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CX Series
IBC CX Series User Manual
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Gas
valve
inlet
Nut
ret
ainer
Gasket
Gas
valve
outlet
pipe
Inlet
gas
pressure
test
port
Brass
u
nion
nut
Manifold
gas
pressure
test
port
Gasket
Low
fire
adjustment
(offset
pressure)
Mixer
High
Fire
Adjustment
Fan
O
-ring
Gas
valve
Fan
coupl
er
O-ring
Fan
Figure
44
Gas
valve
and
fan
components
7.3.1
Repla
cing
the
fan
91
7.3.1
Replacing
the
fan
90
92
Table of Contents
Table of Contents
3
Safety Information
7
Manual Safety Markings
7
Important Safety Instructions
7
Known Contaminants
9
Specifications
11
Cabinet Dimensions
12
CX 150 Dimensions
12
CX 199 Dimensions
13
Connection Specifications
14
Introduction
15
Standard Features and Benefits
15
Warranty
16
Before Installation
17
Installation
19
Code Requirements
19
Removing an Existing Boiler
19
Determining Location of the Appliance
20
Best Installation Conditions
21
Mounting the Boiler
21
Connecting the Vent and Air Intake Pipes
23
Installation Clearances
24
Exhaust Venting and Air Intake
24
Venting Code
25
Venting Options
25
Exhaust Vent Material
25
Direct Vent
26
Rooftop Vent Termination
30
Sidewall Vent Termination
32
Indoor Air Combustion Air Intake
40
Combustion Air Filtration System
41
Closet Installations
42
Installing a Condensate Trap
42
Installing a Condensate Neutralizer
45
Water Piping (Space Heating)
47
General Piping Best Practices
50
System Piping
50
Water Piping (Domestic Hot Water)
59
Domestic Hot Water System
59
Domestic Hot Water Piping
61
Gas Piping
64
Gas Pressure
64
Electrical Connections
65
Power Management, Quality and Electrical Protection
66
120VAC Line-Voltage Hook-Up
66
Other Wiring
68
Thermostat / Sensor Wiring
68
Wiring Zone Valves in Place of Pumps
68
Thermostat Heat Anticipator
69
About the Boiler Controller
71
Controller
71
Control Interface
72
Before Operating the Boiler
73
Important Pre-Ignition Checks
73
Checklist for Electrical Conditions, Ducting and Water Connections
73
Boiler Operation
75
Lighting and Shutting down the Boiler
75
Testing the Ignition Safety Shutoff
76
Commissioning
76
Checking a Boiler's Fuel Source
77
Performing a Fuel Conversion
77
Adjusting the Gas Valve
78
Testing the LWCO Function
82
Testing the Hi-Limit Cutoff Temperature Function
83
Service and Maintenance
85
Maintenance Checklist for Homeowner
85
Maintenance Checklist for Heating Contractor
85
Touchscreen Boiler Controller
86
General Combi Boiler Maintenance
87
Replacing the Fan, Gas Valve, and Burner
90
Replacing the Fan
91
Replacing the Gas Valve
92
Replacing the Burner
94
Maintenance of the On-Demand DHW Block
96
Cleaning the Bypass Check Valve
97
Replacing the Bypass Actuator
97
Removing the Flow Sensor
97
Cleaning the Water Strainer / Flow Restrictor
97
Cleaning the Sight Glass
98
Cleaning the Condensate Trap
98
Ensure Door in Place
101
Troubleshooting
103
Electronic Components
103
Temperature Sensors
103
Fan
104
Water Pressure Sensor
104
DHW Flow Sensor
105
Safety and Ignition Module (SIM+)
105
Troubleshooting Error Messages
107
Maximum Ignition Trials Error
108
Hi Limit Cut-Off Temperature Error
108
Low Water Cut-Off Error
108
Aux. Interlock 1 or
109
Miscellaneous Touchscreen Controller Errors
109
Ignition Issues
110
Temperature Issues
111
Miscellaneous Issues
112
Cycling Issues
113
Appendices
114
Wiring Diagrams
114
Exploded Views of the CX 150, CX 199 Appliance
117
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Quick Start
2 pages
4
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IBC CX Series Specifications
General
Brand
IBC
Model
CX Series
Category
Boiler
Language
English
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