Rheem ECONET RP2024BJVCA, Installation Instructions Manual

Page: 12 / 76

12
Tubing
4.0 INSTALLATION
4.4.2.5 Oil Level Adjustments for
Long Line Set Applications
Additional oil will need to be added if refrigerant is
added during installation. Below is the equation for
the oil level adjustment and the compressor name
plate oil charge for the different outdoor units.
Oil to be Added = [(Charge Adju OD
Unit Name Plate Refrigerant Charge (oz.)) ×
(0.022) – [(0.10) × (Compressor Name Plate Oil
Charge (oz.))]
Example:
An application requires 125ft of line set
with a liquid line diameter of 3/8”, Charge Adjust-
ment = 66 oz., Name Plate Charge = 212 oz.,
Name Plate Oil Charge = 40 oz., Oil to be Added =
((66 oz. + 212 oz.) × .022) – (.10 × 40 oz.) = 2 oz.
4.4.2.6 Capacity Losses
Long line lengths can result in a reduction in
capacity due to vapor line pressure drop and heat
gain or loss. Refer to Table 2 for capacity loss
multipliers for various vapor line diameters and
equipment line lengths. This table does not ac-
count for any capacity loss due to heat gain or loss
from the environment. It is extremely important
not to oversize the vapor line to minimize capacity
loss at the expense of proper oil return. If the table
shows an “NR” for a particular vapor line diameter
and length, or, if a vapor line diameter is not listed,
oil return will not be adequate.
2'0RGHO
&RPSUHVVRU
1DPHSODWH2LO
&KDUJHR]
3
=39(=(
3
=39(=(
3
3
=39&((
ƋƵŝǀĂůĞŶƚ>ĞŶŐƚŚĨŽƌ&ŝƚƚŝŶŐƐ͗Ĩƚ΀ŵ΁
>ŝŶĞ^ŝnjĞ
ŝŶ΀ŵŵ΁
ϵϬΣ^ŚŽƌƚ
ZĂĚŝƵƐ
ůďŽǁ
ϵϬΣ>ŽŶŐ
ZĂĚŝƵƐ
ůďŽǁ
ϰϱΣ
ůďŽǁ
^ŽůĞŶŽŝĚ
sĂůǀĞ
ŚĞĐŬ
sĂůǀĞ
^ŝŐŚƚ
'ůĂƐƐ
&ŝůƚĞƌ
ƌLJĞƌ
ϯͬϴ΀ϵ͘ϱϯ΁ ϭ͘ϯ΀Ϭ͘ϰϬ΁ Ϭ͘ϴ΀Ϭ͘Ϯϰ΁ Ϭ͘ϯ΀Ϭ͘Ϭϵ΁ ϲ΀ϭ͘ϴϯ΁ ϰ΀ϭ͘ϮϮ΁ Ϭ͘ϰ΀Ϭ͘ϭϮ΁ ϲ΀ϭ͘ϴϯ΁
ϭͬϮ΀ϭϮ͘ϳϭ΁ ϭ͘ϰ΀Ϭ͘ϰϯ΁ Ϭ͘ϵ΀Ϭ͘Ϯϳ΁ Ϭ͘ϰ΀Ϭ͘ϭϮ΁ ϵ΀Ϯ͘ϳϰ΁ ϱ΀ϭ͘ϱϮ΁ Ϭ͘ϲ΀Ϭ͘ϭϴ΁ ϲ΀ϭ͘ϴϯ΁
ϱͬϴ΀ϭϱ͘ϴϴ΁ ϭ͘ϱ΀Ϭ͘ϰϲ΁ ϭ΀Ϭ͘ϯϬ΁ Ϭ͘ϱ΀Ϭ͘ϭϱ΁ ϭϮ΀ϯ͘ϲϲ΁ ϲ΀ϭ͘ϴϯ΁ Ϭ͘ϴ΀Ϭ͘Ϯϰ΁ ϲ΀ϭ͘ϴϯ΁
ϯͬϰ΀ϭϵ͘Ϭϱ΁ ϭ͘ϵ΀Ϭ͘ϱϴ΁ ϭ͘ϯ΀Ϭ͘ϰϬ΁ Ϭ͘ϲ΀Ϭ͘ϭϴ΁ ϭϰ΀ϰ͘Ϯϳ΁ ϳ΀Ϯ͘ϭϯ΁ Ϭ͘ϵ΀Ϭ͘Ϯϳ΁ ϲ΀ϭ͘ϴϯ΁
ϳͬϴ΀ϮϮ͘Ϯϯ΁ Ϯ͘ϯ΀Ϭ͘ϳϬ΁ ϭ͘ϱ΀Ϭ͘ϰϲ΁ Ϭ͘ϳ΀Ϭ͘Ϯϭ΁ ϭϱ΀ϰ͘ϱϳ΁ ϴ΀Ϯ͘ϰϰ΁ ϭ΀Ϭ͘ϯϬ΁ ϲ΀ϭ͘ϴϯ΁
ϭͲϭͬϴ΀Ϯϴ͘ϱϴ΁ Ϯ͘ϳ΀Ϭ͘ϴϮ΁ ϭ͘ϴ΀Ϭ͘ϱϱ΁ Ϭ͘ϵ΀Ϭ͘Ϯϳ΁ ϮϮ΀ϲ͘ϳϭ΁ ϭϮ΀ϯ͘ϲϲ΁ ϭ͘ϱ΀Ϭ͘ϰϲ΁ ϲ΀ϭ͘ϴϯ΁
Table 1
Refrigerant tubing is measured in terms of actual
length and equivalent length. Actual length is used
for refrigerant charge applications. Equivalent
length takes into account pressure losses from
tubing length, fittings, vertical separation, acces-
sories, and filter dryers. The table below references
different commonly used equivalent lengths.
4.4.3 Line Set Length and Fitting Losses