Viessmann VITOSOL-F Service Instructions Manual page 9

Filling, flushing and checking the solar...
The following description is in conjunction with Solar-Divicon (see separate installation and service instructions)
A
L
B
C
E
M
Fig. 2
Solar-Divicon
A
Shut-off valve (flow)
B
Non-return valves
C
Solar circuit pump
D
Air separator
E
Shut-off valve (adjusting screw above flow indica-
F
tor )
H
01. Open shut-off valve (flow)
(thermometer) clockwise through 45°.
02. Close shut-off valve (return)
valve (thermometer) clockwise through 90°.
03. Close shut-off valve
F
the slot on the adjusting screw to position "S".
Fig. 3
04. Connect hoses of flushing and filling facility
drain valve and fill valve
G
P
O K
L
C
D
F
G
H
M
: Turn the ball valve
B
: Turn the ball
O
: Using a screwdriver, turn
N to
.
K
Commissioning, inspection, maintenance
(cont.)
N
Drain valve
G
Flow indicator
H
Fill valve
K
Stagnation heat sink
L
Expansion vessel
M
Flushing and filling facility
N
Shut-off valve (return)
O
05. Fill the container of flushing and filling facility
with heat transfer medium.
06. Open drain valve
G
07. Start the fill pump of flushing and filling facility
08. Observe the fluid level in the container and top up
with heat transfer medium if necessary to prevent
any air entering the solar circuit. Leave the fill
pump of flushing and filling facility
no more air bubbles rise to the top of the container
(at least 20 to 30 min).
Note
Briefly open shut-off valve
the flushing process: Using a screwdriver, turn the
slot on the adjusting screw above the flow indica-
tor to the vertical position. Any air that remains in
the return is eliminated.
N
and fill valve .
K
N
running until
N
F towards the end of
.
9