User manual HONEYWELL NA228S-C

[. . . ] 0 bar differential pressure Duration of fill: Adjustable between 6 and 60 minutes (set at 12 minutes during manufacture) Water level: Signal emission by immersion electrodes for upper and lower water level limits. The technical approvals of the NA228S-C fully automatic refill unit were obtained from TÜV Bayern, Hessen, Sachsen, Südwest E. AW-SEZ/408/97 The tests are based on the following DIN standards and worksheets: DIN 3266, Parts 1 and 2 q Tests for electrical and mechanical safety 1/EN 61010 - 1. The flow rate and therefore the filling time for fast filling are dependent on the position of the ball valve lever. [. . . ] To make accurate settings, a high sensitivity pressure gauge should be fitted in the downstream system. 20 Viewing window for indicating the operating position of the backflow preventer (green visible = shutoff position) 21 Shutoff valve - for shutting off the inlet pressure from the supply and to the system 16 6 Changes over to the flow position only when the level in the expansion vessel falls below the lower set limit. 6 Setting valve - adjustable for either fast fill or refill of the system. variable flow quantity , corresponding to the curves illustrated simply by adjustment of the setting valve. During fully automatic refilling operation, the setting must always be on "Refill". 9 Fill counter - Totals the number of filling operations - Reset with a special key. 11 Discharge Tundish - for carrying away small quantities of water during the changeover operation. Assembly and commissioning must only be carried out by specialists according to regulations and codes of good practice. To enable subsequent service work a shutoff valve should be fitted on the inlet side and a shutoff and drain valve be fitted on the system side. Install the two immersion electrodes in the expansion vessel, with a height difference of approximately 200 mm. Connect an earth cable (not supplied) to the outside of the expansion vessel. Connect the earth and electrode cables between the expansion vessel and the automatic refilling unit 10. Set the lever for fast fill or refill (after filling, the lever should be set to "Refill"). 5mm² and three core) between the expansion vessel and the automatic refilling unit is to be supplied by the installer. Diode lamp is on, which means the set filling time has been exceeded and the system pressure has not been reached. Running time (minutes) The refilling time can be adjusted by turning the knurled knob. The level sensor ENS monitors the upper and lower fill levels of a conductive fluid, for example fresh or waste water. Its variable sensitivity means that it can also be used for other mediums. [. . . ] After wetting the electrode MAX turn response sensivity "Sens. " to maximum value until relay level increases. Relay decreases, when electrodes MAX and MIN are outside the liquid. If the illuminated indicator button lights up, the following faults may be present: q Filling time setting for the appliance too short to allow upper limit to be reached. [. . . ]