Daikin ETVH16SU23EA6V [241/296] To drain the domestic hot water tank

13 | Maintenance and service

Installer reference guide

241

EPRA14~18DAV3+W1 + ETVH16SU18+23EA6V

Daikin Altherma 3 H HT F

4P644738-1 – 2021.02

13.4 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 top panel. See "7.2.5To open the indoor unit"[470].

2 Remove the user interface panel. See "7.2.5To open the indoor unit"[470].

3 Lower the switchbox. See "7.2.6 To lower the switch box on the indoor

unit"[472].

4 Remove the tube from the temperature and pressure relief valve that is

located on top of the tank.

5 Remove the temperature and pressure relief valve from the tank.

6 Use a drain hose and a pump to drain the tank via the access point.

7 Tightening torques for installation:

Item Tightening torque

Tube connection 30N•m

Temperature and pressure relief valve 40N•m