IBM 4300 User manual

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Systems
GA24-3667
-1
File No. 4300-15
IBM
4300
Processors
Installation
Manual-
Physical Planning
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Preface
This manual contains information necessary for you to
plan and prepare the physical site for the installation
of the IBM 4300 Processors. You should become
familiar with the contents of this manual prior to be-
ginning any installation planning.
Some IBM products listed herein may not be availa-
ble in all countries. Including information about such
products does not imply that these products will be-
come available in all countries.
This manual is divided into the following sections:
Section 1 contains information
on
floor planning,
electrical, environmental, and structural requirements,
and a list of abbreviations and definitions used.
Section 2 gives detailed specifications and cabling
information for the 4300 Processors.
Appendix C
is
a list of physical planning templates.
Appendix G
is
a checklist to be used as an aid in in-
stallation planning and scheduling.
It
may be copied
as required.
Note: This manual
is
intended for
use
with
the com-
panion manual IBM
Input/Output
Equipment Instal-
lation Manual-Physical Planning for System/360,
System/370, and 4300 Processors, Order
No.
GC22-
7064. The sections and appendixes that apply
to
your
Second Edition, September 1979
This is a
major
revision of,
and
obsoletes, GA24-3667-0.
data processing installation may
be
combined
in
a
single binder.
Associated Publications:
•
IBM
4300 Processors Summary and
Input/Output
&
Data Communications Equipment
Configurator, GA33-1523.
•
IBM
4300
Processors
Principles
of
Operation for
ECPS:VSE
Mode,
GA22-7070.
•
IBM
4331 Functional Characteristics and
Proc-
essor Complex Configurator, GA33-1526.
•
IBM
4331 Physical Planning Template, GX24-
3728.
•
IBM
4341 Functional Characteristics and
Proc-
essor Complex Configurator, GA24-3672.
•
IBM
4341 Physical Planning Template, GX24-
3729.
• Assembly
of
Coaxial Cable and Accessories and
Attachment
to
IBM
Products, GA27-2805.
•
IBM
3270
Information Display Station Installa-
tion Manual-Physical Planning, GA27-2787.
•
IBM
3790 Communication System Installation
Manual-Physical Planning, GA27-2769.
•
IBM
Remote Multiplexers and Communications
Terminals Installation Manual-Physical Planning,
GA27-3006.
Information contained
in
this manual is subject to change from time to time. Changes will
be reported in subsequent revisions
or
through the System Library Subsi::ription Service.
It
is possible
that
this material
may
contain reference to,
or
information about, IBM
products (machines
and
programs), programming,
or
services
that
are
not
announced in
your country. Such references
or
information must
not
be construed
to
mean
that
IBM
intends to announce such products, programming,
or
services
in
your country.
Requests for copies of IBM publications should be made
to
your IBM representative
or
to
the IBM
branch
office serving your locality.
A
form
for reader's comments is provided
at
the back
.of
the publication. H the form
has
been removed, comments may be addressed
to
the
IBM System Products Division, Product
Publications, Dept. KIO, P.O. Box 6, Endicott, NY 13760. IBM may use
or
distribute
any
of
the information
you
supply
in
any
way
it
believes appropriate without incurring
any
obligation whatever. You may, of course, continue to use
the
information you supply.
©
Copyright International Business Machines Corporation 1979
I
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Contents
1.0 Preinstallation Planning l•l
1.1
Scheduling the lnstallation
1-1
1.2 Building Requirements 1·2
1.2.1 Space and Layout Requirements
1-2
1.2.2 Equipment Layout
1-2
1.2.3 Floor Construction 1·3
1.2.4 Furniture
1-5
1.2.5 Acoustical Treatment
of
the Area
1·5
1.2.6 Electromagnetic Compatibility
1-6
1.2.7 Lighting
1-6
1.2.8 Vibration
1-6
1.3
Air
Conditioning
1-6
1.3.1
Air
Distribution and Types
of
Systems
1-6
1.3.2 Temperature and Humidity
Design
Criteria
1-7
1.3.3 Operating Limits 1·8
1.3.4
Air
Filtration 1·8
1.3.5 Temperature and Humidity Recording
Instruments
1-8
1.4 Power Requirements
1-9
1.4.1 Voltage Limits
1-9
1.4.2 Frequency Limits
1-9
1.4.3 Line-to-Line Voltage Imbalance
1-9
1.4.4 Harmonic Content
1-9
1.5
Power
Distribution System 1·9
1.5.1 Primary Computer Power Service
1-9
1.5.2 Branch Circuits
1-9
1.5.3 Grounding
1-11
1.5.4
Phase
Rotation
1-11
1.5.5 Computer Room Emergency Power-Off
Controls 1·11
1.5.6 Lightning Protection 1·11
1.5.7 Convenience Outlets
1-11
1.5.8 Primary Power Problem
Area
1·11
1.6 Safety and Fire Precautions 1·11
1.6.1 Emergency Lighting
1-11
1.6.2 Computer Location
1-12
1.6.3 Fire Prevention Considerations 1-12
1.6.4 Computer
Area
Fire Prevention Equipment
1-12
1.6.5 Data Storage
1-12
1.6.6 Supporting Facilities
1-12
1.6.7 Preplanning to Continue Operation in
An
Emergency
1-13
1.6.8 General Precautions and Personnel Training
1-13
1.6.9 Additional Reference Material l-13
1.7
Storage
of
Data Recording
Media
1-13
1.7.1
Magnetic
Tape
1-13
1.7.2
Disk
Pack,
Disk
Cartridge, Data
Cell,
and Data
Modules
1-13
1.
