Toshiba HWS-804XWHM3 series Bedienungsanleitung

Quick Reference

Air to Water Heat Pump

Series 4

Hydro Unit

HWS-

804H-**

HWS-

1104H-**

HWS-

1404H-**

HWS-

1104H8-**

HWS-

1404H8-**

HWS-

1604H8-**

HWS-

1104H8R-**

HWS-

1404H8R-**

HWS-

1604H8R-E

Back Up

Heater

HWS-804XWHM3-** P

- - - - - - - - ~, 3Kw

HWS-804XWHT6-** P

- - - - - - - - 3N, 6kW

HWS-804XWHT9-** P

- - - - - - - - 3N, 9kW

HWS-1404XWHM3-**

-P P P P P P P P ~, 3Kw

HWS-1404XWHT6-**

-P P P P P P P P 3N, 6kW

HWS-1404XWHT9-**

-P P P P P P P P 3N, 9kW

Outdoor Unit

Hydro Unit

HWS-1501

CSHM3-E

HWS-2101

CSHM3-E

HWS-3001

CSHM3-E

HWS-1501

CSHM3-UK

HWS-2101

CSHM3-UK

HWS-3001

CSHM3-UK

HWS-804XWHM3-**

HWS-804XWHT6-**

HWS-804XWHT9-**

HWS-1404XWHM3-**

HWS-1404XWHT6-**

HWS-1404XWHT9-**

Hot Water Cylinder

Estia System

Component Combinations

Outdoor unit

Hydro unit

Hot Water

Hot water

cylinder

Under floor heating

(Zone Control)

Radiator

Fan coil unit

(Heating or Cooling)

Heating or Cooling

New Features for 4 Series ESTIA:

A-rated water circulating pump installed in hydro unit

Minimum target water temperature reduced to 7°C in cooling mode for improved compatibility with fan

coil units

Hydro unit pump ON / OFF cycling function –to momentarily operate water pump during long periods of

system OFF

Option to use an external cylinder thermostat, on locally supplied hot water cylinders, for domestic hot

water production

Improved control for second remote controller when used with under floor heating

Improved control for ESTIA / boiler connection

New expansion vessel for hydro unit

New compressor for single phase ESTIA outdoor units

Note:

Under floor heating components, fan coil units, radiators, valves and other installation materials must be

procured locally.

Notes on System Design

• The input water temperature to the hydro unit must be 50°C or less. This is especially important if the

hydro unit is used in conjunction with any other external heating source (auxiliary boiler, electric booster

heaters etc.)

Unit failure or water leaks may result if the return water temperature, to the hydro unit, exceeds 50°C

• The minimum flow rate for the circulating water in the heating/cooling circuit must meet the following

range:-

11, 14 and 16 kW: 17.5 L/minute or more

8 kW: 13 L/minute or more

If the flow rate becomes less than the flow rate specified above, the flow switch in the hydro unit is activated

to stop operation.

When thermostatic devices are used for temperature control a bypass valve must be fitted to the heating

circuit, to ensure the minimum water flow rate is maintained in the event of all thermostatic devices closing

at the same time

• Only use the water pump, built into the hydro unit, to circulate the water in the heating circuit

• The hydro unit back up heaters will operate to assist the heat pump capacity output during low ambient

conditions

• The hydro unit has been designed for indoor installations. Do not install outside where there is a risk of

low ambient conditions. This may cause the water in the pipe work to freeze

• Make the water circuit closed. Never use it as an open circuit.

• To prevent damage to the system the volume of the circulating water must be 20 litres or more. If total

volume of water amount is less than 20 litres, then the unit may not function fully due to the operation of

protective controls.

Installation Examples

Cooling and Heating with Domestic Hot Water

When both cooling and heating are used, install a 2-way valve (for cooling) to the pipe to the room

for heating only.

Installation Examples (cont.)

2-Zone Temperature Control with Domestic Hot Water

The following shows an example of the 2-zone temperature control.

