Table of Contents
Advertisement
Quick Links
PRE SALES
MEGA∙Q
Commercial heat pump hot water system
Pre-sales
Literature
Refrigerant
R410A
R134a
MODELS
Heat pump hot water system
Heat source unit: RXHWQ120MQTJ*
Cascade unit: BWLP120TJU
Controller kit: BRP26B2VJU
● This operation manual contains safety precautions.
Carefully read this operation manual to ensure proper operation.
Keep this manual in a handy place for future reference.
Furthermore, make certain that this operation manual is handed to the new user when the user
changes.
● The warranty has to be received from your dealer and stored carefully.
OPERATION MANUAL
PRE SALES
Advertisement
Table of Contents
Related Manuals for Daikin MEGA-Q Series
Summary of Contents for Daikin MEGA-Q Series
- Page 1 PRE SALES OPERATION MANUAL MEGA∙Q Commercial heat pump hot water system Pre-sales Literature Refrigerant R410A R134a MODELS Heat pump hot water system Heat source unit: RXHWQ120MQTJ* Cascade unit: BWLP120TJU Controller kit: BRP26B2VJU ● This operation manual contains safety precautions. Carefully read this operation manual to ensure proper operation. Keep this manual in a handy place for future reference.
-
Page 2: Safety Considerations
Only use accessories Instruct the customer on how to operate and maintain the unit. made by Daikin that are specifically designed for use Inform customers that they should store this Operation with the equipment and have them installed by a Manual with the Installation Manual for future reference. - Page 3 • Never touch the internal parts of the controller. Do not • Do not wash the hot water supply unit with excessive remove the front panel because some parts inside are water. An electric shock or fire could result. dangerous to touch. To check and adjust internal •...
- Page 4 Safety Considerations • When not using for a long time, shut off the power a. Places that can sufficiently withstand the weight of supply circuit breaker and drain the water from the the hot water supply unit yet can suppress the cascade unit and water piping.
-
Page 5: Table Of Contents
Heat source unit: RXHWQ120MQTJ* Cascade unit:BWLP120TJU Controller kit: BRP26B2VJU Table of Contents Safety Considerations ..........i Specifications ..............2 Before Use ..............3 Name and Function of Each Part of the Unit ....4 Remote Controller: Name and Function of Each Switch and Display ..6 Name and Functions ...........8 Operation Range ............10 Basic Operation ............10... -
Page 6: Specifications
Specifications Application Heat pump hot water system, Non-drinking Unit name Heat source unit Cascade unit RXHWQ120MQTJ BWLP120TJU Model name Power supply 3-Phase 208/230V 60Hz 3-Phase 208/230V 60Hz (inch) 66-11/16 x 48-7/8 x 30-3/16 60-1/16 x 35-3/16 x 30(762) Dimension H x W x D (mm) (1694 x 1242 x 767) (1525 x 893 x 762) -
Page 7: Before Use
Before Use Read this section to understand the products MEGA Q is a heat pump hot water system composed of a heat pump hot water unit that turns the water from the water receiving tank into hot water (*), a closed type hot water storage tank that stores hot water (*) and a remote controller. (*) Water is non-potable and cannot be used for drinking. -
Page 8: Name And Function Of Each Part Of The Unit
Name and Function of Each Part of the Unit Heat sourceunit RXHWQ120MQTJ* Air outlet Air inlet Heat exchanger (Aluminum fins) Service precautions label (Note 3) Refrigerant piping (to cascade unit) Model name label (Note 2) Communication line (to cascade unit) Power supply wiring (to dedicated circuit breaker) Ground wiring... - Page 9 Cascade unit BWLP120TJU Service precautions label (Note 3) Model name label (Note 2) Power supply wiring (to dedicated circuit breaker) Ground wiring (Note 1) (to ground terminal) Refrigerant piping (from Heat source unit) Communication line (from Heat source unit) Communication line (from tank control panel) Circulating water piping (from hot water storage tank)
-
Page 10: Remote Controller: Name And Function Of Each Switch And Display
Remote Controller: Name and Function of Each Switch and Display This hot water supply unit operates with the remote controller provided with the Controller kit (BRP26B2VJU). Button Locations and Descriptions 1. Operation Mode Selector Button (Not Applicable) 11. LCD (with backlight) 4. -
Page 11: Temperature Conversion Table
1. Operation Mode Selector Button 7. Left button (This function is not available for This system ) • Used to highlight the next items on the left-hand side. • Each screen is scrolled in the left-hand direction. • 8. On/Off button 2. -
Page 12: Name And Functions
Name and Functions Liquid Crystal Display • Three types of liquid crystal display (LCD) are available. The standard display is set by default. • Detailed display can be selected in the main menu. (See page 12.) Standard display 5. ( ) display 4. - Page 13 1. Operation Mode • Used to display the current operation mode. 2. Set Temperature of the Hot Water Supply • Used to display the setpoint for the hot water supply. 3. Message The following messages may be displayed. “This function is not available” •...
