Page 1 Manual No. '15 HM-T-246 TECHNICAL MANUAL Air to Water Heat Pump Q-Ton Natural refrigerant CO water heater Including hot water recirculation system AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 2: Table Of Contents
'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 heat pump water heater for commercial use ....9 1.1 Mechanism of CO 1.2 As for hot water storage unit ..............
Page 3: Table Of Contents
'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 CO heat pump water heater) ..... 113 (14) The behavior after power recovery ............
Page 4 '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 ..
Page 5 '15 • HM-T-246 Service code history of ESA30E Adaptation with Service Code A Adaptation with Service Code B Adaptation with Service Code C Adapted to the E U E rp Directive Adapted to the revised E U L V D N ewly adapted −...
Page 6 '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 Item P art N o. Remark Specification category B ○...
Page 7 '15 • HM-T-246 Table3. Compatibility of spare parts relative to the specification categories C. N ew model Compatibility N ame Current model Remark (Adapted to E rP ) Type E SA0E -/B E SA0E -/C N ew spare parts Current spare parts to current model to new model E /I...
Page 8: Service Code History Of Rc-Q1E
'15 • HM-T-246 Service code history of RC-Q1E Service code of the CO water heater remote control RC-QE is changed to A from May 0 after arrangements to improve specifications and to add new functions. Major changes are as listed below. Adaptation with service code / A Item Appearance...
Page 9 '15 • HM-T-246 Software WCMC-. is upgraded with changes and additions as described hereafter. Changes Item 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 N ew defrost control In the case of outside air temperature above -℃, the water...
Page 10: General Description
'15 • HM-T-246 1. General description 1.1 Mechanism of CO heat pump water heater for commercial use • The CO heat pump water heater for commercial use is a water hater that is composed of a heat pump unit with natural refrigerant such as CO which can produce hot sanitary water with heat pump technology and a hot water storage unit which can store hot water.
Page 11: As For Hot Water Storage Unit
'15 • HM-T-246 1.2 As for hot water storage unit Heat pump water heater can be connected to an unvented hot water storage cylinder and it is applicable to various type of hot water supply system. Unvented hot water storage cylinder Operation Hot water to top up...
Page 12 1.3 CO heat pump water heater: Operation chart (Ex1. In case of unvented hot water storage system) loc time loc time in tes in tes 5 00 5 00 5 00 5 00 5 00 5 00 5 00 5 00 5 00 5 00 5 00...
Page 13: Feature Of Natural Refrigerant Co 2
'15 • HM-T-246 1.4 Feature of natural refrigerant CO 1.4.1 General characteristics The general characteristics of CO is as follows. Under the atmospheric pressure, since CO is gaseous state and has following characteristics, be careful to handle it. a) It is colorless and odorless gas, but when interacting with water, it produces mild acidity and irritating odor. b) When dissolving it with water, it will be mild acidic and may cause metal to corrode.
Page 14 '15 • HM-T-246 1.4.2 Characteristics of CO refrigerant refrigerant is so called R and its physical property and saturated vapor pressure at each temperature are shown in table .. For comparison purpose, it is shown in contrast with those of R0A refrigerant generally using for current air-conditioners. Table 1.2 Physical property and saturated vapor pressure of refrigerant Items (R)
Page 15 '15 • HM-T-246 1.4.3 Handling precaution of CO refrigerant Regarding the safety considerations to high pressure, be careful not to give any damage on the refrigerant circuit piping of heat pump water heater during servicing, and to purge a small amount of the refrigerant gradually by adjusting valve opening properly to a place where there is no person.
Page 16: Relation Between Recirculation Load And Cylinder Volume
'15 • HM-T-246 1.5 Relation between recirculation load and cylinder volume 1.5.1 Features The CO heat pump water heater allows converting a set of one way system composed of heat pump water heater and hot water cylinders, without change and immediately, to a recirculation system by adding up a mixing valve and a recirculation pump at site.
Page 17 '15 • HM-T-246 1.5.2 Example of calculation for recirculation load ● Heat loss from piping (W) = Heat loss per unit length of recirculation feed pipe diameter (see table below) × recirculation feed pipe length × (Recircu- lation feed hot water temperature − Temperature around pipe) ＋ Heat loss per unit length of recirculation return pipe diameter (see table below) ×...
Page 18 '15 • HM-T-246 If the hot water outlet temperature is changed, the number of cylinders as the recirculation load also changes. For the calculation at 0 ℃ ℃ Hot water outlet temperature Recirculation temperature setting ℃ Recirculation return temperature ℃ Feed pipe length Return pipe length ℃...
Page 19: Specifications
'15 • HM-T-246 2. SPECIFICATIONS 2.1 Speciﬁcations of product (1) Heat pump water heater Model ESA30E-25 Item － P ower source P hase 0V ± %, 00V ± %, V ± %, 0/0Hz Heating capacity 0.0 (Water amount) L/min ....
Page 20 '15 • HM-T-246 (N otes) . P erformance of operation to top up in intermediate season shows the capacity measured under the conditions that outdoor air temperature is ° C DB/° C WB, water inlet temperature is ° C and hot water outlet temperature is ° C . .
Page 21 (3) Remote control for heat pump water heater (Model : RC-Q1E) (a) Outline dimensional drawing Display part of time and remote control name Dimensions to mount a remote control Installing space Display part of icon In case of taking out In case of taking out wire from upper left wire from upper center...
Page 22 '15 • HM-T-246 (b) List of setting functions Setting and display items Detailed contents . Remote control network Multiple heat pump water heater control Max. sets of heat pump water heaters in one Superlink network can be connected to one remote control and controlled by it. Heat pump water heaters shall be set addresses.
Page 23 '15 • HM-T-246 Setting and display items Detailed contents HP unit selection The heat pump water heater to be displayed on RC can be selected. RC name and HP water heater name can be registered. RC display setting On/Off of [Defrost operation display] and [Display status of HW amount] display can be set.
Page 24 '15 • HM-T-246 (c) Setting method of remote control for heat pump water heater [At the initial use] turn the power ON . After the completion of initial setting, TO P screen (Screen -) is displayed on the remote control. ＊ Operation mode is [ P ause] From this screen please start test run of water pump.
Page 25 '15 • HM-T-246 . When starting the primary setting of operation, the message of “In P rimary operation” [Screen -] is displayed on the TOP screen (Screen -). When completing the primary setting of operation, the heat pump water heater is stopped and the message of “In primary operation”...
Page 26 '15 • HM-T-246 (2) Set the time period for the operation to ﬁll up ① When pushing Schedule setting switch, [Setting of schedule] menu screen is displayed. (Screen ② -) ② When tapping [Setting of weekly operation pattern], the [Weekly timer] screen is displayed. Tap All days buttom (Screen ② -) ②...
Page 27 '15 • HM-T-246 (3) Set the hot water amount. ① Carry out the same procedure as [()- ① and ② ② -) ③ -) When tapping N ext button ② Change the setting of hot water amount at :00 to 0% in order to top up to 0% of the full hot water amount until :00. Tap the line of [/:00/0%] and then tap Change button (Screen ③...
Page 28 '15 • HM-T-246 ⑥ After the each setting is done, the detail setting screen is displayed. Tap the Set button. (Screen ④ -) ⑦ Set button.(Screen ④ -) ⑧ Group setting acknowledge screen is displayed. Tap the Y es button (Screen ④ -) [Screen ④...
Page 29 '15 • HM-T-246 . Operation pattern of heat pump water heater When setting like () to () mentioned above, the set hot water amount at each time of the day is shown as follows. (1) Fill up hot water from 23:00 to 7:00 (3) Peak-cut operation from 10:00 to 13:00.
Page 30 0 Model name label Check port for -segment display C (Right) C (Front) Signal wire connection terminal block P ower cable connection D (Right) D (Front) 0. . terminal block N otes () Be sure to fix the unit with anchor bolts . 0. () Be sure to keep space above the unit at least m...
Page 31: Inner Structure
'15 • HM-T-246 2.3 Inner structure Heat pump water heater Low pressure sensor PSL1 Intermediate pressure sensor PSM1 High pressure sensor PSH1 High pressure switch 63H1-1 Electronic expansion valve EEVH2 Electronic expansion valve EEVH1 Electronic expansion valve EEVG1 Receiver Control PCB High pressure side service valve Low pressure side service valve Terminal block for...
Page 32 '15 • HM-T-246 Without transformer Air purge valve Flow regulator CWFV Inter-cooler Gas cooler Hot water outlet Water pump Drain water outlet Drain valve Feed water inlet Rear view AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 33 '15 • HM-T-246 Power transformer Rear view AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 34: System Diagram
2.4 System diagram (1) Heat pump water heater (Overall view) ESA30E-25 Needle valve Service valve at high pressure side Service valve at low pressure side 7/16-20UNF 7/16-20UNF Needle valve Solenoid valve High pressure switch for hot gas bypass (63H1-1) Fan motor...
