Mitsubishi PWFY-P100VM-E-BU, PWFY-P100VM-E-AU, PWFY-P200VM-E-AU Technical Guide

AIR CONDITIONING SYSTEMS

For Internal Training

FM 33568 / ISO 9001;2000

Certificate Number EC97J1227

The Air Conditioning & Refrigeration Systems Works acquired ISO 9001 certification under Series
9000 of the International Standard Organization (ISO) based on a review of Quality , management for
the production of refrigeration and air conditioning equipment.

ISO Authorization System
The ISO 9000 series is a plant authorization system relating to quality management as stipulated by
the ISO. ISO 9001 certifies quality management based on the "design, development, production,
installation and auxiliary services" for products built at an authorized plant.

The Air Conditioning & Refrigeration Systems Works acquired environmental management system
standard ISO 14001 certification.

The ISO 14000 series is a set of standards applying to environmental protection set by the
International Standard Organization (ISO).

http://Global.MitsubishiElectric.com

Air to Water Booster unit
Air to Water HEX unit

Sales / Technical Guide

MEE08K021

New publication effective Sep. 2008

Specifications subject to change without notice

NEW TECHNOLOGY

CONTENTS

1

THE BASICS

1-1 What is Booster unit?
1-2 What is HEX unit?

With many people spending much of their time
indoors at home or work, it is not surprising that
buildings account for a large percentage of all
energy use. This means that there is great scope for
reducing energy use through better-designed
buildings and more efficient heating, cooling and
hot-water systems.

WE NEED TO

Reduce CO2 emissions
Improve energy performance

Ensure that we heat and cool by the most efficient
means possible.

2

FEATURES

2-1 Comparison between Booster unit, HEX unit,
gas/oil boilers, and electric heaters

2-2 Wide range of applications
2-3 Selecting a model

3

CONTROL

3-1 Control options designed for Booster unit
and HEX unit

As a leading manufacturer of energy efficient heat
pump systems, we constantly strive to meet and
exceed the increasing demands placed on our
industry. The drive to reduce energy consumption
and the impact it’s use has on the environment is
crucial and increasingly important to us all. The need
to be more energy conscious and environmentally
responsible has long driven Mitsubishi Electric to
spend huge amounts of resource on researching and
developing the solutions of the future. As market
leaders, at the forefront of the very latest technology,
we pride ourselves in providing high performance
and competitive systems on which you can rely.
Amongst such developments is the advanced heat
pump technology used in Booster unit and HEX unit.

4

INSTALLATION

4-1 Installation

5

Q&A

5-1 Booster unit/HEX unit Specification and function
5-2 Booster unit/HEX unit Installation and service
5-3 Sales

1 2

1-1

1-2

What is Booster unit?

Efficient and technologically advanced, Booster unit takes advantage of proven heat recovery
technology to provide hot water for sanitary use and is one of the most advanced, efficient hot water
systems available today.

TECHNOLOGY

Benefiting from the heat recovery operation of the
CITY MULTI R2 system, Booster unit converts
energy from the air to higher temperatures suitable
for heating water and results in virtually no energy
waste.

HIGH EFFICIENCY

Capable to air condition and supply hot water in a
single system, Booster unit is ideal for use in a
variety of applications. From hotels to restaurants to
gyms, it works perfectly in providing optimum air
environment and hot water to a maximum of 70˚C.

Booster unit

for R2

Booster
Unit

Outdoor

water

LEV

LEV

CITY MULTI

R2

series

Pump

Plate Hex.

R134a

Plate Hex.

R410A

Closed loop circuit

HP

Comp.

LP

BC controller

Indoor

unit

TANK

Indoor

Indoor

unit

What is HEX unit?

With a high COP output achieved, the MITSUBISHI ELECTRIC HEX unit system provides a greater
level of comfort, lower CO

TECHNOLOGY

HEX unit works perfectly to provide heating and
cooling to water fan coil units, panel heaters, or
under floor heating systems. It benefits from the
high-efficient operation of our CITY MULTI and heat
recovery operation when used with R2 system.

FEATURES

HEX unit offers 45˚C in heating and down to 8˚C in
cooling, making it suitable for residential properties,
offices or hotels, providing an optimal environment
while benefiting from reduced running costs and
lessening the impact on our environment.

2 emissions and reduced running costs.

HEX unit

for Y/R2

Pump

HEX Unit

CITY MULTI

R2,Y

series

Outdoor

water

LEV

Plate Hex.

R410A

Closed loop circuit

❈BC controller is only required for
the system with R2 series.

