Nibe FIGHTER 120, Installation And Maintenance Instructions Manual

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11 NIBE FIGHTER 120
For the Installer
Q
To make the installation economical, NIBE recom-
mends that all pipes between the air treatment sec-
tion and the water heater are insulated. Insulation
should be at least 12 mm thick.
Q
Internal support bushes should be fitted when a
plastic pipe or annealed copper pipe is used.
Q
Water from the condensed water outlet (92) is
routed to a drain using the supplied plastic
hose and hose clamp. Shape the hose into
a water seal (see image). Overflow water
from safety valves goes via overflow cups
to a drain so that hot water splashes can-
not cause injury.
Q
The pipe installation must be carried out in
accordance with current norms.
Q
Maximum pipe length between the air
treatment section and water heater (forwards and
backwards) is 15 m.
Q
The pressure vessel in FIGHTER 120 is approved for
max 9.0 bar (0.9 MPa).
Installation
LEK
73
75 74
Connection
The enclosed kit includes suitable connectors that can
be used for the installation.
Q
Install the T-coupling in position (73) (blue) according
to image below. If Ø15 mm pipes are used, the en-
closed internal reducers can be used.
Q
Connect the return line from pos (70) (blue) on the
air treatment section to the right angled connection
on the T-coupling.
Install the enclosed non-return
valve on this pipe. The supplied circulation pump
must also be installed as low as possible, close to the
exchange valve. Note the direction of flow.
Q
Install a shut-off valve on the incoming cold water
pipe.
Q
Install a safety valve after the shut-off valve on the
incoming cold water pipe.
Q
Connect the incoming cold water to the T-coupling.
Q
Straight couplings, 22/15 mm, are installed on con-
nections (74) and (75) as illustrated.
Q
Connect the flow line from pos (71) (white) on the
air treatment section to pos (75) (white) on the wa-
ter heater section.
Q
Hot water connection to pos (74) (red) on the water
heater.
Pipe installation
LEK
Frånluft Avluft
Kallvatten
Varmvatten
70
71
92
Extract air Exhaust air
Hot water
Cold water