13 | Maintenance and service
Installer reference guide
100
EKHWET90~120BAV3
R32 Split series – Domestic hot water tank
4P680077-1 – 2021.11
NOTICE
The booster heater sealing must be replaced after every check. Tighten the booster
heater screws to 10N•m of torque.
13.3 To drain the domestic hot water tank
DANGER: RISK OF BURNING/SCALDING
The water in the tank can be very hot.
Prerequisite: Stop the unit operation via the user interface.
Prerequisite: Turn OFF the respective circuit breaker.
Prerequisite: Close the cold water supply.
Prerequisite: Open all the hot water tapping points to allow air to enter the
system.
1 Remove the water inlet connection, the water will flow out of the tank.
a DHW – hot water OUT (screw connection, ½”)
b DHW – cold water IN (screw connection, ½”)