Bryant 559K 08 Series Service And Maintenance Instructions page 27

Supply Air
Smoke Detector
Fig. 41 — Typical Supply Air Smoke Detector Sensor
Location
RETURN AIR SMOKE DETECTOR SENSOR WITHOUT
ECONOMIZER
The sampling tube is located across the return air opening on the
unit basepan. See Fig. 42 and 43. The holes in the sampling tube
face downward, into the return air stream. The sampling tube is
connected through tubing to the return air sensor that is mounted
on a bracket high on the partition between return filter and control-
ler location. The sensor is shipped in a flat-mounting location. In-
stallation requires that this sensor be relocated to its operating lo-
cation and the tubing to the sampling tube be connected. See in-
stallation steps.
Return Air
Smoke Detector
(As Shipped)
Fig. 42 — Typical Return Air Smoke Detector
Location (size 8-14 units)
Fig. 43 — Typical Return Air Smoke Detector
Location (size 16 units)
RETURN AIR SMOKE DETECTOR SENSOR WITH
ECONOMIZER
The sampling tube is inserted through the side plates of the econo-
mizer housing, placing it across the return air opening on the unit
basepan. See Fig. 44. The holes in the sampling tube face down-
ward, into the return air stream. The sampling tube is connected
using tubing to the return air sensor mounted on a bracket high on
the partition between return filter and controller location. The sen-
sor is shipped in a flat-mounting location. Installation requires the
sensor be relocated to its operating location and the tubing to the
sampling tube be connected. See installation steps below.
Fig. 44 — Return Air Sampling Tube Location (View
reoriented to show opposite side for clarity.)
27
Return Air
Smoke Detector
(As Shipped)
Return Air
Sampling Tube