Carrier 58PAV Bedienungsanleitung Seite 15

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Table 16—Gas Rate Cu Ft/Hr
Seconds
SIZE OF TEST DIAL
Seconds SIZE OF TEST DIAL
for one
1 2 5
for one 1
2
5
Revolution cu ft CU ft CU ft Revolution
cu ft
cu ft
cu ft
10
360 720
1800
50 72 144
360
11
327
655 1636 51 71 141
355
12 300 600 1500 52
69 138
346
13 277 555 1385 53
68 136
340
14 257 514 1286 54
67 133
333
15 240 480 1200 55
65 131 327
16 225 450 1125 56
64 129
321
17
212 424 1059 57
63 126
316
18 200 400 1000 58 62 124
310
19
189 379
947
59
61
122
305
20 180
360
900
60 60 120
300
21 171
343
857 62
58 116
290
22 164
327 818
64
56
112
281
23 157 313 783 66 54 109
273
24 150
300
750 68
53 106
265
25
144
288
720 70
51 103 257
26 138 277
692 72
50
100
250
27 133 267
667 74
48
97
243
28 129 257 643 76 47 95
237
29 124
248
621 78
46
92
231
30 120 240 600 80
45
90
225
31
116 232 581
82
44 88
220
32
113
225
563 84
43 86 214
33 109
218
545 86
42
84
209
34
106
212
529
88 41 82
205
35 103
206
514
90
40 80 200
36
100
200 500 92
39
78
196
37
97
195 486 94
38 76 192
38 95
189
474 96
38 75
188
39
92
185
462
98 37 74
184
40 90 180 450 100
36
72
180
41
88 176
439
102 35 71
178
42 86 172
429
104
35
69
173
43 84 167 419 106 34 68
170
44 82 164 409 108
33
67
167
45 80 160 400 110
33
65
164
46 78 157 391
112 32
64
161
47 76
153
383 116
31
62
155
48 75
150
375 120
30 60
150
49 73 147 367
d. Approved input ratings.
The U.S.A. ratings are approved for altitudes up to
2000 ft for natural and propane gases. Refer to
National Fuel Gas Code Appendix F, Table F-4 for
proper orifice sizing at high altitudes,
e. Canadian installations only.
The Canadian ratings are approved for altitudes up
to 2000 ft for natural and propane gases. High alti
tude ratings are from 2000 ft to 4500 ft above sea
level. See Table 17 for nominal burner orifice size.
High altitude rating includes a 10% derate as
required by Canadian standards.
Table 17—Canadian Orifice Size
Sea Level
High Altitude
Gas
0—2000 ft 20Ô0—4500 ft
Natural 43
44
Propane
54
55
2. Set temperature rise.
Do not exceed the temperature rise range specified on
the unit rating plate. Determine the air temperature
rise as follows:
a. Place duct thermometers in return and supply ducts
as near furnace as possible. Be sure thermometers
do not “see” heat exchangers so that radiant heat
will not affect thermometer readings. This is partic
ularly important with straight-run ducts.
b. When thermometer readings stabilize, subtract
return-air temperature from supply-air temperature
to determine temperature rise.
c. Adjust air temperature rise by adjusting blower
speed. Increase blower speed to reduce temperature
rise. Decrease blower speed to increase temperature
rise.
A WARNING
Disconnect the electrical power before changing the
speed tap. A failure to follow this warning can cause
personal injury.
d. To change motor speed taps, remove the motor tap
lead (see Table 18) and relocate it on the desired ter
minal on the plug-in terminal block/speed selector
located on the blower housing.
A CAUTION
Recheck the temperature rise. It must be within the
Hmits specified on the unit rating plate. Recommended
operation at mid-point of rise or above.
Table 18—Speed Selector
Speed Tap No.*
Common C
Hi
1
Med-Hi 2
Med-Low 3
Low 4
*White wire from control box to common; black wire from control box to
cooling speed selection; red wire from control box to heating and con
stant fan speed selection.
3. Set thermostat heat anticipator.
The thermostat heat anticipation must be set to match
the amp draw of the electrical components in the R-W
circuit. Accurate amp draw readings can be obtained at
thermostat subbase terminals R & W. Fig. 16 illus
trates an easy method of obtaining the actual amp
draw. The amp reading should be taken after the
blower motor has started. See the thermostat manufac
turer’s instructions for adjusting the heat anticipator
and for varying the heating cycle length.
NOTE: When using an electronic thermostat, set the cycle
rate for three cycles per hour.
E. Check Safety Controls
The flame sensor, gas valve, and pressure switch were all
checked in the Startup Section as part of normal operation.
Fig. 16—Amp Draw Check With Ammeter
15
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