Carrier Infinity ICS 58MVC 100 Series Installation Instructions Manual page 59

Table 12 - Gas Rate cu Ft/Hr
SECONDS SIZE OF TEST DIAL SECONDS
FOR 1 1 2 5 FOR 1
REVOLUTION REVOLUTION
cu _. cu _. cu _.
10 360 720 1800 50
11 327 655 1636 51
12 300 600 1500 52
13 277 555 1385 53
14 257 514 1286 54
15 240 480 1200 55
16 225 450 1125 56
17 212 424 1059 57
18 200 400 1000 58
19 189 379 947 59
20 180 360 900 60
21 171 343 857 62
22 164 327 818 64
23 157 313 783 66
24 150 300 750 68
25 144 288 720 70
26 138 277 692 72
27 133 267 667 74
28 129 257 643 76
29 124 248 621 78
30 120 240 600 80
31 116 232 581 82
32 113 225 563 84
33 109 218 545 86
34 106 212 529 88
35 103 206 514 90
36 100 200 500 92
37 97 195 486 94
38 95 189 474 96
39 92 185 462 98
40 90 180 450 100
41 88 176 439 102
42 86 172 429 104
43 84 167 419 106
44 82 164 409 108
45 80 160 400 110
46 78 157 391 112
47 76 153 383 116
48 75 150 375 120
49 73 147 367
SIZE OF TEST DIAL
1 2 5
cu _. cu _. cu _.
72 144 360
71 141 355
69 138 346
68 136 340
67 133 333
65 131 327
64 129 321
63 126 316
62 124 310
61 122 305
60 120 300
58 116 290
56 112 281
54 109 273
1
U
53 106 265
51 103 257
50 100 250
48 97 243
47 95 237
46 92 231
45 90 225
44 88 220
43 86 214
42 84 209
41 82 205
40 80 200
39 78 196
38 76 192
38 75 188
37 74 184
36 72 180
35 71 178
35 69 173
34 68 170
33 67 167
33 65 164
32 64 161
31 62 155
30 60 150
Set Temperature Rise
UNIT DAMAGE HAZARD
Failure to follow this caution may result in component
damage.
Temperature rise must be within limits specified on unit
rating plate. Operation is within a few degrees of midpoint
of rise range when setup switch SWI-4 is OFF.
Furnace must operate within ranges of temperature rise specified
on the furnace rating plate. Determine air temperature rise as
follows:
1. Place thermometers in return and supply ducts as near fur-
nace as possible. Be sure thermometers do not see heat ex-
changer so that radiant heat does not affect readings. This
practice is particularly important with straight-run ducts.
2. When thermometer readings stabilize, subtract return-air
temperature from supply-air temperature to determine air
temperature rise.
NOTE: Temperature rise can be determined for low-heat
operation by placing setup switch SWI-2 on furnace control in
ON position. Temperature rise can be determined for
medium-heat operation by placing setup switch SW4-2 on
furnace control in ON position. For high-heat operation, place
setup switch SWl-2 and SW4-2 in OFF position and jumper
R-W2 on furnace control. DO NOT forget to return setup switch
to OFF position and remove R-W2 jumper upon completion of
testing. (See Fig. 33 for switch and terminal location.)
3. This furnace is capable of automatically providing proper
airflow to maintain the temperature rise within the range
specified on furnace rating plate. If temperature rise is out-
side this range, proceed as follows:
a. Check gas input for low-, medium-, and high-heat oper-
ation.
b. Check derate for altitude if applicable.
c. Check all return and supply ducts for excessive restric-
tions causing static pressure greater than 0.5-in. wc.
d. Ensure Low Heat Rise Adjust switch SWI-3 on furnace
control is in ON position when a bypass humidifier is
used. (See Fig. 33 for switch location.)
e. Check Troubleshooting Guide for Variable-Speed Step
Modulating Condensing Furnaces.
Set Thermostat Heat Anticipator
When using a non-electronic thermostat, the thermostat heat
anticipator must be set to match the amp draw of components in
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