Accorroni RPE Series Technical Information

Contents

Accorroni RPE Series Technical Information Manual pdf 41 page image

Pag. 39Fig. 26ELECTRICAL SCHEMA HEAT/COOL REMOTEATTENTION! It is very important to installthe net water filter in entry of the chiller, (fig.25).Connect the hydro pipes to the water entry/issueattachments (side position and tagged fromfactory).ATTENTION! Before filling of the plant, makesure that all pipes are empty from sand, slagor rust.It is recommendable to clean the pipingbefore filling.To fill the plant and check out if the interception’svalves and the discharge tap are working good.To eliminate all air formations in the piping throughthe relief valves.To continue to fill the plant till pressure 1,5 bar.check out The hydro attachments and theconnections of the joints. After some hours it isrecommendable to verify the pressure anothergame and if necessary to make a reintegration.4.3 ELECTRICAL FEEDINGThe models RPE/HPE X5, 7,5 and 8,5 have tobe on tension of 230 V ~ 50 Hz. All othermodels can be feeded with with tension400V~ 3N 50Hz or 230 V ~ 50 Hz.ATTENTION! All electrical connections haveto be done from a skilled technician.Respect the local low norms in reference.To install an electrical plant switcher off with 3mm opening.For the triple phase’s plant can be used a magnetthermo switcher.4.3.1 Electrical connections On/Off andHeat/Cool remoteCollect C and CP2 (On/Off), and C and CP1(Heat/Cool) (fig. 26).Only for the models heating pump, theconfiguration have to be made in the Menu (CnF)and select in the parameter H27 a value between0 and 1 (see section “How to enter inprogramming, point 2.1.2).The circulated pressure is not elevated and itcan be used cables with section 0,75 mm² , alsofor big distance.The connection cables for ON/OFF andHEAT/COOL remote have to be separatedfrom the pressure conductors.4.4 HYDRO PUMPThe hydro pump can be configured in two modes:1. continue function (from factory);2. on demand (compressor).From factory the pump is starting in mode Onand it switch off by Off.When the water temperature reaches the valueSET and the compressor will be switched off,the pump remains ON.This function gives the optimal work of the unitand it is recommendable for the big part ofplants.It is possible to select the configuration “ondemand”. In this case the pump will be activatedwhen the water temperature needs it.When the water temperature reaches the valueSET the pump switches off (fig. 27).Normally open COOL, close HEATNormally open ON, close OFF