Carrier RHW036-060, Installation Instructions Manual

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527 01 2701 00
Specifications subject to change without notice.
29
NOTE: Some parameters in the menus use the letters
MA or MAT, indicating a mixed air temperature sensor lo -
cation before the cooling coil. This unit application has
the control sensor located after the cooling coil, in the fan
section, where it is designated as (Cooling) Supply Air
Temperature or SAT sensor.
IMPORTANT: Table 9 illustrates the complete hierarchy.
Your menu parameters may be different depending on
your configuration.
For example if you do not have a DCV (CO
2
) sensor, then
none of the DCV parameters appear and only MIN POS
will display. If you have a CO
2
sensor, the DCV MIN and
DCV MAX will appear.
Table 9 — W7220 Menu Structure*
MENU PARAMETER
PARAMETER
DEFAULT
VALUE
PARAMETER
RANGE AND
INCREMENT
†
NOTES
STATUS
ECONO AVAIL NO YES/NO FIRST STAGE COOLING DEMAND (Y1–IN)
YES = economizing available; the system can use outside air for free
cooling when required
ECONOMIZING NO YES/NO FIRST STAGE COOLING RELAY OUTPUT
YES = outside air being used for 1 stage cooling
OCCUPIED NO YES/NO OCCUPIED
YES = OCC signal received from space thermostat or unitary
controller
YES = 24 Vac on terminal OCC
NO = 0 Vac on terminal OCC
HEAT PUMP N/A** COOL
HEAT
HEAT PUMP MODE
Displays COOL or HEAT when system is set to heat pump
(Non-conventional)
COOL Y1—IN OFF ON/OFF FIRST STAGE COOLING DEMAND (Y1-IN)
Y1–I signal from space thermostat or unitary controller for cooling
stage 1.
ON = 24 Vac on terminal Y1–I
OFF = 0 Vac on terminal Y1–I
COOL Y1—OUT OFF ON/OFF FIRST STAGE COOLING RELAY OUTPUT
Cool stage 1 Relay Output to stage 1 mechanical cooling
(Y1–OUT terminal)
COOL Y2—IN OFF ON/OFF SECOND STAGE COOLING DEMAND (Y2–IN)
Y2–I signal from space thermostat our unitary controller for second
stage cooling.
ON = 24 Vac on terminal Y2–I
OFF = 0 Vac on terminal Y2–I
COOL Y2—OUT OFF ON/OFF SECOND STAGE COOLING RELAY OUTPUT
Cool Stage 2 Relay Output to mechanical cooling
(Y2–OUT terminal)
MA TEMP _ _ . _ F 0 to 140 F SUPPLY AIR TEMPERATURE, Cooling Mode
Displays value of measured mixed air from MAT sensor.
Displays _ _ . _ F if not connected, short or out-of-range.
DA TEMP _ _ . _ F 0 to 140 F DISCHARGE AIR TEMPERATURE, after Heating section
Displays when Discharge Air sensor is connected and displays
measured discharge temperature.
Displays _ _ . _F if sensor sends invalid value, if not connected, short
or out-of-range.
OA TEMP _ _ . _ F -40 to 140 F OUTSIDE AIR TEMP
Displays measured value of outdoor air temperature.
Displays _ _ . _F if sensor sends invalid value, short or out-of-range.
OA HUM _ _ % 0 to 100% OUTSIDE AIR RELATIVE HUMIDITY
Displays measured value of outdoor humidity from OA sensor.
Displays _ _% if not connected short, or out-of-range.
RA TEMP _ _ . _ F 0 to 140 F RETURN AIR TEMPERATURE
Displays measured value of return air temperature from
RAT sensor.
Displays _ _ . _ F if sensor sends invalid value, if not connected, short
or out-of-range
RA HUM _ _ % 0 to 100% RETURN AIR RELATIVE HUMIDITY
Displays measured value of return air humidity from RA sensor.
Displays _ _% if sensor sends invalid value, if not connected, short or
out-of-range
IN CO2 _ _ _ ppm 0 to 2000 ppm SPACE/RETURN AIR CO
2
Displays value of measured CO
2
from CO
2
sensor. Invalid if not
connected, short or out-of-range
DCV STATUS N/A ON/OFF DEMAND CONTROLLED VENTILATION STATUS
Displays ON if above setpoint and OFF if below setpoint, and ONLY if
a CO
2
sensor is connected.
DAMPER OUT 2.0v 2.0 to 10.0v Displays voltage output to the damper actuator.
ACT POS N/A 0 to 100% Displays actual position of outdoor air damper actuator
ACT COUNT N/A 1 to 65535 Displays number of times actuator has cycled.
1 cycle equals 180 deg. of actuator movement in any direction.