Carrier 48/50A020-060 installation instructions Smoke Detector Wiring Connections

GROUND

SCREW

SMOKE

DETECTOR

SAMPLING

TUBE

FILTERS

WIRE HARNESS

PL13

Fig. 3 — Smoke Detector Wiring Connections

8.Insert tube end plug into sampling tube and slide sam- pling tube into bottom hole of smoke detector.

9.Remove the unit side panel at the return end of the unit (downshot units only). Save screws for use later.

10.Mount the sampling tube support bracket to the cross member with two 1/4 AB-14 5/8-in. screws as shown in Fig. 4. Insert snap bushing into hole in bracket.

11.Slide sampling tube into bracket, making sure that the sampling holes point in the opposite direction of the re- turn air flow. Insert the sampling tube all the way into the smoke detector.

12.Return to the auxiliary control box and secure sampling tube to smoke detector with two no. 6 self-tapping screws.

13.Attach smoke detector to partition using two, 8-18 3/4-in. pan head screws. See Fig. 4.

Do not overtighten the screws. Damage to smoke detector may result.

14.Return to side panel and insert tube end plug into sampling tube.

15.Replace the unit side panel.

16.Return to auxiliary control box section and insert sam- pling tube filters into both sampling tube holders. (See Fig. 1.)

17.Connect harness PL13 as shown in Fig. 3.

18.Restore power to the unit.

19.Configure ComfortLink™ controller as specified in Controls and Troubleshooting Guide.

20.Perform Standby, Alarm, and Sensitivity Tests on page 6. At a minimum, the Magnet test should be performed to verify smoke detector wiring.

SMOKE

DETECTOR

WIRE

HARNESS

SAMPLING

TUBE

SUPPORT

BRACKET

SAMPLING

TUBE

Fig. 4 — Smoke Detector Installed (48/50A020-060)

21.Replace smoke detector cover.

22.Check for alarms. Correct any problems.

23.Close and secure auxiliary control box door.

48/50Z Units — The return air smoke detector is to be installed on the upright in the power exhaust section. See Fig. 5-10.

NOTE: For size 075-105 units with return fan option, the smoke detector should be installed in the return duct. Do not use the bracket provided in this accessory kit.

1.Open the power exhaust section doors/panels on both sides of the unit to gain access.

2.Find plug 13 in the power exhaust section.

3.Remove cover from smoke detector. The screws will re- main 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.Mount the smoke detector bracket 50ZZ500420 on the upright.

See Fig. 5 for size 030-050 units without economizer.

See Fig. 6 for size 030-050 units with economizer only option.

See Fig. 7 for size 030-050 units with economizer and power exhaust option.

See Fig. 8 for size 055-105 units without economizer.

See Fig. 9 for size 055-105 units with economizer only option.

See Fig. 10 for size 055-105 units with economizer and power exhaust option.

8.Slide smoke detector into holes in bracket. Do not secure at this time.

9.Insert tube end plug into sampling tube and slide sampling tube into bottom hole of smoke detector.

10.Mount the sampling tube bracket to the bottom of the power exhaust section using two 1/4 AB-14-5/8-in. screws. For size 030-050 units with power exhaust, use bracket 50ZZ500431 as shown on Fig. 7. For all other units use bracket 50ZZ500421, as shown on Fig. 5 and 6 for size 030-050 units, Fig. 8-10 for size 055-105 units.

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