User manual HONEYWELL SM152 DATASHEET

[. . . ] SM152 Diaphragm safety valve for closed water heaters Product specification sheet Application Diaphragm-type safety valves of this type are used to protect pressurised water heaters according to the require-ments of DIN 4753, Part 1 and DIN 1988. In accordance with statutory requirements, the diaphragm safety valve is preset to the required fixed set pressure by the manufacturer and is sealed with an embossed security cap marked with the test badge and pressure rating to prevent unauthorised tampering with the setting. [. . . ] Full shutoff must be achieved if the system pressure falls to below 80% of the nominal set pressure of the valve. For valves rated up to 3. 0 bar, the closing pressure can be taken as 0. 6 bar minimum. AA = Not chrome plated, 6. 0 bar SM152- . . . AB = Not chrome plated, 8. 0 bar SM152- . . . AC = Not chrome plated, 10. 0 bar SM152- . . . BC *= Chrome plated, 10. 0 bar SM152- . . . Z = special setting, when ordering, be sure to indicate set pressure * 1/2" connection size only Special Versions available on request Connection size Connection size Inlet Connection size Outlet Dimensions R R (mm) H h I Do 1/ 3/ 2" 4" 3/ 4" 1" 1" 1 1/4" 1 1/4" 1 1/2" 130 47 55 18 over 5000 2200 (6-10 bar) (1-10 bar) (1-6 bar) For water heaters with capacity (litres) Maximum permissible heat input (kW) TÜV Approval Nos. 123 91 87 40 28 23 50 42 36 18 14 14 up to 200 up to 1000 up to 5000 75 150 250 1/ " + 3/ ", 1") · W · p TÜV · SV · . . * - 617 · ( 2 4 TÜV · SV · . . * - 616 · 11/4" · W · 2200 · p TÜV · SV · . . * - 700 · (1/2" + 3/4") · W · p . . * valid Approval No. 20 www. honeywell. com EN0H-1301GE23 R0807 · Subject to change SM152 Diaphragm safety valve Installation Example Installation Guidelines · · Safety valve must be installed in the cold water supply pipework before the water heater The installation must be carried out so that: o There are no shutoff valves or fittings, narrowing of the pipework or strainers between the water heater and the safety valve o Good access is provided for service and maintenance o The safety valve is fitted above the top of the water heater to avoid the need for draining down when exchanging the safety valve insert If there is no drainage facility in the room where the heater is installed, then the safety valve may be fitted in an adjacent area. DIN 1988, part 2 is to be observed Typical Applications Diaphragm safety valves are installed in accordance with their specification upstream of water heaters. The following are some typical applications: · · Central hot water supply systems Hot water storage units · Maintenance In accordance with DIN 1988, Part 8, the following operations should be carried out regularly. A planned maintenance scheme is recommended. EN0H-1301GE23 R0807 · Subject to change Operation Inspection Interval Carried out by User or specialist Safety valve: Check operation as follows: With the system operating, Every six months open the venting device. The resulting water flow must fully drain away. When the ventil is released, the valve must fully close. Safety valve: If a malfunction occurs, this may be cured by repeated manual opening and closing of the valve. If this method does not succeed, then an overhaul of the valve will be necessary. [. . . ] - TÜV · SV · . . * - 617 - 1/2" + 3/4" · W · p 1/ " 8 bar A152-1/2BB 2 3/ " A152-3/4BB 4 1/ " 10 bar A152-1/2BC 2 3/ " A152-3/4BC 4 . . * valid Approval No. - TÜV · SV · . . * - 616 - 11/4" · W · (2200) · p 6 bar 11/4" A160-11/4AA 8 bar 11/4" A160-11/4AB 10 bar 11/4" A160-11/2AC . . * valid Approval No. Automation and Control Solutions Honeywell GmbH Hardhofweg D-74821 Mosbach Phone: (49) 6261 810 Fax: (49) 6261 81309 http://europe. hbc. honeywell. com www. honeywell. com Manufactured for and on behalf of the Environmental and Combustion Controls Division of Honeywell Technologies Sàrl, Ecublens, Route du Bois 37, Switzerland by its Authorised Representative Honeywell GmbH EN0H-1301GE23 R0807 Subject to change without notice © 2007 Honeywell GmbH [. . . ]