USER’S MANUAL ORIGINAL INSTRUCTIONS MITSUBISHI HEAVY INDUSTRIES, LTD. Natural refrigerant CO2 Heat Pump Water Heater ESA30E series Thank you very much for your purchasing the heat pump water heater for commercial use. This user’s manual describes cautions for safety. Please read this manual carefully before use in order to operate the unit properly. Keep this manual, after reading, at a safe place where you can consult it whenever it is necessary.
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Contents Before use …………………………… 2 Safety precaution ……………………………… Component replacement guide for maintenance check and preventive maintenance …………… Water quality criteria…………………………… General description of CO2 heat pump water heater … Description of functions and contents of CO2 heat pump water heater … Names and functions of sections on the R/C … Screen flow……………………………………… 2 10 11 12 14 16 18 Operation method of basic operation …… 20 Note ● In order to protect the heat pump unit, be sure to turn the p
■ Before use Safety Precautions ● Please read the precautions written here carefully to operate the unit properly. You are required to observe these fully because every item of these instructions is important for safety. Failure to follow these instructions may result in WARNING serious consequences such as death, severe injury, etc. Failure to follow these instructions may cause CAUTION injury, property damage or, serious consequences depending on. ● The following pictograms are used in the text. Never do.
WARNING Consider measures not to exceed the critical concentration of refrigerant in the event of leakage especially when the unit is installed in a small room. Regarding the measure not to exceed the critical concentration, please consult with our dealer. If the refrigerant leaks and exceeds the critical concentration, it may cause oxygen deficiency accident. Take care to protect terminal connections from external forces or stress caused by wiring.
WARNING Grounding work shall be done securely. Do not connect the grounding wire to a gas pipe, a water pipe, a lightening rod or a earth wire of telephone Improper grounding may cause, malfunction or electric shocks at electric leak. The earth leakage breaker should be installed If the earth leakage breaker is not installed, it may cause electric shocks. Please ask the dealer where you purchased it or the qualified specialist who installed it.
■ Precautions for usage WARNING Avoid using combustible substances (hair spray, insecticide, etc) near the unit. Do not use benzene or paint thinner to clean the unit. It could cause cracks, electric shocks or fire. Stop operation under abnormal situation. If continued, it could result in break-down, electric shocks, fire, etc. If any abnormal condition (burnt odor etc.) occurs, stop operation, turn off the power switch and consult your dealer. Stop operation when any anomaly is detected.
CAUTION Do not wash the remote control with water or liquid. It could cause electric shocks, fire or break-down. Do not touch electric parts or operate buttons or screens with wet hands. It could cause electric shocks, fire or break-down. Be sure to stop operation and shut down the circuit breaker before starting maintenance work. It could cause electric shocks or injury. The cleaning of the inside of cylinder shall not be done by yourself.
CAUTION Do not touch the aluminum fin of the heat exchanger with bare hands If touching, it may cause injury. Do not use benzene, paint thinner, wipes etc. to clean the remote control. It could discolor or break-down the remote control. Wipe it with a piece of cloth which is squeezed tightly after wetting with diluted neutral detergent. Finish up the cleaning by wiping with a piece of dry cloth. Do not pull or twist the cable of the remote control. It could cause break-down.
CAUTION Use clean water conform to the water quality criteria. (Refer to the criteria in page 7) Deterioration of water quality may cause malfunction of the unit and water leak. If a solid body, discolored water, impurity or unusual order is found, please ask inspection.
■ Precautions for relocation or maintenance WARNING Consult your dealer when moving, disassembling or repairing the unit. Never modify the unit. Improper handling may result in injury, electric shocks, fire, etc. If the unit is submerged due to the natural disaster such as flooding or typhoon, please consult with the dealer where you purchased. If starting operation of the unit, it may cause malfunction, electric shocks and fire. Do not use any refrigerant other than the specified refrigerant (CO2).
■ Before use Please implement a periodical maintenance check and a component replacement from a view point of preventive maintenance In order to maintain the safety and the function of the product, we would like to ask all customers owing this product to have a periodical maintenance and to replace components by our authorized servicing company.
