Due to our policy of continuous product innovation, some specifications may change without notification.
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36
CHARGING REFRIGERANT
DANGER
•
Refrigerant gas is heavier than air and replaces oxygen. A massive leak will result in oxygen depletion, especially in basements,
and an asphyxiation hazard will result in serious injury or death.
•
If refrigerant gas leaks during installation, ventilate the area immediately. Refrigerant gas will result in producing toxic gas if it
comes into contact with fire. Exposure to this gas will result in severe injury or death.
WARNING
•
Refrigerant cannot be charged until field wiring has been completed.
•
Refrigerant may only be charged after performing the leak test and the vacuum drying.
•
When charging a system, care shall be taken that its maximum permissible charge is never exceeded, in view of the danger of
liquid hammer.
•
Charging with an unsuitable substance may cause explosions and accidents, so always ensure that the appropriate refrigerant
R410A is charged.
•
Refrigerant containers shall be opened slowly.
•
Always use protective gloves and protect your eyes when charging refrigerant.
•
When the refrigerant system is to be opened, refrigerant must be treated according to the applicable legislation.
•
To avoid compressor breakdown.
Do not charge the refrigerant more than the specified amount.
Refrigerant Charge Worksheet
The calculation of the additional charge should take into account the length of pipe and CF (Correction Factor) value
of DOAS unit.
System Tag or ID
Job Name : _____________________________________________
Project Manager : ________________________________________
Date : ______________
Line #
Description
Chassis
I.D
Size
Quantity
CF(Ref.)
1
Total(lbs.)
1
Linear feet of 1/4" liquid line tubing
2
-
-
0.015
2
Linear feet of 3/8" liquid line tubing
2
-
-
0.041
3
Linear feet of 1/2" liquid line tubing
2
-
-
0.079
4
Linear feet of 5/8" liquid line tubing
2
-
-
0.116
5
Linear feet of 3/4" liquid line tubing
2
-
-
0.179
6
Linear feet of 7/8" liquid line tubing
2
-
-
0.238
7
Linear feet of 1" liquid line tubing
2
-
-
0.323
8
Split Rooftop DOAS(with Energy Recovery Wheel)
DB
127k(200k)
11.35
9
ADDTIOINAL Refrigerant Charge Required
(Sum of lines 1-8)
10
Outdoor Unit Factory Refrigerant Charge
10A
ARUM072*TE5
72k
14.3
10B
ARUM096*TE5
96k
23.2
10C
ARUM121*TE5
121k
23.2
10D
ARUM144*TE5
144k
26.5
10E
ARUM168*TE5
168k
26.5
10F
ARUM192*TE5
192k
30.9
10G
ARUM216*TE5
216k
37.5
10H
ARUM241*TE5
241k
37.5
11
Total ODU FACTORY Refrigerant Charge
(sum of factory refrigerant charges for all ODUs in the system, line 10A
– 10H)
12
TOTAL SYSTEM CHARGE
Sum of Additional Refrigerant Charge Required
(line 9)
and Total ODU Factory Refrigerant Charge
(line 11)
