Installation, Maintenance and User Instructions AquaFlo II Issue 3 – December 2011 Please read these instructions carefully before commencing installation of the AquaFlo unvented water heater Please leave these instructions with the end user
INTRODUCTION The corrosion resistant AquaFlo Unvented cylinder is made from Duplex Stainless Steel. It is highly insulated with environmentally friendly foam enclosed in a rust resistant white steel case. It is available in Direct and Indirect versions in a family of 7 sizes from 90 – 300 litres. Twin Coil and Solar Direct units are available in 5 sizes from 150 - 300 litres.
WATER SUPPLY SITING THE UNIT AquaFlo is capable of delivering over 50 litres per minute when connected to a suitable mains supply. The high quality inlet control set with its 3 bar operating pressure has been designed to make the most of what is available, however the performance of any unvented system is only as good as the water supply.
GENERAL INSTALLATION CYLINDER CONNECTIONS All plumbing connections should be made to the Zip AquaFlo and its safety devices using the 15mm or 22mm compression fittings, nuts and olives supplied. CYLINDER RELIEF VALVE CONNECTIONS Safety relief valve connections should not be used for any other purpose and no valve should be fitted between the expansion relief valve and the storage cylinder. COLD MAINS PIPEWORK Run the cold main through the building to the place where the AquaFlo is to be installed.
Lower Coil: Two Boiler Installation Where the lower coil is to be used with a fossil fuel boiler, the pipework requirements are as per that of a Stainless Indirect single coil cylinder described earlier in this book. However the electrical requirements mean the control thermostat inserts into the lower tank stat pocket to control the boiler input and the limit stat into the upper tank stat pocket. The two port valve may be installed into either the flow or return pipework.
WIRING DIAGRAM 2 x 2 Port zone valves (Typically Honeywell ‘S’ Plan) W = White G = Grey Bl = Black O = Orange G/Y = Green/Yellow Br = Brown L = Live N = Neutral C = Common SL = Switched Live E = Earth 2 Port (Heating) Br G Bl O 1 Cutout (combined) duostat C E GY 2 2 C E 2 Port (DHW) 2 1 3 Wiring centre 1 2 3 4 5 6 7 8 9 10 1 2 3 4 5 6 7 8 9 10 L N E Br G Bl O GY 1 2 3 3 E L Pump N N 1 2 2 L SL L N E Programmer Room stat Boiler WIRING DIAGRAM 3 Port + 2 Port (Typ
COMMISSIONING SERVICING FILLING Check all connections for water tightness including any factory made connections such as the immersion heater and the temperature and pressure relief valve. The pressure in the expansion vessel should be checked to ensure it is 3 bar (45PSI). The valve is of the car tyre (Schrader) type. The hot tap furthest away from the AquaFlo should be opened before filling the system to let air out. The system should be flushed before use.
WARRANTY EXCLUSIONS –THE WARRANTY DOES NOT COVER The AquaFlo stainless steel vessel carries a transferable 25 year warranty against faulty materials or manufacture provided that: The effects of scale build up. Any labour charges associated with replacing the unit or its parts. Any consequential losses caused by the failure or malfunction of the unit.
ESSENTIAL CYLINDER INFORMATION Maximum water supply pressure .........................................12 Bar Set opening pressure of combined T&P valve...........................7 Bar Operating pressure...................................................................3 Bar Immersed electric element rating................................................... 3kW Maximum primary pressure (indirects only)..........................3 Bar Immersion heater length ...............................................
NOTE: It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice. IMPORTANT: No liability is accepted for incorrect use or installation of this product. Zip Heaters (UK) Ltd 14 Bertie Ward Way Dereham Norfolk NR19 1TE Telephone: 0845 602 4533 Telefax: 01362 692448 www.zipheaters.co.
