78260-01NM Duct Sensor
Where appropriate refer to the as fitted wiring diagrams (if supplied), general notes,
EMC compliance, cable types and loop circuit connections.
The duct sensor consists of a housing assembly and probes for installation
on to a ventilation duct.
a)
Identify the packages labelled DUCT SENSOR 78260-01NM and
PROBES FOR DUCT HOUSING 7908-05 and check that is has the
following parts:
Component
Quantity
Duct Housing
1
Plastic Bungs
2
Lock Nuts
2
Inlet Probe
1
Exhaust Probe
1
b)
Mark out the position of the two probe hole centres on the duct.
NOTE: It is important to take into account the direction of the
air flow in the duct and probe orientations.
c)
Drill or punch the two probe holes 35mm diameter in the duct.
d)
Fit the lock nut onto the threaded end of each probe and fit the
respective probe into its coupling on the duct housing. Rotate each
probe to face the required direction in the duct and secure the lock
nuts to prevent probe from rotating.
e)
Insert the probes into the duct until they reach the opposite wall and
measure the gap between the duct housing flange and the duct wall.
f)
Remove the probes from the duct and cut the probe ends by the
measured gap + 10mm.
g)
Fit the plastic bungs into the probe ends.
h)
Insert the probes into the duct and secure the duct housing using the
fixing holes on the flange to provide support to a full assembly
weight of 3.3kg.
i)
Terminate each cable at the entry and connect the appropriate cable
ends to the terminal block.
78260-01NM Duct Sensor
78910-03NM Issue 2_10/96
11-1
Senator II Installation Manual