Lochinvar 402 - 2072 service manual Maintenance

Copper-fin II/IIE Boiler and Water Heater Service Manual

2 Maintenance

￿WARNING

￿WARNING

￿WARNING

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 should be inspected annually only by a qualified service technician. In addition, the maintenance and care of the appliance designated in Table 2A and explained on the following pages must be performed to assure maximum appliance efficiency and reliability. Failure to service and maintain the appliance and system could result in equipment failure.

Electrical shock hazard – Turn off power to the appliance before any service operation on the appliance except as noted otherwise in this instruction manual. Failure to turn off electrical power could result in electrical shock, causing severe personal injury or death.

Address reported problems

1.Inspect any problems reported by the owner and correct before proceeding.

Inspect appliance area

1.Verify that appliance area is free of any combustible materials, gasoline and other flammable vapors and liquids.

Inspect appliance interior

1.Remove the outer access panels and inspect the interior of the appliance.

2.Vacuum any sediment from inside the appliance and components. Remove any obstructions.

Check all piping for leaks

Combustion air filter

This appliance has a standard air filter located at the combustion air inlet at the rear of the appliance. This filter helps ensure clean air is used for the combustion process. Check this filter every month and replace. The filter size on the 500,000 - 750,000 Btu/hr models is 12" x 12" x 1" and 16" x 16" x 1" on the 990,000 - 2,070,000 Btu/hr models. You can find these commercially available at any home center or HVAC supply store. Do not use pleated filters.

Check water system

1.	Verify all system components are correctly installed and
	operational.
2.	Check the cold fill pressure for the system. Verify it is
	correct (must be a minimum of 12 PSI).

￿WARNING

Eliminate all system or appliance leaks. Continual fresh makeup water will reduce appliance life. Minerals can build up in sections, reducing heat transfer, overheating heat exchanger, and causing heat exchanger failure. Leaking water may also cause severe property damage.

3.	Watch the system pressure as the boiler heats up (during
	testing) to ensure pressure does not rise too high.
	Excessive pressure rise indicates expansion tank sizing or
	performance problem.
4.	Inspect automatic air vents and air separators. Remove
	air vent caps and briefly press push valve to flush vent.

1.Inspect all water and gas piping and verify to be leak free.

2.Look for signs of leaking lines and correct any problems found.

3.Check gas line using the procedure found in the Gas Connections of the Installation and Operation Manual.

Flue vent system and air piping

1.Check for gastight seal at every connection, seam of air piping, and vent piping periodically inspected by a qualified service agency.

￿WARNING Venting system must be sealed gastight to prevent flue gas spillage and carbon

Replace caps. Make sure vents do not leak. Replace any

leaking vents.

Check expansion tank (if provided)

1.Expansion tanks provide space for water to move in and out as the heating system water expands due to temperature increase or contracts as the water cools. Tanks may be open, closed, diaphragm or bladder type. See the Water Connections Section of the Installation and Operation Manual for suggested best location of expansion tanks and air eliminators.

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monoxide emissions, which will result in severe personal injury or death.