18
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 connector 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,
aligning 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 elec-
trical 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, voltages between phases must be balanced within 2%
and the current within 10%. Use the formula shown in the ex-
ample below to determine the percent of voltage imbalance.
Operation on improper line voltage or excessive phase imbal-
ance constitutes abuse and may cause damage to electrical
components. Such operation would invalidate any applicable
Bryant 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 imbalance.
This amount of phase imbalance is satisfactory as it is below the maxi-
mum allowable 2%.
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
LOW VOLTAGE
CONDUIT
CONNECTOR
HIGH VOLTAGE
CONDUIT
CONNECTOR
AUXILIARY
POWER SUPPLY
(OPTIONAL)
% Voltage
Imbalance
= 100 x
max voltage deviation from average voltage
average voltage
AB = 224 v
BC = 231 v
AC = 226 v
Average Voltage
=
(224 + 231 + 226)
=
681
=
227
3
3
% Voltage Imbalance = 100x
4
= 1.78%
227
IMPORTANT: If the supply voltage phase imbalance is more than 2%,
contact your local electric utility company immediately.
A
B
C
MOTOR
Содержание Preferred 549J 04
Страница 4: ...4 Fig 2 549J 04 06 Units Built On and After 4 15 2019...
Страница 5: ...5 Fig 3 549J 04 06 Units Built Prior to 4 15 2019...
Страница 6: ...6 Fig 4 549J 04 06 Corner Weights and Clearances...
Страница 7: ...7 Fig 5 549J 04 06 Base Rail Details...
Страница 8: ...8 Fig 6 549J 04 06 Thru the Base Charts...
Страница 23: ...23 Fig 41 Electro Mechanical Control Wiring 208 230v 460v...
Страница 24: ...24 Fig 42 Electro Mechanical Control Wiring 575v...
Страница 25: ...25 Fig 43 Electro Mechanical Power Wiring 208 230 1 60...
Страница 26: ...26 Fig 44 Electro Mechanical Power Wiring 208 230 3 60...
Страница 27: ...27 Fig 45 Electro Mechanical Power Wiring 460 3 60...
Страница 28: ...28 Fig 46 Electro Mechanical Power Wiring 575 3 60...
Страница 29: ...29 Fig 47 RTU Open System Control Wiring...