7.3 Data Cartridge
1-14
1.8 Channel Priority
1-14
1.9 Cables
1-14
1.9.1
Cables
Related to Initial Installations
1-15
1.9.2 Other
Cable
Requests
1-15
1.10 Customer Engineering Support Facilities
1-15
1.11 Remote Support Facility
1-15
1.12 Standard Shipping Dimensions and Environmental
Specifications
1-15
1.13
Metric
Conversion
1-15
1.14 Symbols
Used
in
Plan
Views
1·16
1.15 Abbreviations and Definitions
1-16
2.0 Processor Specifications and Cabling Schematics 4300.1
Console Table (Optional) 4300.1
4331 Processor 4331.1
4341 Processor 4341.1
5424 Multi-Function
Card
Unit 5424.1
Appendix C*: Template List
C-1
Appendix G*: Installation Planning Schedule
and
Checklist
G·l
Index
X-1
•
See
Note
in the Preface.
iii

1.0 Preinstallation Planning
The customer
is
responsible for all site preparation,
including suitable space, floor layout design, and facil-
ities for the equipment. The successful installation of
a data processing equipment configuration requires
long-range planning and continuous supervision
to
ensure that the plans are accomplished. You should
schedule preinstallation activity so that the data proc-
essing room and supporting facilities are ready when
the equipment
is
delivered.
Prepare a list of the equipment components, storage
cabinets, work tables, and other furnishings. This
is
needed
for
planning the installation.
For large or complexinstallations, considerforming
a preinstallation consulting and service group, familiar
with the subjects covered in this manual.
1.1 Sche(juling the Installation
IBM
wiJl
Pr~vide
a customized information package
containing product specifications sheets, templates,
and Installation Planning manuls for the equipment
you have ordered. Refer any problems
or
questions
you may have
aboUot
your site preparation responsi-
bilities
to
your IBM representative.
Data
processing installations differ. However, you
can use
the
following schedule as a guide (also see
section
4.0
"Installation Planning Schedule
and
Checklist'').
EightMonths before equipment delivery (ten
to
twelve months if structural alterations are required):
1. Verify the IBM equipment to be installed.
2. Determine the prospective lOcation
of
the
equip-
.ment. Make a preliminary layout
of
the
proposed
installation. Consider:
• Room size
• Physical layout of the equipment
• Floor loading
• ' Use of raised floor
• Electrical power requirements
• ·Air conditioning requirements
•
Data
communications facilities
•·
Channel
priorities
and
optimization (sequence
of
attached devices)
• Atmospheric contamination.
3. Make a survey
to
determine specific requirements
for moving
IBM
equipment from
the
delivery area
to
the
data
processing room
or
area.
For
details,
see section 1.2.1
"Space
and
LayoutRequire.:i
ments."
4. Advise IBM
of
any special security procedures,
physical access restrictions,
or
other
require- ·
ments.
5. Study availability
and
delivery quotations for
power, air conditioning, cables
not
supplied by
IBM,
and
other
equipment
to
determine
when
each
item must
be
ordered
and
delivered.
Six
Months before equipment delivery:
1. Verify
the
air conditioning
and
power require-
ments
and
schedules.
2. Verify
the
delivery
and
installation schedule.
Four
Months before equipment delivery:
1. Prepare
the
final layout
and
submit it
to
IBM for
review.
The
cable order (prepared by IBM) is
based upon
the
final layout. This
is
a critical
point in the schedule.
After
these cables have
been
ordered, no layout changes
that
affect cable
lengths should
be
made.
2. Equipment scheduled
to
be
shipped
later
than
three months after the original equipment ship-
ment
requires a separate cable order. These
ca-
bles are shipped
to
·coincide with arrival
of
the
individual units.
3. When a unit requires external cables
that
must
be
installed through walls
and/
or
floors,
arrange
for
ordering, delivery,
and
installation with sufficient
lead time
to
ensure availability for installation.
4. Arrange
for
common-carrier facilities
to
be
in-
stalled for connection
to
the
optional Remote
Support
Facility(RSF)
and
for
anyplanned
tele-
communication equipment
to
ensure availability
of
equipment for installation.
