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Operating Procedures
to the primary controller. The primary controller monitors
the performance of the heat pump, activating and
deactivating modules as needed to maintain the leaving
water temperature for the heat pump.
Figure 7. Typical controller network
Figure 8. Carel medium c.pCO primary controller
Operating the Microprocessor
The touchscreen interface panel is ready to use when it is
connected to the Ethernet switch and heat pump power is
ON.
Upon initial startup, the status line will indicate that the heat
pump is OFF. Press and hold the ON/OFF button on the
touchscreen interface panel; for few seconds to turn the
heat pumpON . The status line on the LCD screen of the
primary module will indicate that it is powered.
Press and hold ON-OFF button to toggle the heat pump
ON and OFF.
Microprocessor Functions
For practical purposes, all essential control information and
operator actions are read and responded to using the
touchscreen interface panel. The touchscreen interface
panel is connected to the primary microprocessor controller
and is the only way to access many primary controller
functions.
22
(See the following figure for a simplified example of a
typical microprocessor controller network.)
NOTICE
Component Damage!
Failure to follow instructions could damage sensitive
electronic components beyond repair.
To prevent arcing or surges of electrical current, do
not use wires or cables to jump components or
bypass the manufacturer's safety systems.
Password Protection
There are three levels of access to the functions displayed
on the interface. The basic level, 'user,' does not require a
password. The higher access levels are the technician
('tech') and administrator ('admin') levels that can only be
accessed by Trane technical personnel. Contact Trane
technical support regarding the possibility of any potential
issues involving the higher-level functions.
Operator Control
A touchscreen interface panel is the primary means for the
operator or maintainer to monitor and modify a host of
functions involving temperatures, pressures, set points
alarms, operating schedules, and elapsed operating hours.
This touchscreen interface panel can be located within
proximity of the primary microprocessor controller. It is
typically located in the primary module.
The touchscreen interface is connected to and
communicates with all module controllers via the Ethernet
switch. It accesses overall heat pump functions and
settings as well as individual module settings.
In this manual, all functions, procedures, checklists, system
information, and changes in system parameters (set points,
alarms, primary heat pump controls, and so forth) are
written assuming the operator is using the touchscreen
interface panel.
When connected to the Ethernet switch, the touchscreen
interface panel displays current, real-time, information
ARTC-SVX006A-EN
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