User Manuals: Lochinvar NOBLE NKB 90 Fire Tube Boiler

Manuals and User Guides for Lochinvar NOBLE NKB 90 Fire Tube Boiler. We have 1 Lochinvar NOBLE NKB 90 Fire Tube Boiler manual available for free PDF download: Installation & Service Manual

Lochinvar NOBLE NKB 90 Installation & Service Manual

Lochinvar NOBLE NKB 90 Installation & Service Manual (100 pages)

Fire Tube Boiler and Combi

Brand: Lochinvar | Category: Boiler | Size: 18 MB

Table of Contents

Hazard Definitions

2
- Table of Contents
  2
Please Read before Proceeding

3
The Noble Fire Tube - 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
- Install Vent and Combustion Air Piping
  15
- Sizing
  16
- Max. Allowable Vent Piping Lengths
  16
- Materials
  16
- Optional Room Air
  17
- Pvc/Cpvc
  18
- Polypropylene
  19
- Stainless Steel Vent
  20
4 SIDEWALL DIRECT VENTING Vent/Air Termination - Sidewall

21
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

45
- Scalding
  45
- Water Chemistry
  45
- Near Heater Piping Components
  45
- DHW Pressure Drop Chart
  46
- Combi Sequence of Operation
  46
- Domestic Water Piping Diagrams
  47
7 GAS CONNECTIONS Connecting Gas Supply Piping

50
- Natural Gas
  51
  - Pipe Sizing for Natural Gas
    51
  - Natural Gas Supply Pressure Requirements
    51
- Propane Gas
  51
  - Pipe Sizing for Propane Gas
    51
- Propane Supply Pressure Requirements
  51
- Check Inlet Gas Supply
  52
- Gas Pressure
  53
- Gas Valve Replacement
  53
8 Field Wiring

54
- Line Voltage Connections
  54
- Low Voltage Connections
  54
9 CONDENSATE DISPOSAL Condensate Drain

58
10 Startup

59
11 Operating Information

68
- General
  68
- Menus
  68
- Control Inputs and Outputs
  69
- Cascade
  72
- Protection Features
  72
- Sequence of Operation
  74
12 MAINTENANCE Maintenance and Annual Startup

76
13 Troubleshooting

82
14 Diagrams

95

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