3.4. Operating conditions
Dorchester
DR-SG
XX-210
Dorchester
DR-SG
XX-356
Dorchester
DR-SG
XX-538
Max DHW temperature setting
°C
80
80
80
DHW safety temperature
°C
92
92
92
Max service pressure
hPa
(bar)
7000
(7)
7000
(7)
7000
(7)
Water content
L
210
356
538
Weight without water
kg
96
142
240
Acoustic power at P
max
(Lw) *
dB (A)
63.6
75.4
77.9
Acoustic pressure 1 m at P
max
(Lp)
dB (A)
52
64
66
Installation premises temperature (min /
max)
°C
5 / 40
5 / 40
5 / 40
Installation premises relative humidity
between 15%
and 95%
between 15%
and 95%
between 15%
and 95%
Protection level
IP 21
IP 21
IP 21
Maximum installation altitude
m
2000
2000
2000
* The sound power level is a laboratory measurement of the emitted sound power but contrary to the noise
level, it doesn't correspond to the perceived measurement.
3.5. Electrical connection
Dorchester
DR-SG XX-210
Dorchester
DR-SG XX-356
Dorchester
DR-SG XX-538
20
25
30
35
50
60
70
80
100
120
Electrical power
supply
V
230 V AC (+10%
-15%), 50Hz
230 V AC (+10%
-15%), 50Hz
230 V AC (+10% -15%),
50Hz
Electrical power
consumed at
Qn (excluding
accessory)
W
34
50
68
79
197
266
70
90
160
270
Electrical power
consumption in
standby mode
W
3.6
3.6
3.6
3.7
3.7
3.7
4.5
4.5
4.5
4.5
Maximum length of
sensor cables
m
DHW storage tank
sensor: 6m
DHW storage tank
sensor: 6m
DHW storage tank sensor:
6m
Terminal output
power
V
230V AC (+10%,
-15%)
230V AC (+10%,
-15%)
230V AC (+10%, -15%)
A
From 5 mA to 1 A
From 5 mA to 1 A
From 5 mA to 1 A
Fuses
T6.3H 250V x 2
T6.3H 250V x 2
T6.3H 250V x 2
Page 22 / 104
00U07337760-A
DORCHESTER DR-SG -
Installation, Operation and Maintenance