EasyManua.ls Logo

Lochinvar NKC 150 User Manual

Lochinvar NKC 150
92 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
Page #1 background imageLoading...
Page #1 background image
100275091_2000533998_Rev C
FIRE TUBE COMBI
Noble Combi Boiler
Installation & Service Manual
Models: 110 - 199
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.
WARNING
Save this manual for future reference.

Table of Contents

Question and Answer IconNeed help?

Do you have a question about the Lochinvar NKC 150 and is the answer not in the manual?

Lochinvar NKC 150 Specifications

General IconGeneral
BrandLochinvar
ModelNKC 150
CategoryBoiler
LanguageEnglish

Summary

1 Determine Boiler Location

Vent and Air Piping

Requirements for routing vent and air piping.

Prevent Combustion Air Contamination

Avoiding sources of contaminants in combustion air supply.

When Using an Existing Vent System

Checks and considerations before installing into an existing vent system.

When Removing a Boiler from Existing Common Vent System

Steps to follow when disconnecting from a common venting system.

2 Prepare Boiler

Gas Conversions

Instructions for converting the boiler from natural gas to propane.

3 General Venting

Install Vent and Combustion Air Piping

Instructions for installing vent and air piping systems.

PVC/CPVC Venting

Installation instructions and approved materials for PVC/CPVC venting.

Polypropylene Venting

Installation instructions and approved materials for polypropylene venting.

Stainless Steel Vent

Installation instructions and approved materials for stainless steel venting.

4 Sidewall Direct Venting

Vent/Air Termination - Sidewall

Guidelines for determining sidewall vent locations.

Sidewall Termination - Optional Concentric Vent

Installation of optional concentric sidewall vent termination kits.

5 Vertical Direct Venting

Vent/Air Termination - Vertical

Guidelines for determining vertical vent locations.

Vertical Termination - Optional Concentric Vent

Installation of optional concentric vertical vent termination kits.

Alternate Vertical Concentric Venting

Using an existing unused venting system as a chase.

Existing Vent as a Chase

Routing vent and combustion air through an existing chase.

6A Hydronic Piping

System Water Piping Methods

Requirements for closed-loop pressurized hydronic systems.

General Piping Information

Basic steps and important considerations for system piping.

6B Domestic Water Piping

Scalding

Warning about high temperature water and scald injury potential.

7 Gas Connections

Connecting Gas Supply Piping

Procedure for connecting the gas supply pipe to the boiler.

Check Inlet Gas Supply

Procedure for checking gas supply pressure and connections.

Gas Pressure

Specifies minimum and maximum gas pressure requirements.

Gas Valve Replacement

Warning against replacing the gas valve with a conventional type.

8 Field Wiring

Installation Compliance

Wiring must comply with NEC, CSA, and local codes.

9 Condensate Disposal

Condensate Drain

Instructions for connecting and routing the condensate drain line.

10 Start-up

Fill Water

Recommendations for filling the boiler with appropriate water chemistry.

Freeze Protection

Guidance on using glycol for freeze protection, including warnings.

Oxygen Prevention

Steps to eliminate system leaks and prevent oxygen ingress.

Fill and Test Water System

Procedure for filling the system and checking for leaks.

Purge Air from Water System

Instructions for removing air from the hydronic system.

Check for Gas Leaks

Procedure for detecting and addressing gas leaks.

Final Checks Before Starting the Boiler

Pre-startup checklist for system, wiring, and piping.

Start the Boiler

Operating instructions for starting the boiler.

Noble Combi Boiler Control Module

Overview of the control panel and its functions.

Setup Wizard

Guided process for initial setup of boiler parameters.

Service Mode

Accessing and using the service mode for diagnostics.

Set Domestic Hot Water (DHW) Operation

Configuring DHW set points and verifying operation.

11 Operating Information

Set Points Menu (User Access)

Accessing and adjusting user-configurable set points.

Installer Menu (Installer Only Access)

Accessing advanced settings requiring installer password.

Control Inputs and Outputs

Description of sensors, switches, and outputs affecting boiler operation.

12 Maintenance

Maintenance and Annual Startup

Schedules and procedures for service technician and owner maintenance.

13 Troubleshooting

Related product manuals