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MAINTENANCE AND SERVICE
• Turn off the electrical power supply and close the manual gas shutoff valve and
the manual water control valve before servicing.
• Failure to do so could result in severe personal injury, or death.
WARNING
The following maintenance is required for the proper operation of water heaters.
• Regularly ensure that the area around the water heater, vent termination, and air intake are free from dust,
debris, and other contaminants.
• Be sure that all openings for combustion and ventilation air are not blocked.
• The venting system should be checked annually for any leaks, corrosion, blockages or damage.
• The screen of the termination (if it is installed) must be inspected regularly. Remove any blockages or debris
including dust, dirt, and snow/ice.
• Keep the area around the water heater clear. Remove any combustible materials, gasoline or any flammable
vapors and liquids.
• Clean the cold-water inlet filter. (Refer to Inlet Water Filter Cleaning in the following.)
• If the relief valve discharges periodically, it may be due to thermal expansion in a closed water supply system.
Contact a service technician to correct this issue.
• The pressure relief valve must be manually operated periodically to check for correct operation. Before
operating the valve manually, check that it will discharge in a place for secure disposal.
• Condensate drain system must be inspected regularly to make sure it drains properly and accordance with
local code or the part manufacturer’s instructions. (Refer to pages 34 and 35.)
• The burner should be checked annually for dust, lint, grease or dirt by a licensed technician.
• Visually check the burner flames (see below) through the burner window in the burner assembly located at
the middle of the water heater.-
Satisfactory
Blue flame
Unsatisfactory
Flame
blowing up
Unsatisfactory
Red or Yellow
flame
The manufacturer recommends having the unit checked once a year or as necessary by a licensed technician. If
repairs are needed, any repairs should be done by a licensed technician.
INLET WATER FILTER CLEANING
If this filter is clogged, water will not be supplied to the water heater properly.
1. Close the manual gas shutoff valve.
2. Turn off power to the unit and wait a couple of seconds. Turn on again.
3. Wait 30 seconds, and then turn off power to the unit.
4. Close the
inlet
water valve. If the heater is part of an common vent System, close the inlet and outlet water
valves to isolate the heater. Then proceed to step 5.
5. Open all hot water taps in the house. When the residual water flow has ceased, close all hot water taps.
6. Have a bucket or pan to catch the water from the unit’s large drain plug with filter. If Isolation valves are
installed, open the drains to drain the water. If isolation valves are not installed,
unscrew
the large drain
plugs to drain all the water out of the unit. Do not lose the o-ring that will be on the large drain plugs.
7. Wait a few minutes to ensure all water has completely drained from the unit.
8.
Clean the filter
: Check the water filter located within the cold inlet. With a tiny
brush, clean the water filter of any debris which may have accumulated and reinsert
the filter back into the cold water inlet.
9. Securely screw the drain plug back into place.
Hand- tighten only
.
Maintenance and service
Owner's Guide
Summary of Contents for 240HX3
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