REMKO PWL Series Operation,technology,spare Parts

Contents

REMKO PWL Series Operation,technology,spare Parts Manual pdf 4 page image

4REMKO PWLSafety informationThe units were subjected to ex-tensive material, functional andquality inspections and tests priorto delivery.The units can however constitutea hazard if used improperly byuntrained persons or not for theintended purpose.Always observe the following safe-ty information:■ The locally applicable buildingregulations must be observed.■ The operator is responsible forcorrect installation of the units,correct electrical installation andsafe operation of the units.■ The units must be installedand operated in a manner thatexcludes any risk to personsthrough radiated heat.■ The units must only be attachedto constructions or ceilings withsufficient load bearing capacity.■ Attachment must take placeusing suitable anchors to beattached to the unit.■ Only trained specialists mayinstall and connect the heatingmedium, establish electrical con-nections and carry out mainte-nance.■ The units must not be installed,mounted and operated in loca-tions subject to fire and explosi-on hazards or exposed to dust-laden/aggressive atmospheres.■ The units must be installed out-side traffic zones, e.g. also theoperating areas of cranes.Planning informationFor an optimal room temperature,several basic rules must be follo-wed for room heating and coolingplanning.Heating modeThe following data is required forroom heating planning:■ Room heat demandQH (kW)■ Basic room dimensions(length, width, height)■ Required air change■ Required room temperature■ Required heating medium tem-perature for flow and returnThe air inlet temperature of theunits should not be below 34°Cand not above 42°C.At an outlet temperature below34°C, there is a risk ofunpleasant, cool draughts in thearea of workplaces.If the outlet temperature is abo-ve 42°C, an increased upcurrentof hot air will occur in the ceilingarea.The range of the hot air current isreduced and the air in the roomis inadequately penetrated by thehot air current and intermixed.Undesired “cold air zones“ formin the room, and in contrast, anexcessive cushion of hot air formsin the ceiling area.This causes unnecessary heatlosses.Cooling modeThe following data is required forroom cooling planning:■ Room cooling loadQk (kW)■ Basic room dimensions(length, width, height)■ Required room temperature andpossible relative humidity■ Required cooling medium tem-peratures for flow and returnTo avoid unpleasant draughts atworkplaces, the air outlet tem-perature in cooling mode shouldbe maximum 6 – 8 K below theambient temperature.An excessive temperature dif-ference (> 8 K) can lead to theformation of unpleasant “cold airzones”.The circulated total air volume ofthe units per hour should be about4 to 5 times the room volume.With inadequate air circulationvolume, the required room climateis achieved very slowly and withdelay.An excessive air circulation volumeis preferable since the system isable to respond more dynamicallyand effectively.The air circulation volume can beincreased using external aids (e.g.ceiling fans).