Vailant ecoTEC plus 937, Installation And Maintenance Instructions Manual

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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
4
3
2
1
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.
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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
1
2
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.
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Sequence of operations during installation 5