FireBird Enviroair 11kW, Installation & Operation Manual

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Additionally, the following elements are required for
the DHW circuit:
Nature No. Part name
Piping
connections
1 Water inlet (DHW)
2 Water outlet (DHW)
Field supplied
3
3a – Shut-off valve
3b – Water check valve
3c – Pressure relief valve
4 Shut-off valve
5 Draining
• 1 shut-off valve (field supplied): one shut-off valve (4) must
be connected after the DHW outlet connection of the DHW
tank(2) in order to make easier any maintenance work.
• A security water valve (field-supplied): this accessory (3) is a
pressure and temperature relief valve that must be installed
as near as possible to the DHW inlet connection of the
DHW tank (1). It should ensure a correct draining (5) for the
discharge valve of this valve. This security water valve should
provide the following:
– Pressure protection
– Non-return function
– Shut-off valve
– Filling
– Draining the unit. The check valve acts as a safety device
to protect the installation against back pressure, back flow
and back syphon of non-potable water into drinking water
supply network.
NOTE
The discharge pipe should always be open to the atmosphere,
free of frost and in continuous slope to the down side in case that
water leakage exists.
8.2.3 Additional hydraulic optional elements (for DHW)
In case of a recirculation circuit for the DHW circuit:
Nature No. Part name
Piping
connections
1 Water inlet (DHW)
2 Water outlet (DHW)
Accessories 3 Water check valve
Field supplied
4 Water pump
5 Shut-down valve
• 1 recirculation water pump (field supplied):
this water pump (3) will help to correctly recirculate the hot
water to the DHWinlet.
• 1 water check valve :
this Firebird accessory (3) is connected after the recirculation
water pump (4) in order to ensure the non-return of water.
• 2 shut-down valves (field supplied) (5):
one before the recirculation water pump (4) and other after
the water check valve accessory (3)