A-Class Air Source Heat Pump A12M / A16M: Installation Manual IMPORTANT – THIS MANUAL MUST BE LEFT WITH THE USER AFTER INSTALLATION, INCLUDING THE HAND-OVER FORM AT THE BACK, WHERE THE INSTALLER SHOULD RECORD KEY INFORMATION DURING COMMISSIONING. 8/60472/0 Issue 1.
Overall View Water Outlet Water Inlet Name Plate Figure 1(b): Position of heat pump Figure 1(a): Outer dimensions of heat pump name plate and connections Figure 1 (c) : Internal components of heat pump ii
Contents Introduction 1 Scope of Delivery 1 Pre-Installation Advice 1 3.1 Warnings 1 3.1.1 Handling & Transport 1 3.1.2 General 2 3.1.3 Safety 2 3.1.4 Maintenance 2 3.1.5 Electrical Warnings 2 3.2 Intended Use 2 3.3 Legal 2 3.4 Heat Pump Sizing 3 3.5 Site Selection 3 3.5.1 Location of Heat Pump 3 3.5.2 Heat Pump Placement and Fixing 3 3.6 Plumbing - Preparation 4 3.6.1 Buffer Tank 5 3.7 Electrical Connections - Preparation 5 Installation 6 4.1 Plumbing 6 4.
7.1 General/Schematic 14 7.2 Waterside Check 14 7.2.2 Temperature Check 15 7.3 Electrical Connections 15 7.4 Water Flow Check 15 7.5 DHW Setup 16 7.5.1 Electrical Connections (DHW) 16 7.5.2 DHW Test 17 7.6 Disinfection 17 7.7 Heating Curves 18 8 Additional Installer Menu Options 19 8.1 Message Log 19 8.2 Output Tests 19 8.3 Defrost 19 8.4 Operating Data 19 8.
Pack 1: SPACE HEATING AND DIMPLEX A-Class CYLINDER A Class Heat pump A12M / A16M Hydraulics Kit A which includes: ACCHYPK User interface (UI) 1754600 Pump - UPM GEO 25-85 180 (70mm cable) 1755740 2 x Circulation Pump Gate Valve 11/2 "swivel to 28mm comp 2 x Washer 30.1x21x2mm 1756090 ERES straight Spring loaded by-pass valve (22mm comp fitting) 1755780 3 port diverting valve (28mm comp.
Pack 2: SPACE HEATING AND DIMPLEX STANDARD HEAT PUMP CYLINDER A Class Heat pump A12M / A16M Hydraulics Kit A which includes: ACCHYPK User interface (UI) 1754600 Pump - UPM GEO 25-85 180 (70mm cable) 1755740 2 x Circulation Pump Gate Valve 1"1/2 swivel to 28mm comp 2 x Washer 30.1x21x2mm 1756090 ERES straight Spring loaded by-pass valve (22mm comp fitting) 1755780 3 port diverting valve (28mm comp.
Pack 3: SPACE HEATING ONLY A Class Heat pump A12M / A16M Hydraulics Kit B which includes: ACSHYPK User interface (UI) 1754600 Pump - UPM GEO 25-85 180 (70mm cable) 1755740 2 x Circulation Pump Valve Gate 1"1/2 swivel to 28mm comp 2 x Washer 30.
1 Introduction Thank you for choosing a Dimplex Heat Pump. The Dimplex A-Class heat pump provides outstanding performance to maximise year-round efficiency, regardless of the weather conditions. It can deliver high output and high temperatures even at low outside air temperatures of -7°C. The sophisticated controller makes the system easy to use and there are many more technological innovations including a scroll compressor that uses enhanced vapour injection.
return isolation valve provided in the hydraulics pack has a built in strainer to help prevent debris entering the condenser and must be fitted. 3.1.2 General Installation and any service work on the heat pump may only be performed by authorised and qualified installer and after-sales service technicians. NOTE: During the commissioning of the domestic hot water cylinder, ensure that the cylinder is full and no water is drawn from the cylinder as this will adversely affect the heat pumps operation.