Two Weeks before equipment delivery:
1. Cables are delivered.
It
is your responsibility
to
have
the
cables set
in
place.
Under
normal cir-
cumstances, IBM will
set
cables for IBM equip-
ment
in place
at
your request, However, if
non-
IBM personnel are·selected, IBM will furnish,
upon your request, a representative
to
designate
which cable applies
to
each
unit
and,
if
applica-
ble, printed information regarding
the
laying
of
cables. IBM has
the
responsibility
to
connect
cables
between
IBM units.
Cables are shipped
with
machines
in
some coun-
tries.
2. Place IBM customer engineering equipment,
wh,en delivered,
in
the
CE
service area according
to
the
final layout.
Preinstallation Planning
1-1

One Week before equipment delivery:
1.
If
a raised floor is used, cut the cable holes in the
raised floor panels (see "Specifications" pages).
Take necessary safety precautions to prevent per-
sonnel injury because
of
exposed holes prior to
installation of the equipment.
2. Have all afr conditioning equipment installed,
tested, and ready for operation. Balance the air
conditioning system as soon as possible after the
IBM equipment has been installed.
3. Complete painting, plastering, decorating, and
the installation of floor ramps, lighting, and elec-
trical and communication facilities (including any
necessary communications lines, datasets, etc.).
1.2 Building Requirements
In
selecting
a
location for the computer installation,
consider
the
following:
1.
Availability and location of proper and ade-
quate power (including standby power where
required).
2. Space for, and location of, air conditioning
equipment (compressor, air handling equip-
ment, and cooling to'Yer or condenser).
3. Finished
floor-to~ceiling
height of 2.44 meters
(8 feet) minimum (for environmental consider-
ations).
4. Work flow
to
other areas.
5.
Space for storage cabinets, card files, desks,
communications.facilities, etc., as well as for the
daily storage of tapes,.cards, and other supplies.
6. Floor loading capacity.
7.
Proper safety and
fire.
precautions.
8. Electromagnetic interference
..
9.
Excessive atmospheric contamination in the
operating environment, such as from corrosive
gases, dust, and radio-frequency interference.
If
the computer room is located above a manu-
facturing area, ensure
that
holes in the floor
(such
.as
around pipes and telephone lines) are
sealed to prevent flammable, toxic, or corrosive
gases from entering the computer area. The
presence of odors from corrosive gases generally
indicates
an
environment
that
may harm elec-
tronic equipment.
10. Access between the receiving dock
a:t;1,d
the
computer area for movement of the equipment.
1.2.1
Space
and
Layout
Requirements
Space and layout requirements differ for each equip-
ment configuration and depend upon the intended
applications,·as well as
the
physical area available. A
few general rules are:
1•2
IBM 4300 Processors Installation Manual-Physical Planning
1. The floor area required for the equipment
is
de-
termined by the specific components to be in-
stalled, the location of columns, provision for
future expansion, floor loading capacity, etc.
2. As a preliminary check for clearance problems,
paper templates of the units (made to the scale of
your building plans) can be used on the building
plan itself.
It
may be convenient to make a rigid,
full-scale template of the largest unit. Carry this
template along the access route to check for po-
tential clearance problems at doorways, around
passageway corners, and in elevators. ,
Discuss access-route clearance problems with
your IBM representative. IBM equipment
is
usu-
ally shipped.with the covers in place.
If
neces-
sary, shipment without covers may be requested.
Unless otherwise noted
on
individual
"Specifications" pages, all IBM units can be
re.-
duced to at least 750 x 1525 millimeters
(29.5 x 60 inches) for shipment
..
3. Provide space fot
'st<>rage
cabinets, card files,
desks, communications facilities, etc., as
well
as
for the daily storage of tapes, cards, and other
supplies.
4. Store all combustible•materials in properly de-
signed and protected storage areas. (See sections
1.6 "Safety and Fire Precautions" and 1.7
"Storage of
Data
Recording Media.")
5.
At
the option of IBM, test equipment may be
assigned
to
the imtallation to maintain the equip-
ment. The test area should be located
on
the
same floor level as the computing
equipment~
For
detailed information, see section 1.10
11
Customer
Engineering Support Facilities.
11
1.'2.2
Eq11ip111ent
Layout
Before attempting to make a layout, assign priorities
to the
input/
output channels and
to
the control units
to be attached to the channels. (See "Channel Prior-
ity.")
Operational requirements determine the specific
location of the
va~ous
components in the computer
room. Because the separate components are con-
nected by cables
of:
specified length, and because of
space limitations, priority, and the necessity for
l)laintaining clearances between units for servicing,
work space, and aisles, you may need to prepare and
analyze several tentative layouts beforedeciding
upon lhe final plan. ·
If
you plan to in,sian the equipment in two
or
more
stages, a separate.layout should be prepared for each
stage. Consider
c~annel
priority assignments and
cable lengths for each stage.
