APR 2018
14
Hot Water Energy Storage
Unvented Cylinders
GB & NI
Installation & Maintenance Instructions for an unvented
hot water cylinder with external thermal expansion
PRODUCT DIAGRAMS (CONTINUED)
Note:
Please refer to the specification insert sheet for performance details on individual cylinders.
INDIRECT
B
F
H2
C2
C1
G1
H1
D1
E
A
D1
CONNECTIONS:
A
2
2mm Cold feed with dip pipe to diffuser
in bottom of cylinder
(1” Female BSP connection on
400 & 500L model with no deffuser)
B
22m Hot water outlet
(1” Female BSP connection on 400 & 500L model)
C1
Immersion heater
C2
Secondary immersion heater -
250 litre & above only
D1
22mm Boiler coil connections
D2
22mm Solar coil connections
E
1
/
2
“ Temperature relief valve - 90L to 300L
3/₄” Temperature relief valve - 400L & 500L
(factory-fitted to cylinder)
F
22mm Secondary return – for cylinders with
a capacity of 210 litres and above only
G1
Dry stat pocket
G2
Dry stat pocket
H1 & H2
Destratification connections
400 & 500 litre cylinders only.
H1
(mm)
H2
(mm)
400
197
1247
500
197
1547
Capacity
(L)
Height
(mm)
Dia
(mm)
A
(mm)
B
(mm)
C1
(mm)
C2
(mm)
D1
(mm)
D2
(mm)
E
(mm)
F
(mm)
G1
(mm)
G2
(mm)
90
745
550
390
745
330
n/a
290
n/a
520
n/a
385
n/a
120
933
550
390
933
330
n/a
290
n/a
705
n/a
385
n/a
150
1120
550
465
1120
370
n/a
330
n/a
895
n/a
425
n/a
180
1308
550
465
1308
370
n/a
330
n/a
1080
n/a
425
n/a
210
1496
550
465
1496
405
n/a
365
n/a
1270
1150
465
n/a
250
1746
550
465
1746
405
950
365
n/a
1520
1400
560
n/a
300
2055
550
465
2055
405
1100
365
n/a
1830
1600
660
n/a
400
1657
693
197
1657
767
1057
692
n/a
1387
1347
827
n/a
500
1946
693
197
1946
767
1357
692
n/a
1687
1647
827
n/a
25˚
40˚
45˚
35˚
15˚
50˚
10˚