Heat Link 31360, Руководство пользователя

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HeatLink
®
Mixing Valve Reset Control Stk# 31360
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www.heatlinkgroup.com
General Operation
Exercising
The Stk# 31360 has a built-in exercising function. If the system pump or valve has not been operated at least once every 3 days, the control turns
on the output for a minimum of 10 seconds. This minimizes the possibility of a pump or valve seizing during a long period of inactivity. The
Stk# 31360 ensures that the mixing valve operates over its entire range at least once each exercising period. While the control is exercising, the
Test LED flashes.
Note: The exercising function does not work if power to the control, pump, or valve is disconnected.
Setback (OCC and UNOCC)
To provide greater energy savings, the Stk# 31360 has a setback capability. With setback, the supply water
temperature in the system is reduced when the building is unoccupied. By reducing the supply water
temperature, air temperature in the space may be reduced even when thermostat(s) are not turned down.
Any time the UnO Sw (12) and the Com (13) terminals are shorted together, the control operates in the
unoccupied (Night) mode. When in the unoccupied (Night) mode, the UNOCC segment is displayed in
the LCD. The Stk# 31360 adjusts the supply water temperature based on the UNOCC settings made in the
control. This feature has no effect when the control is used as a setpoint control.
Warm Weather Shut Down (WWSD) OCC & UNOCC
When the outdoor air temperature rises above the Warm Weather Shut Down (WWSD) setting, the control turns on the WWSD segment in the
display. When the control is in WWSD, the Mix Demand pointer is displayed if there is a demand. However, the control does not operate the heating
system to satisfy this demand. If the control is in setpoint mode, the WWSD feature is not functional.
12 13
Timer Switch
UnO
Sw
Com
Floating Action
A 24 V (ac) floating action actuator motor is connected directly to the Stk# 31360 on the R Opn, R Cls and C terminals (9, 10 and 11). The Stk# 31360
pulses the actuator motor open or close to maintain the correct mixed supply water temperature at the mix sensor when there is a mixing demand.
The mixing valve that the actuator is connected to can be either a 2-way, 3-way, or 4-way valve. A visual indication as to whether the control is
currently opening or closing the mixing valve is displayed in the LCD.
Mixing
sensor
Boiler supply sensor
(European Version only)
Boiler
return sensor
or
Boiler Protection (Boil Min)
The Stk# 31360 is capable of providing boiler protection from cold mixing system return
water temperatures. If the boiler sensor temperature is cooler than the BOIL MIN setting
while the boiler is firing, the Stk# 31360 reduces the output to the mixing valve. This
limits the amount of cool return water to the boiler and allows the boiler temperature
to recover. This feature can only be used if a boiler sensor is installed.
Factory Defaults
The control comes preset with several factory defaults. To fine-tune building requirements, these defaults may be changed. If a factory default value
for a terminal unit is changed, the terminal unit number will flash when selected in the ADJUST menu. For the European version, these defaults
are based on the terminal unit selection page 9.
To reload the factory defaults power down the control and wait for 10 seconds. Power up the control while simultaneously holding the Item and
buttons. The terminal unit number should now be displayed constantly in the LCD rather than flashing.