JOHNSON CONTROLS
34
FORM 160.84-N1
ISSUE DATE: 11/22/2016
SECTION 3 - INSTALLATION
Install Optional Spring Isolators
Bolt Isolators To The Unit
If ordered, spring type isolator assemblies are fur-
nished with the unit. The four assemblies are identical
and can be placed at any of the four corners of the unit.
While the unit is still suspended by the rigging, the iso-
lators should be bolted to the unit by inserting the cap
screw(s) through the hole(s) in the mounting bracket
into the tapped hole in the top of the isolator leveling
bolt(s). Then the unit can be lowered onto the floor.
Level The Unit
The longitudinal alignment of the unit should be
checked by placing a level on the top center of the
evaporator shell under the compressor/motor assem-
bly. Transverse alignment should be checked by plac-
ing a level on top of the shell end sheets.
Rotate the leveling bolts one turn at a time, in sequence,
until the unit end sheets are clear of the floor by the
dimension shown in Figure 23 on page 34 and the
unit is level. If the leveling bolts are not long enough to
level unit due to an uneven or sloping floor or founda-
tion, steel shims (grouted, if necessary) must be added
beneath the isolator assemblies as necessary.
If the springs are over-compressed at any corner, the
levelling bolt has been extended too far compared to
at least one of the other corners on the same end sheet
or same side of the shell and the isolator is bearing an
unequal amount of the chiller load. Correct by backing
off the bolts on the overloaded isolator and adjusting
opposite isolators as required.
ALL DIMENSIONS ARE IN INCHES (mm)
FIGURE 23 - SPRING ISOLATORS
SHELL
4-SPRING ISOLATORS
END
SHEET
CAP
SCREW
ADJUSTING
BOLT
1”
(25)
5 1/2”
(140)
1 3/8”
(35)
6”
(152)
6”
(152)
SHELL
6-SPRING ISOLATORS
END
SHEET
CAP
SCREW
ADJUSTING
BOLT
5 1/2"
(140)
LD19573 LD19579
SHELL
4-SPRING ISOLATORS
END
SHEET
CAP
SCREW
ADJUSTING
BOLT
7”
(178)
7”
(178)
1”
(25)
5 1/2”
(140)
1 3/8”
(35)
LD19572
UNIT WEIGHT
10,000 to 19,563 (4,536 to 8,873 Kgs)
UNIT WEIGHT
19,564 Lbs UP TO 24, 457 Lbs (8874 Kgs UP TO 11093 Kgs)
UNIT WEIGHT
35,010 Lbs UP TO 58,349Lbs (15881 Kgs UP TO 26467 Kgs)
UNIT WEIGHT
30,827 Lbs UP TO 35,009 Lbs (13,983 Kgs UP TO 15,880 Kgs)
SHELL
4-SPRING ISOLATORS
END
SHEET
CAP
SCREW
ADJUSTING
BOLT
1”
(25)
5 1/2”
(140)
1 3/8”
(35)
6”
(152)
6”
(152)
LD19573