User manual HONEYWELL R295P-F

[. . . ] It is necessary during installation to comply with local requirements, to follow codes of good practice and to follow the installation instructions. The installation location should be protected against frost and be easily accessible. [. . . ] ⷠIf the backflow preventer does not go to the shutoff position at the given operating pressure, check the valve insert, seal disc and seals as described in section 5 and replace them if necessary. FY 69) be fitted upstream to protect the backflow preventer against coarse dirt. ⷠFit shutoff valves 1 and 5 either side of the backflow preventer. Commissioning should be in the following sequence: 1. Slowly open shutoff valve 1 (when the minimum inlet pressure is reached the backflow preventer goes to the flow position) 2. When the system has been filled, the backflow preventer is ready for use. Shutoff occurs only when the supply pressure falls below the operating pressure of the pipe separater. These inspections and tests should be carried out at least once a year by the user or by a specialist. Depending on operating conditions, it may be necessary to carry out these tests and inspections more frequently. To be carried out by a specialist The time interval (DIN 1988 specifies 1 to 3 years) is dependant upon the site conditions. Relieve pressure from valve (for example by opening drain valve 7 ). Check valve insert and seal for good condition and if necessary clean or replace. [. . . ] Description Nominal size Part number Valve insert complete 10 0, 5 bar DN 65 R 295 A ­ 65 FA DN 80 R 295 A ­ 80 FA DN 100 R 295 A ­ 100 FA DN 125 R 295 A ­ 125 FA DN 150 R 295 A ­ 150 FA DN 200 R 295 A ­ 200 FA 1, 0 bar DN 65 R 295 A ­ 65 FB DN 80 R 295 A ­ 80 FB DN 100 R 295 A ­ 100 FB DN 125 R 295 A ­ 125 FB DN 150 R 295 A ­ 150 FB DN 200 R 295 A ­ 200 FB 1, 5 bar DN 65 R 295 A ­ 65 FC DN 80 R 295 A ­ 80 FC DN 100 R 295 A ­ 100 FC Seal ring set 8 DN 65 0901093 DN 80 0901094 DN 100 0901095 DN 125 0901143 DN 150 0901145 DN 200 0901147 Blanking plug with seal ring (pack of 5) 17, 18 DN 65-200 S 15 M ­ 1/2 Lip seal ring 19 DN 65 5350000 DN 80 5350300 DN 100 5350400 DN 125 2070300 DN 150 2067300 DN 200 2238900 Valve piston complete 14 DN 65 0900376 DN 80 0900377 DN 100 0900378 DN 125 0900379 DN 150 0900380 DN 200 0900381 7 Rear connection G1/2" Range: 0 - 4 bar, 0 - 10 bar, 0 - 16 bar, 0 - 25 bar Please indicate upper value of pressure range when ordering W 15 Elbow Galvanised malleable iron, G 1/2", for pressure gauge M 15 Relieve pressure from valve (for example by opening drain valve 7 ). Slowly open shutoff valve 5 and fill and vent the system. [. . . ]