hajdu HB300C Manuel De Mise En Service, D'opération Et D'entretien page 59

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rational to equip the hot water pipe with heat insulation.
Unused connection branches of the hot water tank must be closed and
n)
equipped with heat insulation. .
Review measure diagrams (Figure 2.8.-1.)°
o)
The dimensioning and correct fitting of ventilation connections are key to the
p)
adequate and sufficiently quiet operation of the device.
Pressure loss in the air duct reduces air flow, which may reduce the efficiency
q)
of the device.
Maximum static pressure must be below 25 Pa.
r)
Pipeline connection
3.5.
It is forbidden to connect the appliance with a hose pipe. Galvanized steel pipe,
plastic pipe and red copper pipe can equally be used as cold water pipe or hot water
pipe. In case of connecting red copper pipes to the water pipeline system, the use of
insulating intermediate pieces is compulsory.
The package of intermediate pieces distributed by HAJDU Zrt. are sold in outlay
of 2 items in contracted shops of HAJDU Zrt. and in the general commerce. One of the
intermediate pieces should be mounted directly to the hot water pipe of the tank, while
the other should be mounted between the fittings already mounted and the red copper
water pipeline system.
In case of connection without intermediate pieces, the guarantee on the appliance will
be invalidated.
IT IS AT THE RISK OF DEATH AND THEREFORE IT IS FORBIDDEN TO PUT THE
WATER TANK AND THE HEAT EXCHANGERS UNDER A PRESSURE LARGER
THAN THE PERMITTED OPERATION PRESSURE (0.7 MPa) !
During connection to the water pipeline system, it is compulsory to keep the
building order of the fittings according Figure 7.3. -1., as proper operation of the
appliance highly depends on that.
HV - Cold water
Figure 7.3.-1.