Gree GWHD14NK3BO - Calculation of the Additional Refrigerant Charging; Calculation of the Additional Refrigerant Charge; Indoor Unit; Liquid Refrigerant Pipe

Installation Manual
39
4) When the compressor is not running, charge the R410A refrigerant into the refrigerant pipe from the liquid valve of the
outdoor unit (do not do it from the gas valve).
a.
Calculation of the Additional Refrigerant Charging
5HIULJHUDQW&KDUJHLQWKH2XWGRRU8QLWEHIRUH6KLSPHQW
7DEOH
Model GWHD(36)NK3AO GWHD(42NK3AO
Refrigerant Charge (kg) 3.6 4.8
Notes
˖
ķ
7KHUHIULJHUDQWFKDUJHPHQWLRQHGLQWKHWDEOHDERYHLVQRWLQFOXGHGWKRVHFKDUJHGDGGLWLRQDOO\LQWKHLQGRRUXQLWDQGWKH
refrigerant pipe.
ĸ
The amount of the additional refrigerant charge is dependent on the diameter and length of the liquid refrigerant pipe
ZKLFKLVGHFLGHGE\WKHDFWXDO\LHOGLQVWDOODWLRQUHTXLUHPHQW
Ĺ
Record the additional refrigerant charge for future maintenance.
2) Calculation of the Additional Refrigerant Charge
,IWKHWRWDOUHIULJHUDQWSLSHOHQJWKOLTXLGSLSHLVVPDOOHUWKDQWKDWOLVWHGLQWKHWDEOHEHORZQRDGGLWLRQDOUHIULJHUDQWZLOOEH
charged.
7DEOH
Model 7RWDO/LTXLG3LSH/HQJWKDEFGH
GWHD(36)NK3AO P
GWHD(42)NK3AO P
$GGLWLRQDO5HIULJHUDQW&KDUJH ([WUD/LTXLG3LSH/HQJWKîJPOLTXLGSLSH
1RWHLIWKHWRWDOUHIULJHUDQWSLSHOHQJWKLVODUJHUWKDQWKDWOLVWHGLQWKHWDEOHDERYHWKHDGGLWLRQDOUHIULJHUDQWIRUWKHH[WUD
OHQJWKRIWKHSLSHQHHGVWREHFKDUJHGDVSHUJP
3) Example : GWHD (42) NK3AO
Fig.9
7DEOH,QGRRU8QLW
Serial No. Model
Indoor Unit
Ļ
Ducted Type GFH(09)EA-K3DNA1A/I
Indoor Unit
ĺ
Ducted Type GFH(09)EA-K3DNA1A/I
Indoor Unit
Ĺ
Ducted Type GFH(09)EA-K3DNA1A/I
Indoor Unit
ĸ
Ducted Type GFH(09)EA-K3DNA1A/I
Indoor Unit

Ducted Type GFH(18)EA-K3DNA1A/I
7DEOH/LTXLG5HIULJHUDQW3LSH
Serial No. e d c E a
Diameter ĭ ĭ ĭ ĭ ĭ
Length 20m 20m 15m 5m 5m
7KHWRWDOOHQJWKRIHDFKOLTXLGUHIULJHUDQWSLSHLVHGFED  P7KXVWKHPLQLPXPDGGLWLRQDO
refrigerant charge=(65-50)×0.022=0.33kg (Note: no additional refrigerant is needed for the liquid pipe within 50m).
a
b
c
d
e