BC controller

Indoor

unit

Indoor

Floor Heating or
Panel Heater
or FAN-coil(AHU)

Indoor

unit

Model

Power source

Power input

Current input
Temp. range of
heating
Connectable
outdoor unit Model / Quantity

Sound pressure level (measured in anechoic room)
Diameter of
refrigerant pipe
Diameter of
water pipe
Field drain pipe size
External finish
External dimension H ✕ W ✕ D

Net weight
Compressor

Circulating water
Protection on Internal circuit

(R134a)

Design pressure

Standard attachment

Optional parts
Remark

Note:

* Due to continuing improvement, the above specifications may be subject to change without notice. * Install the unit in an environment where the

* Please don't use the steel material for the water piping material. * The water circuit must use the closed circuit.
* Please always make water circulate or add the brine to the circulation water when the ambient temperature becomes 0˚C or less.
* Please always make water circulate or pull out the circulation water completely when not using it.
* Please do not use groundwater and well water.

*1 Nominal heating conditions
Outdoor Temp. : 7˚CDB/6˚CWB (45˚FDB / 43˚FWB)
Pipe length : 7.5 m (24-9/16 ft)
Level difference : 0m (0ft)
Inlet water Temp 65˚C Water flow rate 2.15m3/h

Outdoor temp.

Inlet Water temp.

Total capacity

Liquid

Gas

Inlet

Outlet

Type

Maker

Starting method

Motor output

Lubricant

Operation volume Range

High pressure protection

Inverter circuit (COMP)

Compressor

Type ✕ original chargeRefrigerant

Control

R410a

R134a

Water

ExternalDrawing

Wiring

Document

Accessory

kWHeating capacity
kcal / h(Nominal )
BTU / h
kW
A
W.B

-

dB<A>
mm(in.)
mm(in.)
mm(in.)
mm(in.)
mm(in.)

mm
in.
kg(lb)

kW

3

/h

m

MPa
MPa
MPa

PURY-P450YSHM-A(-BS)~PURY-P800YSHM-A(-BS)
PURY-EP200YHM-A(-BS)~PURY-EP300YHM-A(-BS)

PURY-EP400YSHM-A(-BS)~PURY-EP600YSHM-A(-BS)

31-1/2" (30-15/16" without legs) ✕ 17-3/4" ✕ 11-13/16"

High pressure sensor, High pressure switch at 3.60 MPa (601 psi)

Discharge thermo protection, Over-current protection

Strainer, Heat insulation material, 2 ✕ Connector sets

Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and
other items shall be referred to the Installation Manual.

wet bulb Temp. will not exceed 32degC.

* Please do not use it as a drinking water.

* The unit is not designed for outside installations.

PWFY-P100VM-E-BU

1-phase 220-230-240V 50/60Hz

50~100% of outdoor unit capacity

PURY-P200YHM-A(-BS)~PURY-P400YHM-A(-BS)

800 (785 without legs) ✕ 450 ✕ 300

Inverter rotary hermetic compressor

MITSUBISHI ELECTRIC CORPORATION

Over-heat protection, Over-current protection

Installation Manual, Instruction Book

12.5
10,800
42,700

2.48

11.63 - 11.12 - 10.66

-20~32˚C (59~90˚F)

10~70˚C (50~158˚F)

44

ø9.52 (ø3/8") Brazed

ø15.88 (ø5/8") Brazed

PT3/4 Screw
PT3/4 Screw

ø32 (1-1/4")

NO

60 (133)

Inverter

1.0

NEO22

0.6~2.15

R134a ✕ 1.1kg (0.50lb)

LEV

4.15

3.60

1.00

WKB94L762

E64C226X01

NONE

kcal = kW ✕ 860
BTU/h = kW ✕ 3,412
cfm = m3/min ✕ 35.31
lb = kg / 0.4536

* The specification data is subject
to rounding variation.

Unit converter

Model

Power source

Power input

Temp. range of
heating

Connectable
outdoor unit

Sound pressure level (measured in anechoic room) dB<A>
Diameter of
refrigerant pipe
Diameter of
water pipe
Field drain pipe size
External finish
External dimension H ✕ W ✕ D

Net weight
Circulating water
Design pressure

Drawing

Standard attachment

Optional parts
Remark

Note:

Outdoor Temp. : 7˚CDB/6˚CWB (45˚FDB / 43˚FWB) Outdoor Temp. : 35˚CB (95˚FDB)

Inlet water Temp 30˚C

* Due to continuing improvement, the above specifications may be subject to change without notice.

* Please don't use the steel material for the water piping material. * The water circuit must use the closed circuit.
* Please always make water circulate or add the brine to the circulation water when the ambient temperature becomes 0˚C or less.
* Please always make water circulate or pull out the circulation water completely when not using it.

Current input
Outdoor temp.

Inlet Water temp.

