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Summary of Contents for Thermsaver unvented water heater
- Page 1 3bar kit version...
- Page 2 READ THESE INSTALLATION AND MAINTENANCE INSTRUCTIONS BEFORE COMMENCING WITH EXTERNAL EXPANSION TANK UNVENTED CYLINDERS ARE DESIGNED TO BS STANDARD AND Your vessel is made by one of the worlds leading unvented water heater INSTALLED TO RELEVANT BUILDING REGULATIONS manufacturers. THE RELEVANT REGULATIONS ARE Your water heater is made from Duplex Stainless Steel, which is one of the toughest and best grades of steel currently available.
- Page 3 ● All your water – hot and cold – is direct from the mains ● Site the unvented water heater wherever convenient ● Your vessel fills your bath in minutes and will run two at the same time (subject to good plumbing and flow rates) ●...
- Page 4 ● 1 Element on IDH indirect models up to 305 litres and 80 litre STANDARD ENERGY LOSSES DH direct model The heat loss of each Unvented Unit while ● 2 Elements on DH direct models from 130 up to 305 litres. maintaining the temperature of the stored water at 65 degrees Additional elements from 215 to 305 litres are available on Celsius.
- Page 5 CONNECTING THE WATER SUPPLY DRAIN TAP ● Pipework is not supplied A drain tap to drain the unit must be fitted to the cold-water inlet ● pipe somewhere between the unit and the cold water All pipework should be installed using good plumbing practice. valve assembly and at as low a level as possible, see fig.
- Page 6 SECONDARY CIRCULATION CONNECTION DIAGRAM Fig.3 2 * 2 PORT (S-PLAN) VALVE SYSTEM GUIDANCE LAYOUT ONLY Fig.4...
- Page 7 2 PORT VALVE + 3 PORT MID POSITION VALVE (Y-PLAN) SYSTEM Fig.5 GUIDANCE LAYOUT ONLY WIRING As our heating element is Incoloy 825 and is fitted with a cut-out and thermostat for safety, a non-standard 1 " boss is fitted to the All electrical wiring should be carried out by a registered electrical unit.
- Page 8 TUNDISH DRAINING The tundish supplied must be fitted visible to the occupier. The Switch off electrical power to immersion heaters and/or shut down discharge pipe must be 22mm copper pipe. Regulations do not the boiler. Close the stopcock valve to isolate the unit. permit more than 3 x 90-degree bends between the unit Attach hosepipe to the drain cock having sufficient length to take and the outflow.
- Page 9 G3 REQUIREMENT areas etc. are acceptable providing that where children may play or otherwise come into contact with discharges a wire ‘…there shall be precautions…to ensure that the hot water cage or similar guard is positioned to prevent contact, whilst discharged from safety devices is safely conveyed to where it is visible maintaining visibility.
- Page 10 TABLE 1 SIZING OF COPPER DISCHARGE PIPE (D2) FOR COMMON T&P RELIEF VALVE SIZES Valve outlet Size Minimum size of Minimum size of Maximum resistance Resistance created by discharge pipe D1 discharge pipe D2 allowed, expressed as a each elbow or bend from tundish length of straight pipe (i.e.
- Page 11 GUARANTEE This unvented vessel carries a full 25-year cylinder guarantee against faulty materials or manufacture provided that: • It has been correctly installed as per the Installation Manual and all the relevant regulations and codes of practice in force at the time. •...
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