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Lochinvar
151-286 operation manual 2Operating Instructions
Models:
151-286
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Install
Diagrams
Gas valve replacement
Maintenance
Configuration of the cascade
Connecting gas supply piping
Outdoor reset operation
Variable speed pump setup
Alarm contacts
Check control settings
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Outdoor Knight Boiler Installation & Operation Manual
7
Start-up
Figure
7-2
Operating Instructions
36
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Image 36
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Contents
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Contents
When servicing boiler
Please read before proceeding
Outdoor Knight Boiler How it works
Stainless steel heat exchanger
Models 151
Model
Ratings
Outdoor Knight Boiler Ahri Rating
Installation must comply with
Determine boiler location
Before locating the boiler, check
Provide clearances
Outdoor vent / air intake location Flooring and foundation
Prevent combustion air contamination
Prepare boiler
Remove boiler from wood pallet
Gas conversions
Leveling the boiler
286
Hydronic piping
Near boiler piping components
System temperature sensor
Near boiler piping connections
Circulator sizing
Indirect water heaters
Feet
Pressure
Model
Minimum Pipe Pump Size Grundfos
Smart System / Multi-temperature loop control option
Variable speed pump setup
Variable speed pump option
UP26-96 FC/VS IFC VS Stratos 1.25 3 x
Zone #1
Number of Units Model Required Pipe Sizes
6Single Boiler Multiple Temperatures
151 211 286
IMG00374
Number of Units
10Multiple Boilers Non-Zoned Primary/Secondary Piping
Connecting gas supply piping
Gas connections
Natural gas
Propane Gas
Single Unit Natural Gas Pipe Capacity Chart
Check inlet gas supply
Length of Pipe in Straight Feet for 1/2 PSI
Gas valve replacement
Gas Pressure
Field wiring
Installation must comply with
Line voltage connections
Low voltage connections
Outdoor temperature sensor
High gas pressure switch
Low gas pressure switch
Thermostat
Flow switch Runtime contacts
Alarm contacts
Wiring of the cascade
System supply sensor
3Low Voltage Field Wiring Connections
Condensate disposal
Condensate drain
Freeze protection when used
Start-up
Check/control water chemistry
Fill and test water system
Check for gas leaks
Check thermostat circuits
Inspect/fill condensate system
Inspect/check condensate lines and fittings
Final checks before starting the boiler
Start the boiler
If boiler does not start correctly
Check system and boiler
2Operating Instructions
Set space heating operation
Natural Gas Propane
Verify DHW mode
Configuration of the cascade
Set domestic hot water DHW operation
Operating information
General
How the boiler operates
How the control module operates
Temperature control
Protection features
Boiler temperature regulation
Outdoor reset operation
Cascade
Sequence of operation
Operation Display
Standby, ready to start a new cycle
Access modes
Installer
Outdoor Knight boiler control module
User
Call for Heat
Operating information
Dial Function
Maintenance Maintenance and annual startup
Service technician
Owner maintenance
Maintenance
Flue vent system and air piping
Check water system
Check expansion tank
Check boiler relief valve
Check ignition ground wiring
Check all boiler wiring
Check control settings
Check flame signal
Cleaning boiler heat exchanger
Review with owner
Oiled bearing circulators
Model Kit Part Component Number Description
Diagrams
PC Interface
120 VAC
High Voltage