Refrigerant Charging; Routine Maintenance; Air Filter; Vent Cover Assembly - Nordyne R4GD Series Installation Instructions Manual

Refrigerant Charging — The packaged gas/electric units
are fully charged at the factory. The system refrigerant
charge can be checked and adjusted through the service
ports provided behind the service panel. Use only gauge
lines which have a "Schrader" depression device present to
actuate the valve. Refrigerant charging must be done by
qualified personnel familiar with safe and environmentally
responsible refrigerant handling procedures.
! WARNING:
The gas/electric units are shipped fully charged
and ready for installation. When a system is
installed according to these instructions, no
refrigerant charging is required. If repairs make
it necessary for evacuation and charging, it
should only be done by qualified, trained
personnel thoroughly familiar with this
equipment. Some local codes require licensed
installation/service personnel to service this type
of equipment. Under no circumstances should
the owner attempt to install and/or service this
equipment. Failure to comply with this warning
could result in property damage, personal injury,
or death.
TIME FOR
ONE REVOLUTION
(SECONDS)
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
22
GAS FLOW RATE (CUBIC FEET PER HOUR)
CUBIC FEET PER REVOLUTION OF METER
1 5
360 1800
300 1500
257 1286
225 1125
200 1000
180 900
164 818
150 750
138 692
129 643
120 600
113 563
106 529
100 500
95 474
90 450
86 429
82 409
78 391
75 375
72 360
69 346
67 333
64 321
62 310
60 300
58 290
56 281
Table 8. Gas Flow Rate (Cubic Feet Per Hour).
Routine Maintenance — Proper maintenance is important
to achieve optimum performance from the air conditioner.
The ability to properly perform maintenance on this equipment
requires certain mechanical skills and tools.
If you do not possess these skills, contact your dealer for
maintenance. Consult your local dealer about the availability
of maintenance contracts. At a minimum, routine
maintenance should include the following:
Air Filter — Inspect and clean or replace the air filter
every three to four weeks.
Never operate the unit without a filter in place.
Dust and lint in the return air can build up on
internal components, resulting in loss of
efficiency, equipment damage, and possible fire
risk.
Vent Cover Assembly — Inspect and clean the screen of
the vent cover assembly at the beginning of each heating
and cooling seasons.
Condensate Drain and Outdoor Coil — Inspect the
condensate drain and outdoor coil at the beginning of each
cooling season. Remove any debris. Clean the outdoor coil
TIME FOR
ONE REVOLUTION
10 (SECONDS)
3600 66
3000 68
2571 70
2250 72
2000 74
1800 76
1636 78
1500 80
1385 82
1286 84
1200 86
1125 88
1059 90
1000 92
947 94
900 96
857 98
818 100
783 102
750 104
720 106
692 108
667 110
643 112
621 114
600 116
581 118
563 120
! WARNING:
CUBIC FEET PER REVOLUTION OF METER
1 5
55 273
53 265
51 257
50 250
49 243
47 237
46 231
45 225
44 220
43 214
42 209
41 205
40 200
39 196
38 191
38 188
37 184
36 180
35 176
35 173
34 170
33 167
33 164
32 161
32 158
31 155
31 153
30 150
10
545
529
514
500
486
474
462
450
439
429
419
409
400
391
383
375
367
360
353
346
340
333
327
321
316
310
305
300