-
Page 14: Operation Range
Operation Range This unit is designed to operate in the ranges provided below. If operating continuously, use within the operating conditions shown in Table 1. Continuous operation under conditions other than those described below may cause freezing and the machine may stop in order to protect itself Table 1 Heat pump hot water system... - Page 15 Preparation • For mechanical protection purposes, apply power to the outside units at least six hours before starting the operation of the system. Operation • The hot water supply temparature will increase by 1°C (or 1°F) when button is pressed and decrease by 1°C (or 1°F) Heat Set to °C...
-
Page 16: Quick Reference
Quick Reference „The main menu has the following items. Reference Menu item Description page Used to set the run-time for the system unit using this controller. Energy Saving Off timer Options • Possible to set in 10 minute increments from 30 to 180 minutes. Maintenance Information Used to display the maintenance information. -
Page 17: Off Timer
Menu Options Off Timer „Configuring and Confirming the Off Timer Settings Operation • Display the main menu screen. (See page 12.) Main Menu Energy Saving Options • Press buttons to select the Schedule Maintenance Information Energy Saving Options on the main menu screen. Configuration Current Settings Press Menu/OK button to display the off timer screen. -
Page 18: Operation
Menu Options ON or OFF setting of the off timer Operation • Navigate to the Energy Saving Options screen. (See page 13.) Energy Saving Options Enegy Saving List • Press buttons to select Energy Saving List on the off timer screen. Setpoint Range Setback Condition Press Menu/OK button to display the Energy Saving List screen. -
Page 19: Maintenance Information
Maintenance Information „Displaying the Service Contact and Model Information Operation • Display the main menu screen. (See page 12.) Main Menu Energy Saving Options • Press buttons to select Maintenance Information on the main menu Schedule Maintenance Information screen and press Menu/OK button. Configuration Current Settings Clock &... - Page 20 Menu Options „Display Display Mode Operation • Navigate to the configuration screen. (See page 15.) Configuration Display • Press buttons to select Display on the configuration screen. Contrast Adjustment Press Menu/OK button to display the display screen. Return Setting • Press buttons to select Display Mode on the display screen.
-
Page 21: Current Settings
Current Settings „Manipulating the Current Settings Operation • Display the main menu screen. (See page 12.) Main Menu Energy Saving Options • Press buttons to select Current Settings on the main menu screen Schedule Maintenance Information and press Menu/OK button. Configuration Current Settings Clock &... - Page 22 Menu Options • Select Day with buttons. Date & Time Year 2022 Change the day with buttons. Month Thursday Holding down the button causes the number to change continuously. 12:00 Days of the week change automatically. Return Setting • Select Hour with buttons.
-
Page 23: Maintenance
„12H/24H Clock Operation • Display the clock & calendar screen. (See page 17.) Clock & Calendar Date & Time • Press buttons to select 12H/24H Clock on the clock & calendar 12H/24H Clock screen. The 12H/24H clock screen will appear when Menu/OK button is pressed. Return Setting By default, the time display is set to the 12H format. -
Page 24: How To Change Settings
How to Change Settings (operating in “Field setting mode”) Select the desired mode with the remote controller to set the temperatures at the start and end of Water Heating or Water Reheating. CAUTION To change the settings, consult your dealer. To shower, faucet, etc. - Page 25 „How to set Operation • Press and hold Cancel button for 4 seconds or longer during backlight lit. • Service settings menu is displayed. Heat Set to °C Field Settings • Select in the Service Settings menu, and press Menu/OK Service Settings Test Operation button.
