GIA HTW HTW-AT-O-200VA2, Owners And Installation Manual

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● If you remove the sediment dirt of the inner water tank regularly, it will improve the working
efficiency. Sewerage/drainage method: turn off the power and inlet water valve, open one of the
water outlet and sewage valve, and then the sewage and sediment will come out. Turn off the
sewage valve until discharge of the water finishes.
5. Pipeline System Connection
Fig.8 Pipeline connection
ATTENTION
● Do not use iron pipe to install the appliance. The water pipeline system should adopt new pipes
that can meet drinking water standards, such as CPVC/PPR pipe or PB. Please do not use
smelly PVC pipe.
●
Install the water pipes, connectors and other parts according to above figure. If the installation
environment is under 0 ℃， all pipes should be with insulation treatment.
●
Please keep the condensed water outlet and safety valve outlet clean and unblocked.
6. Pipeline Connection Instructions
(1) Installation requirements of water inlet pipes
Screw threads are G3/4” (nipple). The lifetime of pipes and pipe components cannot be shorter
than the lifetime of the appliance, and they should be able to withstand high temperature of
80
℃
, so as to avoid damage.
(2) Installation requirements of safety valve connection pipes
Screw threads are G1/2'' (internal), make sure the water can flow out of the safety valve and
the drainage outlet should be installed straight downwards. After finishing installation, please
make sure that drainage hose connected to the safety valve's drainage outlet should be
maintain downwards and stay open to the frost-free environment.
-8-
■ Operation Instruction
1. Turn on / off the Appliance
With the power connection, press the button "ON/OFF", then the appliance will turn on. Press the
button "ON/OFF" again, the appliance will turn off.
2. Mode Selection
When the appliance is on, you can select the operating mode "Automatic", "Heat pump" or
"Assistance" (electricity-assistant heating) by pressing the “MODE” button or active “Boost”
operating mode by long press the “TIMING” button for at least 3 seconds.
(
1
)
“Heat pump” mode.
Select this operating mode means that the appliance only uses the heat pump to reach the set
temperature. The water temperature can be set between 28
℃
and 65
℃
. This ensures
maximum energy saving.
( 2 ) “Assistance” mode.
Select this operating mode means that the appliance only uses the electric heating element to
reach the set temperature. The water temperature can be set between 28 ℃ and 75 ℃ .
(
3
)
“Automatic” mode.
Select this operating mode means that the heat pump and electric heating element are used
depending on the situation. If the water temperature in the storage tank is below 65
℃
and the
ambient temperature is between 0 ℃ and 43 ℃ , the heat pump is the only heat source used.
Otherwise, the electric heating element is switched on. The water temperature can be set
between 28
℃
and 75
℃
.
(
4
)
“Boost” mode.
In this operating mode, the display indicates “H4” on it and the appliance uses both the heat
pump and electric heating element to reach the set temperature. The water temperature can
be set between 28
℃
and 75
℃
, but only the electric heating element is used at
water
temperature above 65
℃。
As soon as the set temperature is reached, the appliance switches from the “Boost” mode
back to the previously set operating mode. If you want to stop “Boost” operating mode before it
reaches set temperature, long press the “TIMING” button again for at least 3 seconds.
The appliance can reach the set temperature in the shortest time but the energy efficiency ratio
decreases in ”Boost” operating mode. Therefore, it is suggested to use this function only when
the ambient temperature is low or large amount of hot water is needed quickly.
(5) When the display is on, long press the “MODE” button for at least 3 seconds, and then press
▲
or
▼
button referring to the following :
F1: the temperature of discharge.
F2: the temperature of environment.
F3: the temperature of evaporator pipes.
F4: the temperature of suction.
F5: the status of compressor; 0 means compressor off, 1 means compressor on.
F6: the status of fan motor; 0 means motor off, 1 means motor runs at low speed, 2 means
motor runs at high speed.
F7: the status of four-way valve; 0 means four-way valve off, 1 means four-way valve on.
F8: the status of automatic sterilization function; 0 means the function off, 1 means the function
on. You can change the status by pressing “CLOCK” button and save the status by pressing
“MODE” button. The factory setting for this function is on.
operating parameters
Installation Instructions of Usage and Daily Operations
42