Related Manuals for EHC Comet
Summary of Contents for EHC Comet
- Page 1 Comet Combination Unit INSTALLATION & TECHNICAL MANUAL Unit 40 block 5 Third Road Blantyre Glasgow G72 0UP Tel: 01698 820533 Fax: 01698 825697 email: info@electric-heatingcompany.co.uk...
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Page 3: Table Of Contents
Contents Page Introduction Contents Safety Installation: Dimensions Installation: General Hydraulic schematic Installation: Plumbing Installation: discharge arrangement Electrical Connection 10. Connection of external appliances & Controls 11. Electrical Schematic 12. Commissioning 13. Control panel - default settings 13. Control panel- optional settings with OS 14. -
Page 4: Introduction
The Comet Combi is an electrically heated direct acting self modulating boiler that is designed for domestic heating purposes, The Comet Combi consists of an electric heating boiler and an indirect unvented hot water cylinder with the necessary safety devices. The Comet Combi Boiler also has an inbuilt programmer that allows you to set your heating and hot water times to suit your life style. -
Page 5: Safety
• The Comet Combi’s Domestic Hot Water Cylinder is of the UNVENTED type. Its installation is subject to Building Regulation G3 (England and Wales), Technical Standards for (Scotland) or Building Regulation (Northern Ireland). The Installation must be carried out by a competent person qualified to do so. -
Page 6: Installation: Dimensions
Installation: Dimensions Note: Please take care to leave enough space at the front of the boiler for routine maintenance! 250mm Min 400mm Min 25mm Front Rear 150mm 25mm Side Side • Remove the boiler packaging checking the contents are correct. •... -
Page 7: Installation: General
12. System types in the flow and return pipework will reduce the recommended The Comet Combi range of boilers can be used in various system flow rate through the boiler. designs. Please refer to The Electric Heating Company for more 5. - Page 8 Installation; General The following steps will assist in removing the casing for installation & maintenance purposes. Loosen Bottom Screw. Lift & Pull Cover Out At The Bottom To Remove. Remove Left Screw. Remove Right Screw. Carefully Lift & Remove Top Section.
- Page 9 Installation; General 1 - Expansion vessel 2 - Tundish 3 - Magnetic Filter 4 - Pressure Sensor 5 - Power Board 6 - Pump 7 - Heat Exchanger including AAV 8 - Zone valves 9 - Drain valve...
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Page 10: Hydraulic Schematic
Hydraulic schematic Primary return Primary flow Valve Not Included Valve Not Included 1 - Combination Valve with PRV 2 - Expansion vessel 3 - T&P Relief valve 4 - Tundish 5 - Magnetic Filter 6 - Pump 7 - Heat Exchanger including AAV 8 - Zone valves 9 - Isolating valves (Not included) 10 - Drain Valve... -
Page 11: Installation: Plumbing
/ flowrate is not being achieved. Cold mains pipework 1. Run the cold water mains pipework to the location of the Comet Combi. Take care not to run cold pipes close to hot pipework as this will cause thermal transfer. - Page 12 Installation: Plumbing Balanced cold connection Do not use monobloc mixer taps or showers if the balanced cold connection is not used. Outlets of this type can back-pressurise the unit and result in discharge. A 22mm balanced cold mains outlet can be found on the control set supplied, (see diagram below) Use the balanced cold mains outlet from the inlet control set (as shown in the illustration) to feed all mixer taps / showers, instead of connecting them direct to the cold main supply.
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Page 13: Installation: Discharge Arrangement
Installation: discharge arrangement metal discharge pipe (D1) from temperature relief valve to tundish safety device temperature relief valve tundish 600mm maximum 300mm minimum Discharge below xed grating metal discharge pipe (D2) from tundish, with continuous fall. grating trapped gulley The above diagram is of a typical discharge pipe arrangement. (extract from Building Regulation G3) Note: The discharge will consist of scalding water and steam. - Page 14 Installation: discharge arrangement 1. Ideally below the fixed grating and above the water seal in a trapped gulley. 2. Downward discharges at a low level; i.e. up to 100mm above external surfaces such as car parks, hard standings, grassed areas etc.
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Page 15: Electrical Connection
The supply is a permanent Feed connection to the boiler from BACK UP IMMERSION HEATER the mains supply and should never be isolated unless for The Comet Combi has a connection that allows you to install a maintenance purposes. back up immersion heater if required. It is recommended that... -
Page 16: Connection Of External Appliances & Controls
10. Connection of external appliances & Controls FACTORY CONNECTIONS Install the outside temperature sensor (O/S) in the shade, on the north or northwestern facade of the building, away from windows ZoneValve (SHW & SCH Volt Free Inputs) and ventilators. When the Volt Free contacts are open circuit the boiler will WEATHER COMP –... -
Page 17: Electrical Schematic
11. Electrical Schematic fi Wireless Receiver Supply... -
Page 18: Commissioning
12. Commissioning IMPORTANT: 3. Re-fill the system and circulate the F3 cleaner prior to the boiler being fired up. Commission the system in the normal way. TURN ON THE ELECTRICAL POWER SUPPLY TO THE The cleansing agent must be in the system for a minimum 1 BOILER. -
Page 19: Control Panel - Default Settings
13. Control panel - default settings Dial 3 changes the mode: winter : CH + DHW summer ( ): DHW Dial 2 changes function screens (by turning left or right) to: main function screen: informs about the basic parameters of 9:37 TUE 22,08,2017 the boiler (details in the table- p. - Page 20 MAIN SCREEN - default settings [1] - heat reception HW [2] - heat reception CH 9:37 TUE 22,08,2017 [3] - executing of a heating program [4] - room thermostat 5,1° [5] - storage temperature 60° 24.2 ° Call For Heat Domestic Hot Water Central Heating System Icons According to a set daily / weekly schedule Tank cleansing Circulation pump venting Temperature icon ROOM THERMOSTAT Default Call for Heat Icon...
