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Summary of Contents for Dimplex ASCARI MA12
- Page 1 NSTALLATION GUIDE Ref. : 1871184 - 0107103 ASCARI MA12 ELECTRIC HEATING BOILER Ascari MA12 -p. 1 -...
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Page 2: Table Of Contents
2.22.4 - Programming the maximum output setting of the boiler ..........p. 34 2.22.5 - Temperatures display ....................p. 34 2.23 - Counters ..........................p. 35 2.24 - Failures display ........................p. 35 2.25 - Maintenance ..........................p. 36 2.26 - Troubleshooting ........................p. 36 Ascari MA12 -p. 2 -... -
Page 3: Quick Reference Guide
( this prevents the elements turning on) and the boiler pressure gauge used to set the cold system pressure. Once set to 1-1.5bar, the boiler should be switched off and the yellow bridge returned to its position between terminals 10 & 11. Ascari MA12 -p. 3 -... -
Page 4: Installation Ans Configuration
OPERATING WITH HOT WATER CYLINDER Dimplex recommend to use a direct electric unvented cylinder for the production and storage of the hot water as this is cheaper than an indirect cylinder, requires less plumbing (piping and valves) and is more thermally efficient. -
Page 5: Boiler (Serial Numbers Of 0500151 And Over)
• The cylinder thermostat normally open contact (240V) should be connected to terminal 25, wich is located beside the relay located in top right of the boiler. • In the set-up menu, set option 12 to 01 set option 13 to 00 Ascari MA12 -p. 5 -... -
Page 6: Menu Options
+ button a second time and if auto-adaptability has been selected the temperature correction applied will be displayed (Option 06 Auto-adaptability adjusts the temperature of the heating circuit for the most efficient and temperature stable operation. ) Ascari MA12 -p. 6 -... -
Page 7: Summer / Winter Mode
• Where underfloor and hot water cylinder are used in the same heating circuit it is necessary to use the C Temperature cut-out in the boiler and include a separate 60 C thermal cut-out for the underfloor heating circuit. Ascari MA12 -p. 7 -... - Page 8 Ascari MA12 -p. 8 -...
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Page 9: Installation And Devicing Instructions
2.1 - Introduction The Dimplex Ascari boiler is an all electric domestic central heating boiler suitable for use on a 230V 52A 50Hz supply. The unit is easy to install and requires no flue, making it ideal for apartments or properties in conservation areas. -
Page 10: Important Information
Should any water or steam be seen to be exiting from this outlet the boiler electricity supply should be switched off and the Dimplex customer service centre contacted. Ascari MA12 -p. 10 -... -
Page 11: Technical Specification
3 x 16² (Phase + Neutral + Earth) PERFORMANCE Water Pressure Minimum 0.5Bar (0.05MPa) Maximum 2.5 Bar (0.25MPa) Nominal 2 Bar (0.2MPa) Water Temperature Minimum Maximum Water Flow Rate Minimum 350litres/hour Nominal 700litres/hour Maximum 1400litres/hour Thermal Limit Radiators Underfloor Ascari MA12 -p. 11 -... -
Page 12: Preparation
The boiler may be opened by unscrewing the bottom two bolts a couple of turns (they do not need to be removed completely). The front cover may then be pulled out from the bottom and lifted off the two top pins. Switch off the electricity supply to the boiler before opening the internal cover. Ascari MA12 -p. 12 -... -
Page 13: Electrical Compartment
(100deg C for radiators, 60deg C for underfloor) Where both underfloor and hot water cylinder are used, it is necessary to use the 100°C temperature cut-out in the boiler and include a separate 60°C thermal cut-out for the underfloor heating circuit. Ascari MA12 -p. 13 -... -
Page 14: Installation Requirements
Tighten the screws to secure the boiler to the wall. • Once fixed to the wall the boiler may be plumbed into the central heating system. Ø8 screw plug Ascari MA12 -p. 14 -... -
Page 15: Plumbing
100 C device– see section 4.3. • A drain cock is required to be fitted in the lowest part of the heating system to allow the system fluid to be drained fully. Ascari MA12 -p. 15 -... -
Page 16: Filling Loop
Mains Double Heating Pressure Pump & Heating water check System reducing valve System supply valve Return (if required) Return assembly Recommended and approved method for filling closed circuits in a house (R24-2a Water Regulations Guide) Ascari MA12 -p. 16 -... -
Page 17: Electrical
There must be at least one radiator installed with lock shield valves that should not be closed and will allow 350litre/hr circulation. Further guidance can be obtained from the Domestic Heating and Hot Water Guide to the building regulations. Ascari MA12 -p. 17 -... -
Page 18: Power Selection
The heating system should be filled using the approved installed filling loop. Ensure all radiator valves are open. The initial system pressure when cold should be between 1.0 (0.lMPa) and 1.5bar (0.15MPa). • Once filled check the system for leaks. • Open the drain cock and drain the system fully. Ascari MA12 -p. 18 -... -
Page 19: Boiler Configuration
Select 0 for central heating or floor heating only. (default is 0) Select 1 if boiler connected to indirect hot water cylinder. This setting should always be set to 0. Press + & - together for 3 seconds to exit the set-up menu. Ascari MA12 -p. 19 -... -
Page 20: Automatic/ Manual Operation
