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35
Fig. 49 — HACR Caution Label
FACTORY-OPTION THRU-BASE CONNECTIONS
All units are equipped with the ability to bring utilities through the
base.
Gas is brought up through an embossed area located in the gas
section behind the gas entrance post. Access is gained through the
gas access panel. A knock out must be removed to accomplish
this.
The electrical entrance is located in the control box area and can
be accessed through the control box access panel. An embossed
area is provided with three knock outs. High voltage is brought
through the multi knock out by removing the appropriate size for
the size of the fitting required. A
7
/
8
-in. knock out is provided for
low voltage. An additional
7
/
8
-in. knock out is provided for a 115 v
line which is used when the unit is equipped with the non-unit
powered convenience outlet option.
All required fittings are field supplied. Install fittings when access
to both top and bottom of the base pan is available. See electrical
and gas connections for routing and connection information.
UNITS WITHOUT THRU-BASE CONNECTIONS
1. Install liquid tight conduit between disconnect and control
box.
2. Pull correctly rated high voltage wires through the conduit.
3. Install power lines to terminal connections as shown in
Fig. 44.
UNIT WITHOUT THRU-BASE CONNECTION KIT
Correctly rated low voltage wire can be routed through the rubber
grommet located on the corner post adjacent to the control box ac-
cess panel. Route wire through the grommet and then route the
wire behind the corner post utilizing the factory provided wire ties
secured to the control box. This will insure separation of the field
low voltage wire and the high voltage circuit. Route the low volt-
age wire to the Integrated Staging Control (ISC) board. See
Fig. 50.
NOTE: If utilizing the through the base connections, route the low
voltage wire through the wire ties to the Integrated Staging Con-
trol (ISC) board (see Fig. 51).
Fig. 50 — Field Control Wiring Raceway
HEAT ANTICIPATOR SETTINGS
Set heat anticipator settings at 0.14 amp for the first stage and
0.14 amp for second-stage heating.
TRANSFORMER CONNECTION FOR 208-V POWER
SUPPLY
All units except 208/230-v units are factory wired for the voltage
shown on the nameplate. If the 208/230-v unit is to be connected
to a 208-v power supply, the control transformer must be rewired
by moving the black wire with the
1
/
4
-in. female spade connector
from the 230-v connection and moving it to the 208-v
1
/
4
-in. male
terminal on the primary side of the transformer. Refer to unit label
diagram for additional information.
VAV-RTU Open Controller
For details on VAV-RTU Open option, refer to the
48/50LC*B 7-
26 VAV-RTU Open Controller Controls, Start-up, Operation and
Troubleshooting
manual.
RUBBER
GROMMET
CORNER
POST
WIRE
TIES
THRU THE BASE
CONNECTION
Summary of Contents for WeatherExpert 48LC B14 Series
Page 4: ...4 Fig 2 48LC B14 Vertical Airflow ...
Page 5: ...5 Fig 3 48LC B14 Horizontal Airflow ...
Page 6: ...6 Fig 4 48LC B14 Back View and Condensate Drain Location ...
Page 7: ...7 Fig 5 48LC B14 Corner Weights and Clearances ...
Page 8: ...8 Fig 6 48LC B14 Bottom View ...
Page 9: ...9 Fig 7 48LC B17 20 Vertical Airflow ...
Page 10: ...10 Fig 8 48LC B17 20 Horizontal Airflow ...
Page 11: ...11 Fig 9 48LC B17 20 Back View and Condensate Drain Location ...
Page 12: ...12 Fig 10 48LC B17 20 Corner Weights and Clearances ...
Page 13: ...13 Fig 11 48LC B17 20 Bottom View ...
Page 14: ...14 Fig 12 48LC B24 26 Vertical Airflow ...
Page 15: ...15 Fig 13 48LC B24 26 Horizontal Airflow ...
Page 16: ...16 Fig 14 48LC B24 26 Back View and Condensate Drain Location ...
Page 17: ...17 Fig 15 48LC B24 26 Corner Weights and Clearances ...
Page 18: ...18 Fig 16 48LC B24 26 Bottom View ...
Page 21: ...21 Fig 20 48LC B14 Roof Curb Details ...
Page 22: ...22 Fig 21 48LC B17 20 Roof Curb Details ...
Page 23: ...23 Fig 22 48LC B24 26 Roof Curb Details ...
Page 30: ...30 Fig 40 48LC B14 26 VAV RTU Open Control Wiring Diagram ...
Page 31: ...31 Fig 41 48LC B14 26 Power Wiring Diagram ...
Page 53: ......