- Page 21 SETTINGS - default settings ● HW PROGRAM - working program of DHW WEEKLY selection of the daily programs for each day of the 8:38 THU 24,08,2017 week. Default settings of the boiler: program NO 1 for all week days (editable). NOTE: in order to achieve energy efficiency class C (in accordance with ErP directive) program 8 must be set No 8 ECO Program Schedule...
- Page 22 ● TANK CLEANSING: Temperature: temperature of the storage tank during BOOST cleansing, Week day: day of the week of automatic cleansing, boost central heating Time: time of automatic cleansing, Working time: cleansing duration, boost hot water Automatic mode: start cleansing automatically at a given time (hour, week day): ON/OFF, Activate now: TURN ON/CANCEL.
- Page 23 SERVICE / CONFIGURATION - default settings ● PUMP: PUMPS OVER RUN: time to turn the pump on for a short time at a longer standstill (protection against blocking). AUTOMATIC MODE: yes > works according to user’s needs 8:38 THU 24,08,2017 / no >...
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Page 24: Control Panel- Optional Settings With Os
13. Control panel- optional settings with OS (outside sensor) and IS (NTC sensor activated) Dial 3 changes the mode: winter : CH + DHW summer ( ): DHW Dial 2 changes function screens (by turning left or right) to: main function screen: informs about the basic parameters of 9:37 TUE 22,08,2017 the boiler (details in the table- p. - Page 25 MAIN SCREEN optional settings with O/S (outside sensor) and I/S (NTC sensor activated) [1] - heat reception HW [2] - heat reception CH 9:37 TUE 22,08,2017 [3] - executing of a heating program [4] - temperature settings for the room 5,1° [5] - room temperature [6] - outside temperature [7] - storage temperature 60° 24.2 ° Call for Heat Hot water heating/ storage heating Central installation heating System icons According to a set daily / weekly schedule BOOST - keeping the room and storage temperature comfortable HOLIDAY - keeping the room and storage temperature economical or frost-proof...
- Page 26 SETTINGS optional settings with O/S (outside If there are no defined time frames, then after selecting ‘new’ the time frame 00:00am to 23:59pm will be set , which should be sensor) and I/S (NTC sensor activated) edited in accordance with user’s needs. The daily program will be saved to the boiler’s settings by pressing the command ‘END’ 8:38 THU 24,08,2017 • HW PROGRAM - working program of DHW WEEKLY selection of the daily programs for each day of the week. Default settings of the boiler: program NO 1 for all week days (editable) NOTE: in order to achieve energy efficiency class C...
- Page 27 BOOST / HOLIDAYS / MANUAL ● ROOM TEMP (not available when cooperating with external room thermostat (RT): Below modes are available only when NTC sensor (I/S) is Economy, Comfort -, Comfort, Comfort+: setting room activated. temperature values in available schedules ( Boost, Holidays: choose what temperatures are to be set in the programs BOOST and HOLIDAYS...
- Page 28 SERVICE / CONFIGURATION optional settings ● PUMP: PUMPS OVER RUN: time to turn the pump on for a short with O/S (outside sensor) and I/S (NTC sensor time at a longer standstill (protection against blocking). activated) AUTOMATIC MODE: yes > works according to user’s needs / no >...
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Page 29: Annual Servicing
SERVICING MUST BE CARRIED OUT ANNUALLY & SHOULD ONLY BE CARRIED OUT BY COMPETENT INSTALLERS AND ANY SPARE PARTS USED MUST BE PURCHASED FROM EHC. NEVER BYPASS ANY SAFETY DEVICES OR OPERATE THE UNIT WITHOUT THEM FULLY OPERATIONAL. YOUR GUARANTEE MAY BE VOID WITHOUT PROOF OF ANNUAL SERVICING. -
Page 30: Guarantee
15. Guarantee The Comet Combi boiler comes with a 2 year parts & labour warranty and the stainless steel vessel carries a 10 year guarantee against faulty materials or manufacture provided that: • It has been correctly installed as per this document and all the relevant standards, regulations and codes of practice in force at the time. -
Page 31: Technical Data
17. Technical data The Electric Heating Company Comet Combination Unit Electrical Supply 240V~ 50Hz Rated power 14,4 Rated current Minimum Permitted Cable Diameter 10mm 16mm Primary system pressure relief valve setting Primary system operating pressure (min) Thermal cut-out ºC t.cut-out 90-99... -
Page 32: Benchmark Service Record
18. Benchmark Service Record MAINS PRESSURE HOT WATER STORAGE SYSTEM COMMISSIONING CHECKLIST This Commissioning Checklist is to be completed in full by the competent person who commissioned the storage system as a means of compliance with the appropriate Building Regulations and then handed to the customer to keep for future reference. Failure to install and commission this equipment to the manufacturer's instructions may invalidate the warranty but does not affect statutory rights. - Page 36 If you require any further assistance: Telephone: 01698 820533 Fax: 01698 825697 E-mail: info@electric-heatingcompany.co.uk or visit our website www.electric-heatingcompany.co.uk...
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