Dynamic | 53DS---900--- --- ---118 | Installation Instructions

Installation Instructions
53DS---900--- --- ---075
53DS---900--- --- ---076
Duct---Free Systems
Accessory Stacking Kit
Cooling Only Units (Size 018---060)
Installation Instructions
2 To 5 Nominal Tons
NOTE: Read and become familiar with these instructions before
beginning installation.
SAFETY CONSIDERATIONS
Installing and servicing air--conditioning equipment can be
hazardous due to system pressures and electrical components.
Only trained and qualified personnel should install or service
air--conditioning equipment. When working on air--conditioning
equipment, observe the precautions provided in literature, tags,
and labels attached to the unit.
Follow all safety codes. Wear safety glasses, protective clothing,
and work gloves. Use quenching cloth for brazing operations.
Have fire extinguisher available. Read these instructions
thoroughly and follow all warnings or cautions included in
literature and attached to the unit. Consult local building codes
and National Electrical Code (NEC) for special requirements.
Recognize safety information. This is the safety--alert symbol ! .
When you see this symbol on the unit and in instructions or
manuals, be alert to the potential for personal injury.
Understand these signal words: DANGER, WARNING, and
CAUTION. These words are used with the safety--alert symbol.
DANGER identifies the most serious hazards which will result in
severe personal injury or death. WARNING signifies hazards
which could result in personal injury or death. CAUTION is used
to identify unsafe practices which may result in minor personal
injury or product and property damage. NOTE is used to
highlight suggestions which will result in enhanced installation,
reliability, or operation.
!
WARNING
ELECTRICAL SHOCK HAZARD
Failure to follow this warning could result in personal injury
or death.
Before beginning any modification or installation of this kit,
be sure the main electrical disconnect is in the OFF position.
Ensure power is disconnected to the fan coil unit. On some
systems both the fan coil and the outdoor unit may be on the
same disconnect. Tag the disconnect switch with a suitable
warning label. There may be more than one disconnect.
GENERAL
These instructions cover the installation of the accessory stacking
kit for Cooling Only and Multi--Split Units. The kit is used in
applications where there is a lack of adequate installation space
for more than one unit.
NOTE: Stacking kit part number 53DS--900------075 does not
contain stacking rails with notched brackets. Notched brackets are
not required when stacking a small unit on top of another small
unit. However, Stacking Kit part number 53DS--900------076 does
include rails with notched brackets for use when stacking a small
unit on top of a large unit. See Fig. 1
IMPORTANT: Stacking kit not for use with any type of snow or
ice stand, or with heat pump units.
INSTALLATION
Refer to Table 1 for kit contents and usage.
!
WARNING
PERSONAL INJURY HAZARD
Failure to following this warning could result in
personal injury.
Obtain help when stacking units. Personal injury can
result from lifting of heavy equipment. Additional help
may be required to align stacking rails when top unit is
being positioned.
!
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit damage.
To avoid compressor damage, never turn unit on its side or
top when installing kit components.
To avoid damage to electrical connections and refrigerant
braze joints, ensure unit is fastened securely to concrete
mounting pad before completing electrical and piping
hookups. See Fig. 1.
STACKING EQUALLY SIZED UNITS
1. Unpack accessory kit contents. Check to be sure contents
are not damaged or missing. (See Table 1.)
2. Secure unit bottom to concrete mounting pad at the 6
mounting feet locations, using lag bolts and anchors
provided in kit. Use a masonry drill to drill 1/2--in. holes
in concrete base for insertion of anchors.
3. Position 3 stacking rails on top of bottom unit as shown in
Fig. 2. Ensure the stacking rails are lined up with the 6
mounting feet on bottom unit.
4. Position the top unit on the bottom unit. Place top unit
mounting feet in the 3 stacking rails. Align mounting feet
slots with bolt holes in stacking rails. See Fig. 1.
Table 1—Kit Contents and Usage
STACKING KIT
PART NUMBER
USAGE UNIT SIZE
53DS---900--- --- ---075
(Small chassis)
38HDF,HDR018
38HDF024,030
38HDR024
538ENF,ANR018
538ENF024,030
538ANR024
53DS---900--- --- ---076*
(Large chassis)
38HDF036
38HDR030--- 060
538ENF036
538ANR030--060
KIT CONTENTS
4 Fastener Brackets
3 Stacking Rails
2 Hex Head Bolts
4 Eye Bolts
6 Lag Bolts
6 Anchors
10 Lock Nuts
10 Flat Washers
4 Fastener Brackets
3 Stacking Rails
2 Hex Head Bolts
6 Carriage Bolts
4 Eye Bolts
6 Lag Bolts
6 Anchors
16 Lock Nuts
16 Flat Washers