Page 35: Electrical Wiring
2.5 Electrical wiring Heat pump water heater AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 36 '15 • HM-T-246 2.6 Heating system performance characteristics for the operation to top up with recirculation loop (1) Heating performance charcteristics table for the operation to top up (a) Hot water outlet temperature: 60˚C Heating capacity P ower consumption Feed water temperature Outdoor air temperature 30.0 5.38 5.58...
Page 37 '15 • HM-T-246 (c) Hot water outlet temperature: 70˚C Hot water outlet temperature: 70 Heating capacity Power consumption Feed water temperature Outdoor air temperature 30.0 6.17 4.86 30.0 6.45 4.65 30.0 7.53 3.98 30.0 10.59 2.83 30.0 10.73 28.5 10.88 2.62 24.0 10.22...
Page 38 '15 • HM-T-246 (e) Hot water outlet temperature: 90˚C Hot water outlet temperature: 90 Heating capacity Power consumption Feed water temperature Outdoor air temperature 30.0 8.86 3.39 30.0 8.99 3.34 30.0 9.24 3.25 30.0 11.05 2.71 30.0 10.73 2.80 28.5 10.88 2.62 24.0...
Page 39 '15 • HM-T-246 (2) Heating performance charcteristics graph for the operation to top up (a) Hot water outlet temperature: 60°C Heating capacity Feed water inlet temperature 5-30℃ 5˚C 17˚C 24˚C 30˚C Feed water inlet temperature Power consumption 30˚C 24˚C 17˚C 5˚C Outdoor air temperature (℃DB) Relative humidity of performance characteristics...
Page 40 '15 • HM-T-246 (b) Hot water outlet temperature: 65°C Heating capacity Feed water inlet temperature 5-30℃ 5˚C 17˚C 24˚C 30˚C Feed water inlet temperature Power consumption 30˚C 24˚C 17˚C 5˚C Outdoor air temperature (℃DB) Relative humidity of performance characteristics Outdoor air temperature <N otes>...
Page 41 '15 • HM-T-246 (c) Hot water outlet temperature: 70°C Heating capacity Feed water inlet temperature 5-30℃ 5˚C 17˚C 24˚C 30˚C Feed water inlet temperature Power consumption 30˚C 24˚C 17˚C 5˚C Outdoor air temperature (℃DB) Relative humidity of performance characteristics Outdoor air temperature <N otes>...
Page 42 '15 • HM-T-246 (d) Hot water outlet temperature: 80°C Heating capacity Feed water 5˚C inlet temperature 5-2 4 ℃ 17˚C 24˚C C O P 30˚C Feed water inlet temperature Power consumption 30˚C 24˚C 17˚C 5˚C O utdoor air temperature ( ℃DB) Relative humidity of performance characteristics Outdoor air temperature <N otes>...
Page 43 '15 • HM-T-246 (e) Hot water outlet temperature: 90°C Heating capacity Feed water inlet temperature 5-2 4 ℃ 5˚C 17˚C C O P 24˚C 30˚C Feed water inlet temperature Power consumption 30˚C 24˚C 17˚C 5˚C O utdoor air temperature ( ℃DB) Relative humidity of performance characteristics Outdoor air temperature <N otes>...
Page 44 '15 • HM-T-246 (3) Performance characteristic table for heating system with recirculation loop For the operation to top up, refer to the heating performance characteristics in section . () and (). enters transiently into the heat pump water heater. In such condition, the heating performance characteristics is shown in the table below. * Although the outlet water temperature is controlled and set remote control under the condition that feed water inlet temperature below, also shown by broken line in the following graph.
Page 45 '15 • HM-T-246 (b) In case of temperature set to 70°C Heating P ower Hot water outlet Setting temperature:0° C capacity consumption volume temperature Feed water inlet Outdoor air L/min ° C temperature temperature ° C . . ° C . . ....
Page 46 '15 • HM-T-246 (c) In case of temperature set to 90°C Heating P ower Hot water outlet Setting temperature:0° C capacity consumption volume temperature Feed water inlet Outdoor air L/min ° C temperature temperature ° C .0 .0 ° C . .0 °...
Page 47 '15 • HM-T-246 (4) Performance characteristic graph for heating system with recirculation loop (a) In case of temperature set to 65°C Brok en line: H eating capacity F eed w ater inlet temperature: 40 ℃ S olid line C OP 40℃...
Page 48 '15 • HM-T-246 (b) In case of temperature set to 70°C Brok en line: H eating capacity F eed w ater inlet temperature: 40 ℃ S olid line C OP 40℃ 50℃ 55℃ 60℃ 50℃ 55℃ ℃ 60℃ H ot w ater temperature 70℃ W ater flow volume: 17L / min -25 -20 -15 -10 -5 Outdoor air temperature [ ℃]...
Page 49 '15 • HM-T-246 (c) In case of temperature set to 90°C Brok en line: H eating capacity S olid line C OP 40℃ F eed water in et temperature 40˚C 50℃ 55℃ 50℃ 55℃ 60℃ ℃ 60℃ -25 -20 -15 -10 Outdoor air temperature [ ℃] Relative humidity of performance characteristics Outdoor air temperature...
Page 50: Performance Correction Method By The Effects Of Outdoor Relative Humidity
'15 • HM-T-246 2.7 Performance correction method by the effects of outdoor relative humidity Perf ormance correction meth od b y th e ef f ects of outdoor relativ e h umidity Heating perf ormance correction coe f f icient ch art f or th e operation to top up in R H 1 00 0.
Page 51 '15 • HM-T-246 2.8 Operartion sound Model: ESA30 series (50/60Hz) Measurement condition: Heating operation to top up in intermediate season Outdoor air temperature: 16°CDB/12°CWB Feed water inlet temperature: 17°C Hot water outlet temperature: 65°C (JRA 4060) Mike position: 1m in front and 1m in height id octa e and fre enc ( AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 52 '15 • HM-T-246 Measurement condition: Heating operation to top up in frosting season Outdoor air temperature: 2°CDB/1°CWB Feed water inlet temperature: 5°C Hot water outlet temperature: 65°C (JRA 4060) Mike position: 1m in front and 1m in height id octa e and fre enc ( AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 53: Control
'15 • HM-T-246 2.9 Control (1) Functional components for refrigerant cycle Symbol N ame of component Function Details Inverter scrotary compressor The compressor speed is controlled to maintain nominal heating capacity according to the outdoor air temperature, feed water inlet temperature and hot water outlet temperature set by remote control.
Page 54 '15 • HM-T-246 (2) Functional components for water cycle Symbol N ame of component Function Details DCWP Water pump DCWP is controlled to adjust the hot water outlet temperature to the set temperature set through remote control. P age DCWP is used for anti-freeze control of the water pipe. P age Control range of pump rotation speed: 000-000min As for the control details, please refer to [Water flow volume control] and...
Page 55 '15 • HM-T-246 (3) Control of refrigerant piping system (3)-1 Defrost control In order to recover from dropping the heating capacity for producing hot water due to the frost on the air heat exchanger of heat pump water heater, defrost operation is done periodically. By cutting jumper wire (J), it can switch from normal defrost control to defrost priority control* *.
Page 56 '15 • HM-T-246 () E nding condition If one of following conditions is established; (a) Both of temperature sensor on the outlet of heat exchanger (Tho-R, -R) detects ℃ or higher temperature for 0 seconds continuously. (b) Defrost operation time exceeds 0 minutes. (the forcible end time of defrost) (c) The cumulative operation hour of defrost exceeds the forcible end time and compressor stops.
Page 57 '15 • HM-T-246 (3)-2 Gas injection control <Gas injection circuit> SV-INJ1: Open gas injection () Starting condition If all of following conditions are established; (a) Compressor is ON . (b) Compressor is ON or minutes has elapsed after the end of defrost operation. (c) Suction super heat of compressor ＜...
Page 58 '15 • HM-T-246 () Anomalous stop control (b) If this anomalous stop happens times within 0 minutes, [E ] is displayed on the remote control and it becomes error stop mode. Compressor stops Compressor starts 0 ℃ ℃ Discharge pipe temperature (Tho-D) () Release error stop mode If the discharge pipe temperature becomes below the release value 0 ℃...
Page 59 '15 • HM-T-246 (3)-5 Low pressure protection control () P rotection control sor Hz is controlled to suppress the decrease of low pressure. Reduce Hz for every 0 seconds Release .MP a Low pressure (LP ) () Anomalous stop control (a) Starting condition If one of the following conditions is established;...
Page 60 '15 • HM-T-246 - Current safe control by inverter secondary current (a) Starting condition If all of the following conditions are established; ① Compressor is ON ② E xcept that the actual Hz is kept on decreasing or it is within second after the actual Hz decreased. ③...
