84
Table 68 — Building Pressure Configuration
BP 1 Actuator Max Pos. (BP.1M)
For BP.CF = 2, this configuration is the maximum actuator no. 1
position during building pressure control.
BP 2 Actuator Max Pos. (BP.2M)
For BP.CF = 2, this configuration is the maximum actuator no. 2
position during building pressure control.
BP Hi Cap VFD Clamp Val. (BP.CL)
For BP.CF = 4, this configuration is a limit that creates a deadband
which controls the action of the second power exhaust relay.
Fan Track Learn Enable (FT.CF)
Do not use the fan track learning disable setting unless a system
air balance has been done to determine the correct FT.MX and
FT.MN values. Allowing these values to run without proper
clamps can cause system damage inside the building.
For BP.CF = 5, this return/exhaust control configuration selects
whether the fan tracking algorithm will make corrections over
time and add a learned offset to FT.ST. If this configuration is set
to No, the unit will try to control the delta cfm value between the
supply and return VFDs only based on FT.ST.
Fan Track Initial DCFM (FT.ST)
For BP.CF = 5, this return/exhaust control configuration is the
start point upon which corrections (offset) are made over time
when FT.CF = Yes. It is the constant control point for delta cfm
control when FT.CF = No.
Fan Track Minimum Clamp (FT.MN)
For BP.CF = 5, this return/exhaust control configuration is the
minimum positive delta cfm control value allowed unless outdoor
air cfm control is available and then the delta cfm control value
would be clamped to the outdoor air cfm value directly (see the
Economizer section on page 75 for a description of outdoor air
cfm configuration).
Fan Track Max Clamp (FT.MX)
For BP.CF = 5, this return/exhaust control configuration is the
maximum positive delta cfm control value allowed unless outdoor
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT
BP BUILDING PRESS. CONFIGS
BP.CF Building Press. Config 0 to 6 BLDG_CFG 0
a
a. Some configurations are model number dependent.
BP.S Building Pressure Sensor Enable/Disable BPSENS Disable
a
BP.R Bldg. Press. (+/-) Range 0.10 to 0.25 "H2O BP_RANGE 0.25
BP.SP Building Pressure Setp. –0.25 to 0.25 "H2O BPSP 0.05
BP.SO BP Setpoint Offset 0 to 0.5 "H2O BPSO 0.05
BP.P1 Power Exhaust On Setp.1 0 to 100 % PES1 25
BP.P2 Power Exhaust On Setp.2 0 to 100 % PES2 75
B.V.A VFD/ACTUATOR CONFIG
BP.FS VFD/Act. Fire Speed/Pos. 0 to 100 % BLDGPFSO 100
BP.MN VFD/Act. Min.Speed/Pos. 0 to 50 % BLDGPMIN 10
BP.MX VFD Maximum Speed 50 to 100 % BLDGPMAX 100
BP.1M BP 1 Actuator Max Pos. 85 to 100 % BP1SETMX 100
BP.2M BP 2 Actuator Max Pos. 85 to 100 % BP2SETMX 100
BP.CL BP Hi Cap VFD Clamp Val. 5 to 25 % BLDGCLMP 10
FAN.T FAN TRACKING CONFIG
FT.CF Fan Track Learn Enable Yes/No DCFM_CFG No
FT.TM Fan Track Learn Rate 5 to 60 min DCFMRATE 15
FT.ST Fan Track Initial DCFM –20000 to 20000 CFM DCFMSTRT 2000
FT.MX Fan Track Max Clamp 0 to 20000 CFM DCFM_MAX 4000
FT.MN Fan Track Minimum Clamp –20000 to 0 CFM DCFM_MIN –1000
FT.AD Fan Track Max Correction 0 to 20000 CFM DCFM_ADJ 1000
FT.OF Fan Track Internl EEPROM –20000 to 20000 CFM DCFM_OFF 0
FT.RM Fan Track Internal RAM –20000 to 20000 CFM DCFM_RAM 0
FT.RS Fan Track Reset Internal Yes/No DCFMRSET No
SCF.C Supply Air CFM Config 1 to 2 SCFM_CFG 1
B.PID BLDG.PRESS.PID CONFIGS
BP.TM Bldg.Pres.PID Run Rate 5 to 120 sec BPIDRATE 10
BP.P Bldg.Press. Prop. Gain 0 to 5 BLDGP_PG 0.5
BP.I Bldg.Press. Integ. Gain 0 to 2 BLDGP_IG 0.5
BP.D Bldg.Press. Deriv. Gain 0 to 5 BLDGP_DG 0.3
ACT.C BLDG.PRES. ACTUATOR CFGS
BP.1 BLDG.PRES. ACT.1 CONFIGS
SN.1 BP 1 Serial Number 1 0 to 9999 BP_1_SN1 0
SN.2 BP 1 Serial Number 2 0 to 6 BP_1_SN2 0
SN.3 BP 1 Serial Number 3 0 to 9999 BP_1_SN3 0
SN.4 BP 1 Serial Number 4 0 to 254 BP_1_SN4 0
C.A.LM BP1 Cntrl Angle Lo Limit 0 to 90 BP1_CALM 35
BP.2 BLDG.PRES. ACT.2 CONFIGS
SN.1 BP 2 Serial Number 1 0 to 9999 BP_2_SN1 0
SN.2 BP 2 Serial Number 2 0 to 6 BP_2_SN2 0
SN.3 BP 2 Serial Number 3 0 to 9999 BP_2_SN3 0
SN.4 BP 2 Serial Number 4 0 to 254 BP_2_SN4 0
C.A.LM BP2 Cntrl Angle Lo Limit 0 to 90 BP2_CALM 35
WARNING
Fan tracking learning is a system dependent operation and
should not be used with default values.
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