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Related Manuals for andrews ECOflo EC96/380
Summary of Contents for andrews ECOflo EC96/380
- Page 1 INSTALLATION AND SERVICE MANUAL ECOflo range High efficiency condensing storage water heaters for natural gas EC96/380 Please read and understand these instructions before commencing installation and leave this manual with the customer for future reference. 238-53887-00A REV 9/20...
- Page 2 UK users is drawn to their responsibilities under the Health and Safety Regulations 1993. All installation and service on Andrews Water Heaters must be carried out by properly qualified personnel and, therefore, no liability can be accepted for any damage or malfunction caused as a result of intervention by unauthorised personnel.
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Page 3: Table Of Contents
Contents Contents General and safety information General information British standards and codes of practice Health and safety regulations 1993 Effectiveness in combating legionella Technical data Data table Dimensions and clearances ErP data Installation Introduction Location Features 3.3.1 Main power ON/OFF switch 3.3.2 Combustion system 3.3.3... - Page 4 Contents 3.28 Flue systems 3.28.1 Optional components for 100/150mm dia (concentric) flue 3.28.2 ECOflo 380 horizontal flue kit - part no: B343 3.28.3 ECOflo 380 vertical flue kit - part no: B345 3.28.4 General 3.28.5 EC 380 litre flue system 3.28.6 EC 380 vertical/horizontal flue system 3.28.7...
- Page 5 Contents Correx powered anodes Flushing water heater Draining water heater Filling water heater 6.10 Sediment and limescale 6.10.1 To remove sediment and limescale To replace a correx anode 6.11 6.12 Drain valve and tank access panel 6.13 Cleaning the storage vessel 6.14 Descaling Restart...
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Page 6: General And Safety Information
General and Safety Information General and Safety Information General Description This Andrews Water Heater has been designed for use with NATURAL GAS and is manufactured to give an efficient, reliable and long service life. To ensure the continued, trouble-free operation of your heater at... -
Page 7: Health And Safety Regulations 1993
Andrews Water Heaters should only be used in the manner and purpose for which they are intended and in accordance with the instructions in this manual. Although the heaters have been... -
Page 8: Technical Data
Technical Data Technical data Data Table EC96/380 Natural gas, category 1 9.91 m³/h Gas consumption G20 Heat input gross 102.6 kW Heat output 96.4 kW Supply pressure 20 mbar Gross thermal efficiency (NG) NOx level, 0% O2 (NG) 40mg/kWh Noise level (a) 51dBA Recovery rate thru’... -
Page 9: Dimensions And Clearances
Water heating energy efficiency Annual energy consumption 80.6 (AEC) Annual fuel consumption (AFC) 20.8 Thermostat temperature setting °C Sound power level L indoors ECOflo EC96/380 Daily electricity consumption 0.55 elec Daily fuel consumption 26.3 fuel Emissions of nitrogen oxides mg/kWh (0%O Storage volume ∞... -
Page 10: Installation
Installation Installation Introduction THE LAW REQUIRES THAT INSTALLATION IS CARRIED OUT BY A PROPERLY QUALIFIED PERSON Installations must be carried out in accordance with Gas Safety (Installation and Use) Regulations 1998, Building Regulations, The Water Supply (Water Fittings) Regulations 1999 and any requirements of the local Gas Supplier, Local Authority, Water and Fire Authorities and the current British Standards and Codes of Practice listed in Section 1. -
Page 11: Features
Installation Features This is the latest addition to the Andrews Water Heaters ECOflo range of condensing storage water heaters and is designed for commercial and industrial applications. The high efficiency units incorporate Vitraglas® silica glass lined tanks to provide protection against the corrosive effect of hot water and therefore a longer working life. -
Page 12: Ignition Module
This can be accomplished by depressing the red button on the high limit switch once the water temperature of the tank has dropped below 71°C. Please contract Andrews Water Heaters (details listed on the Data Plate) if continued high limit switch operations occur. 3.3.5... -
Page 13: Cleanout
3.3.7 Electrically Powered Anodes All models are supplied complete with Andrews’ Correx Powered Anode system. The anodes are non-sacrificial and therefore do not require any maintenance or replacement. For this reason, the service clearance required above the water heater can be reduced quite significantly. -
Page 14: Technical Detail
Vitraglas® lined tank – Andrews Water Heater tanks are protected from the corrosive effects of hot water by an exclusive ceramic porcelain-like coating. Our high silica Vitraglas® lining provides a tough interior surface. -
Page 15: Determining Required Flue Length
