Atlantic alfea extensa duo+ - Page 18

 gure 18 - Connecting the  ared connections (Pipe diameters and permissible lengths)
DL
HP
HP
“Gas” refrigeration connection
Diameter D1
"Liquid" refrigeration connection
Diameter D2
Flare nut
Flare nut
Flare
nut
Flare
nut
Liquid
valve
Gas
valve
Hydraulic unit
Outdoor unit
Adapter R2
(according to model)
Adapter R1
(according to model)
HP model extensa duo + 5 & 6 extensa duo + 8 extensa duo + 10
gas  uid gas  uid gas  uid
Outdoor unit connections 1/2" 1/4" 5/8" 1/4" 5/8" 3/8"
Refrigeration
connections
Diameter (D1) 1/2" (D2) 1/4" (D1) 5/8" (D2) 1/4" (D1) 5/8" (D2) 3/8"
Minimum length (L) 5 5 5
Maximum length* (L) 15 15 15
Maximum length** (L) 20 20 20
Maxi. level difference (D) 15 15 15
Male-female adapter (reduction)
(R1)
1/2" - 5/8"
(R2)
1/4" - 3/8"
none
(R2)
1/4" - 3/8"
none
Hydraulic unit connections 5/8" 3/8" 5/8" 3/8" 5/8" 3/8"
* : without additional charge of R410A.
** : taking into account the possible additional load of refrigeration  uid R410A (see "Additional charge", page 21).
Installation and operating manual "1578 - EN"
Heat Pump alféa extensa duo +
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