Installation; Optional Field-Supplied Hardware; Wall-Mounted Space Temperature Sensor; Relative Humidity Sensor - Carrier 42C Installation And Start-Up Instructions Manual

SUPPLY AIR TEMPERATURE (SAT) SENSOR — The fan
coil controller must be connected to a factory-supplied supply-
air temperature (SAT) sensor (part number HH79NZ005) to
monitor the temperature of the air delivered by the fan coil.
CHANGEOVER SENSOR — The 33ZCSENCHG change-
over sensor is used by the fan coil controller in 2-pipe applica-
tions to determine the temperature of the heating and cooling
medium which is supplied to the fan coil by the building piping
system. The fan coil controller can then determine if it is capa-
ble of providing heating or cooling to the space based on sens-
ing the pipe water temperature. This value may be broadcast to
other fan coils.
Optional Field-Supplied Hardware —
controller can support the following field-supplied components
to complete its installation:
• wall-mounted space temperature sensor (as required)
• indoor air quality sensor (as required)
• relative humidity sensor (as required)
• linkage thermostat (as required)
WALL-MOUNTED SPACE
SOR — Each fan coil controller can support a field-supplied
Carrier space temperature sensor. There are three sensors avail-
able for this application:
• 33ZCT55SPT, Space Temperature Sensor with Override
Button
• 33ZCT56SPT, Space Temperature Sensor with Override
Button and Set Point Adjustment
• 33ZCT57SPT, Space Temperature Sensor with Override
Button, Set Point Adjustment, and Manual Fan Speed
control
RELATIVE HUMIDITY SENSOR — The 33AMSENRHS000
relative humidity sensor is an indoor, wall-mounted sensor and is
required for zone humidity control (dehumidification).
C US
®
ZONE Controller
Part Number: 33ZCFANCOL
S/N:
Bus#:
Element#:
Unit#:
1
Fig. 1 — Fan Coil Controller (33ZCFANCOL)
Each fan coil
TEMPERATURE SEN-
+24V
RH
SPT
GND
GND
FAN AC
IAQ
SAT
FAN ON
+10V
LOW
T56
MED
SPEED
GND
HIGH
GND
CNGOVR
CONDSW
REMOTE
GND
LED1
LED2
+
24VAC
+
OAD ENA
J5
+
6
INDOOR AIR QUALITY (CO
quality sensor is required for IAQ monitoring. Two different
CO sensors are available for zone CO
2
The 33ZCSENCO2 sensor is an indoor, wall mounted sen-
sor with an LED (light-emitting diode) display.
The 33ZCT56CO2 sensor is an indoor, wall mounted sen-
sor without display. The CO
perature sensor with override button and temperature offset.
LINKAGE THERMOSTAT —
(33CSKITLST-01) is used to control multiple units from a sin-
gle thermostat. The linkage thermostat provides thermostat
functions for up to 8 units. The fan operates in Auto mode only
when multiple units are controlled by the linkage thermostat.
Thermostat functions include space temperature sensing, set
point adjustment, and occupancy scheduling. The linkage ther-
mostat can be used in place of any space temperature sensor.
For fail-safe operation, it is recommended to include a
HH79NZ005 return air sensor mounted in the return air duct of
the unit.
Control Power —
power transformer is supplied for each fan coil controller.
Transformers are UL (Underwriters' Laboratories) Class 2 rat-
ed. Standard applications require a 24 VAC transformer, rated
at 40 VA minimum. All transformer secondaries are grounded.
The control transformer secondary is 24 vac nominal at
40 va (50/60 Hz).
The factory-supplied transformer provides sufficient power
to supply the DDC fan coil controller and the fan relay board.
The fan relay board is used to interface between the DDC
fan coil controller's 24-vac control voltage outputs and the
fan's line voltage connections.
2
) SENSOR — An indoor air
2
level monitoring.
2
sensor also includes a space tem-
2
The linkage thermostat
An individual, factory-supplied, 24 vac