3.4 Heat Pump Sizing Ensure that the correct size heat pump has been selected in accordance with the latest version of MIS3005 (for UK installation) and with the Dimplex Heat Pump Planning Manual.
3.6 Plumbing – Preparation When selecting piping to install with the heat pump please ensure that: The pipe sizes are adequate to allow the correct nominal water flow rate through the heat pump. The safety group and expansion vessel (space heating side) are accurately sized by the installer based on the system volume (these are not supplied by Dimplex).
Isolation valves (non-return valve and ball valve with strainer), supplied in the Dimplex heat pump hydraulics pack, allow the strainer to be removed and cleaned without having to drain the system. Installation of these valves is discussed in more detail in section 4.2.
4 Installation 4.1 Plumbing The system must be filled and flushed with clean fresh water to ensure the removal of all the air from the installation. Air bleed points must be installed at every high point in the system; in particular, the installer must remember to install an air bleed on the heat pump pipe if it is a local high point since there is no air bleed point on the condenser. Dimplex recommend the use of a power flush and purge cart to facilitate this process.
MODBUS Cable User Interface DI01 DI02 DI03 DI04 DI05 NT C—D HW NTC-Zone 1 NTC-Zone 2 NTC-Zone 3 NTC-Zone 4 LIVE EARTH NEUTRAL RELAY RELAY RELAY RELAY RELAY 1 2 3 4 5 RELAY 6 RELAY 7 RELAY 8 Figure 8 (a): Wiring configuration of space heating and hot water Dimplex A-Class cylinder 7
Dimplex Standard heat pump cylinder User Interface MODBUS Cable DI01 LIVE EARTH NEUTRAL DI02 DI03 DI04 DI05 NTC—DHW NTC-Zone NTC-Zone 1 RELAY RELAY RELAY RELAY RELAY 1 2 3 4 5 2 NTC-Zone 3 NTC-Zone 4 RELAY 6 RELAY 7 RELAY 8 Figure 8 (b): Wiring configuration of space heating and hot water – Dimplex standard heat pump cylinder 8
MODBUS Cable User Interface DI01 LIVE EARTH NEUTRAL DI02 DI03 DI04 DI05 RELAY RELAY RELAY RELAY RELAY NTC—DHW NTC-Zone NTC-Zone 1 1 2 3 4 5 2 NTC-Zone 3 NTC-Zone 4 RELAY 6 RELAY 7 RELAY 8 Figure 8 (c): Wiring configuration of space heating only 9
Figure 9: Opening the casing to fit electrical connections NOTE: Please ensure that opening for cable access is not left open Figure 10: Heat pump electrical connections 10
4.3.1 Heat pump electrical connection The wiring centre or DHW cylinder is connected to the mains power supply. The Modbus network is complete and the UI and the heat pump are connected to the wiring centre or DHW cylinder. To make electrical connections to the heat pump: Feed power cable and controller cable through gland at the back of the base panel.
Start End Heat Pump Wiring Centre User Interface (Jumper ON) (Jumper OFF) (Jumper ON) MODBUS cable Figure 11: Recommended MODBUS cable configuration Start End Heat Pump User Interface Wiring Centre (Jumper ON) (Jumper OFF) (Jumper ON) MODBUS cable Figure 12: If not using the recommended MODBUS cable configuration, the jumper should be located at the beginning and end of the network Jumper Jumper Figure 14: Jumper in the OFF position on water module Figure 15: Jumper in the ON position on
6 Getting Started pressing in the dial to select as before. You will then need to input 55 (commissioning menu code) to bring up the installer menu. When switching on the heat pump for the first time, and after the start up sequence, you will be greeted by the home screen, shown in figure 17. When you enter the installer menu, you will see the option for ‘Language Selection’, as shown in figure 19 (a). As you progress through the set up process, other options will become available on this menu.
7 Commissioning 7.2 Waterside check Select ‘Commissioning’ to begin and follow the instructions on the system controller. The commissioning routine will take you through a number of checks and tests to complete the installation. When you finish using each submenu in the commissioning process, selecting ‘Next’ will take you back to the main Commissioning menu, where a new submenu will be available (figure 19(c)).
