47
Space Humidity Switch (
Configuration
→
UNIT
→
RH.SW)
— Set to 1 for use of a normally open switch, or 2 for normally
closed switch. The switch is wired to field connection terminal
board terminals labeled HUMDISTAT.
RH Sensor on OAQ Input (
Configuration
→
UNIT
→
RH.S)
— Set to Yes for use of a 4 to 20 mA output RH sensor wired to
field connection terminal board terminals 3 and 4. If using an
RH sensor, the following configurations also apply:
Space RH Setpoint (
Setpoints
→
RH.SP) — This sets the
target % relative humidity.
Space RH Deadband (
Setpoints
→
RH.DB) — This sets the
control ± deadband for % relative humidity.
RH Sensor Value at 4ma (
Configuration
→
AIR.Q
→
H.4M)
— This sets the % display for a 4mA input from the relative
humidity sensor.
RH Sensor Value at 20ma (
Configuration
→
AIR.Q
→
H.20M) — This sets the % display for a 20mA input from the
relative humidity sensor.
Reheat Heat SP Deadband (
Setpoints
→
RH.HB) — If the
unit is configured for use of a space temperature sensor instead
of a thermostat (Configuration
→
UNIT
→
U.CTL = Yes), then
this configuration applies. This configuration sets the offset
above the heating set point at which a unit in Reheat2 mode
will turn off. This is a protection against over cooling the space
and causing a heat demand.
Other configurations affecting the Humidi-MiZer operation
are located at Configuration
→
HMZR. See Appendix A.
NOTE: These configurations are dependent on the specific
unit and should not be changed. The configurations are
provided in case a field replacement of a control board occurs
and the settings need to be checked or manually configured.
Humidimizer Equipped (
REHT) — Set to Yes for Humidi-
MiZer equipped units. Enables Humidi-MiZer operating
modes and service test.
Reheat2 Stage Decr. Time (
R.DEC) — If using adaptive con-
trol mode, then this is a time delay in staged decrease of
multiple circuits in Reheat2 mode. This delay is overridden by
a zero demand for dehumidification or a positive demand for
cooling.
Reheat2 Stage Incr. Time (
R.INC) — If using adaptive con-
trol mode, then this is a time delay in staged increase of multi-
ple circuits in Reheat2 mode.
Reheat Fan Control (
RH.FN) — Enables model specific
outdoor fan control for certain models equipped with
Humidi-MiZer system.
Reheat ODF Fan On Level (
RF.LV) — Sets the Reheat2
mode outdoor fan level in some model specific fan control.
Reheat2 ODF Fan On Temp (
RF.ON) — Sets the Reheat2
mode change temperature to increased outdoor fan level.
Reheat2 ODF Fan Off Temp (
RF.OF) — Sets the Reheat2
mode change temperature to decrease outdoor fan level.
Reheat2 OAT Limit A (
RA.LO) — This configuration is the
low outdoor air temperature limit for Reheat2 mode for circuit
A. It will disable or enable circuit A.
Reheat2 SSP Lo Limit A (
RA.LP) — This configuration is
the low pressure limit for Reheat2 mode for circuit A. It will
turn valve RH2.A off.
Reheat2 SSP Hi Limit A (
RA.HP) — This configuration is
the high pressure limit for Reheat2 mode for circuit A. If low
pressure limit previously occurred, this limit will turn valve
RH2.A back on after 2-minute delay.
Reheat2 OAT Limit B,C (
RB.LO) — This configuration is
the low outdoor air temperature limit for Reheat2 mode for
circuit B. It will disable or enable circuit B.
Reheat2 SSP Lo Limit B,C (
RB.LP) — This configuration is
the low pressure limit for Reheat2 mode for circuit B. It will
turn valve RH2.B off.
Reheat2 SSP Hi Limit B,C (
RB.HP) — This configuration is
the high pressure limit for Reheat2 mode for circuit B. If low
pressure limit previously occurred, this limit will turn valve
RH2.B back on after 2-minute delay.
COMP
COND COIL
HUMIDI-MIZER COIL
EVAP COIL
INDOOR ENTERING
AIR
OUTDOOR AIR
METERING
DEVICE
CLOSED VALVE
OPEN VALVE
3-WAY VALVE
RH1.x
RH2.x
Fig. 8 — Hot Gas Reheat Mode (Reheat2) — Humidi-MiZer™ System
a48-8224
To Next Page
Loading...
