1. Check if the heater is filled with water and that the primary system is ready. 2. Set the controls on the primary circuit t of the boiler to the required sanitary water temperature. 3. Open boiler supply and return valves (if installed) 3.3 Shutting down For longer periods 1. Close the cold-water tap. 2. If there is any risk of frost damage, drain the tank completely. 3.4 Maintenance The pressure relieve valve must be tested regularly by opening test lever for some seconds. The water must run

Models with fixed internal heat exchanger are also available. 2.3 Commissioning 2.3.1 Filling the tank 1. Check if any installed drain valve is closed. 2. Open the cold-water supply valve to the heater 3. Open all hot-water outlets in order to bleed all air from the system. The heater is filled when cold water runs out of all outlets. 4. Close all hot water taps 2.3.2 Start up Check if the heater is filled with water and that the primary system is ready. Open water supply and return valves. 2.4

= 55°C l 310 310 - 120 min .T = 55 °C l 337 337 - Continuous .T = 55°C l/h 54 54 - Heating-up time .T= 55°C min 398 398 - Shipping data Empty weight kg 105 105 - Weight including packaging kg 115 115 - Maximum weight kg 390 390 - Width packaging mm 765 765 - Height packaging mm 1945 1945 - Depth packaging mm 765 765 - AH 290 AHD 290 AHDS 290 AH(D)(DS) Technical specifications AH(D)(DS) Installation diagrams A Cold water B Hot water C Return circulation 1 Pressure reducing valve 4 Stop valve 5 No

Functioning parameters Minimum air temperature °C 8 0 - Maximum air temperature °C 35 35 - Air flow per hour m3 280 280 - Max hot water temperature heatpump °C 55 55 - Max hot water temperature heatpump + electric element °C 65 65 - electrical data Main electric connection 230(-15%/+10%)/50(+/- 1Hz) Motor AC AC - Power consumption W 560 560 - Electric connection A 13 13 - COP -3,2 3,5 - Power consumption electric element kW 1,5 1,5 - Fan speed r.p.m. 2500 2500 - General/Cooling info Heat capaci

2500 2500 - General/Cooling info Heat capacity kW 1,96 1,96 - Refrigerant R 134 a R 134 a - Refrigerant filling Kg 0,9 0,9 - Maximum working pressure tank bar 8 8 - Sound level (1 meter in front of the unit) dB 56 56 - Anodes -1 1 - Draw-off capacity Storage capacity l 285 285 - Maximum temperature setting heatpump °C 55 55 - Maximum temperature setting heatpump + electric element °C 65 65 - tcold = 10.C / tset = 55.C (Heatpump function only) 30 min .T = 28 °C l 400 400 - 60 min .T = 28 °C l 430

11 FOR YFOR YFOR YFOR YFOR YOUR INFORMAOUR INFORMAOUR INFORMAOUR INFORMAOUR INFORMATIONTIONTIONTIONTION FOR YFOR YFOR YFOR YFOR YOUR INFORMAOUR INFORMAOUR INFORMAOUR INFORMAOUR INFORMATIONTIONTIONTIONTION THERMALEXPANSION Water supply systems may, because of such events as high line pressure, frequent cut-offs, the effects of water hammer among others, have installed devices such as pressure reducing valves, check valves, back flow preventers, etc. to control these types of problems. When these