Page 114
Table 64. M3 Control Parameters
Control Parameter
DescriptionUnits
Control Value
No DescriptionUnitsMax.DefaultMin.Parameter Short DescriptionScreen Name
152 AUTO CHGOVR DEADBND
Automatic Changeover
Deadband
2.00 3.00 10.00 °F
Minimum autochangeover dead-band temperature. Dead band
must be greater than or equal to Parameter 142 plus Parameter
143.
Used in room sensor applications.
153 AUTO CHGOVR DELAY Automatic Changeover Delay 1
Check unit parameter
label as default may
be altered at factory
test.
15 Minutes
Autochangeover time delay. Delay between heating and cooling
modes.
154 OCC BLOWER MODE Occupied Blower Mode AUTO-CYCLES Option
Blower control option for room sensor applications during occupied
periods.
Auto Cycle: Blower cycles with demand
On-Continuous 1: blower is on with either the occupancy sensor
or occupancy schedule indicates occupied.
On-Continuous 2: Blower is on only when both the occupancy
sensor and occupancy scheduler indicates occupied.
On-Continuous 3: lower is on only when both the occupancy
sensor and occupancy scheduler indicates occupied. in addition,
blower will be on a minimum of 25% of the time when occupancy
scheduler indicates occupied by the occupancy sensor indicates
not occupied. The 25% minimum is achieved by turning blower on
for 30 minutes and off for 90 minutes.
155 FREECOOL LOCKOUT SP Free Cooling Lockout Setpoint 30.0 30.0 60.0 °F
Locks out free cooling when outdoor temperature is below the set
value.
Setting value to 29°F disables free cooling lockout.
156 FRESH AIR HEAT SP Fresh Air Heating Setpoint 40 40.0 70.0 °F
Fresh Air Heating set point. To enable FAH, set this to a value
between 41°F and 70°F.
157 FAH STAGE DEADBAND
Fresh Air Heating Stage
Deadband
3.0 10.0 15.0 °F Fresh Air Heating stage dead-band.
158 FAH MIN CYCLE TIME
Fresh Air Heating Minimum
Cycle Time
2 8 30 Minutes Fresh Air heating minimum cycle time.
159 FREE COOL SUPPLY SP Free Cooling Supply Setpoint 45.0 55.0 65.0 °F
Economizer modulates dampers to maintain supply air temperature
(RT6) at this set point during free cooling. DACC reset applies. See
Parameter 207 - Parameter 201
160 ECON FREECL TEMP SP
Economizer Free Cooling
Temperature Setpoint
40.0 75.0 75.0 °F
Outdoor Air Temperature is less than parameter setpoint between
41-75°F, or when Outdoor Air temperature is less than Return Air
Temperature between 0-40°F.
161 ECON FRCL TMP OFFSET
Economizer Free Cooling
Temperature Offset
00.0 10.0 40.0 °F Economizer Free Cooling Temperature Offset
162 ECON FREECL ENTH SP
Economizer Free Cooling
Enthalpy Setpoint
10.0 12.0 19.0 mA Economizer Free Cooling Enthalpy Setpoint
163 ECN FRCL ENTH OFFST
Economizer Free Cooling
Enthalpy Offset
1.0 1.0 5.0 mA Economizer Free Cooling Enthalpy Offset
To Next Page
Loading...
Need help?
General
