Hisense Hi-Therma Serie Manual De Instalación Y Mantenimiento página 46

TEST RUN
10 TEST RUN
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N O T E
NEVER operate the unit without careful inspection .
10.1 CHECKLIST BEFORE TEST RUN
Do NOT operate the system before the following checks are OK:
You have read the complete installation instructions of
outdoor unit, indoor unit and master controller carefully.
The indoor unit is properly mounted.
The outdoor unit is properly mounted.
The following field wiring has been carried out according to
this document and the applicable legislation:
▪ Between the local power supply and the outdoor unit
▪ Between indoor unit and outdoor unit
▪ Between the local power supply and the indoor unit
▪ Between the indoor unit and the valves (if applicable)
▪ Between the indoor unit and the room thermostat (if
applicable)
▪ Between the indoor unit and the DHW tank
(if applicable)
The system is properly earthed and the earth terminals
are tightened.
The fuses or locally installed protection devices are
installed according to this document, and have NOT been
bypassed.
The power supply voltage matches the voltage on the
Nameplate of the unit.
There are NO loose connections or damaged
electrical components in the electrical box.
There are NO damaged components or squeezed pipes
on the inside of the indoor and outdoor units.
Only for DHW tank with electric heater:
Temperature protection switch (Auto restore) has
been already wired.
Temperature protection switch / Temperature fuse has
been already wired.
There are NO refrigerant leaks.
The water pipes are thermally insulated.
The correct pipe size of refrigerant pipes (gas and
liquid) are installed and the pipes are properly insulated.
There is NO water leakage inside the indoor unit.
The shut-off valves are properly installed and fully open.
The stop valves (gas and liquid) on the outdoor unit
are fully open.
The air purge valve is open (at least 2 turns).
The safety valve purges water when open.
The minimum water volume is guaranteed in all
conditions. See section 8.3 "Check water volume".
The DHW tank is filled completely.
!
C A U T I O N
• The unit starts only when all check points are cleared up.
• Pay attention when system is running:
(A) Do not touch any parts of discharge pipelines, because the
discharge temperature of compressor can be more than 90ºC.
(B) Do not press AC contactor button, otherwise serious accident may
be caused.
•
Do not touch any electrical components in 10 minutes after main
power supply is cut off.
10.2 CHECKLIST DURING TEST RUN
The minimum flow rate during electric heater/defrost
is guaranteed in all conditions. See section "8.2
operation
Requirements and recommendations for hydraulic
circuit" and "8.3 Water filling".
To perform an air purge.
To perform a test run.
To perform an actuator test run.
Underfloor screed drying function
The underfloor screed drying function is started
(if necessary).
!
C A U T I O N
• When performing test run of floor heating, higher temperature in indoor
unit (up to 55 ºC) will damage floors due to expansion and
contraction. Recommend it is within 30 minutes.
• Use the controller to start test run (refer to the manual of master
controller).
• It is normal that after indoor unit is energized, it may directly enter
anti-freezing running mode, and water pump automatically runs
if outdoor temperature is very low.
10.3 CHECK THE MINIMUM FLOW RATE
Check the hydraulic configuration to find out which
space heating loops can be closed by mechanical,
1
electronic, or other valves.
2 Close all space heating loops that can be closed.
Start the pump test run . See setting of DSW4-8 in
3
section "9.5 SETTING OF DIP SWITCHES ON PCB1" .
Read out the flow rate and modify the bypass valve
4 setting to reach the minimum required flow rate +
2L/min.
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