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Lochinvar
51 operation manual Near boiler piping connections, Circulator sizing
Models:
51
1
35
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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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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
Before locating the boiler, check
Installation must comply with
Closet and alcove installations
Determine boiler location
1Closet Installation Minimum Required Clearances
Prevent combustion air contamination
Provide air openings to room
Vent and air piping
Wall mounting location
Areas likely to have contaminants
When using an existing vent system to install a new boiler
Products to avoid
When removing a boiler from existing common vent system
Gas conversions
Prepare boiler
Remove boiler from wood pallet
Mounting to a wood studded wall
Mounting the boiler
Mounting to a concrete wall
Mounting to a metal studded wall
Direct venting options Sidewall Vent
General venting
Direct venting options Vertical Vent, Sidewall Air
Direct venting options Vertical Vent
PVC/CPVC Vent piping materials
Install vent and combustion air piping
Requirements for installation in Canada
Installing vent and air piping
Make
PVC/CPVC air intake/vent connections
Air inlet pipe materials
Approved Stainless Steel Vent Manufacturers
Boiler Flue Intake Air Adapter
Stainless steel vent
Boiler Flue
Boiler
Vent, air piping and termination
Stainless steel air intake/vent connections
Removing from existing vent
Vent and air system
Model Kit Number KIT30051 Air contamination
Optional room air
Vent Size
If using the alternate sidewall termination
Sidewall direct venting
Vent/air termination sidewall
2AClearance to Gravity Air Inlets
Multiple vent/air terminations
Prepare wall penetrations
Prepare wall penetrations Alternate Field Supplied Option
Termination and fittings
Description and usage
Sidewall termination installation
Sidewall termination optional concentric vent
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
Armstrong
Model
Minimum Pipe Pump Size Grundfos
UP26-96 FC/VS IFC VS Stratos 1.25 3 x
Variable speed pump setup
Variable speed pump option
Model Grundfos
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
Length of Pipe in Straight Feet for 1/2 PSI
Natural Gas Pipe Capacity Chart
Check inlet gas supply
Gas Pressure
Gas valve replacement
Low voltage connections
Field wiring
Installation must comply with
Line voltage connections
Thermostat
Outdoor temperature sensor
Louver proving switch
Flow switch
Boiler management system
Alarm contacts
Wiring of the cascade
System supply sensor
Installation
Condensate drain
Condensate disposal
Fill and test water system
Freeze protection when used
Start-up
Check/control water chemistry
Inspect/check condensate lines and fittings
Clean/Inspect Trap Assembly
Check for gas leaks Check thermostat circuits
Inspect/fill condensate system
Check system and boiler
Final checks before starting the boiler
Start the boiler
If boiler does not start correctly
2Operating Instructions
Natural Gas Propane
Set space heating operation
Set domestic hot water DHW operation
Verify DHW mode
Configuration of the cascade
General
Operating information
Protection features
Boiler temperature regulation
Cascade
Outdoor reset operation, if used
Operation Display
Sequence of operation
User
Access modes
Installer
1Control Panel
Knight wall mount boiler control module
Call for Heat
Information
Right Select no
Owner maintenance
Maintenance Maintenance and annual startup
Service technician
Maintenance
Check expansion tank
Check ignition ground wiring
Check all boiler wiring
Check control settings
Oiled bearing circulators
Check flame signal
Cleaning boiler heat exchanger
Review with owner
PC Interface
Diagrams
2Wiring Diagram
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