059305–00 REV. E
HEAT-TIMER CORP.
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7
ETV PLATINUM PLUS OUTPUTS
ACTUATORS
When the Control Mode is set to ETV or ETV + HTLV, the control operates a single or dual motorized mixing valve to maintain the hot
water temperature at the Setpoint. This is done by sending 24Vac power and a modulation signal to the mixing valve.
During loss of power the actuator will automatically position itself and the valve to a full COLD position. Once power is restore the
actuator will return to normal operation.
HTLV (HIGH TEMP LIMIT VALVE)
When the Control Mode is set to HTLV or ETV + HTLV, the ETV Platinum Plus uses a HTLV (High Temp Limit Valve) to close the hot
water feed to the mixing valve when excessive mixed temperatures exceed the Alarm Limit (See “HTLV Setpoint” on page 49) for the
specified Delay Alarm period.
The control can manage either a motorized valve (powered OPEN and powered CLOSED) or a Normally Open (N.O.) or Normally
Closed (N.C.) solenoid type valve. Heat-Timer recommends the use of a motorized ball valve with battery backup HTLV valve for better
performance during power outages.
HTLV LOCKOUT OUTPUT
The HTLV Lockout can be used to provide a notification that the unit has gone into lockout. Devices that can be connected to the ETV
Platinum Plus include: Vis-U-Alarm, audible alarm, Remote Management System, or any other device that requires a switch closure or an
open switch to trigger an alarm.
The HTLV Lockout LED will be lit whenever the control is in lockout. To exit HTLV Lockout mode, the cause of the alarm must end or be
corrected, the System Sensor reading must drop below the HTLV Limit, and the Reset button must be pressed (See “Reset Lockout” on
page 54).
02 DETAILED OPERATION
NOTE
The ETV Platinum Plus does not source power to the HTLV valve terminals. An external power source is required.
NOTE
The ETV Platinum Plus does not source power to the HTLV Lockout terminals. An external power source is required.
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