Lochinvar KNIGHT 51-211 - Manual (Page 29)

2
Maintenance
29
Service Manual
Follow the Service and maintenance procedures given throughout this manual and in component literature
shipped with the boiler. Failure to perform the service and maintenance could result in damage to the boiler 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 boiler should be inspected annually only by a qualified service technician. In addition, the maintenance and
care of the boiler designated in Table 2-1 and explained on the following pages must be performed to assure
maximum boiler efficiency and reliability. Failure to service and maintain the boiler and system could result in
equipment failure.
Electrical shock hazard – Turn off power to the boiler before any service operation on the boiler 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 boiler area
1. Verify that boiler 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 of the Knight Wall Mount Installation
and Operation Manual. If any of these are present in the
boiler intake air vicinity, they must be removed. If they
cannot be removed, reinstall the air and vent lines per this
manual and the Knight Wall Mount Installation and
Operation Manual.
Inspect boiler interior
1. Remove the front access cover and inspect the interior of
the boiler.
2. Vacuum any sediment from inside the boiler and
components. Remove any obstructions.
Clean condensate trap
1. Remove the clean out cap on the bottom of the trap. Let the
condensate and any debris drain out.
2. Fill with fresh water until the water begins to pour out of the
drain.
3. Replace the clean out cap and resume operation.
Eliminate all system or boiler leaks.
Continual fresh makeup water will reduce
boiler 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.
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 of the Knight Wall Mount Installation and
Operation Manual.
Check all piping for leaks
The condensate trap must be filled with
water during all times of boiler operation to
avoid flue gas emission from the condensate
drain line. Failure to fill the trap could result
in severe personal injury or death.
ƽ WARNING
ƽ WARNING
ƽ WARNING
ƽ WARNING
ƽ WARNING
Figure 2-1 Condensate Trap