Carrier 50PG16 series, Руководство по установке

Страница: 9 / 16

9
OPTIONAL UNIONS
TO ALLOW FOR CONDENSATE
PAN REMOVAL
4" (102mm)
CONDENSATE
PAN ACCESS
PANEL
C06311
Fig. 8 -- External Trap for Condensate Drain
NOTE: Trap should be deep enough to offset maximum unit static difference
A 4-in. trap is recommended.
C06291
Fig. 9 -- Condensate Drain Piping Details
DISCONNECT
PER NEC
FACTOR
POWER
WIRING
FIELD
POWER
WIRING
11
12
13
21
22
23
EQUIP GND
C.A1
Legend
C.A1 — Compressor Contactor (A1)
EQUIP — Equipment
GND
— Ground
NEC — National Electrical Code
NOTE: The maximum wire size for C.A1 is 2/0.
C06237
Fig. 10 -- Field Power Wiring Connections
All units must have an external trap for condensate drainage. Install
a trap at least 4-in. deep and protect against freeze-up. If drain line
is installed downstream from the external trap, pitch the line away
from the unit at 1-in. per 10 ft of run. Do not use a pipe size smaller
than the unit connection (
3
/
4
-in.). (See Fig. 8 and 9.)
The 50PG units are provided with a removable condensate pan for
ease of cleaning. It is recommended that a union be placed between
the unit and condensate drainage to ease the removal of the pan
during servicing. Adequate clearance should be allowed if removal
of condensate pan is required. Allow 54 in. between condensate
pan access panel and any obstruction for complete removal.
Step 6 — Make Electrical Connections
Field Power Supply
(For more details, refer to the Controls. Start--up, Operation and
Troubleshooting manual).
All 208/230-v units are factory wired for 230-v power supply. If
the 208/230-v unit is to be connected to a 208-v power supply, the
transformers (TRAN1 and TRAN2) must be rewired by moving
the black wire with the
1
/
4
-in. female quick connect from the
230-volt connection and moving to the 200-volt
1
/
4
-in. male
terminal on the primary side of the transformer.
Refer to unit label diagram for additional information. Leads are
provided for field wire connections. Use UL approved
copper/aluminum connector.
When installing units, provide safety disconnect per NEC
(National Electrical Code) Article 440 or local codes. For
non-fused disconnects, size the disconnect according to the sizing
data provided in the electrical data tables. If a fused disconnect is
used, determine the minimum size for the switch based on the
disconnect sizing data provided in the electrical data tables and
then coordinate the disconnect housing size to accommodate the
Maximum Overcurrent Protection (MOCP) device size as marked
on the unit informative plate. (See Table 2 and 3.) All field wiring
must comply with NEC and local codes. Size wire based on MCA
(Minimum Circuit Amps) on the unit informative plate. See Fig. 10
for power wiring connection to the unit leads and equipment
ground.
Route power and ground lines through control box end panel or
unit basepan (see Fig. 3) to connections as shown on unit wiring
diagram and Fig. 10. Factory leads may be wired directly to the
disconnect.
50PG16