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Sensor availability
S
ENSOR AVAILABILITY
The following table shows the sensor availability for all CH and DHW control modes. Sensors not mentioned in
the table are optionally available for other functions
0
T_Supply
M
T_Return
O
T_DHW
O
T_Outdoor
---
0-10 Volt
O
Water Flow DHW
O
RT Switch
M
M = Mandatory, O = Optional, --- = Disabled.
CH mode 0 – Central Heating demand with thermostat control
CH mode 1 – CH with an outdoor temperature reset and thermostat control
CH mode 2 – Central Heating with full outdoor temperature reset
CH mode 3 – Central Heating with permanent heat demand
CH mode 4 – Central Heating with analog input control of setpoint
CH mode 5 – Central Heating with analog input control of power output
0
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 – No Domestic Hot Water
DHW mode 1 – Storage with sensor
DHW mode 2 – Storage with thermostat
DHW mode 3 – Instantaneous water heating with plate heat exchanger, flow switch and DHW-out sensor
DHW mode 4 – Instantaneous water heating with plate heat exchanger and DHW-out sensor
DHW mode 5 – Instantaneous water heating with plate heat exchanger, DHW-out sensor and rotary switch
DHW mode 6 to 8 N.A.
S
ENSOR AVAILABILITY
If the installed appliance is a VGH-CO combi boiler, the available sensors for the various CH modes are identical
to the data presented in Table 10.5. A VGH-combi boiler always has its DHW mode set to 5. Other DHW modes
are not available for Combi-boilers. Table 10.6 shows the available sensors for this mode.
NTC sensor curve
All NTC sensors are according to this characteristic: NTC 10K@25°C B3977k
Temperature
Resistance
(Ω)
°C
°F
-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
Table 10.7
86
VGH-CH
BOILERS
CH Mode
1
2
3
M
M
M
O
O
O
O
O
O
M
M
O
O
O
O
O
O
O
M
M
M
DHW Mode
1
2
3
M
M
O
O
O
O
M
---
M
O
O
O
O
O
O
O
O
O
O
M
O
VGH-CO
BOILERS
Resistance
Temperature
(Ω)
°C
°F
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
E93.1901EN032 Installation and Service Manual SlantFin VGH-CH / CO
4
5
M
M
O
O
O
O
O
M
M
O
---
M
---
4
5
6 N.A.
7 N.A.
M
O
M
M
O
---
M
M
M
O
O
---
O
O
O
O
M
O
O
O
O
Resistance
Temperature
°C
°F
70
158
75
167
80
176
85
185
90
194
95
203
100
212
105
221
110
230
115
239
Table 10.5
8 N.A.
M
M
O
M
---
M
---
O
O
O
M
M
O
O
Table 10.6
Temperature
(Ω)
°C
°F
1753
120
248
1481
125
257
1256
130
266
1070
135
275
915
140
284
786
145
293
677
150
302
586
155
311
508
160
320
443
165
329
Resistance
(Ω)
387
339
298
262
232
206
183
163
145
130
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