Sensor Connections - Honeywell Enraf VITO 762 Installation Manual

3.3

Sensor connections

The electronic circuits of the 762 VITO Interfaces are protected against electrical static
discharge during transport and storage by metal jumpers placed on the temperature probe
connectors. A dummy resistor of 10 is placed between the red and brown wires (VITO-
MTT & VITO-LT) to detect the absence of a temperature probe.
There is also placed a dummy capacitor on the water probe connectors to detect the
absence of a water probe. Refer to figure 11.
Depending on the type of probe, the jumpers and dummy resistor and/or the dummy
capacitor must be removed. Refer to table below.
Type of probe
764/767 VITO temperature
probe
765 VITO water probe
766/768 VITO temperature &
water probe
RTD/MRT/361 MPT probe
365 MPT temperature &
water probe
 Cut the temperature and water probe wiring to approximate length
Note:
It is recommended to loop the wires one time and strip each wire
approximate 10 – 12 mm (
Use the proper tools for removal of the insulation and make sure the
copper core is no carved.
Jumpers and dummy
resistor on temperature
probe connectors
do not remove
front module (temp.):
rear module (water):
do not remove
6
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Installation guide 762 VITO interfaces & VITO probes
remove
remove
remove
remove
Figure 11 Location of jumpers and
dummy resistor/capacitor
– ½").
Electrical installation
Dummy capacitor on
water probe
connectors
do not remove
remove
remove
n.a.
front module (temp.):
n.a.
rear module (water):
remove
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