Introduction; Passwords - Daikin MICROTECH DPSA Operation Manual

INTRODUCTION

Introduction
This manual provides information on the operation of MicroTech
unit controller for systems ordered with Refrigeration Only
Controls (ROC). It will assist the installer to understand which
inputs and outputs are available to the field controller to control
the unit.
The MicroTech unit controller with Refrigeration Only Controls is
not capable of complete stand-alone operation of the packaged
rooftop unit. The Refrigeration Only Control system requires
analog inputs from a field installed controller to perform the
desired sequence of operations. The field installed controller
is responsible for proper control of the dampers to ensure
unobstructed airflow.
The field installed controls will provide one or more analog inputs
(user selectable 0 – 10 Vdc or 4-20 mA) to the MicroTech Unit
Controller. Based on these analog inputs, the MicroTech Unit
Controller will respond to meet the requested output for: cooling
capacity, heating capacity, reheat capacity, return fan speed, and
supply fan speed for DPSA models.
CAUTION
The third-party controller must provide sequences to operate the equipment
during cold weather events to prevent damage to hot water or steam heating
coils.
CAUTION
When sending command signal to the supply fan array, the third-party controller
must fully open the outside air dampers to provide unobstructed airflow. This
caution only applies to DOAS units without a return air path.
The user can display and modify information in the MicroTech unit
controller using the controller's keypad and display. Refrigerant
pressures, subcooling, and superheat can be checked with the
MicroTech unit controller. Refrigerant pressure gages are not
required when performing start-up of DPSA systems. Schrader
fittings are for evaluation and charging purposes only except if
there is a problem that would require confirmation of transducer
readings .
OM 1401

Passwords

Various menu functions are made accessible based on the
access level of the user. There are four access levels: Level 2,
Level 4, Level 6, and no password. Level 2 has access to the
most menu functions. Before entering a password, the user has
access to basic status menu items.
The main password page is displayed when the keypad/display
is first accessed, the Home Key is pressed, the Back Key is
pressed multiple times, or if the keypad/display has been idle
longer than the Password Timeout period (default 10 minutes).
The main password page provides access to enter a password.
• A user can access the Quick Menu, view the current Unit
State, access and acknowledge alarms in the alarm lists,
and view information about the unit with no password.
• Entering the Level 6 password (5321) allows access to
the Alarm Lists Menu, Quick Menu, and the View/Set Unit
Menus group.
• Entering the Level 4 password (2526) provides access
to Level 6 items and the Commission Unit Menu, Manual
Control, and Service Menu groups.
• Entering the Level 2 password (6363) provides access to
Level 4 items and the Unit Configuration Menu.
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