General Information
8
PKG-SVP01E-EN
PURGE with duct pressure control “E”
This sequence can be used when supply air control is
required for smoke control.
•
Supply fan – on
•
Supply fan VFD – on (if equipped)
•
Inlet guide vanes – controlled by supply air pressure
control function with supply air pressure high limit
disabled
•
Outside air dampers – open
•
Heat – all stages – off, hydronic heat output at 0 vdc
•
Occupied/unoccupied output – energized
•
VO relay – energized
•
Exhaust fan (field-installed) - on
•
Exhaust damper (field-installed) - open
Note:
Each system (cooling, exhaust, supply air, etc.)
within the unit can be redefined in the field for each
of the five sequences, if required. Also the
definitions of any or all of the five sequences may
be locked into the software by using the human
interface panel keypad. Once locked into the
software, the sequences cannot be changed.
Programming the Unit
The UCM must be programmed with “job-specific”setup
information for the unit to operate and function properly.
The data necessary for unit operation will vary depending
on factors such as unit size, type, and options.
This manual provides step by step instructions for
programming setup information using the HI or RHI. It also
includes instructions for checking unit operating status,
accessing and clearing diagnostics, and performing
service tests. Some of the displays in this manual may not
appear on the HI or RHI screen during programming. Only
applicable screens for specific unit options and operating
parameters will display.
Any steps that do not apply to all unit types are marked
accordingly. Ignore any steps that do not apply to your unit
and/or application. Continue this process until all
applicable screens are programmed with the required
information.
Menu Keys
Any references in this section to the HI applies to both the
HI and RHI, with the exception of the SERVICE MODE key.
See
for an illustration of the six menu keys. The
menu keys are: STATUS, SETPOINTS, SETUP,
CONFIGURATION, DIAGNOSTICS, and SERVICE MODE.
These keys allow access to various interactive menus so
the user can input and access unit operating data. Pressing
these keys will display the initial menu screen designated
by the key’s name. The following information describes
each key and its function.
STATUS Key
Pressing the STATUS key causes the LCD to display the
operating status screen; i.e. “On”, “Unit Stop”, “External
Stop”, “Emergency Stop”, “Service Mode”. Pressing the
NEXT key allows the operator to scroll through the screens
which provide information such as air and refrigerant
temperatures, humidity levels, fan operation, compressor
operation, heater operation, economizer positioning,
exhaust operation, as well as heating, cooling, and
compressor lockout SETPOINTs. Pressing the STATUS key
while viewing any of the data screens will cause the LCD
to go back to the operating status screen.
SETPOINTS Key
Pressing the SETPOINTS key will cause the LCD screen to
display the first of the SETPOINT screens where the
operator will designate default temperature and pressure
SETPOINTs. While scrolling through the SETPOINT
screens, pressing this key again will cause the LCD to
display the first SETPOINT screen.
Figure 1.
Human interface module
