42
ELECTRIC HEATERS
The 50LC units may be equipped with factory or field-installed
electric heaters. The heaters are modular in design.
Heater modules are installed in the compartment below the indoor
blower access panel. Access is through the electric heat access
panel. Heater modules slide into the compartment on tracks along
the bottom of the heater opening. See Fig. 59-61. Refer to the
Electric Heater Kit Installation Instructions for complete details on
field-installed electric heat accessory.
Fig. 59 —
Typical Access Panel Location
Fig. 60 —
Typical Component Location
Fig. 61 —
Electric Heater Compartment
(Cover Removed)
Not all available heater modules may be used in every unit. Use
only those heater modules that are ETL listed for use in a specific
size unit. Refer to the label on the unit cabinet for the list of ap
-
proved heaters.
Low-Voltage Control Connections
Locate the plug assembly in the electric heater section of the main
unit. Connect the plug with the mating low voltage plug located on
the heater. Note that the plug will already be connected when there
is factory-installed electric heat See Fig. 62.
Fig. 62 —
Optional or Accessory Electric Heater
Control Connections
HUMIDI-MIZER
®
SYSTEM CONTROL CONNECTIONS
NOTE: It is suggested to ensure the Auto-Changeover function of
an installed thermostat is enabled when used in conjunction with
the Humidi-MiZer Adaptive Dehumidification system.
Humidi-MiZer System Space RH Controller
The Humidi-MiZer dehumidification system requires a field-
supplied and field-installed space relative humidity control de
-
vice. This device may be a separate humidistat control (contact
closes on rise in space RH above control setpoint) or a combina
-
tion thermostat-humidistat control device with isolated contact
set for dehumidification control. See Fig. 63. The humidistat is
normally used in applications where a temperature control is al
-
ready provided (units with RTU Open control), or a ZS series
sensor with humidity sensing. SystemVu™ controls require a
Space Humidistat (HL38MG029), a Wall Mount Space Humidi
-
ty Sensor (33ZCSENSRH-01), or a Duct Mount Humidity Sen
-
sor (33ZCSENDRH-01).
NOTE: 50LC14-26 units require a 3-stage cooling thermostat de
-
vice and are not compatible with Carrier’s Edge
®
Pro thermidistat.
Fig. 63 —
Accessory Field-Installed Humidistat
CONTROL BOX
ACCESS
PANEL
FILTER AND
INDOOR COIL
ACCESS
PANEL
INDOOR BLOWER
ACCESS PANEL
ELECTRIC HEAT
ACCESS PANEL
INDOOR BLOWER
ACCESS PANEL
HEATER
MODULE
FILTER
AREA
MAIN CONTROL
BOX
ELECTRIC HEATER
TRACKS
ELECTRIC HEATER
OPENING
INTEGRATED
STAGING
CONTROL
(ICS)
BOARD
% RELATIVE HUMIDITY
Summary of Contents for WeatherExpert 50LC14
Page 4: ...4 Fig 2 50LC Vertical Airflow Size 14...
Page 5: ...5 Fig 3 50LC Horizontal Airflow Size 14...
Page 6: ...6 Fig 4 50LC Back View and Condensate Drain Location Size 14...
Page 7: ...7 Fig 5 50LC Corner Weights and Clearances Size 14...
Page 8: ...8 Fig 6 50LC Bottom View Size 14...
Page 9: ...9 Fig 7 50LC Vertical Airflow Sizes 17 20...
Page 10: ...10 Fig 8 50LC Horizontal Airflow Sizes 17 20...
Page 11: ...11 Fig 9 50LC Back View and Condensate Drain Location Sizes 17 20...
Page 12: ...12 Fig 10 50LC Corner Weights and Clearances Sizes 17 20...
Page 13: ...13 Fig 11 50LC Bottom View Sizes 17 20...
Page 14: ...14 Fig 12 50LC Vertical Airflow Sizes 24 26...
Page 15: ...15 Fig 13 50LC Horizontal Airflow Sizes 24 26...
Page 16: ...16 Fig 14 50LC Back View and Condensate Drain Location Sizes 24 26...
Page 17: ...17 Fig 15 50LC Corner Weights and Clearances Sizes 24 26...
Page 18: ...18 Fig 16 50LC Bottom View Sizes 24 26...
Page 21: ...21 Fig 19 Roof Curb Details 14 Size Unit...
Page 22: ...22 Fig 20 Roof Curb Details 17 and 20 Size Units...
Page 23: ...23 Fig 21 Roof Curb Details 24 and 26 Size Units...
Page 30: ...30 Fig 42 50LC 14 26 Electro Mechanical Control Wiring Diagram...
Page 31: ...31 Fig 43 50LC 14 26 RTU Open Control Wiring Diagram...
Page 32: ...32 Fig 44 50LC 14 26 SystemVu Control Wiring Diagram...
Page 35: ...35 Fig 47 Typical Power Wiring Diagram SystemVu Controls 50LC Unit 208 230V Shown...
Page 36: ...36 Fig 48 Typical Power Wiring Diagram SystemVu Controls 50LC Unit 460V 575V Shown...
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