To make a layout,
an
ac;curate drawing of the pro-
posed area is necessary.
For
.a
precise layout, trans-
~
I
I
I~
)
·.~

!
·.
I
\~
parent
plastic templates are available from IBM. The
templates show the space required for the
w~ight
distribution, and the clearances
requiredto
allow
working room for operator and service personnel
and
for test equipment. Templates also show the radius
of swinging gates and covers, and the location of
casters and cable holes. Clearances shown
on
the
templates may be overlapped as long as the larger
clearance
is
maintained, except that.the gate swing
of an auxiliary unit must not interfere with the gate
swing of its corresponding control uriit.
Equipment must be located so
that
the length of
connecting cables does not exceed the maximum
limits. These limits vary for each unit. Refer to the
"Specifications" pages and cable schematics for the
appropriate limits.
The prepared layout must be accurate and to scale.
IBM uses the layout to determine the appropriate
cable lengths. The following configuration consider-
ations must be made. Be sure to include the follow-
ing items, as well as any other unique considerations,
on the layout:
1. Service clearances required for each unit.
2.
·If
the equipment
is
to be installed
on
a raised
floor:
a.
Indicate the location
of
any obstruction or
constriction
that
may affect cable routing.
b. Indicate the height
of
the raised floor above
the base floor.
3. If the equipment
is
not
to be installed on a
raised floor:
a. Indicate the planned placement of cables for
minimum obstruction.
b.
If
cables are to be routed indirectly between
. units (such as along walls
or
suspended), in-
dicate the amount of additional cable re-
quired.
4. Location of power receptacles.
5.
The number of control units to be assigned to
each channel.
6. The number of
input/
output units
to
be
attached to each control unit..
7. Location of air conditioning equipment
and
controls.
8.
Location of files cabinets, desks, and other of-
fice equipment.
9. Location of room emergency power-off con-
trols.
10. Location of all entrances, exits, windows,
and
columns or pillars.
Also consider the following when planning the lay-
out:
1. Flow of work and personnel within the area.
2. Operator access
to
units, as required.
3.
If
the equipment is
not
to be installed
on
a
raised floor, consider:
a. The maximum cable lengths.
b. The need for mechanical protection, such as
cable guards or ramps, for the safety of per-
sonnel and equipment.
4. The effect of channel sequence or priority
on
the physical layout of the units.
5.
The visual access required between a control
unit and
at
least one of its associated
input/
output devices.
If
a problem exists, con-
tact your IBM representative.
6. Avoiding direct sunlight where display units are
to
be located. The recommended lighting level
is
800 lux (75 foot-candles).
7. Location of any planned safety equipment.
8.
Future expansion.
Review the final layout to ensure
that
cable limita-
tions have
not
been
exceeded, and
that
proper clear-
ances have been maintained.
Note
that
cables are ordered four months prior to
equipment installation. Notify IBM immediately of
any layout changes
that
affect cable lengths.
Changes in the cable specifications requested within
three months of the scheduled shipment
date
may
subject you to
an
additional charge.
1.2.3
Floor Construction
The floor must be capable of supporting
the
equip-
ment. The weight of each unit is listed
on
its
"Specifications" page.
IBM considers the following factors
in
determining
floor loading:
1.
If
three or more units are placed side by side
(abutted), no allowance
can
be
taken
for side
clearance
at
the ends of the units.
2. Regardless of the actual service clearances re-
quired,
the
total area used
in
floor loading com-
putations
cannot
extend more
than
760 millime-
ters (30 inches) in any direction from
the
unit.
3. 98
kg/m
2
{20
pounds/foot
2)
of service area used
in the calculation must be applied as "live load"
in floor loading computations.
4.
If
a raised floor
is
used,
50
kg/m
2
(10
pounds/foot
2)
of total area must be used as
the
raised floor load in the floor loading computa-
tions.
5. The weight of cables has been considered as
part
of the unit weight.
6. Most office building floors rated
at
250
kg/m
2
(50
pounds/foot
2) have
an
additional allowance
of 125
kg/m
2 (25
pounds/foot
2) for partitions.
Preinstallation Planning
1-3

The localbuilding code authority should be con-
tacted about using this partition allowance in de-
termining the floor loading capacity.
1.2.3.l
Use
of
Raised Floors
A raised floor accomplishes the following major ob-
jectives:
1. Allows for future layout flexibility with minimum
reconstruction cost
2. Protects the interconnecting cables
and
power
receptacles
3. Provides personnel safety
Free-Access Floor:
Pedestal Supported Panels
Panels Removable
Cutouts
in
Panels
Free-Access Floor:
SubframingSupported Panels
Panels Removable
Cutouts
in
Panels
Note: A raised-floor-panel lifter should
be
made readily available
in
the
computer room
at
a·convenient location.
Figure
l·
1.
