Toshiba A09-01P User Manual

FILE NO : A09-01P

Quick reference

AIR TO WATER HEAT PUMP

Quick Reference Guide - Page 2

Estia System

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.

Outdoor unit

Hydro unit

Domestic Hot Water

Hot water cylinder

Space Conditioning

Radiator

Fan coil unit

(Heating or Cooling)

Under floor heating

(Zone Control)

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

Space Heating - -

Space Heating &

Space Cooling

(All Rooms)

Space Heating &

Space Cooling

(partly heating only)

150L Hot water cylinder HWS-1501CSHM3-E 150L Hot water cylinder HWS-1501CSHM3-UK

Domestic Hot Water

2-zone control - -

Interlocking with

boiler

Interlocking with

booster heater

210L Hot water cylinder HWS-2101CSHM3-E 210L Hot water cylinder HWS-2101CSHM3-UK 300L Hot water cylinder HWS-3001CSHM3-E 300L Hot water cylinder HWS-3001CSHM3-UK

Output control board kit

Part name Model code Part name

(1)

Toshiba Supply Procure locally

- - Fan coil(s) only

- -

- - Electric heater

Radiator(s),

Fan coil(s),

Under floor heating

Fan coil(s) plus

Radiator(s)

or Under floor heating

Motorized 2-way

valve

Motorized 3-way

valve

Earth leakage breaker

Motorized mixing

valve

Circulator pump

Buffer tank

TBC-PCIN3E Boiler

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.

Hydro Unit – Exploded View

Quick Reference Guide - Page 6

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

Refrigerant pipe at gas side (Outer ø15.88)

Refrigerant pipe at liquid side (Outer ø9.52)

Expansion vessel

Hi_P_Switch

P_Sensor

TC Sensor

Water Heat exchanger

Thermal

Protector

TWO Sensor

Air vent valve

Backup heater

Pressure relief valve

THO Sensor

Flow_Switch

Pressure Gauge

Pump

Water Out (1 1/4")

TWI Sensor

Water IN (1 1/4")

Outdoor Unit HWS-802H-E

Quick Reference Guide - Page 8

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)

Hot water temperature

(°C)

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 - -

Expansion rate

(Ɛ)

Water temperature and expansion coefficient (Ɛ)

Hot water temperature

(°C)

Expansion rate

(Ɛ)

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:-

11.6

0.0145

In this case V < 12 L therefore the internal expansion vessel is sufficient. There is no need to install an external expansion vessel.

200 (0.2+0.1) (0.3+0.1)

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