Power input
Current input
Outdoor temp.Temp. range of cooling

Total capacity
Model / Quantity

Liquid
Gas
Inlet
Outlet

Operation Volume Range
R410a
Water
External
Wiring
Document
Accessory

Water flow rate 2.15m

3

/h

kW*1Heating capacity
kcal / h

*1(Nominal)

BTU / h

*1

kW
A
W.B
W.B

­kW*2Cooling capacity
kcal / h

*2(Nominal)

BTU / h

*2

kW
A
D.B
D.B

-Inlet Water temp.

mm(in.)
mm(in.)

mm(in.)
mm(in.)

mm(in.)

mm

in.

kg(lb)

3

m

/h
MPa
MPa

*2 Nominal cooling conditions *1 Nominal heating conditions

Pipe length : 7.5 m (24-9/16 ft)Pipe length : 7.5 m (24-9/16 ft)
Level difference : 0m (0ft)Level difference : 0m (0ft)
Inlet water Temp 23˚C

PURY-P200YHM-A(-BS)~PURY-P400YHM-A(-BS)
PURY-P450YSHM-A(-BS)~PURY-P800YSHM-A(-BS)
PURY-EP200YHM-A(-BS)~PURY-EP300YHM-A(-BS)

PURY-EP400YSHM-A(-BS)~PURY-EP600YSHM-A(-BS)

PUHY-P200YHM-A(-BS)~PUHY-P450YHM-A(-BS)

PUHY-P500YSHM-A(-BS)~PUHY-P1250YSHM-A(-BS)

PUHY-EP200YHM-A(-BS)~PUHY-EP300YHM-A(-BS)

PUHY-EP400YSHM-A(-BS)~PUHY-EP900YSHM-A(-BS)

31-1/2" (30-15/16" without legs) ✕ 17-3/4" ✕ 11-13/16"

Strainer, Heat insulation material, 2 ✕ Connector sets

PWFY-P100VM-E-AU

1-phase 220-230-240V 50/60Hz

0.068 - 0.065 - 0.063

-20~32˚C (-4~90˚F) PURY - series

-20~15.5˚C (-4~60˚F) PUHY - series
10~40˚C (50~104˚F)

0.068 - 0.065 - 0.063

-5~43˚C (23~110˚F) PURY - series

-5~43˚C (23~110˚F) PUHY - series

10~35˚C (50~95˚F)

50~100% of outdoor unit capacity

ø9.52 (ø3/8") Brazed

ø15.88 (ø5/8") Brazed

800 (785 without legs) ✕ 450 ✕ 300

Installation Manual, Instruction Book

Details on foundation work, duct work, insulation work, electrical wiring, power source switch, and
other items shall be referred to the Installation Manual.

Water flow rate 1.93m3/h
* Install the unit in an environment where the
wet bulb Temp. will not exceed 32degC. * The unit is not designed for outside installations.

* Please do not use it as a drinking water. * Please do not use groundwater and well water.

PWFY-P200VM-E-AU

12.5
10,800
42,700

0.015

11.2

9,600

38,200

0.015

PURY-EP400YSHM-A(-BS)~PURY-EP600YSHM-A(-BS)

29

PT3/4 Screw
PT3/4 Screw

ø32 (1-1/4") ø32 (1-1/4")

NO

35 (78)

0.6~2.15

4.15

1.00

WKB94L763

E00C223

NONE

PUHY-EP400YSHM-A(-BS)~PUHY-EP900YSHM-A(-BS)

Strainer, Connecter, Heat insulation material, 2 ✕ Connector sets, Expansion joint

1-phase 220-230-240V 50/60Hz

-20~32˚C (-4~90˚F) PURY - series

-20~15.5˚C (-4~60˚F) PUHY - series

-5~43˚C (23~110˚F) PURY - series

-5~43˚C (23~110˚F) PUHY - series

50~100% of outdoor unit capacity

PURY-P200YHM-A(-BS)~PURY-P400YHM-A(-BS)
PURY-P450YSHM-A(-BS)~PURY-P800YSHM-A(-BS)
PURY-EP200YHM-A(-BS)~PURY-EP300YHM-A(-BS)

PUHY-P200YHM-A(-BS)~PUHY-P450YHM-A(-BS)

PUHY-P500YSHM-A(-BS)~PUHY-P1250YSHM-A(-BS)

PUHY-EP200YHM-A(-BS)~PUHY-EP300YHM-A(-BS)

800 (785 without legs) ✕ 450 ✕ 300

31-1/2" (30-15/16" without legs) ✕ 17-3/4" ✕ 11-13/16"

Installation Manual, Instruction Book

25.0
21,500
85,300

0.015

0.068 - 0.065 - 0.063

10~40˚C (50~104˚F)

22.4
19,300
76,400

0.015

0.068 - 0.065 - 0.063

10~35˚C (50~95˚F)

29

ø9.52 (ø3/8") Brazed

ø19.05 (ø3/4") Brazed

PT 1 Screw
PT 1 Screw

NO

38 (84)

1.2~4.30

4.15

1.00

WKB94L763

E94C228X01

NONE

Unit converter

kcal = kW ✕ 860
BTU/h = kW ✕ 3,412
cfm = m3/min ✕ 35.31

lb = kg / 0.4536
* The specification data is subject
to rounding variation.