Page 61 '15 • HM-T-246 (3)-9 Detection of temperature or pressure sensors disconnection () Starting condition If one of following conditions is established; ① Outdoor air temperature sensor, Heat exchanger temperature sensors, Intermediate receiver inlet temperature sensor, Suction pipe temperature sensor, Gas cooler water temperature sensor (a) The disconnection of sensor is detected for seconds continuously within 0 seconds after the power turns ON .
Page 62 '15 • HM-T-246 (4) Water circuit system control (4)-1 Water circuit system control at [Operation to top up] () Operation to top up If the hot water amount detected by the cylinder temperature sensor is less than the set amount in the cylinder, the heat pump water heater starts operation to top up the hot water and storage it.
Page 63 '15 • HM-T-246 [Set temperature temperature Actual hot water Initial state Water pump speed : Initial set speed Flow regulator: Initial set value Hot water outlet temperature set temperature? Water pump speed decreases Hot water outlet temperature set temperature? speed Water pump Min? Flow regulator opening...
Page 64 '15 • HM-T-246 (4)-3 Water pump operation for anti-freezing In case that the water in the pipe may be frozen due to decreasing the water temperature below 0 ℃ in winter season during the long term stop or anomaly stop of heat pump water heater, the water pump is forcibly operated in order to prevent water in the pipe from freezing. () Starting condition If all of the following conditions are established;...
Page 65: Lot
'15 • HM-T-246 2.10 Technical information of European regulations (1) Lot2 (a) Summary This document is intended to clarify that the water heater manufactured by us is adapted to E uropean E rP (E codesign re- quirements for energy-related P roducts) directive Lot (water heater and hot water storage cylinders). These units are electric mains-operated water heater with a rated heating capacity of 0kW and less and are assessed on the basis of the above-mentioned directive.
Page 66 '15 • HM-T-246 ) The name and address of the supplier Manufacture' s name and address MITSUBISHI HE AV Y IN DUSTRIE S, LTD. -, Asahi, N ishibiwajima-cho, Kiyosu, Aichi, -, Japan Branch name and address MITSUBISHI HE AV Y IN DUSTRIE S AIR-CON DITION IN G E UROP E , LTD. Roundwood Avenue, Stockley P ark, Uxbridge, Middlesex, Ub AX , United Kingdom X X L Climate...
Page 67 '15 • HM-T-246 ) Technical data of storage cylinder LapesaGrupoE mpresarial, S.L Model name GX -000-RB Standing loss W Storage volume 000 L ) Result of the measurement a) Average condition E nergy consumption Tapping heat （ kWh ）（...
Page 68: Lot11 (Grandless Circulators)
'15 • HM-T-246 (2) Lot 11 (Grandless circulators) (a) Summary This document is intended to clarify that the circulators integrated in our product are adapted to E uropean E rP (E codesign re- quirements for energy-related P roducts) directive Lot (glandless standalone circulators and glandless circulators integrated in products).
Page 69 '15 • HM-T-246 AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 70: Application Data
'15 • HM-T-246 PCM012D018 Air to water heat pump water heater for commercial use 3. APPLICATION DATA Heat pump water heater: INSTALLATION MANUAL 3.1 Installation work for air to water heat pump water heater E SA0E series HW storage unit: ◎...
Page 71 '15 • HM-T-246 WARNING CAUTION AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 72 '15 • HM-T-246 CAUTION Feature of CO refrigerant First aid under high concentration of CO Legal formalities AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 73: Before Installation
'15 • HM-T-246 (1) Before installation (Check the model, electrical speciﬁcations, piping, necessary option parts and etc, and install properly.) 1-1 One way hot water supply system diagram and component list ⑭ Expansion 1-1-1 System diagram Vessel ⑪ Relief valve ⑧...
Page 74 Recirculation Rilief valve feed ① Mixing valve hot water temperature JRG3400N T1 (60~65 ℃ ) or equivalent Wirings for sensors for Recirculation feed unvented cylinder Hot water Wirings for CWFV3 inlet for Mixing Air purge valve valve Cold water Hot water temperature inlet for Mixing Recirculation...
Page 75 '15 • HM-T-246 1-2-2 Component list Part name Model General description ① — ② ③ AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 76 '15 • HM-T-246 1-3 Speciﬁcations of unvented hot water storage cylinder for connecting to ESA30E AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 77 '15 • HM-T-246 1-4 Notabilia for designing hot water supply system Water piping limitation between the heat pump water heater and the unvented cylinder. Case 1. Heat pump water heater is installed below the unvented cylinders Unvented cylinder Pressure reducing valve Within 15m Heat pump water heater AMP Air Conditioning...
Page 78 '15 • HM-T-246 Case 2. Heat pump unit is installed higher the unvented cylinders ase 2. eat p mp nit is installed hi her the n ented c linders Negative pressure check valve Automatic air purge Relief valve in each cylinder Within 15m Pressure reducing valve Booster pump...
Page 79: Installation Location (Obtain Approval From The Customer When Selecting The Installation Area)
'15 • HM-T-246 (2) INSTALLATION LOCATION (Obtain approval from the customer when selecting the installation area) 2-1 Selecting the installation location ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Please note • • • • — — ≦...
Page 80 '15 • HM-T-246 2) In case that multiple heat pump water heaters are installed ★ ① Wall height≦H3 ≧L5 ≧L2 suction ≧L6 ≧L4 suction suction suction suction Wall height≦H4 ★ ★ ★ suction Wall height≦H1 Wall height≦H2 ② Wall height: No limit Unit: mm ★...
Page 81: Carrying In And Installation Of Unit
'15 • HM-T-246 (3) Carrying in and installation of unit CAUTION 3-1 Carrying in Please note 3-2 Notabilia for installation of heat pump water heater Rectangular hole each 2 holes in front and rear (a) Anchor bolt position Rectangular hole each 2 holes in front and rear 1350 Unit dimension...
Page 82: Water Piping Work
'15 • HM-T-246 (4) Water piping work 4-1 General description shows the flow direction of water Heat pump water heater 4-1.1 Outline of water piping ⑧ ② ① ③ ④ ⑪ ⑤ ⑨ ⑥ ④ ③ ⑤ ⑨ ⑦ ① ②...
Page 83: Drain Piping Work
'15 • HM-T-246 Right-angled expansion piping is prohibited Hot water storage unit Heat pump water heater Built-in pump Water piping Automatic air purge valve Automatic air purge valve 1/200 rising slop Air separator Installation sample of air purge ① ② ③...
Page 84 '15 • HM-T-246 4-2 Water piping work 4-2.1 Limitation of piping length between the heat pump water heater and the unvented cylinder 4-2.2 Pressure loss of the pipe and joint ① ② AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 85 '15 • HM-T-246 4-3 System diagram ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ ⑩ ⑪ ⑫ ⑬ ⑭ AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 86 '15 • HM-T-246 Air purge valve Pressure relief valve Air purge valve 3-way valve Hot water stop valve* Form B direction Hot water supply port From Heat pump water heater (Hot water outlet side) * In case that one heat pump unit is connected, this valve is not necessary Form C direction Cylinder...
Page 87: Insulation Work
'15 • HM-T-246 (5) Insulation work • • • Pipe Insulation material Piping sleeve Inatallation sample of the pipe at wall penetration 5-1 Waterprooﬁng work at the place where water pipe is passing through ○ Caulking (waterproof agent) Racking finish (forming paper+waterproof paper+galvanized steel sheet+paint) Filling insulation Insulation (glasswool, etc) Roof finish...
Page 88 '15 • HM-T-246 5-2 In case of connecting unvented cylinder 5-2.1 Allowable external head and piping resistance ① ② 5-2.2 Limitation of distance between the heat pump water heater and the unvented cylinder ① Feed water Heat pump water heater HW storage unit Within 15m AMP Air Conditioning...
Page 89: Electrical Wiring Work For The Heat Pump Water Heater
'15 • HM-T-246 (6) Electrical wiring work for the heat pump water heater Please install an earth leakage breaker without fail. use an impulse withstanding type one Please note • • • • The installation of an impulse withstanding type earth leakage breaker is necessary. do not lay electronic control wires (remote control and signal wires) and other high current cables together outside the unit AMP Air Conditioning...
Page 90 In case of Master unit only Power source: 3 phase 380/400/415V±5% 50/60Hz CWFV5 CWFV3 Earth leakage breaker 3 *1 (Impulse withstanding) Circuit breaker HEAT PUMP WATER HEATER Connector T1-4 CWFV T5-6 T7-9 A B X Y L1 L2 L3 N Terminal 1 In case of multiple master unit connected to a remote control individually, CWFV5 is required for each master unit.
Page 91 '15 • HM-T-246 CAUTION AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 92 '15 • HM-T-246 6-2 Precautions for power wiring to creating 200V±10% of power voltage for control line. START Caution Be sure to check the power source voltage on the power board, before connecting power cable to the unit. Is the power Y E S source voltage to be use 00V ±...
