Unvented Cylinders
Unvented Cylinders Solfex are proud to offer a complete range of unvented stainless steel cylinders specifically for heat pump applications providing mains pressure domestic hot water. Utilising an already well established stainless steel unvented hot water cylinder, this product has been developed to maximise the lower temperatures available from the heat pump. The heat exchanger is a totally new design. It consists of a multi-pass corrugated stainless steel tube in parallel to reduce the pressure loss whilst maximising the heat exchange. Many medium to large heat pumps need heat exchangers in the store that will cope with the higher flow rates associated with primary temperatures that are typically 50˚C or 60˚C. Due to the fact that many heat pumps will not raise the stored water temperature to 60˚C, which is necessary to prevent the growth of legionella, the Solfex range of cylinders are supplied with an immersion heater and a thermostat.
Duplex Stainless Steel The latest high specification Duplex stainless steel resists all forms of corrosion including crevice and stress whilst its high mechanical strength gives it durability. The very latest automated welding procedures along with full post weld treatments guarantee welds that are as strong as the metal. All cylinders are factory pressure tested to a full 12 bar which is four times the normal working pressure.
Corrugated Stainless Steel Coil
Quality Standard
Solfex cylinders use a high heat transfer corrugated tube heat exchanger to give a 20% faster recovery than plain tube. It is also lighter and stronger than plain tube making the vessel the lightest and easiest to handle on site.
All Solfex cylinders are manufactured in accordance with BS EN 12897 the specification for unvented water storage vessels. The cylinders have been tested by NSF-WRc and WRAS, and found to comply with Building Regulations G3 and Water Regulations.
Heat Loss All Solfex cylinders are manufactured using the very latest HCFC free EnviroFoam insulation. This has an Ozone Depletion Potential (ODP) of zero and an industry leading Global Warming Potential (GWP) of 0.7. Tests show that the 50mm of EnviroFoam insulation injected into the case and covering both domes achieves astonishingly low levels of heat loss, which ensures it is fully compliant with 2010 Part L requirements for both new build and replacement cylinders.
25 Years Guarantee The 25 year guarantee underlines the confidence the manufacturer has in its own products.
In performance, it complies with the requirements of BS EN 806-1 to 5 and meets the NHBC criteria for domestic properties. Our manufacturing partner also operates a quality management system audited and accepted by the BSI in accordance with BS EN ISO 9001:2008.
Special features •
The latest and highest quality Duplex Stainless Steel
•
25 year guarantee.
•
Fast reheat rate from its purpose designed low resistance coil.
•
One of the highest insulation ratings on offer today.
•
The Stainless Lite HP CYL is supplied with all the necessary connections including a dry thermostat pocket.
HPCYL180 Energy efficiency class
HPCYL210
HPCYL250
HPCYL300
HPCYL400
B
C
C
C
D
Heat Loss
watts
54
65
75
85
118
Capacity - total volume
litres
180
210
250
300
400
Volume heated by IH
litres
158
199
238
279
372
Weight empty / full
kg
33 / 213
38 / 248
43 / 293
58 / 358
62 / 462
Pressure regulating valve setting
bar
3
3
3
3
3
Expansion relief valve setting
bar
4.5
4.5
4.5
4.5
4.5
Temperature setting (P&T Valve)
°C
95
95
95
95
95
Pressure setting (P&T Valve)
bar
6.0
6.0
6.0
6.0
6.0
Expansion vessel size (volume)
litres
18
24
24
35
2 x 24
Expansion vessel initial charge pressure
bar
3
3
3
3
3
Height
mm
1305
1493
1743
1990
2030
Diameter
mm
550
550
550
550
630
Hot supply
mm
1352
1540
1790
2035
2080
P&T valve
mm
1047
1235
1485
1731
1784
22mm secondary return
mm
-
1127
1377
1577
1577
28mm primary flow
mm
1043
1230
1250
1270
1660
HP Control thermostat
mm
440
494
577
677
668
28mm primary return
mm
273
260
280
300
330
Cold feed
mm
259
258
258
258
285
3kW immersion heater
mm
217
217
217
217
245
Dual control / Overheat thermostat
mm
440
494
577
677
668
Primary heat exchanger surface area 1
m2
2.5
3
3
3
4
Primary heat exchanger thermal rating 1
kW
16.74
17.91
15.93
13.18
18.87
Primary heat exchanger pressure loss 1
bar
0.04
0.032
0.032
0.032
0.07
Heat up time from 15°C to 50°C 2
min
18.02
20.47
31.57
42.5
37.1
°C
46.95
46.77
48.44
42.06
47.32
Average domestic hot water temp.
1
2 Measured at 0.25 l/s primary flow rate and at 55°C flow temperature
All cylinders are supplied with:
Notes
•
Combination inlet group incorporating pressure reducing valve, strainer, check valve, balance cold take off point, expansion relief valve and expansion vessel connection points.
