Rotex GasCompactUnit Series, Инструкция по установке и обслуживанию

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F i l l i n g t h e s y s t e m
3.5 Filling
Only fill the heating system when all
installation work has been completed. Fill the
ROTEX GasSolarUnit/GasCompactUnit in the
following sequence:
1. DHW heat exchanger
(always fill first)
Open the shut-off valve in the cold water inlet
pipe to fill the corrugated stainless steel pipe
heat exchanger. Open the DHW draw-off taps
during the filling process to adjust the highest
possible draw-off volume.
Let water run for a little while after it first
emerges to fully vent the heat exchanger and
to flush out any contamination or residues
from the water pipework. Observe the warning
in chapter 3.4 section “Connection of the
heating and DHW lines”.
2. Unpressurised cylinder
If a Solaris system is installed with the
GSU/GCU, fill the cylinder simply with a hose
connected to the boiler fill & drain valve on the
control and pump station (RPS).
If no Solaris system is connected to the GSU,
fill the cylinder through the hose ferrule
supplied and fitted to the upper side
connection of the cylinder (pos. 14a in
Fig. 2.2.1) or a hose connected to the Solaris
flow connection (pos. 7 in Fig. 2.2.1).
Fill the GCU via a hose plugged into the filling
port (pos. 7 in Fig. 2.2.1) or a hose connected
to the hose ferrule supplied and fitted to the
upper side connection of the cylinder.
Fill the cylinder once until water is expelled
from the safety overflow or the condensate
drain.
Important: Fill the cylinder until
is overflows to ensure that all
three electrodes of the level sensor
are immersed in water. Only this ensures
that the electronic can register the ade-
quate level and enable the burner opera-
tion.
The burner will be locked out if the level is
too low.
3. Heating and DHW primary circuit
Lock the three-way valve in its central position
for filling (a stable central valve position can
only be assured in a zero volt condition -
factory-set condition). To ensure that the
system is fully vented, do not release the
three-way diverter valve by pushing in the
reset button earlier than one hour after the
system has been started (Fig. 3.5.1).
Note: The central position remains
stable only when the valve is at
zero volt. The valve resets itself
automatically when the servomotor is
supplied with power to drive into the valve
positions AB-A (cylinder heating).
1 Boiler return
2 Heating return
3 Cylinder heating return
4 Three-way diverter valve
5.1 Valve servomotor
5.2 Reset button of the servomotor lock
5.3 Lever
Fig. 3.5.1: Fill position of the three-way
diverter valve
The fill & drain valve (boiler fill & drain valve)
is located in the pump line of the Gas-
SolarUnit/GasCompactUnit (pos. 37 in
Fig. 2.2.1). Connect a 1/2” hose to this valve.
Open the fill & drain valve and start to fill the
system with water, until the pressure gauge
indicates a positive system pressure in the
centre of the green range of the pressure
gauge glass (pos. 33 in Fig. 2.2.1). First turn
the pressure gauge glass so that the minimum
pressure indicator equals the system height
plus 2 m (1 m WS equals 0.1 bar). Ensure that
boiler water cannot flow into the DHW line.
Vent the heating network after filling.
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