Baxi ASSURE 70i Installation And Service Manual
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Baxi ASSURE 70i Installation And Service Manual

Direct and indirect cylinder
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United Kingdom
en
Installation and Service Manual
Direct and Indirect cylinder range
ASSURE
70i - 300i
70D - 300DDDD
Important
Please read & understand all these instructions before commencing installation.
Please leave this manual with the customer for future reference

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Summary of Contents for Baxi ASSURE 70i

  • Page 1 United Kingdom Installation and Service Manual Direct and Indirect cylinder range ASSURE 70i - 300i 70D - 300DDDD Important Please read & understand all these instructions before commencing installation. Please leave this manual with the customer for future reference...

  • Page 2: Table Of Contents

    Contents 7. Commissioning 7.1 General 7.2 Checklist before commissioning 1. Introduction 7.3 Commissioning procedure 1.1 General 7.4 Benchmark 1.2 Symbols used 8. Operation 1.3 Abbreviations 1.4 Liabilities 8.1 General 2. Safety 9. Maintenance 2.1 General safety warnings 9.1 General 2.2 Recommendations 9.2 Standard inspection &...

  • Page 3: Introduction

    In the interest of customers, we are continuously 1. Introduction endeavouring to make improvements in product quality. All the specifications stated in this document 1.1 General are therefore subject to change without notice. The following instructions are offered as a guide to the Our liability as the manufacturer may not be invoked in user and installer.

  • Page 4: Safety

     - Water may drip from the discharge pipe of the pressure-relief device and this pipe must be left WARNING open to the atmosphere; (see page 18 for more details) If water discharges from the Temperature/ -The pressure-relief device is to be operated Pressure relief valve on the cylinder shut regularly to remove lime deposits and to verify that down the boiler.

  • Page 5: Technical Specifications

    3. Technical specifications Max direct kW rating Immersion heat up times (Btm immersion, 3kW) Immersion heat up times (Top immersion, 3 kW) Immersion heat up times (Both immersions, 6kW) Coil surface area (m²) 0.58 0.58 0.72 0.79 0.79 0.79 0.79 0.79 0.79 0.79...
  • Page 6 Max direct kW rating Immersion heat up times (Btm immersion, 3kW) Immersion heat up times (Top immersion, 3 kW) Immersion heat up times (Both immersions, 6kW) Heat loss (kWh/24hrs) 0.91 1.05 1.18 1.20 1.42 1.61 1.69 Hot water capacity (volume to >40°C) Weight empty (kg) Weight full (kg) ¹...
  • Page 7 Outer casing White pre-coated corrosion protected steel body shell. Polypropylene top and base mouldings. ABS electrical controls housings and enclosures. Water container Duplex stainless steel. 100% pressure tested to 1.6MPa (16 bar). Connections Stainless steel grade 1.4404 (316 L) Pipe connections accept 22mm outside diameter pipe (compression nuts and olives supplied).
  • Page 8 Ø 579 T&P VALVE 30° 45° * ONLY ON DDD AND DDDD MODELS Figure 1: General dimensions - Direct models Size DIMENSIONS (mm) Size DIMENSIONS (mm) 125DD 1102 125i 1102 145DD 1229 145i 1229 170DD 1020 1384 170i 1020 1384 210DD 1095 1486 210i...
  • Page 9 Ø 579 T&P VALVE 30° 27° 47° 45° Figure 2: General dimensions - Indirect models BALANCED COLD WATER 3 BAR PRESSURE CONNECTION (IF REQUIRED) REDUCING VALVE TO HOT OUTLET STOP COCK (IF USED IN THIS POSITION) MAINS WATER SUPPLY SECONDARY RETURN 8 BAR PRESSURE RELIEF VALVE Back flow prevention TAPPING (IF REQUIRED,...

