Toshiba HWT-601F21SM3W-E Manuale utente

Hydro Unit -All In One Type-

Model name:

HWT-601F21SM3W-E

HWT-601F21ST6W-E

HWT-1101F21SM3W-E

HWT-1101F21MM3W-E

HWT-1101F21ST6W-E

HWT-1101F21MT6W-E

HWT-1101F21ST9W-E

HWT-1101F21MT9W-E

AIR TO WATER HEAT PUMP

Installation Manual R32

English

– 1 –

Hydro Unit Installation Manual

Original instructions

Contents

1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Accessory parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

3 Preparations for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

4 Precautions for safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

5 Example of Hydro Unit installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

6 Main components of Hydro Unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

7 Hydro Unit installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

8 Group control and optional controllers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

9 Start up and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

12 Technical parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Please read this Installation Manual carefully before installing the Air to Water Heat Pump.

• This Manual describes the installation method of the Hydro Unit.

• For installation of the Outdoor Unit, follow the Installation Manual attached to the Outdoor Unit.

• This system is for residential use only.

REFRIGERANT

This Air to Water Heat Pump uses an HFC refrigerant (R32) in order to prevent destruction of the ozone layer.

1General information

■System combination

■General specifications

Outdoor Unit

Single Phase model

Outdoor Unit

Hydro Unit HWT-

401HW-E

HWT-

601HW-E

HWT-

801HW-E

HWT-

1101HW-E

HWT-

801HRW-E

HWT-

1101HRW-E

Backup

heater

Zone2

Control

HWT-601F21SM3W-E – – – – ~, 3kW –

HWT-601F21ST6W-E – – – – 3N ~, 6kW –

HWT-1101F21SM3W-E – – ~, 3kW –

HWT-1101F21MM3W-E – – ~, 3kW

HWT-1101F21ST6W-E – – 3N ~, 6kW –

HWT-1101F21MT6W-E – – 3N ~, 6kW

HWT-1101F21ST9W-E – – 3N ~, 9kW –

HWT-1101F21MT9W-E – – 3N ~, 9kW

Single phase model Single phase with Cord

Heater

Outdoor Unit HWT-401HW-E HWT-601HW-E HWT-801HW-E HWT-1101HW-E

Power supply 220-240 V ~ 50 Hz

Type INVERTER

Function Heating & Cooling

Heating

Capacity (kW) 4.0 6.0 8.0 11.0

Input (kW) 0.77 1.25 1.54 2.39

COP (W/W) 5.20 4.80 5.19 4.60

Cooling

Capacity (kW) 4.0 5.0 6.0 8.0

Input (kW) 1.16 1.52 1.88 2.86

EER (W/W) 3.45 3.30 3.20 2.80

Refrigerant R32

Dimension H x W x D (mm) 630 x 800 x 300 1,050 x 1,010 x 370

Outdoor Unit with Cord heater

HWT-801HRW-E HWT-1101HRW-E

Power supply 220-240 V ~ 50 Hz

Type INVERTER

Function Heating & Cooling

Heating

Capacity (kW) 8.0 11.0

Input (kW) 1.54 2.39

COP 5.19 4.60

Cooling

Capacity (kW) 6.0 8.0

Input (kW) 1.88 2.86

EER 3.20 2.80

Refrigerant R32

Dimension HxWxD (mm) 1,050 x 1,010 x 370

Cord heater (W) 150

1-EN 2-EN

– 2 –

Hydro Unit Installation Manual

Hydro Unit

4 kW, 6 kW model

8 kW, 11 kW model

Hydro Unit HWT-601F21SM3W-E HWT-601F21ST6W-E

Back up heater capacity (kW) 3.0 6.0

Power supply for back up heater 220-240 V ~ 50 Hz 380-415 V 3N ~ 50 Hz

Leaving water

temperature

Heating (°C) 20-55

Cooling (°C) 7-25

Max water temperature for DHW (°C) 65

Dimension H x W x D (mm) 1,700 x 600 x 670

Volume DHW tank (L) 210

Pressure setting, DHW safety valve (MPaG) 0.6

Pressure setting, Space heating safety valve (MPaG) 0.25

Hydro Unit HWT-1101F21SM3W-E

HWT-1101F21MM3W-E

HWT-1101F21ST6W-E

HWT-1101F21MT6W-E

HWT-1101F21ST9W-E

HWT-1101F21MT9W-E

Back up heater capacity (kW) 3.0 6.0 6.0

Power supply for back up heater 220-240 V ~ 50 Hz 380-415 V 3N ~ 50 Hz 380-415 V 3N ~ 50 Hz

