18
connector allows the high-voltage power wires to pass through the
Fig. 28 — Thru-the-Base Fitting Assembly (Shown in
Shipping Position)
Fig. 29 — Thru-Base Connection Fittings (Units Built
Prior to 4/15/2019)
Fig. 30 — Thru-Base Connection Fittings (Units Built
On and After 4/15/2019)
1. Remove the “L” bracket assembly from the unit.
2. Remove connector plate assembly from the “L” bracket and
discard the “L” bracket, but retain the washer head screws
and the gasket (located between the “L” bracket and the con-
nector plate assembly).
NOTE: Take care not to damage the gasket, as it is reused in the
following step.
3. Place the gasket over the embossed area in the basepan, align-
ing the holes in the gasket to the holes in the basepan. See
Fig. 28.
4. Install the connector plate assembly to the basepan using 8 of
the washer head screws.
NOTE: If electrical connections are not going to occur at this time,
tape or otherwise cover the fittings so that moisture does not get
into the building or conduit in the interim.
Check tightness of connector lock nuts before connecting electri-
cal 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). Remove one of the two knockouts
located on the bottom left side of the unit control box. Use this
hole for the control conduit.
UNITS WITHOUT THRU-BASE CONNECTIONS (ELEC-
TRICAL CONNECTIONS)
1. Install power wiring conduit through side panel openings.
Install conduit between disconnect and control box.
2. Install power lines to terminal connections as shown in
Fig. 23 on page 16.
Voltage to compressor terminals during operation must be within
voltage range indicated on unit nameplate. On 3-phase units, volt-
ages between phases must be balanced within 2% and the current
within 10%. Use the formula shown in the example below to de-
termine 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.
Example: Supply voltage is 230-3-60
Determine maximum deviation from average voltage.
(AB) 227-224 = 3 v
(BC) 231-227 = 4 v
(AC) 227-226 = 1 v
Maximum deviation is 4 v.
Determine percent of voltage im
b
alance.
This amount of phase im
b
alance is satisfactory as it is
b
elow the maxi-
mum allowa
b
le 2%.
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
AUXILIARY
POWER SUPPLY
(OPTIONAL)
% Voltage
Im
b
alance
= 100 x
max voltage deviation from average voltage
average voltage
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage
=
(224 + 231 + 226)
=
6
8
1
=
227
3
3
% Voltage Im
b
alance = 100x
4
= 1.7
8
%
227
IMPORTANT: If the supply voltage phase im
b
alance is more than 2%,
contact your local electric utility company immediately.
A
B
C
MOTOR
Summary of Contents for WeatherMaster 50HCQ 04 Series
Page 4: ...4 Fig 2 50HCQ 04 06 Units Built On and After 4 15 2019 ...
Page 5: ...5 Fig 3 50HCQ 04 06 Units Built Prior to 4 15 2019 ...
Page 6: ...6 Fig 4 50HCQ 04 06 Corner Weights and Clearances ...
Page 7: ...7 Fig 5 50HCQ 04 06 Base Rail Details ...
Page 8: ...8 Fig 6 50HCQ 04 06 Thru the Base Charts ...
Page 23: ...23 Fig 41 Electro Mechanical Control Wiring 208 230v 460v ...
Page 24: ...24 Fig 42 Electro Mechanical Control Wiring 575v ...
Page 25: ...25 Fig 43 Electro Mechanical Power Wiring 208 230 1 60 ...
Page 26: ...26 Fig 44 Electro Mechanical Power Wiring 208 230 3 60 ...
Page 27: ...27 Fig 45 Electro Mechanical Power Wiring 460 3 60 ...
Page 28: ...28 Fig 46 Electro Mechanical Power Wiring 575 3 60 ...
Page 29: ...29 Fig 47 PremierLink Wiring Schematic 208 230 460v ...
Page 30: ...30 Fig 48 PremierLink Wiring Schematic 575v ...