Toshiba HWS-803XWHM3-E Service Manual page 46

Item
8-1. 2) Hot water supply operation
Basic
Operation
[HOT WATER]
button set to "ON"
Hydro unit
Operation instruction
signal transmit
Outdoor unit
3) Heating operation
button set to "ON"
Hydro unit
Operation instruction
signal transmit
Outdoor unit
Operation flow and applicable data, etc.
Hot water temperature: 40°C to 75°C
Circulation pump "ON/OFF" control
Water 3-way valve control
control
Hot water cylinder heater control
Number of compressor revolutions control
Number of outdoor fan motor revolutions control
control Pulse motor valve control
4-way valve control
ZONE1, 2
Heating temperature: 20°C to 55°C
Circulation pump "ON/OFF" control
Water 3-way valve control
Water 2-way valve control
control
Mixing Valve control
Backup heater control
Booster heater control
Number of compressor revolutions control
Number of outdoor fan motor revolutions control
Pulse motor valve control
control
4-way valve control
Set temperature
(TSC_F)
[ °C ]
A(40)
B(35)
C(30)
D(25)
E(20)
-20
A, B, C, D, E Setting available range 20 to 55°C
T1 Setting available range
T3 Setting available range
T1 0 T3 20
-15 to 0°C
0 to +15°C
45
Operation description
Hot water supply operation
1. Purpose
Hot water supply
2. Details
This section performs
hot water supply
operation according to
heating conditions
specified for the steps
on the left.
3. Operations
1) Set the [HOT WATER]
remote controller
button to "ON".
2) The hydro unit
controller starts to
transmit a hot water
supply operation signal
to the outdoor unit
control unit.
3) The hydro unit
performs the operation
controls shown on the
left while also
controlling the
circulation pump, hot
water cylinder heater
"3WV".
4) The outdoor unit
controls the
compressor, outdoor
fan motor, electric
expansion valve, and
4-way valve based on
the operation signals
transmitted by the
hydro unit.
Heating operation
1. Purpose
Heating
2. Details
This section performs
heating operation
according to heating
conditions specified for
the steps on the left.
3. Operations
1) Set the [ZONE1, 2]
remote controller
button to "ON".
2) The hydro unit
controller starts to
transmit a heating
operation signal to the
outdoor control unit.
3) The hydro unit
performs the operation
controls shown on the
left while also
controlling the
circulation pump,
backup booster heater
"ON/OFF", water 2-
way valve, and water 3-
way valve.
4) The outdoor unit
controls the
compressor, outdoor
fan motor, electric
expansion valve, and
4-way valve based on
the operation signals
transmitted by the
hydro unit.