Viessmann E00T, Инструкции по установке и обслуживанию для подрядчиков

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77
4. Connect the on-site drain hose to flush & vent
valve
C
and route it into a drain.
5. Open air vent valve
D
.
6. Connect the supplied hose successively to drain
valves
K
,
M
and
O
and route into a drain.
7. Further drain the secondary circuit by opening
shut-off valves
L
,
N
and
P
.
8. Close shut-off valves
L
,
N
and
P
and remove
drain hose.
Draining the system separation circuit
A B
C
Fig. 49
1. Put the fuel cell module into service mode: See
page 47.
2. Switch the ON/OFF switch of the fuel cell module
to OFF: See page 41.
3.
Undo the screw cap on drain valve A .
4. Connect the on-site drain hose and route it into a
drain.
5. Open the drain valve by turning the top of fitting B
anti-clockwise.
6. Place a shallow container of sufficient size (min.
5 l) below drain port
C
.
7. Undo filter from drain outlet
C
.
Checking the temperature sensors
For electrical connection of the temperature sensors:
See connection and wiring diagrams from page 87.
Danger
The temperature sensors are immersed in the
heating water (risk of scalding).
Drain the boiler before replacing the sensor: See
page 76.
Troubleshooting
Repairs
(cont.)
5839343
Diagnosis