Seasonal Start-Up Or Annual Check; System Start-Up; Summer Shutdown; Freeze Protection - Raypak 5350 Series Installation & Operating Instructions Manual

System Start-Up

1. Verify that the Digital Board is displaying a temper-
ature and the pool pump is running and water is
circulating properly.
2. Verify that the Board is programmed so that the
desired temperature of the Pool and Spa is higher
than the displayed current water temperature.
3. Allow the heat pump pool heater to operate for a
few minutes to stabilize operating pressures and to
allow various component temperatures to normal-
ize.
4. Verify that the discharge air temperature is approx-
imately 8°–10°F cooler than the air entering the
unit. If not, see the Troubleshooting Section.
Seasonal Start-Up or Annual
Check
NOTE: At the beginning of the heating season, or
whenever the pool water temperature is to be raised
several degrees, the pool pump and heat pump pool
heater may need to operate continuously for several
days. During summer months, only a few hours per
day may be necessary, or none at all.
1. Remove leaves, pine needles, etc., from the evap-
orator coil. Clean the coil by gently applying a mild
solution of household liquid soap and water.
2. Gently rinse the coil with water; DO NOT use high
pressure.
3. Backwash or otherwise clean the pool filter. If nec-
essary, clean the skimmer basket and pump
strainer.
NOTE: If the pool pump and heat pump pool heater
shut OFF before the water temperature is raised to
the desired level, you must lengthen the running time
of both. To do this, reset the time clock dial for the
longer running time, or manually operate the pump
with the timer override switch. Since the heat pump
pool heater capacity and efficiency are both greater
at higher ambient air temperatures, run time should
be set to take advantage of all daylight hours, when
the air is generally warmer.
4. Set the valves to ensure proper water flow through
the unit.

Summer Shutdown

If you do not plan to use the heat pump pool heater
during the summer months, secure and protect it as
follows:
1. Turn the unit circuit breaker or disconnect switch to
OFF.
2. Leave the valves set the way they are unless addi-
tional circulation is required. DO NOT stop all flow
through the heat pump pool heater.
3. IMPORTANT: Remember to reset the valves
before the next heating season, or the unit will not
operate properly.

Freeze Protection

If the unit is installed in a location subject to freezing
conditions, it is important to protect the water circuit
from freezing, just as should be done for the pump and
filter.

System Drain-Down

1. Turn the unit circuit breaker or disconnect switch
to OFF.
2. With the pool pump OFF, close the external shut-
off valves and loosen the inlet and outlet water
unions to allow water to drain. Use a Wet/Dry Vac
or air pressure to remove excess water.
3. Loosely re-attach the unions.
4. Cover the unit with a waterproof cover.

Continuous Pump Operation

It is also possible in some areas to prevent unit freeze
damage by operating the pump continuously during
freezing weather. However, this results in significantly
higher pump operating costs. Further, if a sustained
power failure occurs, the unit MUST be drained any-
way, or freeze damage could result.
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