Water Quality Criteria Makeup water and cyclic water shall be the water within the range of water quality criteria mentioned below. If water quality is out of the range of criteria, it may cause a trouble such as scale adhesion and corrosion. Cyclic water Item Standard items Reference items (60°C< ≦90°C) Makeup water pH (25°C) − 7.0−8.0 7.0−8.0 Electric conductivity (25°C) mS/m ≦30 ≦30 Chloride ion mgCL−/L ≦30 ≦30 Sulphate ion mgSO /L ≦30 ≦30 Acid consumption (pH4.
■ Before use General description of CO2 heat pump water heater 1. Composition of CO2 heat pump water heater This heat pump water heater for commercial use is a heat pump water hater that is composed of a heat pump unit with natural refrigerant such as CO2 which can produce hot sanitary water with heat pump technology and a hot water storage unit which can store hot water.
3. Operation pattern of CO2 heat pump water heater This heat pump water heater is operated with the target hot water amount set at each set time The typical operation pattern and setting items are explained with following figure. ③ In Pause by peak-cut timer ② Set hot water amount at each time Set hot water amount Actual hot water amount 100% 50% 0% 22:00 8:00 Operation 14:00 Operation Store hot water during the night time applied cheaper tariff.
■ Before use Description of functions and contents of CO2 heat pump water heater The following settings can be done with this remote control. Regarding the detailed setting methods, please check each function mentioning in reference page. Setting and display item Contents The heat pump unit can be started operation. The heat pump unit is operated according to the set operation pattern. Pause The heat pump unit can be paused operation.
Setting and display item Display of operation mode Initial settings Administrator settings · In operation for defrosting · In operation for peak-cut · Standby Clock setting Date and time display Contrast Backlight Controller sound Enable/Disable setting Night tariff setting HP unit selection RC display setting Step size of HW temp Contents Reference page The defrost operation is ongoing. Peak-cut rate is set. It makes the heat pump unit standby for starting operation.
■ Before use Names and functions of sections on the R/C (Operating section) ⑤ LCD display (With backlight) ③ switch ④ Operation lamp ① ② switch switch Touch panel system, which is operated by tapping the LCD screen with a finger, is employed for any operations other than the ①Run/Pause, ②Schedule setting and ③Operation to fill up switches. ① switch (Run/Pause switch) One push on the button starts operation and another push pauses operation.
Names and functions of sections on R/C (Display) * All icons are shown for explanation. ① Clock, RC name display ② Icon display ③ Menu button TOP screen ④ HW temp setting button ⑥ Usage of HW amount button W amount ⑤H display button (Set More or Less) ⑦ Message display ① Clock, RC name display ③ Menu button When setting other than the following items ④-⑦, tap the menu button. When menu items are displayed, select one and set it.
■ Before use Screen flow Top screen Run/Pause switch …………………………………… Refer to Page 21 Schedule setting switch …………………………………… Refer to Page 23 Setting of weekly operation pattern …… Refer to Page 24 Setting of day off ………………… Refer to Page 27 Setting of peak-cut ……………… Refer to Page 29 Checking of operation pattern …… Refer to Page 32 Operation to fill up switch …………………………………… Refer to Page 33 Hot water temp setting …………………………………… Refer to Page 22 Hot water amount setting …………………………………… Refer to Page 34 Dis
Main menu Installation setting Installation date …………… Company information ……… Test run ……………………… As for setting method, please refer to the installation manual. RC function settings Main/Sub of RC …………… External input ……………… Auto-restart ………………… As for setting method, please refer to the installation manual. Service & Maintenance No.
■ Operation method of basic operation Hot water operation method The heat pump unit is operated according to the setting of [Hot water temp], [Target hot water amount at each time zone] and [Hot water amount] set with remote control. [Explanation of hot water operation method] If the current HW amount is less than the target HW amount at current time zone, the heat pump unit is operated to top up.
How to Run/Pause 1. Run When push Run/Pause button during pausing, the [Operation acknowledge] screen is displayed. When tapping Yes , it starts operation. ■ If the current HW amount is less than the target HW amount, the heat pump unit start operation to top up. 2. Pause When push Run/Pause button during operating, the [Pause acknowledge] screen is displayed. When tapping Yes , it pauses operation. ■ In case of Pause, the heat pump unit does not operate to top up.
