Arcoaire MB16J2200B Manuale di istruzioni per l'installazione - Pagina 5

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INSTALLATION INSTRUCTIONS
LOW VOLTAGE CONTROL CONNECTIONS
The 24 volt power supply is provided by an internally wired 115/24V
low voltage transformer which is standard on all models.
Field supplied low voltage wiring can enter the unit on the top left hand
corner.
Install the strain relief bushing (supplied with unit) in the selected hole.
Connect low voltage field wiring to the Brown (24V Common) and Red
(24V Hot), and Gray (24V Fan) pigtails.
MB08
ESP
SPEED
VOLTS
0.20
0.30
Low
115v
1011
1015
Med
115v
1241
1225
High
115v
1387
1380
MB12
ESP
SPEED
VOLTS
0.20
0.30
Low
115v
1037
1050
Med
115v
1323
1340
High
115v
1671
1685
MB16
ESP
SPEED
VOLTS
0.20
0.30
Low
115v
1046
1055
Med
115v
1369
1380
High
115v
1718
1735
MB20
ESP
SPEED
VOLTS
0.20
0.30
Low
115v
1397
1380
Med
115v
1796
1790
High
115v
2336
2300
AIR FLOW CHECK
For proper system operation, the air flow through the indoor coil
should be between 350 and 450 cfm (165 and 212 L/s) per ton of
cooling capacity. The air flow through the unit can be determined by
measuring the external static pressure to the unit and selecting the
motor speed tap that will most closely provide the required air flow.
1. Set up to measure external static pressure at the supply and
return duct connections (Figure 6).
2. Drill holes in the ducts for pressure taps, pitot tubes, or other
accurate pressure sensing devices.
3. Connect these taps to a level inclined manometer or draft
gauge.
4. Ensure the coil and filter are clean, and all the registers are
open.
5. Determine the external static pressure with the blower
operating.
6. Refer to the Air Flow Data tables, to find the speed tap that will
most closely provide the required air flow for the system.
7. Refer to Motor Speeds and Airflow in these instructions if the
speed tap is to be changed.
8. Recheck the external static pressure with the new speed tap,
and confirm speed tap selection.
CARE AND MAINTENANCE
The system should be regularly inspected by a qualified service
technician. Consult the servicing dealer for recommended frequency.
Between visits, the only consumer service recommended or required
is air filter maintenance and condensate drain operation.
442 01 2405 01
in wc
0.40
0.50
0.60
0.70
1011
985
942
875
1202
1175
1135
1075
1372
1350
1311
1225
in wc
0.40
0.50
0.60
0.70
1058
1055
1041
1025
1352
1355
1345
1320
1696
1685
1651
1600
in wc
0.40
0.50
0.60
0.70
1055
1046
1034
1015
1384
1384
1368
1340
1750
1750
1736
1690
in wc
0.40
0.50
0.60
0.70
1366
1348
1321
1288
1777
1750
1705
1640
2255
2190
2106
1995
Specifications subject to change without notice.
Keep the low voltage wiring as short as possible inside the control box.
Complete connections between indoor blower, outdoor section,
indoor thermostat according to instruction provided with the
Condenser Installation Instructions and refer to Wiring Diagram.
MOTOR SPEEDS AND AIRFLOW
The motor speed can be set to one of three speeds. To change the
blower speed unplug the black wire connection at the blower motor
and move to desired speed tap.
MB08
ESP
0.80
SPEED VOLTS
796
Low
115v
991
Med
115v
1119
High
115v
MB12
ESP
SPEED VOLTS
0.80
Low
115v
996
Med
115v
1276
High
115v
1531
MB16
ESP
SPEED VOLTS
0.80
Low
115v
981
Med
115v
1300
High
115v
1634
MB20
ESP
SPEED VOLTS
0.80
Low
115v
1235
Med
115v
1554
High
115v
1873
Figure 6
Supply
Indoor
Section
AIR FILTER
Inspect air filters at least monthly and replace or clean as required.
Disposable type filters should be replaced. Reusable type filters may
be cleaned by soaking in mild detergent and rinsing with cold water.
The frequency of cleaning depends upon the hours of operation and
the local atmospheric conditions. Install filters with the arrows on the
side pointing in the direction of air flow. Clean filters keep unit
efficiency high.
LUBRICATION
The bearings of the blower motor are permanently lubricated.
CONDENSATE DRAINS
During the cooling season check the condensate drain lines to be sure
that condensate is flowing from the primary drain but not from the
secondary drain. If condensate ever flows from the secondary drain,
the unit should be promptly shut off and the condensate pan and
drains cleaned to insure a free flowing primary drain.
Modular Blower: MB
Pa
50
75
100
125
477
479
477
465
586
578
567
555
655
651
647
637
Pa
50
75
100
125
489
496
499
498
624
632
638
639
789
795
800
795
Pa
50
75
100
125
494
498
498
494
646
651
653
653
811
819
826
826
Pa
50
75
100
125
659
651
645
636
848
845
839
826
1102
1085
1064
1034
Static Pressure Check
Incline
Manometer
Return
149
174
199
445
413
376
536
507
468
619
578
528
149
174
199
491
484
470
635
623
602
779
755
723
149
174
199
488
479
463
646
632
613
819
798
771
149
174
199
623
608
583
805
774
733
994
941
884
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