A buffer tank and a water pump are required for the 2-zone temperature control. This example is

Heating only, if the Fan Coils are to be used for Cooling then a 2-Way valve must be fitted.

Installation example of water circuit:-

(1) (2)

(3) (4)

(5) (6)

The water circuit for a system without a buffer tank [ (1) , (2) , (3) , (5) ] requires 17.5l/min

(804XWH = 13.0l/min) or more. This water flowing requires 5 or more branches of Floor heating or

Radiators etc.

Less than 5 branches may cause a flow deficiency. In this case, please provide a buffer tank and

secondary pumps, as shown in (4).

Please check how to install the boiler.

Hydro Unit –Exploded View

1. Expansion vessel

2. Hi Pressure switch (4.15 MPa)

3. Temperature sensor (for Heat pump outlet -TWO)

4. Pressure sensor

5. Heat exchanger

6. Flow switch (13.0 L/min 17.5 L/min)

7. Temperature sensor (for refrigerant -TC)

8. Temperature sensor (for water inlet -TWI)

9. Drain nipple

10. Water inlet connection

11. Refrigerant liquid connection

12. Air relief valve

13. Pressure relief valve (0.3 MPa (3 bar))

14. Thermal protector (auto)

15. Temperature sensor (for water outlet THO)

16. Thermal protector (Single operation)

17. A-rated water pump

18. Backup heater (3 kW, 3 kW x 2, 3 kW x 3)

19. Manometer

20. Water outlet connection

21. Refrigerant gas connection

Refrigerant Pipe Lengths and Height

The length and height of the refrigeration pipe must be within the following values.

As long as the Hydro Unit is installed within these ranges, no additional refrigerant is required.

Minimum Pipe Length

HWS-804H-E : 5 m

HWS-1104H**-E : 5 m

HWS-1404H**-E : 5 m

HWS-1604H**-E: 5m

Maximum Pipe Length and Height

H: Max. ±30 m (above or below)

L: Max. 30 m

Note

The maximum pipe length cannot be increased by increasing the

refrigerant charge

The minimum pipe length cannot be decreased by reducing the

refrigerant charge

Refrigeration and Water Cycle Diagrams

Outdoor Unit: HWS-804H-E

Hydro Units: HWS-804XWH**-E

Outdoor Units: HWS-1104H**-E, HWS-1404H**-E

Hydro Units: HWS-1404XWH**-E

Outdoor Units: HWS-1104H8(R)-E, HWS-1404H8(R)-E, HWS-1604H8(R)-E

Hydro Units: HWS-1404XWH**-E

Water Piping WARNING

• Ensure that the heating circuit, and all components of the heating circuit, are installed in accordance with

all National and local regulations

• The water pipes must not be installed where they are exposed to low ambient air temperatures. This is to

prevent the water freezing in the pipes

• Make sure that water pipes have sufficient pressure resistance

(The setting value of the pressure relief valve is 0.3 MPa).

CAUTION

• Do not use zinc plated water pipes. When steel pipes are used, insulate both ends of the pipes.

• The water to be used must meet the water quality standards specified in EN directive 98/83 EC.

Water Circuit

• Install a strainer with 30 to 40 meshes (procure locally) at the

water inlet of the Hydro Unit

• Install drain cocks (procure locally) for water charge and discharge

at the lower part of the Hydro Unit

• The ESTIA system can only be used on pressurised heating

circuits. If the system is used on gravity fed heating circuits then

system failure may occur

Water Piping Limitations

Design the water pipe length within the QH characteristics

of the pump (flow-rate and pump head).

The maximum height difference for the water pipes is 7

metres.

Piping to hot water tank (option)

Water supplied to the hot water cylinder is branched by a motorized 3-way valve (procured locally).

Connect the hot water cylinder to port A (open when energized) of the valve.

Piping to 2-zone operation (option)

To perform 2-zone temperature control circulate water using another pump (procured locally) through a

motorized mixing valve (procured locally) and a buffer tank (procured locally).

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