Laars Mighty Therm HH 1200

To Next Page

FOR YOUR SAFETY: This product must be installed and serviced by a professional service technician,

qualified in hot water boiler installation and maintenance. Improper installation and/or operation could

create carbon monoxide gas in flue gases which could cause serious injury, property damage, or death.

Improper installation and/or operation will void the warranty.

WARNING

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.

Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or

any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a nearby 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 gas

supplier.

H0117400E

Installation and Operation

Instructions for

Mighty Therm

Hydronic Boilers

Models HH and PH

Sizes 500-1825

These instructions are to be stored in the pocket provided on the boiler

Installation and Operation Instructions Document 1049E

Need help?

Do you have a question about the Laars Mighty Therm HH 1200 and is the answer not in the manual?

Summary

Installation

2 A. Boiler Placement

Specifies clearances, surface requirements, and location considerations for boiler installation.

2 B. Installation of Indoor Boilers

2 B-1. Combustion Air Supply

2 B-2. Venting

Details requirements for flue outlet connection, vent pipe installation, and draft diverters.

2 C. Installation of Outdoor Boilers

2 D. Gas Supply and Piping

Covers gas type verification, piping requirements, and sediment trap installation.

2 E. Electrical Wiring

Addresses electrical grounding requirements and wiring connections according to codes.

2 F. Water Piping of System

2 G. Filling Fully-Connected System

Operation

3 B. Initial Start-Up

Covers safe lighting procedures, gas valve checks, and pilot flame response time verification.

3 C. To Start Up System

Maintenance

Troubleshooting and Analysis of Service Problems

3. BOILER WILL NOT FIRE.

Lists possible causes and solutions for the boiler failing to ignite or start, covering power, gas, and controls.

4. PRESSURE RELIEF VALVES LEAKING INTERMITTENTLY OR STEADILY.

5. BOILER IS POUNDING, KNOCKING OR EMITTING STEAM FROM RELIEF VALVES.

6. SOOT IN FLUEWAYS OR IN TUBES, OR NOXIOUS FUMES INDICATIVE OF BAD COMBUSTION.

Details issues related to poor combustion, such as inadequate air supply or venting problems.