APR 2018
11
Hot Water Energy Storage
Unvented Cylinders
GB & NI
Installation & Maintenance Instructions for an unvented
hot water cylinder with external thermal expansion
PRODUCT DIAGRAMS
DIRECT
B
F
C2
C1
E
A
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 Boiler coil connections
D2
22mm Solar coil connections
E
1
/
2
“ Temperature relief valve
(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
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
160
745
195
n/a
n/a
n/a
520
n/a
n/a
n/a
120
933
550
160
933
195
510
n/a
n/a
705
n/a
n/a
n/a
150
1120
550
160
1120
195
610
n/a
n/a
895
n/a
n/a
n/a
180
1308
550
160
1308
195
710
n/a
n/a
1080
n/a
n/a
n/a
210
1496
550
160
1496
195
810
n/a
n/a
1270
1150
n/a
n/a
250
1746
550
160
1746
195
950
n/a
n/a
1520
1400
n/a
n/a
300
2055
550
160
2055
195
1830
n/a
n/a
1687
1600
n/a
n/a
40˚
45˚
15˚
30˚
50˚
SLIMLINE DIRECT
B
F
C2
C1
E
A
CONNECTIONS:
A
2
2mm Cold feed with dip pipe to diffuser
in bottom of cylinder
B
22m Hot water outlet
C1
Primary immersion heater
C2
Secondary immersion heater
D1
22mm Boiler coil connections
D2
22mm Solar coil connections
E
1
/
2
“ Temperature relief valve
(factory-fitted to cylinder)
F
22mm Secondary return – for cylinders with
a capacity of 210 litres only
G1
Dry stat pocket
G2
Dry stat pocket
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)
60
716
478
175
716
210
n/a
n/a
n/a
483
n/a
n/a
n/a
90
1091
478
175
1091
210
610
n/a
n/a
858
n/a
n/a
n/a
120
1279
478
175
1279
210
710
n/a
n/a
1046
n/a
n/a
n/a
150
1467
478
175
1467
210
810
n/a
n/a
1234
n/a
n/a
n/a
180
1717
478
175
1717
210
910
n/a
n/a
1484
n/a
n/a
n/a
210
2030
478
175
2030
210
1110
n/a
n/a
1797
1500
n/a
n/a
40˚
45˚
15˚
30˚
50˚