* Use kit 53DS ---900 --- --- ---076 when installing small chassis on top of large chassis.
Two Units Mounted
(Identical Sizes)
Two Units Mounted
(Unequal Sizes)
Fig. 1 --- Stacking Units
A06417
STACKING RAILS
FASTENER
BRACKETS
(4)
LINE UP
3 STACKING RAILS
WITH 6 MOUNTING
FEET, FRONT AND
REAR
MOUNTING FEET
3 IN FRONT
3 IN REAR
Fig. 2 --- Positioning Stacking Rails
2
A06418
ROOFTOP APPLICATIONS
IMPORTANT: Special care must be taken when fastening
equipment to a roof. Due to variations in roof design and
construction, various fastening methods may be necessary to
properly secure the equipment. Follow all local building codes
when securing a unit to a roof structure. Ensure adequate
condensate drainage is available to avoid water damage to the
building. When securing guy wires (field--supplied) to the roof,
heavy--duty anchor brackets (field--supplied) must be bolted to
the roof structure.
5. Secure top unit mounting feet (coil end and middle only)
to the stacking rails, using the 4 fastener brackets and 4
eye bolts. Use lock nuts and washers provided in kit.
When installing fastener brackets, slip bracket flange
behind top cover lip of the bottom unit. See Fig. 3.
CAUTION
UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit damage.
!
All 4 brackets MUST be used to avoid possible equipment
damage to stacked systems.
UNIT DAMAGE HAZARD
6. Attach service end mounting feet to the stacking rail with
the hex head bolts provided. Use lock nuts and washers
provided in kit. Tighten all bolts securely.
NOTE: Fastener brackets are not required for the service end.
STACKING SMALL UNIT ON LARGE UNIT
1. Unpack accessory kit contents (see Table 1). Check to be
sure contents are not damaged or missing.
2. Secure unit bottom to concrete mounting pad at the 6
mounting feet locations, using lag bolts and anchors
provided in kit. Use a masonry drill to drill 1/2--in. holes
in concrete base for insertion of anchors.
3. Position 3 stacking rails on top of bottom unit as shown in
Fig. 2. Ensure the stacking rail closest to coil end of unit
lines up with the mounting feet closest to coil end on
bottom unit. Remaining stacking rails are aligned with
mounting feet furthest from coil end on top unit.
4. Position the top unit on the bottom unit. Place top unit
mounting feet in the 3 stacking rails. Align mounting feet
slots with notches in stacking rails. See Fig. 1.
5. Secure top unit mounting feet (coil end and middle only)
to the stacking rails, using the 4 carriage bolts provided in
kit. See Fig. 4. Install the 4 fastener brackets and 4 eye
bolts (coil end and middle only). Use lock nuts and
washers provided in kit. When installing fastener brackets,
slip bracket flange behind top cover lip of the bottom unit.
See Fig. 3.
!
CAUTION
Failure to follow this caution may result in unit damage.
Attach 4 heavy duty, field--supplied guy wires to eye bolts
to avoid structural or equipment damage, especially where
winds over 50 m.p.h. are likely.
1. Follow steps 1--6 in Stacking Equally Sized Units section,
or Stacking Small Unit on Large Unit section, depending
on your application.
2. Secure 4 field--supplied, heavy duty anchor brackets to
roof structure as shown in Fig. 5. Distance of brackets
from unit must permit for a 45--degree angle between roof
structure and each guy wire (see Fig. 5).
NOTE: If wind baffle accessory is to be used in conjunction
with the stacking kit, it will be necessary to drill 2 holes in the
wind baffle. Locate the holes to allow the coil--side guy wires to
pass through the baffle without obstruction.
EYE BOLT
TOP UNIT
MOUNTING
FOOT
CAUTION
STACKING
RAIL
CARRIAGE
BOLT
FASTENER
BRACKET
UNIT TOP
COVER
LIP
UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit damage.
All 4 brackets MUST be used to avoid possible equipment
damage to stacked systems.
6. Attach service end mounting feet to the stacking rail with
the carriage bolts and hex head bolts provided. Use lock
nuts and washers provided in kit. Tighten all bolts
securely.
NOTE: Fastener brackets are not required for the service end.
BOTTOM UNIT
FASTENER
INSERTED UNDER
COVER LIP
Fig. 3 --- Securing Fastener Brackets,
Mounting Feet, and Stacking Rails
3
A06419
53DS-- 900-- -- -- 075, 076
!
NOTCH
STACKING RAIL
TOP VIEW
CARRIAGE
BOLT
SMALL UNIT
MOUNTING FOOT
SQUARE-SHOULDER
CARRIAGE BOLT
NUT
STACKING
RAIL
SIDE VIEW
53DS-- 900-- -- -- 075, 076
Fig. 4 --- Secure Top Unit Mounting Feet to
Stacking Rail Notches (53DS900076)
A06420
ANCHOR
BRACKETS
(4)
45_
ROOF
Fig. 5 --- Guy Wires Installed for Rooftop Application
Copyright 2006 CAC / BDP S 7310 W. Morris St. S Indianapolis, IN 46231
Printed in U.S.A.
Edition Date: 08/06
Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
4
A06421
Catalog No: IIK-- 53DS900-- 1
Replaces: 38--3SI / 533--853
Was this manual useful for you? yes no
Thank you for your participation!

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Download PDF

advertising