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- Page 1 Grant Combined Volumiser/Low Loss Header Installation Instructions UK | DOC 0184 | Rev 0.3 | PROVISIONAL | February 2022...
- Page 2 This manual is accurate at the date of printing but will be superseded and should be disregarded if specifications and/or appearances are changed in the interests of continued product improve- ment. However, no responsibility of any kind for any injury, death, loss, damage or delay however caused resulting from the use of this manual can be accepted by Grant Engineering (UK) Limited, the author or others involved in its publication.
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Page 3: Table Of Contents
CONTENTS INTRODUCTION General Construction Product contents TECHNICAL DATA Technical specification Dimensions INSTALLATION General Regulations and Standards Location Clearances Unpacking Installation procedure Heat pump flow and return connections System connections Volumiser only connections ELECTRICAL General Electrical connections Immersion heater Electrical connections between lead and supplementary heat pumps OPERATION General... -
Page 4: Introduction
The Grant Combined volumiser/ low loss header can be used as the Grant Aerona air source heat pump to which it is connected. a volumiser only, either using the factory-fitted electric immersion Refer to Section 4 –... -
Page 5: Technical Data
Shell Mild steel Outer casing Galvanised mild steel, polyester powder coated Insulation Mineral wool Immersion Heater Make Cotherm TSR Output (kW) Electrical supply 230V 50Hz 1ph DIMENSIONS Figure 2-1: Grant Volumiser/Low Loss Header dimensions Section 2: Technical data Page 5... -
Page 6: Installation
INSTALLATION GENERAL UNPACKING This section gives details of the installation process for the Grant The Grant Combined volumiser/low loss header is supplied Combined volumiser/low loss header with backup immersion wrapped in bubble wrap with a separate kit of components heater. - Page 7 Heat pump 1 - Flow System Flow Heat pump 2 - Flow System Flow Second Zone System Return Heat pump 2 - Return System Return Heat pump 1 - Return Figure 3-1: Heat pump connections on left hand side Heat pump 1 - Flow System Flow Heat pump 2 - Flow System Flow...
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Page 8: System Connections
VOLUMISER ONLY CONNECTIONS demand, i.e. with all emitters and zone valves open. The flow rate It is possible, if required, to use the Grant Combined volumiser/ is then adjusted by rotating the regulating valve until the required low loss header as a volumiser only, either using the integral 3kW flow rate is indicated on the flow regulator scale. - Page 9 Flow to system Flow to system (Alternative positions) Flow to system (Alternative position) Flow from heat pump (Alternative position) Flow from heat pump Figure 3-4: Volumiser only connections Section 3: Installation Page 9...
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Page 10: Electrical
Tighten the cable gland to securely grip the cable. Figure 4-1: Location of immersion heater If the immersion heater fitted to the Grant Combined volumiser/ low loss header is to be used, it requires a 230V 50Hz single phase electrical supply. Refer to Section 4.2 – Electrical Connections. -
Page 11: Immersion Heater
Figure 4-3: Connection diagram for Grant Combined Volumiser/Low Loss Header IMMERSION HEATER CONTROL WIRING Temperature The operation of the immersion heater as a supplementary heat control dial source is controlled by the Grant Aerona³ heat pump. To connect the immersion heater control wiring to the electrical... -
Page 12: Electrical Connections Between Lead And Supplementary Heat Pumps
When using two Aerona³ heat pumps connected to the volumiser/ header, one of the two (the supplementary unit) will be controlled Grant Aerona³ ASHP by the other (the lead unit). Remote Controller The lead unit can be used to provide both Heating and DHW, but the supplementary unit will be used only for Heating. -
Page 13: Operation
Section 5.3 for the correct parameter settings. If a second Grant Aerona³ heat pump is to be used, refer to Section 5.5 for the correct parameter settings for the operation of a supplementary heat pump PARAMETER SETTINGS FOR SUPPLEMENTARY IMMERSION HEATER OPERATION Set the parameters as detailed in the table below. -
Page 14: Parameter Settings For Assisting Defrost Process
Depending on the overall system volume in place at the time of the defrost, it may be useful energising the supplementary immersion heater fitted to the Grant Combined volumiser/low loss header to assist the defrost process. The overall time for a defrost should never be more than 5 minutes (including the compressor protection ‘off’... - Page 15 Table 5-4: Supplemantary heat pump settings Parameter Display and input value Level Function description Group Code Default Min. Max. Setting Enable outgoing water set point 0 = Fixed set point 1 = Climatic curve Fixed outgoing water set point 45°C 23.0 60.0 ! NOTE !
- Page 16 GRANT ENGINEERING (UK) LIMITED Hopton House, Hopton Industrial Estate, Devizes, Wiltshire, SN10 2EU Tel: +44 (0)1380 736920 Fax: +44 (0)1380 736991 Email: info@grantuk.com www.grantuk.com...