Carrier CRSMKSUP001A00, CRSMKDET001C00 Return Air Smoke Detector Installation

INSTALLATION

When installing the smoke detector in the unit, follow all local codes. Damage to unit may result.

Check Package Contents — Remove accessory pack- 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.

Tables 1A and B list the accessory package contents. Figure 1 shows the smoke detector.

Table 1A — Accessory Package Contents — Return Air Smoke Detector (CRSMKDET001C00)

		ITEM		QUANTITY
Smoke Detector with Cover				1
Sampling Tube (long)				1
Sampling Tube Filters				2
Test Magnet				1
Foam Gaskets				2
Screw, no. 6 Self Tapping				2
Tube End Plug (large)				1
Sampling Tube Support Bracket				1
Screw, 8-18 3/ -in. Pan Head				2
		4
Screw, 1/	4	AB-14	5/ -in.	2
			8
Small Snap Bushing				1
Large Snap Bushing				1
Harness Assembly (4-Wires, short)				1
Wire Tie, Screw Mounted				1

Table 1B — Accessory Package Contents — Supply Air Smoke Detector (CRSMKSUP001A00)

ITEM	QUANTITY
Smoke Detector with Cover	1
Sampling Tube (short)	1
Sampling Tube Filters	2
Test Magnet	1
Foam Gaskets	2
Tube End Plug (small)	1
Screw, 8-18 3/ -in. Pan Head	2
4
Small Snap Bushing	1
Harness Assembly (4-Wires, long)	1
Wire Tie, Screw Mounted	5
Wire Tie	1
Screw, no. 8 Self Tapping	1
Screw, no. 10	2

Return Air Smoke Detector Installation —

The return air smoke detector is to be installed in the predrilled holes located above compressor B1 in the electrical/ compressor section (Fig. 2).

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.

1.Open the hinged electrical/compressor access door and secure.

2.Find the 2 plugs located above compressor B1, remove and discard. Cut holes in the insulation located behind the partition.

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.

7.Provide strain relief for wires by attaching wire tie to ground screw located next to the knockout in the smoke detector. Tighten the wire tie.

8.Slide smoke detector into holes in partition with the terminal block to the right. Do not secure at this time.

9.Slide sampling tube into left-hand hole of smoke detector. It might be necessary to tilt the smoke detector upwards in order properly align the sampling tube.

10.Remove the unit side panel at the return end of the unit. Save screws for use later.

11.Mount the sampling tube support bracket to the cross

member with two 1/4AB-14 5/8-in. screws as shown in Fig. 4. Insert large snap bushing into hole in bracket.

12.Slide sampling tube into bracket, making sure that the sampling holes point down. Pull the sampling tube so that it is flush with the smoke detector.

13.Return to Electrical/Compressor section and secure sam- pling tube to smoke detector with two no. 6 self-tapping screws.

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

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

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

16.Replace the unit side panel.

17.Return to Electrical/Compressor section and insert sampling tube filters into both sampling tube holders. (See Fig. 1.)

18.Install the snap bushing in the center knockout under- neath the control terminal strips located in the bottom right-hand corner of the control box.

19.Feed wires through snap bushing and connect to appro- priate terminals as shown in Fig. 3.

20.Restore power to the unit.

21.Configure ComfortLink™ controller as specified in Configuring the ComfortLink Controller on page 5.

22.Perform Standby, Alarm, and Sensitivity Tests on page 7. At a minimum, the Magnet test should be performed to verify smoke detector wiring.

23.Replace smoke detector cover.

24.Check for alarms. Correct any problems.

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