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Menu 3: Setpoints
Project
Parameter
Value
MAT SET
LOW T LOCK
DRYBLB SET
ENTH CURVE
DCV SET
MIN POS L
MIN POS H
VENTMAX L
VENTMAX H
VENTMIN L
VENTMIN H
ERV OAT SP
EXH1 L SET
EXH1 H SET
EXH2 L SET
EXH2 H SET
Staged Air Volume (SAVt) with Variable
Frequency Drive
The Staged Air Volume (SAV) system utilizes a Variable
Frequency Drive (VFD) to automatically adjust the indoor
fan motor speed in sequence with the unit's ventilation,
cooling and heating operation. Per ASHRAE 90.1- - 2016
during the first stage of cooling operation the SAV system
Parameter
Parameter
Default
Range and Increment
Value
53_F
38 to 65_F;
(12_C)
(3 to 18_C)
increment by 1_
32_F
--- 45 to 80_F
(0_C)
(--- 43 to 27_C)
increment by 1_
63_F
48 to 80_F;
(17_C)
(9 to 27_C)
increment by 1_
ES3
ES1, ES2, ES3, ES4,
or ES5
1100ppm
500 to 2000 ppm;
increment by 100
6.0 V
2 to 10Vdc
4.4 V
2 to 10Vdc
6.0 V
2 to 10Vdc
4.4 V
2 to 10Vdc
3.7 V
2 to 10Vdc
2.8 V
2 to 10Vdc
32_F
0 to 50_F;
(0_C)
(--- 18 to 10_C)
increment by 1_
65%
0 to 100%;
increment by 1
50%
0 to 100%;
increment by 1
80%
0 to 100%;
increment by 1
75%
0 to 100%;
increment by 1
SUPPLY AIR SETPOINT
Setpoint determines where the economizer will modulate the OA
damper to maintain the supply air temperature.
See Menu Note 2 (on page 38).
COMPRESSOR LOW TEMPERATURE LOCKOUT
Setpoint determines outdoor temperature when the mechanical
cooling cannot be turned on.
OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT
Setpoint determines where the economizer will assume outdoor air
temperature is good for free cooling; e.g.: at 63_F (17_C), unit will
economize at 62_F (16.7_C) and below and not economize at 64_F
(17.8_C) and above. There is a 2_F (1.1_C) deadband.
See Menu Note 3 (on page 38).
ENTHALPY CHANGEOVER CURVE
(Requires enthalpy sensor option)
Enthalpy boundary "curves" for economizing using single enthalpy.
DEMAND CONTROLLED VENTILATION SETPOINT
Displays only if CO
sensor is connected. Setpoint for Demand
2
Controlled Ventilation of space. Above the setpoint, the OA dampers
will modulate open to bring in additional OA to maintain a space ppm
level below the setpoint.
VENTILATION MINIMUM POSITION AT LOW SPEED
Displays ONLY if a CO
sensor is NOT connected.
2
VENTILATION MINIMUM POSITION AT HIGH SPEED
Displays ONLY if a CO
sensor is NOT connected.
2
DCV MAXIMUM DAMPER POSITION AT LOW SPEED
(Requires CO
sensor connected)
2
DCV MAXIMUM DAMPER POSITION AT HIGH SPEED
(Requires CO
sensor connected)
2
DCV MINIMUM DAMPER POSITION AT LOW SPEED
(Requires CO
sensor connected)
2
DCV MINIMUM DAMPER POSITION AT HIGH SPEED
(Requires CO
sensor connected)
2
ENERGY RECOVERY VENTILATION UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Only when AUX1 O = ERV
EXHAUST FAN STAGE 1 SETPOINT AT LOW SPEED
Setpoint for OA damper position when exhaust fan1 is powered by the
economizer.
EXHAUST FAN STAGE 1 SETPOINT AT HIGH SPEED
Setpoint for OA damper position when exhaust fan1 is powered by the
economizer.
EXHAUST FAN STAGE 2 SETPOINT AT LOW SPEED
Setpoint for OA damper position when exhaust fan 2 is powered by
the economizer.
Only used when AUX1---O is set to EHX2.
EXHAUST FAN STAGE 2 SETPOINT AT HIGH SPEED
Setpoint for OA damper position when exhaust fan 2 is powered by
the economizer.
Only used when AUX1---O is set to EHX2.
will adjust the fan motor to provide 66% of the design
airflow rate for the unit. When the call for the second
stage of cooling is required, the SAV system will allow
the design airflow rate for the unit established (100%).
During the heating mode, the SAV system will allow total
design airflow rate (100%) operation. During ventilation
mode, the SAV system will operate the fan motor at 66%
speed.
54
Notes
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