Carrier Weathermaster 48P030-100 - Humidification

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There are three set point configurations:
O.C.MN — Econ OACFM DCV Min Flow
O.C.MX — Econ OACFM DCV Max Flow
O.C.DB — Econ OACFM MinPos Deadbd
When the outdoor air cfm sensor is enabled, the Economizer
Min.Position (Configuration
 IAQ  DCV.C  EC.MN) and the
IAQ Demand Vent Min.Pos (Configuration
 IAQ  DCV.C 
IAQ.M) will no longer be used. During vent periods, the control
modulates the damper to maintain the outdoor air intake quantity
between O.C.MX and O.C.MN. The indoor air quality algorithm
varies the cfm between these two values depending on Configura-
tion
 IAQ  AQ.SP  DAQ.L and the Configuration  IAQ 
AQ.SP  DAQ.H set points and upon the relationship between the
IAQ and the outdoor air quality (OAQ).
The economizer’s OA CFM Minimum Position Deadband
(O.C.DB) is the deadband range around the outdoor cfm control
point at where the damper control will stop, indicating the control
point has been reached. See the Economizer section on page 75.
Humidification
The P Series ComfortLink controls can control a field-supplied
and installed humidifier device. The ComfortLink controls pro-
vide two types of humidification control: A discrete stage control
(via a relay contact) and a proportional control type (communicat-
ing to a LEN actuator). The discrete stage control is used to con-
trol a single-stage humidifier, (typically a spray pump). The pro-
portional control type is typically used to control a proportional
steam valve serving a steam grid humidifier.
The ComfortLink controls must be equipped with a controls ex-
pansion module and an accessory space or return air relative hu-
midity sensor.
If a humidifier using a proportional steam valve is selected, the
Carrier actuator (Carrier Part No. HF23BJ050) must be adapted
to the humidifier manufacturer’s steam valve. Contact Belimo
Aircontrols for information on actuator linkage adapter packages
required to mount the actuator on the specific brand and type of
steam valve mounted by the humidifier manufacturer.
The actuator address must be programmed into the ComfortLink
unit’s humidifier actuator serial number variables.
SETTING UP THE SYSTEM
These humidity configuration are located in the local displays un-
der Configuration
 HUMD. See Table 70. Related points are
shown in Table 71.
Humidifier Control Configuration (HM.CF)
The humidifier control can be set to the following configurations:
HM.CF = 0 — No humidity control.
HM.CF = 1 — Discrete control based on space relative
humidity.
HM.CF = 2 — Discrete control based on return air relative
humidity.
HM.CF = 3 — Analog control based on space relative
humidity.
HM.CF = 4 — Analog control based on return air relative
humidity.
Humidity Control Set Point (HM.SP)
The humidity control set point has a range of 0 to 100%.
Humidifier PID Run Rate (HM.TM)
This is the PID run time rate.
Humidifier Proportional Gain (HM.P)
This configuration is the PID Proportional Gain.
Humidifier Integral Gain (HM.I)
This configuration is the PID Integral Gain.
Humidifier Derivative Gain (HM.D)
This configuration is the PID Derivative Gain.
Table 70 — Humidity Configuration
Table 71 — Related Humidity Points
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT
HUMD HUMIDITY CONFIGURATION
HM.CF Humidifier Control Cfg. 0 to 4 HUMD_CFG 0
HM.SP Humidifier Setpoint 0 to 100 % HUSP 40
H.PID HUMIDIFIER PID CONFIGS
HM.TM Humidifier PID Run Rate 10 to 120 sec HUMDRATE 30
HM.P Humidifier Prop. Gain 0 to 5 HUMID_PG 1
HM.I Humidifier Integral Gain 0 to 5 HUMID_IG 0.3
HM.D Humidifier Deriv. Gain 0 to 5 HUMID_DG 0.3
ACT.C HUMIDIFIER ACTUATOR CFGS
SN.1 Humd Serial Number 1 0 to 9999 HUMD_SN1 0
SN.2 Humd Serial Number 2 0 to 6 HUMD_SN2 0
SN.3 Humd Serial Number 3 0 to 9999 HUMD_SN3 0
SN.4 Humd Serial Number 4 0 to 254 HUMD_SN4 0
C.A.LM Humd Ctrl Angle Lo Limit 0 to 90 HUMDCALM 85
ITEM EXPANSION UNITS CCN POINT WRITE STATUS
ConfigUNITSENSSRH.S Space Air RH Sensor SPRHSENS
ConfigUNITSENSRRH.S Return Air RH Sensor RARHSENS
InputsREL.HRA.RH Return Air Rel. Humidity % RARH forcible
InputsREL.HSP.RH Space Relative Humidity % SPRH forcible
OutputsACTUHMD.P Humidifier Act.Curr.Pos. % HUMDRPOS
OutputsACTUHMD.C Humidifier Command Pos. % HUMDCPOS
OutputsGEN.OHUM.R Humidifier Relay HUMIDRLY