54
ROTEX GCU compact -
10
x
Faults and malfunctions
10.5 Emergency operation
If the settings on the electronic control are incorrect, an emer-
gency heating operation can be maintained. To do so, activate
the special function "
Manual Operation
" on the control (see en-
closed operating instructions "ROTEX RoCon BF control").
When the 3-way valves are intact, the ROTEX GCU compact will
switch to heating operation. The necessary flow temperature can
be adjusted with the rotary switch.
A
pressure charge
can be achieved in the special function
"
Manual Operation
" as follows,
a) by setting up
manual parallel operation
(see
section 10.5.1). Requirements and procedures are identical
to those in chapter 4.11.4.
or
b) by removing the
valve drive
of the 3-way valve (fig. 4-28,
item 5.1) from the valve;
–
–
GCU compact
5xx
(BIV):
3UV DHW
(fig. 3-4).
Ɣ
Press the unlocking button (fig. 4-28, item 5.2) and rotate
the motor head of the valve drive 1/4 turn to the left
(bayonet system).
Room heating is not possible while the valve drive is
removed.
10.5.1 Parallel operation
If the 3-way valve drive is defective or disconnected from the
power supply, a manual parallel operation of heating circuit and
storage tank charging circuit can be set up
temporarily
. This is
only possible when the 3-way valve concerned is in the position
"AB-B" (hand lever faces away from the valve body). The pro-
cedure is identical to the one in chapter 4.11.4.
GCU compact
3xx
(BIV):
3UV DHW
(fig. 3-1)
Содержание GCU compact
Страница 62: ...62 ROTEX GCU compact 13 x Notes 13 Notes...
