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Lochinvar
51 Provide air openings to room, Vent and air piping, Wall mounting location
Models:
51
1
9
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Install
Diagrams
Gas valve replacement
Maintenance
Configuration of the cascade
Connecting gas supply piping
Variable speed pump setup
Clean/Inspect Trap Assembly
Alarm contacts
Check control settings
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Image 9
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Contents
Models 51
Contents
Please read before proceeding
When servicing boiler
Stainless steel heat exchanger
Knight Wall Mount Boiler How it works
Models 51
Knight Wall Mount Boiler =B=R Rating
Ratings
Closet and alcove installations
Installation must comply with
Determine boiler location
Before locating the boiler, check
1Closet Installation Minimum Required Clearances
Vent and air piping
Provide air openings to room
Wall mounting location
Prevent combustion air contamination
When using an existing vent system to install a new boiler
Products to avoid
Areas likely to have contaminants
When removing a boiler from existing common vent system
Prepare boiler
Remove boiler from wood pallet
Gas conversions
Mounting to a concrete wall
Mounting the boiler
Mounting to a metal studded wall
Mounting to a wood studded wall
Direct venting options Sidewall Vent
General venting
Direct venting options Vertical Vent, Sidewall Air
Direct venting options Vertical Vent
Requirements for installation in Canada
Install vent and combustion air piping
Installing vent and air piping
PVC/CPVC Vent piping materials
Air inlet pipe materials
PVC/CPVC air intake/vent connections
Approved Stainless Steel Vent Manufacturers
Make
Boiler Flue
Stainless steel vent
Boiler
Boiler Flue Intake Air Adapter
Removing from existing vent
Stainless steel air intake/vent connections
Vent and air system
Vent, air piping and termination
Model Kit Number KIT30051 Air contamination
Optional room air
Sidewall direct venting
If using the alternate sidewall termination
Vent/air termination sidewall
Vent Size
2AClearance to Gravity Air Inlets
Prepare wall penetrations Alternate Field Supplied Option
Prepare wall penetrations
Termination and fittings
Multiple vent/air terminations
Sidewall termination installation
Sidewall termination optional concentric vent
Description and usage
Sidewall termination optional concentric vent models
8Concentric Vent Dimensional Drawing
Multiventing sidewall terminations
10Concentric Vent Sidewall Attachment
Vent/air termination vertical
Vertical direct venting
2Vertical Terminations with Multiple Boilers
Prepare roof penetrations
Vertical termination optional concentric vent
Vertical termination installation
Minimum Combustion AIR Typical
Multiventing vertical terminations
Concentric Venting Arrangement
Alternate vertical concentric venting
AIR Inlet Flue Exhaust Seal CAP Existing Flue Outlet
Existing vent as a chase
Hydronic piping
Near boiler piping components
Circulator sizing
Near boiler piping connections
Model
Minimum Pipe Pump Size Grundfos
Armstrong
Variable speed pump option
Variable speed pump setup
Model Grundfos
UP26-96 FC/VS IFC VS Stratos 1.25 3 x
3Single Boiler Single Temperature Zoned with Circulators
Number of Units
5Single Boiler Multiple Temperatures
Multiple Boilers Multiple Temperatures
Model
8Single Boiler Zoned with Valves
Model
10Single Boiler Non-Zoned Primary/Secondary Piping
Gas connections
Connecting gas supply piping
Propane Gas
Natural gas
Natural Gas Pipe Capacity Chart
Check inlet gas supply
Length of Pipe in Straight Feet for 1/2 PSI
Gas Pressure
Gas valve replacement
Installation must comply with
Field wiring
Line voltage connections
Low voltage connections
Louver proving switch
Outdoor temperature sensor
Flow switch
Thermostat
Wiring of the cascade
Alarm contacts
System supply sensor
Boiler management system
Installation
Condensate drain
Condensate disposal
Start-up
Freeze protection when used
Check/control water chemistry
Fill and test water system
Check for gas leaks Check thermostat circuits
Clean/Inspect Trap Assembly
Inspect/fill condensate system
Inspect/check condensate lines and fittings
Start the boiler
Final checks before starting the boiler
If boiler does not start correctly
Check system and boiler
2Operating Instructions
Natural Gas Propane
Set space heating operation
Verify DHW mode
Configuration of the cascade
Set domestic hot water DHW operation
General
Operating information
Protection features
Boiler temperature regulation
Cascade
Outdoor reset operation, if used
Operation Display
Sequence of operation
Access modes
Installer
User
1Control Panel
Knight wall mount boiler control module
Call for Heat
Information
Right Select no
Maintenance Maintenance and annual startup
Service technician
Owner maintenance
Maintenance
Check all boiler wiring
Check ignition ground wiring
Check control settings
Check expansion tank
Cleaning boiler heat exchanger
Check flame signal
Review with owner
Oiled bearing circulators
PC Interface
Diagrams
2Wiring Diagram
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