– 49 –
Hydro Unit
Installation Manual
(10)Setting Night Setback (function code 26.
remote controller function code 0E to 0F)
• Set the function when the Night setback is set to
"ON".
• Set reduction temperature, start time, and end
time.
(12)Hydro 2-Way Diverting valve operation. control
• When using both cooling and heating operations
and there is an indoor unit only for heating (such
as floor heating), install the 2-way valve and set
this function code.
(13)Setting 3way Valve Operation (function code
54)
• This setting is not necessary for normal
installation. Make this setting to invert the logic
circuit in case ports A and B of the 3-way valve
are wrongly attached and it cannot be rectified
on site.
(14)Mixing valve operation setting
• Set the time period from full close to full open of
the 2-zone control mixing valve. Set a value that
is 1/10 of the actual time. And. setting the
interval control time. (minutes)
(15)Setting Heating/Hot Water Switching when
Boiler Is Used (function code 3E)
• When boiler is used, make this setting to operate
the Hydro Unit by the instruction from the boiler.
(16)Setting Heat Pump Operating Time for Hot
Water Supply Operation
• Set the time period from the start of heat pump
run to the start of heater energization at the
beginning of hot water supply operation. If a long
period is set, it takes long time for heating water.
(17)Setting Cooling ON/OFF
• Set this function when performing cooling
operation.
(18)Remote controller time indication
• 24-hour or 12-hour notation is selected for the
timer.
(19)Setting Nighttime Quiet Operation
• Issue an instruction for low-noise mode
operation to the outdoor unit. Enabling/disabling
of this function, start time, and end time can be
set.
(20)Setting Alarm Tone
• The remote controller alarm tone can be set.
(21)Second Remote controller and room
temperature thermostat
• Set the initial temperature setting.
(22)Selection of mode of operation by external
input
• Select the logic of an external input signal
(option)
(23)Hydro Unit Capacity setting
(24)Second Remote controller target temperature
setting
(25)Room temperature sensor setting
(26)Synchronization control at low outside
temperature
(27)P1 pump speed control
(28)Restriction of backup heater energization
during heating mode. (For energy saving)
• When outdoor temperature is higher than the
reference value, the backup heater is forcibly off
during heating mode.
• Default : No restriction
(Same as the conventional control)
(29)Interval operation of the pump during
thermostat off operation (For energy saving)
• The pump of the hydro unit performs intermittent
operation according to the outdoor temperature
during thermostat off (compressor off) operation.
• Default : Continuous operation
(Same as the conventional control)
(30)Backup heater energization control during
defrosting (For energy saving)
• When the heater outlet temperature (THO)
drops 2K below the TSC_F -
β
, the backup
heater (3 kW) is energized. TSC_F is the
assigned temperature with the remote controller.
• Default :
β
= 0 (Same as the conventional
control)
(31)Floor drying
• Please refer to the item of “FIELD SETTING
MENU”
diff: 2K
TSC_F - β
THO
Heater OFF
Heater ON
49-EN
Summary of Contents for HWS-1405XWHM3-E
Page 250: ...EF99812101 2 ...
