Technical Information
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Energy monitor
End user can monitor accumulated
*1
‘Consumed electrical energy’ and ‘Delivered heat energy’ in each operation mode
*2
on the main
remote controller.
*1 - Monthly and Year to date
*2 - DHW operation
- Space heating
Refer to “5.1.9 Main remote controller” for how to check the energy, and “5.1.1 DIP switch function” for the details on DIP-SW setting.
Either one of the following two method is used for monitoring.
Note: Method 1 should be used as a guide. If a certain accuracy is required, the 2nd method should be used.
1. Calculation internally
Electricity consumption is calculated internally based on the energy consumption of refrigerant and ambient loop, electric heater,
water pump(s) and other auxiliaries.
Delivered heat is calculated internally by multiplying delta T (Flow and Return temp.) and flow rate measured by the factory fitted
sensors.
Set the electric heater capacity and water pump(s) input and specs of additional pump(s) supplied locally. (Refer to the menu tree
in “5.1.9 Main remote controller”)
Immersion
heater
Pump 1
*1
Pump 2
Pump 3
EHWT17D-MHEDW
3 kW
***(factory fitted
pump)
When additional pumps supplied
locally are connected as Pump 2/3,
change setting according to specs of
the pumps.
<Table 3.4>
*1 "***" displayed in the energy monitor setting mode means the factory fitted pump is connected as Pump 1 so that the input is auto-
matically calculated.
When anti-freeze solution (propylene glycol) is used for primary water circuit, set the delivered energy adjustment if necessary.
For further detail of above, refer to “5.1.9 Main remote controller”.
2. Actual measurement by external meter (locally supplied)
FTC has external input terminals for 2 ‘Electric energy meters’ and a ‘Heat meter’.
If two ‘Electric energy meters’ are connected, the 2 recorded values will be combined at the FTC and shown on the main remote
controller.
(e.g. Meter 1 for H/P power line, Meter 2 for heater power line)
Refer to the [Signal inputs] section in “5.1.2 Connecting inputs/outputs” for more information on connectable electric energy meter
and heat meter.
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