3 4

2-1

Comparison among Booster unit, HEX unit, gas/oil boilers, and electric heaters

System
outline

System
structure

Gas/oil boiler

Heats water using the energy
released by combustion.

Water supply

Hot-water supply

Gas, oil etc.

Combustion chamber

Exhaust
gas

CO
NOx

2

Electric heater Booster unit HEX unit

Heats water by immersing an electric
heater inside the water tank, which
directly heats the water.

Hot-water supply

Hot-water cylinder

Heater

Water supply

By utilizing waste heat from the R2 outdoor
unit for the booster unit, it is possible to
supply hot water with high efficiency
operation.

Booster Unit for R2Trans Flux type

CITY MULTI

R2

series

Outdoor

BC controller

COMP

Indoor

unit

Hot water
supply

Water supply

By Utilizing waste heat from the R2 outdoor
unit for heating operation in HEX unit, it is
possible to supply hot water with high
efficiency. (No efficiency when in cooling or
connected with Y series)

HEX unit for Y/R2

Hot water
supply

Water supply

CITY MULTI

R2

series

Outdoor

BC controller

Indoor

unit

Safety

Energy
saving

CO2
emission

Operation involves combustion. Due to
special requirements, a boiler room is
necessary. Proper installation is required
to ensure safe operation, i.e.ventilation.
Due to high voltage, careful handling
and installation of power lines are
required.

Only consumes energy at the time
and place where it is needed.
Continuous running of the system
required to keep load of buffer tank.
Efficiency is low as COP of 1, as part
of the embedded energy is lost
through exhaust and emission
losses.

CO2 and NOx may generate at the
installation site. The volume will be
larger than an electric system.

Relatively safe. Due to high voltage,
careful handling and installation of
power lines are required.

Only consumes energy at the time
and place where it is needed.
Consumed energy is entirely
converted into effective heat at the
point of use.
Efficiency is low as COP of 1, as part
of the embedded energy is lost
through exhaust and emission losses.

2 and NOx will not generate at

CO
the installation site.

Relatively safe. Due to high voltage, careful
handling and installation of power lines are
required.
If refrigerant leaks, there is a possibility of
suffocation.

Highly efficient, as it utilizes waste heat from
cooling to supply hot water.

2 and NOx will not generate at the

CO
installation site.

Relatively safe. Due to high voltage, careful
handling and installation of power lines are
required.
If refrigerant leaks, there is a possibility of
suffocation.

Highly efficient, as it utilizes waste heat from
cooling to supply hot water.

CO2 and NOx will not generate at the
installation site.

Maintenance

Regular maintenance and chimney
sweeping required.
Remote operation and monitoring is
possible.

Easy maintenance, no chimney sweeping,
no purging of the pipes. Remote operation
and monitoring is possible.
May require regular replacement of

Easy maintenance, no need for regular
servicing by an expert, no chimney
sweeping, no purging of the pipes. Remote
operation and monitoring is possible.

Easy maintenance, no need for regular
servicing by an expert, no chimney
sweeping, no purging of the pipes. Remote
operation and monitoring is possible.

electric heater.

5 6

2-2

Proposal examples/Application examples

Restaurant

HEX unit

From Outdoor Unit

Hot Water

Outdoor Unit

Heating / Cooling

Fan coil units
Panel heaters
Floor heating

Residence

HOT water up to 45˚C
Easy operation by remote

controller
Both hot and cool water available.

(Depends on outdoor unit’s
operation mode)

Heating/Cooling

Hot water up to 70˚C
High COP operation with heat recovery

technology
High COP operation with double inverter

technology

From Outdoor Unit

Booster unit

Healthcare facilities   Hotels        Hospitals   Factories   Gyms   
Supermarkets  Apartments     Restaurants   Offices

7 8

2-3

Selecting a model

(1) Model selection calculation (2) Model selection calculation example

A

A. For Air conditioning using such as Panel Heaters,

. For Air conditioning using such as Panel Heaters,

Floor Heating and Fan coil units

Required total heating capacity kW
Safety factor; %

B. For Sanitary use such as Shower and Bathrooms

Conditions

Tank inlet water Temp.; °C
Tank outlet water Temp.; °C

(Set Temp -5 °C)
Safety factor for Heat Loss; %
Operating time; Hours
For Shower; /Person x Person =