■ Operation method of basic operation Setting of HW temp for the operation to top up The HW temp for the operation to top up can be set as follows. 1. T ap the HW temp button on the TOP screen. 2. The menu screen of the [Setting of HW temp] is displayed. Tap the desired item. 1 2 ① Setting temp to top up ② Setting temp to warm up (Out of use) 3. If the multiple heat pump units is connected to the remote control, the list of heat pump units (Address No.) is displayed. Tap the [HP unit No.] to be set.
Schedule setting The operation schedule of the heat pump unit can be set. The setting of target HW amount at each time zone, the setting of day off and setting of peak-cut can be set. 1. Push the Schedule setting switch on the panel. 2. The menu screen of [Setting of schedule] is displayed. The summary of each menu item is as follows ① Setting of weekly operation pattern (☞ To 3) ② Setting of day off (☞ To 4) ③ Setting of peak-cut (☞ To 5) ④ Checking of operation pattern (☞ To 6) 3.
■ Operation method of basic operation How to set operation pattern The target HW amount at each time zone for each day can be set. 1. Push the Schedule setting switch on the panel. 2. The menu screen of [Setting of schedule] is displayed. Tap the [Setting of weekly operation pattern] 3. The selection screen of [Weekly timer] is displayed. Tap the item of setting day.
6. The [Checking of operation pattern] screen is displayed. When changing the setting contents, ① select the column of the setting No. to be changed ② and tap Change button. ■ The setting contents displayed at first may differ depending on the set day selected (☞ Go to 3) ① Weekdays: Set operation pattern on Monday ② Sat, Sun: Set operation pattern on Saturday ③ All days: Set operation pattern on Monday ④ Each day: Set the operation pattern on the day selected 1 2 7.
■ Operation method of basic operation 9. [Checking of operation pattern] screen is displayed When saving the setting, tap Set button. ① In case of setting all It shifts to the [Set all contents acknowledge] screen (☞ Go to 10) In ② case of individual setting Save the setting and shift to the [Day selection] screen (☞ Go to 4) 10. [Set all contents acknowledge] screen is displayed Tap Yes and save the setting After saving, it returns to the [Day selection] screen 11.
How to set day off The day off for ①Every week ②Specific period of time ③Specific day can be set. If the day set day off, the operation to top up on that day is not done. 1. Push the Schedule setting switch on the panel. 2. The menu screen of [Setting of schedule] is displayed. Tap the [Setting of day off] 3. The menu screen of [Setting of day off] is displayed. Tap the desired period.
■ Operation method of basic operation 5. Set the [Starting day]. Set the dd/mm/yy by tapping ▲ ▼ buttons. ▼ buttons. After setting the date, tap Set button. 6. Set the [Ending day]. Set the dd/mm/yy by tapping ▲ After setting the date, tap Set button. 7. The [Checking of set contents] screen is displayed (☞ Go to 4 ) 8. The detail screen of [Setting of specific day] screen is displayed. If changing the set contents, ① select the line of setting No. and ② tap Change button. (☞ Go to 10) 1 9.
How to set peak-cut Peak-cut on weekly basis can be set 1. Push the Schedule setting switch on the panel. 2. The menu screen of [Seting of schedule] is displayed. Tap the [Setting of peak-cut] 3. The selection screen of [Peak-cut timer] is displayed. Tap the item of setting day. ① Weekdays: From Monday to Friday (☞ Go to 6) ② Sat, Sun: Saturday and Sunday ③ All days: From Monday to Sunday ④ Each day: Go to the [Day selection] screen (☞Go to 4) 4. Tap the day to be set on the display ①.
■ Operation method of basic operation 6. The [Checking of current set contents] screen is displayed. When changing or adding the setting contents, ① select the column of the setting No. to be changed ② and tap Change button. ■ The setting contents displayed may differ depending on the set day selected (☞ Go to 3) ① Weekdays: Set peak-cut on Monday ② Sat, Sun: Set peak-cut on Saturday ③ All days in a week: Set peak-cut on Monday ④ Each day: Set peak-cut on the day selected 1 2 7.
