APR 2018
17
Hot Water Energy Storage
Unvented Cylinders
GB & NI
Installation & Maintenance Instructions for an unvented
hot water cylinder with external thermal expansion
PRODUCT DIAGRAMS (CONTINUED)
HEAT PUMP & SOLAR
HEAT PUMP
B
F
G2
G1
D1
G3
E
C1
D3
A
D2
CONNECTIONS:
A
2
2mm Cold feed with dip pipe to diffuser
in bottom of cylinder
B
22m Hot water outlet
C1
Immersion heater
C2
Secondary immersion heater
D1
22mm Solar coil connections
D2
Heat pump connection (Return)
D3
Heat pump connection (Flow)
E
1
/
2
" Temperature relief valve connection
(valve factory-fitted to cylinder)
F
22mm Secondary return –
for cylinders with
capacity’s of 210 litres and above only
G1
Dry stat pocket
G2
Dry stat pocket
G3
Dry stat pockets
CONNECTIONS:
A
2
2mm Cold feed with dip pipe to diffuser
B
22m Hot water outlet
C1
Immersion heater
C2
Secondary immersion heater
D1
22mm Solar coil connections
D2
22mm Solar coil connections (Return)
D3
Heat pump connection (Flow)
E
1
/
2
" Temperature relief valve connection
(valve factory-fitted to cylinder)
F
22mm Secondary return –
for cylinders with
capacity’s of 210 litres and above only
G1
Dry stat pocket
Capacity
(L)
Height
(mm)
Dia
(mm)
A
(mm)
B
(mm)
C1
(mm)
C2
(mm)
D1
(mm)
D2
(mm)
D3
(mm)
E
(mm)
F
(mm)
G1
(mm)
G2
(mm)
G3
(mm)
180
1308
550
390
1308
868
n/a
300
464
808
1080
n/a
355
868
1080
210
1496
550
465
1496
1008
n/a
365
566
910
1270
1150
420
1008
1270
250
1746
550
465
1746
1100
n/a
365
856
1002
1520
1400
420
1100
1520
300
2059
550
465
2059
1173
n/a
365
731
1075
1830
1600
420
1173
1830
Capacity
(L)
Height
(mm)
Dia
(mm)
A
(mm)
B
(mm)
C1
(mm)
D2
(mm)
D3
(mm)
E
(mm)
F
(mm)
G1
(mm)
150
1120
550
681
1120
650
175
519
895
n/a
650
180
1308
550
681
1308
650
175
519
1080
n/a
650
210
1496
550
681
1496
650
175
519
1270
1150
650
250
1746
550
681
1746
650
175
519
1520
1400
650
300
2059
550
681
2059
650
175
519
1830
1600
650
Note:
Please refer to the specification insert sheet for performance details on individual cylinders.
B
F
D2
G1
E
A
C1
D3
40˚
45˚
15˚
30˚
50˚
40˚
45˚
15˚
30˚
50˚