34
Table 6 -- Menu Structure
a
(cont)
Menu Parameter
Parameter
Default
Value
Parameter
Range and Increment
b
EXPANDED PARAMETER NAME
Notes
CHECKOUT DAMPER VMIN .HS n/a n/a P ositions OA damper to VMIN High Speed position
DAMPER VMAX .HS n/a n/a Positions OA damper to VMAX High Speed position
DAMPER OPEN n/a n/a Positi ons OA damper to the full open pos i ti on.
DAMPER CLOSE n/a n/a Posi t ions damper to the fully closed posi ti on
CONNECT Y1---O n/a n/a C lo se s th e Y1 --- O r el ay ( Y1 --- O)
CONNECT Y2---O n/a n/a C lo se s th e Y2 --- O r el ay ( Y2 --- O)
CONNECT AUX1O n/a n/a Energi z e s the A UX1 O outp ut. I f Aux setting is :
S NONE --- not action taken
S ERV --- 24 Vac out. Turns on or signals an ERV that the
conditions are not good for economizing but are good for
ERV operation.
d
S S Y S --- 2 4 V a c o u t . I s s u e s a s y s t e m a l a r m
ALARMS(_) Ala rm s di s play only when they are active. The menu ti tle “ALA RMS(_)”
includes the number of active alarms in parenthesis ( ).
MA T SENS ERR n/a n/a SUPPLY AI R TEMPER ATURE SENSOR ER R OR
CO2 SENS ERR n/a n/a CO2 SENSOR ERROR
OA T SENS ERR n/a n/a OUTSIDE AIR TEMPERATURE SENSOR ERROR
OAT sensor connected at input terminals OA T
OA SYLK SENS ERR n/a n/a OUTSIDE AIR TEMPERATURE SENSOR ERROR
OAT sensor connected on S --- bus
DA T SENS ERR n/a n/a DISCHARGE AIR TEMPERATURE SENSOR ERROR
SYS ALARM n/a n/a When AUX is set to SYS and there is any alarm (e.g. , failed sensors,
etc.), the A UX terminal has 24 Vac out.
ACT UNDER V n/a n/a ACTUATOR VOLTAGE LOW
Voltag e received at actuator is below expected range
ACT OVER V n/a n/a ACTUATOR VOLTAGE HIGH
Voltag e received at actuator is above expect ed range
ACT STALLED n/a n/a ACTUATOR STALLED
Act uator stopped before reaching commanded posit i on
a
Table 6 illustrates the complete hierarch y. your menu parameters may be different depending on your configuration.
For example if you do not have a DCV (CO
2
) sensor, then none of the DCV parameters appear.
b
When values are displayed, pressing and h ol ding the Y or B button causes the display to automatically increment.
c
n/a = not applicable
d
ERV Operation: When in Cooling mode AND th e conditions are NOT OK f or economizing --- the ERV terminal will be energized.
In the Heating mode the ERV terminal will be energized when the OA is below the ERV OAT setpoint in the setpoint menu.
Menu Notes
1 S T A T U S --- > O C C U P I E D – The factory-standard Occupancy signal originates with a thermostat or other controller call for indoor fan operation at ISC termin-
al G. This signal passes through the Integrated Staging Control Board’s OCCUPIED jumper JMP1 to the ECONO connector a nd to the W7220’s OCC input
terminal. An external timeclock or relay is required to implement an Occupancy schedule on the economizer damper position.
2 STA TUS -> MA TEMP, SETPOINTS -> MAT SET – The W7220 menu parameters and labels include designations MA , MAT and Mixed Air for the econom-
izer cooling control sensor. On these rooftop u nits, the economizer control sensor is located downstream of the evaporator/indoor coil in the supply fan sec-
tion where this sensor is designated as Supply Air Temperature (SAT) sensor.
3 SETPOINTS -> DRYBLB SET – This point is not displayed if a Return Air (differential) temperature sensor or an Outdoor Air enthalpy sensor is connected.
4 SYSTEM SETUP parameters must be configured as noted for 2-Speed unit operation:
EQUIPMENT =CONV
AUX2 I =W
FAN TYPE = 2SPEED
48HC48LC
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