Design and technology
3
D e s i g n a n d t e c h n o l o g y
3.1
Technical data for the EcoStock 300-800 steel enamelled with big heat
exchanger (Z20985M – Z21050M – Z20986M – Z21051M)
Steel enamelled with big heat exchanger
Type
EcoStock
Total volume
Drinking water capacity
Lower HE capacity
Total height with insulation
Diameter with insulation
Diameter without insulation
Tilt dimensions with insulation
Weight (empty)
Max. operating pressure – heater
Test pressure – DHW
Max. operating pressure – DHW
Test pressure – DHW
Max. operating temperature – heater
Max. operating temperature – DHW
Lower HE surface area
Insulation thickness
Energy efficiency class
Stand-by heat energy consumption
Pressure loss – heater
Volume flow – heater
Corrosion protection
Connections
1)
F/TH
Sensor/thermometer
WW
Hot water
AN
Anode
Air vent
F/TH
Sensor/thermometer
FL
Upper flange
AN
Anode below
FL
Lower flange
Z
Circulation
HZVL
Heating flow
F/TH
Sensor/thermometer
HZRL
Heating return
KW
Cold water
1) Hot water sensor connection
Total volume (including all fixtures, theoretically) – gross.
Actual contents (so called nominal capacity) drinking water, solar, heating – net.
22.12.2017
Copyright 2017 by: WATERKOTTE GmbH. Subject to change without notice.
Unit
Z20985M
Z21050M
300
[l]
326
[l]
305
[l]
21,4
[mm]
1570
[mm]
660
[mm]
-
[mm]
1710
[kg]
149
[bar]
10
[bar]
15
[bar]
10
[bar]
15
[°C]
95
[°C]
95
[m²]
3,5
[mm]
50
C
[kWh/d]
1,8
[mbar]
35
[m³/h]
1,6
Enamelled pursuant to DIN 4753, magnesium
[mm]
1570
[mm]
1570
[mm]
1570
[mm]
[mm]
1350
[mm]
-
[mm]
[mm]
295
[mm]
1200
[mm]
920
[mm]
-
[mm]
240
[mm]
140
21 / 60
Z20986M
Z21051M
390
500
415
496
388
464
27,2
32,5
1500
1740
760
760
-
-
1690
1900
182
209
10
10
15
15
10
10
15
15
95
95
95
95
4,4
6
50
50
C
C
2,4
2,6
53
84
1,3
1,6
anode
Connection height
1500
1740
1500
1740
1500
1740
1250
1490
-
-
310
310
1150
1400
1500
1185
-
600
255
255
145
145
800
805
771
34,5
1990
990
790
2020
284
10
15
10
15
95
95
6
95
C
3,1
67
1,5
1940
1765
1940
1940
1650
1400
690
350
1400
1195
660
275
175
Z21339