Daikin VRV IV+ RXYTQ8U5YF Installer And User Manual page 67

RXYTQ
VRV IV+ heat pump for high ambient temperatures
4P561157-1B – 2021.11
Total piping length
▪ Between outdoor branch and outdoor unit (only in case >16 HP)
Actual piping length
Equivalent length
Maximum allowable height difference
H1 ≤50 m (40 m) (if outdoor is located below indoor units)
Conditional extension up till 90 m is possible without additional option
kit:
▪ In case the outdoor location is higher than indoor: extension is possible
up till 90 m and following 2 conditions must be fulfilled:
- Liquid piping size up (see table "Size up" in
refrigerant branch kit and indoor
- Dedicated setting on outdoor unit is required (see [2‑49] in
"19.2.8 Mode 2: Field
▪ In case the outdoor location is lower than indoor: extension is possible
up till 90 m and following 6 conditions must be fulfilled:
- 40~60 m: minimum connection ratio connected: 80%.
- 60~65 m: minimum connection ratio connected: 90%.
- 65~80 m: minimum connection ratio connected: 100%.
- 80~90 m: minimum connection ratio connected: 110%.
- Liquid piping size up (see table "Size up" in
refrigerant branch kit and indoor
- Dedicated setting on outdoor unit is required (see [2‑35] in
"19.2.8 Mode 2: Field
H2 ≤30 m
H3 ≤5 m
Maximum allowable length after branch
The pipe length from the first refrigerant branch kit to the indoor unit ≤40 m.
Example 1.1: unit 8: b+c+d+e+f+g+p≤40 m
Example 1.2: unit 6: b+h≤40 m, unit 8: i+k≤40 m
Example 1.3: unit 8: i≤40 m
However, extension is possible if all below conditions are met. In this case
limitation can be extended up to 90 m.
1000 m/500 m
Example 1.1
▪ a+b+c+d+e+f+g+h+i+j+k+l+m+n+p≤1000 m
Example 2.1
▪ a+b+c+d+e+f+g+h+i+j+k+l+m+n+p≤500 m
10 m
Example 3
▪ r, s, t≤10 m; u≤5 m
13 m
unit" [
4
settings" [ 107]).
unit" [
4
settings" [ 107]).
17 Piping installation
|
"E: Piping between
4
62]).
"E: Piping between
4
62]).
Installer and user reference guide
67