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 Ωcm @ 15°C
DBX >1300 Ωcm @ 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
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