Set Point Lockout; Water Pressure Switch Adjustment - Air Energy AE-Ti Manual De Instalación Y Operación

5.5

Set Point Lockout

Make sure the control is in the ON mode (POOL
or SPA). Press and hold the Up and Down buttons for
5 seconds. The set point will be locked and the control
will operate in the mode it was in when the Set Point
Lockout occurred. If an attempt to change the set point
is made while the control is in Set Point Lockout, the
control will display SET POINT LOCKED . To unlock
the Set Point Lockout, press and hold the Up or Down
buttons for 5 seconds. The unit will display SET POINT
UNLOCKED .
5.6

Water Pressure Switch Adjustment

CAUTION
The water pressure switch should be
adjusted to turn the heater off when the pump
is off. Setting the switch to close at too low of
a fl ow can damage the appliance. Adjust the
switch to turn the heater off, not on.
The pressure switch is preset at the factory for
activation at 2 psi (14 kPa). This is the minimum
setting for the water pressure switch and works for
all basic installations as shown previously in Section
3.1 and Section 3.5 in this manual. Only adjust the
water pressure switch if the heat pump does not
operate when the proper flow is applied to unit or if
the heat pump does not shut off when the filter pump
is off. Occasionally, unusual plumbing configurations
or necessary restrictions in the plumbing may cause
pressure sensing problems. In these rare situations, the
plumbing system configuration may require adjustment
of the water pressure switch.
Adjustment of the pressure switch may be
necessary if any part of the filter system piping is 1 m or
more above the top of the heat pump jacket.
Do not adjust the pressure switch if the heat pump
is installed more than 3,5 m above or 1,5 m below
the pool surface. Consult your local Air Energy™
representative for recommendations.
On some installations, the piping from the heat
pump to the pool is very short. The back pressure
could be too low to trigger the pressure switch. If this
happens, it may be necessary to install a directional
fitting or elbows where the return line enters the
pool. This will increase back pressure enough for the
heat pump to operate properly. If this configuration
is necessary, be sure to check that the system flow is
above the minimum requirement of 6
direction fitting or elbow has been installed.
Make sure the pool filter is clean before making
any pressure switch adjustment: A dirty filter will
restrict the water flow and the pressure switch cannot be
adjusted properly.
3
m /h after the
To adjust the pressure switch:
1. Be sure that all valves in the system are set to
allow water fl ow through the heat pump. Start the
fi lter pump.
2. Set the heat pump control to call for heat. Set the
heat pump control to the POOL HEAT mode.
3. If the heat pump control displays "FAULT-LOW
WATER FLOW", then the fl ow in the system may
be below the minimum fl ow of 110 lpm (6
needed for the safe operation of the heat pump.
Investigate and correct any fl ow problems before
adjusting the water pressure switch.
4. Remove the heat pump's control access panel. The
water pressure switch is located in the lower left
corner of the control compartment.
5. After confi rming the fl ow rate is at a minimum
of 110 lpm, slowly rotate the thumb wheel on
the water pressure switch in a counterclockwise
direction until the "FAULT-LOW WATER
FLOW" indicator disappears from the control
display. Remember that there is a time delay
before the heat pump compressor will start.
6. Once the heat pump is running, turn off the fi lter
pump. The heat pump should turn off immediately.
7. If the heat pump continues to operate when the
fi lter pump is off, turn the thumb wheel on the
water pressure switch in a clockwise direction
until "FAULT-LOW WATER FLOW" is
displayed on the control and the heat pump shuts
down.
8. Check the setting of the water pressure switch by
starting and stopping the fi lter pump and checking
the control display and operation of the heater
between each fl ow change.
9. If the water pressure switch cannot be adjusted
to accommodate the conditions listed above,
an external fl ow switch must be added to the
plumbing system to ensure that the heat pump will
not operate without the proper fl ow through the
heat exchanger.
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3
m /h
)