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Sensor availability
The following table shows the sensor availability for all DHW control modes. Sensors not mentioned in the table
are optionally available for other functions
DHW Mode
0 N.A.
T_Supply
O
T_Return
O
T_DHW
---
T_Outdoor
O
0-10 Volt
O
Water Flow DHW
O
RT Switch
O
M = Mandatory, O = Optional, --- = Disabled, N.A. = Not Available.
DHW mode 0 – Do not use
DHW mode 1 – Single and cascaded Water Heaters.
DHW mode 2 to 8 – Do not use.
NTC sensor curve
All NTC sensors are according to this characteristic: NTC 10K@25°C (77 °F) B3977k 3%@60°C (140°F)
Temperature
Resistance
°C
°F
Ω
-30
-22
175203
-25
-13
129289
-20
-4
96360
-15
5
72502
-10
14
55047
-5
23
42158
0
32
32555
5
41
25339
10
50
19873
15
59
15699
Programmable in- and outputs
It is possible to re-program some in- and outputs to other functions. To do this use below list and go to:
Menu\settings\water heater settings\(installer password)\water heater parameters
water heater pa-
name
rameter
(117)
Prog. Input 2.
(118)
Prog. Input 3.
(122)
Prog. Input 7.
(124)
Prog. Input RT.
(125)
Prog. Output 1.
(126)
Prog. Output 2.
(127)
Prog. Output 3.
(128)
Prog. Output 4.
To all outputs following applies: maximum current 2 Amp each output.
Total output of all currents combined maximum 3.5 Amp.
The allowed inrush current of the 3-way valve and/or pumps is maximum 8 Amp.
1
2 N.A.
3 N.A.
M
M
O
O
O
O
M
---
M
O
O
O
O
O
O
O
O
O
O
M
O
Temperature
Resistance
°C
°F
Ω
20
68
12488
25
77
10000
30
86
8059
35
95
6535
40
104
5330
45
113
4372
50
122
3605
55
131
2989
60
140
2490
65
149
2084
default setting
2
2
3
1
4
0
6
18
E93.1804.014
4 N.A.
5 N.A.
6 N.A.
M
O
M
M
O
---
M
M
M
O
O
---
O
O
O
O
M
O
O
O
O
Temperature
Resistance
°C
°F
Ω
70
158
1753
75
167
1481
80
176
1256
85
185
1070
90
194
915
95
203
786
100
212
677
105
221
586
110
230
508
115
239
443
description
DHW flow switch
Gas pressure switch
Cascade sensor
room thermostat on
System pump
External Igniter
Alarm semiconductor output
3-way Valve DHW
7 N.A.
8 N.A.
M
M
O
M
---
M
---
O
O
O
M
M
O
O
Temperature
°C
°F
120
248
125
257
130
266
135
275
140
284
145
293
150
302
155
311
160
320
165
329
terminal
LV 16-17
LV 24-25
LV 3-4
LV 12-13
HV 4-5
separate connector
HV 10-11
HV 3-2-1
Resistance
Ω
387
339
298
262
232
206
183
163
145
130
71
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