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DC 20-125
IBC DC 20-125 User Manual
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INST
ALLA
TION AND OPERA
TION INSTRUCTIONS
6-4
DC SERIES BOILERS / WA
TER HEA
TERS
DC 15-95, DC 15-96, DC 20-125, DC 33-160
Diagram 6.2-1: Boiler / water heater assembly parts
DC 15-96, 20-125, and 33-160 Modulating Boilers /
Wa
ter Heaters – Par
ts Assembly
73
75
Table of Contents
Default Chapter
1
What to Do if You Smell Gas
1
Safety Considerations
2
Supplied with the Boiler / Water Heater
2
Specifications
3
Adjustable Temperature Setting
4
Water Heater Installation Guidelines
4
Table of Contents
5
Connections
7
Dimensions / Connections for DC Series
7
Code Requirements
8
Location
8
Exhaust Venting and Air Intake
9
Clearance from Boiler / Water Heater Cabinet
9
Wall Mounting of Boiler
9
Basic Exhaust Vent Assembly
10
Applications
11
Exhaust Vent Material
11
Vent Travel
12
Maximum Exhaust Venting Length
12
Venting Passage through Ceiling and Floor
13
Rooftop Vent Termination
14
Direct Vent Concentric Roof Top Termination
14
Rooftop Vent Terminal Configurations
14
Sidewall Vent Termination
15
Direct Vent - Two Pipe
15
Vertical Concentric Termination - Two Kits
15
Vertical Concentric Termination - Single Kit
15
Direct Vent Side Wall Termination Kits
16
Sidewall Vent Termination - Piping Configuration
16
Horizontal Concentric Termination - Two Kits
17
Horizontal Concentric Termination - Single Kit
17
Concentric Side Wall Termination Kits
18
Vent Terminal Clearance Minimums
18
Sidewall Vent Termination - Multiple Vent Piping Configuration
18
Prohibited Installation
18
“Direct Vent” Combustion Air Intake Piping
20
Vent Terminal Clearance
20
Distance Inside / Outside Minimums
20
Direct Vent Combustion Air Intake
21
Maximum Intake Piping Length
21
Condensate Removal
22
"Indoor Air" Combustion Air Intake
22
Closet Installations
22
Condensate Trap Assembly - Installation
23
Condensate Trap Assembly - Cleaning Procedure
24
Condensate Trap Drainage
25
Condensate Neutralization Tank
25
Water Piping - Space Heating
26
General Piping Considerations
26
Overview of Piping Options
26
Boiler Side Pump Curve
26
Relief Piping
27
Boiler / Water Heater Trim Basic Options – Concept Drawing
28
Basic Primary/Secondary Piping with Closely-Spaced Tees Concept
29
Basic Heating Piping Arrangements
30
Boiler Pump Air Bleeding
30
Primary/Secondary Piping - Benefits and Installation Rules
30
Multiple Boiler Piping - Benefits and Installaton Rules
31
Multiple Boiler / Water Heater Piping Concept – Concept Drawing
31
Closely-Spaced Tees on Secondary Piping Concept Drawing
32
Air Handler and Direct Domestic Hot Water
33
Domestic Hot Water System
34
Warning on Water Heater Installation
34
Water Quality Table
35
Domestic Hot Water Piping
36
Tankless DHW Piping Options – Concept Drawing
37
Gas Piping
38
Gas Valve View
38
Electrical Connections
39
120VAC Line Voltage Hook-Up
39
External Probe Type Low Water Cut off Device
40
Alternate Probe Type Low Water Cut off Device Location
40
Power Quality and Electrical Protection
41
Zone Valve and Zone Pump Connections
41
Thermostat / Sensor Wiring
41
Electrical Wiring Connections Diagram
42
Suggested Field Wiring for Space Heating
43
Suggested Field Wiring for Space Heating and Priority DHW
44
Installation - General Information
7
2 Boiler / Water Heater Systems and Operation
45
General
45
Control
46
Installer Interface
46
Appliance ON/OFF
46
PSI and Fahrenheit / Bar and Celsius
47
Programing Mode
47
Adjusting the Space Heating Water Temperature
47
Adjusting the Domestic Hot Water Temperature
47
Tankless Domestic Hot Water Modes
48
Adding Domestic Hot Water Storage
48
Comfort and ECO Comfort Modes
48
Tankless Domestic Hot Water with a Storage Tank
48
Space Heating
49
Domestic Hot Water with an IBC Indirect Water Heater
49
Sequence of Operation
50
Operating Display and Service Display Codes
50
Startup and Commissioning the Boiler
51
Lighting and Shutting down the Boiler
51
Operating Instructions
51
To Turn off Gas Appliance
51
Prior to Start-Up
52
Commissioning
52
Pre-Ignition Checks
52
Test Ignition Safety Shutoff
52
CO2 Values and High and Low Fire
53
Gas Valve Adjust
53
Flue Gas Test Port Plug View
53
Fuel Conversion
54
Gaining Access to Combustion Chamber, Burner Removal Instructions
55
Disassembly
55
Blower (Torin) and Gas Valve Assembly View
55
Blower (EBM) and Gas Valve Assembly View
55
Reassembly
56
4 Maintenance
57
Boiler / Water Heater Maintenance
57
Burner Care
57
Condensate Traps Care
57
Venting
57
Control Module Care
58
Freeze Protection
58
Heat Exchanger Care
58
Water Heating System Care
58
Boiler / Water Heater Treatment
59
Domestic Water Quality Guidelines
59
Relief Valve - Maintenance and Testing
59
Fan and Gas Valve Re-Assembly Instructions
60
Fan and Gas Valve Removal Instructions
60
5 Troubleshooting
61
Preliminary Checks
61
Electronic Components Troubles
62
Temperature Sensors Troubles
62
Fan/Blower
63
Thermostat Connections
63
Water Pressure Sensor-Type Low Water Cut off (LWCO)
63
Vent High-Limit
64
Domestic Hot Water Flow Sensor
64
Domestic Hot Water Sensor
64
Outdoor Sensor
64
DHW Tank Sensor
65
Warnings and Codes
66
Warning Codes
66
Fault Codes
67
Burner Does Not Ignite
68
Burner Ignites Noisily
68
Burner Resonating
68
The Power Is Reduced
68
No Space Heating
69
Indoor Temperature Does Not Reach Desired Temperature
69
No Hot Water (DHW)
69
Hot Water Does Not Reach Temperature
70
Parts Diagrams
71
Wiring Diagrams
71
Parts Diagrams
72
DC 15-95 Modulating Boiler / Water Heater – Parts Assembly Diagram
72
Boiler Assembly Parts List
73
Boiler / Water Heater Assembly Parts Diagram
74
Wiring Diagram
76
4
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IBC DC 20-125 Specifications
General
Brand
IBC
Model
DC 20-125
Category
Boiler
Language
English
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