Noble Fire Tube Boiler and Combi Installation & Service Manual - NKC 110 - 199 - Installation & Service Manual

Oct 22, 2026

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Installation, service, and venting guidance for Noble fire tube boilers and combi systems (series 100-101 and 110-111, models NKC 110-199, NKB 80-199, NCF 110-199). The manual emphasizes safe use by qualified heating installers, outlines required clearances and air openings, covers boiler preparation steps, and provides comprehensive direct vent options for sidewall and vertical terminations. It also includes ratings, gas connection procedures, and hydronic and domestic water piping diagrams plus water chemistry and scalding considerations.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages100

Reading Time4 h 12 min

AccessFree to download

HAZARD DEFINITIONS

PLEASE READ BEFORE PROCEEDING

THE NOBLE FIRE TUBE--HOW IT WORKS

RATINGS

1. DETERMINE BOILER LOCATION

Provide Clearances

Provide Air Openings to Room

2. PREPARE BOILER

Remove Boiler from Wood Pallet

Gas Conversions

3. GENERAL VENTING

Direct Venting Options

Install Vent and Combustion Air Piping

4. SIDEWALL DIRECT VENTING

Vent/Air Termination-Sidewall

5. VERTICAL DIRECT VENTING

Vent/Air Termination-Vertical

6A. HYDRONIC PIPING

System Water Piping Methods

6B. DOMESTIC WATER PIPING

Scalding

7. GAS CONNECTIONS

Connecting Gas Supply Piping

100275091 2000533998 Rev AM _ _ Noble Fire Tube Boiler and Combi Installation & Service Manual NKC 110 - 199, NKB 80 - 199,& NCF 110-199 Series 100 - 101 & 110 - 111 ⚠ WARNING This manual must only be used by a qualified heating installer / service technician. Read all instructions in this manual before installing. Perform steps in the order given. Failure to comply could result in severe personal injury, death, or substantial property damage. Save this manual for future reference. FIRE TUBE Contents HAZARD DEFINITIONS .............................................................. 2 PLEASE READ BEFORE PROCEEDING .......................... 3 THE NOBLE FIRE TUBE--HOW IT WORKS ................... 4-5 RATINGS ........................................................................................... 6 1. DETERMINE BOILER LOCATION Provide Clearances .............................................................................. 7 Provide Air Openings to Room......................................................... 9 Wall Mounting Location ................................................................... 9 Flooring and Foundation ................................................................... 9 Residential Garage Installation .......................................................... 9 Vent and Air Piping ............................................................................ 9 Prevent Combustion Air Contamination ...................................... 10 Corrosive Contaminants and Sources ............................................ 10 Using an Existing Vent System to Install a New Boiler............... 11 Removing a Boiler from Existing Common Vent ........................ 11 2. PREPARE BOILER Remove Boiler from Wood Pallet ................................................... 12 Gas Conversions .......................................................................... 12-13 Mounting the Boiler .......................................................................... 13 Leveling the Boiler ............................................................................. 13 3. GENERAL VENTING Direct Venting Options .................................................................... 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 .............................................. 21-23 Determine Location ............................................................... 21-22 Prepare Wall Penetrations .......................................................... 23 Multiple Vent/Air Terminations..................................................... 23 Sidewall Termination-Optional Concentric Vent ................ 24-26 5. VERTICAL DIRECT VENTING Vent/Air Termination-Vertical ............................................... 27-28 Determine Location ..................................................................... 27 Prepare Roof Penetrations .......................................................... 28 Multiple Vent/Air Terminations..................................................... 28 Vertical Termination-Optional Concentric Vent................. 29-3

FAQs

Who is this manual intended for?

It must only be used by a qualified heating installer or service technician. Read all instructions before installing and follow the steps in order.

What does the manual cover for boiler installation planning?

It provides guidance for determining boiler location, including required clearances, air openings to the room, wall mounting location, flooring and foundation, and vent/air piping considerations.

How does the manual address venting for different installations?

It explains general venting choices, then details sidewall direct venting and vertical direct venting, including how to determine location and prepare wall or roof penetrations.

Oct 22, 2026

Upload by Tirek