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9 - START-UP
9.4 - TRIAL-RUNNING
Before using this unit, please follow the steps below.
 Storage tank water filling:
If the unit is used for the first time or used again after
emptying the storage tank, please make sure that the
storage tank is full of water before turning on the power
Open open
Open the cool water inlet valve and the hot water outlet valve.
Aqueduct inlet DHW outlet
When water flows out from the water outlet (DHW), the
storage tank is full.
Turn off the hot water outlet valve and water effusion is
finished.
Close
DHW outlet
DHW outlet
Operation without water in water storage tank may result in the
damage of auxiliary e-heater. Due to such damage,
manufacturer will not be liable for any damages caused by this
issue
9.4 - CHECKING LIST BEFORE COMMISIONNING
Water effusion before operation 1) Checking list before trial-running.
2) Correct installation of the system.
3) Correct connection of water/air piping and wiring;.
4) Condensate draining smoothly well insulation work for all
hydraulic part.
5) Correct power supply.
6) No air in the water pipeline and all valves opened.
7) Effective electric leakage protector installation.
8) Sufficient inlet water pressure, between 1,5 Bar ~ 6,5 Bar
(0,15 MPa ~ 0,65 MPa) (1,5Bar) (0,15MPa)
About Running
1) System Structure Figure
Unit has two kinds of heat sources: Heat pump
(compressor) and electric heater.
Unit will automatically select heat sources to heat water to
the target temperature.
Storage tank
Water outlet
Temperature probe (T5U)
Electric heater
Water inlet
Temperature probe (T5L)
2) Water Temperature Display
The temperature shown on the display depends on the
upper sensor. So it is normal that the display temperature
has reached to target temperature but compressor still
running, because the lower water temperature does not
get to target temperature.
Modes will be automatically selected by unit. manually
mode selection is unavailable.
34


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