(Water Temp. Condition °C)

For Bathrooms; /Person x Person =

(Water Temp. Condition

PWFY unit

°C)

Tank

Floor Heating and Fan coil units

Required total heating capacity 20

4

7

3 3

3

For Shower; 60 /Person x Person =

(Water Temp. Condition °C)

For Bathrooms; 8 /Person x Person =

(Water Temp. Condition

3

B. For Sanitary use such as Shower and Bathrooms

20

30

Safety factor; %

Conditions

Tank inlet water Temp.; °C
Tank outlet water Temp.; °C

[ (Set Temp) -5°C ]
Safety factor for Heat Loss; %
Operating time; Hours

1,200

40

240

45

°C)

10

10
60

15

8

kW

(The examples of water volume might be need to be changed as you need.)

The conversion of water volume to °C

x(
+x( - )/( -)
= /day

Heating Capacity Calculation for sanitary usage

/

1,000 x ( - ) = M cal / day

The conversion of M cal to kW

/ 860 x 1,000 /

C.

Total (A+B)
Total Heating Capacity

(100%

x

D. No. of units required

Safety factor; %

(100%

+

+x

-

=kW

%) +

%) / 12.5 kW = units

)/( - )

x (100% %) = kW

+

(The examples of water volume might be need to be changed as you need.)

The conversion of water volume to °C

1,200

+x( - )/( -)

240

= /day

888

Heating Capacity Calculation for sanitary usage

888

The conversion of M cal to kW

44.4

Total (A+B)

C.

Total Heating Capacity

20

D. No. of units required

Safety factor; %

29.42 20

x(

/1,000 x ( - ) = M cal / day

/ 860 x 1,000 /

x (100%

20

(100%

40
45

60 44.4

+

10

+x

60

-

8 6.45

%) +

%) / 12.5 kW = units

10
10

10

=kW

6.45 15 29.42

)/( - )

x (100% %) = kW

2.82

+

60
60

10
10

units are required

9 10

3

units are required

3-1

Control design for Booster unit and HEX unit

Function

Item Description Operations Display

ON/OFF Runs and stops the operation of a group of units

Operation mode switching ❈ Available operation modes vary depending on the unit to be connected.
❈ Switching limit setting can be made via a remote controller.

Water temperature setting

Preset temperature range limit Preset temperature range setting can be limited via a remote controller.

Water temperature display (in increments of 1˚C or 1˚F)

Permit / Prohibit
local operation

Weekly scheduler
Error When an error is currently occurring on a unit, the afflicted unit and the error code are displayed.

Self check (Error history) Searches the latest error history by pressing the CHECK button twice.
Test run

Circulating water
replacement warning

Language setting

Operation locking function ·All-switch locking

Switches between Hot Water / Heating / Heating ECO / Anti-freeze / Cooling

Temperature can be set within the ranges below. (in increments of 1˚C or 1˚F)

Hot Water 30 / 35 / 40 / 45˚C min. ~ 30 ~ 70˚C
Heating (in increments of 1˚C or 2˚F)
Heating ECO Temperature within the following range can be set depending on the outside air

temperature. 30˚C min. ~ 45˚C max.
Anti-freeze 10˚C min. ~ 45˚C max. (in increments of 5˚C or 10˚F)
Cooling 10˚C min. ~ 30˚C max. (in increments of 5˚C or 10˚F)

❈ The settable range varies depending on the unit to be connected.

10˚C min. ~ 90˚C max.

❈ The settable range varies depending on the unit to be connected.

Individually prohibits operations of each local remote control function :ON/OFF, Operation modes,
water temperature setting, Circulating water replacement warning reset.

❈ Upper level controller may not be connected depending on the unit to be connected.

ON / OFF / Water temperature setting can be done up to 6 times one day in the week.
(in increments of a minute)

Enables the Test run mode by pressing the TEST button twice.

❈ Test run mode is not available depending on the unit to be connected.

Displays the circulating water replacement warning via the unit message.
Clears the display by pressing the CIR.WATER button twice.

❈ Circulating water replacement warning is not available depending on the unit to be connected.

The language on the dot matrix LCD can be changed. (Seven languages)
English/German/Spanish/Russian/Italian/French/Swedish
Remote controller operation can be locked or unlocked.

·Locking except ON/OFF switch

Control priorities

1. External input signal 2. Centralized controller 3. Remote controller

Heating ECO mode

Set temp.

