User Manuals: Lochinvar NKC 110 Combination Gas Boiler

User Manuals: Lochinvar NKC 110 Combination Gas Boiler

Manuals and User Guides for Lochinvar NKC 110 Combination Gas Boiler. We have 1 Lochinvar NKC 110 Combination Gas Boiler manual available for free PDF download: Installation & Service Manual

Lochinvar NKC 110 Installation & Service Manual

Lochinvar NKC 110 Installation & Service Manual (92 pages)

Noble Combi Boiler

Brand: Lochinvar | Category: Boiler | Size: 7 MB

Table of Contents

Hazard Definitions

2
- Table of Contents
  2
- Boiler Operation
  3
- Boiler Water
  3
Please Read before Proceeding

3
- When Servicing Boiler
  3
The Noble Combi Boiler - How It Works

4
Ratings

6
1 Determine Boiler Location

7
2 Prepare Boiler

12
- Remove Boiler from Wood Pallet
  12
- Gas Conversions
  12
- Mounting the Boiler
  13
3 General Venting

14
- For more Details
  14
- Install Vent and Combustion Air Piping
  15
- F I R E T U B E C O M B I
  15
- Sizing
  16
- Max. Allowable Vent Piping Lengths
  16
- Materials
  16
- Optional Room Air
  17
- Pvc/Cpvc
  18
  - Air
    18
- Polypropylene
  19
- Stainless Steel Vent
  20
- Sidewall Direct Venting
  21
4 SIDEWALL DIRECT VENTING Vent/Air Termination - Sidewall

21
- Determine Location
  21
- Sidewall
  21
- Prepare Wall Penetrations
  23
- Multiple Vent/Air Terminations
  23
- Sidewall Termination - Optional Concentric Vent
  24
- Vertical Direct Venting
  27
5 VERTICAL DIRECT VENTING Vent/Air Termination - Vertical

27
Hydronic Piping

33
- System Water Piping Methods
  33
- Low Water Cutoff Device
  33
- Chilled Water System
  33
- Freeze Protection
  33
- General Piping Information
  33
- Near Boiler Piping Components
  34
- Hydronic Piping Diagrams
  34
Domestic Water Piping

40
- Scalding
  40
- Water Chemistry
  40
- Near Heater Piping Components
  40
- Domestic Water Piping Diagrams
  41
- Gas Connections
  44
7 GAS CONNECTIONS Connecting Gas Supply Piping

44
- Natural Gas
  45
  - Pipe Sizing for Natural Gas
    45
  - Natural Gas Supply Pressure Requirements
    45
- Propane Gas
  45
  - Pipe Sizing for Propane Gas
    45
  - Propane Supply Pressure Requirements
    45
- Check Inlet Gas Supply
  46
- Gas Pressure
  47
- Gas Valve Replacement
  47
8 Field Wiring

48
- Line Voltage Connections
  48
- Low Voltage Connections
  48
- Condensate Disposal
  51
9 CONDENSATE DISPOSAL Condensate Drain

51
10 Startup

52
- Check for Gas Leaks
  54
- Start the Boiler
  55
- Home Screen
  57
- Service Mode
  59
11 Operating Information

61
- General
  61
- Menus
  61
- Control Inputs and Outputs
  63
- Cascade
  65
- Protection Features
  65
- Sequence of Operation
  66
12 MAINTENANCE Maintenance and Annual Startup

69
- Inspect Boiler Area
  70
- Check Boiler Relief Valve
  71
- Removal of Combustion Chamber Lining
  72
- Check Flame Signal
  72
- Review with Owner
  72
13 Troubleshooting

75
14 Diagrams

87
- Ladder Diagram (Standard)
  87
- Wiring Diagram (Standard)
  88

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