figure 18 - Connecting the flared connections (Pipe diameters and permissible lengths)
D
L
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
fluid
gas
fluid
gas
fluid
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)
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"
**
: taking into account the possible additional load of refrigeration fluid R410A (see
"Additional charge", page 22
).
Installation and operating manual "1585 - EN"
Air to Water Heat Pump (Split integrated DHW type)
- 18 -
Comfort 5 & 6
Comfort 8
Comfort 10
