Lennox GSR14 Condensing Furnace Manuals

Manuals and User Guides for Lennox GSR14 Condensing Furnace. We have 2 Lennox GSR14 Condensing Furnace manuals available for free PDF download: Service Information, Installation

Lennox GSR14 Service Information

Lennox GSR14 Service Information (39 pages)

Brand: Lennox | Category: Furnace | Size: 2 MB

Table of Contents

Introduction
1
Pulse Combustion Process
1
Parts Arrangement
2
Specifications
3
Horizontal Application
3
Unit Components
4
Make-Up Box
4
Low Voltage Terminal Strip
4
Transformer
4
Secondary Limit
5
Ignition Control
5
Watsco Control
6
Gas Energy Control
6
Primary Control Functions
7
Normal Ignition Sequence Timings
7
Ignition Attempt Sequence for Retrials
7
Ignition Control Timing
8
Gas Energy Ignition Control Timing
8
Watsco Ignition Control Timing
8
Gas Valves and Expansion Tank
9
Conversion of White Rodgers Gas Valve
9
Expansion Tank
9
Gas Valve Conversion
9
Differential Pressure Switch
10
Gas Intake Flapper Valve
10
Convertible Gas Valve
10
Combustion Components
11
Air Intake and Purge Blower
11
Air Intake Flapper Valve
11
Exhaust Decoupler
11
Blower Motors and Capacitors
12
Blower Speed Selection
12
Spark Plug and Sensor
12
Gas and Air Components
12
Sequence of Operation
13
Proper Installation
14
Transporting the Unit
14
Support Frame and Suspension Rods
14
Isolation Mounting Pads
14
Typical Installations
15
Ball Float Condensate Trap
15
Condensate Line
16
Typical Heat Wrap Tape Installation
16
Typical Drip Leg Installations
16
Condensate Trap Installation
16
Ball Float Condensate Trap Installation
17
Typical Gas Connection
18
Field Wiring Diagram
18
Flexible Gas Connector
18
Muffler
19
Exhaust Insulation
19
Concentric Termination
19
Minimum Diameter for GSR14 Venting
19
AGA & CGA Unit Roof Termination
20
CGA Units Only Individual Wall Terminations
20
Maintenance
21
Supply Air Blower
21
Filters
21
To Measure Temperature Rise
21
Manifold Pressure
22
Line Pressure
22
Flame Signal
22
Exhaust Temperature Range
22
Exhaust CO Content
23
Safety Shutdown
23
Internal Component Temperatures
24
Condensate Ph Range
24
Acceptable Operating Input
24
Checking Gas Input
24
Meter Flow Rate
25
New Unit Startup
26
Troubleshooting
26
Air Flapper Valve Assembly
27
Checking Air Intake Flapper Valve
27
Air Flapper Valve Required Clearance
28
Checking the Gas Flapper Valve
29
Checking the Gas Orifice
29
Other Problems
30
Blower Runs Continuously
30
Abnormal Sounds
30
Supply Air Blower Does Not Run
30
Basic Diagnostic Flow Chart
31
Unit will Not Run
31
Troubleshooting Flow Chart
32
Unit Starts Clean but Runs Less
36
Unit Runs but Shuts off before Thermostat Is Satisfied
37
Unit Accessories
38
Low Ambient Thermostat Kit
38
Low Ambient Kit Operating Sequence
38

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