Leaving water

temperature

Heating (°C) 20-65

Cooling (°C) 7-25

Max water temperature for DHW (°C) 65

Dimension H x W x D (mm) 1,700 x 600 x 670

Volume DHW tank (L) 210

Pressure setting, DHW safety valve (MPaG) 0.6

Pressure setting, Space heating safety valve (MPaG) 0.25

2Accessory parts

No. Parts name Quantity

1 Installation Manual (this document) 1

2 Owner’s Manual 1

3CD 1

3-EN 4-EN

– 3 –

Hydro Unit Installation Manual

3Preparations for installation

■Parts required to connect this product (Common items)

■Options required for each function

Category Part Specification Quantity

Water piping

Drain cock (for water charge) 1

Isolating ball valves 1"

for service 1" 2

Electrical system Earth leakage breaker for main power supply 30 mA 1

Earth leakage breaker for backup heater 30 mA 1

Purpose In the Hydro Unit Purchased part

Part name Model name Part name Prescribed specification

Heating – – Radiator(s), Fan coil(s), Under

floor heating

Heating & Cooling

(all rooms) – – Fan coil(s)

Heating & Cooling

(partly heating only) ––

Motorized 2-way valve (for

cooling)

Refer to “Control parts

specifications” on page 13.

Interlocking with boiler – – Boiler

Other power supply.

Signal 12 V input function is

required for boiler.

4Precautions for safety

■General safety precautions

Ensure that all Local, National and International regulations are

satisfied.

• Read the “Precautions for safety” carefully before installation.

• The precautions described below include the important items

regarding safety – Observe them without fail.

• After the installation work has been completed, perform a test run

to check for any problems. Follow the Owner’s Manual to explain

how to use and maintain the unit to the customer.

• Turn off the main power supply switch (or breaker) before unit

maintenance.

• Ask the customer to keep the Installation Manual along with the

Owner’s Manual.

■Refrigerant precautions

• If a refrigerant leak is suspected contact the dealer who supplied

the system, in the case of a recharge of refrigerant ask service

personnel for details of the leak and confirmation of the repairs

completed.

• Generally the refrigerant does not leak, however, if the refrigerant

should leak into a room and a heater or stove burner in the room

is lit, toxic gas may be generated.

• Do not install the system in a location subject to a risk of exposure

to a combustible gas.

If a combustible gas leaks and stays around the unit a fire may

occur.

5-EN 6-EN

– 4 –

Hydro Unit Installation Manual

• Install the refrigerant pipe securely during installation and before

operation.

If the compressor is operated with no pipe work connected and

valves open the compressor will suck air which would result in

over pressurization of the system which may result in bursting or

injury.

Observe the same precautions for refrigerant recovery work

(pump back procedure to Outdoor Unit) and do not disconnect

pipe work until refrigerant is recovered and valves closed.

Installation precautions

• Ask an authorized dealer or qualified installation professional to

install/maintain the Air to Water Heat Pump System.

Inappropriate installation may result in water leaks, electric shock

or fire.

• Electrical work must be performed by a qualified electrician in

accordance with the installation manual.

An inappropriate power supply capacity or installation may result

in fire.

• When completing any electrical works to the system ensure that

all Local, National and International regulations are satisfied.

Inappropriate grounding may result in electric shock.

