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Fig. 41 —
Typical Rnet Communication Sensor
Wiring
THERMOSTAT
Install a Carrier-approved accessory thermostat according to
installation instructions included with the accessory. For com
-
plete economizer function, select a two-stage cooling thermo
-
stat. Locate the thermostat accessory on a solid wall in the con
-
ditioned space to sense average temperature in accordance with
the thermostat installation instructions. Typical low-voltage
connections are shown in Fig. 42.
If the thermostat contains a logic circuit requiring 24-v power,
use a thermostat cable or equivalent single leads of different
colors with minimum of seven leads. If the thermostat does not
require a 24-v source (no “C” connection required), use a ther
-
mostat cable or equivalent with minimum of six leads. Check
the thermostat installation instructions for additional features
which might require additional conductors in the cable.
For wire runs up to 50 ft (15 m), use no. 18 AWG (American
Wire Gage) insulated wire [95°F (35°C) minimum]. For 50 to
75 ft (15 to 23 m), use no. 16 AWG insulated wire [95°F
(35°C) minimum]. For over 75 ft (23 m), use no. 14 AWG in
-
sulated wire [95°F (35°C) minimum]. Wire sizes larger than
no. 18 AWG cannot be directly connected to the thermostat and
will require a junction box and splice at the thermostat.
Fig. 42 —
Low-Voltage Thermostat Connections
Thermostat Wiring, Units Without Thru-Base Connection Kit
Pass the thermostat control wires through the hole provided in
the corner post; then feed the wires through the raceway built
into the corner post to the control box. Pull the wires over to
the terminal strip on the lower-left corner of the SystemVu
MMB. See Fig. 43.
NOTE: If thru-the-bottom connections accessory is used, refer to
the accessory installation instructions for information on routing
power and control wiring.
Fig. 43 —
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, when available.
+12V
Rnet‒
Rnet+
Gnd
Note 1: Typical multi-function marking. Follow manufacturer’s configuration
Instructions to select Y2.
Note 2: Y2 to Y2 connection required on single-stage cooling units when
integrated economizer function is desired.
Field Wiring
W2
W2
W1
C
W1
C
Y1
Y1
Y
3
G
G
S
ystemVu
Main Base Board
TB1
Typical
Thermostat
Connections
R
R
O/B/Y2
Y2
(Note 1)
(Note 2)
RACEWAY
HOLE IN END PANEL (HIDDEN)
Summary of Contents for WeatherExpert 48JC04
Page 4: ...4 Fig 2 Unit Dimensional Drawing ...
Page 5: ...5 Fig 2 Unit Dimensional Drawing cont ...
Page 6: ...6 Fig 2 Unit Dimensional Drawing cont ...
Page 24: ...24 Fig 46 48JC 04 06 Control Wiring Diagram ...
Page 25: ...25 Fig 47 48JC 04 06 Power Wiring Diagram 208 230 460V Unit Shown ...
Page 26: ...26 Fig 48 48JC 04 06 Power Wiring Diagram 575V Unit Shown ...
Page 32: ......
Page 33: ......