•
Potable expansion vessels c/w flexible hose and wall bracket
•
Tundish
•
Dual control thermostat and combined overheat thermostat (x2)
1 Measured at 0.25 l/s primary flow rate.
1. Recovery time based on primary coil/I.H. Duty (ie assumes the heat pump outside is adequate)
Model Selection Guide Number of Bedrooms in property
Model
1
HPCYL180
•
Two port (28mm) zone valve for primary circuit
2
HPCYL210
•
Wiring junction box for primary system
3
HPCYL250
4
HPCYL300
5
HPCYL400
6
HPCYL400
Solar Thermal Input and Slimline Cylinders available on request
Duplex Stainless Steel The latest high specification Duplex stainless steel resists all forms of corrosion including crevice and stress whilst its high mechanical strength gives it durability. The very latest automated welding procedures along with full post weld treatments guarantee welds that are as strong as the metal. All cylinders are factory pressure tested to a full 12 bar which is four times the normal working pressure.
Corrugated Stainless Steel Coil
Quality Standard
Solfex cylinders use a high heat transfer corrugated tube heat exchanger to give a 20% faster recovery than plain tube. It is also lighter and stronger than plain tube making the vessel the lightest and easiest to handle on site.
All Solfex cylinders are manufactured in accordance with BS EN 12897 the specification for unvented water storage vessels. The cylinders have been tested by NSF-WRc and WRAS, and found to comply with Building Regulations G3 and Water Regulations.
Heat Loss All Solfex cylinders are manufactured using the very latest HCFC free EnviroFoam insulation. This has an Ozone Depletion Potential (ODP) of zero and an industry leading Global Warming Potential (GWP) of 0.7. Tests show that the 50mm of EnviroFoam insulation injected into the case and covering both domes achieves astonishingly low levels of heat loss, which ensures it is fully compliant with 2010 Part L requirements for both new build and replacement cylinders.
25 Years Guarantee The 25 year guarantee underlines the confidence the manufacturer has in its own products.
In performance, it complies with the requirements of BS EN 806-1 to 5 and meets the NHBC criteria for domestic properties. Our manufacturing partner also operates a quality management system audited and accepted by the BSI in accordance with BS EN ISO 9001:2008.
Special features •
The latest and highest quality Duplex Stainless Steel
•
25 year guarantee.
•
Fast reheat rate from its purpose designed low resistance coil.
•
One of the highest insulation ratings on offer today.
•
The Stainless Lite HP CYL is supplied with all the necessary connections including a dry thermostat pocket.
HPCYL180 Energy efficiency class
HPCYL210
HPCYL250
HPCYL300
HPCYL400
B
C
C
C
D
Heat Loss
watts
54
65
75
85
118
Capacity - total volume
litres
180
210
250
300
400
Volume heated by IH
litres
158
199
238
279
372
Weight empty / full
kg
33 / 213
38 / 248
43 / 293
58 / 358
62 / 462
Pressure regulating valve setting
bar
3
3
3
3
3
Expansion relief valve setting
bar
4.5
4.5
4.5
4.5
4.5
Temperature setting (P&T Valve)
°C
95
95
95
95
95
Pressure setting (P&T Valve)
bar
6.0
6.0
6.0
6.0
6.0
Expansion vessel size (volume)
litres
18
24
24
35
2 x 24
Expansion vessel initial charge pressure
bar
3
3
3
3
3
Height
mm
1305
1493
1743
1990
2030
Diameter
mm
550
550
550
550
630
Hot supply
mm
1352
1540
1790
2035
2080
P&T valve
mm
1047
1235
1485
1731
1784
22mm secondary return
mm
-
1127
1377
1577
1577
28mm primary flow
mm
1043
1230
1250
1270
1660
HP Control thermostat
mm
440
494
577
677
668
28mm primary return
mm
273
260
280
300
330
Cold feed
mm
259
258
258
258
285
3kW immersion heater
mm
217
217
217
217
245
Dual control / Overheat thermostat
mm
440
494
577
677
668
Primary heat exchanger surface area 1
m2
2.5
3
3
3
4
Primary heat exchanger thermal rating 1
kW
16.74
17.91
15.93
13.18
18.87
Primary heat exchanger pressure loss 1
bar
0.04
0.032
0.032
0.032
0.07
Heat up time from 15°C to 50°C 2
min
18.02
20.47
31.57
42.5
37.1
°C
46.95
46.77
48.44
42.06
47.32
Average domestic hot water temp.
1
2 Measured at 0.25 l/s primary flow rate and at 55°C flow temperature
All cylinders are supplied with:
Notes
•
Combination inlet group incorporating pressure reducing valve, strainer, check valve, balance cold take off point, expansion relief valve and expansion vessel connection points.
•
Potable expansion vessels c/w flexible hose and wall bracket
•
Tundish
•
Dual control thermostat and combined overheat thermostat (x2)
1 Measured at 0.25 l/s primary flow rate.
1. Recovery time based on primary coil/I.H. Duty (ie assumes the heat pump outside is adequate)
Model Selection Guide Number of Bedrooms in property
Model
1
HPCYL180
•
Two port (28mm) zone valve for primary circuit
2
HPCYL210
•
Wiring junction box for primary system
3
HPCYL250
4
HPCYL300
5
HPCYL400
6
HPCYL400
Solar Thermal Input and Slimline Cylinders available on request