• Ensure all electrical cables, used for the Hydro Unit installation,

comply with all Local and National regulations. Check all electrical

terminations are secure and tight.

• Earth wire connections.

• Install an earth leakage breaker without fail.

Incomplete grounding can cause electric shock.

Do not earth wires to gas pipes, water pipes, lightning rods or

telephone cable earth wires.

• This unit must be connected to the main power supply using a

circuit breaker or switch with a contact separation of at least 3 mm.

• Be sure to turn off all main power supply switches or the circuit

breaker before starting any electrical work.

Ensure all power switches are off, failure to do so can cause

electric shock.

Use an exclusive power circuit for the Air to Water Heat Pump

system using the rated voltage.

• Ensure correct connection of interconnecting wire between

Outdoor Unit and Hydro Unit.

Incorrect connection of the interconnecting cable may result in the

damage of electrical parts.

WARNING

7-EN 8-EN

– 5 –

Hydro Unit Installation Manual

• Under no circumstances must the power cable be extended.

Poor connections, where the cables are joined, may give rise to

smoking and/or fire.

• Ensure refrigeration system remains sealed to external gases and

air.

Should air or other gases contaminate the refrigeration circuit,

high system pressures could result in burst pipes and injuries.

• Do not modify or bypass any of safety guards or switches in this

system.

• After unpacking the Outdoor Unit, examine the unit carefully for

any possible damage.

• Do not install in any place that might increase the vibration of the

unit.

• To avoid personal injury (with sharp edges), be careful when

handling the Hydro Unit.

• Due to the heavy weight of the unit, please ensure appropriate

levels of care, is taken when moving and positioning the unit into

its final location.

• Perform installation work properly in accordance with the

installation manual.

Inappropriate installation may result in water leaks, electric shock

or fire.

• Tighten all flare nuts with a torque wrench in the specified manner.

Excessive tightening of the flare nut may result in cracking of the

pipe work or flare nut which may result in a refrigerant leakage.

• Wear heavy duty gloves during installation work to avoid injury.

• Install the Outdoor Unit securely in a location where the base can

sustain the weight adequately.

• In enclosed areas, if the refrigerant leaks during installation vacate

and ventilate immediately.

• After installation is complete ensure and confirm that refrigerant

does not leak.

If refrigerant leaks into a room and flows near a fire source noxious

gas may be generated.

• Do not block any drain hoses. Hoses may come off and electric

shocks may occur.

• Install in room with water drain.

• This appliance is intended to be permanently connected to the

water mains and not connected by a hose set.

• The maximum inlet water pressure for DHW is 0.6 MPa.

• The maximum inlet water pressure for space heating is 0.25 MPa.

• The minimum inlet water pressure for space heating is 0.05 MPa.

9-EN 10-EN

– 6 –

Hydro Unit Installation Manual

■Notes on system design

• The inlet water temperature for space heating to the Hydro Unit for

HWT-110 must be 65 °C or less. (For HWT-60 must be 55 °C or

less.)

Especially, be careful when there is an external heating source

such as a boiler.

When hot water over 65 °C or 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 kW 13 L/minute or more

6 kW 10 L/minute or more

If the flow rate becomes less than the minimum, the protective

device is activated to stop the operation.

To ensure the minimum flow rate of the water system, install a

bypass valve on one water circuit. Please note this circuit must

contain a minimum of 20 liters. If total water amount is not enough,

the unit may not function fully due to protective operation.

• Do not drive water by power other than the pump built in the Hydro

Unit.

• The back up heaters, in the Hydro Unit, are designed to assist the

heat pump during periods of low ambient conditions and during

domestic hot water (DHW) production.

• Ensure the Hydro Unit and the connecting water pipes are

installed in a location that is not exposed to low ambient

temperatures which could result in the water circuit freezing.

• The system operation is designed around a closed water circuit.

Do not use an open circuit design.

• Please turn on the main power supply to up to 12 hours before the

system is started and ensure the power remains switched on for

the period of use.

