Daikin ERQ100A7V1B Installation Manual

Also see for ERQ100A7V1B: Operation manual

Contents

ERQ100~140A7V1BInverter condensing unit4PW51321-1Installation manual8For ERQ140 onlyThe size of the gas side stop valve is Ø15.9 while the inter-unit pipingis Ø19.1. Use the standard supplied accessory piping to make theconnection. See figure 14.9.1. Preventing foreign objects from enteringPlug the pipe through-holes with putty or insulating material (fieldsupply) to stop up all gaps, as shown in the figure.Insects or small animals entering the outdoor unit may cause a shortcircuit in the electrical box.9.2. Cautions for handling stop valve■ The stop valves for air handling unit-outdoor connecting pipingare closed at shipment from the factory.The names of parts of the stop valve are shown in the figure.■ Since the side boards may be deformed if only a torque wrenchis used when loosening or tightening flare nuts, always lock thestop valve with a wrench and then use a torque wrench.Do not place wrenches on the valve cover.Do not apply force on the valve cover, this may result in arefrigerant leak.■ For cooling operation under low ambient temperature or anyother operation under low pressure, apply silicon pad or similarto prevent freezing of the gas stop valve flare nut (see figure).Freezing of the flare nut may cause refrigerant leak.9.3. How to use the stop valveUse hexagonal wrenches 4 mm and 6 mm.■ Opening the valve1. Place the hex wrench on the valve bar and turn counter-clockwise.2. Stop when the valve bar no longer turns. It is now open.■ Closing the valve1. Place the hex wrench on the valve bar and turn clockwise.2. Stop when the valve bar no longer turns. It is now closed.9.4. Cautions for handling the valve cover■ The valve cover is sealed whereindicated by the arrow.Take care not to damage it.■ After operating the valve, be sure to tighten the valve coverproperly.■ Check for refrigerant leakage after tightening the cap.9.5. Cautions for handling service portAfter the work, tighten the valve cover in place.Tightening torque: 11.5~13.9 N•mA Front connectionB Rear connectionC Side connectionD Bottom connection1 Gas line piping + copper gasket supplied with the unit (make sureto always use the copper gasket).2 Gas line piping supplied with the unit3 Gas piping (field supply)4 Cut to the appropriate length.5 Gas line piping supplied with the unit1 Putty or insulating material (fieldsupply)Make sure to keep the valve open during operation.1 Service port2 Stop valve3 Field piping connection4 Valve cover1 Spanner2 Torque wrench1341212Silicon sealing pad(Make sure there is no gap)Closing directionLiquid side Gas sideTightening torqueLiquid pipe 13.5~16.5 N•mGas pipe 22.5~27.5 N•m