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Manuals
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CONQUEST Manuals
Furnace
90
Service manual
CONQUEST 90 Service Manual
Ga supflow, gas downflow
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Page Number
Introduction
Furnace Design
Unit Model Number Explanation
Unit Serial Number Explanation
Unit Specifications
Furnace Components
Heat Exchanger Sub-System
Combustion Sub-System
Induced Draft Blower
Electrical Controls Sub-System
Integrated Furnace Control
Pressure Switch
Limit Switch
Air Handling Sub-System
Cabinet
Accessories and Optional Equipment
L.p. Conversion Kits
Combustible Floor Bases
Fossil Fuel Kits
Return Air Cabinets
Neutralizer Kit
Condensate Pump Kit
Horizontal Vent Kits
Horizontal Concentric Vent Kit
External Side Filter Racks
Vertical Concentric Vent Kit
High Altitude Pressure Switch and Orifice Kit
J" Series Twinning Kit
(·)GRJ Upflow Furnace Bottom Kit
Installation Requirements
Safety Rules
Installation Procedures
Location
Clearance/Accessibility
Right Side
Combustion Air and Vent Terminations
Joining Pipe and Fittings
General Information
Cementing Joints
NON-DIRECT VENT FURNACE INSTALLATIONS (One Pipe)
Combustion Air
Furnace Located in an Unconfined Space
Installation Guidelines
Non-Direct Vent Termination Construction
Horizontal Vent Location Requirements
DIRECT VENT FURNACE INSTALLATIONS (Two Pipe)
Combustion Air
Installation Guidelines
Combustion Air Pipe Terminations
Connecting Combustion Air Inlet to the Furnace
Alternate Horizontal Direct Vent Termination
Exhaust Vent
Concentric Horizontal Vent Kit
Concentric Vertical Vent Kit
Direct Vent and Combustion Air Pipe Sizing Information
Vent Termination
Location Guidelines for Horizontal Direct Vents
Concentric Venting
Multi-Venting
Connecting the Vent to the Furnace
Condensate Drain/Neutralizer Installation
Reversing the Trap
Condensate Drain Installations for Horizontal Applications
Condensate Line Vent for Horizontal Installations
Filling the Trap
Condensate Pump
Supply and Return Air Ducting
Supply Air Ducting
Upflow Unit Return Air
Gas Supply
Gas Piping
Gas Pressure
Gas Valve
LP Conversion
Electrical Wiring
Tf:iermostat
Heat Anticipator Settings
Isolation Relay
Furnace Start up Procedures
To Start the Furnace
Toshutdownthefurnace
Sequence of Operation
Setting Gas Pressure
Air Flow
Blower Wiring Connections
Setting the Blower off Timings
Field Installed Accessory Connections
High Altitude Kits
Electrical Checks
Polarity Check
Furnace Twinning
Honeywell Twinning Instructions
UTEC Twinning Instructions
Johnson Controls Twinning Instructions
Twinned Furnace Operation
Fossil Fuel Kits
Fossil Fuel Kit (Rxpf - F01)
Location and Wiring
Thermostat Operations
Fossil Fuel Kit (RXPF • F02)
Maintenance
Filters
Lubrication
Heat Exchanger
Flame Sensor
Replacement Parts
Service and Troubleshooting Introduction
Test Equipment
Installation and Service Check List
Main Power "J" Box
Blower Door Switch
Control Descriptions and Troubleshooting
Integrated Furnace Controls with Hot Surface Ignition
UTEC 1012-920 and Honeywell S9201 E2001 Controls
UTEC 1012-925 Controls
Operation
Troubleshooting
Integrated Furnace Controls with Direct Spark Ignition
UTEC 1028-927 and JCI G961DAJ-2401 Controls
IFC Ignition Transformer
Control Reactions
Main Burner
Hazardous Voltage
Line Voltage
Controls
Negative Pressure Switches
Induced Draft Blower Negative Pressure Switch
Drain Pressure Switch
High Altitude Pressure Switch
High Limit Control
Heat Assisted Limit Control
Overtemperatureswitch
Transformer
Blower Motor
Induced Draft Blower Assembly
Gas Valve
Checking Furnace Input
Hot Surface Lgniters
Direct Spark Lgniters
Remote Flame Sensing Rod
Reasons for Burner Lockout
Airflow
CO and CO2 Levels in the Flue Gases
Flue Gas Temperature Range
Wiring Diagrams
Two Stage Operation
Service Analyzer Charts
Review Questions
Index
Index of Figures
Index of Tables
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CONQUEST
CONQUEST
GASUPFLOW
GAS DOWNFLOW
Table of
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Table of Contents
Troubleshooting
SERVICE AND TROUBLESHOOTING INTRODUCTION
74
CONTROL DESCRIPTIONS AND TROUBLESHOOTING
77
TROUBLESHOOTING
80
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