Carrier 48HC To install the return air sensor sampling tube, Smoke Detector Test Magnet

To install the return air sensor sampling tube:

1.Remove the tube from its shipping location.

2.Open the unit end to access the return air sensor (loc- ated on right-hand partition)

3.Orient the tube’s sampling holes into the return air flow direction. For vertical application, position the sampling holes on the bottom of the tube, facing into the bottom return duct opening. For horizontal applic- ation, position the sampling holes on the side of the tube, facing the unit’s end panel.

4.Insert the sampling tube into the return air sensor module until the tube snaps into position.

5.Replace end panel or outside air hood.

Smoke Detector Test Magnet —

Locate the magnet; it is shipped in the control box area.

Additional Application Data —

Refer to Catalog No. HKRNKA-1XA for discussions on additional control features of these smoke detectors including multiple unit coordination.

Table 11 – Unit Wire/Fuse or HACR Breaker Sizing Data

			COMBUSTION	POWER				NO C.O. or UNPWR C.O.
			FAN MOTOR	EXHAUST
UNIT
	NOM.	IFM				NO P.E.					w/ P.E. (pwrd fr/ unit)
	V---Ph---Hz	TYPE
			FLA	FLA	MCA	FUSE or	DISC. SIZE			MCA	FUSE or	DISC. SIZE
						HACR					HACR
						BRKR	FLA		LRA		BRKR	FLA	LRA
		STD			68.3	90.0	71		393	80.1	100.0	85	413
	208/230---3---60	MED	0.52	5.9	71.0	90.0	74		410	82.8	100.0	88	430
		HIGH			75.8	100.0	80		419	87.6	100.0	93	439
48HC*D17
		STD			34.9	45.0	36		234	41.1	50.0	44	246
	460---3---60	MED	0.3	3.1	36.3	45.0	38		243	42.5	50.0	45	255
		HIGH			38.9	50.0	41		247	45.1	50.0	48	259
		STD			26.2	30.0	27		184	31.0	40.0	33	192
	575---3---60	MED	0.24	2.4	26.2	30.0	27		184	31.0	40.0	33	192
		HIGH			29	35	31		198	33.8	40	36	206
		STD			75.7	100	79		440	87.5	100	93	460
	208/230---3---60	MED	0.52	5.9	80.5	100	85		449	92.3	100	98	469
		HIGH			85.9	100	91		459	97.7	125	104	479
48HC*D20
		STD			36.6	45	38		245	42.8	50	46	257
	460---3---60	MED	0.3	3.1	39.2	50	41		249	45.4	50	49	261
		HIGH			42	50	45		254	48.2	60	52	266
		STD			26.2	30	27		186	31	40	33	194
	575---3---60	MED	0.24	2.4	29	35	31		200	33.8	40	36	208
		HIGH			32.4	40	35		198	37.2	45	40	206
		STD			88.7	100.0	93		544	100.5	125.0	107	564
	208/230---3---60	MED	0.52	5.9	94.1	110	100		554	105.9	125	113	574
		HIGH			107.6	125	114		628	119.4	150	128	648
48HC*D24
		STD			48.6	60.0	51		277	54.8	60.0	58	289
	460---3---60	MED	0.3	3.1	51.4	60	54		282	57.6	70	61	294
		HIGH			57.4	70	61		319	63.6	80	68	331
		STD			35.5	45.0	37		204	40.3	50.0	43	212
	575---3---60	MED	0.24	2.4	38.9	50	41		202	43.7	50	47	210
		HIGH			39.4	50	42		229	44.2	50	47	237
		STD			117.4	150.0	121		584	129.2	175.0	135	604
	208/230---3---60	MED	0.52	5.9	122.8	150	127		594	134.6	175	141	614
		HIGH			135.5	175	142		668	147.3	175	156	688
48HC*D28
		STD			54.0	60.0	57		303	60.2	70.0	64	315
	460---3---60	MED	0.3	3.1	56.8	70	60		308	63	80	67	320
		HIGH			62.8	80	67		345	69	80	74	357
		STD			40.4	50.0	42		228	45.2	50.0	48	236
	575---3---60	MED	0.24	2.4	43.8	50	46		226	48.6	60	52	234
		HIGH			44.3	50	47		253	49.1	60	52	261

NOTE: See page 49 for table legend and notes.

48HC

47