Installation 3.4.1 Determining required flue length 1. Determine the total length of straight concentric flue pipe (in metres) required for the installation. 2. Add 1.2 metres of flue for every 90° elbow. 3. Add 0.7 metres of flue for every 45° elbow. 4. -
Page 16: Heat Exchanger
Installation Heat Exchanger Burner fires down into 8” diameter flue tube transferring the radiant heat from the burner flame into the tank water. 1st Pass Flue Collector: At the bottom of the tank, a refractory lined heavy gauge flue collector re-directs the flue gases from the 8”... -
Page 17: Gas Connections
1. All equipment is carefully manufactured, inspected and packed. 2. Any claims for damage or shortage in shipment must be filed immediately with Andrews Water Heaters as detailed on the warranty card 3.12 Location Locate water heater in front of final position before removing crate. -
Page 18: Location
Installation 3.14 Location KEEP APPLIANCE AREA CLEAR AND FREE OF COMBUSTIBLE MATERIALS, PETROL, AND OTHER FLAMMABLE VAPOURS AND LIQUIDS. This water heater MUST be installed indoors. This water heater MUST be located in an area where the general public does not have access. 3.15 Chemical Vapour Corrosion Corrosion of the internal flue ways and concentric flue system will occur if air for combustion contains certain chemical... -
Page 19: Typical Propane Bulk Storage Tank Installation
Installation 3.17 Typical Propane Bulk Storage Tank Installation Gas cock BULK SUPPLY TANK Regulator set to give 37 mbar (14.86" wg) Gas emergencey propane control at entry Regulator normally fitted at 1" Heavy steel tank sleeved pipe through wall Steel liner sealed to pipe at inside end Fig. -
Page 20: Approximate Time/Temperature Scald Chart
Installation 3.19 Approximate Time/Temperature Scald Chart The following chart details the relationship of water temperature and time with regard to scald injury. This may be used as a guide in determining the safest water temperature for the installation. APPROXIMATE TIME/TEMPERATURE RELATIONSHIPS IN SCALDS 48.8°C More than 5 minutes 51.6°C 1½... -
Page 21: Gas Supply - Natural Gas
British Standards and Codes of Practice listed in Section 1 of this manual. Andrews Water Heaters are unregulated, and a second stage regulator must be installed to give an inlet pressure to the appliance as follows (next page). -
Page 22: Electrical Supply
Installation PROPANE: 37mbar When using propane cylinders, connect a minimum number of 47kg cylinders, as listed below, together with a manifold before connecting to the union. Use a minimum pipe size of ¾in bore. Four 47kg Cylinders WARNING PROPANE CYLINDERS MUST BE USED AND STORED IN ACCORDANCE WITH ‘THE HIGHLY FLAMMABLE LIQUIDS AND LIQUIFIED PETROLEUM GASES REGULATIONS 1972’, AND SHOULD... -
Page 23: Wiring Diagram - Model
Installation 3.24.1 Wiring Diagram - Model EC 96/380 Fig. 4... -
Page 24: Flue Systems
Installation 3.25 Flue Systems Andrews Water Heaters’ ECOflo is a Balanced Flue, Gas Water Heater where all air for combustion is obtained from the outside atmosphere and all flue gases are discharged to the outside atmosphere. The flue system is a single concentric (pipe within... -
Page 25: Maximum Flue Distances (Horizontal Or Vertical)
3.27 Horizontal and Vertical Flue Kits 3.27.1 Installation procedure 1. The horizontal and vertical flue kits available from Andrews Water Heaters includes the components as listed within this document. The concentric flue pipe system includes both the flue exhaust (inside pipe) and combustion air (outside pipe). -
Page 26: Flue Systems
Installation 3.28 Flue Systems 3.28.1 Optional Components for 100/150mm dia (concentric) Flue Part Description Part Number 1m Cuttable flue pipe with clamp 5136159 0.5m Flue pipe with clamp 5136160 90° Elbow 5136162 45° Elbow 5136161 Flat roof flashing for vertical flue terminal with adjustable cap E207 Roof flashing for pitched roof to suit 150mm dia. -
Page 27: Ecoflo 380 Horizontal Flue Kit - Part No: B343
Please contact Andrews Technical Support Department if advice is needed for a particular installation. If installed on a roof valley, the terminal should be at least 1m above the highest part of the roof structure and 2.5m from any... -
Page 28: Ec 380 Litre Flue System
Installation WARNING The flue system must be properly installed. Ensure the inner flue is securely sealed at all the joints otherwise incomplete combustion may result. Do not exceed maximum flue lengths including elbows. 3.28.5 ECOflo 380 litre models Flue Systems The ECOflo uses a concentric flue system, 150mm outside diameter with an inner flue of 100mm diameter. -
Page 29: Ec 380 Vertical/Horizontal Flue System
Installation 3.28.6 ECOflo 380 litre models Vertical/Horizontal Flue System Fig. 6 Height of concentric section above heater 205mm Height of concentric sample point 115mm (+/– 5mm) Height of centre line of 90° bend 178mm (+/– 5mm) Total height to centre line of bend 500mm (+/–... -