Page 93 '15 • HM-T-246 6-3 Connecting method of power cable (a) Method for leading out cables φ (b) Notabilia in connecting power cables Round type climped terminal Wiring terminal block climped terminal Wire size: thin Wire size: thick ・ (c) Heat pump water heater power source speciﬁcations: 3 phase 380V/400V/415V±5% 50/60Hz Please note ①...
Page 94: Electrical Wiring Work For The Unvented Cylinder
'15 • HM-T-246 (7) Electrical wiring work for the unvented cylinder Please install an earth leakage breaker without fail. an impulse withstanding type one Please note • • • • The installation of an impulse withstanding type earth leakage breaker is necessary. do not lay electronic control wires (signal wire) and other high current cables together.
Page 95: Hm-T-
'15 • HM-T-246 500L x 1 Hot water supply Hot water flow at operation to top up Form B At the welded point of the top end plate Hot water Cylinder 1 Tht-1 outlet circuit 3-way valve Hot water 1050 Tht-2 Form C ⇔...
Page 96 '15 • HM-T-246 1000L x 3 Hot water supply Hot water flow at operation to top up Form B At the welded point of the top end plate Cylinder 3 Cylinder 2 Cylinder 1 Hot water 3-way Tht-7 Tht-4 Tht-1 outlet circuit valve Hot water...
Page 97 '15 • HM-T-246 7-2 Wire connecting method Please note ◎ ◎ ◎ ◎ ◎ Hot water temperature sensor for unvented cylinder (Tht-1 to -9) Temperature (ºC) AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 98 '15 • HM-T-246 Terminal block Terminal block for temperature sensor Tht-1to -9 for solenoid valve CWFV (Locally procured) (Locally procured) MTH-Q4E MTH-Q5E MTH-Q3E Insulating treatment shall be done on other terminals Attached to the option parts MTH-Q1E or MTH-Q2E 1 Phase AC200V 50/60Hz Heat pump water heater Control PCB 7-3 Connection of signal wire...
Page 99 '15 • HM-T-246 7-4 Control setting when unvented cylinder is connected. ・・ The followings are examples to paste 9 sensors on the unvented cylinder. Example 1 For 3000Liter (6 x 500Liter) cylinder Hot water outlet Heat pump water heater Clean water and return Example 2 For 4000Liter (8 x 500Liter) cylinder...
Page 100 '15 • HM-T-246 7-5 Anti-freezing water circuit for unvented cylinder ② ① 3-way valve Hot water stop valve CWFV3 CWFV5 (Parallel system only) Heat pump water heater Form B Hot water supply port Hot water outlet circuit Unvented cylinder Clean water and return 3-way valve operation position ②...
Page 101 '15 • HM-T-246 7-6 Defrost operation for unvented cylinder Strainer Service valve at low pressure side Service valve at high pressure side /-0UN F /-0UN F N eedle valve Solenoid valve High pressure switch for hot gas bypass (H-) (SV HG) High pressure sensor Fan motor Fan motor...
Page 102: Control Setting
'15 • HM-T-246 (8) Control setting 8-1 General setting 1) Unit address setting This control system controls the communication among the controls consisted of multiple heat pump water heaters and remote con- trols by the micro-computer built in the each control. After setting address and the communication among the multiple heat pump water heaters is established, check the communication method by 7-segement display of the heat pump water heater.
Page 103 '15 • HM-T-246 3) Check dip switch setting Check the settings of following dip switches on the control P CB. " OFF" Input item Input item Dip switch Check item Dip switch Check item " ★ " shows factory default "...
Page 104 '15 • HM-T-246 4) Software switch setting E ach control and setting can be set by the software switch. P lease set the setting according to the following procedure mentioned in Data display Minimum unit Contents Display range P 0 piece (a) Unvented cylinder (b) Setting procedure of 7-segment display...
Page 105 '15 • HM-T-246 Control P CB on the heat pump water heater Coil resistance E xample of use Terminal arrangement − − − − ＋＋＋＋ board to break off from the original circuit. occurrence of sneak current. AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 106 '15 • HM-T-246 8-2 Control setting for recirculation hot water supply system culation return hot water temperature. change the control setting. This is all for the setting of the recirculation system control. changed. AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 107: Anti-Legionnaires' Disease Control
'15 • HM-T-246 (9) Anti-legionnaires’ disease control 9-1 Outline 9-2 Piping Take the pipe extending from the cylinder to the heat pump water heater from the bottom of the cylinder. countermeasures against legionella impracticable. ⇒ ⇒ 9-3 Sensor installation 500L x 6 Hot water supply Hot water flow at operation to top up Form B...
Page 108 '15 • HM-T-246 1000L x 3 Hot water supply Hot water flow at operation to top up Form B At the welded point of the top end plate Hot water Cylinder 3 Cylinder 2 Cylinder 1 Tht-4 Tht-1 3-way outlet circuit valve Hot water 1050...
Page 109 '15 • HM-T-246 3000L x 1 Hot water supply Hot water flow at operation to top up Form B At the welded point of the top end plate Hot water Cylinder 1 150 300 outlet circuit 3-way Tht-1 valve Hot water Tht-2 Tht-3 1050...
Page 110: Connection To Existing Cylinder
'15 • HM-T-246 (10) Connection to existing cylinder supply load. add a cylinder that can produce the thermal boundary layer. Tht-1 Tht-4 60% Tht-2 Tht-5 Tht-3 Tht-6 100% Existing cylinder cylinder Clean water and return ⇔ AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 111: Commissioning And Handover
'15 • HM-T-246 (11) Commissioning and handover 1) Before test run 1MΩ or bigger of insulation resistance can be detected by measuring with 500V meggar tester between power terminal and grounding. 100Ω or lower connected to the signal wiring terminal. Be sure to check resistance of signal wiring terminal. Be sure to turn the power on 6hours before starting operation in order to power source to the crankcase heater.
Page 112: Inspection Report
'15 • HM-T-246 (12) Inspection report 1) Project information Checker Date Heat pump water heater Hot water storage cylinder Model name Model name ① ② ③ ○: OK △: shall be revised ― : No item 2) Check list for installation Checked result Check items Standard...
Page 113 '15 • HM-T-246 ○: OK △: shall be revised ― : No item 3) Check list for commissioning Checked result Check items Standard ① ② ③ OFF? for details for details X and Y terminals See - TB? for details Is the power source voltage within the range of the ①...
Page 114 '15 • HM-T-246 Operation data of the heat pump water heater (Should attach MentePC data) [Date of data acquisition : Measured items Measured result ① ② ③ Items ℃ Feed water inlet temperature ℃ Water circuit Hot water outlet temperature ℃...
Page 115: The Behavior After Power Recovery
(14) The behavior after power recovery ○ P ower failure P eriod Date Target HW Setting P eak- Behavior Case backup function of power Behavior and time temperature amount of off cut time failure setting setting setting ＜ V alid TOP screen is displayed The unit is recovered as same status as before power failure.
Page 116: Installation Work For Remote Control
'15 • HM-T-246 PJZ012D103 3.2 Installation work for remote control This installation manual describes the installation methods and precautions related to the remote control. Use this manual together with the user’s manuals for the heat pump water heater and other option equipment. P lease read this manual carefully before starting the installation work to install the unit properly.
Page 117: Accessories & Parts Prepared At Site
'15 • HM-T-246 2. Accessories & parts prepared at site Accessories Remote control main unit, wood screw ( φ . x ) pcs, User' s Manual, Installation Manual (in CD-R) P arts prepared on site The max size for the wires used in the R/C case is Item name Q' ty Remarks...
Page 118: Installation And Wiring Work
'15 • HM-T-246 4. Installation and wiring work Dimensions (V iew from front side) P CB side (V iew from rear side) Fixing hole Terminal Sensor ① To remove the upper case from the bottom case of R/C • Inser rewdriver or the like in the recess at the lower part of R/C and twist it lightly to remove Take care to protect the removed upper case from moisture or dust...
Page 119 '15 • HM-T-246 4. Installation and wiring work (Continue) ⑤ thin wall part of the case. ⑥ Fix wires such that they will run around the terminal screws on the upper case of R/C. iring hole on ⑦ re not to pinch wires of R/C. the bottom case rom the "...
Page 120: Main/Sub Setting When More Than One Remote Controls Are Used
'15 • HM-T-246 5. Main/Sub setting when more than one remote controls are used. Up to two units of R/C can be used at the maximum for one heat pump water heater or one g roup One is main R/C and the other is sub R/C. R/C function Main Operation range is different depending on the main or sub R/C...
Page 121: Power Source And Initial Setting
'15 • HM-T-246 6. Power source and initial setting Set the main and sub R/C according to the display at the power on () If the main and sub are not set yet, [Select Main/sub set input] screen is displayed. (Screen ② ) When tapping the [Main] or [Sub] button, the initial setting starts.
