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• 1 = SPT RESET
Space temperature will be used as the reset control variable
along with both RTIO and LIMT in the calculation of the
final amount of reset to be applied (Inputs
SA.S.R).
• 2 = RAT RESET
Return-air temperature will be used as the reset control vari-
able along with both RTIO and LIMT in the calculation of
the final amount of reset to be applied (Inputs
SA.S.R).
• 3 = 3RD PARTY RESET
The reset value is determined by a 4 to 20 mA third party
input. An input of 4 mA would correspond to 0º F reset. An
input of 20 mA would correspond to 20º F reset. Configur-
ing the control for this option will cause RES.S to become
enabled automatically with the CEM board. To avoid
alarms make sure the CEM board and third party input are
connected first before enabling this option.
Reset Ratio (RTIO) — This configuration is used when
RS.CF is set to 1 or 2. For every degree that the controlling
temperature (space/return) falls below the occupied cooling
setpoint (OCSP), the calculated value of the supply air reset
ITEM
OHSP
Occupied Heat Setpoint
OCSP
Occupied Cool Setpoint
UHSP
Unoccupied Heat Setpoint
UCSP
Unoccupied Cool Setpoint
GAP
Heat-Cool Setpoint Gap
V.C.ON
VAV Occ. Cool On Delta
V.C.OF
VAV Occ. Cool Off Delta
SASP
Supply Air Setpoint
SA.HI
Supply Air Setpoint Hi
SA.LO
Supply Air Setpoint Lo
SA.HT
Heating Supply Air Setpt
T.PRG
Tempering Purge SASP
T.CL
Tempering in Cool SASP
T.V.OC
Tempering Vent Occ SASP
T.V.UN
Tempering Vent Unocc. SASP
ITEM
EDT.R
EVAP.DISCHRGE TEMP RESET
RS.CF
EDT Reset Configuration
RTIO
Reset Ratio
LIMT
Reset Limit
RES.S
EDT 4-20 ma Reset Input
ITEM
EXPANSION
COOL
COOLING CONFIGURATION
Z.GN
Capacity Threshold Adjst
MC.LO
Compressor Lockout Temp
C.FOD
Fan-Off Delay, Mech Cool
MLV
Min. Load Valve (HGBP)?
M.M.
Motor Master Control ?
MM.OF
Motor Master Setpoint Offset
MM.RR
Motor Master PD Run Rate
MM.PG
Motor Master Proportional Gain
MM.DG
Motor Master Derivative Gain
MM.TI
Motor Master Integration Time
DS.EN
Enable Digital Scroll?
DS.MC
DS Min Digital Capacity
DS.AP
Dig Scroll Adjust Delta
DS.AD
Dig Scroll Adjust Delay
DS.RP
Dig Scroll Reduce Delta
DS.RD
Dig Scroll Reduce Delay
DS.RO
Dig Scroll Reduction OAT
DS.MO
Dig Scroll Max Only OAT
HPSP
Head Pressure Setpoint
A1.EN
Enable Compressor A1
A2.EN
Enable Compressor A2
B1.EN
Enable Compressor B1
B2.EN
Enable Compressor B2
CS.A1
CSB A1 Feedback Alarm
CS.A2
CSB A2 Feedback Alarm
CS.B1
CSB B1 Feedback Alarm
CS.B2
CSB B2 Feedback Alarm
REV.R
Rev. Rotation Verified?
H.SST
Hi SST Alert Delay Time
RSET
RSET
Table 34 — Setpoints
EXPANSION
Table 35 — Supply Air Reset Configuration
EXPANSION
Table 36 — Cooling Configuration
RANGE
–10 - 10
–20 - 55
0-600
Yes/No
Yes/No
–20 - 20
10-120
0.0-5
0-5
0-50
Yes/No
25 - 100
0 - 100
15 - 60
0 - 100
15 - 60
70 - 120
70 - 120
80 - 150
Enable/Disable
Enable/Disable
Enable/Disable
Enable/Disable
Enable/Disable
Enable/Disable
Enable/Disable
Enable/Disable
Yes/No
5 - 30
will rise by the number of degrees as specified by this
parameter.
Reset Limit (LIMT) — This configuration is used when
RS.CF is set to 1 or 2. This configuration places a clamp on the
amount of supply air reset that can be applied.
EDT 4-20 mA Reset Input (RES.S) — This configuration is
automatically
enabled
RS.CF is set to 3 (third party reset).
COOLING CONFIGURATION — Relevant configurations for
mechanical cooling are located at the local display under
Configuration
COOL. See Table 36.
Capacity Threshold Adjust (Z.GN) — This configuration is
used for units using the "SumZ" algorithm for cooling capacity
control (Configuration
configuration affects the cycling rate of the cooling stages by
raising or lowering the threshold that demand must rise above
in order to add or subtract a stage of cooling.
Normally this configuration should not require any tuning or
adjustment. If there is an application where the unit may be sig-
nificantly oversized and there are indications of high compres-
sor cycles, then the Capacity Threshold Adjust (Z.GN) can be
used to adjust the overall logic gain. Normally this is set to 1.0,
but it can be adjusted from 0.5 to 4.0. As the value of Z.GN is
increased, the cycling of cooling stages will be slowed.
RANGE
UNITS
40-99
dF
40-99
dF
40-99
dF
40-99
dF
2-10
^F
0-25
^F
1-25
^F
45-75
dF
45-75
dF
45-75
dF
90-145
dF
–20-80
dF
5-75
dF
–20-80
dF
–20-80
dF
RANGE
UNITS
0 - 3
0 - 10
0 - 20
^F
Enable/Disable
UNITS
CCN POINT
Z_GAIN
dF
OATLCOMP
sec
COOL_FOD
MLV_SEL
MOTRMAST
dF
MMSPOFST
sec
MM_RATE
MM_PG
MM_DG
MM_TI
DIGCMPEN
%
MINCAPDS
%
DSADJPCT
sec
DSADJDLY
%
DSREDPCT
sec
DSREDDLY
dF
DSREDOAT
dF
DSMAXOAT
dF
HPSP
CMPA1ENA
CMPA2ENA
CMPB1ENA
CMPB2ENA
CSB_A1EN
CSB_A2EN
CSB_B1EN
CSB_B2EN
REVR_VER
min
HSSTTIME
33
when
Configuration
UNIT
C.TYP = 1, 2, 3 or 5). The
CCN POINT
DEFAULT
OHSP
68
OCSP
75
UHSP
55
UCSP
90
HCSP_GAP
5
VAVOCON
3.5
VAVOCOFF
2
SASP
55
SASP_HI
55
SASP_LO
60
SASPHEAT
85
TEMPPURG
50
TEMPCOOL
5
TEMPVOCC
65
TEMPVUNC
50
CCN POINT
DEFAULT
EDRSTCFG
0
RTIO
2
LIMT
10
EDTRSENS
Disable
DEFAULT
1
40
60
No
No
–10
10
1
0.3
30
No
50
100
20
6
30
95
105
110
Enable
Enable
Enable
Enable
Enable
Enable
Enable
Enable
No
10
EDT.R
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