IM 926-3 • ROOFPAK APPLIED SYSTEMS 106 www.DaikinApplied.com
Check, Test, and Start Procedures
Final Control Settings
When all start-up procedures are completed, set the controls
and program the MicroTech III controller for normal operation.
Use the following list as a guide; some items may not apply to
your unit. For more detail, see
1.
Turn system switch S1 to ON and S7 to AUTO.
2.
Turn gas furnace switch S3 to AUTO or turn electric heat
switch HS1 to ON.
3.
Set the electromechanical (Honeywell H205) enthalpy
control (OAE) as required (A, B, C, or D). Set the solid-
state (Honeywell H705/C7400) enthalpy control (OAE/
RAE) past “D.”
4.
Set the heating and cooling parameters as required for
normal unit operation:
a.
Temperature \ Zone Cooling \
b.
Temperature \ Zone Heating \
c.
Temperature \ Discharge Cooling \
d.
Temperature \ Discharge Heating \
5. Set the low ambient compressor lockout setpoint as
required in menu,
Temperature \ Zone Cooling \ OAT Clg
Lock=
. Do not set it below 50°F (10°C) unless the unit is
equipped for low ambient operation.
6. Set the high ambient heat lockout temperature setpoint,
Temperature \ Zone Heating \ OAT Htg Lock=
as required.
7. Set the alarm limits as required in
Setup/Service \ Alarm
Limits \
.
8.
Set the compressor lead/lag function as desired using
keypad menu
Setup/Service \ Compressor Setup \ Lead
Circuit=
and
Setup/Service \ Compressor Setup \ Comp Ctrl=
.
Refer to “Compressor Staging” in
NOTE:
If the unit has hot gas bypass on circuit #1 only, lead
circuit must always be #1.
9. Set the duct static pressure control parameters as
required in keypad menu
Airflow \ Duct Pressure \
.
10. Set the building static pressure control parameters as
required in keypad menu
Airflow \ Bldg Pressure \
.
11.
Set the fan tracking parameters as required in keypad
menus
Setup/Service \ Fan Tracking Setup \
and
Setup/
Service \ Fan Balance \
.
12. Set the economizer control parameters as required in
keypad menu
Temperature \ OA Damper \
.
13.
Set the control timers as required in keypad menu
Setup/
Service \ Timer Settings \
.
14.
Set the date and time in keypad menu
Setup/Service \
Time/Date \
.
15.
Set the operating schedule as required using keypad
menus. Note: When used with a Building Automation
System, these settings may need to be kept at the
default of no schedule:
a.
Schedules \ Daily Schedule \
b.
Schedules \ Holiday Schedule \
16.
Temporarily disconnect static pressure sensor tubing
from sensors SPS1 and SPS2 (if installed) and place the
unit into the calibrate mode by using the keypad menu
Setup/Service \ Unit Configuration \ Calibrate Mode=
and
changing the value from NO to YES. The calibrate mode
automatically zeroes all static pressure sensors and
calibrates any actuator feedback pots connected to the
MicroTech III controller. When the calibration is finished,
the keypad menu
System Summary \ System \ Unit Status=
changes from “Calib” to “Off Man.”
17. To restart the unit, reconnect static pressure tubing and
change keypad menu
System Summary \ System \ Ctrl
Mode=
from OFF to AUTO.
Maintaining Control Parameter
Records
Daikin recommends that the MicroTech III controller’s setpoints
and parameters be recorded and saved for future reference. If
the Microprocessor Control Board requires replacement, this
record facilitates entering the unit’s proper data. The following
tables display all the setpoints, monitoring points, and program
variables offered by MicroTech III plus the keypad road map
used to find each parameter.
A number of menus and menu items that appear on the unit
keypad/display are conditional and may not apply to a specific
unit, depending on the unit software configuration. The unit
software configuration is defined by a “Software Configuration
Code” shown on a label located near the keypad/display. The
Software Configuration Code also can be displayed via the
six menu items in the Config Code menu on the unit keypad/
display. Refer to “Main Control Board (MCB) Configuration” in
The shaded menus and menu items in
are conditional. A conditional menu or menu item includes
a reference in
to the position in the Software
Configuration Code upon which its applicability depends.
For example, the Duct Pressure menu in
a notation [14=1 or 2]. This notation means that the Duct
Pressure menu (and all its menu items) applies to the specific
unit only if position 14 in its Software Configuration Code is a 1
or a 2. Otherwise, the menu or menu item is not applicable to
the unit and does not affect its operation.
The items in
include the factory-set value for all
adjustable items. Keep a record of any changes made to any
of these items.
Summary of Contents for RoofPak RCS Series
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