cadillackid
05-11-2009, 04:21 PM
so I go out on site and find there is trouble in 2 of the customer's mini splits... one is an amcoraire and one is a Grunaire similar to the 3 i have at home....
the amcor was easy.. thank god since the company is gone.. was electrical supply problem...
the grunaire brought me to my knees... its low on charge... I find a leak in a flare at the outdoor unit.. recover it, and i recovered over a pound less than the label on the machine...
customer ordered the unit as a kit with included 25 foot lineset... similar to my units...
so I read the label on the machine, pull out the PDF from grunaire and realize there is a discrepency...
the grunaire book says anything over 16.5 feet requires additional charge per the included formula...
this unit not critical so I leave site and start researching...
so now im at a loss....
the wholesaler contacts grunaire and they say that the units are built specially by chigo with a 25 foot lineset charge in the outdoor unit..
Chigo the manufacturer from china gives me no real answers but says "try charging by the Book"....
the book from grunaire says charge 0.7 oz additional R-410A for each foot of pipe over 16 feet...
the grunaire people claim the units are charged for 25 feet of line....
these are R-410A inverter units..
so whats my best route to go here? 410A is sensitive.. its near impossible to charge an inverter with gauges... is it better to be under or overcharged...
it would seem to me if the unit were undercharged it would tend to work Ok on cooling but not as well on heating... and if overcharged it would tend to work better on heating but lack on cooling...
mainly because of the amount of liquid line in use wit hthe expansion device in the outdoor unit....
what do you guys think??
do any of you have chigo built units that are advertised and sold for 5 meters(16.5 ft) of Line versus 7.5(25 ft)? that you can read the label of charge and then I can compare to the labels on my and my cusatomer's machines?
-Christopher
the amcor was easy.. thank god since the company is gone.. was electrical supply problem...
the grunaire brought me to my knees... its low on charge... I find a leak in a flare at the outdoor unit.. recover it, and i recovered over a pound less than the label on the machine...
customer ordered the unit as a kit with included 25 foot lineset... similar to my units...
so I read the label on the machine, pull out the PDF from grunaire and realize there is a discrepency...
the grunaire book says anything over 16.5 feet requires additional charge per the included formula...
this unit not critical so I leave site and start researching...
so now im at a loss....
the wholesaler contacts grunaire and they say that the units are built specially by chigo with a 25 foot lineset charge in the outdoor unit..
Chigo the manufacturer from china gives me no real answers but says "try charging by the Book"....
the book from grunaire says charge 0.7 oz additional R-410A for each foot of pipe over 16 feet...
the grunaire people claim the units are charged for 25 feet of line....
these are R-410A inverter units..
so whats my best route to go here? 410A is sensitive.. its near impossible to charge an inverter with gauges... is it better to be under or overcharged...
it would seem to me if the unit were undercharged it would tend to work Ok on cooling but not as well on heating... and if overcharged it would tend to work better on heating but lack on cooling...
mainly because of the amount of liquid line in use wit hthe expansion device in the outdoor unit....
what do you guys think??
do any of you have chigo built units that are advertised and sold for 5 meters(16.5 ft) of Line versus 7.5(25 ft)? that you can read the label of charge and then I can compare to the labels on my and my cusatomer's machines?
-Christopher