Connecting The Gas & Water - Benchmark VOKERA Mynute 12 VHE Instructions Manual

NOTE
Seal the flue terminal assembly to the wall using cement
or a suitable alternative that will provide satisfactory
weatherproofing. The interior and exterior trim can now
be fitted.
4.5.3.3 VERTICAL TERMINATION (fig. 16)
The twin flue system must be converted to the dedicated
concentric flue kit for termination.
• The vertical terminal is supplied with a built-in converter
box and cannot be shortened.
• A 130mm hole is required for the passage of the con-
centric terminal through the ceiling and/or roof.
Depending on site conditions it may be preferable to install
the terminal assembly prior to fitting the twin flue pipes.
Fit the appropriate flashing plate to the roof and insert
the vertical flue terminal through the flashing plate from
the outside, ensuring that the collar on the flue terminal
fits over the flashing.
Push-fit the twin flue pipes onto the concentric to twin
converter ensuring that the exhaust pipe connects to the
exhaust connection on the concentric to twin converter.
If necessary cut the plain ends (male) of the twin flue pipes
to allow connection to the concentric to twin converter.
NOTE
• Before cutting twin flue pipes ensure allowances have
been made for connection onto the previous piece and
onto the concentric to twin converter. The last twin flue
pipes must be pushed 50mm onto the male spigots of
the concentric to twin converter.
• You must ensure that the entire flue system is properly
supported and connected.
• Ensure that any horizontal sections of pipe have a 1º
fall towards the appliance (17mm per 1000mm).
4.6 CONNECTING THE GAS AND WATER
The appliance is supplied with a 15mm service valve for
the gas connection and 22mm copper to brass adapters
for the flow and return connections. The service valve
is of the compression type. The accessories pack also
contains sealing washers etc, for use with the service
valve and copper connections.
When connecting pipe work to the valves, tighten the
compression end first then insert the sealing washers
before tightening the valve to the appliance.
NOTE
It will be necessary to hold the valve with one spanner
whilst tightening with another.
4.6.1 GAS (fig. 6)
The appliance is supplied with a 15mm service valve,
connect a 15mm pipe to the inlet of the valve and tighten
both nuts.
NOTE
It will be necessary to calculate the diameter of the gas
supply pipe to ensure the appliance has an adequate
supply of gas.
4.6.2 FLOW & RETURN (fig. 6)
The appliance is supplied with 22mm copper to brass
adapters for the flow and return service connections.
There are two connections at the top of the boiler and two
connections at the bottom; the boiler is supplied with the
Fig. 15
Fig. 16
15