Toshiba ESTIA A09-01P Bedienungsanleitung

FILE NO : A09-01P

Quick reference

AIR TO WATER HEAT PUMP

Quick Reference Guide - Page 2

Estia System

Outdoor unit

Hydro unit

Domestic Hot Water

Radiator

Fan coil unit

(Heating or Cooling)

Space Conditioning

Under floor heating

(Zone Control)

Hot water

cylinder

Estia Outdoor Unit

HWS-802H-E 8.0kW Inverter (use Hydro Unit: HWS-802XWH**-E)

HWS-1102H-E 11.2kW Inverter (use Hydro Unit: HWS-1402XWH**-E)

HWS-1402H-E 14.0kW Inverter (use Hydro Unit: HWS-1402XWH**-E)

Estia Hydro Unit

HWS-802XWHM3-E Plate Heat exchanger and 3kW Backup Heater

HWS-802XWHT6-E Plate Heat exchanger and 6kW Backup Heater

HWS-1402XWHM3-E Plate Heat exchanger and 3kW Backup Heater

HWS-1402XWHT6-E Plate Heat exchanger and 6kW Backup Heater

HWS-1402XWHT9-E Plate Heat exchanger and 9kW Backup Heater

Estia Hot Water Cylinder (EU)

HWS-1501CSHM3-E 150L Stainless Steel Tank (with EU Accessories)

HWS-2101CSHM3-E 210L Stainless Steel Tank (with EU Accessories)

HWS-3001CSHM3-E 300L Stainless Steel Tank (with EU Accessories)

Estia Hot Water Cylinder (UK)

HWS-1501CSHM3-UK 150L Stainless Steel Tank (with UK Accessories)

HWS-2101CSHM3-UK 210L Stainless Steel Tank (with UK Accessories)

HWS-3001CSHM3-UK 300L Stainless Steel Tank (with UK Accessories)

Note:

Under floor heating, Fan Coil units, Radiators, valves and Hot Water Piping are procured locally.

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

Quick Reference Guide - Page 4

Installation Examples

Space Cooling and Space 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.

Quick Reference Guide - Page 5

Installation Examples (cont.)

2-Zone Space Heating 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.

Quick Reference Guide - Page 6

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 : 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

Quick Reference Guide - Page 7

Refrigerant Piping

Refrigerant Pipe Lengths and Height

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

Minimum Pipe Length

HWS-802H-E : 5 m

HWS-1102H-E : 3 m

HWS-1402H-E : 3 m

Maximum Pipe Length and Height

H: Max. ±30 m (above or below)

L: Max. 30 m

Note

The maximum pipe length cannot be increased using additional

refrigerant.

Refrigeration and Water Cycle Diagrams

Hydro Unit

Pressure

relief

Air vent valve Pressure

Gauge

valve

Expansion vessel

THO

Sensor

TWI

Sensor

TWO

Sensor

Thermal

Protector

Hi_P_Switch Pump

Water Out

Refrigerant pipe (1 1/4")

at gas side

Flow_Switch

Backup heater

Water Heat exchanger

Water IN

(1 1/4")

Refrigerant pipe

at liquid side

(Outer ø9.52)

P_Sensor

(Outer ø15.88)

Quick Reference Guide - Page 8

Outdoor Unit

HWS-802H-E

HWS-1102H-E, 1402H-E

Quick Reference Guide - Page 9

Water Piping

• Install water pipes according to the regulations of respective countries.

• Install water pipes in a freeze-free place.

• Make sure that water pipes have sufficient pressure resistance (The setting value of the pressure

relief valve is 0.3 MPa).

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

Water Connections

• 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.

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 i

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).

Quick Reference Guide - Page 10

Checking water volume and initial pressure of expansion vessel

The expansion vessel of the Hydro Unit has a capacity of 12 litres.

The initial pressure of the expansion vessel is 0.1 MPa (1 bar).

The suggested initial water charge is 0.2MPa (2 bar).

The pressure of the safety valve is 0.3 MPa (3 bar).

Verify whether the capacity of the expansion vessel is sufficient using the following expression. If

the volume is insufficient, install an appropriate external expansion vessel.

V Action

< 12 L Internal Expansion Vessel Size OK

> 12 L Internal Expansion Vessel Size too small.

Install appropriate external expansion vessel

V: Necessary total vessel capacity (L)

Ɛ: Water expansion coefficient at average hot water temperature

Vs: Total water volume in the closed system (Do not include Hot Water Cylinder)

P1: System pressure at tank setting position (Mpa_abs*).

(Pipe inner pressure during pump operation before heating device operates = water supply

pressure)

P2: Maximum pressure used during operation at tank setting position (MPa_abs*).

(= safety valve setting pressure)

* The absolute pressure value (abs.) is obtained by adding the atmospheric pressure (0.1 MPa (1

bar)) to the gauge pressure.

Water temperature and expansion coefficient (Ɛ)Water temperature and expansion coefficient (Ɛ)

Hot water temperature

(°C)

Expansion rate

(Ɛ) Hot water temperature

(°C)

Expansion rate

(Ɛ)

0 0.0002 50 0.0121

4 0.0000 55 0.0145

5 0.0000 60 0.0171

10 0.0003 65 0.0198

15 0.0008 70 0.0229

20 0.0017 75 0.0258

25 0.0029 80 0.0292

30 0.0043 85 0.0324

35 0.0050 90 0.0961

40 0.0078 95 0.0967

45 0.0100 - -

Example

Maximum Hot Water temperature: 55°C, initial

water charge: 0.2MPa and system volume: 200 L.

The calculated Vessel capacity (V) is 11.6 L:-

0.0145 x200

(0.2+0.1)

(0.3+0.1)

11.6 =

In this case V < 12 L therefore the internal

expansion vessel is sufficient.

There is no need to install an external expansion

vessel.

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