Panasonic WH-MHF12G6E5 Service Manual

Also see for WH-MHF12G6E5: Planning and installation manual Planning and installation manual Service manual Operating instructions

7614.4 How To Adjust Water Flow RateBefore adjust the water flow rate, make sure that the total water volume in the installation is 50 litres minimum forheating side. The default setting is SPEED 4 (Only for WH-MHF09G3E5) and SPEED 5 for WH-MHF12G6E5. Pleaseensure the minimum flow rate is not less than 13 l/min and not more than 50 l/min.The available external static pressure (kPa) in function of the water flow rate (l/min) is shown in the P-Q graph.Depend on the hydraulic system pressure loss and type, the water flow rate can be adjusted by remote control.1 When the Air-to-Water Heatpump is in stop operation, press SERVICE button for 5 seconds.2 Press / button to select menu S02 (PUMP SPEED ADJUST MODE) and press SET button to confirm themenu.3 Press SELECT button then press / button to change pump speed and press SET button to confirm thepump speed.4 Press OFF/ON button to exit PUMP SPEED ADJUST MODE.During PUMP SPEED ADJUST MODE, we can select AIR PURGE function by pressing FORCE button.In AIR PURGE function, the pump will operate ON and OFF for 10 minutes to purge the air in the hydraulic system.Press again the FORCE button to exit AIR PURGE function. PUMP SPEED ADJUST MODE will stop operation.14.5 Expansion Vessel Pre Pressure Checking Expansion Vessel with 10 L air capacity and initial pressure of 1 bar is installed in this Mono bloc unit. Total amount of water in system should be below 200 L.(Note: This amount of water is not include the tank unit volume) If total amount of water is more than 200L, please install additional expansion vessel (field supply). Please keep the installation height difference of system water circuit within 10 m.(Inner volume of same Mono bloc unit is about 5 L)14.6 Dry Concrete [SERVICE MODE: 03] If Dry Concrete has been set, Dry Concrete status can be activated and monitored by following procedure.1 Press SERVICE button for 5 seconds.2 Press ▲ to enter menu Sr: 03 and press SET button to activate Dry Concrete function.3 Press OFF/ON button to quit setting.1101009080706050403020100 0 10 20 30 40 50 60131234567WATER FLOW RATE (L/min)EXTERNAL STATIC PRESSURE (kPa)NOT APPLICABLE RANGENOT APPLICABLE RANGE

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