Types of Raised Floors
14
IBM
4300
Proc~11sors
Installation Manual-""Physical Planning
4. Permits the space between the original floor and
the raised floor to
bc:1
used to supply air to the
equipment
and/
or area.
A raised floor
can
be constructed of steel, alumi-
num, or fire-retardant wood or other noncombustible
material. The two general floor types are shown in
Figure 1-1.
If
a raised floor is
not
used, cable guards
or
ramps
should be provided for safety of personnel.
(',
'
\

l.2.3.2
Raised
Floor
Recommendations
In
the
construction
of
raised floors,
the
following
recommendations
should
be
followed:
1.
Where a metallic raised floor is used,
ensure
that
no
metal
is exposed
to
the
walking surface. Such
exposure could
constitute
an
electrical
safety
haz-
ard.
Providing a
conductive
path
from a metalic
raised floor
structure
to
ground
is necessary
to
minimize
static
buildup.
2.
The
raised floor height
should
be
300
millimeters
(12
inches).
The
raised floor
clearance
should
be
adequate
to
accommodate
piping,
power
distribution,
etc.,
with
an
additional
minimum
of
110
millimeters
(4.5 inches) allowed for passage
of
cables
and
connectors
over
or
under
these
or
other
obstacles.
3.
When
a raised floor
panel
is
cut
for cable
entry,
air register, etc.,
additional
panel
support
may
be
required to
restore
structural
integrity.
4.
Protective
covering should
be
used
to
prevent
damage
to
floor tiles,
carpeting,
and
panels
while
equipment
is
being
installed
or
relocated.
5.
Sharp
edges must
be
removed
from all floor
cut-
outs
through
which
cables pass.
6.
Concrete
subfloors
may
require
treatment
to
pre-
vent
the
release
of
dust.
l.2.3.3
Floor
Covering Recommendations
Floor
covering material
can
contribute
to
the
buildup
of
high
static
electrical charges
caused
by
the
motion
of
people, carts, etc.
Abrupt
discharge
of
these
static
charges
can
cause discomfort
to
personnel,
and
may
cause
malfunction
to
electronic
equipment.
This
static buildup
and
discharge
can
be
minimized by:
1.
Ensuring
that
the
floor
surface
resistance is as
low as possible
but
not
lower
than
150,000
ohms
(for
safety
reasons)
and
not
higher
than
2 x
10
10
ohms.
The
resistance is
measured
between
the
floor
surface
and
the
building
ground
(or
applica-
ble
ground
reference).
Use
the
procedure
out-
lined
in
NFPA
No.
56A,
Chapter
462,
Section
4628
(or
applicable local
or
national
equivalent).
Any
floor covering should
have
antistatic
prop-
erties.
If
antistatic
agents
are used,
the
effective
antistatic
life may
be
short
and
require
frequent
retreatment.
Maintenance
of
all
antistatic
floor
coverings
(carpet,
tile,
etc.)
should
be
in
accord-
ance
with
the
individual supplier's
recommenda-
tions.
Vacuuming
equipment
used
in
the
computer
area
should
have
a
nonconductive
hose
and
nozz-
le assembly. This
safety
precaution
minimizes
the
possibility
of
static
discharge
or
electrical shock.
2.
Maintaining
the
room
humidity
within
control
limits as
defined
in
section
1.3.2
"Temperature
and
Humidity
Design
Criteria."
1.2.4
Furniture
Furniture
can
provide a source
of
high static charge.
Ensure
that
seat
covers, etc. are
made
of
materials
that
resist
static
buildup.
Many
plastics
permit
the
buildup
of
high static charges.
Cloth
covered
chairs
are normally less susceptible
to
generating
static
charges. Casters, mats, pads, etc.
made
of
rubber
or
other
insulating materials
should
be
avoided, unless
they
contain
conductive
material.
If
casters, ball
bearings, etc.
are
used, a
graphite
or
other
conduc-
tive
lubricant
should
be
used.
The
resistance
of
furniture
parts
that
touch
the
floor
(such
as casters
and
feet)
should
be
less
than
10
9
ohms
measured
from
the
metal
in
the
furniture
frame
to
a
metal
test
surface
upon
which
the
furni-
ture
sample is placed.
1.2.5
Acoustical
Treatment
of
the
Area
Acoustical
treatment
of
the
computer
room
is
recom-
mended
to
provide for
more
efficient
and
comforta-
ble
operation.
Proper
acoustic design
of
a
computer
room
may
require
the
services
of
an
acoustical spe-
cialist.
The
total
environmental
noise level
of
a
computer
room
is
affected
by
all noise sources
in
the
room,
the
physical
arrangement
of
the
noise sources,
and
the
sound
reflective
(or
absorptive) characteristics
of
the
room
surfaces.
The
noise level
in
an
installation
can
be
reduced
by
proper
spacing
and
orientation
of
mechanical
equip-
ment.
