Vaillant Solar hot water systems, Системное руководство

Страница: 23 / 68

23 Manual - Solar hot water systems
5.1 Installation of the solar cylinder
5.1.1 Description of the solar cylinder
6
21
22
23
24
20
1
2
3
N
L
im
m
e
rs
io
n
h
e
a
te
r
C°
c y
lin
d
e
r
c
o
n
tr
o
l
C°
1
2
4
5
7
14
13
15
16
17
19
18
8
9
10
11
12
3
Fig. 5.1 auroSTOR function elements
Key
1 Hot water connection
2 Temperature and pressure relief valve (95 °C, 7 bar)
3
Expansion vessel
4 Connection for expansion vessel
5 Pressure-controlled cold water outlet
6 Connection for secondary return
7
Cold water supply
8 Pressure limiting valve (3.5 bar) with line strainer
9 Expansion relief valve (one port valve, 6.0 bar)
10 Tundish
11 Cylinder drain valve
12 Sp 2 temperature sensor immersion sleeve
13 Adjustable feet
14 Return (solar circuit)
15 Flow (solar circuit)
16 Return (boiler)
17 Flow (boiler)
18 Immersion heater switch
19 Thermal cut out of solar pump, set to 90 °C, connected to the
solar pump in order to isolate this heat source in the event of
failure of the solar control.
20 Thermal cut out of immersion heater
21 Cylinder thermostat (20 °C - 65 °C)
22 Immersion heater
23 Thermal cut out of the cylinder thermostat, set to 90 °C,
connected to the motorised 2 port valve, in order to isolate the
primary heat source in the event of failure of the domestic hot
water thermostat.
24 Thermostat, immersion heater
Installation 5