Daikin GCU compact Series Installation And Operating Instructions Manual

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Daikin GCU compact Series Installation And Operating Instructions Manual Manual pdf 7 page image

1 General safety precautionsInstallation and operating instructions7Gas Combi UnitFloor-standing gas condensing boiler with integrated heat storage008.1543899_02 – 04/2019 – EN1.2.2 Intended useThe GCU compact may only be used for the heating of hot waterheating systems. It may only be installed, connected and operated inaccordance with the information in this manual.The GCU compact may only be operated with the integrated circula-tion pump and only in conjunction with a controller system approvedby us.Any other use beyond the intended use is considered as improperand will result in a loss of warranty. The operator alone shall bear re-sponsibility for any resulting damage.The GCU compact is suitable for operation with natural gas E, nat-ural gas LL and liquid gas (propane).Gases from regenerative sources (e.g. biogas) may contain sub-stances that cause corrosion of the gas valve and can impair itsfunction.The gas composition must comply with the requirements on condi-tions for feeding into the gas distribution grid (low-pressurepipelines) of the public standard gas supply. Gases from regenerat-ive sources (e.g. biogas) may only be used when they have beenpreviously prepared so that they can be fed into the public naturalgas grid in accordance with regional regulations.Intended use also includes compliance with the maintenance andservice conditions. Replacement parts must at least satisfy the tech-nical requirements defined by the manufacturer. This is the case,for example, with original spare parts.1.2.3 Installation roomWARNINGThe plastic wall of the storage tank of the GCU compactcan melt under the effects of external heat (>80 °C) and, inextreme cases, can catch fire.▪ Only install the GCU compact at a minimum distance of1 m to other heat sources (> 80 °C) (e.g. electricalheater, gas heater, chimney) and combustible materials.CAUTION▪ Only install the GCU compact if sufficient load-carryingcapacity of the ground of 1050 kg/m2 plus safety marginis ensured. The ground must be flat, horizontal andlevel.▪ Outdoor installation is not permissible.▪ Installation in an explosion-risk environment is not per-missible.▪ The electronic control system must not be exposed toweather effects such as rain and snow under any cir-cumstances.▪ The storage tank may not be exposed to continuous dir-ect sunlight, as the UV radiation and the effects of theweather will damage the plastic.▪ The GCU compact must be installed protected fromfrost.▪ Operate the GCU compact only if sufficient combustion air supplyis ensured. If the GCU compact is operated as an ambient air-in-dependent device with a concentric air/flue gas system (LAS) di-mensioned according to our standard, this is automatically en-sured and there are no further conditions regarding the installationroom. Only this method of operation is permissible for installationin residential rooms.▪ Make sure that there is an outside air opening of at least 150 cm2for ambient-air dependent or partial ambient-air independent oper-ation.▪ Do not operate the GCU compact in ambient-air dependent opera-tion in rooms with aggressive vapours (e.g. hair spray, perchloro-ethylene, carbon tetrachloride), strong dust formation (e.g. work-shop) or high humidity (e.g. laundry).▪ Avoid operating conditions that can cause heavy soiling of theburner. Do not operate the device if temporary heavy dust depos-its occur in the area of the air extraction system.▪ Always ensure the minimum distances from walls and other ob-jects ( Chap. 4.1).CAUTION▪ If a DrainBack solar heating system is connected,install the GCU compact far enough under the solar pan-els to allow complete emptying of the solar heating sys-tem. (Follow instructions in the DrainBack solar heatingsystem manual). An insufficient height difference maylead to destruction of the DrainBack solar heating sys-tem.▪ The GCU compact must not be operated in rooms withambient temperatures above 40 °C.1.2.4 Electrical installation▪ Electrical installations may only be carried out by electrical techni-cians and in compliance with valid electrical guidelines as well asthe specifications of the responsible energy supply company.▪ Compare the mains voltage (230 V, 50 Hz) indicated on the name-plate with the supply voltage before connecting to the mains.▪ Before beginning work on live parts, disconnect them from thepower supply (switch off main switch, remove fuse) and secureagainst unintentional restart.▪ Device covers and service panels must be replaced as soon asthe work is completed.1.2.5 Requirements for the heating waterDamage due to deposits and corrosion: To avoid corrosion productsand deposits, observe the relevant technical regulations and locallyapplicable requirements.Measures for desalination, softening or hardness stabilisation arenecessary if the filling and top-up water have a high total hardness(>3 mmol/l - total of the calcium and magnesium concentrations, cal-culated as calcium carbonate).Minimum requirements regarding the quality of filling and supple-mentary water:▪ Water hardness (calcium and magnesium, calculated as calciumcarbonate): ≤ 3 mmol/l▪ Conductivity: ≤ 1500 (ideal: ≤ 100) μS/cm▪ Chloride: ≤ 250 mg/l▪ Sulphate: ≤ 250 mg/l▪ pH-values (heating water): 6.5 - 8.5Measures for desalination, softening or hardness stabilisation orother suitable conditioning measures are necessary to maintain therequired water quality if the filling and top-up water have a high totalhardness or other properties divergent from the minimum require-ments.Using filling water and top-up water which does not meet the statedquality requirements can cause a considerably reduced service lifeof the equipment. The responsibility for this lies solely with the oper-ator.