hercal

A British standard 1566 double feed indirect system cylinder. For use in an open vented hot water system.

Primary Sytems
Hercal is not suitable for gravity circulation in its standard form

Hercal is suitable for pumped circulation, and is capable of rehating from 10 to 60oC in 25 mins

Hercal is suitable for sealed primary systems operating at up to 3.5 bar. Primary coils with higher pressure ratings are available.

Reheat times assume that the primary flow is maintained at 82oC at a flowrate of approx 15 l/min

Grade
available in 3 grades to suit the following working head.

Grade 3
10m
Grade 2
15m
Grade 1
25m

Insulation
Hercal has a single thickness of C.F.C free urethane foam lagging as standard, this adds approximately 50mm to the cylinder diameter.
Hercal is available with a double thickness of C.F.C free urethane foam lagging on request, this gives lower heat loss and will add approximately 100mm to the cylinder diameter.

Size of screwed connections
(fitted as standard)

BS Ref.
Secondary Connections
Primary Coil Connections
0-9E
G1" Female
G1" Male
10-11
G11/2 Female
G1/4 Male
12-14
G2" Female
G11/2 Male

Size of compression connections
22mm or 28mm integral compression connections are available at extra cost on sizes 0-11 only. Sizes 12-14 not available.

  • 25 Min Recovery Time*
  • 25mm CFC Free Insulation
  • Manufactured to BS1566

*The secondary return connection (H) is not fitted on sizes 0-9E unless requested.

A side entry immersion heater boss is available on request.

 

BS ref.
Unlagged Diameter
Unlagged Height
Capacity
Heat Surface
Height of connections (from base)
A
B
H
J
M
mm
mm
litres
m2
mm
mm
mm
0
1600
300
96
0.42
1250
100
540
1
900
350
80
0.31
550
100
400
-
600
400
62
0.26
400
100
400
2
900
400
96
0.42
700
100
400
3
1050
400
114
0.50
800
100
470
4
675
450
84
0.37
450
100
300
5
750
450
95
0.48
550
100
340
6
825
450
106
0.53
625
100
370
7
900
450
117
0.61
700
100
400
8
1050
450
140
0.70
800
100
470
9
1200
450
162
0.79
950
100
540
9E
1500
450
206
0.96
1250
100
620
10
1200
500
190
0.88
950
150
540
11
1500
500
245
1.10
1200
150
670
12
1200
600
280
1.18
950
150
540
13
1500
600
360
1.57
1200
150
670
14
1800
600
440
1.97
1350
150
800

© 2006 Range Cylinders Limited.