Lochinvar CBN045 Solution Boiler Natural Gas User Manual

Lochinvar CBN045 Solution Boiler Natural Gas

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

Save this manual for future reference.

Hazard definitions

The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product.

DANGER indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury.
WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury.
CAUTION used without the safety alert symbol indicates a potentially hazardous situation which, if not avoided, may result in property damage.
NOTICE indicates special instructions on installation, operation, or maintenance that are important but not related to personal injury or property damage.

Please read before proceeding

This is a gas appliance and should be installed by a licensed electrician and/or certified gas supplier. Service must be performed by a qualified service installer, service agency or the gas supplier.

 If the information in these instructions is not followed exactly, a fire or explosion may result causing property damage, personal injury, or death.

This appliance MUST NOT be installed in any location where gasoline or flammable vapors are likely to be present, unless the installation is such to eliminate the probable ignition of gasoline or flammable vapors.

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.

Warranty –

Installation and service must be performed by a qualified service installer, service agency or the gas supplier.

Factory warranty (shipped with unit) does not apply to units improperly installed or improperly operated.

Experience has shown that improper installation or system design, rather than faulty equipment, is the cause of most operating problems.

1. Excessive water hardness causing a lime/scale build-up in the copper tube is not the fault of the equipment and is not covered under the manufacturer’s warranty (see Water Treatment and Water Chemistry).
2. Excessive pitting and erosion on the inside of the copper tube may be caused by too much water velocity through the tubes and is not covered by the manufacturer’s warranty (see Boiler Flow Rates and Temperature Rise for flow requirements).

 Improper installation, adjustment, alteration, service or maintenance can result in severe personal injury, death, or substantial property damage. Refer to this manual for assistance or additional information, consult a qualified installer, service agency or the gas supplier.

Checking equipment –

Upon receiving equipment, check for signs of shipping damage. Pay particular attention to parts accompanying the appliances which may show signs of being hit or otherwise being mishandled. Verify total number of pieces shown on the packing slip with those actually received. In case there is damage or a shortage, immediately notify the carrier.

Do not use this appliance if any part has been under water. The possible damage to a flooded appliance can be extensive and present numerous safety hazards. Any appliance that has been under water must be replaced.

This product burns gas to produce heat. The appliance must be properly installed, operated, and maintained to avoid exposure to appreciable levels of carbon monoxide and the installer is required to confirm that at least one carbon monoxide alarm is installed in the living space before the appliance is put into operation. It is important for the carbon monoxide alarms to be installed, maintained, and replaced following the alarm manufacturer’s instructions and applicable local codes.

⚠ Owner warning –

NOTE: Retain this manual for future reference.

The information contained in this manual is intended for use by qualified professional installers, service technicians, or gas suppliers. Consult your local expert for proper installation or service procedures.

 Consult and follow all local Building and Fire Regulations and other Safety Codes that apply to this installation. Consult your local gas utility company to authorize and inspect all gas and flue connections.

Your conventionally vented gas appliance must have a supply of fresh air circulating around it during burner operation for proper gas combustion and proper venting.

 Should overheating occur or the gas supply fail to shut off, do not turn off or disconnect the electrical supply to the pump. Instead, shut off the gas supply at a location external to the appliance.

 To minimize the possibility of serious personal injury, fire, or damage to your appliance, never violate the following safety rules:

1. Boilers are heat producing appliances. To avoid damage or injury, do not store materials against the appliance or the vent-air intake system. Use proper care to avoid unnecessary contact (especially children) with the appliance and vent-air intake components.
2. Never cover your appliance, lean anything against it, store trash or debris near it, stand on it or in any way block the flow of fresh air to your appliance.
3. UNDER NO CIRCUMSTANCES must flammable materials such as gasoline or paint thinner be used or stored in the vicinity of this appliance, vent-air intake system or any location from which fumes could reach the appliance or vent-air intake system.

Codes –

The equipment shall be installed in accordance with those installation regulations in force in the local area where the installation is to be made. These regulations shall be carefully followed in all cases. Authorities having jurisdiction shall be consulted before installations are made. In the absence of such requirements, the installation shall conform to the latest edition of the National Fuel Gas Code, ANSI Z223.1. Where required by the authority having jurisdiction, the installation must conform to American Society of Mechanical Engineers Safety Code for Controls and Safety Devices for Automatically Fired Boilers, ASME CSD-1. All boilers conform to the latest edition of the ASME Boiler and Pressure Vessel Code, Section IV. Where required by the authority having jurisdiction, the installation must comply with the Canadian Association Code, CAN/CGA-B149.1 and/or B149.2 and/or local codes.

This appliance meets the safe lighting performance criteria with the gas manifold and control assembly provided as specified in the ANSI standards for gas-fired appliances, ANSI Z21.13 and ANSI Z21.10.3.

