Lochinvar 151 operation manual Maintenance

Installation & Operation Manual

12 Maintenance

￿WARNING

￿WARNING

￿WARNING

Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the water heater. Failure to perform the service and maintenance could result in damage to the water heater 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 water heater should be inspected annually only by a qualified service technician. In addition, the maintenance and care of the water heater designated in Table 12A and explained on the following pages must be performed to assure maximum water heater efficiency and reliability. Failure to service and maintain the water heater and system could result in equipment failure.

Electrical shock hazard – Turn off power to the water heater before any service operation on the water heater 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 water heater area

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

2.Verify that air intake area is free of any of the contaminants listed in Section 1 - Determine Water Heater Location. If any of these are present in the water heater intake air vicinity, they must be removed. If they cannot be removed, reinstall the air and vent lines per this manual and the Armor Water Heater Service Manual.

Inspect water heater interior

1.Remove the front access cover and inspect the interior of the water heater.

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

Clean condensate trap

1.Inspect the condensate drain line, condensate PVC fittings, and condensate trap.

2.Remove the PVC cap retaining screw from the PVC cap (FIG. 12-1).

3.Remove the 2 inch PVC cap with the switch located at the top of the trap (FIG. 12-1).

4.Remove any sediment in the trap.

5.Fill with fresh water until the water begins to pour out of the drain.

6.Replace the cap. Press the cap onto the trap until the cap makes contact with the drain.

7.Replace the retaining screw.

Figure 12-1Condensate Trap

RETAINING

SCREW

2” PVC CAP WITH

BLOCKED DRAIN SWITCH

PVC TEE ASSEMBLY (FACTORY SUPPLIED)

CONDENSATE FROM	TO FLOOR
HEAT EXCHANGER
	DRAIN

￿ WARNING	The condensate trap must be filled with water
	during all times of water heater operation to
	avoid flue gas emission from the condensate
	drain line. Failure to fill the trap could result
	in severe personal injury or death.

Check all piping for leaks

￿WARNING Eliminate all system or water heater leaks. Leaking water may cause severe property

damage.

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 Section 7 - Gas Connections.

Flue vent system and air piping

1.Visually inspect the entire flue gas venting system and air piping for blockage, deterioration or leakage. Repair any joints that show signs of leakage. Verify that air inlet pipe is connected and properly sealed.

2.Verify that water heater vent discharge and air intake are clean and free of obstructions.

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