Hitachi YUTAKI RWM-2R1E User Manual

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Water pump conguration
Minimum OFF Time:
Minimum time of the water pump OFF.
• Only when Economic mode is active (DSW)
• Minimum ON Time:
Minimum time of the water pump ON.
• Only when Economic mode is active
(DSW)
Pumps during DHW:
This option allows to stop Water Pumps
during DHW operation. Water pumps that
are allowed to stop are the ones that are
not directly involved to DHW heating-up
procedure. This is WP2 and WP3 depending
on the hydraulic conguration.
Overrun Time:
Added operation time of water pump after
Demand OFF.
Stop conditions:
• Standard
• Thermo OFF: The water pump stops
after Thermo OFF. (DSW5 pin 4 ON).
Pump Setup:
This option allows user to select hydraulic
conguration of the system.
• Standard: WP2 is connected after WP3 by
means an hydraulic separator or directly
by means Hitachi mixing kit accessory.
Whenever WP2 is switched ON, WP3 is
also switched ON in order to transfer heat
to C2
• Parallel: WP2 is directly connected to the
buffer tank in parallel with WP3. Operation
of WP3 is independent of the operation
of WP2. When this conguration is used,
Hitachi mixing kit accessory cannot be
used.
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11.13.3.9 Fan coils
Demand OFF Actions:
Congure the Demand OFF action for Heating or Cooling
operation in Room 1 or Room 2.
• Nothing
• Stop fan
Controlled fan zones:
Fan coil usage assignation in function of Mode and Room.
• Deactivated
• Heating
• Cooling
• Heating & Cooling
Delay ON time:
Delay time to start Fan operation for Fan 1 or Fan 2 only in
heating operation. Purpose of this control is to make sure water
temperature at fan coil is hot enough before fan is started in order
to ensure user comfort.
YUTAKI CASCADE CONTROLLER ATW-YCC-03
PMML0575 rev.2 - 03/2022
302

Hitachi YUTAKI RWM-2R1E Specifications

General

Brand	Hitachi
Model	YUTAKI RWM-2R1E
Category	Air Conditioner
Language	English