Maintenance - Daikin EKHWS050B3VJU Manuel D'installation

Note: only relevant field wiring and not all implemented parts are
shown.
For EXHBH/X units only
X8M
TR1
TR2
X9A
A1P
X13A
A4P
X2M
>2 inch
(>50 mm)
L N Y
X2M
8 9 10
L N Y
M3S
Installation manual
8
K1M K2M K5M
K3M K6M
F2B F3B F1B
X4M
X1M
X3M
X2M X4M X3M
2 L1 L2 VJU
208/230 V AC
3 kW
4 3 2
Q3L X6M
For EDH, EBH, EDL, EBL units only
K3M K3M K3M
X4M X4M X4M
F2B F2B F2B
X3M X3M X3M
X4M X2M
2
L1 L2
VJU
208/230 V AC
3 kW
2 4 3
X6M Q3L
The power supply cable towards the booster heater
X4M→X6M and the cable towards the thermal protector
X2M (13-14)→Q3L (4-3) are separated. However, if
allowed according to local laws and regulations, these 2
cables can be combined in 1 cable (5 wires).
M
AINTENANCE
In order to ensure optimal availability of the unit, a number of checks
and inspections on the unit and the field wiring have to be carried out
at regular intervals.
CAUTION
Before carrying out any maintenance or repair activity,
always switch off the circuit breaker on the supply
panel, remove the fuses or open the circuit breaker,
protection devices of the unit.
Make sure that before starting any maintenance or
repair activity, also the power supply to the outdoor
unit is switched off.
The described checks must be executed at least once a year.
1 Domestic hot water tank pressure relief valve (field supply)
and/or temperature and pressure relief valve (field supply)
Check for correct operation of the pressure relief valve and/or
temperature and pressure relief valve on the domestic hot water
tank.
2 Domestic hot water tank booster heater
It is advisable to remove lime buildup on the booster heater to
extend its life span, especially in regions with hard water. To do
so, drain the domestic hot water tank, remove the booster heater
from the domestic hot water tank and immerse in a bucket (or
similar) with lime-removing product for 24 hours.
Domestic hot water tank for air to water heat pump system
X13A
A11P A11P A11P
X9A X9A X9A
X2M X2M X2M
>2 inch
(>50 mm)
L N Y
X2M
8 9 10
L N Y
M3S
EKHWS050+080B3VJU
4PW56114-1