Mitsubishi Heavy Industries ESA30E-25 Bedienungsanleitung

Manual No. '15tHM-T-246

TECHNICAL MANUAL

Air to Water Heat Pump

Including hot water recirculation system

Q-Ton

Natural refrigerant CO2water heater

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'15 • HM-T-246

CONTENTS

◦Service code history of ESA30E ...................................................................... 4

◦Service code history of RC-Q1E ...................................................................... 7

◦Software changes for units with service code / C ......................................... 8

1. GENERAL DESCRIPTION ............................................................................... 9

1.1 Mechanism of CO2 heat pump water heater for commercial use ............... 9

1.2 As for hot water storage unit ...................................................................... 10

1.3 CO2heat pump water heater: Operation chart ........................................... 11

1.4 Feature of natural refrigerant CO2 .............................................................. 12

1.5 Relation between recirculation load and cylinder volume .......................... 15

2. SPECIFICATIONS .......................................................................................... 18

2.1 Speciﬁcations of product ............................................................................ 18

2.2 Exterior dimensions ................................................................................... 29

2.3 Inner structure ............................................................................................ 30

2.4 System diagram ......................................................................................... 33

2.5 Electrical wiring .......................................................................................... 34

2.6

Heating system performance charcteristics for the operation to top up with recirculation loop

.... 35

2.7

Performance correction method by the effects of outdoor relative humidity

..... 49

2.8 Operation sound ........................................................................................ 50

2.9 Control ....................................................................................................... 52

2.10 Technical infromation of European regulations ......................................... 64

(1) Lot2 ......................................................................................................... 64

(2) Lot11 (Grandless circulators) .................................................................. 67

3. APPLICATION DATA ..................................................................................... 69

3.1 Installation work for heat pump water heater ............................................. 69

(1) Before installation ................................................................................... 72

(2) Installation location (Obtain approval from the customer

when selecting the installation area) ....................................................... 78

(3) Carrying in and installation of unit ........................................................... 80

(4) Water piping work ................................................................................... 81

(5) Insulation work ........................................................................................ 86

(6) Electrical wiring work for the heat pump water heater ............................ 88

(7) Electrical wiring work for the unvented cylinder ...................................... 93

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'15 • HM-T-246

(8) Control setting ....................................................................................... 101

(9) Anti-legionnaires’ disease control ......................................................... 106

(10) Connection to existing cylinder ........................................................... 109

(11) Commissioning and handover .............................................................. 110

(12) Inspection report ................................................................................... 111

(13) Notabilia for servicing (for CO2heat pump water heater) ..................... 113

(14) The behavior after power recovery ....................................................... 114

3.2 Installation work for remote control .......................................................... 115

(1) Safety precautions ................................................................................ 115

(2) Accessories & parts prepared at site .................................................... 116

(3) Installation place ................................................................................... 116

(4) Installation and wiring work ................................................................... 117

(5) Main/Sub setting when more than one remote controls are used ......... 119

(6) Power source and initial setting ............................................................ 120

(7) Installation settings and test run ........................................................... 121

(8) User environment (Simpliﬁed setting for operation pattern) .................. 123

(9) R/C function settings ............................................................................. 124

(10) Service & maintenance ......................................................................... 125

3.3

Setting and operation modes for unvented cylinder and conﬁguration of master-slave units

.... 127

3.4

Design guidelines for CO2heat pump water heater with under ﬂoor heating and water recirculation

......... 131

3.5 External input and output ......................................................................... 135

3.6 Guideline for indoor installation of CO2heat pump water heater ............. 141

4. SERVICING ................................................................................................... 145

4.1 General description of servicing ............................................................... 145

4.2 Error code list ........................................................................................... 155

4.3 Troubleshooting ....................................................................................... 158

4.4 Component replacement as a guide ........................................................ 194

4.5 Disassemble and reassemble method ..................................................... 195

4.6 Cleaning procedure of CO2water heater gas cooler ............................... 215

4.7 Method of draining water from gas cooler ................................................ 220

4.8 7-segment display and compressor stop factor ....................................... 225

4.9 Compatibility table for water pump ........................................................... 232

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'15 • HM-T-246

4.10

How to reset the accumulated water pump and compressor operating time ........

233

4.11 Reference for control PCB replacement ................................................ 234

4.12 Operation start/stop condition ................................................................ 234

4.13 Power off in a system with multiple units ............................................... 235

4.14 Additional information for cylinder temperature sensor connection ....... 237

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'15 • HM-T-246

Adaptation with Service Code A Adaptation with Service Code B Adaptation with Service Code C

Adapted to the E U E rp Directive

(Lot 2, Lot 11)

Adapted to MSC, UK

1. E xpansion of the width of fork inserts

for fork lift truck 1. Changed the fan guard pitch.

(For adaptation to the revised LV D

Directive)

1. Changed the water pump to a high

efficiency model. (For adaptation to

the E rP Directive)

(N ew and old specifications are

compatible with each other.) Increased the number of fun guard wires,

and reduced the mesh size in order to

protect children’s fingers.

SSA451A010A ⇒SSA451A010B

E xpanded the width of fork inserts

provided at the base of heat source unit.

