44
HVAC Mode — FIRE SHUT DOWN (19)
The unit has been stopped due to a fire shutdown input (FSD)
from two or more of the fire control modes, purge, evacuation,
or pressurization.
HVAC Mode — PRESSURIZATION (20)
The unit is in the special fire pressurization mode where the sup-
ply fan is on, the economizer damper is open, and the power ex-
haust fans are off. This mode is invoked by the Fire Pressurization
(PRES) input which can be found in the INPUTFIRE submenu.
HVAC Mode — EVACUATION (21)
The unit is in the special Fire Evacuation mode where the supply
fan is off, the economizer damper is closed, and the power ex-
haust fans are on. This mode is invoked by the Fire Evacuation
(EVAC) input which can be found in the INPUTFIRE submenu.
HVAC Mode — SMOKE PURGE (22)
The unit is in the special Fire Purge mode where the supply fan
is on, the economizer damper is open, and the power exhaust
fans are on. This mode is invoked by the Fire Evacuation
(PURG) input which can be found in the INPUTFIRE submenu.
HVAC Mode — COOLING DEHUM (23)
The unit is operating in the Cooling Dehumidification mode.
On units configured for Humidi-MiZer
®
operation, this is the
Humidi-MiZer dehumidification mode (subcooling).
HVAC Mode — VENTING DEHUM (24)
The unit is operating in Venting Dehumidification mode. On units
configured for Humidi-MiZer operation, this is the Humidi-MiZer
reheat mode.
HVAC Mode — FREEZESTAT TRIP (25)
If the freezestat trips, the unit enters the Freezestat Trip HVAC
mode. The supply fan will run, the hydronic heat valve will be
wide open, and the economizer damper will be closed.
HVAC Mode — PLEN.PRESS.FAIL (26)
The unit is off due to a failure of the plenum pressure switch.
HVAC Mode — RCB COMM FAILURE (27)
The unit is off due to a Rooftop Control Board (RCB) commu-
nication failure.
HVAC Mode — SUPPLY VFD FAULT (28)
The unit is off due to a supply fan VFD fault or supply fan
VFD communications loss.
HVAC Mode — HEATING DEHUMID (29)
The unit is operating in the Heating Dehumidification mode.
Unit Configuration Submenu
The UNIT sub-menu under the Configuration mode of the local
display contains general unit configuration items. This section
will define all of these configurations here for easy reference.
The sub-menu which contains these configurations is located at
the local display under Configuration
UNIT. See Table 31.
Machine Control Type (C.TYP)
This configuration defines the technique and control source re-
sponsible for selecting a cooling, heating, or vent mode and in
determining the method by which compressors are staged. The
control types are:
• C.TYP = 1 (VAV-RAT) and C.TYP = 2 ( VAV-SP T)
Both of these configurations refer to standard VAV opera-
tion. If the control is occupied, the supply fan is run con-
tinuously and return-air temperature will be used in the de-
termination of the selection of a cooling or heating mode.
VAV-SPT differs from VAV-RAT only in that, during the
unoccupied period, space temperature will be used instead
of return-air temperature to start the fan for 10 minutes to
establish an accurate return-air temperature before the re-
turn-air temperature is allowed to call out any mode.
• C.TYP = 3 (TSTAT – MULTI)
This configuration will force the control to monitor the
thermostat inputs to make a determination of mode. Unlike
traditional 2-stage thermostat control, the unit is allowed to
use multiple stages of cooling control and perform VAV-
type operation. The control will be able to call out a LOW
COOL or a HIGH COOL mode and maintain a low or high
cool supply air set point.
• C.TYP = 4 (SPT – MULTI)
This configuration will force the control to monitor a space
temperature sensor to make a determination of mode. Un-
like traditional 2-stage space temperature control, the unit
is allowed to use multiple stages of cooling control and
perform VAV-type operation. The control will be able to
call out a LOW COOL or a HIGH COOL mode and main-
tain a low or high cool supply air set point.
Table 31 — Unit Configuration
ITEM EXPANSION RANGE UNITS CCN POINT DEFAULTS
UNIT UNIT CONFIGURATION
C.TYP Machine Control Type 1 to 6 CTRLTYPE 4
SIZE Unit Size (30-100) 30 to 100 UNITSIZE 30
FN.MD Fan Mode (0=Auto, 1=Cont) 0 to 1 FAN_MODE 1
RM.CF Remote Switch Config 0 to 3 RMTINCFG 0
CEM CEM Module Installed Yes/No CEM_BRD No
TCS.C Temp.Cmp.Strt.Cool Factr 0 to 60 min TCSTCOOL 0
TCS.H Temp.Cmp.Strt.Heat Factr 0 to 60 min TCSTHEAT 0
SFS.S Fan Fail Shuts Down Unit Yes/No SFS_SHUT No
SFS.M Fan Stat Monitoring Type 0 to 2 SFS_MON 0
VAV.S VAV Unocc.Fan Retry Time 0 to 720 min SAMPMINS 50
50.HZ 50 Hertz Unit ? Yes/No UNIT_HZ No
MAT.S MAT Calc Config 0 to 2 MAT_SEL 1
MAT.R Reset MAT Table Entries? Yes/No MATRESET No
MAT.D MAT Outside Air Default 0 to 100 % MATOADOS 20
ALTI Altitude……..in feet: 0 to 60000 ALTITUDE 0
DLAY Startup Delay Time 0 to 900 sec DELAY 0
AUX.R Auxiliary Relay Config 0 to 3 AUXRELAY 0
SENS INPUT SENSOR CONFIG
SPT.S Space Temp Sensor Enable/Disable SPTSENS Disable
SP.O.S Space Temp Offset Sensor Enable/Disable SPTOSENS Disable
SP.O.R Space Temp Offset Range 1 to 10 SPTO_RNG 5
SRH.S Space Air RH Sensor Enable/Disable SPRHSENS Disable
RRH.S Return Air RH Sensor Enable/Disable RARHSENS Disable
FLT.S Filter Stat.Sw.Enabled ? Enable/Disable FLTS_ENA Disable
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