5Example of Hydro Unit installation

■Example of installation for cooling and heating

When both cooling and heating modes are required a 2-way valve must be installed to isolate the radiator or under-

floor heating circuit.

▼Fig.5-01

Fan Coil Units

(Cooling or Heating)

Diverting 3-Way

Valve for

Sanitary Hot

Water Cylinder

Radiators (Heating Only)

[2-Way Valve Control]

2-Way

Valve

2-Way

Valve

Alternative to Radiators

Under-floor Heating

(Heating Only)

[2-Way Valve Control]

Indirect Sanitary

Hot Water Cylinder

Drain Cock for water

Charge and Drain

Use the 2-

way valve

to isolate

the heating

circuit

when in

cooling

mode.

Use it when do not

operate cooling.

Isolating

Ball Valves

TTW

11-EN 12-EN

– 7 –

Hydro Unit Installation Manual

■Example of 2-zone temperature control and hot water supply

system

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

▼Fig.5-02

Drain Cock for water

Charge and Drain

TFI

TTW

TRV

Isolating

Ball Valves

Strainer (40 mesh / 0.4 mm)

Indirect Sanitary

Hot Water Cylinder

Zone 2

Under-floor Heating

(2-Way Valve Control)

Motorized 2-Way Valve is required if fan coil units are in cooling

operation.

In case of that the water circuit of 2nd pump is dead end, set

DN64 to "1". Pump 2 operation can be stopped during cooling .

Zone 1

Fan Coil Unit (Heating

or Cooling)

Temp.

Regulating

Valve

(Mechanical)

Temperature

Regulating

Valve

(Mechanical)

Hi-Pressure

By-Pass

Valve

6Main components of Hydro Unit

■Exploded view and description for Hydro Unit

▼Fig.6-01

19 20 22 21 9 10 25 26

13 29

1 : Expansion vessel

2 : Temperature sensor (for Heat pump outlet -TWO)

3 : Pressure sensor

4 : Heat exchanger

5 : Flow sensor

6 : Temperature sensor (for refrigerant -TC)

7 : Temperature sensor (for water inlet -TWI)

8 : Drain

9 : Refrigerant gas connection

10 : Refrigerant liquid connection

11 : Air vent valve

12 : Overpressure preventive valve (0.25 MPaG (2.5 barG))

13 : Thermal protector (auto)

14 : Temperature sensor (for water outlet THO)

15 : Thermal protector (Single operation)

16 : Water pump

17 : Backup heater (3 kW, 3 kW x 2, 3 kW x 3)

18 : Manometer

19 : Water inlet connection (for Domestic Hot water)

20 : Water outlet connection (for Domestic Hot water)

21 : Water inlet connection (for Zone1)

22 : Water outlet connection (for Zone1)

23 : Three - way valve

24 : Mixing valve

25 : Water inlet connection (for Zone2)

26 : Water outlet connection (for Zone2)

27 : Temperature sensor (for Water outlet to Zone2 -TFI)

28 : Safety group, DHW

29 : Cable channel, Power cables

30 : Cable channel, Low voltage cables

13-EN 14-EN

– 8 –

Hydro Unit Installation Manual

■E-box layout

▼Fig.6-02

CN21

TB03

CN22

CN23

TB04

TB01

Digital input terminals

Back up heater power

supply connection

Digital output terminals

230 VAC 50 Hz output

terminals

Second remote

controller terminal

connection

Hydro unit power

supply connection

7Hydro Unit

installation

WARNINGWARNING

• To protect yourself from injury, always use PPE

(Personal Protective Equipment), that is, wear gloves.

• Install the Hydro Unit by at least four persons.

• Install the Hydro Unit in a place strong enough to

withstand the following weights:

The dry weight of the Hydro Units displayed on the

product nameplate. When the Hydro Unit, is filled with

water the weight of the unit will increase by 210 kg.

CAUTION

• Do not install the unit in a place where water freezes.

• Do not install the Hydro Unit in a place where

combustible gas may leak.

