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Operating modes
The operating mode can be changed through the spa user interface.
Six different operating modes are available:
1) Eco Heat (EcoH)
2) Smart Heat (HEAT)
3) Cool (COOL)
4) Eco Auto (AUTO)
5) Smart Auto (SMRT)
6) Electric (ELEC)
Eco Heat (EcoH)
In this mode, the in.temp is used as the unique source of
heating. The heating element is kept off and the in.temp
is not used to cool the water should its temperature rise
above the current set point.
Smart Heat (HEAT)
This mode uses the in.temp as the main heating source.
The heating element is turned on only if there is a large
temperature difference between the water and the set point.
The in.temp is not used to cool the water in this mode.
Cool (COOL)
This mode uses the in.temp in cooling mode only.
The in.temp is not used as a heating source and the
heating element is never activated.
Eco Auto (AUTO)
This mode borrows functionality from both Eco Heat
and Cool modes and has the ability to select the proper
Heat or Cool mode automatically according to the water
temperature. The heating element is never activated in
this mode.
Smart Auto (SMRT)
This mode borrows functionality from both Smart Heat
and Cool modes and has the ability to select the proper
Heat or Cool mode automatically according to the water
temperature. The heating element is activated only if there
is a large temperature difference between the water and
the set point.
Electric (ELEC)
This mode keeps the heat pump off and uses only the
heating element to regulate water temperature.
in.temp efficiency
The system is constantly monitoring outside temperature and as soon as this temperature impacts the efficiency of the
in.temp, the system will bypass the selected mode and use the electric heater to get a better energy efficiency.
Freeze Protection
In cold weather, if it becomes impossible for the in.temp to keep the water temperature above the freezing point, the
help of the heating element will be required even if its use should be prohibited by the operating mode or conditions.
At any time, if the water temperature drops too close to the freezing point, the operating mode will be switched
temporarily to “Smart Heat” and the system will heat until the minimum allowed set point has been reached before
reverting to its previous operating mode and resume normal operation.
Restart delay
In every circumstances, when the in.temp is shut down, be aware that there is forced waiting time of three minutes
before the in.temp can operate again. This is so to prevent damage to the equipment. For example, if the operating
mode has been changed from Cold to Hot succeeding an increase of the setpoint, the in.temp will be allowed to start
only after a delay of three minutes.
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To protect the paintwork, avoid leaning or putting objects on the shell. The cover and the panels can be wiped with a
damp cloth and domestic cleaner. (Warning: Never use cleaning agents containing sand, soda, acid or chloride as these
can damage the surfaces.)
To prevent clogging in the titanium heat exchanger, ensure that the system incorporates a water filtration treatment
equipment. In the event of a problem occurring due to contamination, the system should be cleaned as described
below. (Warning: the fins on the finned tube heat exchanger are sharp!).
Cleaning the Heat Exchanger and Pipework
Contamination in the pipes and heat exchanger can reduce the performance of the in.temp. If this is the case, the pipe
system and heat exchanger must be cleaned by a technician. Use only pressurized drinking water for cleaning.
Ventilation system cleaning
The finned heat exchanger, fan and condenser outflow should be clear of all obstructions (leaves, twigs, etc.) before
each new heating season. These can be manually removed using compressed air or by flushing with clean water.
It may be necessary to remove the unit cover and air inlet grid first.
Warning: Before opening the unit, ensure that all electrical supplies are protected from human access.
To prevent the evaporator and the condenser tray from being damaged, do not use hard or sharp objects for cleaning.
Under extreme weather conditions (e.g. snow drifts), ice may form on the air intake and exhaust air outlet grids.
If this happens, the ice must be removed in the vicinity of the air intake and exhaust air outlet grids to ensure that
the minimum air flow rate is maintained.
Winter Shutdown
To prevent frost damage to the unit when not in use the in.temp should be drained of all water. If the in.temp cannot be
winterized, another form of frost protection should be considered.
Warning: The warranty does not cover damage caused by inadequate frost protection measures during the winter.
Maintenance
Maintenance Information Maintenance Information
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Steps to winterize your in.temp
• Disengage the main power breaker of the spa.
• Open the spa control door and disconnect the main power cable coming from the in.temp (see on page 9).
You can leave the communication cable connected to connector P83.
• Locate the input and output valves, according to the figure on page 11, and mark the position of the valves to make
sure they will be set back in the same position when starting back the in.temp.
• Now, completely close the input and output valves.
• Disconnect the water piping inlet and outlet from the in.temp.
• Remove the drain plug and make sure the heat exchanger drains out.
• The in.temp should be blown out with air to ensure no water is left inside. A compressed airline should be placed into
the water outlet line to blow air through the unit.
• Loosely reconnect the plumbing connection and drain plug to allow any remaining water to drain but block insects
and debris.
• Cover the in.temp with a protective tarp to prevent snow and other debris from going in the fan grill.
• Ensure that all plumbing going from the in.temp to the spa has been emptied from all water.
• Finally, engage back the main power breaker of the spa. The in.temp should not be detected by the spa control
anymore.
• Disengage the main power breaker of the spa.
• Inspect every pipes connected between the in.temp and the spa to find any damages. If everything is fine, proceed to
the next step.
• Tighten every plumbing connections that were previously loosen for the winterization and be sure that the drain plug is
correctly installed.
• Locate the input and output valves and bring them back to the opening mark already set from the winterization
procedure.
• Open the spa control door and connect the main power cable, coming from the in.temp, to the right tabs
(see on page 9).
• The communication cable RS485 should be already connected to the spa control. If not, please refer to page 9.
• Finally, engage back the main power breaker of the spa. The in.temp should be found by the spa control instantly.
IMPORTANT SAFETY INSTRUCTION:
WINTERIZATION MAY REQUIRE CABLES DISCONNECTION INTO THE SPA CONTROL.
THESE OPERATIONS MUST BE ACOMPLISHED BY A QUALIFIED SERVICE PERSONNEL.
IMPORTANT SAFETY INSTRUCTION:
STARTING BACK THE UNIT AFTER A WINTERIZATION MAY REQUIRE CABLES CONNECTIONS INTO THE
SPA CONTROL THESE OPERATIONS MUST BE ACOMPLISHED BY A QUALIFIED SERVICE PERSONNEL.
in.temp and Freezing Weather
The in.temp is equipped with a security algorithm to prevent freezing in the pipes and in the worst case, this could make
the pump running more often. The in.temp should be energy efficient even when it comes to the first freezing weather
but you should decide in advance when to winterize for the winter season.
Be aware that if there is an outage during cold weather, the pump will no longer be able to run to prevent freezing in the
pipes. Outside pipes are directly exposed to very cold temperature.
Closure
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