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B Set the jumper to the right position (
VT [°F(°C)]
Fig. 4
Setting the jumper
P
Output in % of the rated cascade output [%]
VT
System supply water temperature [°F | °C]
NOTE:
B Minimum voltage for boilers to fire: 0.6 V
System version 3: 0 - 10 V input, controlling the system
supply water temperature
In conjunction with a building management system with
0 - 10 V output, the system supply water temperature
can be controlled based on the voltage input (
B Set the jumper to the left position (
fig. 4).
P [%]
6 720 617 648-001.1TD
fig. 5).
fig. 4).
Details about the ICM module | 9
[°F (°C)] VT
194 (90)
167 (75)
140 (60)
113 (45)
86 (30)
59 (15)
0
0
2
Fig. 5
Correlation between the input voltage and the
system supply water temperature
U
Input voltage [V DC]
VT
System supply water temperature [°F | °C]
NOTE:
B Minimum voltage for boilers to fire: 0.6 V
System version 4: Heating control with ON/OFF
contact
In conjunction with a control unit with ON/OFF contact,
the ICM module controls the cascade output when the
dry contact is closed by ramping up one boiler after
another to maximum fire.
The ON/OFF contact of the heating system controls
must be a dry contact.
2.7.8
Connection of additional modules of the
Hydronic 3
Any additional modules (
be connected to the BUS of the heating controller.
U [V DC]
4
6
8
10
6 720 617 648-10.1TD
fig. 6, [21], page 10), must
6 720 643 835 (2011/06)
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