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
Purpose | Toshiba Supply | ||
Part name | Model code | ||
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Space Heating | - | - | |
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Space Heating & |
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Space Cooling | - | - | |
(All Rooms) |
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Space Heating & |
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Space Cooling | - | - | |
(partly heating only) |
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| 150L Hot water cylinder | ||
| 150L Hot water cylinder | ||
Domestic Hot Water | 210L Hot water cylinder | ||
210L Hot water cylinder | |||
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| 300L Hot water cylinder | ||
| 300L Hot water cylinder | ||
- | - | ||
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Interlocking with | Output control board kit | ||
boiler | (1) | ||
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Interlocking with | - | - | |
booster heater | |||
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Procure locally
Part name Radiator(s), Fan coil(s), Under floor heating
Fan coil(s) only
Fan coil(s) plus
Radiator(s)
or Under floor heating
Motorized
valve
Motorized
valve
Earth leakage breaker
Motorized mixing
valve
Circulator pump
Buffer tank
Boiler
Electric heater
