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PREPARATION OF HEATING
•
Heat pump type
Heat pump type heating applies the mechanism that draws the heat from the outside air to warm up the room by means of the
refrigerant.
•
Defrost operation
During heating operation, frost will be formed on the outdoor unit if the temperature outside the room drops. If left alone, the heating
efficiency decreases. In order to deal with this, the operation is automatically switched to defrost operation to remove the frost. During
the period, the air flow of hydro module unit and outdoor unit is stopped and “heating defrost” is displayed.
•
Outer air temperature and heating capacity
The heating efficiency of hydro module unit decreases as the outside temperature becomes lower. If the capacity of hydro module unit
for heating is not sufficient, please use other heating device.
•
Time required until the room temperature increases
Hydro module unit circulates warm water to warm the entire room, so it takes a while to rise up the room temperature. It is
recommended to start operation earlier on a very cold day.
“In operation for defrosting.” display
When frost forms on the OU, the heating performance will decrease. This will cause the unit to automatically
switch to defrost operation, and hot water from the IO will stop.
The message “In operation for defrosting.” will be displayed on the message display. After the defrost operation
has completed, “In operation for defrosting.” will disappear, and the unit will switch back to its normal heating
operation.
NOTICE
An auto restart function, which is disabled at the factory setting, is applicable to the remote control. Consult your dealer.
What is auto restart
• When a power failure occurs or the power supply is turned off, the function allows the system to automatically resume operation with the
remote control setting made set before the power failure when the power supply recovers. If the system is stopped before power failure
it remains stopped after the power recover.
• Note that in the following cases it is needed to set again with the remote control.
Timer setting is cancelled. But the sleep timer recovers after power failure recovers. When recovering from a power failure, holiday
setting will override the weekly timer setting. And time setting returns to default. To return to original setting, after time setting,
execute “holiday cancel”.
CAUTION
Make sure to stop the operation before turning off the power supply when the auto restart function is enabled. (If the power supply is
turned off while the system is operating, the indoor unit pump will start immediately when the power supply is turned on. In addition, the
outdoor unit starts operating 3 minutes after the power supply is turned on.)
AUTO RESTART
<WIRED REMOTE CONTROL>
CASES WHEN “IN OPERATION FOR DEFROSTING” IS DISPLAYED
HEATING OPERATION
Please observe the following points in order to use the hydro module unit in a safe and comfortable manner.
Make sure to request your dealer for installation, and do not attempt to do by yourself.
Is the system installed on a wall which durable enough to hang the hydro module unit?
Avoid the place where operation noise cause problems to your neighbors.
Normally the efficiency of the hydro module unit will become lower after a while, because dirt accumulates inside the system. This occurs
gradually in around 3 years of use, depending on the condition of use and surrounding environment. It is thus necessary to conduct
inspection maintenance in addition to regular maintenance. We recommend you to consult the dealer from whom you purchased the
system and make a contract for periodical inspection. (charged).
INSTALLATION, RELOCATION, AND INSPECTION MAINTENANCE
Warning : Make sure to consult a dealer or specialist if it is required to relocate and reinstall the hydro module unit.
If the hydro module unit is installed incorrectly, water leakage, electric shock and/or fire may occur. Note that an installation
fee will be charged for relocation and installation.
Caution : Make sure to perform grounding work
Do not connect the ground wire to any gas pipe, water pipe, or wires of lightning conductors and telephones. If the ground
work is not good, it may lead to electric shock.
Caution : A leakage breaker is necessary depending on the installation environment.
If it is not mounted there, it may lead to electric shock.
Only qualified specialists of electrical and grounding work can do these works according to “electric equipment technical standards”.
Is the wiring designated for the hydro module unit?
Is the remote control mounted correctly?
• In the case of exposed wiring, is the wiring fixed with the attached screw?
• Is the attached remote control clamps used for fixing the remote control cord?
• Is the remote control mounted at a height where children cannot reach?
OPERATION RANGE
Please use the system in the following operation range. If the system is operated outside this range, the protection controls
may be activated to prevent malfunction.
CAUTION
INSTALLATION LOCATION
RELOCATION
INSPECTION MAINTENANCE
ELECTRICAL WORK
Condition
Operation
Circulating water temperature
(HMU outlet)
Temperature outside the room
Humidity inside the room
Cooling operation
Only HMU connection:
Approx. 7 to 25°C
Mixed use: Approx. 14 to 19°C
Only HMU connection:
Approx. 15 to 46°C
Mixed use: Approx. 15 to 46°C
Approximately 80% or less
Long operation under high humidity may
leads to waterdrop under the HMU.
Heating operation
Only HMU connection:
Approx. 25 (or 30) to 55°C
Mixed use: Approx. 25 (or 30) to 40°C
Only HMU connection:
Approx. -20 (or -10) to 32°C
Mixed use: Approx. -20 (or -10) to 20°C
(Note) Operation range may differ depending on models. Please check the catalog.
Menu
Direction
Heating
20:20 (Tue)
F1: High power
F2: Energy-saving
Timer
In operation for defrosting.
Set temp
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