10. Set the [Peak-cut %]. Set the [Peak-cut %] by tapping ▲ ▼ buttons. The [Peak-cut %] can be set at 10%, 40%, 60% and 80%. After setting the [Peak-cut %], tap Set button. (☞ Go to 11) 11. The [Checking of set contents] screen is displayed (☞ Go to 7 ) When tapping Set button, the set contents are confirmed and [Checking of set contents on the day] screen is displayed. (☞ Go to 6) 12. If changing or adding the setting contents on the same day continuously, please start the work from 6. 13.
■ Operation method of basic operation How to check operation pattern The current operation pattern can be checked 1. Push the Schedule setting switch on the panel. 2. The menu screen of [Setting of schedule] is displayed. Tap the [Checking of peration pattern] 3. Tap the day to be set on the display. The current setting contents of the day tapped are displayed. 4. The [Checking of set contents] screen is displayed. When tapping Next button, the next setting content is displayed.
How to do the [Operation to fill up] Until the hot water amount becomes 100%, the heat pump units are operated. 1. Start operation When pushing Operation to fill up switch, the [Acknowledge for operation to fill up] screen is displayed. ■ If it is pausing by pushing Run/Pause switch, the [Operation to fill up] cannot be started. After starting operation by pushing Run/Pause switch, push Operation to fill up switch. 2.
■ Operation method of basic operation How to set to increase or decrease the hot water amount uniformly In case that the usage amount of hot water may vary depending on the season or the day of a week,the hot water amount set by [Setting of operation pattern] can be increased or decreased uniformly. 1. Tap HW amount button on the TOP screen. 2. The current hot water set amount is displayed. 3. When changing the setting, tap the section just below the day to be changed and change the hot water amount.
Display usage of hot water amount Today’s usage of hot water amount is displayed on the TOP screen. And the storage amount of hot water by connected each heat pump unit from yesterday up to now can be checked. 1. The usage of hot water amount per hour is displayed at the [Usage of HW amount] display section on the TOP screen. 2. If displaying the [Usage of HW amount] on yesterday, or switching the heat pump unit to be display, tap the [Usage of HW amount] section. 3.
■ Operation method for menu manipulation Limited items for Sub remote control When controlling one heat pump unit with two remote controls, following settings cannot be done with Sub remote control. Please set them with Main remote control. In case of setting with Sub remote control, the icon is displayed on the TOP screen.
How to operate on the menu screen 1. Tap Menu button on the TOP screen 2. The [Main menu] screen is displayed. When tapping the desired menu item, the setting screen for each item is displayed. If there are multiple pages, the Next button on the first page and the Previous button on the last page are displayed. 3. When tapping Back button, it returns to the TOP screen. 4. On the setting screen of each item, if the Set button is placed, the setting content can be confirmed by tapping Set button.
■ Operation method for menu manipulation How to operate on the menu screen 5. Regarding the item mentioning Administrator password in the user’s manual, when selecting such item, the [Input Administrator password] screen is displayed. Enter the administrator password (4 digits number) and tap Set button. If the administrator password is unknown or wrong, the setting cannot be changed. Note ・For the administrator password which is set at the shipping from the factory, refer to the installation manual.
■ Operation method for various settings How to set [Initial settings] 1. Tap the [Initial settings] on the main menu screen. 2. The menu screen of [Initial settings] is displayed, tap the desired item. ① Clock setting ② Date and time display ③ Contrast ④ Backlight ⑤ Controller sound … Go to Page 39 … … … … Go to Page 40 Go to Page 40 Go to Page 41 Go to Page 41 ■ How to set clock time 1. Tap the [Clock setting] on the [Initial settings] menu screen, the [Clock setting] screen is displayed.
■ How to set date and time display 1. When tapping [Date and time display] on the [Initial settings] menu screen, the [Date and time display] screen is displayed. Set date and time display [Hide] or [Display]. Set a day of the week [Hide] or [Display]. Set the display method Set [12H].............. In case of 3:50 in the afternoon, it is displayed as [PM 3:50] Set [24H].............. In case of 3:50 in the afternoon, it is displayed as [15:50] Position of AM/PM Set [Infront] ...........
