355CAV
Table 12 – Gas Rate cu Ft/Hr
SECONDS | SIZE OF TEST DIAL | SECONDS |
| SIZE OF TEST DIAL |
| ||
FOR 1 | 1 | 2 | 5 | FOR 1 | 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 |
|
|
|
|
Set Temperature Rise
!CAUTION
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
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 furnace as possible. Be sure thermometers do not see heat exchanger so that radiant heat does not affect readings. This practice is particularly important with
2.When thermometer readings stabilize, subtract
NOTE: Temperature rise can be determined for
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 outside this range, proceed as follows:
a.Check gas input for
b.Check derate for altitude if applicable.
c.Check all return and supply ducts for excessive restrictions causing static pressure greater than
d.Ensure Low Heat Rise Adjust switch
e.Check Troubleshooting Guide for
Set Thermostat Heat Anticipator
When using a
The thermostat and anticipator should NOT be in the circuit while measuring current. If thermostat has no subbase, the thermostat must be disconnected from R and W/W1 wires during current measurement.
Fig. 63 illustrates an easy method of obtaining thermostat amp draw measurements. The amp reading should be taken after blower motor has started and furnace is operating in
1.To operate furnace in
2.See thermostat manufacturer’s instructions for adjusting the heat anticipator and for varying heating cycle length.
58