7.3 Electrical connections (SH) When checks are completed and ‘Next’ is selected, the type of temperature measurement devices to be used in each heating zone must also be selected: This menu provides a list of electrical connections that should be made prior to commissioning for space heating. The list is based on the schematic zone diagram selected and also the type of temperature devices that will be used in each zone.
7.5 DHW setup If there is no flow at all, a high pressure fault will appear on the UI screen and the commissioning will be aborted. Once the test is completed, you will see one of three messages: 1. 2. 3. Before commissioning the DHW, a number of checks must be carried out, as shown in figure 29. When you have ticked each box to confirm each DHW check, ‘Next’ will bring you back to the installer menu, where you can now select ‘Electrical Connections (DHW)’.
7.5.2 DHW Test Before you run the DHW test, you will be asked to check that the valve (figure 31) is in the DHW position, as shown on the screen in figure 32. Check that the red actuator marker changes to the correct position. When you have completed the valve check and select ‘Next’, you will see the DHW test screen, which informs that the test can take up to 90 minutes. Selecting ‘Run test’ begins the DHW test and shows you the time remaining.
7.7 Heating curves The red line indicates the temperature that the water will be heated to, based on the outdoor temperatures. The ‘Default’ option will reset the pre-defined values. Set will save entered values. When selecting heating curves, you will do so zone by zone. Selecting the zone and pressing ‘Next’ will allow you to select the kind of heat emitters that are in place in the selected zone.
8 Additional Installer Menu Options The relays which control the immersion and backup heater/buffer use an electric interlocking system, and therefore R7 and R8 must be used together in order for the backup heater to function. Testing these relays individually will not reflect this. Once the commissioning process has been completed, if you return to the installer menu there will be various other options now available, as outlined in this section. 8.3 Defrost 8.
10 System health check/maintenance Heat pump: Is the fan clear from debris? Is the tray clear from debris? Is the condensate drain clear from debris? Is the evaporator coil clean? Are all of the outer panels secure? Electrical: Is the power cable firmly fixed? Is the earth wire connection secure? Is the supply voltage correct? Hydraulics: Is the system sufficiently pressurized? Are there any leaks in the system? Is the filter clear of debris? NOTE: It is recommended that the strai
11 Technical Specifications – A Class Air-to-Water Heat Pump 1 2 2.1 2.2 3 3.1 3.
Appendices A Refrigerant cycle 22
B Schematic zone diagrams – Legend No. on UI Code Heating type No.
C - Schematics 1, 2, 3 & 4: Space Heating Only 24
D – Schematics 5, 6, 7 & 8: Zone Space Heating & DHW 25
E - Schematics 9, 10, 11 & 12: Bivalent Space Heating 26
F - Schematics 13, 14, 15 & 16: Bivalent Zone Space Heating & DHW 27
G - Wiring centre electrical connections – with A Class cylinder 28
H - Wiring centre electrical connections – with non A Class cylinder / no cylinder 29
I - Controller cable connections 30
J - Installer Menu Flow Chart Language Selection Commissioning General/Schematic Waterside Checks Message List History Electrical Connections (Space Heating Only) Operating Data Waterflow Checks DHW Setup Electrical Connections (DHW) DHW Test Disinfection Heating Curves Zone Selection Heating Circuit Type Setup Complete ON/Automatic 31 Input/Output Tests
Installer Hand-Over Form Installer Name & address: Installer Contact Phone Number: Installer Contact Email Address: MCS Installer number Date of installation / commissioning HP Serial Number (from nameplate): Heat Pump Model: Cylinder Model/Serial Number: Accessories installed: Schematic number used for commissioning: Details of zone control and heat emitters installed Any other relevant info Note: this installation manual needs to be left with the end user.
EC Declaration of Conformity GDC Group Limited, Millbrook House, Grange Drive, Hedge End, Southampton, Hants, SO302DF, United Kingdom Glen Dimplex Ltd Greenbank Industrial Estate, Rampart Road, Newry, Co. Down, BT34 2QU Manufacturer: Hereby certified that the following device(s) complies/comply with the applicable EU directives. This certification loses its validity if the device(s) is/are modified.