50mm x 180mm ⇒60mm x 230mm 2. Changed the size of letters on the

nameplate. (For adaptation to the

revised LV D Directive)

2. Changed descriptions on equipment

nameplates. (For adaptation to MCS, UK.)

Changed the size of letters on labels

attached to the heat source unit to

2.8mm or more (Capital letters)

Added new items and certification marks,

and changed the label size for adaptation

to MCS, UK.

2. Changed the mounting position of

intercooler. 160mm x 100mm ⇒210mm x 100mm

(N ew and old specifications are

not compatible with each other.)

3. Adaptation of warning label marks to

international standards

P CM303A011 ⇒P CM303A011A

Unified warning label marks attached to

the heat source units to those compliant

to international standards.

3. Improved the rustproof property

P ainted external panels (Base plate,

drain pan and heat exchanger clamp),

and added a cover to the water pump,

in order to enhance the rustproof property.

4. Structure of front service panel hook

In order to prevent the front service

panel from dropping off in the event

threads on the panel are dented, it has

been changed to secure the panel with hooks.

4. Changed the air vent valve specification

Added a handle to the air vent valve to

improve the serviceability.

5. Changed the anti-freeze heater capacity.

Total 352 W ⇒Total 191 W

(P arts changed)

・Front panel

・Side panel

・Upper panel

・Frame

・Fin guard

Software

version WCMC-1, 384 WCMC-1, 609 WCMC-1, 813

Compatibility See above. See Compatibility list Table1.See Compatibility list Table2.

N ewly adapted

regulation −Adapted to the revised E U LV D

Directive (2006/95/E C)

Service code history of ESA30E

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'15 • HM-T-246

Parts compatibility

Table1. OK or N O for mounting parts in the specification category A to the specification category B

○：for OK to mount

×：for N O

Application to

Specification category B

Table2. OK or N O for mounting parts in the specification category A to the specification category A

○：for OK to mount

×：for N O

It has brackets to hook the front panel, but it can be

mounted. It is, however, limited to the front side only.

Front panel R：P CB122A122 ×

Front panel in Category B has hooks so that

it cannot be mounted on conventional models.

L：P CB122A122A ×

P CB131A042A ○

Frame P CB115A116B ○

P arts in category B

Fan guard P CB131A041 ○

Appearance is changed. (Mesh size of fan guard

in Category B is smaller than that in Category A.)

Side panel R：P CB123A090N ○

L：P CB123A090P ○

Fin guard P CB131A042 ○

Appearance is changed. (Fin guard in Category

B has the base section shorter by 5 mm after

the structural change to hook the front panel.)

Frame P CB115A116 ×

Frame in Category A has not brackets to hook

the front panel so that it cannot be mounted.

Item P art N o.

Application to current model

(Specification category A)

Remark

Fin guard P CB131A030 ×

Base section of fin guard in Category A is

5 mm longer. This makes difficult to remove

the front panel so that it cannot be mounted.

P CB131A030A

Front panel R：P CB122A091 ○

L：P CB122A091C ○

Item P art N o. Remark

P arts in category A

Fan guard P CB131A025A ○

Appearance is changed. (Mesh size of fan guard in

Category A is larger than that in Category B.)

Side panel R: P CB123A090D ×Side panel in Category B has hooks to

hold the front panel. Conventional parts

without the hooks cannot be mounted.

L: P CB123A090F ×

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'15 • HM-T-246

Table3.

Compatibility of spare parts relative to the specification categories C.

Current model N ew model

(Adapted to E rP ) Remark

E SA30E-25/B E SA30E-25/C

P CM003A012 P CM003A017

SSA451A010A SSA451A010B △ ※1 ×

・Cannot ship current SSA451A010A to

E urope after 1/8/2015.

・There is no problem for shipments to

South Korea.

P CM505A008 

Detail DWG N o.: P CM505A007AA Detail DWG N o.: P CM505A007AB

[Conditions]

*1: It can be replaced at site if a pair of water pipes are changed to

P CM421A001A and 011A, and 2 sets of socket (P CM422N 011)

and O ring (P CM925C002A) are provided.

*2: If any error occurs in the master slave communications after

replacing the P CB, it can be solved by using P SZ 008A022



N ame

Type

E /I

Water pump

Spare P CB ○ ○ ※2

Compatibility

N ew spare parts

to current model Current spare parts

to new model



N o



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'15 • HM-T-246

Service code history of RC-Q1E

Service code of the CO2water heater remote control RC-Q1E is changed to A from May 2015 after

arrangements to improve specifications and to add new functions.

Major changes are as listed below.

Item Adaptation with service code / A

Hardware

Appearance

・Design

・Touch screen, etc. N o change from current models.

P acking nameplate ・Added the description “service code / A”.

・P acking size is not changed.

Additional

function

Setting of upper

limit temperature for

hot water in the cylinder



Added Upper limit setting of HW temp to the Administrator settings

menu, and enabled to set the upper limit temperature at 70 – 90℃.

It can be selected Usual ⇔Set 1 ⇔Set 2 by selecting

R/C function settings ⇒ HW amount display setting from the

Administrator settings menu.

