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Quick Reference Guide - Page 3
Notes on System Design
• The input water temperature to the Hydro Unit must be 55°C or less.
Especially, be careful when there is an external heating source such as a boiler.
When hot water over 55°C returns, it may result in a failure of the unit or water leakage.
• The flow rate of the circulating water must meet the following range:-
11 and 14 kW 17.5 L/minute or more
8 kW 13 L/minute or more
If the flow rate becomes less than the minimum, the protective device is activated to stop operation.
Ensure the flow rate with a bypass valve, etc. when you use a flow rate valve for the Hydro Unit.
• Do not drive water by power other than the pump built in the Hydro Unit.
• The backup heater operates supplementary to exert a prescribed capacity when the heat pump
cannot exert its capacity at a low outside temperature.
• Install the Hydro Unit and water pipes in a place in which they do not freeze.
• Make the water circuit closed. Never use it as an open circuit.
• To prevent damage to the system during outdoor defrost the circulating water must be 20 litres
or more. If total water amount is not enough, the unit may not function fully due to protective
operation.
Options required for each function
Toshiba Supply Procure locally
Purpose
Part name Model code Part name
Space Heating - -
Radiator(s),
Fan coil(s),
Under floor heating
Space Heating &
Space Cooling
(All Rooms)
- - Fan coil(s) only
Space Heating &
Space Cooling
(partly heating only)
- -
Fan coil(s) plus
Radiator(s)
or Under floor heating
Motorized 2-way
valve
150L Hot water cylinder HWS-1501CSHM3-E
150L Hot water cylinder HWS-1501CSHM3-UK
210L Hot water cylinder HWS-2101CSHM3-E
210L Hot water cylinder HWS-2101CSHM3-UK
300L Hot water cylinder HWS-3001CSHM3-E
Domestic Hot Water
300L Hot water cylinder HWS-3001CSHM3-UK
Motorized 3-way
valve
Earth leakage breaker
Motorized mixing
valve
Circulator pump
2-zone control - -
Buffer tank
Interlocking with
boiler
Output control board kit
(1)
TBC-PCIN3E Boiler
Interlocking with
booster heater
- - Electric heater