Toshiba HWS-802H-E, HWS-802XWHT6-E, HWS-802XWHM3-E, HWS-3001CSHM3-E(-UK), HWS-1402H-E Heater control

Item	Operation flow and applicable data, etc.
8-3.	2) Heater control
Hydro Unit	2-1) Hot water supply operation
Control	During a hot water heat pump operation, the unit energizes the hot water cylinder heater (2.75 kW) when all the
	following conditions are met. Note that when the hot water supply set temperature (TSC_F) is reached, the unit stops
	energizing the heater.
	• When 30 minutes has passed after the hot water heat pump operation started.
	• The water inlet temperature (TWI) reaches 50°C.
	• The hot water cylinder sensor reaches the HP_OFF temperature (45°C-FC).
	• The HP_ON temperature (38°C-FC) is reached without the hot water HP status.
	• HOT WATER BOOST operation is in progress.

TTW

		Abnormality detection
85	Z zone
	Y zone	Diff : 2K
	Heater off
TSC_H	X zone	TSC_H-4
	Heater on	Hot Water Boost
HP_OFF(45)
		Heater on only with
		Hot Water Boost in operation
	(Heater on without	HP_ON (38)
	hot water HP)
		(Hot water HP start)

2-2) Heating operation

1)Heater control at the time of heat pump operation

•Object to be controlled: Backup heater

The backup heater control starts when 13 minutes has passed after the heating heat pump operation started and select the ZONE (A-D). The backup heater control increases, decreases, or maintains the number of heaters every 10 minutes (FC) depending on the difference between the heating set temperature (TSC_F) and the heater outlet temperature (THO). When the heating set temperature (TSC_F) is reached, the hydro stops energizing the backup heater.

THO

70	E zone		Abnormality detection
			Diff : 2K
	D zone
			Heater off
TSC_F-2
			Heater output down every
	C zone
			5, 10, 15, or 20 minutes
TSC_F-4
			Diff : 2K
	B zone
			KEEP
TSC_F-6
			Diff : 2K
	A zone
			Heater output up every
			10, 20, 30, or 40 minutes
Status			Heater ON / OFF
Heater 1		Backup heater 3 kW = ON
Heater 2		Backup heater 9 kW = ON

The single-phase model of 3 kW has the backup heater 1 only.

The three-phase model of 6 kW has heater 1+2 of 6 kW.

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