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Hitachi YUTAKI S80 Serie Manual De Instalación Y Funcionamiento página 72

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Power Meter (Default for input 7)
This function is used to monitor real consumption of the system by means an external power
meter device connected at this input. The calculation method is done by measuring real
consumption of the whole installation with one power meter device or 2 separate power meter
(one for indoor unit and another one for outdoor unit.
Common
Line
  
Aquastat for circuit 1
Aquastat is a security accessory to control in order to prevent high water temperature entering
into floor system (Circuit 1). This devices must be connected to terminals 22 & 23 for circuit 1.
When this devices is activated because of the high temperature of the water, it stops the water
pump in order to stop the flow of water to the heating floor.

NOTE
For R410A models terminals 28 & 29 for circuit 2 are available.
PMEN0648 rev.0 - 03/2023
16
22
C
21
23
1
Second Aquastat
Circuit 1 (for WP)
Power M.
input 7
6
63

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