Page 30: Flue System Typical Installation
Installation 3.28.7 Flue Systems Typical Installation K, N Likely flue positions requiring a flue terminal guard Fig. 7 Terminal Positions with Minimum Distance (mm) EC96/380 Model Directly below an opening, air brick, opening window etc. 2500mm Above an opening, air brick, opening window etc 762mm Horizontal to an opening, air brick, opening window etc. -
Page 31: Installing The Horizontal Flue Terminal
Installation 3.28.8 Installing the Horizontal Flue Terminal Note The horizontal flue terminal supplied may be used through outside walls up to 600mm (24in) thick. 1. Horizontal flue terminal (through the wall) supplied. a) Cut an opening of at least 165mm (6.5in) diameter through to the outside. -
Page 32: Installing The Vertical Flue Terminal
Installation 3.28.9 Installing the Vertical Flue Terminal 2. Vertical Flue Terminal (Through the Roof) a) Determine the exact location where the roof flue terminal will exit the roof, ensuring the flue system clears all obstructions. For pitched roofs, the flue cap must be the distance above the roof line as specified (300mm to base of flue clamp, minimum). - Page 33 Installation f) The last pipe section may be cut to fit the distance required to reach the water heater flue connections. If a flue condensate trap is specified, install the supplied tap with crimped end into the gasketed end of the elbow (horizontal flue installations) and clamp the condensate tee and elbow together (see Fig.
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Page 34: Air Supply And Ventillation
Installation 3.29 Air Supply and Ventilation 3.29.1 Concentric Flue Systems The following notes are intended to give guidance: If the heater is to be installed in a room, NO VENTS ARE REQUIRED. If the heater is to be installed in a COMPARTMENT, permanent air vents are required in the COMPARTMENT at high and low level. -
Page 35: Water Quality And Treatment
This problem can be minimised by reducing the water temperature in the heater and by fitting suitable water pre- treatment equipment. When installing Andrews Water Heaters in hard water areas we would recommend that a water treatment specialist is consulted. -
Page 36: Water Connections
Installation 3.31 Water Connections 3.31.1 Vented Systems The water heater can be fed from a cold water feed cistern or static water tank. An open vent pipe must be installed in-line with the requirements of BS6644 and no means of isolation the open vent pipe from the heater is permitted, A safety valve can be fitted as specified in BS 6644. -
Page 37: Unvented Systems
Cold water inlet FOR SYSTEMS WITH LARGER PIPE VOLUMES OR ADDITIONAL STORAGE, EXPANSION VESSELS WITH MORE C1 Combined pressure CAPACITY ARE AVAILABLE – CONTACT THE ANDREWS reducing valve/strainer SALES OFFICE FOR FURTHER DETAILS. Balanced cold water take-off (if required) The combined temperature and pressure relief valve C5, must be installed into the horizontal 1”... -
Page 38: Commissioning
Installation Typical water service layout for unvented system is shown in Fig 16. Balanced Cold Water Hot Water Service Take Off (Optional) Secondary Return Pipe Cold Water Inlet Valve Check Valve Bronze Pump To Drain Fig. 16 Commissioning CAUTION DO NOT OPERATE THE WATER HEATER UNTIL THE STORAGE VESSEL IS COMPLETELY FILLED WITH WATER, WITH WATER RUNNING FROM ALL HOT TAPS. -
Page 39: User's Safety Guide
Commissioning User’s Safety Guide For your safety, read this section prior to lighting the appliance. WARNING Always follow manufacturer’s instructions when lighting the appliance. Failure to do so may result in damage to property, personal injury or loss of life. Before lighting, check all around the appliance area for gas. -
Page 40: Co 2 Percentage
Operating Instructions CO² Percentage G20 Natural Gas* Input rating Flue Gas Volume Combustion Vent Temp kW/hr C° % (0-8)m Flue Length Cubic metres/hr % (8.1-16)m 102.6 50-60 (9.5 - 9.7) 15 ppm (8.5 - 8.7) *measured at concentric measure point E910 LPG (Propane) Input rating Flue Gas Volume... -
Page 41: General Instructions
Operating Instructions General Instructions 5.1.1 To fill the water heater 1. Close the water heater drain valve by turning the knob or valve stem clockwise. If alternative water connections are provided but not used, make certain they are plugged (i.e. side connections). -
Page 42: Lighting Instructions
To avoid unnecessary inconvenience and expense, make sure the tank is actually leaking before contacting Andrews Water Heaters. Idle Heater and Winterizing If the water heater is to remain idle for 30 days or more, or is... -
Page 43: Eco (Energy Cut-Off)
Operating Instructions ECO (Energy Cut-Off) The heater is equipped with an ECO (Energy Cut-Off) device, fitted to the control thermostat. It is a temperature sensitive switch which opens at high temperature, shutting off gas to the burner in an overheat condition. When the water has cooled sufficiently, the manual reset on the ECO needs to be depressed to allow the heater to be re-lit. -
