HTP MC120 - Manual (Page 75)

75
LP-171 Rev. 4.10.14
INSPECTION ACTIVITIES DATE LAST COMPLETED
PIPING 1 st YEAR 2 nd YEAR 3 rd YEAR 4 th YEAR*
Near heater piping Check heater and system piping for any sign of leakage, make
sure they are properly supported.
Vent Check condition of all vent pipes and joints.
Gas Check Gas piping, test for leaks and signs of aging. Make sure
all pipes are properly supported.
SYSTEM
Visual
Do a full visual inspection of all system components.
Functional Test all functions of the system (Heat, Safeties)
Temperatures Verify safe settings on heater or Anti-Scald Valve
Temperatures Verify programmed temperature settings
ELECTRICAL
Connections
Check wire connections. Make sure they are tight.
Smoke and CO
detector Verify devices are installed and working properly. Change
batteries if necessary.
Circuit Breakers Check to see that the circuit breaker is clearly labeled. Exercise
circuit breaker.
CHAMBER/BURNER
Combustion Chamber
Check burner tube and combustion chamber coils. Clean
according to maintenance section of manual. Vacuum
combustion chamber.
Spark Electrode Clean. Set gap at ¼”.
Flame Probe Clean. Check ionization in uA (d7 on status menu in Start-up
Procedures). Record high fire and low fire.
CONDENSATE
Neutralizer
Check condensate neutralizer. Replace if necessary.
Condensate hose Disconnect condensate hose. Clean out dirt. Fill with water to
level of outlet and re-install. (NOTE: Verify the flow of
condensate, making sure that the hose is properly connected
during final inspection.)
GAS
Pressure
Measure incoming gas pressure ( 3.5” to 14” W.C.)
Pressure Drop Measure drop in pressure on light off (no more than 1” W.C.)
Check gas pipe for
leaks Check piping for leaks. Verify that all are properly supported.
COMBUSTION
CO/CO2 Levels
Check CO and CO2 levels in Exhaust (See Start-up Procedures
for ranges). Record at high and low fire.
SAFETIES
ECO (Energy Cut Off)
Check continuity on Flue and Water ECO. Replace if corroded.
Water Pressure Switch Check operation and for signs of leakage. Replace if corroded.
Thermistors Check wiring. Verify through ohms reading.
FINAL INSPECTION
Check list
Verify that you have completed entire check list. WARNING:
FAILURE TO DO SO COULD RESULT IN SERIOUS INJURY
OR DEATH.
Homeowner Review what you have done with the homeowner.
Table 19 - *Continue annual maintenance beyond the 4
th
year as required.