Anti-Cycling; Control Modes - Lochinvar ECOKNIGHT EKW46CE Installation Manual

21.4.2
TANK SET POINT DIFFERENTIAL
When a tank sensor is installed, the tank temperature must drop this amount below the tank set point (DHW Tank Set point
parameter) before the water heater turns back on. The installer can adjust this setting by accessing the Tank Set point Differential
parameter. The minimum setting is 0°C, and the maximum is 22°C. The default setting is 3°C.
21.4.3
DHW RECIRCULATION PUMP OFFSET (RECIRCULATION PUMP)
The SMART SYSTEM control will turn the DHW recirculation pump on when the DHW return water temperature drops below the
DHW Tank Set Point minus the DHW Recirculation Pump Offset. The range for this parameter is 0° to 30°C. The default value is
5°C.
21.4.4
DHW RECIRCULATION PUMP DIFFERENTIAL
Once the SMART SYSTEM control turns the DHW recirculation pump on, the DHW return water temperature must increase by the
DHW Recirculation Pump Differential before the control turns the DHW recirculation pump back off. The range of this parameter is
0° to 50°C. The default value is 2°C.
21.4.5
TANK MINIMUM SET POINT
This setting controls the minimum tank set point for the tank temperature. The installer can adjust this by accessing the Tank
Minimum Set point parameter. The minimum setting is16°C and the maximum setting is the maximum tank set point (Tank
Maximum Set point parameter). The default value is 16°C.
21.4.6
TANK MAXIMUM SET POINT
This setting controls the maximum tank set point for the tank temperature. The installer can adjust this by accessing the Tank
Maximum Set point parameter. The minimum setting is the minimum tank set point (Tank Minimum Set point parameter) and the
maximum setting is 88°C. The default value is 88°C.
21.5

ANTI-CYCLING

21.5.1
ANTI-CYCLING TIME
Once the burner turns off, a set amount of time must elapse before the control will respond to a new demand. The control will
block the new heat demand and anti-cycling will be shown in the display until the time has elapsed or the water temperature drops
below the Anti-Cycling Override Differential parameter. This parameter can be changed by the installer by accessing the Anti-
Cycling Time parameter. The time range for this parameter is 1 minute to 10 minutes. The default value is 1 minute.
21.5.2
ANTI-CYCLING OVERRIDE DIFFERENTIAL
The control will bypass the anti-cycling time if the inlet water temperature drops too much. The control will use the inlet water
temperature present at the water heater when it shuts off as the starting point. If the inlet temperature drops below the
temperature parameter, the control will abort anti-cycling and allow the water heater to fire. This parameter can be changed by
the installer by accessing the Anti-Cycling Override Differential parameter. The temperature range of this parameter is 0°C to
30°C. The default value is 6°C.
21.6

CONTROL MODES

21.6.1
CONTROLLING SENSOR
The controlling sensor parameter selects the sensor the control will use to regulate the water heater firing rate. This parameter is
adjustable by the installer by accessing the Controlling Sensor parameter. The sensor selections are as follows: The outlet sensor
regulates the firing rate based on the outlet water temperature of the water heater and the inlet sensor regulates the firing rate
based on the inlet water temperature of the water heater. If the outlet sensor is selected, and the optional system supply sensor is
connected, the control will regulate the firing rate based on the system supply sensor temperature. The default sensor is the
Outlet Sensor.
21.6.2
CASCADE ADDRESS
The water heater designated as the Leader needs to be programmed with address 0. All the Member water heaters require
addresses from 1 to 7, and the addresses must be different for each Member. The addresses can be in any order, regardless of
the order in which the units are wired together. This parameter is adjustable by the installer by accessing the Cascade Address
Parameter The default address is 1.
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