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American Standard
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50A65-475
American Standard 50A65-475 User Manual
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1
Gas Furnace Silicon
Nitride Ignitor Models
Gas Furnace Silicon
Nitride Ignitor Models
•
Single and T
wo Stage Models
•
V
ariable Speed V
ent Models
•
V
ariable Speed Blower Motor
•
T
est Procedures
•
Direct V
ent
•
Single and T
wo Stage Models
•
V
ariable Speed V
ent Models
•
V
ariable Speed Blower Motor
•
T
est Procedures
•
Direct V
ent
©
2001 American Standard Inc. All rights reserved.
©
2001 American Standard Inc. All rights reserved.
2
Table of Contents
Table of Contents
3
Model Nomenclature
5
Silicon Nitride Ignitor
6
Component Identification - Single Stage 80% Upflow/Horizontal
8
Integrated Furnace Control - CNT02854 - Superseded to CNT03076
10
Integrated Furnace Control - CNT03076
11
Single Stage 50A65-474 Sequence of Operation
12
Wiring Schematic - Single Stage 80% and 90
13
Component Identification - Two Stage 80% Upflow/Horizontal
14
Integrated Furnace Control - CNT03077
15
Two Stage 50M61-495 Sequence of Operation
16
Wiring Schematic - Two Stage Heat
17
Component Identification - Two Stage/Two Speed Vent Motor and Variable Speed Indoor Motor
18
Integrated Furnace Control - CNT03078
19
Two Stage Variable Speed Sequence of Operation
20
Wiring Schematic - Two Stage Variable Speed Indoor Blower
21
Component Identification - Two Stage 90% Variable Speed Vent Motor and Four Speed Indoor Motor
22
Integrated Furnace Control - CNT02871
23
Variable Speed Vent Motor
24
Two Stage 50V65 Sequence of Operation
26
Two Stage Heat/Variable Speed Vent Motor/Standard Indoor Blower
27
Component Identification - Two Stage 90% Variable Speed Vent Motor and Variable Speed Indoor Blower
28
Integrated Furnace Control - CNT02536
29
Two Stage 50A61 Sequence of Operation
30
Two Stage Variable Speed Vent Motor and Blower
31
Two Stage/Variable Speed Vent and Variable Speed Blower Motor Models
32
White-Rodgers Self Diagnostic Features
33
Ignition Control Flash Codes
34
Measuring Variable Speed Vent Motor RPM
35
Variable Speed Vent Motor Models
36
Diagnosing the Variable Speed Vent Motor with the Variable Speed Troubleshooter
37
Diagnosing the Variable Speed Vent Motor/Manual Method
40
Ecm Tm
42
V-Squared Furnace Motor - Control Board Schematic
43
Vent Length Table for Variable Speed Vent Motor Models Only
44
Single Wire Twinning - for Models with Twin Terminals
45
Manifold Pressure Settings
46
Furnace Pressure Switch Settings
47
Direct Vent Pressure Switch Connections
48
Direct Vent Manifold Pressure Check
48
Cleaning the Air Inducer Stirring Fan
49
Legend - System Wiring
50
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American Standard 50A65-475 Specifications
General
Brand
American Standard
Model
50A65-475
Category
Control Unit
Language
English
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