48
Maintenance Schedule
SECTION XII - Maintenance Schedule
Service Technician
At least on an annual basis the following main-
tenance should be performed by a qualified ser-
vice technician:
General
•
Attend to any reported problems.
•
Inspect the interior of the combustion
chamber; clean and vacuum if necessary.
•
Clean the condensate trap in the vent
system and fill with fresh water.
•
Check for leaks; water, gas, flue and
condensate.
•
Verify flue vent piping and air inlet pip-
ing are in good condition and sealed
tight.
•
Check primary system water pressure/
primary system piping/primary expan-
sion tank.
•
Check domestic water pressure/domes-
tic system piping/domestic thermal
expansion tank.
•
Check ignition electrode (sand off any
white oxide; clean and reposition).
•
Check all control wiring and connections.
•
Check burner flame pattern (stable and
uniform) and flame.
Additional items if combustion or performance
is poor:
•
Clean baffles and flue ways.
•
Remove burner assembly and clean
burner head using compressed air only.
Once the maintenance items are completed,
review the service with the owner.
Owner Maintenance
Periodically:
•
Check the area around the appliance.
•
Check the combustion air inlet and ven-
tilation openings for blockage.
•
Check the pressure gauge.
•
Check the operation of the domestic
mixing valve.
Monthly:
•
Check vent piping.
•
Check combustion air inlet piping.
•
Check the pressure relief valve.
•
Check the temperature/pressure relief
valve.
•
Check the vent condensate drain system.
•
Check the automatic air vents in the pri-
mary system.
Every 6 months:
•
Check both primary piping and gas
supply piping for corrosion or potential
signs of leakage.
•
Operate the pressure relief valve.
•
Operate the temperature/pressure relief
valve.
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 MODU-
LATING DELTA or in system compo-
nents, resulting in severe personal
injury, death or substantial property
damage.
WARNING
