Fan Coils - Hitachi YUTAKI RWM-2R1E Installation & Operation Manual

YUTAKI CASCADE CONTROLLER ATW-YCC-03
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Water pump configuration
Overrun Time:
Added operation time of water pump after
Demand OFF.
Minimum OFF Time:
Minimum time of the water pump OFF.
• Only when Economic mode is active (DSW)
Pump Setup:
This option allows user to select hydraulic
configuration 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 configuration is used,
Hitachi mixing kit accessory cannot be
used.

11.13.3.9 Fan coils

302 PMML0575 rev.2 - 03/2022
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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.
Demand OFF Actions:
Configure the Demand OFF action for Heating or Cooling
operation in Room 1 or Room 2.
• Nothing
• Stop fan
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 configuration.
Stop conditions:
• Standard
• Thermo OFF: The water pump stops
after Thermo OFF. (DSW5 pin 4 ON).
• Minimum ON Time:
Minimum time of the water pump ON.
• Only when Economic mode is active
(DSW)