State EPX 80 DHPT - Manual (Page 17)

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4. Remove the access cover(s), then remove the foam
insulation block.
5. Remove the protective plastic cover(s) over the
elements from their attachment point.
6. Disconnect the electrical wires from the heating
element(s) by loosening the screws (Figure 13).
Remove the screw-in element(s) by turning the
element(s) counterclockwise with a 1-1/2 inch socket
wrench. Remove the existing gasket(s).
7. Clean the area where the gasket(s) fits to the tank
and internal threads. If you are replacing the bottom
element, remove any accumulated sediment on the
bottom of the tank.
8. Make sure the replacement element(s) has the correct
voltage and wattage rating by matching it to the rating
plate on the water heater. Position the new gasket(s)
on the element and insert it into the water heater tank
(Figure 14).
NOTE: Apply a light coat of hand dishwashing soap
and water to the gasket. Tighten the element by turning
it clockwise until secure.
9. Close the drain valve and open the nearest hot water
faucet. Then open the cold water shut off valve and
allow the tank to fill completely with water. To purge
the lines of any excess air and sediment, keep the hot
water faucet open for 3 minutes after a constant flow of
water is obtained.
10. Check for leaks around the element(s).
11. Reconnect the electrical wires to the element and
securely tighten the screws (See Figure 13).
12. Replace the protective plastic cover(s) removed earlier.
Make sure the cover(s) are securely engaged on the
attachment point(s).
13. Replace the foam block(s) and access cover(s).
14. Although this water heater is equipped with “Dry Fire”
protection circuitry, be sure tank is completely filled with
water before applying electrical power to the water heater.
15. Reconnect electrical power to the water heater at the
circuit breaker/fuse box.
16. Press the power button to turn the water heater on. Set
the desired water temperature and operating mode.
NOTE: The water heater will conduct a system
diagnostic (approximately 8 minutes) prior to operation.
Screws
Wires
Element
Figure 13
Screw-in
Element
Figure 14
Gasket
Spud
Routine Preventive Maintenance
At least monthly, a visual inspection should be made of the
following:
• Air Filter (Remove and inspect, clean if needed, and
reinstall).
• Condensate drain pan and condensate lines.
• The lower metal drain pan for standing water which may
indicate a clogged condensate drain pan, condensate
lines, or plumbing leak.
• Leaking or damaged water piping.
• Presence of corrosive materials in the installation area.
• Presence of combustible materials near the water heater.
• After servicing this water heater, check to make sure it
is working properly. (See “Operating Your Water Heater”
section of this manual.)
IMPORTANT: If you lack the necessary skills required to
properly perform this visual inspection, you should not
proceed, but get help from a qualified person.
Cleaning the Heat Pump
Air Filter Cleaning/Replacement
IMPORTANT: Before attempting to clean or replace the air
filter press the power button to place the water heater in
Standby Mode and turn-off power to the water heater at the
circuit breaker/fuse box.
1. Locate the screw securing the filter panel to the heat
pump shroud and loosening it.
2. Remove (slide) the filter from the unit.
3. If you are replacing the filter skip to step 4. To clean the
filter use a vacuum with a hose attachment to remove
any dust or debris.
4. Place the new or cleaned filter into the water heater
and secure the filter to the shroud with the screw
loosened earlier.
NOTE: The guides/slots when inserting the filter into
the water heater.
5. Restore power to the water heater and press the
power button to turn the water heater on. NOTE: the
water heater will conduct a system diagnostic prior to
operation.
Inspection/Cleaning of the Condensate
Drain Pan & Condensate Drain Lines
IMPORTANT: Before attempting to clean or replace the
condensate drain pan or lines press the power button to
place the water heater in Standby Mode and shut-off power
to the water heater at the circuit breaker/fuse box.
1. Remove the access panel (fan side) by loosening the
screws securing it to the unit.
2. Check the condensate drain pan and drain lines for any
dirt or debris that might interfere with proper drainage.
Wipe out any dirt or debris with a damp cloth.
3. Once the condensate drain pan and lines have been
inspected/cleaned, secure the access panel to the water
heater.
4. Restore power to the water heater and press the power
button to turn the water heater on.
NOTE: The water heater will conduct a system diagnostic
prior to operation.