Atlantic alfea extensa + - Page 21

gure 21 - Connecting the ared connections (Pipe diameters and permissible lengths)
Liquid valve
Hydraulic unit
Outdoor unit
Gas valve
Flare nut
Flare nut
Flare nut
Adapter R2
Depending on
the model
Flare nut
Adapter R1
Depending on the
model
"Liquid" refrigeration connection
Diameter D2
“Gas” refrigeration connection
Diameter D1
DL
mini
5m
DL
mini
5m
HP
HP
HP models extensa + 5, 6 extensa + 8 extensa + 10 extensa + 13,16
gas uid gas uid gas uid gas uid
Outdoor unit connections 1/2" 1/4" 5/8" 1/4" 5/8" 3/8" 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" (D1) 5/8" (D2) 3/8"
Minimum
length (L)
5 5 5 5
Maximum
length** (L)
30 30 30 20
Maxi. level
difference (D)
20 20 20 15
Male-female adapter
(reduction)
(R1)
1/2" - 5/8"
(R2)
1/4" - 3/8"
none
(R2)
1/4" - 3/8"
none none
Hydraulic unit connections 5/8" 3/8" 5/8" 3/8" 5/8" 3/8" 5/8" 3/8"
** : Taking into account the possible additional load of refrigeration uid R410A (see "Additional charge", page 27).
Installation and operation manual "1734 - EN" - 21 -
Heat pump air/water split 1 service alféa extensa +