Toshiba HWS-803XWHM3-E Service Manual page 50

Item
8-2. 3) Heating operation
Operation Mode
<Operation only for ZONE1>
and Control
• This operation is enabled when DP_SW12_2 ZONE1 is set to "OFF" (default).
Method
• The remote controller displays
<Operation for ZONE1 and ZONE2 (2 temperatures control)>
• This operation is enabled when DP_SW12_2 ZONE1 is set to "OFF" (default) and DP_SW12_3 ZONE2 to "ON".
• The remote controller displays
• To set temperatures for
and
• For 2 zone temperatures control, the flow adjustment of MIXING VALVE controls the water temperature of
see the description on MIXING VALVE control in 8-3-5.
1) Operation start condition
Pressing the [ZONE1, 2] button of remote controller starts a
heating operation. *1 *2
2) Operation mode selection
An operation mode is determined according to the temperature
of TWI sensor.
• Heat pump operation selection *1 *2
When TWI < TSC_F (d zone in the right figure) is met, the
heat pump operation is selected.
• Thermostat status "OFF"
When TWI
thermostat status "OFF" is selected.
3) Operation stop condition
When the following condition is met, the heating operation
stops.
• The remote controller gives a stop instruction.
*1: When the outside temperature is -20°C or below, the heater
operation is selected even if the TWI temperature falls into "d
zone".
*2: When "Hot water supply" and "Heating" are simultaneously in
operation, the heater operation may be selected depending on
the outside air temperature.
Related FC
FC No.
1A
1B
1C
1D
Operation flow and applicable data, etc.
can be changed.
and
.
. For details,
TSC_F (e zone in the right figure) is met, the
Setting item
Upper limit of heating (Zone1) limited temperature
Lower limit of heating (Zone1) limited temperature
Upper limit of heating (Zone2) limited temperature
Lower limit of heating (Zone2) limited temperature
settings, and only the set temperature of
settings, and the set temperatures of
, use SELECT
TSC_F
Default
55
20
55
20
49
can be changed.
to switch between
TWI
Thermostat off
e zone
operation
diff2K
d zone
Heat pump operation
TSC_F is a heating temperature
set with remote controller
Setting available range
37-55°C
20-37°C
37-55°C
20-37°C