• Do not install the Hydro Unit in a place exposed to rain

or water.

• Do not install the Hydro Unit near equipment which

generates heat.

• Do not install the Hydro Unit to a movable object.

• Do not install the Hydro Unit in a place exposed to

vibration.

• The unit must be installed in accordance with national

wiring regulation.

• The Hydro Unit must not be installed in a high humidity

condition area.

• Must be installed accordance with national plumbing

regulation.

■Handling, unpacking, and

checking the Hydro Unit

• The unit should be checked when it is delivered, and

any damage reported immediately to the courier

claims department.

■Positioning

Service space

Secure a service space for the Hydro Unit.

• Do not install the Hydro Unit in a place where heat

stagnates.

▼Fig.7-01

Front view

200 mm

20-30 mm

800 mm

Top view

15-EN 16-EN

– 9 –

Hydro Unit Installation Manual

Install the Hydro Unit so that its tilting angle falls with in

the range below by use of the four adjustable feet.

■Refrigerant piping

WARNINGWARNING

• THIS SYSTEM ADOPTS HFC REFRIGERANT (R32)

WHICH DOES NOT DESTROY THE OZONE LAYER.

• Therefore during installation work prevention of the

invasion of water, dust, former refrigerant or oil is of a

paramount importance.

To prevent the charging of incorrect refrigerants into

the system the service valve connection ports have

also increased in size.

• The use of R32 or R410A tools is required for correct

installation of the system.

• The use of the correct pipe sizes and wall thicknesses

of copper pipe work is required for the correct

installation of the system.

CAUTION

• Ensure all refrigerant pipes are protected from the

invasion of dust and water.

• Ensure all pipe work connections are tightened to the

required torque settings detailed in this section.

• Perform an air tight test using Oxygen Free Nitrogen

(OFN) only.

• Evacuate the air in the pipe work using a vacuum

pump.

• Check for refrigerant gas leaks at all connections

throughout the pipe work.

NOTE

The Air to Water Heat Pump System uses R32

refrigerant. It is important that copper pipes used for

refrigerant piping have the following wall thickness:

• 0.8 mm for Ø6.4 mm, Ø9.5 mm and Ø12.7 mm

• 1.0 mm for Ø15.9 mm

▼Fig.7-02 ▼Fig.7-03

1°

± 1°

Back Front

Side Side

Adjustable feet

Refrigeration pipe

The length and height of the refrigeration pipe must be

within the following values.

▼Fig.7-04

Refrigerant pipe sizes

Flaring

• Cut the refrigerant pipes to the correct length using a

pipe cutter. Remove any burrs that may be on the

pipes as these may cause refrigerant leaks or

component failure in the refrigeration cycle.

• Place the correct size flare nuts onto the pipes (use

the flare nuts supplied with the Hydro Unit or use

flare nuts designed specifically for R32 refrigerant)

and then flare the pipes using the correct flaring tool.

Tightening

• Connect the refrigerant pipes, from the Outdoor Unit,

to the Hydro Unit as shown below.

▼Fig.7-05

• Align the flare connection on each pipe with the

corresponding outlet connection on the Hydro Unit.

Tighten the flare nuts, using fingers, to secure the

pipes in place.

• Tighten the flare nuts, using a torque wrench, to the

tightening torques shown below:

• To prevent damage, to the refrigerant pipes, use two

spanners to tighten the flare nut connections to the

required torque.

Hydro Unit

Model H:Max L:Max L:Min

HWT-60 ±30 m

(above or below) 30 m 5 m

HWT-110 ±30 m

(above or below) 30 m 5 m

Hydro Unit Model Gas Side (mm) Liquid Side

(mm)

HWT-60 Ø 12.7 Ø 6.35

HWT-110 Ø 15.88 Ø 6.35

Outer Ø of Copper Pipe

(mm) Tightening Torque (N/m)

Ø 6.35 14 to 18

Ø 12.7 50 to 62

Ø 15.88 63 to 77

Liquid line

Gas line

17-EN 18-EN

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