Tf12

Tf11

Initial setting

Tf11
Tf12
Ta11
Ta12

Booster/Hex unit icon shown on
AG-150A and TG-2000A screen

(Dip SW4-3 ON)

Ta11

30˚C
40˚C

0˚C
10˚C

Remote Controller :

PAR-W21MAA

Heating ECO is for energy saving.
When this function is effective, outlet water
temp. will automatically change based on
ambient temp. Contribute to energy saving
by controlling capacity especially in cases
where ambient temp. is high and there is low
demand for hot water or heating.

Ta12

oudoor temp.

Possible to change by remote
controller <PAR-W21MAA>

Output/Input Functions

TB141A (Output)

Symbol

OUT1
OUT2
OUT3
OUT4

TB142A (Input)

Symbol

IN1

TB142B (Input)

Symbol

IN3
IN4

TB142C (Input)

Symbol

+

COM

IN5
IN6
IN7

❈

IN8

Analog input

Symbol

CN421
CN422

Function
Operation ON/OFF
Defrost
Compressor
Error signal

Function
Pump interlock No setting when shipped from factory. ON=in operation. OFF=invalid.

Function
Connection demand
Operation ON/OFF

Function
Common
Hot water/Heating
Heating ECO
Anti-freeze
Cooling

Function
Set water temperature
Set water temperature

Outputs the ON/OFF signal
Outputs the Defrost signal
Outputs the Compressor signal
Outputs the Error signal

Mandatory STOP with demand input ON
For external ON/OFF operation.

Common wiring
Hot water operation
Outlet water temp. will automatically change based on ambient temp.
Unit will atutomatically maintain set water temp.
Cooling operation

❈ HEX unit only

Capable with accessory connector
Capable with accessory connector

❈ CN421 priority

Anti freeze mode (Dip SW4-4 ON)

Anti freeze mode is to prevent
water pipe from freezing.
When this function is effective,

Control

Box

Measurement
point of

Operation signal

Pump interlock

Water Temp.
is available to
choose by
Dip SW1-1

Strainer

Water Pump

Water temperature is changeable by remote controller <PAR-W21MAA>

the unit will automatically
maintain set water temp. (Field
supply control board for water
pump operation necessary.)

Broken lines are field
supply products.

11 12

4-1

Installation

The unit must be installed inside a building. The unit is not designed for
outdoor installation.

For water pipes, do NOT use steel pipes. Copper pipes are
recommended.

Drain pipe

Install the drain pipe with an inclination of between 1/100 and 1/200 to provide a downward
flow of drain water.For cold climate installation, take an appropriate measures (e.g., drain
heater) to prevent the drain water from freezing.

Strainer

Install a strainer near the PWFY unit to keep foreign materials from entering the water-side
heat exchanger.

Do not touch the unit, the unit surface can be hot.

Back up system is recommended in case of PWFY unit breakdown.

Service space

Top view

400525

Piping space (right side)

Installation image

Wall mounted Ceiling Suspended

Floor standing

Hot-blast
up to 55°C

Service space
(front side)

Example of Water pipe installation

Solid arrows in the figure indicate the direction of water flow.

Mains water

PWFY

Water-side
heat exchanger

13 14

Field supply

T

T

PWFY

Water overflow

To drain outlet

P

P

Sample of water circuit for HWS/ATW

P

300

600

Roof

Tank Outlet

Inlet

Unit [mm]

R2

PURY-P400YHM-A

BC controller

PWFY-P100VM-E-BU PWFY-P100VM-E-BU PWFY-P100VM-E-AU PEFY-P32VMR-E-R PEFY-P63VMS1-E

* Note: If any medicinal substance is used for Heating (AHU, FCU, Floor Heating, etc), part the water circuit for sanitary use.

PWFY

PWFY

Counter flow water circuit

We have no regulation for water flow way. Therefore customers can choose
either counter flow or parallel flow due to their demand.

Cold Water Tank

Hot Water Tank

Cold Water Tank

Hot Water Tank Hot Water Tank

PWFY

PWFY

Parallel flow water circuit

Cold Water Tank

Water Supply

For Cooling
(AHU, FCU, etc)

For Heating
(AHU, FCU,
Floor Heating, etc)

Water Supply

For Sanitaty use
(Shower, Bath, etc)

5-1

Q & A

5-1

Booster unit/HEX unit Specification and function Booster unit/HEX unit Specification and function

Q & A

Q1

Q2

Q3

Q4

Q5

Q6

Q7

What kinds of compressors are used in Booster unit?

Mitsubishi Electric Rotary compressors

What is the temperature range on controller for heating?

Booster unit:35˚C-70˚C (95F-158F)
HEX unit :30˚C-45˚C (86F-113F) (Heating)
HEX unit :10˚C-30˚C (50F-86F) (Cooling)

What is the hydraulic pressure?

