Myenergi eddi 16A1P01H, Руководство по установке

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10.7.2 Functional Description
In this application the water is heated by
eddi
with the immersion heater when there is a relativity small
amount of surplus power (e.g. < 1kW). But when there is enough surplus the heat pump is used to heat the
water instead. This configuration takes advantage of the higher efficiency of the heat pump compared with
the immersion heater, whilst ensuring no surplus power is wasted.
For this application the water heating element (4) is wired to the
eddi
Heater 1 output. The water heating timer
control (10) for the heat pump (8) is connected to the Relay 1 normally open contacts of the Relay & Sensor
Board (6).
Most heat pumps require control of the immersion heater in the hot water cylinder, this is to periodically heat
the water to a higher temperature in order to kill any Legionella bacteria that may have built up in the stored
water. Remember it is not permissible to 'back-feed' the
eddi
device; a voltage supply must not be connected
to the heater outputs. Because of this, the heat pump immersion heater relay (9) needs to be connected to the
eSense input of the Relay & Sensor Board (6) instead of the immersion heater element (4). In this application,
the
eddi
is configured to respond to the eSense signal by fully switching on Heater 1 output regardless of
available surplus.
Installation of the temperature probe (7) is optional; the heaters' mechanical thermostat can be used instead
if temperature reading is not required.
10.7.3 Settings Required
Menu Option Settings
Main
Menu
Settings… Display… Icons… Heater 1: Top Immersion
Heater 2: None
Heater Settings Priority… Heater 1
Device
Settings
Advanced Relays &
Sensors
Temperatures… PT1 Set Point: Set
Temperatures as
required if using
temperature
probes
Relay 1… Export On
Threshold:
Should be set to
power
level required for
efficient heap
pump
operation e.g.
1kW
Off
Threshold:
50% of On
Threshold
e.g. 500W
Inc
Diverted:
YES
Min On
Time:
Set this to
reduce
cycling of heat
pump
e.g. 15m
Min Off
Time:
Set this to
reduce
cycling of heat
pump
e.g. 5m
eSense Input… Boost… Heater 1