Allied A95UH - User Manual

506724-01 Page 1 of 57Issue 1108
This manual must be left with the homeowner for future reference.
INSTALLATION INSTRUCTIONS
A95UH, A93UH, 95G1UH & 92G1UH
Warm Air Gas Furnace
Upflow/Horizontal Left and Right Air Discharge
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
As with any mechanical equipment, personal injury can
result from contact with sharp sheet metal edges. Be
careful when you handle this equipment.
CAUTION
Improper installation, adjustment, alteration, service or
maintenance can cause property damage, personal injury
or loss of life. Installation and service must be performed
by a licensed professional installer (or equivalent), service
agency or the gas supplier.
WARNING
Manufactured By
Allied Air Enterprises, Inc.
A Lennox International, Inc. Company
215 Metropolitan Drive
West Columbia, SC 29170
Unit Dimensions ............................................................ 2
A95/A93/95G1/92G1UH Parts Arrangement ................ 3
A95/A93/95G1/92G1UH Gas Furnace ......................... 4
Shipping and Packing List ............................................ 4
Safety Information ......................................................... 4
Use of Furnace as a Construction Heater .................... 5
General ......................................................................... 6
Combustion, Dilution, Ventilation Air ............................. 6
Setting Equipment ........................................................ 9
Filters .......................................................................... 13
Duct System ................................................................ 13
Pipe and Fittings Specifications .................................. 13
Joint Cementing Procedure ........................................ 15
Venting Practices ........................................................ 16
TABLE OF CONTENTS
Vent Piping Guidelines ................................................ 17
Gas Piping .................................................................. 35
Electrical ..................................................................... 38
Unit Start Up ................................................................ 41
Gas Pressure Adjustment ........................................... 43
High Altitude Information ............................................. 43
Other Unit Adjustments ............................................... 46
Blower Motor Performance ......................................... 47
Service ........................................................................ 51
Planned Service .......................................................... 53
Diagnostic Codes ........................................................ 53
Repair Parts List ......................................................... 54
Start Up Checklist ....................................................... 55
(P) 506724-01
*P506724-01*

Summary

Unit Dimensions

Safety Information

General Safety Warnings

Crucial warnings regarding personal injury, property damage, and operational hazards.

Fiberglass Wool Hazard

Warning about exposure to fiberglass wool insulation during handling and service.

Explosion and Gas Leak Hazards

Hazards related to gas leaks, explosions, and fumes from propane or PVC glue.

Installation Procedures

Installation Locations and Clearances

Guidance on selecting installation sites and required clearances for safe operation.

Venting System Installation

Procedures for installing intake, exhaust, and termination components according to codes.

Condensate Management

Instructions for installing condensate traps and drain lines to ensure proper drainage.

Gas Piping and Pressure Setup

Steps for connecting gas supply, checking pressure, and ensuring proper flow.

Electrical Connections and Controls

Guidance on wiring, grounding, and connecting electrical components and controls.

Blower Performance and Setup

Information on blower speeds, performance data, and adjustments.

Unit Start-Up and Operation

Integrated Control and Ignition System

Details on the control board, hot surface ignition, and start-up sequence.

Start-Up and Operational Checks

Comprehensive checklists for initial setup, operation verification, and performance monitoring.

Service and Maintenance

Routine Inspection and Component Cleaning

Procedures for annual inspection, cleaning of heat exchanger, burners, and traps.

Planned Service and Diagnostics

Annual checks, diagnostic codes, and troubleshooting guidance for planned maintenance.

Repair Parts Identification

List of available replacement parts for various furnace assemblies.

Regional Compliance Requirements

Massachusetts Venting and Safety Rules

Specific installation, signage, and CO detector rules for Massachusetts.

Manufacturer Venting System Guidelines

Requirements for manufacturers regarding provided or special venting systems.

Allied A95UH Specifications

General

Fuel Type	Natural Gas
AFUE	95%
Blower Motor	Variable Speed
Heating Capacity	40, 000-120, 000 BTU/h
Stages	2
Warranty	10 years