p. 25/69
Figure 4.7 Recommended principal hydraulic scheme for connecting the hot
water boiler of series “Pyrotherm” to the heating system, equipped with three-
way valve and heat accumulator;
Index
Designation
1
Hot water boiler “Pyrotherm”
2
Safety valve
3
Hot water boiler
4
Return valve
5
Circulating pump 1
6
Control valve
7
Expansion vessel
8
Control valve
9
Three way mixing valve
10
Circulating pump 2
11
Control valve
Table 4.2. Designation of the elements, indexed on figure 4.7
EXPLANATION : According to EN 303-5 the heat accumulator tank is
obligatory module of a local heating system, operating with solid fuel hot water
boiler. The heat accumulator capacity calculation is made according to the
above mentioned norm, as well as heat accumulator methodology, developed by
boiler’s producer company.
Index
Designation
12
Water filter
13
Thermovalve TV
14
Return valve
15
Contact thermostat
16
Heat accumulator
17
Automatic circulating water
charger
18
Drainage valve
22
Automatic air separator
23
Safety valve
24
Return valve
Tap water
From heating
system
To heating
system
Expansion
vessel
Domestic
hot water
outflow
Cold tap
water
inflow
Drainage
