Sensor Installation
If the unit is equipped with freeze sensor, it
can be found attached to the leaving water
pipe as shown in
Figure 4
.
Figure 4 - Freeze Sensor's Previous Location, Older
Versions
The new controller has a different trip point
for sensing freeze condition, and therefore
the freeze sensor must be relocated to the
refrigerant line as shown in
Figure 5
.
Figure 5 - Freeze Sensor's New Location
Once the sensor has been relocated use
wire ties and cork tape to secure and
insulate sensor as shown below in
Figure 6
,
Figure 7
, and
Figure 8
.
If this is a new install (no previous sensor)
the wires must be led into the electrical box
and connected to the UPM across the
FREEZE connections as shown in
Figure 9
.
IMPORTANT:
If unit is equipped with factory installed
DDC, two sensors can be found. Make
sure that the DDC leaving water sensor
remains in place as it may cause
nuisance alarms in the building
automation system.
8
Содержание 8733 800-259
Страница 1: ...1 8733 800 259 KIT Replacement Kit 641 176 641 187 641 225 641 244 IOM...
Страница 11: ...11...
Страница 12: ...12 Figure 9 UPM Typical Wiring Components...
Страница 13: ...13 Figure 10 UPM Operation Flow Chart...
Страница 14: ...14 6720220404 REV 8 12...