Nordyne RA 80+ series, Installation Instructions Manual

Page: 18 / 28

18
Low Voltage Wiring
Install the thermostat per the manufacturer’s
instructions. The low voltage (24 volt)
connections from the thermostat are made at
the terminal strip on the integrated control in the
furnace. See Figure 11 for the proper
connections for heating only (two-wire) and
heating/cooling (four-wire) applications. The
recommended minimum wire gauge for
thermostat wiring is shown in Table 9.
The thermostat must not be installed on an
outside wall or any other location where its
operation may be adversely affected. Adverse
affects include radiant loading from fireplaces,
sunlight, or lighting fixtures, and convective loading
from warm air registers or electrical appliances.
To determine the heat anticipator setting either:
1. Add the current draw of the system
components; or
2. Measure the current flow on the thermostat
R-W circuit after the circulating blower
motor has started.
Set the heat anticipator according to the
thermostat manufacturer’s instructions for heat
anticipator settings.
START-UP AND ADJUSTMENTS
General
Prior to start-up, verify that:
1. The line voltage power leads are securely
connected, that the polarity of the
connections is correct, and that the furnace
is properly grounded.
2. The thermostat wires (R, W, Y, and G) are
securely connected to the correct leads on
the terminal strip of the circuit board.
3. The gas line service pressure does not
exceed 10.0 in. water column (0.36 psig),
and is not less than 4.5 in. water column
(0.16 psig) for natural gas. For LP gas the
line service pressure must not exceed 14
in. water column (0.51 psig), and must not
be less than 11.0 in. w.c. (0.40 psig).
4. The roll-out manual reset switch is closed.
If necessary, press the red button to reset
a switch. DO NOT install a jumper wire
across a switch to defeat its function. If
a switch reopens on start-up, DO NOT
reset the switch without identifying and
correcting the fault condition which caused
the switch to trip.
TIME FOR TIME FOR
ONE REVOLUTION ONE REVOLUTION
(SECONDS) 1 5 10 (SECONDS) 1 5 10
10 360 1800 3600 66 55 273 545
12 300 1500 3000 68 53 265 529
14 257 1286 2571 70 51 257 514
16 225 1125 2250 72 50 250 500
18 200 1000 2000 74 49 243 486
20 180 900 1800 76 47 237 474
22 164 818 1636 78 46 231 462
24 150 750 1500 80 45 225 450
26 138 692 1385 82 44 220 439
28 129 643 1286 84 43 214 429
30 120 600 1200 86 42 209 419
32 113 563 1125 88 41 205 409
34 106 529 1059 90 40 200 400
36 100 500 1000 92 39 196 391
38 95 474 947 94 38 191 383
40 90 450 900 96 38 188 375
42 86 429 857 98 37 184 367
44 82 409 818 100 36 180 360
46 78 391 783 102 35 176 353
48 75 375 750 104 35 173 346
50 72 360 720 106 34 170 340
52 69 346 692 108 33 167 333
54 67 333 667 110 33 164 327
56 64 321 643 112 32 161 321
58 62 310 621 114 32 158 316
60 60 300 600 116 31 155 310
62 58 290 581 118 31 153 305
64 56 281 563 120 30 150 300
GAS FLOW RATE (CUBIC FEET PER HOUR)
CUBIC FEET PER REVOLUTION OF
METER
CUBIC FEET PER REVOLUTION OF
METER
Table 10. Gas Flow Rate