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Piping installation
Installer and user reference guide
77
RYYQ+RYMQ+RXYQ
VRV IV+ heat pump
4P546228-1C – 2021.11
Actual piping length
165 m
/135 m
Example 1.1
▪
unit 8: a+b+c+d+e+f+g+p≤165 m
Example 1.2
▪
unit 6: a+b+h≤165 m
▪
unit 8: a+i+k≤165 m
Example 1.3
▪
unit 8: a+i≤165 m
Example 2.1
▪
unit 8: a+b+c+d+e+f+g+p≤135 m
Equivalent length
190 m
/160 m
Total piping length
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
▪
Between outdoor branch and outdoor unit (only in case of a multi outdoor
installation)
Actual piping length
10 m
Example 3
▪
r, s, t≤10 m; u≤5 m
Equivalent length
13 m
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 unit"
71]).
-
Dedicated setting on outdoor unit is required (see [2‑49] in
"19.2.8 Mode 2: Field settings"
129]).
▪
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 unit"
71]).
-
Dedicated setting on outdoor unit is required (see [2‑35] in
"19.2.8 Mode 2: Field settings"
129]).
Summary of Contents for RYYQ8U7Y1B
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