Sufficient space
should
be
provided
around
such
units.
The
farther
apart
they
can
be
placed,
the
lower
the
overall
room
noise will be.
When
possible,
place
the
noisier units so
that
operating
personnel
are
not
constantly
working
between
them.
Consider
placing
the
quieter
electronic units
between
the.me-
chanical
units.
An
effective
method
is
to
place the.se
units
at
an
angle
to
an
aisle
or
an
open
work
area.
Air
conditioning
blowers
and
other
external
noise
sources, if
not
properly installed,
can
contribute
sub-
stantially
to
the
overall noise level.
Duct
work
may
conduct
noise
to
or
from
other
rooms. This
can
be
reduced
by
acoustical
treatment
of
the
ducts.
Using absorptive materials reduces
the
overall
sound
level
throughout
an
installation.
For
effective
and
economical
sound
reduction,
use a
sound
ab-
sorptive ceiling.
Satisfactory
results
can
be
expected
from
a false
(dropped)
ceiling.
For
large rooms,
using absorptive
material
(such
as
carpet
floor
cover-
ings)
should
result
in
further
reduction
of
the
sound
level.
To
prevent
computer
room
noise from
reach-
Preinstallation
Planning
1
·5

ing adjacent office areas, the walls should
be
con-
structed from the structural floor
to
the structural
ceiling, and
be
properly sealed. Doors should also
have a good seal.
1.2.6
Electromagnetic
Compatibility
Planned
data
processing installations may occasion-
ally be
in
areas having a high electromagnetic field
environment. This condition results when the equip-
ment
is
near a radio-frequency (rf) interference
source (such as radio, TV,
and
RADAR transmitting
antennas, or medical treatment equipment), and
certain industrial equipment (such as
rf
induction
heaters,
rf
arc welders, and insulation testers).
Un-
der such conditions, IBM should be consulted
to
determine whether
any
special installation or prod-
uct considerations are advisable to ensure normal
operation
and
maintenance.
1.2.
7 Lighting
Illumination of
540
to
800 lux
(50
to 75 foot-
candles), measured 760 millimeters (30 inches)
above
the
floor, should be maintained.
Direct sunlight should be avoided because lower
levels
of
illumination are needed to properly observe
the various console and signal lamps. Also, direct
sunlight may cause malfunction
of
devices
that
em-
ploy light sensing. General illumination should
be
sectionally controlled by switches so
that
portions of
the lighting
can
be turned off as desired. Lights
should
not
be powered from the computer power
panel (see section 1.5 "Power Distribution Sys-
tem").
Provision should be made for emergency lighting.
See section 1.6 "Safety and Fire Precautions"
and
section 1.6.6 "Supporting Facilities."
1.2.8
Vibration
Vibration common
to
an
office building environment
will
not
affect equipment operation.
;
1.3 Air Conditioning
In
determining the air conditioning capacity neces-
sary for
an
installation, consider the following fac-
tors:
1-6
IBM 4300 Processors Installation Manual-Physical Planning
Equipment
heat
dissipation
Personnel
heat
dissipation
Latent
load
Lighting
Fresh air introduction
Possible reheat
Heat
conduction through outer walls
Ceiling
Floors
Door openings
Partitions
Glass wall area
Computer room cooling is basically a sensible (as
opposed
to
a latent) cooling operation. (Sensible
heat
is defined as the transfer of thermal energy to
or from a substance resulting in a change
in
tempera-
ture. Latent
heat
is
the thermal energy absorbed or
evolved in a process, other
than
change of tempera-
ture.)
Most IBM equipment
is
aircooled by internal blow-
ers. Most units are designed for updraft air flow. A
few are designed for downdraft air flow. This must
be considered when planning the air conditioning
system,
and
when laying out the floor plan for adja-
cent units. Unless noted
on
the individual
"Specifications" pages, updraft airflow
is
used.
A separate air conditioning system
is
recommended
for the
data
processing installation. Because of
the,
amount
of
heat
dissipated while the equipment
is
operating, the air conditioning system must provide
year-around temperature and humidity control. Heat
dissipation ratings are given
on
the ''Specifications"
page for each uniL
Air conditioning units should not be powered from
the computer power panel. The feeder for the air
conditioning system
and
the computer room power
should
not
be in the same conduit.
1.3.1
Air
Distribution
and
Types
of
Sys-
tems
The
heat
load
of
the computer equipment is concen-
trated
in
relatively small areas.
For
this reason, give
attention to the method of air distribution to elimi-
nate
areas of excessive air motion.
The air conditioning system should use recirculated
air with the introduction
of
a fixed minimum
of
fresh
air for personnel. This fresh air permits pressuriza-
tion
of
the area so
that
air leakage is always outward
to
help prevent entry of dust from adjacent areas.
Several types of air conditioning systems
can
be
designed
to
satisfy the temperature and humidity
requirements. The following are the most common
types of systems, with a brief description
of
each.