1.0MPa (Maximum range)

Is the water pump embedded?

Water pumps are field supplied and need to be selected depending on field system.

How do you interlock the pumps?

TB142A

Short circuiting of TB142A will start the unit
and opening of circuit will stop operation. (non­voltage A contact)

IN1

What are the new technologies?

Booster units and HEX units operate on high COP with heat recovery function (with
R2 system). Booster unit is able to supply high temperature hot water up to 70˚C
without electric heater.

What is Anti-freeze?

Anti-freeze mode (Dip SW3-4 ON) to prevent water pipe from freezing. When Anti­freeze mode is effective, the unit will sustain set water temperature. The field supply
control board for water pump interlock is necessary.

Q9

External analog input

Method

Input T(A), T(B)
4mA :T(A)

20mA:T(B)

Conversion equation:To=[{T(B) - T(A)}/16] ✕ Ia + [ T(A) - {T(B) - T(A)}/4]
To: set temperature, Ia: analogue input value (mA)

Calculation example: T(A)=30˚C, T(B)=70˚C, Ia=10mA
Conversion equation: To=2.5 ✕ Ia+20 To=45˚C

Q10

Remote controller specifications

What is external analog input?

T(B)˚C

Changeable with
PAR-W21MAA

T(A)˚C

4mA 20mA

What are the functions with the controllers?

Item Description

ON/OFF

Operation mode switching

Water temperature setting

Preset temperature range
Water temperature display

Permit / Prohibit
local operation

Weekly scheduler

Error
Self check (Error history)
Test run

Circulating water
replacement warning

Language setting

Operation locking function

Runs and stops the operation of a group of units
Switches between Hot Water / Heating / Heating ECO / Anti-freeze / Cooling

* Available operation modes vary depending on the unit to be connected.
* Switching limit setting can be made via a remote controller.

Temperature can be set within the ranges below. (in increments of 1˚C or 1˚F)
Hot Water 35˚C min. ~ 70˚C max. (in increments of 1˚C or 2˚F)
Heating 30˚C min. ~ 45˚C max. (in increments of 1˚C or 2˚F)
Anti-freeze 10˚C min. ~ 45˚C max. (in increments of 1˚C or 1˚F)
Cooling 10˚C min. ~ 30˚C max. (in increments of 1˚C or 1˚F)

* The settable range varies depending on the unit to be connected.

Preset temperature range setting can be limited via a remote controller.
10˚C min. ~ 90˚C max. (in increments of 1˚C or 1˚F)

* The settable range varies depending on the unit to be connected.

Individually prohibits operations of each local remote control function :ON/OFF,
Operation modes,water temperature setting, Circulating water replacement
warning reset.

*

Upper level controller may not be connected depending on the unit to be connected.
ON / OFF / Water temperature setting can be done up to 6 times one day in the week.
(in increments of a minute)
When an error is currently occurring on a unit, the afflicted unit and the error code
are displayed.
Searches the latest error history by pressing the CHECK button twice.
Enables the Test run mode by pressing the TEST button twice.

* Test run mode is not available depending on the unit to be connected.

Displays the circulating water replacement warning via the unit message.
Clears the display by pressing the CIR.WATER button twice.

* Circulating water replacement warning is not available depending on the unit to

be connected.
The language on the dot matrix LCD can be changed. (Seven languages)
English/German/Spanish/Russian/Italian/French/Swedish
Remote controller operation can be locked or unlocked.

.

All-switch locking . Locking except ON/OFF switch

S/W default

T(A)=10˚C
T(B)=70˚C.

*All setting with a controller.

la

Operations

Display

Q8

What is heating Eco?

Heating ECO (Dip SW4-3 ON) is an energy saving function. When this mode is
effective, the outlet water temperature will automatically change based on ambient
temperature.

15 16

5-1

Q & A

5-1

Booster unit /HEX unit Specification and function Booster unit /HEX unit Specification and function

Q & A

Q11

Refer to the table below for the maintenance schedule.
Replacement cycle may be shortened depending on the usage.

What is the durability of Booster unit and HEX unit?

Refrigerant circuit

Water circuit

Components

Compressor
Solenoid valve
Check valve
Linear expansion valve
Strainer
Pipes
Sensor (Temperature sensor, Pressure sensor)
Pressure switch
Drain pan
Electronic board

Strainer
Water pipe
Water-side heat exchanger
Refrigerant-side heat exchanger

Replacement cycle

20,000 hours
20,000 hours
20,000 hours
20,000 hours
20,000 hours
20,000 hours

25,000 hours

25,000 hours

20,000 hours

5 Years

8 Years

10 Years

5 Years
5 Years

Q16

Even if the total connectable capacity is 100% or more, PWFY is only connectable
within 100%.

