Buffer cylinder SPU-2 (W) up to 1500 litres
Buffer cylinder for central heating backup with removable thermal insulation, smooth tube heat exchanger and W variants
SPU-1200
SPU-2 (W)500
SPU-2 (W)800
SPU-2 (W)1000
SPU-2 (W)1500
SPU-2800plus
SPU-21000plus
SPU-21500plus
Overview of benefits
Type SPU-2W with steel smooth tube heat exchanger
Type SPU-2 without indirect coils
Steel buffer cylinder with quality certificate
Eight 1 ½” connections (PLUS variants: 2”) and four ½” connections in the cylinder wall
Low heat losses due to 100 mm of high-grade thermal insulation
Removable thermal insulation for easier transport into the installation room
PLUS variants: In addition to the 2“ connections, also fitted with an elevated connecting pipe in the flow line to make better use of the buffer capacity
5 year statutory warranty on the floor standing cylinder
2 years on electrical and moving parts
SPU-1-200; SPU-2(W) up to 1500 litres
Model type
SPU-1-200
SPU-2(W)-500
SPU-2(W)-800
SPU-2(W)-1000
SPU-2(W)-1500
General data
Energy efficiency class
C
C
-
-
-
SPU-1 cylinder volume
litres
200
-
-
-
-
SPU-2-W cylinder volume
litres
-
480
780
960
1500
SPU-2 cylinder volume
litres
-
490
795
980
1530
SPU-1 standby heat loss
kWh/24 h
1.55
-
-
-
-
SPU-2-W standby heat loss
kWh/24 h
-
2.029
2.59
3.02
3.67
Connections (5 pce)
Rp
2“
-
-
-
-
Connections (8 pce)
Rp
-
1½“
1½“
1½“
1½“
Sensor well
Rp
½“
-
-
-
-
Thermometer (4 pce)
Rp
-
½“
½“
½“
½“
Venting
Rp
1“
1½“
1½“
1½“
1½“
Drain
Rp
½“
-
-
-
-
Indirect coil connection
Rp
-
1“
1“
1“
1“
Indirect coil surface area
m²
-
1.8
2.4
3
3.6
Indirect coil capacity
litres
-
11
15
19
22
Max. operating pressure primary / secondary
bar
- / 3
10/10
10/10
10/10
10/10
Max. operating temperature primary / secondary
°C
- / 95
110/95
110/95
110/95
110/95
Dimensions
Connection / thermometer / sensor strip
A mm
256
220
260
310
380
Connection / thermometer / sensor strip
B mm
460
620
630
745
825
Sensor well
C mm
358
-
-
-
-
Connection / thermometer / sensor strip
C mm
-
1010
1030
1250
1350
Connection / thermometer / sensor strip
D mm
910
1390
1430
1710
1760
Indirect coil return
E mm
-
220
260
310
375
Indirect coil flow
F mm
-
715
845
1030
1175
Height excl. thermal insulation / air vent valve
G mm
-
1640
1700
2050
2150
Height including thermal insulation
H mm
1140
1725
1785
2135
2235
Diameter including thermal insulation
I mm
610
850
990
990
1200
Diameter excl. thermal insulation
J mm
-
650
790
790
1000
Drain
K mm
85
-
-
-
-
Height when tilted, including thermal insulation
mm
1310
1910
2050
2360
2540
Height when tilted, excl. thermal insulation
mm
-
1670
1750
2090
2270
Weight
SPU-1
kg
48
-
-
-
-
SPU-2-W
kg
-
113
133
149
256
SPU-2
kg
-
87
109
130
205
Specifications
SPU-2 800plus, 1000plus, 1500plus
Type
SPU-2 800plus
SPU-2 1000plus
SPU-2 1500plus
Cylinder volume
l
795
980
1530
Connections (8) SPU-2
Rp
1 1/2
1 1/2
1 1/2
Connections (8) SPU-2 plus
Rp
2
2
2
Diameter including thermal insulation
mm
990
990
1200
Diameter excl. thermal insulation
mm
790
790
1000
Total height including thermal insulation
mm
1785
2135
2235
Height when tilted, including thermal insulation
mm
2050
2360
2540
Height when tilted, excl. thermal insulation
mm
1750
2090
2270
Weight
kg
109
130
205