Carrier 50ZPB - Maintenance

UNIT SIZE
024
030
036
042
048
060
SPEEDTAP
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
Table 5 - Wet Coil Air Delivery*
(Deduct 10 percent for 208 Volt Operation)
AIR DELIVERY 2 EXTERNAL STATIC PRESSURE (in. W.C.)
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
SCFM 965 818 777 731 670 617 563 489 451 391
SCFM 1003 921 890 850 809 756 700 659 597 539
SCFM 1103 1068 1034 996 962 930 892 821 791 742
SCFM 1052 1018 984 943 914 879 833 795 732 678
SCFM 1141 1107 1069 1036 1006 974 932 899 856 784
SCFM 1246 1213 1181 1144 1108 1078 1043 1015 973 931
SCFM 1281 1225 1178 1142 1098 1053 1008 935 878 840
SCFM 1359 1321 1278 1236 1201 1160 1109 1068 992 941
SCFM 1476 1441 1403 1366 1323 1289 1245 1201 1159 1117
SCFM 1453 1408 1373 1337 1295 1255 1215 1177 1134 1068
SCFM 1544 1507 1475 1436 1397 1359 1326 1290 1246 1201
SCFM 1614 1575 1542 1509 1467 1430 1395 1358 1323 1267
SCFM 1656 1632 1608 1580 1552 1525 1495 1463 1433 1384
SCFM 1708 1679 1650 1627 1601 1578 1546 1516 1478 1398
SCFM 1941 1913 1886 1858 1829 1799 1772 1736 1657 1543
SCFM 1837 1798 1753 1716 1677 1637 1590 1549 1497 1445
SCFM 1910 1872 1835 1795 1748 1711 1673 1623 1568 1525
SCFM 2098 2065 2032 1996 1956 1917 1877 1839 1798 1753
*Air delivery values are based on operating voltage of 230v, wet coil, without filter or electric heater. Deduct filter and electric heater pressure drops to obtain
static pressure available for ducting.
NOTES:
1. Do not operate the unit at a cooling airflow that is less than 350 cfm for each 12,000 Btuh of rated cooling capacity. Evaporator coil frosting may occur at air-
flows below this point.
2. Standard Cubic Feet per Minute.
CONTINUOUS FAN
With the continuous Indoor fan option selected on the thermostat,
G is continuously energized. The continuous fan speed will be the
same as the cooling fan speed.
ELECTRIC RESISTANCE HEATING
If accessory electric heaters are installed, the thermostat energizes
W, which energizes the heater relay and in turn energizes the
electric heaters. The thermostat terminal G must be energized
which starts the indoor-fan motor. If the heaters are staged, W2 is
energized when the second stage of heating is required. When the
need for heating is satisfied, the heater and IFM are de-energized.
MAINTENANCE
To ensure continuing high performance, and to minimize the
possibility of premature equipment failure, periodic maintenance
must be performed on this equipment. This cooling unit should be
inspected at least once each year by a qualified service person. To
troubleshoot unit, refer to Table 9, Troubleshooting Chart.
NOTE TO EQUIPMENT OWNER: Consult your local dealer
about the availability of a maintenance contract.
PERSONAL INJURY AND []NIT DAMAGE
HAZARD
Failure to follow this warning could result in personal
injury or death and possible unit component damage.
The ability to properly perform maintenance on this
equipment requires certain expertise, mechanical skills,
tools and equipment. If you do not possess these, do not
attempt to perform any maintenance on this equipment,
other than those procedures recommended in the Owner's
Manual.
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal
injury or death.
1. Turn off electrical power to the unit and install lockout
tag before performing any maintenance or service on this
unit.
2. Use extreme caution when removing panels and parts.
3. Never place anything combustible either on or in contact
with the unit.
[]NIT OPERATION HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Errors made when reconnecting wires may cause improper
and dangerous operation. Label all wires prior to
disconnecting when servicing.
The minimum maintenance requirements for this equipment are as
follows:
1. Inspect air filter(s) each month. Clean or replace when
necessary.
2. Inspect indoor coil, drain pan, and condensate drain each
cooling season for cleanliness. Clean when necessary.
3. Inspect blower motor and wheel for cleanliness each
cooling season. Clean when necessary.
4. Check electrical connections for tightness and controls for
proper operation each cooling season. Service when
necessary.
5. Ensure electric wires are not in contact with refrigerant
tubing or sharp metal edges.
Air Filter
IMPORTANT: Never operate the unit without a suitable airfilter
in the return-air duct system. Always replace the filter with the
same dimensional size and type as originally installed. See Table 1
for recommended filter sizes,
14