9
x
Service and maintenance
●
If necessary, replace faulty parts.
●
Install the burner flange on the boiler body (see chap. 7.4 –
"Burner installation").
– Fully
install a new burner flange seal and a new seal
for the burner surface
(EDS 15-20 GCU2,
5750010
1)
, EDS 24-28 GCU2
5750050
2)
).
●
Check the gas line for leakage.
●
Start the burner, check sealing on the burner flange.
●
Check combustion values:
– Flue gas temperature at measuring sockets of the flue gas
pipe. (Target value < 80 °C),
– O
2
and CO
2
content (see chap. 7.3.1),
– CO content (target value < 50 ppm).
If the combustion values do not lie within the set value
range, the burner must be adjusted according to
chap. 7.3.
9.2.4 Filling, topping up the storage tank
Without installed
solar system
●
Connect the
filling hose
with non-return valve (1/2")
to
the
"solar inflow connection"
item 1)
.
●
Fill the storage tank of the GCU compact
until water
escapes out of
the
overflow connection
(fig. 9-3,
item 2)
.
●
Remove the filling hose with non-return valve (1/2").
With installed
solar system
●
Fit the filling connection with KFE cock (accessory:
KFE BA,
16 52 15
) to the solar control and pump unit (RPS4).
●
Connect the
filling hose
with non-return valve (1/2")
to
the
previously installed KFE cock.
●
Fill the storage tank of the GCU compact
until water
escapes out of
the
overflow connection
(fig. 9-3,
item 2)
.
●
Remove the filling hose with non-return valve (1/2").
1)
GCU compact 315 / 320 / 515 / 520 (Biv)
2)
GCU compact 524 / 528 (Biv)
We recommend, to enter all measured values and the
conducted work with the date and signature into the en-
closed operating handbook.
CAUTION!
Escape of flue gas from the system will be damaging to health.
●
Top up the storage tank until it overflows before starting up
the ROTEX GCU compact.
CAUTION!
Filling the storage tank with a too high water pressure or too high
flow speed can cause damage to the GCU compact.
●
Only fill with a water pressure <6 bar and a flow speed
<15 l/min.
UK only!
CAUTION!
If filling or topping up the storage tank is done by means of the
boiler filling and drain valve, a temporary filling loop must be
used with the appropriate backflow prevention device in ac-
cordance with clause G24.2, Guidance to the Water Supply
(Water Fittings) Regulations 1999.
1
Solar inflow
2
Safety overflow
Fig. 9-3
Filling buffer storage - without connected DrainBack solar sys-
tem
Summary of Contents for GCU compact 315
Page 81: ...13 x Notes 13 Notes...
Page 82: ...13 x Notes...
