure, Cycle, and No Heat Issues

Diagnosing issues with gas pressure, cycling, and lack of heating.

Warranty Compressor Removal Procedure

Compressor Testing and Data

Steps for testing compressor windings, capacitance, and pressures.

Warranty Claim Process

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