Maintenance schedule

Service technician  (see the Solution Installation and Service Manual)

General:

• Address reported problems
• Inspect interior; clean and vacuum if necessary
• Check for leaks (water, gas, flue)
• Examine venting system
• Check system water pressure/ system piping/expansion tank
• Check fill water meter
• Test boiler water. When test indicates, clean system water with approved system restorer following manufacturer’s information.
• Check control settings
• Check wiring and connections
• Flame inspection (stable, uniform)
• Check flue gas passageways
• Inspect and clean the burners
• Perform start-up, check-out and performance verification per Section 6 – Startup of the Solution Installation and Service manual

If combustion or performance indicate need:

• Clean heat exchanger
• Remove and wash burners

Owner maintenance (see pages 6 – 7 for detailed instructions)

Daily|

• Check appliance area
• Check pressure/temperature gauge

---|---
Monthly|

• Check vent piping
• Check relief valve

Periodically|

• Test low water cutoff (if used)
• Reset button (low water cutoff)

Every 6 months|

• Check appliance piping (gas and water) for leaks
• Operate relief valve

End of season months|

• Shut appliance down (unless boiler used for domestic hot water)

 Follow the maintenance procedures given throughout this manual. Failure to perform the service and maintenance or follow the directions in this manual could result in damage to the appliance, resulting in severe personal injury, death, or substantial property damage.

Maintenance procedures

Appliance must be serviced and maintained

 Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the appliance. Failure to perform the service and maintenance could result in damage to the appliance or system. Failure to follow the directions in this manual and component literature could result in severe personal injury, death, or substantial property damage.

 The appliance must be inspected and started annually at the beginning of the heating season by a qualified service technician. In addition, the maintenance and care of the appliance designated on page 5 of this manual and explained on pages 6 through 7 must be performed to assure maximum appliance efficiency and reliability. Failure to service and maintain the appliance and system could result in equipment failure, causing possible severe personal injury, death, or substantial property damage.

The following information provides detailed instructions for completing the maintenance items listed in the maintenance schedule on page 5. In addition to this maintenance, the appliance must be serviced and started up at the beginning of each heating season by a qualified service technician.

Check appliance area

 To prevent potential of severe personal injury, death, or substantial property damage, eliminate all materials discussed below from the appliance vicinity and the vicinity of the appliance combustion air inlet. If contaminants are found:
Remove products immediately from the area. If they have been there for an extended period, call a qualified service technician to inspect the appliance for possible damage from acid corrosion.

If products cannot be removed, immediately call a qualified service technician to re-pipe vent and air piping and locate vent termination/air intake away from contaminated areas.

1. Combustible/flammable materials — Do not store combustible materials, gasoline or any other flammable vapors or liquids near the appliance. Remove immediately if found.
2. Air contaminants — Products containing chlorine or fluorine, if allowed to contaminate the appliance intake air, will cause acidic condensate in the boiler. This will cause significant damage to the boiler if allowed to continue.

Check pressure/temperature gauge

1. Make sure the pressure reading on the appliance pressure/ temperature gauge does not exceed 24 psi. Higher pressure may indicate a problem with the expansion tank.
2. Contact a qualified service technician if problem persists.

 Failure to inspect the vent system as noted above and have it repaired by a qualified service technician can result in vent system failure, causing severe personal injury or death.

Check vent piping

1. Visually inspect the vent piping to be sure it is unobstructed. Inspect the entire length of the vent piping to ensure piping is intact and all joints are properly sealed.
2. Call your qualified service technician if you notice any problems.

Check relief valve

1. Inspect the appliance relief valve and the relief valve discharge pipe for signs of weeping or leakage.
2. If the relief valve often weeps, the expansion tank may not be working properly. Immediately contact your qualified service technician to inspect the appliance and system.

Test low water cutoff (if installed)

1. If the system is equipped with a low water cutoff, test the low water cutoff periodically during the heating season, following the low water cutoff manufacturer’s instructions.

Reset button (low water cutoff)

1. Testing the low water cutoff shuts the unit off. Press the RESET button on the low water cutoff to turn the unit back on.

Check appliance piping (gas and water)

1. Access the appliance and perform a gas leak inspection per steps 1 through 7 of the Operating Instructions on page 8. If gas odor or leak is detected, immediately shut down the boiler and call a qualified service technician.
2. Visually inspect for leaks around water piping. Also inspect the circulators, relief valve, and fittings. Immediately call a qualified service technician to repair any leaks.

 Have leaks fixed at once by a qualified service technician. Failure to comply could result in severe personal injury, death, or substantial property damage.

Operate relief valve

1. Before proceeding, verify that the relief valve outlet has been piped to a safe place of discharge, avoiding any possibility of scalding from hot water.
    To avoid water damage or scalding due to valve operation, a metal discharge line must be connected to the relief valve outlet and run to a safe place of disposal.
   This discharge line must be installed by a qualified heating installer or service technician in accordance with the instructions in the Solution Installation and Service Manual. The discharge line must be terminated so as to eliminate possibility of severe burns or property damage should the valve discharge.

2. Read the boiler pressure/temperature gauge to make sure the system is pressurized. Lift the relief valve top lever slightly, allowing water to relieve through the valve and discharge piping.