What is the connectable capacity when connecting with
standard indoor units? And what is the temperature range of
operation for outdoor units?

Ambient (outdoor) temperature range of heating mode for PWFY combination (WB)

Only PWFY

R2 series

Y series

Outdoor unit will change its software to PWFY connection version automatically when PWFY is connected.
R2 series allows a higher temperature range than Y series, the reason is that R2 has an effective heat exchanger bypass circuit
against high-pressure error.
(*1) Some cooling operated by standard indoor units is necessary against high-pressure error, if standard indoor units are to be
worked near the high temperature range (32˚C or less).

Connectable outdoor unit capacity range for PWFY combination (WB)

R2 series

Y series

-20~32˚C

-20~15.5˚C

Only PWFY

50~100%
50~100%

PWFY with

standard indoor units

-20~32˚C (*1)

-20~15.5˚C

PWFY with

standard indoor units

50~150%
50~130%

Only standard

indoor units

-20~15.5˚C

-20~15.5˚C

Only standard

indoor units

50~150%
50~130%

Connectable

PWFY type

BU, AU

AU

Connectable

PWFY type

BU, AU

AU

Q12

Booster unit :10˚C~70˚C
HEX unit :10˚C~40˚C (Heating)

10˚C~35˚C (Cooling)

Q13

Even when the outdoor temperature is low, water temperature of supplied hot water
will not decrease.

Q14

Yes, it will be shown on the controller display.

Q15

What is the water temperature operation range?

Will the temperature of the hot water decrease during winter?

In case of malfunction, will the controller show an error?

Can HEX unit/Booster unit be connected to standard indoor units?

OK R2 + (PWFY: 100%) + (Standard indoor units: 50%) = 150%
NG R2 + (PWFY: 130%) + (Standard indoor units: 20%) = 150%

Q17

R2 outdoor units have a stronger tolerance for high-pressure error when heating
compared to Y series.

Why can the R2 outdoor units operate at an outdoor
temperature of 32˚C when connecting with Booster unit ?

Yes, it can be connected to the standard indoor models.

17 18

5-2

Q & A

Booster unit/ HEX unit Installation and service

5-2

Q & A

Booster unit/ HEX unit Installation and service

Q1

Q2

Q3

Q4

Are there any regulations to installation location?

The HEX unit/Booster unit can only be installed indoors.

Is it possible to operate a multiple number of units at the
same time?

Controller: Possible with MA wiring.
Output: Possible with setting sequence relay on site.

Is a drain pipe required?

Yes. For condensation caused by inlet water temperature.

Is it possible to use ground water?

No. Ground water, rain, and sea water cannot be used.

Q8

Q9

Is the hot water suitable for drinking?

No, we do not recommend hot water for drinking.
The hot water is circulating and not supplied for drinking purposes.

What are the considerations when setting address?

Do not group Booster unit and HEX unit together.

OSOC

# #

TB3

TB3

BC

TB02

#!

TB5



Booster

TB5



TB15

HEX

TB5

!

TB15

Q5

Q6

Q7

Can a unit be directly connected to mains water?

The water circuit must be a closed circuit. (to prevent scaling of pipes, heat
exchanger etc. )

What materials are used for water piping?

Copper, stainless steel, polybuten and polyethylene water piping can be used. (it
must withstand 90˚C). Steel piping cannot be used.
If there is a possibility of steel usage in existing equipment, be sure to part the water circuit.

What is a recommended maintenance schedule?

For maintenance, sales offices will be able to handle replacements of functional
parts (compressor, heat exchanger, valves). Please refer to the Parts List.

BC

TB02

BC

TB02

#"

#$

TB5

TB5

$

"

W MA R/C W MA R/C

#

TB5

%

HEXHEX

TB5

TB15

TB5

&

TB15

W MA R/C

Transmission line

19 20

5-3

Q & A

Q & A

Sales

Q1

Q2

Q3

Q4

What applications are suitable?

It is best for facilities that require a large amount of hot water such as, healthcare
facilities, hotels, hospitals, sports facilities (gyms, golf courses) and restaurants.

How many people can the unit provide hot water for?

Hotels, healthcare facilities, and hospitals: 10-20 people/unit.
* It varies depending on the purposes. Refer to “2-3 Selecting a model” section for
calculation.

Can it be used for air conditioning and space heating?

Yes, it can be used for both applications.

Why is the running cost low?

Because of the high efficient heat pump and heat recovery technology.

Q5

What is the difference between ATW Booster unit & HEX unit
and electric heaters.

Booster unit and HEX unit COP is 3.0 or more and therefore the running cost is 1/3
compared to electric heaters.

21