Maintenance - Panasonic WH-MHF09 Installationshandbuch

CHECK AIR PURGE VALVE d
Air purge valve d must be installed at all high
points in a closed water circuit system.
An automatic air purge valve d is provided
inside the indoor unit. To automatically purge
the air from the system, turn the plug on the air
outlet anticlockwise by one complete turn from
fully closed position.
Excessive air is automatically purged if the
plug is kept in this position.
CHECK RCCB
Ensure the RCCB set to "ON" condition before check RCCB.
Turn on the power supply to the Mono bloc unit.
This testing could only be done when power is supplied to the Mono
bloc unit.
Be careful not to touch parts other than RCCB test button when
the power is supplied to Mono bloc unit. Else, electrical shock
may happen.
•
Push the "TEST" button on the RCCB. The lever would turn down
and indicate "0", if it functions normal.
•
Contact authorized dealer if the RCCB malfunction.
•
Turn off the power supply to the Mono bloc unit.
•
If RCCB functions normal, set the lever to "ON" again after testing
fi nish.
TEST RUN
1. Fill up the Tank Unit with water. For details refer to Tank Unit
installation instruction and operation instruction.
2. Antifreeze agent must be added into water circuit to prevent freezing
of water when outdoor ambient temperatures is low. Recommended
antifreeze: Propylene glycol: 40% (equivalent to -20°C)
3. Set ON to the Mono bloc unit and RCCB. Then, for remote control
operation please refers to (Mono bloc) Air-to-Water Heatpump's
operation instruction.
4. For normal operation, pressure gauge reading should be in between
0.05 MPa and 0.3 MPa. If necessary, adjust the water pump speed
accordingly to obtain normal water pressure operating range. If
adjust water pump speed cannot solve the problem, contact your
local authorized dealer.
5. After test run, please clean the external fi lter. Reinstall it after
fi nish cleaning.
DISPOSAL OF MONO BLOC UNIT DRAIN WATER
•
When a Drain elbow 1 is used, please ensure to follow below:
- The unit should be placed on a stand which is taller than 50mm.
- Cover the 8 holes (ø20mm) with Rubber cap 2 (refer to
illustration below)
- Use a tray (fi eld supply) when necessary to dispose the Mono
bloc unit drain water.
2
Rubber cap
•
If the unit is used in an area where temperature falls below 0°C for
2 or 3 consecutive days, it is recommended not to use the Drain
elbow 1 and Rubber cap 2 , for the drain water freezes and the
fan will not rotate.
EXPANSION VESSEL b PRE PRESSURE CHECKING
• Expansion Vessel b with 10 L air capacity and initial pressure of
1 bar is installed in this Mono bloc unit.
•
Total amount of water in system should be below 200 L.
(Note: This amount of water is not include the tank unit volume)
•
If total amount of water is more than 200L, please install additional
expansion vessel (fi eld supply).
•
Please keep the installation height difference of system water circuit
within 10 m. (Inner volume of same Mono bloc unit is about 5 L)
Plug (turn
anticlockwise
by one
complete
turn)
Air purge valve d
WARNING
1
Drain elbow
x 8
BASE PAN HEATER 5 (OPTIONAL)
•
It is strongly recommended to install a Base Pan Heater 5 (optional)
if the Mono bloc unit is installed in cold climate area. Refer the
Base Pan Heater 5 (optional) installation instruction for details
of installation.

MAINTENANCE

•
In order to ensure optimal performance of the unit, seasonal
inspections on the unit, external fi lter and fi eld wiring have to be
carried out at regular intervals. This maintenance should be carried
out by authorized dealer.
Do not add or replace other than R410A type. It may cause product damage,
burst , injury and etc. Use compatible R410A tools for refrigerant piping work
and refrigerant charging during installation or servicing.
CHECK ITEMS
Is the connecting cable fi xed to terminal board fi rmly?
Is the connecting cable clamped fi rmly?
Is the earth wire connection properly done?
Is water pressure higher than 0.05 MPa?
Is the pressure relief valve operation normal?
Is the RCCB operation normal?
Is the power supply voltage within the rated voltage range?
Is there any abnormal sound?
Is the heating operation normal?
Is the thermostat operation normal?
Is the remote control LCD operation normal?
Is the Mono bloc unit water leak free on test run?
WARNING
9