State SPX 50 DHPT - Manual (Page 15)

15
MAINTENANCE OF YOUR WATER HEATER
Temperature and Pressure
Relief Valve
Manually operate the temperature and pressure relief valve
once a year to make sure it is working properly (Figure 14).
To prevent water
damage, the valve
must be properly
connected to a
discharge line which
terminates at an
adequate drain.
Standing clear of the
outlet (discharged
water may be
hot), slowly lift and
release the lever
handle on the
temperature and
pressure relief valve to allow the valve to operate freely and
return to its closed position. If the valve fails to completely
reset and continues to release water, immediately
disconnect the electrical power, close the cold water inlet
valve and call a qualifi ed person.
Figure 14
T emperature and Pressure
Relief V alve
Manual Relief
Va lv e
Discharge line to drain
Explosion Hazard
If the temperature and pressure relief valve
is dripping or leaking, have a qualified
person replace it.
Examples of a qualified person include:
licensed plumbers, authorized electric
company personnel, and authorized service
personnel.
Do not plug valve.
Do not remove valve.
Failure to follow these instructions can
result in death or explosion.
WARNING
Routine Maintenance
Routine visual inspections should be made of the following:
•
Remove and inspect the air filter, clean if needed, and
reinstall - quarterly.
• Condensate drain pan and condensate lines - annually.
• The lower metal drain pan for standing water which may
indicate a clogged condensate drain pan, condensate
lines, or plumbing leak - annually.
• Leaking or damaged water piping - annually.
• Presence of corrosive materials in the installation area -
annually.
• Presence of combustible materials near the water heater
- annually.
• 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.
Air Filter Maintenance
The heater will monitor the heat pump operation status
and indicate whether the filter should be cleaned. If the
User Interface Module displays “SF” code, this indicates
the filter should be cleaned or replaced with the following
process (See exploded view of unit on last page for air filter
location).
IMPORTANT: Before attempting to clean or replace the
air fi lter, turn-off power to the water heater at the circuit
breaker/fuse box.
1. Take the two tabs on the air filter and remove (slide) it
from the top cover of the unit.
2. 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.
3. Place the new or cleaned filter into the water heater.
4. Restore power to the water heater and turn the water
heater on. NOTE: the water heater will conduct a
system diagnostic prior to operation.
Condensate Drain Maintenance
IMPORTANT: Before attempting to clean or replace the
condensate drain pan or lines, shut-off power to the water
heater at the circuit breaker/fuse box.
1. Remove the top jacket 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 top jacket to the water
heater.
4. Restore power to the water heater and turn the water
heater on.
NOTE:
The water heater will conduct a system diagnostic
prior to operation.