Input Rate - International comfort products R80ESL Installation, Start-Up, Operating And Service And Maintenance Instructions

R80ESN/R80ESL(Series A): Installation, Start–Up, Operating and Service and Maintenance Instructions
Table 12 – Orifice Size* And Manifold Pressure (In. W.C.) For Gas

Input Rate

WARNING
!
FURNACE OVERHEATING HAZARD
Failure to follow this caution may result in reduced furnace life.
Recheck temperature rise. It must be within limits specified on the
rating plate. Recommended operation is at the mid-point of rise range
or slightly above.
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
6. Set thermostat heat anticipator.
a. Mechanical thermostat - Set thermostat heat anticipator to match
the amp. draw of the electrical components in the R-W circuit.
Accurate amp. draw readings can be obtained at the wires
normally connected to thermostat subbase terminals, R and W.
The thermostat anticipator should NOT be in the circuit while
measuring current.
(1.) Remove thermostat from subbase or from wall.
(2.) Connect an amp. meter as shown in
W subbase terminals or R and W wires at wall.
(3.) Record amp. draw across terminals when furnace is in
heating and after blower starts.
(4.) Set heat anticipator on thermostat per thermostat
instructions and install on subbase or wall.
b. Electronic thermostat: Set cycle rate for 4 cycles per hr.
EXAMPLE:
Fig. 46 – Amp. Draw Check with Ammeter
Table 13 – Gas Rate (Cu Ft./Hr.)
SIZE OF TEST
SECONDS
FOR 1 1 Cu
REVOLUTION Ft.
10 360
A10181
11 327
12 300
13 277
14 257
15 240
16 225
17 212
18 200
19 189
20 180
21 171
22 164
A10181a
23 157
24 150
25 144
26 138
27 133
28 129
29 124
29
Fig. 46
THERMOSTAT SUBBASE
TERMINALS WITH
THERMOSTAT REMOVED
(ANITICIPATOR, CLOCK, ETC.,
MUST BE OUT OF CIRCUIT.)
HOOK-AROUND
AMMETER
R Y W G
10 TURNS
FROM UNIT 24-V
CONTROL TERMINALS
0.5 AMPS FOR THERMOSTAT
5.0 AMPS ON AMMETER
=
ANTICIPATOR SETTING
10 TURNS AROUND JAWS
DIAL
SECONDS
2 Cu 5 Cu FOR 1 1 Cu
Ft. Ft. REVOLUTION
720 1800 50
655 1636 51
600 1500 52
555 1385 53
514 1286 54
480 1200 55
450 1125 56
424 1059 57
400 1000 58
379 947 59
360 900 60
343 857 62
327 818 64
313 783 66
300 750 68
288 720 70
277 692 72
267 667 74
257 643 76
248 621 78
across the R and
A96316
SIZE OF TEST
DIAL
2 Cu 5 Cu
Ft. Ft. Ft.
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
53 106 265
51 103 257
50 100 250
48 97 243
47 95 237
46 92 231