Daikin ETVH16SU23EA6V [94/296] Piping installation

8 | Piping installation

Installer reference guide

EPRA14~18DAV3+W1 + ETVH16SU18+23EA6V

Daikin Altherma 3 H HT F

4P644738-1 – 2021.02

d Expansion vessel of 18l – 3/4" Male BSP

e Tundish 15mm inlet, 22mm outlet

1 Pre-assemble the adaptor and expansion vessel so that the expansion vessel is

ready for installation.

2 Mount the expansion vessel to the wall.

1 2

3 Fit the T-piece (part of the kit) to the domestic hot water cold water IN pipe of

the unit.

4 Connect the pressure reducing valve/pressure relief valve combination (part

of the kit) to the T-piece with a length of copper tube Ø22mm (field supply).

5 Connect the expansion vessel to the T-piece with a length of copper tube

Ø22mm (field supply).

6 Connect the pressure reducing valve/pressure relief valve combination to the

water mains inlet.

7 Install the tundish (part of the kit) in a vertical position within a maximum of

600 mm away from the pressure reducing valve/pressure relief valve

combination.

WARNING

Install the tundish away from any electrical device. Possible consequence: Electrical

shock or fire.

NOTICE

To ensure a free water flow through the discharge pipe, manually operate the

pressure relief valve by turning its knob left.

8 Using the accessory brass compression coupler (see "4.4.1 To remove the

accessories from the domestic hot water tank kit" [4 27]), connect the

accessory pipe (see "4.3.2 To remove the accessories from the indoor

unit"[426]) to the pipe connection located at the back of the unit. This pipe

starts at the pressure relief valve of the domestic hot water tank.