Daikin GCU compact Series Installation And Operating Instructions Manual

Contents

Daikin GCU compact Series Installation And Operating Instructions Manual Manual pdf 53 page image

9 Service and maintenanceInstallation and operating instructions53Gas Combi UnitFloor-standing gas condensing boiler with integrated heat storage008.1543899_02 – 04/2019 – EN9 Service and maintenance9.1 General information regardinginspection and maintenanceRegular inspection and maintenance of the heating system reducesenergy consumption and ensures a long life and smooth operation.INFORMATIONHave inspection and maintenance carried out by author-ised and trained heating engineers once a year and, if pos-sible, before the heating period. This will avoid malfunc-tions during the heating period.We recommend an inspection and maintenance contract toensure regular inspection and maintenance.Tests performed during the annual inspection▪ General condition of the heating system, visual inspection of con-nections and pipes.▪ Check condensate drain and clean if necessary.▪ Check of the water pressure for the cold water supply (<6 bar),pressure reducer installation or adjustment as required.▪ Burner operation and burner settings.▪ Visual inspection of storage tank water container fill level(see Chap. 9.2.2).If necessary, replenish water (see Chap. 9.2.5), determine andremedy the reason for the low water level.▪ Check the system water pressure on the RoCon BF controller forthe GCU compact.Top up the water in the heating system until the pressure displayis in the permissible range (see Chap. 9.2.6).Maintenance work to be carried out annually▪ Cleaning the burner components, the combustion chamber andthe heating surfaces.▪ External cleaning of the storage tank and the protective cover.▪ Replacement of the wearing parts if required).▪ Documentation of the maintenance work in the operating manual.▪ Before restarting the GCU compact after maintenance work, therequirements for commissioning according to Chap. 5.2 must bechecked and fulfilled.9.2 Inspection and maintenance tasksDANGER: RISK OF ELECTROCUTIONTouching live parts can result in electric shock and lead topotentially fatal injuries and burns.▪ Before beginning work on the GCU compact, disconnectit from the power supply (fuse, switch off the mainswitch) and secure against unintentional restart.DANGER: RISK OF BURNINGDanger of burning on hot surfaces.▪ Let the burner cool down sufficiently before dismantling.▪ Wear protective gloves.Cleaning the protective cover and storage tank▪ The low-maintenance plastic only needs to be cleaned with a softcloth and a mild detergent.▪ Do not use any cleaners with aggressive solvents (damage to theplastic surface may occur).9.2.1 Checking the connections and pipesWARNINGImproperly performed work on power or gas lines can en-danger life and health and impair the operation of theGCU compact.▪ Damage repair to power and gas lines on the GCU com-pact may only be carried out by heating technicians au-thorised and trained by the gas or power supply com-pany.1 Remove the protective coverFig. 9-1 Unhook the rear protective cover, lift and remove for-wards.2 Check all flue gas and water-conducting components and con-nections for leakage and damage. If damaged, determine thecause and change the damaged parts.3 Check all components of the flue system for leakage and dam-age. Repair damaged parts or replace them.4 Check all electrical components, connections and pipes. Repairdamaged parts.9.2.2 Check and clean combustion chamberand condensate drainDANGER: RISK OF BURNINGDanger of scalding from hot storage water.▪ Before dismantling the condensate drain, allow the stor-age tank to cool sufficiently.▪ Wear protective gloves.WARNING (UK ONLY)If filling or topping up the storage tank is done by means ofthe boiler filling and drain valve, a temporary filling loopmust be used with the appropriate backflow preventiondevice in accordance with clause G24.2, Guidance to theWater Supply (Water Fittings) Regulations 1999.The connection and leakage line of the condensate drain must befree from impurities.1 If a solar system (DrainBack system) is connected and is in op-eration, switch it off and empty the collectors.2 Remove the burner, check the burner surface and clean if ne-cessary (see Chap. 7.4 and Chap. 9.2.4).