Lennox G43UF SERIES

• Warm weather best
Can ct\"rga in colder weather
CHARGE METHOD? Determlrie by;
• Metertng devi~ Iype
• outdoor ambient temperature
REQUIREMENTS;
Sulllelenl heal load In IlnJeture
Indoor temperature betwllen 7o-80"F
(21-28"C)
.' Manifold gouge set connected to un"
•
Thermometers:
• 10 mea£ul'9 outdoor amblenl
tllmpataluJe
- 10 mesuure liquid line tempeClllure
- to measure luetlon line
temperalure
Figure 14, Determining ChargG Method
WEIGH IN (RFC AND TXV)
CALCULATING SYSTEM CHARGE FOR OUTDOOR UNIT VOID OF CHARGE
If the system is void of rafrigerant, first, locate and repair any leaks and then weigh in the refrigerant charge into the
unit. To calculate the total refrigerant charge:
Adjuslamounl. for v<lrilllion
Amountspeclfted on In line uellength 1I!1$d on
nameplate (ina £llt lel'lglh table below.
Tolal charge
LENNOX
DALl..A.!o, TE~
'NN TSI\DJllH4Nnc;
l~ilo.I pp
N
OCNT,.,.. ftP'f>I""
l;II:U:Uil"r:IaUIli1:
,..ch"'t~..,.oc
~
... -
.\AI 'on:
'"
""-
!...r~llil~Jl4'1'IIl2i
~"""YOL":"
,~
II ..
""41'
IIW( ,t'
_.-
..""''''OICA
...
...
\
... ...
. ..
OJ
".
...
., ,.
-~-
,as
MlI'YII-.MM
--
,.-~*"-?
"
........ -
11I1.~I'lRlllm
c~~
~
...
III
!
"", ....
UII
,J
IJf/
=
Reftlgarant Charge per Line Set Length
Liquid Line
Ounces per 5 feel (9 per 1.5 m)
Set Diameter
adjust from 15 feet (4.6 m) line set'
3/8" (9.5 mm)
3 ounce per 5' (85 9 per 1.5 m)
'If IInelenglh Is grealarlhan 15 n. (4.6 ml, add "'iii amount. II
IInalonglh
is le99 than 15 II. (4.6 m), subtract this amount.
NO TE -Insula/eliquid I/nll whs'! it is rouled through areas where the suftounrJ/ng ambient temperature
could become higher
Ihan /hll/flmpllraturll of fheliquid I;ne orwhen pressure drop is equal/o or grellter
Ih8n
20 pslg.
NO TE - The abovll nllmflpla/els for 11/llsll'8"on pUrpOSllS ooly Go to 1/1;/1.181 namllpla/e on ou/(100r unit for
ch81f1e I'!formetion.
Figure 15. Using HFC·410A Weigh In Method
Page 23
1~ACX SERIES
l£ 'd
II
"·"ISI5I.. ....