Technical information

12/01/02
SYSTEM CHARGE - R-404A
The ice machine head and URC condenser are shipped
with enough refrigerant charge for up to 66 feet of line set
length. The maximum line set length is 100 equivalent feet
from the head to the condenser.
For applications longer than 66 ft. up to the maximum 100 ft.
Length, additional refrigerant must be added. For units uti-
lizing 1/4" L.L. and 3/8" D.L., the line size should be in-
creased to 3/8"L.L. and 1/2"D.L. for the entire length of the
run. Add 16.5 ounces plus 0.4 oz. per foot over 66 feet. For
units utilizing 3/8"L.L., add 0,4 oz. per foot over 66 feet.
NOTE:
(1) Recommended line sizes are same as listed in
the line set application chart.
(2) Older models utilize R-502 refrigerant or R-22
refrigerant. Always check the unit nameplate for
the correct refrigerant type.
Do not connect components using different type
refrigerants!
(3) If refrigerant is added due to extended line set
length, mark the correct total charge on the unit
nameplate for future reference.
(4) When routing and installing remote lines, always
use standard refrigerant piping practices.
(5) Hoshizaki recommends eliminating any excess
loops in a pre-charged line set application before
making the unit connections. This will eliminate oil
traps and possible crimps in the excess tubing.
(6) A service loop should be included behind the unit
as shown in the illustration on page 13 to allow
the unit to be moved away from the wall if
needed.
CRITICAL CHARGE AMOUNT
The total system charge is critical for proper operation
according to Hoshizaki specification. Always weigh in the
proper charge per the following charge chart. (Remote
units show standard charge good for up to 66 feet.) Unit
charge information is also found on the unit Name Plate.
FOR FACTORY SUPPORT
CONTACT HOSHIZAKI TECHNICAL SUPPORT AT:
1 -800-233-1940
E-Mail: [e-mail]
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12/20/03
2/20/03