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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
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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

Specifications

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-1-200; SPU-2(W) up to 1500 litres

  • 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

    Specifications

    SPU-2 800plus, 1000plus, 1500plus

    • 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

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