XLHP™ High Performance Heat Pump Installation and User’s Guide
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XLHP™ High Performance Heat Pump Installation and User’s Guide
AutoSet Contactor to Mechanical Timer Wiring Example
Intermatic
T104
Timer
CLOCK
MOTOR
240V
SUPPLY
GROUND
LINE 1
LINE 2
FILTER
PUMP
GROUND
AutoSet
Contactor
A
1
2
3
4
NOTES:
1. Mechanical timer is not provided with the heat pump.
2. Example only, other timers will be similarly wired.
3. Ensure that the electrical power lines are not crossed when making connections.
Notes:
1. Mechanical timer is not provided with the heat pump.
2. Example only, other timers will be similarly wired.
3. Be sure that the electrical power lines are not crossed when
making connections.
To enable the AutoSet feature:
1. Press the MENU SELECT button repeatedly until the
AutoSet screen is displayed.
2. Press the UP or DOWN arrows to toggle between the
ON and OFF options.
3. Set the interval (1-4 hours) from the Pump Start Time
menu in the Service Menu Tree.
AutoSet
Note: The XLHP™ heat pump has been tested and rated
as an aquaculture duty product, however, it is based upon
a heat pump product platform that is also used in the
swimming pool industry. The XLHP heat pump’s AutoSet
and Extend features were originally developed for use in
swimming pool applications; and they may not have any
direct uses in an aquaculture setting. If you don't need to
utilize the AutoSet or Extend features you may simply ignore
them. However, we've described the features/functionality
below in the event that you find a reason to employ them
in you aquaculture application.
The AutoSet feature periodically energizes a contactor
which can be connected to activate the filter pump. The heat
pump can now start and stop the filter pump independent
of a time clock, allowing the heat pump to circulate water
and sense water temperature. Enable this feature any time
the filter pump is off.
If the temperature is not at the desired level, the heat
pump starts and runs until the water reaches the desired
temperature. The filter pump and the heat pump will stop
when the water reaches the desired temperature.
AutoSet allows you to set the time interval between the end
of the circulation cycle and when the heat pump reactivates
the filter pump to sense the water temperature.
To use this feature:
Be sure the water circulation pump is wired in parallel with
a mechanical time clock, using the auxiliary relay supplied
in the high voltage power panel of the heat pump.
For example, if you select a Pump Start Time interval of
4 hours and have the AutoSet feature enabled, this is the
sequence of events that will happen:
1. The heat pump displays a countdown window after the
filter pump shuts off.
2. After four (4) hours, heat pump will switch on and start
the filter pump to sense water temperature.
3. If the water temperature has fallen below your Set Point,
the heat pump will turn on and begin heating the body
of water. If the water temperature is above the Set Point,
the heat pump and filter pump will shut off.
4. At the time the water circulation pump shuts off, the
heat pump will reset and begin the countdown interval
and display ‘Pump Start Delay’ again.
PUMP START DELAY
REMAINING 4:00
Extend
The Extend feature can energize a contactor which can
be connected to activate the filter pump. This allows the
heat pump to start and stop the filter pump independent
of the time clock, allowing the heat pump to circulate
water and sense water temperature.
If the temperature is not at the desired level, the heat
pump starts and runs until the water reaches the desired
temperature. The filter pump and heat pump will stop
when the water reaches the desired temperature.
To use this feature:
Be sure the water circulation pump is wired in parallel
with the mechanical time clock and the auxiliary relay
installed on the high voltage panel of the heat pump.
To enable the Extend feature:
1. Press the MENU SELECT button repeatedly until
the Extend screen is displayed.
2. Press the UP and DOWN arrows to toggle
between the ON and OFF options.
For example, if you have the Extend feature enabled, this
is the sequence of events that will happen:
1. After the filter pump shuts off, the heat pump
immediately senses the water temperature.
2. If the water temperature has fallen below the Set Point
the heat pump will start the filter pump and begin
heating the body of water. If the water temperature
is above the Set Point the heat pump and filter pump
will shut off.
3. Once the time clock restarts the filter pump, the
heat pump will stop the Extend feature and resume
normal operation.
5. The heat pump will continue this cycle every time
the water circulation pump is shut off.
6. Once the time clock restarts the heat pump, the
heat pump will stop the AutoSet feature and resume
normal operation.