3. If water flows freely, release the lever and allow the valve to seat. Watch the end of the relief valve discharge pipe to ensure that the valve does not weep after the line has had time to drain. If the valve weeps, lift the seat again to attempt to clean the valve seat. If the valve continues to weep afterwards, contact your qualified service technician to inspect the valve and system.

4. If water does not flow from the valve when you lift the lever completely, the valve or discharge line may be blocked. Immediately shut down the appliance. Call your qualified service technician to inspect the appliance and system.

Shut appliance down (unless boiler is used for Domestic Water)

1. Follow “To Turn Off Gas to Appliance” on page 9 of this manual.
2. Do not drain the system unless exposure to freezing temperatures will occur.
3. Do not drain the system if it is filled with an antifreeze solution.
4. DO NOT shut down boilers used for domestic water heating, they must operate year-round.

Operating instructions

Lighting Instructions for Spark Ignition Pilot Models

FOR YOUR SAFETY READ BEFORE  OPERATING

 If you do not follow these instructions exactly, a fire or explosion may result causing property damage, personal injury or loss of life.

• A. This appliance is equipped with an ignition device which automatically lights the pilot. Do not try to light the pilot by hand.

• B. BEFORE OPERATING, smell around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle to the floor.
  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.

• C. Use only your hand to turn the gas control knob. Never use tools. If the knob will not turn by hand, don’t try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.

• D. Do not use this appliance if any part has been under water. Immediately call a qualified service technician to inspect the appliance. The possible damage to a flooded appliance can be extensive and present numerous safety hazards. Any appliance that has been under water must be replaced.

Operating Instructions

1. STOP! Read the safety information first.

2. Remove the control panel door.

3. Set the thermostat to the lowest setting (OFF).

4. Turn off all electrical power to the appliance.

5. This appliance is equipped with an ignition device which automatically lights the pilot. DO NOT try to light the pilot by hand.

6. a 45,000 – 135,000 Btu/hr models, rotate the gas control knob on the gas valve clockwise to the “OFF” position.
   6b. 180,000 – 260,000 Btu/hr models, rotate the gas control knob on the gas valve clockwise to the line on the collar around the knob. Depress the knob and continue rotation to the “OFF” position.

7. Wait five (5) minutes to clear out any gas, then smell for gas, including near the floor. If you smell gas, STOP! Follow the steps in the “What To Do If You Smell Gas” section in the safety information. If you do not smell gas go on to the next step.

8. a 45,000 – 135,000 Btu/hr models, rotate the gas control knob on the gas valve counterclockwise to the “ON” position.
   8b. 180,000 – 260,000 Btu/hr models, rotate the gas control knob on the gas valve counterclockwise to the line on the collar around the knob. Allow the knob to “pop” up, and continue rotation to the “ON” position.

9. Turn on all electric power to the appliance.

10. Set the thermostat to the desired setting.

11. Re-install the control panel door.

12. If the appliance will not operate, follow the instructions “To Turn Off Gas To Appliance” and call your service technician or gas supplier.

To Turn Off Gas to Appliance

1. Set the thermostat to the OFF position.
2. Turn off all electric power to the appliance if service is to be performed.
3. a 45,000 – 135,000 Btu/hr models, rotate the gas control knob on the gas valve clockwise to the “OFF” position. Do not force.
   3b. 180,000 – 260,000 Btu/hr models, rotate the gas control knob on the gas valve clockwise to the line on the collar around the knob. Depress the knob and continue rotation to the “OFF” position. Do not force.

 Should overheating occur or the gas fail to shut off, turn off the external manual gas valve to the appliance.

Safety Shutoff Test for Spark Ignition Pilot System

1. Turn “OFF” gas supply to the appliance.
2. Turn thermostat to highest setting.
3. Turn electric power “ON”.
4. Pump relay pulls in to start pump.
5. The ignition will begin sparking at the pilot.
6. The ignition module will lock out after the trial for ignition period.
7. Immediately call a qualified serviceman or installer to repair an ignition system that fails to lock out and properly shut down burner operation.
8. After successful completion of the test, readjust the thermostat to normal setting.
9. Turn “ON” gas supply.
10. Turn power “OFF” then “ON” to reset ignition module.
11. If ignition system fails to operate properly, repair work must be performed by a qualified serviceman or installer.

Intermittent Pilot Spark Ignition System

 The ignition module is not repairable. Any modification or repairs will invalidate the warranty and may create hazardous conditions that result in property damage, personal injury, fire, explosion and/or toxic gases. A faulty ignition module must be replaced with a new module.

Customer Support

300 Maddox Simpson Parkway
Lebanon, TN 37090
615-889-8900 I Fax: 615-547-1000
www.Lochinvar.com

Revision Notes: Revision A (ECO C03746) initial release.
Revision B (ECO C12077) reflects the update of ignition timing
information on page 9.
Revision C (PCP #3000021634 / CN #500011858) reflects an update to
the service technician maintenance chart on page 5.
Revision D (PCP #3000057694 / CN #500043851) reflects an added
carbon monoxide warning on page 3.
100161678_2000017137_Rev D
09/23

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