Once the fault has been cleared the boiler will turn on again if the system is filled and pressurised to over 0.5 bar. 2.12 - Servicing It is recommended that the Boiler be installed and serviced regularly by a Dimplex service agent to ensure continual trouble-free operation. For details of service agents in your area please contact: Glen Dimplex UK Limited... -
Page 21: Dimensions - Hydraulic Connections
Drain tap Front view Side view 87,5 Power wire entry Accessories connection entries Safety relief drain Ø15 Top view D = Heating outflow 1" female nut (26/34) R = Heating backflow 1" female nut (26/34) Ascari MA12 -p. 21 -... -
Page 22: Power Terminal
1 : Introduce the blade of the driver into the opening located just above or bellow the mark with a slight pivoting move to center. 2 : Introduce the connector's terminal inside the cage. 3 : Remove the screwdriver Ascari MA12 -p. 22 -... -
Page 23: Connection To The Electricity
Ground 16² Neutral 16² : 63A fused supply on the consumer unit via a double pole limited switch with minimum contact gap of 3mm. Phase 16² : Stripped length of wires between 16 and 17mm Ascari MA12 -p. 23 -... -
Page 24: Regulation Circuit Drawing
: Electronic card with display Total cut-out (remove the bridge) : 3 speed pump DP1 & DP2 : Partial cut-out (remove the : Boiler's sensor bridge) AQS1 : 60°C safety limitator with manual reset External command relay Ascari MA12 -p. 24 -... -
Page 25: Direct Room Thermostat Connections And Direct Cylinder Thermostat
: 60°C safety limitator with volt normally open contacts manual reset Cylinder thermostat : External command from AQS2 : 100°C safety limitator with direct cylinder thermostat manual reset (normally open contact K1 to K4 : 20A power breakers 240V) Ascari MA12 -p. 25 -... -
Page 26: Control Accessories Wiring
• Connectors will be of electrolitic quality brass (no corrosion of stripped ends at connection). • Never use telephone wire (cross-section of sub-connectors too thin and easy breakable at connections points). • Cross-section of connectors must be between 0,5 and 1mm². Ascari MA12 -p. 26 -... -
Page 27: Direct Room Thermostat Connections And Direct Cylinder Thermostat
• Connectors will be of electrolitic quality brass (no corrosion of stripped ends at connection). • Never use telephone wire (cross-section of sub-connectors too thin and easy breakable at connections points). • Cross-section of connectors must be between 0,5 and 1mm². Ascari MA12 -p. 27 -... -
Page 28: Wiring Diagrams
60°C 100°C blue In optionnal blue Légende : PH : Phase 3-speed pump Neutral DHW sensor Domestic Hot Water Safety limitor 4A fuse size 5 x 20 Boiler's sensor C1 : Electronic card with display Ascari MA12 -p. 28 -... - Page 29 Légende : AQS1 60°C Safety limitor with manual reset K1 to K4 : 20A power breakers AQS2 100°C safety limitor with manual reset T1 & T2 : 6kW heating elements Ascari MA12 -p. 29 -...
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Page 30: Speed Water Pump
The boiler is factory set at pump speed 3, for lower pump speeds the selector in the centre of the pump may be turned to 1 or 2 using a large flat bladed screwdriver. Electric datas Nominal Nominal Speed output (W) intensity (A) 0,40 0,30 0,20 Ascari MA12 -p. 30 -... -
Page 31: Control Pannel Description
Used to choice manual or Boiler stops automatically below 0,3 bar automatic operating (see with automatic reset over 0,5 bar. §2.9.1) (0,2 blinking displays a pressure loss - other value flashing displays a pressure sensor failure) Ascari MA12 -p. 31 -... -
Page 32: Regulation Settings
"bar". • Press (instant touch) to change setting. • Press (instant touch) to confirm setting and return to setting menu. • Press (3 sec) any time to exit the setting menu. Ascari MA12 -p. 32 -... - Page 33 Depending on water flow rate and volume inside the heating circuit, the boiler might start at very short intervals with wear and tear resulting. To reduce the number of cycles, increase postponement. : To reset autoadaptability, zero parameter # , then set value to 1. Ascari MA12 -p. 33 -...
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Page 34: Operating
(Available in manual mode only (see § 2.22.1 above) Press during 3 sec to start the summertime mode and lit Summertime LED; Press during 3 sec to start the wintertime mode and lit the Wintertime LED. Ascari MA12 -p. 34 -... -
Page 35: Programming The Maximum Output Setting Of The Boiler
«°C» (see § 2.21 to zero this correction). Temperature correction can be read on bottom display i.e. with a glittering LED down right the display if a negative value (-5°C in this example). Ascari MA12 -p. 35 -... -
Page 36: Counters
2 FLASHING SEGMENTS in front of bar -indicate the system pressure has fallen below the minimum operating pressure. • Check if water has discharged from the pressure relief valve. If so call a Dimplex service agent. • Check for leakage in the system. -
Page 37: Maintenance
(seer § 1.2 to access heating elements). Front view (electric box removed) View from below (Access trap-door to elements removed) Heating elements Drain tap with hose O-ring Element Heating Cap with fastener elements drain tap Ascari MA12 -p. 37 -... -
Page 38: Spare Parts List
Outside sensor (option) B1243586 B1243558 6kW heating element B1657044 Heating element gasket 20A tetrapole switch B1243561 Fuse holder B1243146 B1243147 4A fuse size 5 x 20 B1943599 Display C1 electronic card B1943600 Temperature display B1243534 Ascari MA12 -p. 38 -... - Page 39 NOTE Ascari MA12 -p. 39 -...
- Page 40 Ascari MA12 -p. 40 -...
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