Lochinvar 40 - 120 User Manual

CAD-USER Rev A
User’s Information Manual
Models: 40 - 120
If the information in this manual is not followed exactly, a fire or
explosion may result causing property damage, personal injury or
loss of life.
This appliance MUST NOT be installed in any location where
gasoline or flammable vapors are likely to be present.
WHAT TO DO IF YOU SMELL GAS
• Do not try to light any appliance.
• Do not touch any electric switch; do not use any phone in your
building.
• Immediately call your gas supplier from a near by phone.
Follow the gas supplier’s instructions.
• If you cannot reach your gas supplier, call the fire department.
• Installation and service must be performed by a qualified
installer, service agency, or the gas supplier.
 WARNING
Save this manual for future reference.

Lochinvar 40 - 120 Specifications

General

Brand	Lochinvar
Model	40 - 120
Category	Boiler
Language	English

Summary

Hazard Definitions

DANGER Definition

Defines DANGER hazard level indicating an imminently hazardous situation.

WARNING Definition

Defines WARNING hazard level indicating a potentially hazardous situation.

CAUTION Definition

Defines CAUTION hazard level for minor to moderate injuries.

NOTICE Definition

Defines NOTICE for special instructions not related to personal injury.

Pre-Operation Safety and Procedures

Boiler Service and Maintenance Safety

Precautions for servicing and maintaining the boiler, including electrical safety.

Boiler Operation Guidelines

Instructions for safe and proper boiler operation, including air flow and flooding.

Boiler Water and Freeze Protection

Advice on boiler water quality, sediment, and use of freeze protection fluids.

Prevent Combustion Air Contamination

Corrosive Contaminants and Sources

Lists products and areas that can contaminate combustion air and damage the boiler.

Avoiding Contamination Risks

Actions required to prevent severe personal injury or death from contamination.

Maintenance Schedule Overview

Service Technician Annual Start-Up

General and specific tasks for qualified technicians during annual start-up.

Owner Maintenance - Daily & Monthly

Daily and monthly checks to be performed by the owner for boiler upkeep.

Owner Maintenance - Periodically & Semi-Annually

Periodic and 6-month checks for the owner, including system components.

Owner Maintenance - End of Season

Tasks for the owner to perform at the end of the heating season.

Maintenance Procedures

Boiler Servicing and Maintenance Requirements

Annual inspection and general maintenance by a qualified technician for efficiency and reliability.

Boiler Area Inspection

Checking the boiler area for combustible materials and air contaminants.

Gauge and Piping Checks

Inspecting pressure/temperature gauge, vent piping, and air piping for issues.

Relief Valve and Condensate System Checks

Inspecting the relief valve for leaks and the condensate drain system.

Condensate System Maintenance

Condensate Trap Inspection and Cleaning

Procedures for cleaning and inspecting the condensate trap to avoid flue gas emission.

Condensate Disposal Guidelines

Proper methods for disposing of slightly acidic boiler condensate.

Specific Maintenance and Operational Checks

Air Vent and Low Water Cutoff Checks

Inspecting air vents for leaks and testing the low water cutoff function.

Boiler Piping and Relief Valve Operation

Inspecting gas/water piping for leaks and operating the relief valve.

Boiler Shutdown Procedure

Instructions for safely shutting down the boiler, especially for non-year-round use.

Operating Instructions and Safety

Essential Safety Warnings Before Operation

Critical safety information regarding fire, explosion, and gas before operating the appliance.

Gas Leak Detection and Response

Procedures for handling suspected gas leaks, including immediate actions.

Boiler Startup Procedure

Step-by-step guide to safely start the boiler using the ignition device.

Boiler Gas Shutdown Procedure

Instructions for turning off the gas supply to the appliance.

Control Panel and Operation

Cadet Heating Boiler Control Module Overview

Explanation of the control module used to set temperatures and monitor boiler operation.

Control Panel Indicators Explained

Description of the display screen, buttons, and indicators on the control panel.

User Programming Sequence

Boiler Unit ON/OFF Control

How to turn the boiler unit on or off using the control panel's UP button.

Navigating User Parameters

Steps for entering user parameters and navigating settings.

Setting Space Heat and DHW Modes

How to adjust temperature setpoints for space heating and domestic hot water.

Control Parameters and Access Modes

Temperature Units (°C/°F) Configuration

How to configure the control to display temperature in Celsius or Fahrenheit.

Space Heat (SH) Temperature Settings

Adjusting the Space Heat Demand Temperature via parameter u02.

DHW Tank and Outdoor Temperature Setpoints

Adjusting DHW Setpoint (u03) and SH Setpoint at Minimum Outdoor Temperature (P01).

Access Modes and Saving Parameters

How to access user/installer modes and save programming changes.

Error Codes and Troubleshooting

Lockout Codes Explanation

Explanation of various lockout codes (E00-E23) indicating boiler faults.

Blocking Codes Explanation

Explanation of blocking codes (b01-b06) related to operational limits.

Notification Codes Explanation

Explanation of notification codes (n01-n09) for ongoing operational status.