INSTALLATION SCHEMATICS Detailed hydraulics and electrical diagrams included in the installation manual. A- ALFEA HYBRID FUEL OIL A.I. 1 HEATING ZONE 1 Outdoor unit with floor stand* 2 Refrigerant connections* 3 I ndoor unit with low NOx burner and Domestic Hot Water (DHW) tank 4 Thermostat* 5 Outdoor sensor *Options, see pages 109-110. B - ALFEA HYBRID FUEL OIL A.I. 1 HEATING ZONE - UNDERFLOOR 1 Outdoor unit with floor stand* 2 Refrigerant connections* 3 Indoor unit with low NOx burner and DHW tank 4 Thermostat* 5 Outdoor sensor 6 2-zone kit*/low-temperature underfloor heating (LTUH)* *Options, see pages 109-110. C - ALFEA HYBRID FUEL OIL A.I. 2 HEATING ZONES 1 Outdoor unit with floor stand* 2 Refrigerant connections* 3 Indoor unit with low NOx burner and DHW tank 4 Zone 1 thermostat* 5 Zone 2 thermostat* 6 2-zone kit*/low-temperature underfloor heating (LTUH)* 7 Outdoor sensor *Options, see pages 109-110. ALFEA HYBRID FUEL OIL A.I. 2 HEATING ZONES - UNDERFLOOR 1 Outdoor unit with floor stands* 2 Refrigerant connections* 3 Indoor unit with low NOx burner and DHW tank 4 Zone 1 thermostat* 5 Zone 2 thermostat* 6 2-zone kit*/low-temperature underfloor heating (LTUH)* 7 Outdoor sensor *Options, see pages 109-110. VDR CAR CAR CC A B AB SR VE C VD SDp Pg Pg Pg SSe Br SE Ssa GS MT CAR D R OU SA 5 1 2 3 4 A B AB SR VE C VD SDp Pg Pg Pg SSe Br SE Ssa CAR CAR CC VDR GS MT CAR D R OU UH SA SA Rdyn* OU SA* M SP VM CCM SDpM 2cK CAR Circuit 2 Circuit 1 7 3 6 1 2 4 5 CAR CAR CC SR VE C VD SDp Pg Pg Pg SSe Br SE Ssa GS MT CAR D UH M SP VM CCM SDpM 2cK CAR Circuit 2 SA UH SP CAR Circuit 1 VTh SA 1 7 3 2 4 5 6 CAR CAR CC SR VE C VD SDp Pg Pg Pg SSe Br SE Ssa GS MT CAR D UH M SP VM CCM SDpM 2cK CAR Circuit 1 SA 1 2 3 4 5 6 108 Hybrid heat pumps
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