Page 44: Temperature Selection Procedure (Auto-Ignition)
Operating Instructions Temperature Selection Procedure For energy efficient operation of your water heater, the suggested initial temperature setting is 49°C. Condensation does not mean your tank is leaking. Over 40% of reported tank leaks on installation’s are proven to be condensation. -
Page 45: Burner Flame Check
Operating Instructions Burner Flame Check At the time of installation and at periodic intervals (about every 3 months), a visual check of the pilot and burner flames should be made to determine if they are burning properly. The burner flames should be blue with yellow tips. A blue-orange flame is characteristic of operation on liquefied petroleum (LP) gas. -
Page 46: Servicing
Servicing Servicing The following maintenance should be performed by a qualified service technician at the minimum periodic intervals suggested below. In some installations, the maintenance interval may be more frequent depending on the amount of use and the operating conditions of the water heater. Regular inspection and maintenance of the water heater will help to ensure safe and reliable operation. -
Page 47: Introduction
Servicing 7. Monthly drain off a gallon of water to remove silt and sediment. WARNING! This water may be HOT. 8. All models are equipped with a cleanout opening to aid in removal of hard water deposits from the tank bottom. If this water heater operates under hard water conditions, the following should be performed at least every 3 months: Drain the water heater. -
Page 48: Annually
Servicing Annually Annual checks of the ignition systems, temperature controls and any other controls are necessary to ensure continued safe and efficient operation. The entire combustion system must be sealed for this water heater to function correctly. Replace any damaged parts. Please see pages 60 &... -
Page 49: Draining Water Heater
Servicing Draining Water Heater The water heater must be drained if it is to be shut down and exposed to freezing temperatures. Maintenance and service procedures may also require draining the water heater. 1. Turn off the water heater electrical disconnect switch. 2. -
Page 50: To Replace A Correx Anode
Servicing Note Example: Initial inspection shows ½ inch of scale accumulation. Therefore, the water can be de-scaled once a year. 6.10.1 To remove sediment and limescale 1. Drain the heater. Refer to DRAINING THE WATER instructions in this section. 2. Remove outer cover plate from lower side of water heater jacket. -
Page 51: Cleaning The Storage Vessel
Servicing 6.13 Cleaning the Storage Vessel The storage vessel should be checked and cleaned annually. Scale formation in the base of the vessel may occur, particularly in hard water areas, and is normally associated with high usage and high water temperatures. It is characterised by a rumbling noise when the main burner is lit. -
Page 52: Combined Temperature/Pressure Relief Value
Servicing 6.16 Combined Temperature/Pressure Relief Valve At least twice a year, the temperature and pressure relief valve should be checked to ensure that it is in operating condition. To check the relief valve, lift the lever at the end of the valve several times. -
Page 53: Procedure For Checking Thermostat Sensors
Servicing 6.21 Procedure for Checking Thermostat Sensors Set the thermostat above water temperature (see temperature adjustment section) and observe system through one (1) complete cycle. Make sure system operates as desired. To check the upper sensor or lower sensor assembly, compare the resistance of the sensor terminals (blue leads for upper sensor, yellow and black lead for lower sensor) as measured by an ohmmeter to the water temperature as measured by an... -
Page 54: Fault Finding
Fault Finding Fault Finding Main Power Light is Not On Make sure that the water heater is plugged in. When the switch is on, is there 230V between L1 and N on the terminal block? If not, check for loose wire connections on the Power Switch Wire Harness. -
Page 55: Main Valve Does Not Turn On
Fan Did Not Post Purge Check ‘Pressure Switch’ (exhaust pressure switch) as previously mentioned. Check ‘Collector Limit Switch’ as previously mentioned. If the above switches are functioning, please contact the Technical Support Department at Andrews Water Heaters for further assistance. -
Page 56: Parts List And Illustrations
Parts List and Illustrations General Assembly (EC96/380) Fig. 19... - Page 57 General Assembly Item No Description Part No See Combustion Surround Assy Z273 See Combustion Surround Assy 7768867 Collector Cover Second Pass Z276 Screw – Second Pass Collector Cover Z277 Baffle 4” E881 Anode Rod (Titanium) Z091 Baffle 2” E880 Wire Harness – Service Panel Z279 Hot Outlet Nipple (front connect) 7768868...
