COSMOGAS MYDENS, Инструкция по установке, эксплуатации и обслуживанию

Страница: 61 / 76

61 MYDENS
COSMOGAS
8.14 - Removing the safety valve
The safety valve (detail “D” in figure 8.14) protects the
boiler from over pressures. If it has to be replaced, proceed
as follows (refer to figure 8.14):
1.- empty the central heating circuit, following the procedure
in chapter 8.16;
2.- access the internal components of the appliance
following chapter 8.2;
3.- disconnect the drain pipe “A”, loosening the sealing
spring “B”;
4.- slide the drive bar “C” towards the front;
5.- extract the safety valve “D” upwards;
8.15 - Secondary heat exchanger
for the production of d.h.w.
The production of d.h.w. is delegated to the secondary heat
exchanger (detail “5” in figure 3.1). If this heat exchanger is no
longer efficient with the passing of time, it may require cleaning
or replacement. To remove the secondary heat exchanger,
proceed as follows (refer to figure 8.15):
1.- empty the central heating circuit and the domestic hot
water circuit, respectively following chapters 8.16 and
8.17;
2.- access the internal components as per chapter 8.2;
3.- remove the burner fan unit following chapter 8.3;
4.- loosen the bolts “A”;
5.- move the secondary heat exchanger “B” backwards and
turn it as per figure;
6.- extract the heat exchanger “B” towards the front of the
boiler.
Figure 8.14 - Removing the safety valve
A
B
C
D
020002.01.034
Figure 8.15 - Removing the secondary heat
exchanger
8 - MAINTENANCE
B
A
020002.01.037