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4. Pipe installation
The installation must be carried out in accordance with current heating and
DHW standards. The product must be connected to an expansion vessel in
an open or closed system. Do not forget to flush the radiator system before
connection.
Connections, placement and dimensions
Refer to each product's Technical Data.
Pipe connections on the unit
If annealed piping is used, support sleeves must be fitted.
Mixing valve
Install a mixing valve for the hot tap water in order to avoid the risk of scalding.
Safety valves
Safety valves for the tap water circuit and boiler are included with delivery.
Connect the overflow pipes to the floor drain directly or, if the distance is more
than two metres, to a funnel. Water may drip from the overflow pipe. It must
therefore slope towards the floor drain, be installed frost-free and left open/
without pressure.
Filling valve – heating circuit
Fit a filling valve between the cold water connection and the radiator return
pipe, or between the cold water pipe and the expansion pipe.
Drainage valve
Fit the drainage valve to one of the CTC Hot Water Storage Tank's lower
connections. The drainage valve can also be fitted into a low lying pipe.
Manometer – system pressure
Fit a manometer to the expansion pipe or radiator return pipe.
Expansion vessel connection
Adjust the expansion vessel to the appropriate pre-pressure for the property.
This must be done before the system is filled with water.
If an open expansion vessel is used, the distance between the expansion
vessel and the highest placed radiator must not be below 2.5 m, in order to
avoid introducing oxygen into the system.
Insulation
For optimal efficiency, make sure that after installation all pipe parts,
connections and used and unused plugged connections are insulated. Use
insulation components and supplement these with Armaflex insulation with a
minimum thickness of 10-15 mm or equivalent. Make sure the insulation at
the connections reaches all the way to the hot water storage tank insulation
and that it has no gaps, so as to prevent any loss of heat.
!
The safety valve's
opening pressure
is determined by
the component in
the system which
tolerates the lowest
pressure.
CTC AT. Hot Water Storage Tanks
13
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