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IBC SFC-99 User Manual
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INST
ALLA
TION AND OPERA
TION INSTRUCTIONS
6-2
SFC COMBI BOILERS SFC-99, SFC-125
6.1 P
AR
TS DIAGRAMS
Diagram 6.1-1: Unit assembly parts
SFC Series modulating unit - P
ar
ts assembl
y
For information on the contents of P-kits, visit the T
echnical Information portal at www
.ibcboiler
.com.
75
77
Table of Contents
Default Chapter
5
Table of Contents
5
1 Installation
9
General
9
Code Requirements
11
Location
11
Mobile Home Installations
12
Exhaust Venting and Air Intake
13
Applications
14
Exhaust Vent Material
14
Vent Travel
15
Venting Passage through Ceiling and Floor
17
Rooftop Vent Termination
17
Sidewall Vent Termination
19
Direct Vent" Combustion Air Intake Piping
23
Closet Installations
24
Condensate Removal
25
Condensate Trap
25
Installing the Condensate Trap
25
Cleaning the Condensate Trap
26
Further Installation Details
26
Water Piping - SPACE HEATING
28
General Piping Considerations
28
Basic Heating Piping Arrangements
32
Domestic Hot Water System
37
Domestic Hot Water Piping
38
Gas Piping
41
Removing the Cover
42
Electrical Connections
42
120VAC Line Voltage Hook-Up
42
Power Quality and Electrical Protection
44
Zone Valve and Zone Pump Connections
44
Thermostat / Sensor Wiring
45
2 Unit System Operation
47
General
47
Control
48
Installer Interface
48
Turning Appliance ON/OFF
48
Tankless Domestic Hot Water Modes
51
Tankless Domestic Hot Water - Standard and ECO Comfort Modes
51
Adding Domestic Hot Water Storage
52
Tankless Domestic Hot Water with a Storage Tank
52
Domestic Hot Water with an Indirect Tank Heater
52
Space Heating
52
Overview
52
Sequence of Operation
53
3 Startup & Commissioning
55
Lighting & Shutting down the Unit
55
Prior to Start-Up
56
Pre-Ignition Checks
56
Test Ignition Safety Shutoff
56
Commissioning
56
Fuel Conversion
58
Gaining Access to Combustion Chamber, Burner Removal Instructions
59
4 Maintenance
61
Unit Maintenance
61
General Care
61
Inspection
61
Venting
61
Condensate Trap
61
Burner
61
Heat Exchanger
62
Pump
62
Gas Piping
62
Control Module
62
Water Heating System
62
Freeze Protection
62
System Treatment
63
Relief Valve - Maintenance and Testing
63
Domestic Hot Water System
63
Fan and Gas Valve Removal Instructions
64
Fan and Gas Valve Re-Assembly Instructions
64
5 Troubleshooting
65
Preliminary Checks
65
Electronic Components
66
Temperature Sensors
66
Fan/Blower
67
Thermostat Connections
67
Water Pressure Sensor-Type Low Water Cut off (LWCO)
67
Flue Gas Temperature Sensor
68
Domestic Hot Water Flow Sensor
68
Domestic Hot Water Sensor
68
Outdoor Sensor
68
DHW Tank Sensor
69
Warnings and Faults
70
Warning Codes
70
Other Faults
72
No Heat (Central Heating) Fault Codes
72
Central Heating Does Not Reach the Correct Temperature
72
Central Heating System Remains too Warm
73
No Domestic Hot Water (DHW)
73
Domestic Hot Tap Water Does Not Reach the Correct Temperature
73
Burner Ignites Loudly
74
Burner Resonates
74
6 Diagrams
75
Parts Diagrams
75
Wiring Diagrams
75
Installation & Commissioning Report
80
Service Record
81
Revision History
83
4
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IBC SFC-99 Specifications
General
Brand
IBC
Model
SFC-99
Category
Boiler
Language
English
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