DEX & DBX Installation, Maintenance and User Instructions - April 2011
3
Technical data
Model
DEX 18-27 kW
DBX 18
DBX 21
DBX 24
DBX 27
Rating / Current
18kW (
26A
)
21kW (
30A
)
24 kW (
35A
)
27kW (
39A
)
Power supply
3/PE 380 – 415V AC
3/PE 400V AC
(1)
Hot water (l/min)
Maximum at
L
L
t = 28K
9.2
(2)
10.7
(2)
12.3
(2)
13.8
(2)
Maximum at
L
L
t = 38K
6.8
7.9
9.0
(2)
10.2
(2)
Rated volume (litres)
0.4
Rated pressure
1 MPa (10 bar)
Element type
Bare wire heating system IES
Required specific water
resistance
DEX
>1100
Ω
cm @ 15°C
DBX
>1300
Ω
cm @ 15°C
Maximum inlet temperature
DEX
70°C
DBX
30°C
Switch on flow rate (l/min)
2.5
Maximum flow rate (l/min)
DEX
8.0
(3)
DBX
7.0
(3)
8.0
(3)
8.0
(3)
9.0
(3)
Pressure loss
@ 2.5 l/min
0.2 bar
@ 9.0 l/min
1.3 bar
(4)
Temperature setting range
DEX
20°C – 60°C
DBX
30°C – 60°C
Maximum weight (kg)
3.70
Dimensions H x W x D (mm)
466 x 231 x 97
Water connections
½” BSP
Protection class
IP25
(1)
Maximum 400V for DEX and DBX at 27kW
(2)
Mixed with cold water at the outlet
(3)
Flow rate limited to achieve optimum temperature rise
(4)
Without flow regulator
DBX DEX qxd:Varipoint qxd 20/5/11 13:34 Page 3
