Vaillant ecoTEC plus 937 Service Manual download pdf (Page 31)

Installation and maintenance instructions ecoTEC plus 937 0020031552_06 31

min.

180

Fig. 5.12 Installation space condensate siphon

There must be a minimum clearance of 180mm below

the siphon for access.

5.16 Connecting the drain pipe to the pressure

relief valve

Fig. 5.13 Installing the discharge pipe

The pressure relief for the heating system is integrated

into the boiler.

Remove the discharge pipe with union nut and rubber

seal from the box of accessories for the shift load

storage tank.

Insert the rubber seal (1) into the union nut (2) and

screw the discharge (3) onto the pressure relief

valve (4).

The discharge pipework should be as short as possi-

ble with a continuous fall from the appliance.

The discharge pipe should terminate in such a way

that nobody can be injured and no cable or other

electrical components can be damaged if water or

steam is discharged. Please note that the end of the

discharge pipe must be visible.

We recommend that the discharge pipe for

the pressure relief valve is not shortened.

5.17 Connecting the drain hose to the pressure

relief valve of the stratified storage tank

Fig. 5.14 Storage tank pressure relief discharge pipe connec-

tion

The safety valve for the hot water system is integrated

in the shift load storage tank.

Remove the flexible drain hose from the box of

accessories for the shift load storage tank.

Push the drain hose (1) onto the safety valve (2).

The end of the drain hose can be directed via an open

connection to a tundish and terminated in a similar

manner to the boiler pressure relief discharge pipe.

5.18 Connecting the exhaust gas system to the

combi-heater

Refer to the separate air/flue duct installation

instructions included with the appliance.

Sequence of operations during installation 5

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 79 80

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Vaillant ecoTEC plus 937 Service Manual Page 31

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