Carrier 59SU5A Manual page 47

59SU5A: Installation, Start-up, Operating and Service Maintenance Instructions
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
R Y W G
10 TURNS
FROM UNIT 24-V
CONTROL TERMINALS
EXAMPLE: 5.0 AMPS ON AMMETER
10 TURNS AROUND JAWS
Fig. 62 – Amp. Draw Check With Ammeter
b. Electronic thermostat: Set cycle rate for 4 cycles per hr.
9. Adjust Cooling Airflow. The cooling airflow can be set from the
remaining blower speed taps. Refer to the Air Delivery Tables in
these instructions.
10. Adjust blower off delay. The blower off delay has four (4)
adjustable settings from 90 seconds to 180 seconds. The blower off
delay jumpers are located on the furnace control board - see wiring
diagram (see Fig. 68). Position A-90 seconds, B-120 seconds,
C-150 seconds, D-180 seconds.
To change the blower off delay setting, move the jumper from one
set of pins on the control to the pins used for the selected blower off
delay. Factory off delay setting is 120 seconds.
11. Cooling On Delay is fixed at 2 seconds for either jumper selection.
Check Safety Controls
1. Check Main Limit Switch(es)
This control shuts off combustion control system and energizes
air-circulating blower motor, if furnace overheats. By using this
method to check limit control, it can be established that limit is
functioning properly and will operate if there is a restricted duct
system or motor failure. If limit control does not function during
this test, cause must be determined and corrected.
a. Run furnace for at least 5 minutes.
b. Gradually block off return air with a piece of cardboard or sheet
metal until the limit trips.
c. Unblock return air to permit normal circulation for 5 minutes.
d. Main limit circuit open causes 3 hour lock out.
e. Reset unit power to clear limit fault lockout.
Checklist
1. Put away tools and instruments. Clean up debris.
2. Verify that the Blower/Heat Off Delay jumpers are set as desired.
(see Fig. 41 and Fig. 68).
3. Verify that there are no unsealed openings in the blower shelf or
casing.
4. Verify that the blower (lower door in upflow position) and control
("Main" or upper door in upflow position) doors are properly
installed.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
HOOK-AROUND
AMMETER
= 0.5 AMPS FOR THERMOSTAT
ANTICIPATOR SETTING
A96316
5. Verify that the Status LED glows. If not, check that the power
supply is energized and that the blower door is secure. Interpret
diagnostic codes (see Fig.
6. Cycle test furnace with room thermostat to be sure that it operates
properly with the room thermostat. Check all modes including
Heat, Cool and Fan.
7. Check operation of accessories per manufacturer's instructions.
8. Review Owner's Manual with owner.
9. Attach entire literature packet to furnace.
Table 21 – Gas Rate (CU ft./hr)
SIZE OF TEST DIAL
SEC
FOR 1
1 Cu 2 Cu
REV
Ft. Ft.
10 360 720
11 327 655
12 300 600
13 277 555
14 257 514
15 240 480
16 225 450
17 212 424
18 200 400
19 189 379
20 180 360
21 171 343
22 164 327
23 157 313
24 150 300
25 144 288
26 138 277
27 133 267
28 129 257
29 124 248
30 120 240
31 116 232
32 113 225
33 109 218
34 106 212
35 103 206
36 100 200
37 97 195
38 95 189
39 92 185
40 90 180
41 88 176
42 86 172
43 84 167
44 82 164
45 80 160
46 78 157
47 76 153
48 75 150
49 73 147
50 72 144
51 71 141
52 69 138
53 68 136
54 67 133
47
63).
SIZE OF TEST DIAL
SEC
FOR 1
5 Cu 1 Cu 2 Cu
REV
Ft. Ft. Ft.
1800 55 65 131
1636 56 64 129
1500 57 63 126
1385 58 62 124
1286 59 61 122
1200 60 60 120
1125 62 58 116
1059 64 56 112
1000 66 54 109
947 68 53 106
900 70 51 103
857 72 50 100
818 74 48 97
783 76 47 95
750 78 46 92
720 80 45 90
692 82 44 88
667 84 43 86
643 86 42 84
621 88 41 82
600 90 40 80
581 92 39 78
563 94 38 76
545 96 38 75
529 98 37 74
514 100 36 72
500 102 35 71
486 104 35 69
474 106 34 68
462 108 33 67
450 110 33 65
439 112 32 64
429 116 31 62
419 120 30 60
409 124 29 58
400 129 28 56
391 133 27 54
383 138 26 52
375 144 25 50
367 150 24 48
360 157 23 46
355 164 22 44
346 171 21 42
340 180 20 40
333
5 Cu
Ft.
327
321
316
310
305
300
290
281
273
265
257
250
243
237
231
225
220
214
209
205
200
196
192
188
184
180
178
173
170
167
164
161
155
150
145
140
135
130
125
120
115
110
105
100