Lennox G23Q4/5-75 Manuals

Manuals and User Guides for Lennox G23Q4/5-75. We have 2 Lennox G23Q4/5-75 manuals available for free PDF download: Unit Information, Installation Instructions Manual

Lennox G23Q4/5-75 Unit Information (53 pages)

G23/G23X SERIES

Brand: Lennox | Category: Furnace | Size: 2.28 MB

Specifications
1
Service Literature
1
G23Q2(X)-50 Blower Performance
2
G23Q3(X)-50 Blower Performance
2
Specifications
2
G23Q2/3(X)-75 Blower Performance
3
G23Q4/5(X)-75 Blower Performance
3
G23Q3(X)-100 Blower Performance
3
G23Q5/6(X)-125 Blower Performance
5
G23Q5/6(X)-150 Blower Performance
5
Filter Air Resistance
5
Optional Accessories
6
High Altitude
6
G23(X) Orientation
7
G23(X) General Parts Orientation
7
G23(X) Heat Exchange Assembly
8
Control Box
8
Unit Components
9
Make-Up Box
9
Control Box Components
9
Control Transformer (T1)
9
Outside Installation
9
BCC Blower Control
10
Electrostatic Discharge (Esd)
10
Precautions and Procedures
10
Heat Anticipator Settings
10
Unit Operation
11
Ignition Control
11
Blower Control A15 Terminal Designations
11
Diagnostic LED
12
Combustion Air Blower
12
Johnson G776 Ignition Control Operation
12
Furnace Control A3 Diagnostic LED
12
G23(X) Upper Vest Panel
13
Blower Motors and Capacitors
13
Primary Limit Control
13
Flame Rollout Switch
13
Typical Burner Assembly
14
Pilot, Spark Electrode and Flame Sensor
14
Surelight Ignition System A3
15
Surelight Ignitor (I) and Sensor (S) Location
15
Surelight Control Board
16
Surelight Control Terminal Designations
16
Diagnostic Codes
16
Electronic Ignition
17
Fan Time Control
17
Fan-Off Time Adjustment
17
Gas Valve
18
Combustion Air Blower Prove
18
Placement and Installation
19
Combustion Air Requirements
19
Fresh Air Requirements
19
Air from Inside
20
Air from Outside
20
Equipment in Confined Space All Air from Inside
20
Flue Venting Requirements
21
Venting Using a Masonry Chimney
21
Common Venting Using Metal-Lined Masonry Chimney
22
General Venting Requirements
23
Removal of Unit from Common Venting System
27
Horizontal Venting
28
Side Wall Venting Kit Wiring
28
Start-Up
28
Gas Valve Operation
28
For Your Safety Read before Lighting
28
Safety or Emergency Shutdown
29
Extended Period Shutdown
29
Heating System Service Checks
29
Gas Piping
29
Gas Valve Regulation
30
Manifold Adjustment Procedure
30
Testing Gas Supply Pressure
30
Check Manifold Pressure
30
Gas Pipe Capacity
31
Proper Gas Flow
31
Flame Signal
31
Gas Meter Clocking Chart
31
To Measure Flame Signal-G776 Ignition Control
32
Temperature Rise
32
To Measure Temperature Rise
32
Flame Signal Microamps
32
V-Typical Operating Characteristics
32
Blower Speed Taps Leadless Motors
33
G23(X) Blower Removal
33
To Change Blower Speed
33
Blower Speed Taps Leaded Motors
33
Maintenance
34
Filters
34
Cleaning Heat Exchanger and Burners
34
Supply Air Blower
35
Flue and Chimney
35
Electrical
35
Typical G23(X) Field Wiring Diagram
36
OPERATION SEQUENCE-G23(X) -1, -2, -3 and -4 MODELS
37
Troubleshooting
38
G776 Ignition Control Troubleshooting
39
Spark Is Present but Pilot will Not Light
39
No Spark and System will Not Work
40
Pilot Lights but Main Valve will Not Come on
41
Normal Heating Mode
43
Abnormal Heating Mode
43
Surelight Control
45
Continuous Low Speed Fan Sequence of Operation
46
Upon Initial Power Up, Remove All Thermostat Demands to the Unit
47
Unit Fails to Operate in the Cooling, Heating, or Continuous Fan Mode
48
Control Signals Low Flame Sense During Heating Mode
52
Rf Static During Time for Ignition
52

Lennox G23Q4/5-75 Installation Instructions Manual (31 pages)

Brand: Lennox | Category: Furnace | Size: 0.7 MB

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Lennox G23Q4/5-75 Manuals

Lennox G23Q4/5-75 Unit Information (53 pages)

Table of Contents

Lennox G23Q4/5-75 Installation Instructions Manual (31 pages)

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