Pre-start-up system checkout – Carrier AQUAZONE 50PTH User Manual
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Table 14A — WSHP Open — Fan Only / Low Fan and Med Fan Airflow
NOTE: Factory default setting shown bold.
IMPORTANT: The tap setting for high fan MUST equal or exceed the
tap setting for fan only/low/med fan
Table 14B — WSHP Open — High Fan Airflow
NOTE: Factory default setting shown bold.
IMPORTANT: The tap setting for high fan MUST equal or exceed the
tap setting for fan only/low/med fan
PRE-START-UP
System Checkout —
When the installation is complete,
follow the system checkout procedure outlined below before
starting up the system. Be sure:
1. Voltage is within the utilization range specifications of the
unit compressor and fan motor and voltage is balanced
for 3-phase units.
2. Fuses, breakers and wire are correct size.
3. Low voltage wiring is complete.
4. Piping and system flushing is complete.
5. Air is purged from closed loop system.
6. System is balanced as required. Monitor if necessary.
7. Isolation valves are open.
8. Water control valves or loop pumps are wired.
9. Condensate line is open and correctly pitched.
10. Transformer switched to lower voltage tap if necessary.
11. Blower rotates freely — shipping support is removed.
12. Blower speed is on correct setting.
13. Air filter is clean and in position.
14. Service/access panels are in place.
15. Return-air temperature is between 40 to 80 F heating and
50 to 110 F cooling.
50PT UNIT
SIZE
MAX
ESP
FAN MOTOR
HP
TAP SETTING
SW 3
(SW 1)
SW 4
(SW 2)
FAN ONLY
COOLING AND
HEATING LOW FAN
COOLING AND
HEATING MED FAN
26
0.5
0.5
4
OFF
OFF
475
920
1050
3
OFF
ON
425
825
950
2
ON
OFF
370
710
820
1
ON
ON
300
600
690
38
0.5
0.5
4
OFF
OFF
700
1120
1400
3
OFF
ON
630
1000
1250
2
ON
OFF
540
860
1080
1
ON
ON
450
730
900
49
0.75
1
4
OFF
OFF
870
1560
1850
3
OFF
ON
780
1400
1650
2
ON
OFF
670
1200
1430
1
ON
ON
560
1010
1200
64
0.75
1
4
OFF
OFF
1020
1860
2280
3
OFF
ON
920
1650
2040
2
ON
OFF
780
1430
1750
1
ON
ON
660
1200
1470
72
0.75
1
4
OFF
OFF
1050
1600
2230
3
OFF
ON
980
1600
2100
2
ON
OFF
910
1400
1850
1
ON
ON
850
1240
1620
50PT UNIT SIZE
MAX ESP
FAN MOTOR HP
TAP SETTING
SW 5
SW 6
COOLING AND HEATING HIGH FAN
26
0.5
0.5
4
OFF
OFF
1060
3
OFF
ON
950
2
ON
OFF
820
1
ON
ON
690
38
0.5
0.5
4
OFF
OFF
1400
3
OFF
ON
1350
2
ON
OFF
1350
1
ON
ON
1350
49
0.75
1
4
OFF
OFF
1850
3
OFF
ON
1660
2
ON
OFF
1430
1
ON
ON
1350
64
0.75
1
4
OFF
OFF
2280
3
OFF
ON
2050
2
ON
OFF
1750
1
ON
ON
1470
72
0.75
1
4
OFF
OFF
2230
3
OFF
ON
2100
2
ON
OFF
1870
1
ON
ON
1670