(
~·
·'-..);
1.3.1.1 Overhead System
In this system, the entire
heat
load
of
the.room
(including the
heat
generated by the computer) is
absorbed by the air supplied
to
the room. The air is
generally supplied from either
an
overhead duct and
diffuser system
or
by a ceiling plenum.
The return air
to
the air conditioner is
drawn
from
either ceiling
return
registers above the
heat
produc-
ing units,
or
a fixed
pattern
of returns in
the
ceiling
and/
or
in the walls around the room.
The temperature control system should consist
of
temperature and humidity controls placed in a repre-
sentative location. A temperature
and
humidity re-
corder should be mounted
adjacent
to
the
controls
to
monitor the room conditions (see section 1.3.5
"Temperature
and
Humidity Recording Instru-
ments").
1.3.1.2 Underfloor System
In
this system, the space
between
the building floor
and the raised floor carries the supply
of
conditioned
air. All air is discharged into the room through floor
registers
or
perforated floor panels.
The
air returns
by ceiling registers.
This system allows a higher air-return temperature
without affecting the design conditions
of
the overall
room. This system takes into account a
heat
transfer
factor through the raised floor.
The system must have air temperature controls for
the underfloor supply system
to
prevent uncomfort-
ably cold floor surfaces. Air entering the
data
proc-
essing equipment through cable openings must
be
within
stated
specifications.
1.3.1.3
Overhead/Underfloor
System (Two Air
Con-
ditioning Systems)
One
system with separate controls supplies condi-
tioned and filtered air
to
the area
underthe
raised
floor. The air is discharged into
the
room through
the floor panels
or
registers. This
air
absorbs most
of
the
heat
generated by
the
data
processing units while
they are in operation. Relative humidity
of
the
air
supplied to the units should
be
maintained within
the
range given
on
the "Specifications" pages for
the
units installed. Temperatures should be controlled
to
prevent condensation
on
or within the units.
The
second air handling system supplies air directly
to
the room through overhead ducts. This system
should be large enough
to
absorb
the
remaining
heat
load in
the
computer area.
It
should
be
capable
of
maintaining room temperature
and
relative humidity
as specified for
the
computer units when normal
machine power is off,
and
give year-around air con-
ditioning, ventilation,
and
heating.
1.3.2
Temperature
and
Humidity
Design
Criteria
The
data
processing equipment
can
tolerate a
con-
siderable range
of
temperature
and
humidity, as de-
scribed
on
the "Specifications" pages for
each
unit.
An
air conditioning system should
be
designed
to
maintain
24
°C (75
°F),
and
50
percent
relative
hu-
midity
at
altitudes up
to
2 150 meters
(7,000
feet).
This design criteria provides for the largest buff
er
in
terms of available computer operating time in case
of
air conditioning failure.
In
geographic areas where a
design criteria
of
50
percent
relative humidity is
not
practical, use the value
of
45 percent.
If
the air conditioning system fails, the computer
can
be operated until it reaches its specified limits.
This increases
the
time available
to
repair
the
air
conditioning system before
the
computer must be
shut down. The design criteria has also proven
to
be
a generally acceptable comfort level for personnel.
If
deviations in either direction from
the
recom-
mended design criteria are maintained for extended
periods, the
data
processing equipment will be expo-
sed
to
malfunction from external conditions. This
exposure increases as
the
deviation becomes larger.
High relative humidity levels may cause improper
feeding
of
cards
or
paper, as well as
operator
dis-
comfort
and
condensation
on
windows
and
walls
when
the
outside temperature falls below
the
room
dew point.
Low
relative humidity levels alone will
not
cause static discharge. However, in combination
with certain types
of
floor construction, floor cover-
ings, furniture, etc., static charges generated by the
movement
of
people, paper,
or
equipment are more
readily stored. These charges
may
be high enough
if
discharged by contact with
another
person
or
object
to
be
quite objectionable
to
operating personnel.
If
discharged
to
or
near
data
processing equipment,
these charges
can
cause intermittent machine mal-
function.
Because temperature
and
humidity deviations over
only a few hours
can
permit the
retention
of
static
charge, the air conditioning system should
be
auto-
matically controlled
and
provided with a
high/low
alarm
or
a continuously recording device with appro-
priate limits marked.
In
some areas, adding moisture
to
the
room air is
necessary
to
meet
the
design criteria. Some means
of
adding moisture are: steam grid
or
jets, steam cup,
and
water
atomizers. To avoid contamination
of
the
air,
water
treatment
may be necessary in areas with
high mineral
content
in
the
water.
In
localities where
the
outside temperature drops
below freezing, single-glazed windows permit
con-
densation
to
form.
If
outside temperatures are con-
siderably below freezing,
the
outside walls
of
the
Preinstallation Planning
1-7

buiJding should be waterproofed
or
vapor sealed
on
the inside. Otherwise, structural damage
to
the
out,.
