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