Installation instructions S-HR series page 25
P1
4
T1
2
1
3
19 5
18
7
6
T3
9
20
T2
C 11
E
K
13
14 15 16
17
W
G 21 A 10
R
T5
1
heat exchanger
2
ignition unit
3
fan unit
4
air inlet damper
5
gas block
6
safety valve
7
automatic air vent
8
ceramic burner bricks
9
calorifier HWS (S-HR-T)
10
operating panel
unit description
figure 17
11
Control Tower
12
water filter return central heating
13
three-way valve (S-HR-T)
14
circulation pump
15
inlet combination valve (S-HR-T)
16
safety valve (S-HR-T)
17
thermostatic mixing valve (S-HR-T)
18
flue gas discharge
19
combustion air supply
20
air unit
21
type plate