Daikin GCU compact Series Installation And Operating Instructions Manual

Contents

Daikin GCU compact Series Installation And Operating Instructions Manual Manual pdf 51 page image

8 Hydraulic connectionInstallation and operating instructions51Gas Combi UnitFloor-standing gas condensing boiler with integrated heat storage008.1543899_02 – 04/2019 – EN8 Hydraulic connectionWARNINGTo prevent flue gas from escaping, the storage tank mustbe filled to overflowing when commissioning the GCU com-pact.DANGER: RISK OF BURNINGHigh temperatures can occur in the solar storage tank.Therefore, sufficient scalding protection must be includedwhen the hot water system is installed (automatic hot watermixing device).CAUTIONWe recommend equipping the GCU compact with plasticgravity brakes. They are suitable for maximum operatingtemperatures of 95 °C.8.1 Hydraulic system connectionINFORMATIONA selection of diagrams of the most common systems isshown below. The arrangements shown are only ex-amples, and are no substitute for careful system planning.Further diagrams can be found on the homepage on theback of this manual.Short name Meaning1 Cold water distribution network2 Hot water distribution network3 Heating flow4 Heating return flow5 Mixing circuit6 Circulation7 Check valve, return valve7a Circulation stop valves8 Solar circuit3UV DHW 3-way distribution valve (hot water/heater)3UVB1 3-way mixer valve (heater/internal boiler circuit)Short name MeaningCW Cold waterDHW Domestic hot waterDSR1 Pressurised solar systemFLS FlowSensor - solar flow rate and inflow temperaturemeasurementH 1, H 2 … H m Heating circuitsMAG Diaphragm expansion vesselMIX 3-way mixer with drive motorMK1 Mixer group with high-efficiency pumpMK2 Mixer group with high-efficiency pump (PWM-regu-lated)PK Boiler circuit pumpPMi Mixing circuit pumpPS Solar operating pumpPS1 Solar operating pumpPZ Circulation pumpRDS2 Pressure stationRoCon BF Control GCU compactRoCon M1 Mixer circuit controlRPS4 Solar control and pump unitSK Solar panel fieldSV Safety overpressure valvet AU Outside temperature sensort DHW Storage tank temperature sensort Mi Inflow temperature sensor, mixer circuitTK Solaris collector temperature sensorTR Solaris return flow temperature sensorTS Solaris storage cylinder temp. sensorTV Solaris inflow temperature sensorVS Burns guard VTA32Tab. 8-1 Legend for Fig. 8-1 to Fig. 8-2