½ i " ½ i " ½ i " ½ i " ½ i " ¾ i " ¾ i " ¾ i " connection diameters Connecting the unit minimum 250 mm or 500 mm R C E unit pipes bottom Installation instructions S-HR series page 6...
4.1 Central heating system h / l available water flow at full load external installation pump in series pump index lines Installation instructions S-HR series page 7...
4.2 Expansion tank external installation pump with low velocity header choice of expansion tank Installation instructions S-HR series page 8...
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front view of the expansion tank module (dimensions in mm) expansion tank module side view of the module with S-HR unit (dimensions in mm) Installation instructions S-HR series page 9...
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4.3 Underfloor heating systems inlet combination and safety valve 4.4 Gas pipe 4.6 Condensation discharge pipe 4.5 Hot water supply (S-HR-T) Installation instructions S-HR series page 10...
4.7 Flue gas exhaust system and air supply system supply and exhaust system length supply and exhaust system Installation instructions S-HR series page 11...
9.1 Central Heating system Putting the unit into operation 9.2 Hot water supply 9.3 Adjustments Installation instructions S-HR series page 16...
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o l f i t a ° 5 ° 0 i t a o l f ° 5 i t a ° 5 e f f l a i ° 6 o l f i t a o i t i t a o l f °...
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i t a i t a i t a i t a i l c o i t i t a y t i i t a i t t t n i l i o installer adjustment possibilities o l f °...
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l i o o i t o i t o i t i t c i t c installer service possibilities i t a t i n o l f ° ° y t i installer error possibilities Installation instructions S-HR series page 19...
10 Switching off the unit 11 Commissioning and maintenance measuring point air pressure difference 11.1 Checking for contamination 11.2 Checking of the zero pressure control Installation instructions S-HR series page 20...
measuring point for CO adjustment screw zero pressure control 11.3 Checking the CO adjustment screw CO Installation instructions S-HR series page 21...
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11.4 Maintenance 11.5 Further checks 11.6 The frequency of maintenance Installation instructions S-HR series page 22...
12 Technical specifications ° ° o i t ³ ° o l i unit specifications Installation instructions S-HR series page 23...
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13 Diagram showing various parts of the unit unit diagram Installation instructions S-HR series page 24...
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unit description Installation instructions S-HR series page 25...
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14 Example diagrams for connecting the unit 14.1 Radiator installation without thermostat valves connecting of the unit to a radiator installation without thermostat valves Installation instructions S-HR series page 26...
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14.2 radiator installation with thermostat valves only connecting of the unit to a radiator installation with thermostat valves only Installation instructions S-HR series page 27...
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14.3 radiator installation with an under floor heating zone figure 20 connecting of the unit to a radiator zone and an underfloor heating zone Installation instructions S-HR series page 28...
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14.4 radiator installation and an independent underfloor heating zone connecting of the unit to a radiator installation and an independently controlled underfloor heating zone Installation instructions S-HR series page 29...
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14.5 two independent radiator zones connecting of the unit to two independently controlled radiator zones Installation instructions S-HR series page 30...
15 Error indication Installation instructions S-HR series page 31...
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Step key heating progr. on / off hot water progr. on / off pump progr. on / off Mode key Reset key STREBEL LTD. 1F, Albany park industrial estate frimley road, camberley surrey GU15 2PL Telephone: (01276) 685422 Fax: (01276) 685405...
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