Installation; Check Package Contents; Return Air Smoke Detector Installation; 48/50A Units - Carrier 48/50A020-060 Installation Instructions Manual

INSTALLATION

When installing the smoke detector in the unit, follow all
local codes. Damage to unit may result.
Check Package Contents —
aging and inspect shipment for damage. If any damage is
found, file a claim with the shipping agent immediately. If any
item is missing or any part does not assemble properly, notify
your Carrier distributor.
Table 1 lists the accessory package contents. Figure 1 shows
the smoke detector.
Table 1 — Accessory Package Contents — Return
Air Smoke Detector (CRSMKDET002C00)
ITEM
Smoke Detector with Cover
Sampling Tube (long)
Sampling Tube Filters
Test Magnet
Foam Gaskets
Screw, no. 6 Self Tapping
Tube End Plug (large)
Sampling Tube Support Bracket
Screw, 8-18 3 / -in. Pan Head
4
1 5
Screw, / AB-14 / -in.
4 8
Snap Bushing
Harness Assembly
Smoke detector bracket 50ZZ500420
Sampling tube bracket 50ZZ500421
Sampling tube bracket 50ZZ500431
(48/50Z030-050 with Power Exhaust)

Return Air Smoke Detector Installation

Prior to installation of this accessory, make sure all power
is disconnected to the unit and locked out. Failure to dis-
connect power supply prior to servicing may result in seri-
ous injury.
NOTE: For horizontal applications it is easiest to install the
smoke detector prior to making duct connections.
PLASTIC
SAMPLING TUBE
PLASTIC SAMPLING TUBE
SELF-TAPPING SCREW
PHOTO
DETECTOR BOARD
DETECTOR COVER
Remove accessory pack-
QUANTITY
1
1
2
1
2
2
1
1
2
2
1
1
1
1
1
FOAM
GASKETS
SAMPLING TUBE
FILTERS
Fig. 1 — Smoke Detector
48/50A Units —
installed in the predrilled holes located in the indoor section
above the auxiliary control box.
1. Open the hinged auxiliary control box access door and
secure.
2. Find the 2 plugs located in the partition above the control
box, remove and discard. See Fig. 2.
3. Remove cover from smoke detector. The screws will
remain captured in the cover.
4. Place foam gaskets over each sampling tube on smoke
detector. See Fig. 1.
5. Remove one knockout from top of smoke detector.
6. Insert stripped ends of wire harness through knockout and
wire to smoke detector as shown in Fig. 3. Use ground
screw in the smoke detector to secure a wire tie. Use wire
tie to provide strain relief for the wire harness.
7. Slide smoke detector into holes in partition. Do not secure
at this time.
PARTITION
SMOKE DETECTOR
MOUNTING PLUGS
PL13
AUXILIARY
CONTROL PANEL
Fig. 2 — Smoke Detector Mounting Location for
CONDUIT HOLES
DETECTOR
HOUSING
TERMINAL STRIP
POWER BOARD
2
The return air smoke detector is to be
48/50A020-060
COVER MOUNTING
SCREWS