Page 122: Installation Settings And Test Run
'15 • HM-T-246 7. Installation settings and Test run [TOP screen] ⇒ [Menu] ⇒ [Installation setting] ① TOP screen ② Menu screen () ② Menu screen () ③ Service password input ④ Installation settings ⑤ Installation date Set with [ ▲ ] [ ▼ ] buttons. Service password is "...
Page 123 '15 • HM-T-246 7. Installation settings and Test run (Continue) Test run procedure * When operating the unit initially, [Water pump test run] and [P rimary setting of operation] is required. () P lease prepare for the test run according to instruction described on the installation manual of the heat pump water heater. () Tap the Start button on the [ ⑩...
Page 124: User Environment (Simpliﬁed Setting For Operation Pattern)
'15 • HM-T-246 8. User environment (Simpliﬁed setting for operation pattern) This heat pump water heater is operated to top up hot water according to the target hot water amount set at each time zone. By selecting the operation pattern for the typical business type which is similar to your actual usage pattern of hot water, you can set the operation pattern easily.
Page 125: R/C Function Settings
'15 • HM-T-246 9. R/C function settings [TOP screen] ⇒ [Menu] ⇒ [R/C function settings] ① TOP screen ② Menu screen () ② Menu screen () ③ Service password input ④ R/C setting menu ⑤ Main/sub of R/C The service password is " " (Unable to change) ⑥...
Page 126: Service & Maintenance
'15 • HM-T-246 10. Service & Maintenance [TOP screen] ⇒ [Menu] ⇒ [Service & Maintenance] ① TOP screen ② Menu screen () ② Menu screen () ③ Service password input ④ Service & maintenance () ④ Service & maintenance () The service password is "...
Page 127 '15 • HM-T-246 10. Service & Maintenance (Continue) ⑨ Save HP Unit setting Delete history acknowledge Information The remote control can save the cumulative operation hours of the components for water and refrigerant circuit memorized in the heat pump water heater as backup.
Page 128: Setting And Operation Modes For Unvented Cylinder And Conﬁguration Of Master-Slave Units
'15 • HM-T-246 3.3 Setting and operation modes for unvented cylinder and conﬁguration of master-slave units (1) Introduction master unit only. (2) System diagram AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 129 '15 • HM-T-246 (3) Component list Part name Model General description ① Heat pump water heater For outdoor air temperature -° C ② For setting hot water amount and setting hot water temperature. ③ — （ For connecting heat pump water heater with unvented cylinder Wiring kit for unvented cylinder Connect to the water temperature sensor of unvented cylinder ④...
Page 130 '15 • HM-T-246 (4) Address setting P CB SW settings.  connected at the maximum.   S W and SW need to be set in the same way for master and slave units in the same OF F  SW4-7 SW4-8 combination is allowed.
Page 131 '15 • HM-T-246 Example of address setting for multiple unit connection Hot water cylinder Water pipe Water pipe Water pipe Water pipe Cylinder (Water supply, (Water supply, (Water supply, (Water supply, temperature Master-slave hot water outlet) hot water outlet) hot water outlet) hot water outlet) Sensor wire communication wire...
Page 132: Design Guidelines For Co 2 Heat Pump Water Heater With Under Floor Heating And Water Recirculation
'15 • HM-T-246 3.4 Design guidelines for CO2 heat pump water heater with under ﬂoor heating and water recirculation loop (1) Introduction E xample and feasibility study of CO Since the range of hot water temperatures available from CO Mixing valve 60˚C 60˚C 24.6L/min...
Page 133 '15 • HM-T-246 (3) Water piping connection The distance between heat pump water heater and hot water storage unit should be as shorter as possible from a view point of P ressure loss of pipe table Flow volume E lbow Gate valve Y -type strainer 0....
Page 134 '15 • HM-T-246 (5) Operation control of CO2 heat pump water heater (Detection of reach and un-reach temperature) heat pump water heater operation control Operation start Hot water storing operation starts if this sensor detects Heat souce No.1 sensor the un-reach state. unit operation (*1) Heat souce...
Page 135 '15 • HM-T-246 (b) Quantity of heat to be retained always in the cylinder Mixing valve 18.4 L/min 64.5L/min 35˚C (35˚C) No.1 sensor Floor heating panel No.2 heat pump Gas cooler sensor water heater 46.1L/min Defrosting (25˚C) Max. floor 18.4L/min circulation heating load 45kW pump...
Page 136: External Input And Output
'15 • HM-T-246 3.5 External input and output (1) External input terminal speciﬁcations ★ ★ CnS operation is also canceled. ★ CnS Set it to master and slave units ★ individually. E xternal input contact ★ CnG ★ CnG not start operation. Operation signal is also output Operation output DCV output...
Page 137 '15 • HM-T-246 (2) Control of CO heat pump water heater operation by external input and output (a) Outline This chapter explains how to control Start Stop operation of CO temperature sensors can be disabled. (b) Fundamental concept and precaution heat pump water heater controls Start temperatures detected by the cylinder temperature sensors.
Page 138 '15 • HM-T-246 Table: External inputs Caution System full-stop input Stopped when open. E xternal Derate input Input when open. contact input Snow protection fan control input Set with main and sub devices respectively. Operation output operation. DC V E xternal E rror output output...
Page 139: Installation Procedure
'15 • HM-T-246 (e) Other setting (Mandatory) always on the P CB of hot water supply unit. This is normal. (3) External input instructions installation manual The instructions are used to control the operation of the CO heat pump water heater from an external control panel. Warning •...
Page 140 '15 • HM-T-246 [In case of operation control by external control panel] • P lease follow these setting stops below when connecting to hot water temperature sensors to the cylinder with the CO heat pump water heater. Disable the power failure security in order to comply with the operation of the external control panel.
Page 141 '15 • HM-T-246 Schematic * water heater PCB Blue Black White External output Black Operation output : CnH (BLUE) Error output : CnY (WHITE) CnZ1 7-segment setting output : Black CnZ1 (RED) Cnz2 (BLACK) CnZ2 Black Black 4 point unit relay (More than 750 coil resistance) Set value Function...
Page 142 '15 • HM-T-246 3.6 Guideline for indoor installation of CO heat pump water heater concentration of CO generates drain water. Points for indoor installation • P rovide emergency measures against leakage of CO gas. equipment. • Drain water can be disposed safely. (1) Emergency measures for refrigerant leakage Measures to secure safety is necessary against an accidental leak of CO it is assumed that the unit is...
Page 143 '15 • HM-T-246 Necessary room space: 287 m or larger [Caution] When necessary inlet space in the room and necessary floor area Air suction opening a) Limit is lower than are not available, a Hot water 1.5 m because leaked heat pump water heater supply pipe accumulates at...
Page 144 '15 • HM-T-246 (2) Indoor ventilation capability and safety Since the unit is a CO equipment. noted that the blow air capacity of CO heat pump water heater varies roughly as follows depending on atmospheric temperatures. 0 m ° C or lower °...
Page 145 '15 • HM-T-246 (3) Drain water disposal Drain water is released from the piping of CO *The melting water and drain water are released from the drain outlet on the base. collective drain pan to dispose the drain water properly. Collective drain kit Collective drain pan [Condition of dewing water in summer]...
Page 146: General Description Of Servicing
'15 • HM-T-246 4. SERVICING 4.1 General description of servicing (1) Test run (a) Kinds of test run (Deﬁnition of terms) Operation mode after Terms Starting method E nding method Complement test run 1 . W ater pum p test run test run with one of ・...
Page 147 '15 • HM-T-246 (b) Test run procedure Caution the night tariff is not applied. b. Implement water pump test run Check the heat pump unit is in P ause mode and switch ON the SW5-2 on the PCB of the heat pump unit. ⇒...
Page 148 '15 • HM-T-246 switch OFF the SW5-2 on the PCB of the heat pump water heater and stop operation of water pump test run. switching ON the SW5-1 on the PCB of the heat pump water heater. ⇒ ⇒ ⇒ ⇒...
Page 149 '15 • HM-T-246 make setting of the operation pattern with R/C according to the hot water supply load to meet customer’s requirement and start operation with Screen - Caution start operation. the message of " It is in operation by standby" is displayed on the TOP screen of R/C Screen - Caution ...
Page 150 (c) Standard operation data Water temperature Operating state WB Inlet temperature Outlet temperature Compressor speed E E V G opening E E V H opening Tho-D Tho-S Water pump CWFV opening ℃ ℃ ℃ ℃ ℃ ℃ MP aG MP aG MP aG P ulse P ulse Operation to top up in summer...
Page 151 '15 • HM-T-246 (2) Method to purge CO refrigerant refrigerant refrigerant like dry ice. may stay. residual refrigerant merged into the refrigerant oil by using evacuation pump. (3) Method of air tightness test gas bomb. only the EEVG1 becomes fully closed. gas bomb to the service valves of both high pressure side and low pressure side with charging hoses through a gauge manifold.
