Calculating Remote Condenser Installation Distances - Manitowoc Q460 Installation Use And Care Manual

Section 2
CALCULATING REMOTE CONDENSER
INSTALLATION DISTANCES
Line Set Length
The maximum length is 30 m.
The ice machine compressor must have the proper oil
return. The receiver is designed to hold a charge
sufficient to operate the ice machine in ambient
temperatures between -29°C and 49°C, with line set
lengths of up to 30 m.
Line Set Rise/Drop
The maximum rise is 11 m.
The maximum drop is 4.5 m.
If a line set has a rise followed by a drop, another
rise cannot be made. Likewise, if a line set has a
drop followed by a rise, another drop cannot be
made.
Calculated Line Set Distance
The maximum distance is 45 m.
Line set rises, drops, horizontal runs (or combinations of
these) in excess of the stated maximums will exceed
compressor start-up and design limits. This will cause
poor oil return to the compressor.
Step 1. Measured Rise 10.7 m Maximum
Step 2. Measured Drop 4.5 m Maximum
Step 3. Measured Horizontal Distance 30.5 m Maximum
Step 4. Total Calculated Distance 45 m
Maximum
H
Combination of a Rise and a
Horizontal Run
Part Number 000001759
! Caution
Maximum Line Set Distance Formula
R
SV1196
Combination of a Drop and a
Make the following calculations to make sure the line set
layout is within specifications.
1. Insert the measured rise into the formula below.
Multiply by 1.7 to get the calculated rise.
(Example: A condenser located 3 meters above the
ice machine has a calculated rise of 5 meters.
2. Insert the measured drop into the formula below.
Multiply by 6.6 to get the calculated drop.
(Example. A condenser located 3 meters below the
ice machine has a calculated drop of 20 meters.
3. Insert the measured horizontal distance into the
formula below. No calculation is necessary.
4. Add together the calculated rise, calculated drop,
and horizontal distance to get the total calculated
distance. If this total exceeds 45 m, move the
condenser to a new location and perform the
calculations again.
______ x 1.7
______ x 6.6
H
D
SV1195
Horizontal Run
Installation Instructions
= _______ Calculated Rise
= _______ Calculated Drop
_______ Horizontal Distance
_______ Total Calculated Distance
H
D
R
Combination of a Rise, a Drop
and a Horizontal Run
SV1194
2-11