Sequence Of Operation; Section A: General Operation - Kanmor 360e Data Brochure

Sequence of Operation

Section A
General
Operation
Page 4 - 5
Section A —General Operation
POWERING UP THE CONTROL
When the Mixing Control 360e is powered up, the control displays the control type number in the LCD for 2 seconds. Next, the
software version is displayed for 2 seconds. Finally, the control enters into the normal operating mode.
OPERATION
The 360e uses a floating action mixing valve to vary the supply water temperature to a hydronic system. The supply water
temperature is based on either the current outdoor temperature, or a fixed setpoint.
Outdoor Reset
When the outdoor design (OUTDR DSGN) setting is not set to OFF, the 360e cal-
culates a mixing supply water temperature based on the outdoor air temperature.
The 360e uses a Characterized Heating Curve and optionally indoor temperature
feedback from an indoor sensor in this calculation.
Setpoint Control
When the outdoor design (OUTDR DSGN) setting is set to OFF, the 360e supplies
a fixed mixing supply temperature equal to the MIX TARGET setting. An outdoor
sensor is not required during this mode of operation.
FLOATING ACTION
A floating action actuator motor is connected to the 360e on the Pwr Mix, Opn, and Cls terminals (9,10 and 11). The 360e
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.
BOILER PROTECTION (BOIL MIN)
The 360e 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
360e 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.
EXERCISING
The 360e 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 360e 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 (UNOCCUPIED)
To provide greater energy savings, the 360e has a setback capability. With set-
back, 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 seg-
ment is displayed in the LCD. The 360e 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.
© 2003 D 360e - 06/03
Section B
Mixing
Reset
Page 5 - 8
Section C
Boiler
Operation
Page 8 - 9
Mix Supply
Sensor
4 of 20
Design Supply Design Supply
Terminal Unit Terminal Unit
Indoor Design Indoor Design Outdoor Design Outdoor Design
Decreasing Outdoor Temperature
Boiler Supply
Sensor
Boiler Return
Sensor
Timer Switch