HTP MC120 - Manual (Page 6)

6
LP-180 REV. 2.4.14
B. OWNER MAINTENANCE
Periodically

Check area around the appliance.

Check and remove any blockage from the outdoor exhaust vent and intake pipe terminations. DO NOT perform this
maintenance if exhaust vent and intake pipe terminations are in difficult to reach locations.

Check the temperature/pressure gauge.
Monthly

Check exhaust vent and intake piping.

Check exhaust vent and intake pipe bracing. Ensure bracing is undamaged and in good condition.

Check the pressure relief valve.

Check the condensate drain system.

If applicable, check the condensate neutralizer and ensure it is full of condensate neutralizing marble chips.
Every 6 Months
Check appliance piping and gas supply piping for corrosion or signs of potential leakage.
PART 4 – MAINTENANCE PROCEDURES
The appliance must be inspected and serviced annually, preferably at the start of the heating season, by a qualified service technician.
In addition, the maintenance and care of the appliance as outlined in this manual must be performed by the user/owner to assure
maximum efficiency and reliability. Follow the maintenance procedures given throughout this manual. Failure to perform the service and
maintenance or follow the directions in this manual could damage the appliance or system components, resulting in substantial property
damage, severe personal injury, or death.
A. DAILY MAINTENANCE
Check the Surrounding Area
To prevent the potential of substantial property damage, severe personal injury, or death, eliminate all the materials listed in Table 1
from the area surrounding the appliance and the vicinity of the combustion air intake. If contaminates are found:

Remove products immediately from area.

If contaminates have been there for an extended period, call a qualified service technician to inspect the appliance for possible
damage from acid corrosion.
If products cannot be removed, immediately call a qualified service technician to re-pipe the combustion air intake piping away from the
contaminated areas.
Combustible/Flammable Materials
Do not store combustible materials, gasoline, or other flammable vapors or liquids near the appliance. If found, remove these materials
immediately.
Air Contaminates
If allowed to contaminate combustion air, products containing chlorine or fluorine will produce acidic condensate that will cause
significant damage to the appliance. Read the list of potential contaminates and areas likely to have these contaminates in Table 1, Part
2. If any of these contaminates are in the room where the appliance is located, or combustion air is taken from one of the areas listed,
the contaminates must be removed immediately or the combustion air intake must be relocated to another area.
Check Exhaust Vent and Intake Pipe Terminations
Verify that the appliance exhaust vent and intake pipe terminations are clean and free of obstructions. Remove any debris from the
exhaust vent and intake pipe openings. If removing the debris does not allow the appliance to operate correctly, contact your qualified
service technician to inspect the appliance and the vent system.
Check Temperature Display and Pressure Gauge

Ensure the pressure reading on the gauge does not exceed 25 psig. Higher pressure readings may indicate a problem with the
expansion tank.

Ensure the temperature on the LED display panel does not exceed 180
o
F. Higher temperature readings may indicate a
problem with the thermostat operating controls.

Contact a qualified service technician if problem persists.