LE D lights always if it is operated with the Run/P ause switch after

selecting Operation lamp setting from the Administrator settings menu.

E xample)

If the upper limit temperature at 80℃, the range of hot water temperature

that the user can set becomes 60 – 80℃. This is a measure to cope with

the problem of water quality at site likely to cause clogging.

Designs of the hot water

amount graph are

selectable.



Multiple language French and South Korean language can be used.

Improved

specifications

Deleted

More information Deleted from the display items because the More information

function is not provided.



and select E rror history or Maintenance code history ,

you can view these histories.

Added

Save HP Unit setting

Added following items to the save data in the Save HP unit setting operation.

・Flow regulating valve aperture correction value

・Initial setting operation status

・N umber of hermetic tank temperature sensors

・Hot water amount judgment differential value

・Upper limit of hot water temperature in the tank

N ote) Conventional save data (Hot water temperature in the tank,

heat-retention temperature, etc.) are saved in the same way.

Histories of error codes

(E N o.) and maintenance

codes (M N o.) can be

displayed separately.



N ote 1) Functions indicated in the rectangular frame (E x: Menu ) are items selectable on the LCD display,

by touching the screen.

For details, refer to the installation manual P JZ 12D103 and the instruction manual P JD012A111.

N ote 2) N ew and old remote controls are compatible with each other. It is compatible also between new and old heat

source water heaters (Service codes / 1, A, B and C).

Setting of LE D lamp

lighting

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'15 • HM-T-246

4PGUXBSFDIBOHFTGPSVOJUTXJUITFSWJDFDPEF$

Software WCMC-1.813 is upgraded with changes and additions as described hereafter.

Item Changes

New defrost control

In order to shorten the defrost time, the new defrost control improves operation of

①E lectric E xpansion V alve (E E V ) control

②Water pump control

In the case of outside air temperature above -5℃, the water

pump is stopped during defrost operation.

Limited unit control

In the case of master - slave system, power input and therefore also capacity output, can be

controlled by reducing the number of heat pump water heaters running.

Refer to page 152 for the setting method.

All units defrost

All the heat pump water heaters connected in a master - slave configuration can be

symchronise to perform defrost at the same time.

This avoids some adjacent units to recirculate cold air during defrost, while others

are still running on top up or fill up operation.

Refer to page 152 for the setting method.

External output of hot

water amount

An external output signal can be sent out when the hot water amount has reached

a set point programmed by the user using the schedule setting.

This allows better interaction with external heat sources.

Refer to page 153 for the setting method.

Checking of

operations of CWFV 3

When SW5 -3 is on, the opening and closing check of electric water

valve CWFV 3 and 5were attained in OFF ⇔ON of SW6-7.

Refer to page 154 for the setting method.

AMP Air Conditioning

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'15 • HM-T-246

1. General description

1.1 Mechanism of CO2heat pump water heater for commercial use

• The CO2heat pump water heater for commercial use is a water hater that is composed of a heat pump unit with natural

refrigerant such as CO2which can produce hot sanitary water with heat pump technology and a hot water storage unit which

can store hot water. A touch panel type remote control applied to this heat pump water heater can control up to 16 units of

heat pump units.

• The way to produce hot water with this heat pump water heater is that the heat energy retrieved from the outdoor air

through the air to refrigerant heat exchanger of heat pump unit heats up the refrigerant and such refrigerant is increased its

temperature and its pressure much higher through the compressor and is transferred to the gas cooler (the refrigerant to water

heat exchanger). In the gas cooler, the refrigerant releases its heat to increase the water temperature and is returned to the air

to refrigerant heat exchanger after depressurized through expansion valve in order to evaporate easily.

On the other hand, the water stored in the hot water storage unit is circulated by the water circulation pump to the heat pump

unit through the connection pipe between the hot water storage unit and the heat pump unit. In the gas cooler, the water

exchanges the heat from the high temperature refrigerant and is heated up to higher temperature. Such hot water is returned

to the hot water storage unit and stored in the hot water storage unit.

The hot water in the hot water storage unit is distributed to the end of hot water supply system for utilizing.

•The power actually consumed is the power supplied to the compressor, fan and water circulation pump only. However the

total energy added to produce hot water is the power actually consumed and the heat retrieved from the outdoor air so that





temperature 16℃DB/12℃WB, water inlet temperature 17℃and water outlet temperature 65℃。

 

Retrieve

heat from

the air

Supply

hot water

Heat pump unit Hot water storage unit

Water Circulation

pump

Compressor

Feed

water

Expansion

valve

ref.

cycle

Gas cooler

(for heating

water)

Heat exchanger

(cooled by air)

Retrieve

heat from

the air

Supply

hot water

Heat pump water heater Hot water storage unit

Water Circulation

pump

Compressor

Feed

water

Expansion

valve

ref.

cycle

Gas cooler

(for heating

water)

Heat exchanger

(cooled by air)

 



• It has following advantage.

Hot water at 90℃

The size of hot water cylinder can be minimized.

The storage of heat can be controlled by adjusting storage water temperature.

The hot water can be used for washing.

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