105
Draining the process circuit
G
E
F
H
C
A
B
D
F
H
G
Fig. 57
A
Flush & drain valve
B
Control valve
C
Air vent valve
D
Drain & fill valves in the "drain" position:
F
Upper drain & fill valve open
G
Centre shut-off valve open
H
Lower drain & fill valve open
E
Drain & fill valves in the "operating" position:
F
Upper drain & fill valve closed
G
Centre shut-off valve open
H
Lower drain & fill valve closed
1.
Select standby mode.
As soon as the
"Process status"
switches to
"Standby"
, turn off the ON/OFF switch.
The process status scan can be found in the
"Diagnosis"
menu under
"Process"
.
2.
Connect hoses to all valves
A
,
C
,
F
,
H
and
route into suitable container or drain outlet.
3.
Open all valves
A
,
C
,
F
,
H
(position
D
:
"drain") and drain process circuit as much as
required.
4.
Move control valve
B
manually to the other end-
stop in order to drain all lines.
Fig. 58
5.
Close flush & drain valve
A
and air vent valve
C
.
6.
Close drain & fill valves
F
and
H
(position
E
:
"operation") and fit protective caps.
Maintenance
Draining the heating water side of the heating…
(cont.)
5678 044 GB
Maintenance
Summary of Contents for D2RA
Page 113: ...113 Maintenance Checking the Vitotronic 200 H accessories cont 5678 044 GB Maintenance ...
Page 133: ...133 Parts lists Sorption module hydraulics cont 5678 044 GB Components ...
Page 136: ...136 0001 0002 0003 0004 0005 Fig 83 Parts lists Miscellaneous 5678 044 GB Components ...
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