Page 152 '15 • HM-T-246 minutes to complete charging ℃ refrigerant (5) Draining located in the heat pump water heater. (6) Charging water to the unvented cylinder opening the drain valve at the bottom of the cylinder and charge water to the cylinder again. AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 153 '15 • HM-T-246 (2) Limited unit control Master Sub Sub or remote control Demand rates on the display at that time are as follows. Master -segment Mente P C (3) All units defrost control [If the defrost starting conditions are satisﬁed on the master or slave unit on the master-sub system, it is defrost operation on all units in the system.] Sub ①...
Page 154 '15 • HM-T-246 (4) External output of hot water amount Width setting with 7-segment: P95 ・ Initial value 10% ・ Range (10 – 30) External output ON External output OFF Cancel point :Value of 7-segment: P94 + P95 7-segment: P94 (Up to max.
Page 155 '15 • HM-T-246 (5) Checking of operation of water-side solenoid valves CWFV3, 5 water heater to OFF V alve opening or closing can be changed as follows. CWFV CLOSE SW- CLOSE （ supply water side ） Actuator Valve flange Indicator Fig.
Page 156: Error Code List
'15 • HM-T-246 4.2 Error code list LE D on heat pump water heater -segment control Contents of inspection display E rror code Green P ower line anomaly Stay off Stay off Communication error between remote control and heat pump water heater E 0 Stay off E xcessive connected number of heat pump water heaters to the remote control...
Page 157 '15 • HM-T-246 LE D on heat source water heater -segment control Contents of inspection display Green E rror code Stay off Stay off Stay off sound and Stay off sound and Stay off AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 158 '15 • HM-T-246 Maintenance code -segment display display Items Compressor operation hours When the cumulative operation hours of compressor oP E - When the cumulative operation hours of compressor malfunction by the simple remote monitoring equipment When the cumulative operation hours of compressor has oP E - When the cumulative operation hours of compressor has When the cumulative operation hours of compressor has...
Page 159: Troubleshooting
'15 • HM-T-246 4.3 Troubleshooting Green Error code Content P ower source anomaly Remote control: Heat pump Keep Stay off water heater flashing . Troubleshooting Diagnosis Countermeasure Is there no loose connection of Correct it wiring harness for remote control? .
Page 160 '15 • HM-T-246 Green Error code Content Remote control: Heat pump on the remote control Stay off Stay off water heater . Troubleshooting Diagnosis Countermeasure No display on the remote control after the power is supplied Is there DC10V or higher voltage on .
Page 161 '15 • HM-T-246 Green Error code Content Communication error between Remote control: Heat pump Keep remote control and heat pump water heater Stay off 7-segment display: N o display water heater flashing . Troubleshooting . Applicable model All models Diagnosis Countermeasure Does it return correctly Malfunction by noise...
Page 162 '15 • HM-T-246 Green Error code Content E xcessive N o. of heat pump Remote control: E 0 Heat pump Keep water heaters connected to one remote control Stay off water heater flashing . Troubleshooting . Applicable model All models Diagnosis Countermeasure Are more...
Page 163 '15 • HM-T-246 Green Error code Content Duplicated address N o. of heat pump Remote control: E Heat pump Keep 1- time water heater Address setting error of heat pump water heater 7-segment display: E water heater flashing flash .
Page 164 '15 • HM-T-246 Green Error code Content Open phase of power line Remote control: E Heat pump Keep 1-time 7-segment display: E water heater flashing flash . Troubleshooting . Applicable model All models Diagnosis Countermeasure • Check the operation status and record it.
Page 165 '15 • HM-T-246 Green Error code Content Discharge pipe Remote control: E Heat pump Keep 1-time temperature anomaly 7-segment display: E water heater flashing flash . Troubleshooting . Applicable model All models Diagnosis Countermeasure Is there any Specify the leak point and leak of refrigerant? rectify it Is the...
Page 166 '15 • HM-T-246 Green Error code Content Outdoor heat exchanger sensor (Tho-R, , , ) anomaly Remote control: E Heat pump Keep 7-segment display: E - to - water heater flashing Gas-cooler temperature sensor (Tho-G, , Tho-W, ) anomaly * E - to -: Tho-R to -R, E -, -: Tho-W, -W, E -, -: Tho-G, -G .
Page 167 '15 • HM-T-246 Green Error code Content Outdoor air temperature Remote control: E Heat pump Keep 1-time sensor (Tho-A) anomaly 7-segment display: E water heater flashing flash . Troubleshooting . Applicable model All models Diagnosis Countermeasure • Check the operation status and record it.
Page 168 '15 • HM-T-246 Green Error code Content Discharge pipe temperature sensor (Tho-D) anomaly Remote control: E Heat pump Keep 7-segment display: E -, water heater flashing Intermediate receiver inlet temperature sensor (Tho-M) anomaly * E -: Tho-D, E -: Tho-M .
Page 169 '15 • HM-T-246 Green Error code Content High pressure anomaly Remote control: E 0 Heat pump Keep 1-time (H- activated) 7-segment display: E 0 water heater flashing flash . Troubleshooting . Applicable model All models Diagnosis Countermeasure • Check the operation status Save the data 30 minutes and record it.
Page 170 '15 • HM-T-246 Green Error code Content P ower transistor overheat Remote control: E (E ) Heat pump Keep 1-time 7-segment display: E (E ) - water heater flashing flash . Troubleshooting . Applicable model All models Diagnosis Countermeasure •...
Page 171 '15 • HM-T-246 Green Error code Content Current cut Remote control: E Heat pump Keep 1-time 7-segment display: E water heater flashing flash . Troubleshooting . Applicable model All models Diagnosis Countermeasure • Check the operation status and record it. Save the Mente PC data of 30 minutes •...
Page 172 '15 • HM-T-246 Communication error Green Error code Content between inverter P CB and control P CB Remote control: E Heat pump Keep 1-time High pressure anomaly (H- activated) 7-segment display: E - water heater flashing flash . Troubleshooting .
Page 173 '15 • HM-T-246 Communication error Green Error code Content between inverter P CB and control P CB Remote control: E Heat pump Keep 1-time High pressure anomaly (H- activated) 7-segment display: E - water heater flashing flash . Troubleshooting .
Page 174 '15 • HM-T-246 Green Error code Content Heat pump water heater Remote control: E Heat pump Keep DC fan motor anomaly 7-segment display: E -, water heater flashing . Troubleshooting . Applicable model All models Diagnosis Countermeasure • Check the operation status and record it.
Page 175 '15 • HM-T-246 Green Error code Content Low pressure anomaly Remote control: E Heat pump Keep 1-time 7-segment display: E - water heater flashing flash . Troubleshooting . Applicable model All models Diagnosis Countermeasure Before starting operation, is the power The refrigerant may to the heat pump water heater be accumulated in the...
Page 176 '15 • HM-T-246 Green Error code Content Anomaly of hot water temperature sensor for Remote control: E Heat pump Keep water heater flashing unvented cylinder (Tht- to -) 7-segment display: E - to - * E - to -: Tht- to -, .
Page 177 '15 • HM-T-246 Green Error code Content Suction pipe temperature sensor (Tho-S) anomaly Remote control: E Heat pump Keep water heater flashing Injection inlet temperature sensor (Tho-IN J) anomaly 7-segment display: E -, - * E -: Tho-S, E -: Tho-IN J .
Page 178 '15 • HM-T-246 Green Error code Content High pressure/Intermediate pressure/ Remote control: E Heat pump Keep water heater flashing Low pressure sensor anomaly (P SH/P SM/P SL) 7-segment display: E -, -, - * E -: Low pressure sensor, E -: High pressure sensor.
Page 179 '15 • HM-T-246 Green Error code Content Remote control: E Heat pump Keep -time Under-dome temperature sensor (Tho-C) anomaly water heater flashing 7-segment display: E - . Troubleshooting . Applicable Model All models Diagnosis Countermeasure ・ Check the operation status and record it.
Page 180 '15 • HM-T-246 Green Error code Content P owe transistor temperature sensor (Tho-P ) anomaly E Remote control: -time Heat pump Keep water heater flashing E - 7-segment display: . Troubleshooting . Applicable Model All models Diagnosis Countermeasure ・ Check the operation status and record it.
Page 181 '15 • HM-T-246 Green Error code Content Compressor anomaly by loss of synchronism Remote control: E Heat pump Keep -time water heater flashing 7-segment display: E - . Troubleshooting . Applicable Model All models Diagnosis Countermeasure ・ Check the operation status and record it.
Page 182 '15 • HM-T-246 Green Error code Content Remote control: E Compressor startup failure Heat pump Keep -time water heater flashing 7-segment display: E - . Troubleshooting . Applicable Model All models Diagnosis Countermeasure ・ Check the operation Save the Mente PC data of 30 minutes before stopping status and record it.
