Honeywell EXCEL 5000 User Manual page 145

EXCEL CARE CONTROL ICONS
Internal Parameters
Minimum outdoor air
Output One digital output YD (Excel Web / Excel Web II: Y). This output switches to 1 when
all the following conditions are met:
1. Room temperature minus outdoor air temperature is greater than the
Room/OAT min. differential (value set in the internal parameters dialog box).
2. Room temperature is greater than room temperature setpoint plus room
temperature setpoint shift. The value of the shift must be negative.
3. Outdoor air temperature must be greater than the Minimum OAT (value set in
the internal parameters dialog box).
4. Input XD3 must equal 1 (night cooling is on).
Excel Web / Excel Web II: One analog output Con containing the condition:
One, if TRm minus TOat > parameter "room/OAT min. differential".
Two, if TRm > TSet plus TSft.
Three, if TOat > parameter "minimum OAT".
The following diagram illustrates switching conditions:
147
ALPHABETIC REFERENCE
Excel Web / Excel Web II
74-5577–33 (US)
EN2B-0184 GE51 R0518 (Europe)