Specifications

32
Table 33 — Setpoints
Table 34 — Supply Air Reset Configuration
Table 35 — Cooling Configuration
Capacity Threshold Adjust (
Z.GN) — This configuration is
used for units using the “SumZ” algorithm for cooling capacity
control (Configuration → UNIT → C.TYP =1,2,3or5).The
configuration affects the cycling rate of the cooling stages by
raising or lowering the threshold that demand must build to 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.
Compressor Lockout Temperature (
MC.LO) — This config-
uration is the outdoor air temperature setting below which
mechanical cooling is locked out.
Fan-Off Delay, Mech Cool (
C.FOD) — After a mechanical
cooling cycle has ended, this is the delay in seconds that the
supply fan will continue to operate.
Min. Load Valve (HGBP)? (
MLV) — This configuration in-
structs the control as to whether a minimum load valve has
been installed and will be controlled by the compressor staging
routine.
MotorMaster Control? (
M.M.) — The condenser fan staging
control for the unit is managed directly by the ComfortLink™
control. There is no physical Motormaster® device in the
standard unit. The standard unit is capable of mechanical
cooling operation down to 35 F outdoor temperature. With the
addition of accessory Motormaster V speed control on the
stage 1 condenser fan(s), mechanical cooling operation down
to 0° F outdoor temperature is possible. The accessory Motor-
master V speed control is a completely self-contained control
and is not controlled by the unit’s ComfortLink control. The
Motormaster control configuration (M.M.) only applies to the
060 size units. On 060 size units with accessory Motormaster
V speed control installed, this configuration must be set to
YES. On 060 size units without accessory Motormaster V
speed control installed and on all 020-050 size units, this
configuration must be set to NO. On 060 size units with this
configuration set to NO, the ComfortLink control will control
3 stages of condenser fan head pressure control. With this
configuration set to YES, the ComfortLink control will control
2 stages of condenser fan head pressure control in addition to
the Motormaster V speed control accessory. See Head Pressure
Control section, page 40, for more information.
Head Pressure Set Point (
HPSP) — This is the head pressure
set point used by the ComfortLink control during condenser
fan, head pressure control.
Enable Compressor A1 (
A1.EN) — This configuration is
used to disable the A1 compressor in case of failure.
Enable Compressor A2 (
A2.EN) — This configuration is
used to disable the A2 compressor in case of failure.
Enable Compressor B1 (
B1.EN) — This configuration is
used to disable the B1 compressor in case of failure.
Enable Compressor B2 (
B2.EN) — This configuration is
used to disable the B2 compressor in case of failure.
CSB A1 Feedback Alarm (
CS.A1) — This configuration is
used to enable or disable the compressor A1 feedback alarm.
This configuration must be enabled at all times.
CSB A2 Feedback Alarm (
CS.A2) — This configuration is
used to enable or disable the compressor A2 feedback alarm.
This configuration must be enabled at all times.
CSB B1 Feedback Alarm (
CS.B1) — This configuration is
used to enable or disable the compressor B1 feedback alarm.
This configuration must be enabled at all times.
CSB B2 Feedback Alarm (
CS.B2) — This configuration is
used to enable or disable the compressor B2 feedback alarm.
This configuration must be enabled at all times.
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULT
OHSP Occupied Heat Setpoint 55-80 dF OHSP 68
OCSP Occupied Cool Setpoint 55-80 dF OCSP 75
UHSP Unoccupied Heat Setpoint 40-80 dF UHSP 55
UCSP Unoccupied Cool Setpoint 75-95 dF UCSP 90
GAP Heat-Cool Setpoint Gap 2-10 deltaF HCSP_GAP 5
V.C.ON VAV Occ. Cool On Delta 0-25 deltaF VAVOCON 3.5
V.C.OF VAV Occ. Cool Off Delta 1-25 deltaF VAVOCOFF 2
SASP Supply Air Setpoint 45-75 dF SASP 55
SA.HI Supply Air Setpoint Hi 45-75 dF SASP_HI 55
SA.LO Supply Air Setpoint Lo 45-75 dF SASP_LO 60
SA.HT Heating Supply Air Setpt 90-145 dF SASPHEAT 85
T.PRG Tempering Purge SASP –20-80 dF TEMPPURG 50
T.CL Tempering in Cool SASP 5-75 dF TEMPCOOL 5
T.V.OC Tempering Vent Occ SASP –20-80 dF TEMPVOCC 65
T.V.UN Tempering Vent Unocc. SASP –20-80 dF TEMPVUNC 50
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULTS
EDT.R EVAP.DISCHRGE TEMP RESET
RS.CF EDT Reset Configuration 0 - 3 EDRSTCFG 2
RTIO Reset Ratio 0 - 10 RTIO 2
LIMT Reset Limit 0 - 20 deltaF LIMT 10
RES.S EDT 4-20 ma Reset Input Enable/Disable EDTRSENS Disable
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULTS
COOL COOLING CONFIGURATION
Z.GN Capacity Threshold Adjst –10 - 10 Z_GAIN 1
MC.LO Compressor Lockout Temp –20 - 55 dF OATLCOMP 40
C.FOD Fan-Off Delay, Mech Cool 0-600 sec COOL_FOD 60
MLV Min. Load Valve (HGBP)? Yes/No MLV_SEL No
M.M. Motor Master Control ? Yes/No MOTRMAST No
HPSP Head Pressure Setpoint 80 - 150 dF HPSP 113
A1.EN Enable Compressor A1 Enable/Disable CMPA1ENA Enable
A2.EN Enable Compressor A2 Enable/Disable CMPA2ENA Enable
B1.EN Enable Compressor B1 Enable/Disable CMPB1ENA Enable
B2.EN Enable Compressor B2 Enable/Disable CMPB2ENA Enable
CS.A1 CSB A1 Feedback Alarm Enable/Disable CSB_A1EN Enable
CS.A2 CSB A2 Feedback Alarm Enable/Disable CSB_A2EN Enable
CS.B1 CSB B1 Feedback Alarm Enable/Disable CSB_B1EN Enable
CS.B2 CSB B2 Feedback Alarm Enable/Disable CSB_B2EN Enable
REV.R Rev. Rotation Verified? Yes/No REVR_VER No