To Select Refrigerant Branch Kits - Daikin CO2 Conveni-pack LRYEN10A7Y1 Installer And User Reference Manual

Piping size between branching areas or between first and second branch
Piping size from branch to indoor unit
Stop valve size

16.1.5 To select refrigerant branch kits

LRYEN10A7Y1+LRNUN5A7Y1
CO₂ Conveni-Pack outdoor unit
4P605460-1 – 2020.08
(a)
For refrigeration piping (A, B, a) and for air conditioner piping (A2, a2)
(b)
For low load restrictions, see
Indoor unit capacity index
(kW)
x≤10.0
10.0<x
x≤6.5
6.5<x≤14.0
14.0<x
—
—
(a)
Piping between branching areas (C, D, c, d)
(b)
Piping from first branch to second branch (B2, b2)
Gas pipe
Same size as C, D, c, d.
If piping sizes of the indoor units are different, connect a reducer close to the
indoor unit to align piping sizes.
Ø12.7×t0.85 (K65)
(a)
Piping from branch to indoor unit (E, F, G, J, e, f, g, j)
(b)
Piping from branch to indoor unit (C2, D2, E2; c2; d2; e2)
(a)
Refrigeration side
(a)
Air conditioner side
(a)
Reducers (field supply) may be required to connect the piping.
Always use K65 T-joints with a suitable design pressure for refrigerant branching.
"14.5.2 Constraints for
Piping outer diameter size (mm)
Refrigeration side: liquid pipe
Ø9.5×t0.65 (K65)
Ø12.7×t0.85 (K65)
Refrigeration side: gas pipe
Ø9.5×t0.65 (K65)
Ø12.7×t0.85 (K65)
Ø15.9×t1.05 (K65)
Air conditioner side: liquid pipe
Ø12.7×t0.85 (K65)
Air conditioner side: gas pipe
Ø15.9×t1.05 (K65)
Piping outer diameter size (mm)
Refrigeration side
Air conditioner side
Liquid side
Ø15.9
Ø15.9
16 Piping installation
|
4
refrigeration" [ 49].
(a)
(a)
(b)
(b)
Liquid pipe
(a)
(b)
Ø9.5×t0.65 (K65)
Gas side
Ø19.1
Ø15.9
Installer and user reference guide
69