Page 183 '15 • HM-T-246 Green Error code Content Remote control: E 0 Rotor position detection failure Heat pump Keep -time water heater flashing 7-segment display: E 0- . Troubleshooting . Applicable Model All models Diagnosis Countermeasure ・ Check the operation status and record it. Save the mente PC data of 30 minutes before stopping power source voltage...
Page 184 '15 • HM-T-246 Green Error code Content Remote control: E E mergency stop Heat pump Keep -time water heater flashing 7-segment display: E . Troubleshooting . Applicable model All models Diagnosis Countermeasure ・ Check the operation status and record it. ・...
Page 185 '15 • HM-T-246 Green Error code Content Water pump anomaly () Remote control: E Heat pump Keep -time In case the motor does not rotate water heater flashing 7-segment display: E . Troubleshooting . Applicable Model All models Diagnosis Countermeasure When starting...
Page 186 '15 • HM-T-246 Water pump anomaly () Green Error code Content In case the motor rotates at anomously high speed Remote control: E Heat pump Keep -time (Disable to control rotation speed or rotate at max speed) water heater flashing 7-segment display: E ...
Page 187 '15 • HM-T-246 Green Error code Content Communication error between CP U of control P CBs Remote control: E Heat pump Keep -time water heater flashing 7-segment display: E . Troubleshooting . Applicable Model All models Diagnosis Countermeasure Are the wiring harnesses and C P U may be malfunctioned...
Page 188 '15 • HM-T-246 Green Error code Content It can operate but no hot water comes out () Remote control: N o display Heat pump Keep Stay water heater flashing 7-segment display: N o display . Troubleshooting . Applicable Model All models Diagnosis Countermeasure to short circuit of air...
Page 189 '15 • HM-T-246 Green Error code Content It can operate but no hot water comes out () Remote control: N o display Heat pump Keep Stay water heater flashing 7-segment display: N o display . Troubleshooting . Applicable Model All models Diagnosis Countermeasure Check availability to operate heat pump water heater...
Page 190 '15 • HM-T-246 Green Error code Content It can operate but no hot water comes out () Remote control: N o display Heat pump Keep Stay water heater flashing 7-segment display: N o display . Troubleshooting . Applicable Model All models Diagnosis Countermeasure Check availability to operate heat pump water heater...
Page 191 '15 • HM-T-246 Green Error code Content Anomalous sound and vibration () Remote control: N o display Heat pump Keep Stay water heater flashing 7-segment display: N o display . Troubleshooting . Applicable Model All models Diagnosis Countermeasure Is the anomalous sound heard during operation or just Heat pump water heater is...
Page 192 '15 • HM-T-246 Green Error code Content Anomalous sound and vibration () Remote control: N o display Heat pump Keep Stay water heater flashing 7-segment display: N o display . Troubleshooting . Applicable Model All models Diagnosis Countermeasure Is the anomalous sound heard during operation or just Heat pump water heater is not a cause.
Page 193 '15 • HM-T-246 (1) Checking procedure of inverter PCB ) Setup procedure of checker. a) P ower OFF (Turn off the breaker). b) Remove the terminal cover of compressor and disconnect the wires (U, V , W) from compressor. c) Connect the wires U (Red) , V (White) and W (Black) of checker to the terminal of disconnected wires (U, V , W) from compressor respectively.
Page 194 '15 • HM-T-246 (3) Outdoor unit check points Check items with the *mark when the power is ON . Do not start the unit during checking for your safe. AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 195: Component Replacement As A Guide
4.4 Component replacement as a guide For maintenance, check and preventive maintenance, please note implemetation to replace components We would like to ask all customers owning this product to have a periodical maintenance and to replace components by our authorized service man in order to maintain the safety of product and to keep its function in good condition.
Page 196: Disassemble And Reassemble Method
'15 • HM-T-246 4.5 Disassemble and reassemble method (1) Compressor Replacement Procedure (a) Purge CO refrigerant Connect the charge hoses to the service valves and purge CO refrigerant. (It is available to purge CO in the air) N ote : If purging refrigerant rapidly, the refrigerant may become frozen inside of service valve and cannot be purged.
Page 197 '15 • HM-T-246 3) Remove the power cables from compressor Loosen screws and remove the terminal cover. Screws Loosen screws and disconnect the power cables. N ote: Since the terminals are facing upward, it had better to use a stabilizing type screw driver.
Page 198 '15 • HM-T-246 5) Remove temperature sensors Remove temperature sensors after removing insulations . Tho-IN J (Injection temperature sensor) . Tho-D (Discharge temperature sensor) . Tho-C (Under-dome temperature sensor) Tho-INJ1 Tho-C1 Tho-D1 6) Loosen 3 nuts of compressor mounting bolts bolt in the rear.
Page 199 '15 • HM-T-246 (c) Dismounting compressor 1) Disconnect pipes by cutting ① Suction pipe Before disconnection work, be sure to check the residual pressure in the unit is 0M P a. (It is very dangerous to brazing pipe too hastily.) It is better to disconnect the pipe by cutting, because the pipe is thicker and the insertion depth of pipe is deeper.
Page 200 '15 • HM-T-246 3) Dismount the compressor Incline the top of compressor to foreside and take it out obliquely upward. N ote: When taking out compressor, be careful not to hit it against the suction pipe located at the rear lower left side of compressor.
Page 201 '15 • HM-T-246 (d) Mounting new compressor 1) Mounting new compressor P lace the new compressor on to the mounting base without hitting the suction pipe located at the rear lower left side of compressor. 2) Tighten the nuts of compressor mounting bolts P lace the new compressor in right position on the mounting bolts and tighten the nuts Bolt positions...
Page 202 '15 • HM-T-246 3) Brazing ① Discharge pipe Be sure to do masking around the brazing place. (The places not only around discharge pipe but also around suction pipe and gas injection pipe) N ote: Be careful to braze pipes without any gas leak later on, because the pipe is thicker and pipe insertion depth is deeper and then upper space is rather tight for brazing work.
Page 203 '15 • HM-T-246 (e) After mounting new compressor 1) Attaching crank case heater and under-dome temperature sensor Be sure to attach them before wrapping the insulation jacket around the compressor. 2) Wrapping the insulation jacket around the compressor Insert the insulation jacket from left side of compressor and wrap it around compressor.
Page 204 '15 • HM-T-246 4) Connecting the power cable to the compressor White Blue Front 5) Attaching terminal cover and bundling the wires Hook the back of terminal cover to the latch and tighten screws. The unbound wires shall be put back the way they were. (f) Charging refrigerant ) Air tightness test should be done with N gas by pressurizing up to MP a...
Page 205 '15 • HM-T-246 (2) Inverter PCB replacement procedure (a) Replacement work of inverter PCB (on the third layer) 1) Loosen screws The mounting board of the first layer (on the front) the second layer (on the back) can be removed like as opening door.
Page 206 '15 • HM-T-246 ② At the bottom of control box ③ Open the mounting board of ﬁrst and second layer This mounting board supported at right edge as supporting point can be opened from left side. 2) Inverter PCB Following the process ① to ③ enables easy access to the inverter P CB without disconnecting wires.
Page 207 '15 • HM-T-246 (3) Replacement procedure of power PCB and water pump PCB (a) Replacement work of power PCB (on the second layer) The second layer ① Loosen 4 screws ② Disconnect the wire going to the water pump PCB Disconnect CN connector on the water pump P CB.
Page 208 '15 • HM-T-246 ③ Disconnect the wires going to control PCB Disconnect CN B connector (Green) and CN X connector ( Y ellow) on the control P CB. Disconnect CNB1 Disconnect CNX1 ④ Cut the tie-up band Cut the tie-up band Cut the tie-up band ⑤...
Page 209 '15 • HM-T-246 ⑦ Disconnect the wire going to control PCB Disconnect C N V connector (White), C N V connector (Y ellow) and CN V connector (Black) at the upper center part of control P CB. (Check the detailed position of connector with the wiring diagram or control P CB Disconnect drawing)
Page 210 '15 • HM-T-246 (4) Dismounting water heat exchanger (a) Remove the insulation The insulation will be reused. (b) Detach 4 screws(front side x2 , back side x2) from the base. It' s no need to detach the insulation from the gas-cooler. AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 211 '15 • HM-T-246 (5) Replacement procedure of water heat exchanger (Gas cooler) (a) Removal of residual water in the water heat exchanger 1) Remove residual water in the water heat exchanger (from 2 ports) For air purge For air purge Turn the air purge valve and drain valve to open fully and discharge residual water For drainage...
Page 212 '15 • HM-T-246 3) Disconnect the water pipes and ThoG1 sensor ( at 2 positions) ① The positions to disconnect ② Disconnect the water pipes AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 213 '15 • HM-T-246 4) Disconnect ThoG1 sensor Detach the tie wrap band and insulation, and disconnect the ThoG sensor. When disconnecting the sensor, be careful not to damage it. 5) Cut the refrigerant pipe of water heat exchanger ① Inlet side of refrigerant pipe Before cutting the refrigerant pipe, remove the drain hose.