  • Page 10: Description Of The Product

    4.5 Storage and Handling 4. Description of the product If the unit is to be stored before installation it must be 4.1 General description placed upright on a secure, level surface and be in a dry, frost free environment. The support surface must This product is a purpose designed unvented water be capable of supporting the packaged weight of the heater.
  • Page 11 Figure 4: Typical system installation schematic (not to scale)

  • Page 12: Before Installation

    Ascending spray type bidets or any other class 1 5. Before installation back syphonage risk requiring that a type A air gap be employed. 5.1 Installation regulations Steam heating plants unless additional and appropriate safety devices are installed. Situations where maintenance is likely to be WARNING neglected or safety devices tampered with.

  • Page 13: Installation

    6.2 Water connections 6. Installation 6.1 General WARNING After reading the previous sections in these instructions Under no circumstances should the and choosing a suitable location for the unit please factory fitted temperature/pressure install, paying attention to the following hydraulic, relief valve be removed other than electrical and commissioning sections.
  • Page 14 Baxi Assure to be isolated from the the direction of flow arrows pointing in the correct mains supply for maintenance or servicing.
  • Page 15 Secondary circulation To Hot Outlets Cold Water If secondary circulation is required it is recommended Inlet that it be connected to the cylinder as shown (see figs. 9 and 9b). Check Valve The secondary return pipe should be in 15mm pipe and incorporate a check valve to prevent back flow.
  • Page 16 Discharge Note: To comply with the Water Supply (Water Fittings) It is a requirement of Building Regulation G3 that any Regulations, the tundish should incorporate a suitable discharge from an unvented system is conveyed to air gap. where it is visible, but will not cause danger to persons in or about the building.
  • Page 17 Worked example of discharge pipe sizing (c) if plastic pipes are used as branch pipes carrying discharge from a safety device they should be either polybutylene (PB) to Class S of BS 7291-2:2006 or Fig. 11 (page 18): shows a G1/2 temperature relief valve cross linked polyethylene (PE-X) to Class S of BS with a discharge pipe (D2) having 4 No.
  • Page 18 Maximum Resistance Minimum Size Of Minimum Size Of Resistance Valve Allowed, Expressed As A Discharge Pipe Discharge Pipe D2 Created By Each Outlet Size Length Of Straight Pipe From Tundish Elbow Or Bend (I.E. No Elbows Or Bends) 22mm up to 9m 0.8m G1/2 15mm...

  • Page 19: Electrical Connections

    6.3 Electrical connections Where the Assure is fitted with two immersion heaters each heater is rated 3kW at 240V~ The immersion heater(s) should be wired in In case of difficulty contact customer support on accordance with Fig 13. The immersion heater(s) 0344 871 1545 MUST be earthed.
  • Page 20 SPINDLE POSITIONS THERMAL CUT-OUT RESET BUTTON = MINIMUM TEMP = MAXIMUM TEMP = APPROX 60 °C ROTATE SPINDLE CLOCKWISE FOR TEMPERATURE INCREASE AND COUNTER CLOCKWISE FOR TEMPERATURE DECREASE TEMPERATURE ADJUSTING SPINDLE Figure 14: Thermostat adjustment Space heating systems controls The controls provided with the cylinder will ensure INDIRECT models the safe operation of the unit within the central The indirect controls and back-up immersion heater...
  • Page 21 4. DO NOT MOUNT WIRING CENTRE ON CYLINDER. 5. THE ABOVE DIAGRAM IS FOR GUIDANCE ONLY, BAXI ACCEPT NO LIABILITY FOR ANY LOSS OR DAMAGE ARISING FROM ANY ERRORS OR OMISSIONS. THAT MAY BE INADVERTENTLY CONTAINED WITHIN THIS DIAGRAM. THE VARIOUS EQUIPMENT MANUFACTURERS SHOULD BE CONSULTED TO CONFIRM THE CORRECT OPERATION OF THEIR PRODUCTS WITHIN THE SYSTEM.

