Commissioning and adjusting
FIGHTER 200P
For the Installer
16
This is how to drain the water heater:
■ Disconnect the overflow pipe from the drain con-
nection and connect a hose to a draining pump
instead. Where no draining pump is available, the
water can be released into the overflow funnel
(99).
■ Open the drain valve (47).
■ Open a hot water tap to let air into the system. If
this is not enough, undo the pipe coupling (74) on
the hot water side and pull out the pipe.
During the initial running period, air is given off by the
heating water, and venting can be necessary. If bubb-
ling sounds can be heard from the heat pump, the
entire system requires further venting. NOTE! The
safety valve (52) also acts as a manual venting
valve. Operate it with care, since it opens quickly.
The hot water can be drained off through the drain
valve (51) using an R15 (1/2") hose coupling. Remove
the cover (80) from the valve (51). Screw on the hose
coupling and open the valve (51). Open the safety val-
ve (52) to let air into the system.
Draining the heating system
Readjustment
Draining the water heater
■ Set the switch (8) to "2" in order to accelerate the-
heating of the radiator system. NOTE! The com-
pressor has a start delay of about 10 minutes in the
start mode.
■ Set the designed capacity on the circulation pump
using its switch (35). See the section "Pipe connec-
tions” – ”Pump and pressure drop diagram". Make
sure that the switch is not in an intermediate posi-
tion.
Starting
Ventilation flows are given on the ventilation drawings.
■ Selection of the exhaust fan capacity is done by
choosing correct setting on the knobs on card
(158). Se diagram "Ventilation connection" – "Fan
diagram". Knob B is used for normanl vantilation.
To ensure the lowest possible noise level, set the
fan for the lowest possible capacity.
■ Make sure that all outside air devices are fully
open.
■ Set correct ventilation flows on the indoor exhaust
air devices.
■ If an external two way switch for ventilation is
mounted, knob A on card (158) is used for set-
ting the ventilation flow in reduced stage.
Note! The indoor exhaust air devices must not be
changed.
The ventilation flow must never be less than
100 m
3
/h.
Setting the ventilation
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