Lochinvar 2072, 402 Check all wiring, Check control settings, Perform start-up and checks

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

2 Maintenance

Check all wiring

1.Inspect all wiring, making sure wires are in good condition and securely attached.

Check control settings

1.Set the SMART SYSTEM control module display to Parameter Mode and check all settings. See Section 1 of this manual. Adjust settings if necessary. See Section 1 of this manual for adjustment procedures.

2.Check settings of external limit controls (if any) and adjust if necessary.

Perform start-up and checks

1.Start appliance and perform checks and tests specified in Start-up Section of the Installation and Operation Manual.

2.Verify cold fill pressure is correct and that operating pressure does not go too high.

Check burner flame

Visually check main burner flames at each start-up after long shutdown periods or at least every six months. The burner viewports are located on either end of the appliance.

￿WARNING The area around the burner viewport is hot and direct contact could result in burns.

Figure 2-1_Flame Pattern Illustration

NORMAL YELLOW TIP

Check flue gas passageways

Any sign of soot around the refractory, at the burners, or in the areas between the fins on the copper heat exchanger indicates a need for cleaning. The following cleaning procedure must only be performed by a qualified serviceman or installer. Proper service is required to maintain safe operation. Properly installed and adjusted units seldom need flue cleaning.

NOTICE	All gaskets/sealants on disassembled
	components or jacket panels must be replaced
	with new gaskets/sealants on reassembly.
	Gasket and sealant kits are available from
	your distributor.

￿CAUTION When a Category IV vent system is disconnected for any reason, the flue must

be reassembled and resealed according to the vent manufacturer’s instructions.

Inspect and clean burner

The burner should be removed for inspection and cleaned on an annual basis. An appliance installed in a dust or dirt contaminated environment may require cleaning of the burner on a 3 to 6 month schedule or more often, based on severity of the contamination. The fan assisted combustion process may force airborne dust and dirt contaminants, contained in the combustion air, into the burner. With sustained operation, non-combustible contaminants may reduce burner port area, reduce burner input or cause non-warrantable damage to the burners.

YELLOW FLAME FLAME LIFT

Normal Flame: A normal flame at 100% of burner input is blue, with slight yellow tips, a well defined flame and no flame lifting.

Yellow Tip: Yellow tipping can be caused by blockage or partial obstruction of air flow to the burner.

Yellow Flames: Yellow flames can be caused by blockage of primary air flow to the burner or excessive gas input. This condition MUST be corrected immediately.

Lifting Flames: Lifting flames can be caused by over firing the burner, excessive primary air or high draft.

If improper flame is observed, examine the venting system, ensure proper gas supply and adequate supply of combustion and ventilation air.

Use extreme care when operating an appliance for temporary heat during new construction. Airborne contaminants such as dust, dirt, concrete dust or drywall dust can be drawn into the burner with the combustion air and block the burner port area. An external combustion air filter is provided with the appliance. This filter helps ensure clean air is used for the combustion process. Check this filter every month and replace when it becomes dirty. The burner of an appliance used for temporary heat without a combustion air filter installed will probably require a thorough cleaning before the unit is placed into normal service.

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