■ Operation method of various setting ■ How to set backlight 1. When tapping [Backlight] on the [Initial settings] menu screen, the [Backlight] setting screen is displayed. Please set ON/OFF of Backlight and its lighting time (From 5sec to 90 sec at 5-sec intervals). ON …… When tapping the LCD, Backlight is lit on. If no operation is done during the set time period, Backlight is lit off automatically. OFF …… E ven if tapping the LCD, Backlight is not lit on. 2. After setting, tap Set button.
How to set Administrator settings 1. Tap the [Administrator settings] on the main menu screen. Since Administrator [Input password] screen is displayed enter the Administrator password (☞ Go to Page 38) 2. S ince the [Administrator settings] menu screen is displayed, please tap your desired item.
■ Operation method of various setting ■ How to set night tariff Regarding the power consumption for day time and for night time displayed on the [More information] screen, the time zone to integrate power consumption can be changed. 1. When tapping the [Night tariff setting] on the [Administrator settings] menu screen, the [Night tariff setting] screen is displayed. If changing [Start time] or [End time] displayed, tap Change button.
■ How to set remote control display The display contents of remote control can be set 1. When tapping the [RC display setting] on the [Administrator settings] menu screen, the [RC display setting] menu screen is displayed. ① Name of RC (☞ Go to 2) ② Name of HP unit (☞ Go to 3) …Set the name of RC ③ Defrost operation display (☞ Go to 4) …Set to display [In operation ④ Status of HW amount (☞ Go to 5) …Set to display [Status of HW …Set the name of HP unit for defrosting] or not amount] or not 2.
■ Operation method of various setting 3. Set the name of HP unit to be added to the HP unit No. button. Tap the HP unit No. button to which the name is set. When the letter selection screen is displayed same as at the setting of the name of RC (☞ Go to 2), enter letters. The name of HP unit can be entered up to 4 2-byte (8 1-byte9 letters. When the input is over, tap Set button. 4. Set the message of [In operation for defrosting] to be displayed or not.
5. S et the icon for the [Status of HW amount] to be displayed or not. If the hot water amount does not reach to the set amount, the icon for the [Status of HW amount] is displayed. Display… If the hot water amount does not reach to the set amount, the icon [ ] is displayed on RC. Hide …[ ] is not displayed on RC.
■ Operation method of various setting ■ How to change the step sized of HW temp. The step size of the hot water temp can be changed. 1. When tapping the [Step size of HW temp] on the [Administrator settings menu screen, the [Step size of HW temp] menu screen is displayed. Please tap a desired step size.
■ How to set the User environment By selecting the typical operation pattern of business type, the detailed operation pattern can be set easily. 1. When tapping the [User environment] on the [Administrator settings] menu screen, the [User environment] menu screen is displayed. Please select the business type whose operation pattern is similar to the target hot water temp of each time zone to be set.
■ Operation method of various setting How to check the remote control setting A setting list for the current setting of remote control and heat pump unit can be checked. 1. Tap the [Check of RC setting] on the menu screen. 2. If multiple heat pump units are connected to the remote control, a list of all heat pump unit connected. Tap the HP unit to be displayed. On the [Select heat pump unit] screen, up to 8 units are displayed.
■ For maintenance Maintenance of remote control ● Maintenance of LCD and main body of remote control. When the surface of LCD or main body becomes dirty, wipe it with a dry soft cloth. If the dirt on the surface cannot be removed, soak the cloth in neutral detergent diluted with water, squeeze the cloth tightly, and clean the surface. And then wipe the surface with a dry cloth. Request Do not use any paint thinner, organic solvent, or strong acid. WARNING Do not use flammable materials (e.g.
■ For maintenance Measure for anti-freezing water in winter If the ambient temperature around the unit becomes below 0°C, the water pipe may freeze and it may cause damage of the heat pump unit. Please consult with the dealer and be sure to take proper measure for anti-freezing. And if the water may freeze, please keep the power on supplying to the unit, even if the unit is pausing, because the heat pump unit may start operation for anti-freezing. When stopping the unit for long period.
