Table 11 Heating Pressure; Table 12 Dehum. Relay Logic Board - Bard Q-TEC Q24H3DA Installation Instructions Manual

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MODEL AIR PRESSURE
TEMP.
Low Side
Q24H3D 70
High Side
Low Side
Q30H3D 70
High Side
Low Side
Q36H3D 70
High Side
Low Side
Q43H3D 70
High Side
Low Side
Q48H3D 70
High Side
Low Side
Q60H3D 70
High Side
Cooling Mode Unoccupied
Cooling Mode Occupied
1st Stage Heating Occupied
1st Stage Heating Unoccupied
2nd Stage Heating Occupied
2nd Stage Heating Unoccupied
Emergency Heat
Dehumidification Occupied
Dehumidification Unoccupied
Dehumidification w/RAT Closed
Fan Only Occupied
Fan Only Unoccupied
NOTES:
1. Cooling takes precedence over dehumidification. A cooling call will cancel dehumidification.
2. Dehumidification takes precedence over first stage heating.
3. A second stage heating call cancels dehumidification.
4. The relay logic board has a jumper on it to choose between full-time dehumidification and occupied dehumidification only. With
the jumper in the 1-2 position dehumidification is available full-time. With the jumper in the 2-3 position dehumidification is
available only when the room is occupied. The room is considered occupied when the A1 terminal is energized.
5. These outputs will be energized if the jumper is in the full time dehumidification position. They will be off if the jumper is in the
occupied dehumidification only position.
Manual 2100-653
Page 44 of 44
TABLE 11
Heating Pressure
(All Temperatures in Degrees F)
AIR TEMPERATURE ENTERING OUTDOOR COIL
0 5 10 15
35 42 49 56
273 284 295 307
39 43 48 53
286 290 295 301
16 26 36 46
168 194 217 238
24 34 44 54
300 295 293 294
19 29 38 47
250 264 277 290
24 32 40 48
247 258 269 279
TABLE 12
Dehumidification Relay Logic Board
Inputs to Board
NOTES G Y B W2
1 X X
1 X X
2 X X X
2 X X X
3 X X X X
3 X X X X
X
4
4
X
X
20 25 30 35
62 69 76 83
318 329 340 351
59 65 72 80
308 317 326 336
56 65 73 82
257 274 288 301
63 71 78 85
296 301 308 317
55 63 71 79
302 313 324 335
56 63 70 76
289 298 307 315
E1 A1 D RAT G1 BK
X X
X
X X
X
X X
X
X X
X X X
X 5
X X X
X X
X
40 45 50 55
89 96 103 110 116
362 374 385 396 407
88 96 106 115 126
347 360 373 388 403
89 97 104 111 117
311 318 324 328 329
91 97 102 106 110
328 342 358 376 396
86 93 99 105 111
345 355 364 373 381
83 89 95 100 105
232 330 337 344 350
Outputs From Board
YO RV W E1 A2 TWV
X X X
X X
X X X X
X X X
X X X X X
X X X X
X X X
X X
5 5
X X X
X
60
X
5
X