EHVH/X16
Daikin Altherma - Low Temperature Split
4P313777-1 – 2012.05
Installer reference guide
56
11 Maintenance and service
11
Maintenance and service
11.1
Overview: Maintenance
11.2
Maintenance safety precautions
11.2.1 Opening the indoor unit
You just need to remove the front panel and remove the expanded
polystyrene front cover of the unit to gain access to most parts which
need maintenance. In rare cases, you may also need to remove the
switch box.
11.3
Checklist for yearly maintenance for indoor
unit
Check the following at least once a year:
Q
Water pressure
Q
Water filter
Q
Water pressure relief valve
Q
Relief valve hose
Q
Pressure relief valve of the domestic hot water tank
Q
Switch box
Q
Descaling
Q
Chemical disinfection
Q
Anode
Water pressure
Check whether the water pressure is above 1 bar. If it is lower, add
water.
Water filter
Clean the water filter.
Water pressure relief valve
Open the valve and check the correct operation.
Water may be very
hot!
Checkpoints are:
Q
Water flow coming from the relief valve is high enough, no
blockage of the valve or in between piping is suspected.
Q
Water coming out from the relief valve and contains debris or
dirt:
Q
open the valve untill the discharged water does not contain
dirt anymore
Q
flush the system and install an additional water filter (a
magnectic cyclone filter is preferably).
To make sure this water originates from the tank, check after a tank
heat up cycle.
It is recommended to do this maintenance more frequently.
Pressure relief valve hose
Check whether the pressure relief valve hose is positioned
appropriately to drain the water. See "7.3.2 To connect the pressure
relief valve to the drain" on page 23.
Relief valve of the domestic hot water tank (field supply)
Open the valve and check the correct operation.
Water may be very
hot!
Checkpoints are:
Q
Water flow coming from the relief valve is high enough, no
blockage of the valve or in between piping is suspected.
Q
Water coming out from the relief valve and contains debris or
dirt:
Q
open the valve untill the discharged water does not contain
dirt anymore
Q
flush and clean the complete tank including the piping
between the relief valve and cold water inlet.
To make sure this water originates from the tank, check after a tank
heat up cycle.
It is recommended to do this maintenance more frequently.
Switch box
Q
Carry out a thorough visual inspection of the switch box and look
for obvious defects such as loose connections or defective
wiring.
Q
Using an ohmmeter, check for correct operation of contactors
K1M, K2M, K3M and K5M (depending on your installation). All
contacts of these contactors must be in open position when the
power is turned OFF.
Descaling
Depending on water quality and set temperature, scale can deposit
on the heat exchanger inside the domestic hot water tank and can
restrict heat transfer. For this reason, descaling of the heat
exchanger may be required at certain intervals.
NOTICE
Maintenance should preferably be carried out yearly by an
installer or service agent.
DANGER: RISK OF ELECTROCUTION
DANGER: RISK OF BURNING
NOTICE Risk of electrostatic discharge
Before performing any maintenance or service work, touch
a metal part of the unit in order to eliminate static electricity
and to protect the PCB.
NOTICE
Handle the water filter with care. Do NOT use excessive
force when you reinsert the water filter so as NOT to
damage the water filter mesh.
WARNING
If the internal wiring is damaged, it has to be replaced by
the manufacturer, its service agent or similarly qualified
persons.
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Содержание EHVH16S18CA
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