■ When error happens However, please note the following cases are not anomaly. The cases that are not anomaly Q The heat pump unit repeats Run and Stop A D uring hot water storage operation, if the outdoor air temp is rather low, the HP unit repeats Run and Stop due to defrost operation. During standby, if the outdoor air temp is below 5°C the water pump built in the HP unit repeats Run and Stop in order to prevent water in the HP unit and piping from freezing.
■ When error happens If error happens on the heat pump unit, [Under protection stopping] is displayed at the message display section. Please do following procedures and stop operation. And inform to the dealer where you purchased. 1. The message of [Under protection stopping] is displayed at the message display section. Tap Menu button. Under protection stopping. Check the content from Menu. 2. Error code is displayed on the [Error display] screen. Check the error code and tap Contact button 3.
■ When error happens A list of error code Remote controller Error code Green Red No display Keep flashing Stay off Normal E1 E10 Keep flashing Keep flashing Stay off Stay off Normal Normal E31 Keep flashing 1-time flash E31 E32 Keep flashing 1-time flash E32 E36 Keep flashing E37 Keep flashing 1-time flash 1-time flash 2-time flash 3-time flash 4-time flash 5-time flash 6-time flash E36-1 E37-1 E37-2 E37-3 E37-4 E37-5 E37-6 E37-7 E37-9 E38 E39-1 E39-3 E40 E41-1 E42-1 LED on heat pum
A list of error code (Continue) Remote controller Error code LED on heat source unit Green 7-segment display Contents of inspection E61 Keep flashing E63 Keep flashing Red 1-time flash 2-time flash 3-time flash 1-time flash E64 Keep flashing 1-time flash E64 E89 No hot water comes out (1) No hot water comes out (2) No hot water comes out (3) Anomalous sound and vibration (1) Anomalous sound and vibration (2) Keep flashing Keeps flashing Keeps flashing Keeps flashing 1-time flash Stays off Sta
■ Contact company From the menu screen, the service contact can be seen. 1. Please tap [Contact company] on the menu screen. ■ Next service date If the setting of [Next service date] was done on the [Service & Maintenance] menu, the following screen is displayed for 5sec at starting operation and for 20sec at ending operation. And when the [Next service date] has passed by, the icon [ ] is displayed on the TOP screen.
■ When [Periodical check] is displayed When [Periodical check 1] or [Periodical check 2] is displayed In order to inform the periodical inspection period of heat pump unit, [Periodical check 1] or [Periodical check 2] may be displayed at the message section of the TOP screen. If the following display of periodical check is displayed, please ask periodical check to the contact company displayed on the [Contact company] screen or the dealer where you purchased.
■ Specifications Model Item Power supply Operation to top up (In intermediate season)＊1 Operation to top up (In cold region)＊2 Operating sound＊3 Outside dimension Current Heating capacity Water amount Power consumption COP Heating capacity Water amount Power consumption COP Height Width Depth Max Starting Unit weight Retained water amount Color Compressor Refrigerant Refrigerant oil Type × Pcs Nominal output Type Charged amount Type Charged volume Crankcase heater Anti-freezing heater for water pipe
EC DECLARATION OF CONFORMITY We MITSUBISHI HEAVY INDUSTRIES, LTD. AIR-CONDITIONING & REFRIGERATION DIVISION 3-1, Asahi, Nishibiwajima-cho, Kiyosu, Aichi, 452-8561, JAPAN declare under our sole responsibility that the apparatus Description of apparatus: Heat Pump Water Heater Model name: ESA30E Series referred to in this declaration conforms with the following directives.
AIR-CONDITIONING & REFRIGERATION DIVISION 3-1, Asahi, Nishibiwajima-cho, Kiyosu, Aichi, 452-8561, Japan http ://www.mhi.co.jp MITSUBISHI HEAVY INDUSTRIES AIR-CONDITIONING EUROPE, LTD. 7 Roundwood Avenue, Stockley Park, Uxbridge, Middlesex, UB11 1AX, United Kingdom Tel : +44-20-7025-2750 Fax : +44-20-7025-2751 http ://www.mhiae.
