heat-timer ETV Platinum Plus, Инструкция по установке и эксплуатации

Страница: 5 / 56

Detailed Operation 5
059305-00 Rev. D Heat-Timer Corp.
ETV Platinum Plus Inputs
System Temperature Sensor
The ETV Platinum Plus is designed to connect to the provided Heat-Timer temperature
sensor probe with enclosure (p/n 904222-00).
The sensor must be installed within 1 to 3 feet (0.3 to 0.9meters) after the mixed outlet of
the motorized mixing valve, and before any takeoffs.
Aux Sensor/Switch Inputs - optional
Auxiliary inputs connected to the ETV Platinum Plus can configured as temperature sensors or switch sensors.
When configured as a switch sensor, the ETV Platinum Plus detects an open or close switch contact.
When configured as a temperature sensor, the sensor monitors water temperature. When placed in
the COLD and HOT inlet of the valve, the sensor can be configured as Feed-Forward to provide an
additional feedback to the control for maintaining the accuracy of the desired setpoint temperature.
Auxiliary temperature sensors must be installed at least
3 to 6 feet ( 1.0 to 1.8 meters) from the valve,
and after the cold and return lines join together. When using the Feed-Forward feature it is
recommended to install the Auxiliary Temperature Sensors at least 6 feet (1.8 meters) from the valve.
NOTE:
Alarms for auxiliary sensors are available with RINET communication option only and is accessed
via internet through BuildingNet.
Flow Prove - optional
The Flow Prove input checks for the flow status before opening the mixing valve. If no flow status exists,
the control will keep the mixing valve closed (fully COLD). However, if the no flow status occurs during
normal valve operation, the ETV Platinum Plus will keep the mixing valve position at its latest opening
percent or return the mixing valve to a predetermine position as set by the installer.
NOTE
: If the current valve position is lower than the preset valve position setting, the valve will remain
at the current position.
NOTE
: IT is the responsibility of the installer to properly select the flow switch and the gpm flow rate
required for the switching needed for the application.
4-20mA Remote Setpoint - optional
The 4-20mA remote setpoint can be used when it is desirable to set the ETV Platinum Plus setpoint
remotely using an EMS system. Any signal that is less than 2mA or greater than 22mA will close the mixing
valve and trigger an alarm (see “Alarm Messages” on page
35
).
NOTE: The ETV Platinum Plus does not source power to the 4-20mA terminals. The EMS system must
provide the excitation voltage.