- Page 26 How to Change Settings (operating in “Field setting mode”) Table 2 List of “mode number”, “FIRST CODE NO.”, “SECOND CODE NO.” SECOND CODE NO. Mode FIRST Setting Item number CODE NO. Water reheating start temperature "Ts3" (°C) Water reheating end and water heating end temperature differential (°C) Water heating start detection sensor selection "Ts1 or Ts2"...
-
Page 27: Optimum Operation
Optimum Operation Observe the following precautions to ensure the system operates property. • Never place objects near the air inlet or the air outlet of the unit. It may cause deterioration in the performance or stop the operation. • Keep the remote controller at least 3.5 ft. (1 m) away from televisions, radios, stereos, and other similar equipment. Failing to do so may cause static or distorted pictures. -
Page 28: How To Maintain
How to Maintain Daily maintenance „Maintenance of water NOTE • Be sure to use tap water that complies with the water quality standards in accordance with federal/state/local laws or ordinances. Do not use water that contains a lot of foreign matter. For water quality management, refer to “Water Quality”... -
Page 29: Before Operation
Before operation Ensure the followings before the operation . • Is the air inlet/air outlet of the heat source unit blocked? Remove any obstructions that may be present. A decrease in air flow due to obstacles will lead to a decrease in performance and equipment malfunction. •... - Page 30 How to Maintain When not using for a long time Turn off the power supply. • When the cascade unit is deenergized, the remote control will show no display. • To save energy, please deenergize the unit if it is not used a long period of time. Please drain the water.
-
Page 31: Troubleshooting
Troubleshooting Check the following before requesting service Symptoms Causes Measures Is a power supply fuse blown? Turn off the power supply. Is the lever in the power supply circuit breaker in • If the power supply circuit breaker lever is in the OFF or trip position? the OFF position, turn on the power supply. - Page 32 Troubleshooting The following symptoms do not mean system malfunction. Symptoms Causes This is because things are being controlled so When operation is started again that the machine is not overloaded. Operation immediately after stopping operation The system does not will start automatically after about 5 minutes. operate Immediately after the power supply is This is for operation preparation.
- Page 33 If one of the following malfunctions occur, take the measures shown below and contact your local dealer. WARNING • Stop operation and shut off the power if anything unusual occurs (burning smells, etc.) Leaving the unit running under such circumstances may cause breakage, electrical shock, or fire. Contact your local dealer.
-
Page 34: Error Code List
Error Code List Error code Description Error code Description Heat source unit, Cascade unit: Main PCB Heat source unit, Cascade unit: Communication abnormality, EEPROM abnormality error between inverter PCB and Heat source unit / Cascade unit main PCB Heat source unit, Cascade unit: Current leakage detection Heat source unit, Cascade unit: Power supply voltage imbalance... -
Page 35: Water Quality
Water Quality Use tap water. In order to prevent water piping from corrosion and scale, use heat source water that meets the water quality standards below. Water quality standards for cooling water, chilled water, hot water and makeup water (3) Water quality standard for refrigerating and air-conditioning equipment JRA GL-02-1994 water quality standard (high medium temperature water system) must be met. -
Page 36: After-Sales Service And Warranty
After-Sales Service and Warranty After-sale Service DANGER • Refrigerant gas may produce a toxic gas if it comes in contact with fire such as from a fan, heater, stove or cooking device. Exposure to this gas could cause severe injury or death. WARNING •... - Page 37 „Recommended inspection and maintenance cycles [Note: The maintenance cycle is not the same as the warranty period.] Table 1 assumes the following usage conditions. 1. Normal use without frequent starting and stopping of the machine. (Although it varies with the model, we recommend not starting and stopping the machine more than 6 times/hour for normal use.) 2.
- Page 38 „Moving and discarding the unit This unit uses chlorofluorocarbon. Contact your local Daikin Sales representative for discarding this unit since it is required by law to collect, transport and discard the refrigerant in accordance with “chlorofluorocarbon collection and destruction” law.
- Page 39 PRE SALES...
- Page 40 Daikin Texas Technology Park, 19001 Kermier Road, Waller, TX, 77484, U.S.A. PRE SALES 3P680478-2A EM21A031 [2204] SP...
Need help?
Do you have a question about the MEGA-Q Series and is the answer not in the manual?
Questions and answers