Page 214 '15 • HM-T-246 6) Dismount the water heat exchanger If the center pillar cannot be removed, pull out the water heat 7) Clean the internal of new gas-cooler Before replacement, supply water(about L or more) to the internal of new gas-cooler. Tilt it several times to the left and right, and drainage.
Page 215 '15 • HM-T-246 9) Connect the water pipe When connecting the water pipe, be sure to replace the O-ring to new one. AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...
Page 216 '15 • HM-T-246 4.6 Cleaning procedure of CO water heater gas cooler Foreign matter, and scaling could build up inside the gas cooler of the unit in which CO depods depend on water quality. If it becomes too thick, it could effect flow rate and heating capacity. COP could drop or unstables control could also lead mismatch of hot water outlet temperature compared to the target temperature.
Page 217 '15 • HM-T-246 (2) Cleaning procedure <Symptom of accumulated scale> Evaluation if clean up required. Water pump speed (Upper limit 4,000 min ), CWFV1 (Upper limit Judgment for need of washing 100%) nearly at upper limit value Tho-W2 > Target hot water outlet temperature + 3˚C (Same as the Heat pump water heater power source OFF target value, if it is normal.) Tho-G3, Tho-W1 higher than 15˚C (Approx.
Page 218 '15 • HM-T-246 (3) Cleaning instructions 1) Turn OFF the power source to the heat pump water heater. 2) Connect pipes. -) Remove the front panel (control BOX side) and the rear panels ( pcs). N ote) Remove the fastener at C in order to remove the same at B. Screw Hot water outlet pipe joint -) Connect hoses from the washing equipment to A and B.
Page 219 '15 • HM-T-246 3) Set the washing equipment (provided locally). (Valve direction adjustment, water drain valve closure, etc.) 4) Feed water to the washing equipment and devices. (15 – 20 L) N ote) Check for leak from the piping. 5) Turning on the power source of the washing equipment, start the washing pump. Bleed air also from the piping at this time.
Page 220 '15 • HM-T-246 11) Add the neutralizer gradually to neutralize the solution in the piping. (To pH 6 – 8) N ote) Add the neutralizer carefully, gradually paying attention to the foam created chemical reaction, during the especially adding suddenly neutralizer. N ote) Take care to avoid the air foam being trapped in the water pump.
Page 221: Method Of Draining Water From Gas Cooler
'15 • HM-T-246 4.7. Method of draining water from gas cooler If the heat pump water heater is left without power source in winter, water in the gas cooler may freeze, damaging the heat deemergesed for long time. (1) Products produced before November 2013 1) Close the valves at the hot water supply and the water supply pipe sides.
Page 222 '15 • HM-T-246 3) Open the drain valve C to drain water. Close the valve after draining. Valves A and B are not used on the units produced before November 2013. For the method of water draining from units equipped without the valves A and B, refer to separate data.
Page 223 '15 • HM-T-246 5) Blow air from the hot water supply pipe side after opening the valve C and closing the water return side by a hand. When water has been drained completely, close the valve C. 6) Remove the quick fasteners indicated with the arrow, 2 places suck and remove water accumulated in the U section of pipe using a syringe, or other.
Page 224 '15 • HM-T-246 (2) Products produced after January 2014 1) Close the valves at the hot water supply and the water supply pipe sides. Arrows indicate water flow directions. Heat pump water heater Configuration of water pipes 2) Remove the service panels both at the front and the rear. Air bleed valve Flow regulating valve CWFV1...
Page 225 '15 • HM-T-246 3) Open the drain valve C to drain water. Close the valve after draining. 4) Disconnect the joints from the hot water supply and the water return pipe sides. Blow air from the hot water supply pipe joint till no water is forced out from the water return pipe any more. * When using a nitrogen gas container, or other, always set the pressure no higher than 0. MP a.
Page 226: Segment Display And Compressor Stop Factor
'15 • HM-T-246 4.8 7-segment display and compressor stop factor (1) 7-segment code (P) list Following list shows the codes used for the setting of option functions and for the adjustment of parameters at site. For the methods to change settings, refer to the -segment setting procedure on the page 0. Code N o.
Page 227 '15 • HM-T-246 Code No. Data display Data display range Minimum unit Remarks 0: (Factory default) 0: Operation output 0 ‐ 0 assignment 1: Error output (CN H) 2: Compressor ON output 3: Fan ON output 4: Water shortage output 5: Water pump ON output 6: Anti-freezing circuit output 7: Defrost operation output...
Page 228 '15 • HM-T-246 (2) 7-segment code (C) list Code No. Contents of display Data display range Minimum unit Remarks <Sensor & actuator> 0 ‐ 130 CM1 operating frequency 0 ‐ 130 CM2 operating frequency L,-20 ‐ 70 1 ℃ Tho-A Outdoor air temperature L,-20 ‐...
Page 229 '15 • HM-T-246 Code No. Contents of display Data display range Minimum unit Remarks Order of 100 ： CWFV5 0 ， 1 ― Order of 10 ： CWFV6 CWFV opening (0 ； Close, 1 ； Open) Order of 1 ： Spare Order of 100 ：...
Page 230 '15 • HM-T-246 Operation mode Cylinder type In case of day off setting. Vented Stop Available Available Unvented Vented Top up operation Available Unavailable Unvented Vented Available Keep warm operation Available (Vented cylinder only) Unvented Unavailable Vented Anti-freezing operation Available Available (*1) (Water pump work only) Unvented...
Page 231 '15 • HM-T-246 (3) Compressor stop factor １．１．Comp stop factor(Outline) Comp stop factor(Outline) be confirmed the number of comp stop factor from mente PC or 7seg (i) Compressor stop factor () is caused by HP protection control. This control is caused by lack of supply water due to pipe (C88).
Page 232 '15 • HM-T-246 Compressor stop factor Number When power ON Ambient temperature sensor Heat exchanger temperature sensor 1 (Tho-R1) Heat exchanger temperature sensor 2 (Tho-R2) Heat exchanger temperature sensor 3 (Tho-R3) Heat exchanger temperature sensor 4 (Tho-R4) Discharge pipe temperature sensor 1 (Tho-D1) Discharge pipe temperature sensor 2 (Tho-D2) Suction pipe temperature sensor 1 (Tho-S1) Suction pipe temperature sensor 2 (Tho-S2)
Page 233: Compatibility Table For Water Pump
Ex. Normal operation → Keep warm operation(Vented cylinder only) 4.9 Compatibility table for water pump Parts number Remark Model SSA451A010A SSA451A010B ESA30E-25 ESA30E-25/A ESA30E-25/B ESA30E-25/C Corresponded to Lot11 N ote) When changing the water pump, refer to above list. AMP Air Conditioning...
Page 234: How To Reset The Accumulated Water Pump And Compressor Operating Time
'15 • HM-T-246 4.10 How to reset the accumulated water pump and compressor operating time 【Timing to be displayed about periodical check 1, 2 & oPE-1 ～ 3,11 ～ 13】・ Q-ton announce the maintenance code and periodic check by the cumulative operating time of the water pump and compressor.
Page 235: Reference For Control Pcb Replacement
'15 • HM-T-246 4.11 Reference for control PCB replacement When changing control PCB, make sure to save/transfer below data as following below procedure. Item Contents 60 90 ℃ Target HW temperature Accumulated compressor operating time 0 255 Accumulated water pump operating time 0 255 <P rocedure for data save>...
Page 236: Power Off In A System With Multiple Units
'15 • HM-T-246 4.13 Power off in a system with multiple units (1) In case of 1 remote control & multiple units (a) Prior to W23R-2.1 If 1 group is OFF in combination system, all of unit can not restart by itself. If 1 group is OFF in combination system, all of unit can not restart by itself.
Page 237 '15 • HM-T-246 ③ If the unit is power ON again, communication will re-start. But operation status will be stop. ④ Therefore please press Run/Pause button on R/C. At this time E1 will be reset. 「Unit protection stop」 Power Will still be displayed. source breaker Press Run/Pause...
Page 238: Additional Information For Cylinder Temperature Sensor Connection
'15 • HM-T-246 4.14 Additional information for cylinder temperature sensor connection (1) Mounting method of temperature sensor When attaching the temperature sensors on the hermetic type hot water cylinder, take the following cautions into consideration. ℃, with care to stick the sensors firmly to the surface of cylinder.
Page 239 Air-Conditioning & Refrigeration Divion 16-5, Konan 2-chome, Minato-ku, Tokyo,108-8215 Japan http://www.mhi.co.jp Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. © Copyright MITSUBISHI HEAVY INDUSTRIES, LTD. AMP Air Conditioning www.ampair.co.uk | sales@ampair.co.uk...

Mitsubishi Heavy Industries ESA30E-25 Technical Manual

1 General Description

2 Specifications

3 Application Data

4 Servicing

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