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After verifying system integrity, slowly open service valve to allow
refrigerant to flow through system. Unit is pre- -charged for 25' of
line set. Refer to Tables 4, 5 and 6 to adjust and verify system
charge accordingly.
Factory R410A
Model
Charge (oz)*
GZ024
80
GZ036
86
GZ048
88
GZ060
115
GZ072
127
CAPACITY MULTIPLIER
Example 1:
Model GZ036 with 45 ft. of equivalent length of 3//8" O.D. Liquid Line.
Total system charge = Factory charge + (45 ft --- 25 ft) X .60 oz/ft.
Total system charge = 86 oz + (20 ft x .60 oz/ft) = 98 oz.
Additional 12 oz of R410A refrigerant required.
Line Set Limitations: A 20 ft. Differential is the recommended limit without special considerations. For installations with 20 ---40 ft. Differential, it is recommended to add a
liquid line solenoid and, if the fan coil or furnace is above the GZ unit, add an inverted trap before line drop.
FV4CNF003
Unit
CNPV2417
FE4CNF003
GZ024
--- 11
--- 7
GZ036
---
---
GZ048
---
---
GZ060
---
---
GZ070
---
---
Example: Model GZ048 condensing section paired with FV4CNF005L air handler with 45ft of equivalent length of 3/8" O.D liquid Line.
Total system charge = factory charge + (charge adjustments for air handler)+ (45ft --- 25 ft) x .60 oz/ft.
Total system charge = 88 oz + (5 oz ) + (20ft x .60 oz/ft) = 105 oz.
Additional 17 oz of R410A refrigerant required.
Table 5 – Refrigerant Charge, Line Sizing & Capacity Multipliers
Refrigerant Charge, Line Sizing and Capacity Multiplier Chart
Refrigerant Line O.D. Size (Based on Equivalent Line Length)
25 Ft.
35 Ft.
LIQ.
SUC
LIQ.
3/8
3/4
3/8
3/8
3/4
3/8
3/8
7/8
3/8
3/8
1 ---1/8
3/8
3/8
1 ---1/8
3/8
1.00
.995
Table 6 – Charge Adjustments When Paired with Air Handlers
Charge Adjustments for GZ condensing section when paired with air handlers (oz)
FB4CMF024
CNPVP3617
--- 8
---
---
0
---
---
---
---
---
---
Table 4 – Liquid Line Charge per Linear Ft.
Liquid Line Charge per Linear Ft.
Liquid Line Size O.D.
1/4
5/16
3/8
1/2
5/8
45 Ft.
SUC
LIQ.
SUC
LIQ.
3/4
3/8
3/4
3/8
3/4
3/8
3/4
3/8
7/8
3/8
7/8
3/8
1 ---1/8
3/8
1 ---1/8
3/8
1 ---1/8
3/8
1 ---1/8
3/8
.990
Example 2:
Model GZ060 with 10 ft. of equivalent length of 3//8" O.D. Liquid Line.
Total system charge = Factory charge + (10 ft --- 25 ft) X .60 oz/ft.
Total system charge =115 oz --- (15 ft x .60 oz/ft) = 106 oz.
Reduce charge 9 oz of R410A refrigerant is required.
FV4CNF003
CNPVP4821
FE4CNF003
---
---
0
---
---
5
---
---
---
---
8
R410A oz per ft.
.25
.44
.60
1.15
1.95
50 Ft.
75 Ft.
SUC
LIQ.
SUC
3/4
3/8
7/8
7/8
3/8
7/8
7/8
3/8
7/8
1 ---1/8
3/8
1 ---1/8
1 ---1/8
3/8
1 ---1/8
.990
.980
FV4CNF005L
CNPVP6024
FE4CNF00FL
---
---
---
---
5
---
---
--- 13
---
--- 13
Suction/Discharge
Vapor Line
3/4
3/4
7/8
7/8
7/8
FV4CNF006
FE4CNF006
0
--- 6
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