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Page 58: Ec96/380 Combustion Surround Assy
8.2 Combustion Surround (EC96/380) Fig. 20... - Page 59 Combustion Surround Item No Description Part No See Combustion Surround Assy Z273 Rivet 8-32 x .49 7768875 Keeper Latch & Catch Z285 Screw 8-32 x ½ RHCR Z286 Surround Ring Z287 Control Assembly 7768884 Aquastat E883 Main Power Switch E884 Combustion Surround Base 7768876 Surround Head...
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Page 60: Ec96/380 Combustion System Assy
8.3 Combustion System Assembly (EC96/380) Fig. 21... - Page 61 Combustion System Assembly (EC96/380) Item No Description Part No See Combustion System Assy 7768867 Blower-Fasco (only) 7768878 Hose Tubing 3/16” I.D. Z280 Screw 10-32 x ¾ SHCS Z291 O-Ring – 70mm x 3mm 7768879 Gas Valve G125 Venturi 7768880 Nipple – ¾” NPT Black Z293 Reducer Z294...
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Page 62: Ec96/380 Ignition Control System
Parts List and Illustrations Ignition Control Assembly (EC96/380) Fig. 22... - Page 63 8 Parts List and Illustrations Ignition Control Assembly Item No Description Part No See Ignition Control Assembly 7768884 Terminal Strip Z260 Screw #8-18 x ½ Z305 Keps Nut #6-32 Z281 Terminal Strip Flat Mount Z259 Screw #6-32 x 3/8 Z282 Transformer E888 Rivet...
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Page 64: Concentric Flue Component List (100/150Mm Dia.)
Parts List and Illustrations 8.5 Concentric Flue Component List (100/150mm dia.) Fig. 23 Concentric Flue Components Item No Description Part 90° Elbow with Clamp 5136162 Horizontal Flue Terminal E236 Wall Bracket (not shown) 5136163 1000mm Cuttable Flue with Clamp 5136159 500mm Flue with Clamp 5136160 Condensate Trap Tee c/w Syphon... -
Page 65: Unvented System Kit 7703930 - Parts List
Parts List and Illustrations Unvented System Kit 7703930 - Parts List Fig. 24 Item No Description Combined Pressure Reducing Valve/Strainer Check Valve Assembly Expansion Valve Expansion Vessel (25 Litre) Temperature/Pressure Relief Valve Tundish from Expansion Valve and T/P Valve Hose Assembly... -
Page 66: Appendix
Appendix ECOflo Serial Number Date Code Reference Year of Manufacture Month of Manufacture W= 2020 A= January X= 2021 B= February Y= 2022 C= March Z= 2023 D= April A= 2024 E= May B= 2025 F= June C= 2026 G= July D= 2027 H= August J= September... - Page 67 Notes _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________ _____________________________________________________________...
- Page 68 • REMEHA – ENGINEERING EFFICIENCY SINCE 1935 Reliably engineering high-performance and high-efficiency heating solutions. • ANDREWS WATER HEATERS – BUILT TO PERFORM UK’s No. 1 commercial water heaters of choice for quality and reliability. • POTTERTON COMMERCIAL – TOTALLY DEPENDABLE Heating solutions that customers can rely on and services they can trust.