48
Menu 3: Setpoints
Parameter
Project
Value
Parameter
Default
Value
Parameter
Range and Increment
Notes
MAT SET 53_F
(12_C)
38 to 65_F;
(3 to 18_C)
increment by 1_
SUPPL Y AIR SETPOINT
Setpoint determines where the economizer will modulate the OA
damper to maintain the supply air temperature.
SeeMenuNote2(onpage33).
LOW T LOCK 32_F
(0_C)
---45 to 80_F
(--- 43 to 27_C)
increment by 1_
COMPRESSOR LOW TEMPERA TU RE LOCKOU T
Setpoint determines outdoor temperature when the mechanical
coo l ing cannot be turned on.
DRYBLB SET 63_F
(17_C)
48 to 80_F;
(9 to 27_C)
increment by 1_
OA DRY BULB TEMPERATU R E CHANGEOVER SE T POINT
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.
SeeMenuNote3(onpage33).
ENTH CURVE ES3 ES1, ES2, ES3, ES4,
or ES5
ENTHALPY CHANGEOVER CURVE
(Requi res enthal py senso r opti on)
Enthal py boundary “curves ” for econo mi zi ng using si ngl e enthal py.
DCV SET 1100ppm 500 to 2000 ppm;
increment by 100
DEM AND CONTROLLED VENTILA TI ON SETPOINT
Displays only if CO
2
sens o r is connec te d. Set poi nt for Demand
Controlled Ventilation of space. Above the setpoint, the OA dampers
wi l l modulate open to bring in addit ional OA to main t ain a spac e ppm
level below the setpoint.
MIN POS L 6.0 V 2 to 10Vdc VENTILATION MINIMUM POSITION AT LOW SPEED
Displays ONL Y if a CO
2
sens o r is NOT conne c te d.
MIN POS H 4.4 V 2 to 10Vdc VENTILATION MINIMUM POSITION AT HIGH SPEED
Displays ONL Y if a CO
2
sens o r is NOT conne c te d.
VENTMAX L 6.0 V 2 to 10Vdc DCV MAXIMUM DAMPER POSITION AT LOW SPEED
(Requires CO
2
sens o r connec t ed)
VENTMAX H 4.4 V 2 to 10Vdc DCV MAXIMUM DAMPER POSITION AT HIGH SPEED
(Requires CO
2
sens o r connec t ed)
VENTMIN L 3.7 V 2 to 10Vdc DCV MINIM UM DAMPER POSITION AT LOW SPEED
(Requires CO
2
sens o r connec t ed)
VENTMIN H 2.8 V 2 to 10Vdc DCV MINIMUM DAMPER POSITION A T HIGH SPEED
(Requires CO
2
sens o r connec t ed)
ERV OAT SP 32_F
(0_C)
0to50_F;
(--- 18 to 10_C)
increment by 1_
ENERGY RECOVERY VENTILATI ON UNIT OUTDOOR AIR
TEMPERATURE SETPOINT
Onl y whe n AUX1 O = ERV
EXH1 L SET 65% 0 to 100%;
increment by 1
EXHAU ST FAN STAGE 1 SETPOINT AT LOW SPEED
Set poi nt for OA damper posit i on when exhaust fan1 is powere d by the
economizer .
EXH1 H SET 50% 0 to 100%;
increment by 1
EXHAUST FAN STAGE 1 SETPOINT AT HIGH SPEED
Set poi nt for OA damper posit i on when exhaust fan1 is powere d by the
economizer .
EXH2 L SET 80% 0 to 100%;
increment by 1
EXHAU ST FAN STAGE 2 SETPOINT AT LOW SPEED
SetpointforOAdamperpositionwhenexhaustfan2ispoweredby
the economizer .
Only used when AUX1---O is set to EHX2.
EXH2 H SET 75% 0 to 100%;
increment by 1
EXHAUST FAN STAGE 2 SETPOINT AT HIGH SPEED
SetpointforOAdamperpositionwhenexhaustfan2ispoweredby
the economizer .
Only used when AUX1---O is set to EHX2.
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 t he first stage of cooling opera tion the SAV system
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.
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