Vaillant ecoTEC plus 938 - Installing the Discharge Pipe on the Expansion Relief Valve

22 Installation and maintenance instructions ecoTEC plus 0020244998_04
7.8.1.6 Internal termination downstream of sink
waste
100mm
Ø32mm
Ø22mm
≤ 3 m
Open end of pipe direct into gulley below ground level but
above water level
Susceptible to siphonage, must terminate in a gulley
7.8.1.7 External termination into rain water down
pipe
≤ 3 m
Ø22mm
Ø 32mm
NB only combined foul/rainwater drain
7.8.1.8 Additional methods of introducing air breaks
1
2 3
1 Air break
2 Using a tundish
3 Using a pipe
7.8.1.9 Connection of condensate pump
Ø32mm
Ø22mm
≥ 3 m
Preferred option for external connection
7.9 Installing the discharge pipe on the
expansion relief valve
1. Install the discharge pipe for the expansion relief valve
so that it does not interfere with the removal and fitting
of the lower section of the condensate trap.
2. Install the discharge pipe as shown (do not shorten).
3. Make sure that the end of the pipe is visible.
4. Ensure that discharged water or steam cannot cause
injury to persons or damage to electronic components.
5. Ensure the discharge pipe work is installed, routed and
terminated correctly to minimise the risk of freezing up.