16
C10305
UNIT
VOLTAGE
CONNECT
AS
PRIMARY
CONNECTIONS
TRANSFORMER
TERMINALS
208,
230
240
L1: RED +YEL
L2: BLU + GRA
H1 + H3
H2 + H4
460
480
L1: RED
Splice BLU + YEL
L2: GRA
H1
H2 + H3
H4
575
600
L1: RED
L2: GRA
H1
H2
Fig. 23 -- Powered Convenience Outlet Wiring
Fuse on power type: The factory fuse is a Bussman
“Fusetron” T--15, non--renewable screw--in (Edison base)
type plug fuse.
C09247
Fig. 24 -- Convenience Outlet Utilization Notice Label
Duty Cycle: the unit--powered convenience outlet has a
duty cycle limitation. The transformer is intended to
provide power on an intermittent basis for service tools,
lamps, etc; it is not intended to provide 15--amps loading
for continuous duty loads (such as electric heaters for
overnight use). Observe a 50% limit on circuit loading
above 8--amps.
Convenience outlet usage rating:
Continuous usage: 8 amps maximum
Test the GFCI receptacle by pressing the TEST button on
the face of the receptacle to trip and open the receptacle.
Check for proper grounding wires and power line phasing
if the GFCI receptacle does not trip as required. Press the
RESET button to clear the tripped condition.
Factory--Option Thru--Base Connections —
Do not install Power and Gas tubing through the base pan
of the unit unless the “Thru--Base Connection” kit is used.
Failure to use this kit will result in water leaks through the
base pan of the unit, possibly running into the building.
This service connection kit consists of a
1
/
2
--in electrical
bulkhead connector and a
3
/
4
--in electrical bulkhead
connector, all factory--installed in the embossed (raised)
section of the unit basepan in the condenser section. The
3
/
4
--in bulkhead connector enables the low--voltage control
wires to pass through the basepan. The
1
/
2
--in electrical
bulkhead connector allows the high--voltage power wires
to pass through the basepan. See Fig. 25.
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
C08637
Fig. 25 -- Thru--Base Connection Fittings
Check tightness of connector lock nuts before connecting
electrical conduits.
Field--supplied and field--installed liquid tight conduit
connectors and conduit may be attached to the connectors
on the basepan. Pull correctly rated high voltage and low
voltage through appropriate conduits. Connect the power
conduit to the internal disconnect (if unit is so equipped)
or to the external disconnect (through unit side panel). A
hole must be field cut in the main control box bottom on
the left side so the 24--v control connections can be made.
Connect the control power conduit to the unit control box
at this hole.
Units without Thru--Base Connections —
1. Install power wiring conduit through side panel open-
ings. Install conduit between disconnect and control
box.
2. Install power lines to terminal connections as shown
in Fig. 19.
Voltage to compressor terminals during operation must be
within voltage range indicated on unit nameplate. See
Table 3. On 3--phase units, voltages between phases must
be balanced within 2% and the current within 10%. Use
the formula shown in the legend for Table 3, Note 2 to
determine the percent of voltage imbalance. Operation on
improper line voltage or excessive phase imbalance
constitutes abuse and may cause damage to electrical
components. Such operation would invalidate any
applicable Carrier warranty.
Field Control Wiring —
The 50HT unit requires an external temperature control
device. This device can be a thermostat (field--supplied)
or a PremierLink controller (available as factory--installed
option or as field--installed accessory, for use on a Carrier
50H
T
Содержание 50HT-A07
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Страница 4: ...4 C10315 Fig 1 Unit Dimensional Drawing cont 50HT ...
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