YORK INTERNATIONAL
14
Make certain that all channel tabs
and flanges which may have been dis-
torted in handling are straightened
before assembly.
C. Attach channels together to form rectangular pe-
rimeter as shown, leaving bolts loose.
D. Attach pipe chase channels as shown, leaving
bolts loose.
After the curb is set in place, be sure
proper consideration has been given
to the air duct openings through the
roof. Refer to section on Air Ducts.
The curb installation drawing (See Figure 5, Section A-
A) shows a gasket that is mounted between the curb
and the unit. This gasket is shipped with the unit “ship
loose parts”. Install the curb gasket before setting the
unit on the curb. The gasket forms an air seal between
the unit and the curb and also serves as a dampener,
preventing metal to metal contact between the unit and
curb. However, the gasket should not be used as a vi-
bration isolator where the prevention of noise and vi-
bration transmission into the building is critical.
The Curb should be insulated and roofed as required.
If equipment is not set in its perma-
nent position and is stored on the
ground or other unlevel area, proper
provisions must be taken for support-
ing and protecting the equipment See
section for both short and long-term
storage.
RIGGING
Refer to the submittal drawing supplied with the unit
for the CurbPak weights.
Unit segment weights are to be furnished on the job
submittal drawing provided with each unit. Due to the
variance in weight of each unit design, it is not possible
to list unit weights in this instruction. Unit weights are
listed with each unit submittal drawing. These draw-
ings must be referred to when selecting a crane for
rigging and figuring roof weight loads. Contact your
YORK Sales Office if you have any questions regard-
ing unit weights.
Proper rigging and handling of the equipment is manda-
tory during unloading and setting it into position to re-
tain warranty status.
Spreader bars must be used to prevent damage to the
unit casing.
Care must be taken to keep the unit in the upright posi-
tion during rigging and to prevent damage to the water-
tight seams in the unit casing. Avoid unnecessary jar-
ring or rough handling.
Proper spreader bars and hoisting straps should be used
when rigging. (See Figure 6) It is also mandatory that
an experienced and reliable rigger be selected to handle
unloading and final placement of the equipment. The
rigger must be advised that the unit contains internal
components and that it be handled in an upright posi-
tion. Care must be exercised to avoid twisting the equip-
ment structure.
When the equipment has been set in its final location,
the following must be done:
1. Check all caulked seams and air seal. Re-caulk if
and where caulking has been broken.
2. Check all door latches and readjust if necessary to
m
aintain a good tight seal.
FIELD ASSEMBLY OF SHIPPING SPLIT SECTION
(Prior To Setting Unit)
Follow the steps below in assembly of the shipping split
section. (See Figure 7)
1. Before pulling the sections together: A. Remove the
cross brace (shipping support) from each section.
B. Remove plastic shipping covers and their tagged
metal supports.
2. Apply grey
double-faced
tape to the flat surfaces
of one section.
FIG. 6 –
RIGGING
Installation
LD06331