  • Page 22: Filling The Installation

    WARNING Should the Baxi Assure cylinder be used in conjunction with a boiler that controls the water temperature via a sensor connected to the boiler controls it should be noted that the factory fitted indirect thermostat and thermal cut-out MUST NOT be disconnected or bypassed.

  • Page 23: Commissioning

    Switch on the boiler, ensure the programmer is 7. Commissioning set to Hot Water and allow the cylinder to heat up to a normal working temperature (60 - 65°C 7.1 General recommended). If necessary the temperature can be adjusted by After filling the installation with water as described in inserting a flat bladed screwdriver in the adjustment the previous section please follow the procedure below...

  • Page 24: Operation

    Temperature controls - Indirect units 8. Operation A combined thermostat and thermal cut-out is provided for the control of the external boiler. The 8.1 General thermostat is factory set to give a water storage temperature of approx. 60 C, however it can be set to control between 10 C and 70 C.

  • Page 25: Maintenance

    9. Maintenance 9.1 General Maintenance requirements Unvented hot water systems have a continuing maintenance requirement in order to ensure safe working and optimum performance. It is essential that the relief valve(s) are periodically inspected and manually opened to ensure no blockage has occurred in the valves or discharge pipe work.
  • Page 26 Close the drain cock. should be sought from a competent installer or With a hot tap open, turn on the cold water supply Baxi Customer Support. and allow unit to refill. DO NOT switch on the immersion heater(s) or boiler until the unit is full.

  • Page 27: Troubleshooting

    MUST be 10.1 Fault finding carried out by a competent installer for unvented Important water heating systems. In case of doubt contact Baxi customer support. After servicing, complete the relevant Service Interval Record section of the Benchmark Checklist Spare Parts located on pages 35 of this document.

  • Page 28: Decommissioning

    11. Decommissioning 11.1 Decommissioning procedure Isolate electrical supplies and make safe Isolate the water supply Drain the cylinder Drain the primary circuit (indirect only) Remove cylinder Cap pipework Environmental information Products are manufactured from many recyclable materials. At the end of their useful life they should be disposed of at a Local Authority Recycling Centre in order to realise the full environmental benefits.

  • Page 29: Spare Parts

    12. Spare parts 12.1 Spare parts list A full range of spare parts are available for the cylinder range. Refer to the Technical Data label on the unit to identify the model installed and ensure the correct part is ordered. ITEM DESCRIPTION PART NUMBER...
  • Page 30 Figure 18: Cold water inlet controls spares, exploded views Figure 18 A: 3 bar Pressure Reducing Valve, exploded view Figure 18 B: 8 bar Expansion (Pressure Relief) Valve, exploded view Figure 18 C: Stopcock...
  • Page 31 Direct control assembly and Upper Assembly on Indirect cylinders Spare components are common to Upper and Lower Direct Control Assemblies except for the Upper element 34 and Lower element 16 Figure 19: Direct controls and immersion heater, exploded view...
  • Page 32 Indirect Control Assembly Figure 20: Indirect controls and immersion heater, exploded view...
  • Page 33 Units 9 & 10 780 South Street Hexagon Business Centre Whiteinch Springfield Road Glasgow G14 0SY Hayes Middlesex UB4 0TY Tel: 0141 434 1530 Tel: 020 8606 3567 Alternatively contact your local supplying merchant, wholesale branch or use our online stockist finder:- https://www.baxi.co.uk/trade/boilers-parts-and-accessories/parts/find-a-stockist...

  • Page 34: Benchmark Checklist

    Benchmark checklist...

  • Page 35: Commissioning & Service Records

    Commissioning & service records...
  • Page 36 For the warranty to be maintained, please make sure... Benchmark checklist is completed Warranty is registered within 30 days The cylinder has an annual service For full terms and conditions, visit www.baxi.co.uk/terms. Failure to adhere to terms and conditions will void your manufacturer’s warranty. Baxi Brooks House,...

This manual is also suitable for:

Assure 125iAssure 145iAssure 170iAssure 210iAssure 250iAssure 300i ... Show all

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