Parker Sporlan B5D Series Installation And Servicing Instructions

Contents

Parker Sporlan B5D Series Installation And Servicing Instructions Manual pdf 4 page image

Page 4 – Bulletin 30-21Figure 3 shows piping schematics only to illustrate the generalinstalla tion of the Heat Reclaim Valves. Sporlan recommendsthat rec og nized piping references be consulted for assistancein piping pro ce dures. Sporlan is not responsible for systemdesign, any damage resulting from system design, or for mis-application of its products.Proper support of heat reclaim valves is essential. Concentratedstresses resulting from thermal expansion or compressorvibrations can cause fatigue failure of tubing, elbows and valvefittings. Fatigue failures can also result from vapor propelledliquid slugging, and condensation induced shock. The useof piping brackets close to each of the 3-Way valve fittings isrecommended.HEAD PRESSURE CONTROL FORRECLAIM SYSTEMSWhen employing heat reclaim on a refrigeration system, the addi-tion of head pressure controls is important not only to maintainliquid pressure at the expansion valve inlet, but also to assure theavailability of quality hot gas at the reclaim heat exchanger.See Sporlan Bulletin 90-30, Head Pressure Control Valves forhigh and low ambient stability. When low ambient condi-tions are encountered during fall-winter-spring operation, theSporlan head pressure controls hold back liquid refrigerant soa portion of the condenser surface is inactive. This results in arise in condensing pressure.NOTE: To calculate additional charge required for headpressure control, see Bulletin 30-20, or Bulletin 90-30-1.TYPICAL PIPING SCHEMATICSFigure 3Q Use normally open solenoid valve and piping if pumpout is required and “C” model Heat Reclaim Valve isused, see note 4. Or, if a normally closed valve canbe used then use XSP-10. It has a 0.031” orifice, thismay eliminate need of cap tube or Sporlan Restrictor2449-004.W This check valve required if lowest operating ambienttemperature is lower than evaporator temperature.E Restrictor 2449-004 may be required to control pumpout rate on inactive condenser.R Pilot suction line must be open to common suctionwhether or not Heat Reclaim Coil is installed at timeof installation and regardless of Heat Reclaim Valvemodel/type.T Proper support of heat reclaim valves is essential.Concentrated stresses resulting from thermal expan-sion or compressor vibrations can cause fatiguefailure of tubing, elbows and valve fittings. Fatiguefailures can also result from vapor propelled liquidslugging, and condensation induced shock. The useof piping brackets close to each of the three wayvalve fittings is recommended.NormalCondenserCheckValve3-Way HeatReclaim Valve ReclaimCondenserA8 PressureRegulating ValveA9 Hot GasBypass Regulator(optional)Normally OpenSolenoid Valve (XPM)ReceiverCompressorSERIESCONDENSERSQTREPARALLELCONDENSERS3-Way HeatReclaim ValveNormalCondenserCheckValveReclaimCondenserCheck Valveto suctionTEQREW(optional)Normally OpenSolenoid Valve (XPM)CheckValveA8 PressureRegulating ValveA9 Hot GasBypass RegulatorNormally ClosedSolenoid ValveReceiverCompressor