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MENU
PARAMETER
MAT SET
LOW T LOCK
DRYBLB SET
DRYBLB DIFF
ENTH CURVE
DCV SET
MIN POS
MIN POS L
MIN POS M
MIN POS H
VENTMAX L
SETPOINTS
VENTMAX M
VENTMAX H
VENTMIN L
VENTMIN M
VENTMIN H
ERV OAT SP
††
EXH1 SET
EXH1 L SET
EXH1 M SET
EXH1 H SET
EXH2 L SET
EXH2 M SET
EXH2 H SET
Table 11 — W7220 Menu Structure*(cont)
PARAMETER
PARAMETER
DEFAULT
RANGE AND
VALUE
INCREMENT
53°F
38 to 70°F;
increment by 1
32°F
-45 to 80°F
increment by 1
63°F
48 to 80° F
increment by 1
0°F
0 to 6°F
Increment by 2
ES3
ES1,ES2,ES3,ES4,
or ES5
1100ppm
500 to 2000 ppm;
increment by 100
4.4 V
2 to 10 Vdc
6.0 V
2 to 10 Vdc
5.4 V
2 to 10 Vdc
4.4 V
2 to 10 Vdc
6.0V
2 to 10 Vdc
5.4 V
2 to 10 Vdc
4.4 V
2 to 10 Vdc
3.7 V
2 to 10 Vdc
3.4 V
2 to 10 Vdc
2.8 V
2 to 10 Vdc
32°F
0 to 50°F
increment by 1
50%
0 to 100%
65%
0 to 100%
60%
0 to 100%
50%
0 to 100%
80%
0 to 100%
77%
0 to 100%
75%
0 to 100%
32
†
MIXED AIR SETPOINT Setpoint determines where the economizer will mod-
ulate the OA damper to maintain the mixed air temperature.
COMPRESSOR LOW TEMPERATURE LOCKOUT
Setpoint determines outdoor temperature when the mechanical cooling
cannot be turned on. Commonly referred to as the Compressor lockout.
OA DRY BULB TEMPERATURE CHANGEOVER SETPOINT
Setpoint determines where the economizer will assume outdoor air tempera-
ture is good for free cooling; e.g.; at 63°F unit will economize at 62°F and
below and not economize at 64°F and above. There is a 2°F deadband.
DRYBULB SET is only displayed if the economizer has a single dry bulb
sensor.
Drybulb Differential will only show if using dual drybulb - i.e. when an outdoor
air temperature sensor C7250 is attached to OAT terminals and C7400S
sensor is wired to S-Bus and configured for RAT (return air). Free cooling will
be assumed whenever OA temp is at or below RAT minus this drybulb
setting.
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 Controlled
2
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. Only displayed if controller is set for
single speed unit under FAN TYPE, and if DCV is NOT used.
VENTILATION MINIMUM POSITION AT LOW SPEED. Only displays if unit
is set for 2 or 3 speed and CO
1 cool then set for HEATING ventilation. If using 3 speed with 1 heat and 2
cool then set for LOW SPEED COOLING ventilation.
VENTILATION MINIMUM POSITION AT MEDIUM SPEED. Only displays if
unit is set for 3 speed with 1 heat and 2 cool, and CO
HEATING ventilation.
VENTILATION MINIMUM POSITION AT HIGH SPEED. Only displays if unit
is set for 2 or 3 speed and CO
1 cool then set for COOLING ventilation. If using 3 speed with 1 heat and 2
cool then set for HIGH SPEED COOLING ventilation
DCV MAXIMUM DAMPER POSITION AT LOW SPEED. Only displays if unit
is set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1
heat and 1 cool then set for HEATING ventilation. If using 3 speed with 1
heat and 2 cool then set for LOW SPEED COOLING
DCV MAXIMUM DAMPER POSITION AT MEDIUM SPEED. Only displays if
unit is set for 3 speed with 1 heat and 2 cool. Set for HEATING ventilation.
DCV MAXIMUM DAMPER POSITION AT HIGH SPEED. Only displays if unit
is set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1
heat and 1 cool then set for COOLING ventilation. If using 3 speed with 1
heat and 2 cool then set for HIGH SPEED COOLING ventilation
DCV MINIMUM DAMPER POSITION AT LOW SPEED. Only displays if unit
is set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1
heat and 1 cool then set for HEATING ventilation. If using 3 speed with 1
heat and 2 cool then set for LOW SPEED COOLING
DCV MINIMUM DAMPER POSITION AT MEDIUM SPEED. Only displays if
unit is set for 3 speed with 1 heat and 2 cool. Set for HEATING ventilation.
DCV MINIMUM DAMPER POSITION AT HIGH SPEED. Only displays if unit
is set for 2 speed or 3 speed with 1 heat and 2 cool. IF using 2 speed with 1
heat and 1 cool then set for COOLING ventilation. If using 3 speed with 1
heat and 2 cool then set for HIGH SPEED COOLING ventilation
ENERGY RECOVERY VENTILATOR UNIT OUTDOOR AIR TEMPERA-
TURE SETPOINT
Only displayed when AUX1 O = ERV
Exhaust fan set point for single speed units. Based on OA Damper position
to activate power exhaust.
EXHAUST FAN 1 SETPOINT AT LOW SPEED on 2 speed or 3 speed with 1
heat and 2 cool. Based on economizer OA damper position to activate power
exhaust.
EXHAUST POINT 1 SETPOINT AT MEDIUM SPEED. Only displays if unit is
set for 3 speed with 1 heat and 2 cool. Based on economizer OA damper
position to activate power exhaust.
EXHAUST FAN 1 SETPOINT AT HIGH SPEED on 2 speed or 3 speed with
1 heat and 2 cool. Based on economizer OA damper position to activate
power exhaust.
EXHAUST FAN 2 SETPOINT AT LOW SPEED on 2 speed or 3 speed with 1
heat and 2 cool. Based on economizer OA damper position to activate power
exhaust.
EXHAUST FAN 2 SETPOINT AT MEDIUM SPEED. Only displays if unit is
set for 3 speed with 1 heat and 2 cool. Based on economizer OA damper
position to activate power exhaust.
EXHAUST FAN 2 SETPOINT AT HIGH SPEED on 2 speed or 3 speed with
1 heat and 2 cool. Based on economizer OA damper position to activate
power exhaust.
NOTES
is not used. If using 2 speed with 1 heat and
2
is not used. Set for
2
is not used. IF using 2 speed with 1 heat and
2
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