~"
side walls may occur.
See sections
1.2.3
"Floor
Construction
11
and
1.2.4'
"Furniture"
for related·information
on
the
reduction
of
static electricity.
1.3.3
Operating
Limits
Individual units have varying operating limits.
Refer
to
the "Specifications" pages for
each
unit fo
deter-
mine
the operating limits for
the
complete equipment
installation.
When
conditioned air is supplied
near
the base
of
any unit by a duct
or
underfloor supply,
th~.
abso.lute
maxim~m
relative humidity
of
that
air must
not
be
.
greater
than.80percent.
Air temperature in this duct
oruncierfloor supply should
be
kept
above the room
dew point temperature to prevent
c~ndensation.
within or.on the units. · · '
The
"nonoperatiqg
range"
specifies a
satis~actory
environment,when normal machine power
is;
turned
off,.such as during off-shift hours.
.
~·
.
. . .
Note: The
air
entering the units must be within the
indicated
r~nges
before power
is
turned on. dnde.r
no circumstances
may
the air entering the unit ex-
ceed the
minimum
or.maximum operating tempera•
ture
and
humidity limits
for
any
unit
..
,
:Certain units, such
as
the
4300
Processors, have
downdraft cooling; You should adhere to the recom-
mended clearances
and
floor space requirements
when locating a unit with updraft cooling·adjacent
to
a unit with downdraft cooling.
Air
cbnditioning
vents·must
riot
be directed into the base
of
any
units.
1.3:4
Air
Filtration
A high-efficiency filter, rate.d according
to
the
me-
chanical
and
electrostatic filter specifications given
below, should be installed
to
filter all air supplied to·
the
comp:µter room. Because mechanical
and
elect-
rostatic air cleaners operate
on
different principles, a
different rating is specified for each type. Ratillgs
are dete'rmined by using
the
test
methods
outlined
in
tlie
American
Society
of
Heating, Refrigeration
and
Air.
Conditioning·Engfoeers (ASHRAE) Staridard
No.
52-76
(or local
or
national equivalerit).
Special air filtration is necessary where installa-
tions are exposed
to
corrosive gases, salt air,
or
unu-
sual
dirt
or
dust conditions.
1-8
IBM 4300 Proces.sors Installation Manual-Physical Planning
1.3.4.1 Mechanical Air Filters
Mechanical air filters must be
rated
at
a minimum
of
'~,
·~
'
'
'
,
.
'
20
percent
.efficiency. This rating applies
to
a clean
filte;«and.must be
maintain~d
throughout .the life of
the
filter~·
.
1.3.4.2.Electrostatic
Plate
Filter
Electrostatic
plate
filters must be
rated
at
a minimum
of
85
to
90
percent
efficiency.
Electrostatic air cleaners are designed
to
operate
at
85
to
90
percent
efficiency
at
a given face velocity.
As
the
face velocity through the filter iqcreases, its
efficiency decreases. Therefore,
an
electr.ostatic
.
,
~
. '
filter operated
at
inc;reased face velocities
or
below
8S
percent
efficiem::y '}'ould allow a
greateruumber
of
particl~s
charged by
the
ionizing wires
to
pass
through the plate
secti~n
and
enter
the room.
This
would increase what is known as space charge. As
the space charge increases, a greater voltage differ-
ential occurs
between
the positive cliarged particles
and
the negative surfaces in the room. This causes
dust
td
accutriulate rapidly
on
all
surfaces, and de-
feafs the purpose
of>
a
high-efficiency filter. .
.
,
:
1.3.5
..
T~mperature.and
Humidity
Record-
ing.
Insfr~111eni£
· ·
Temperature
and
humidit:y recording instruments are
desirable
and
may be installed
to
provide a continu-
ous record
()f
temperature
and
humidity conditions
in
the
area.
If
air conditioning requirements are
not
met
1
a
,Iec().:!d
may
then
be avatlable
to
indicate the
extent
~.!'.\?
duration,of
.~bnorma,l
conditions'.
It
may be necessary
to
stabilize
the
equipment
within
the
specified environmental limits before re-
suming operation.
'"The
recotd
bt
tbniperature
and
humidity conditions
can
be used to:
1. Ensure.that
the
air conditioning system is operat-
hig
proper}~,,
.
2. Determine whether·a mandatory,
temperatµre/humidity
conditicming period
is
nec-
essary, (See,section
l.'.7
"Storage of
Data
Re-.
cording Media.'!}
A vi!tual
\or
audible signal deviee· should
be
included-
to
indicate
that
temperature
and/
or
humidity condi-
tions
ate
approaching
the
maximum limits. Taking
timely corrective action may allow continuous opera-
tion.
Direct..:reading'instruments with a seven-day
chart-
ingfeature:should
be·
used for all installations
to
monitor
the
ambient'room conditions. The recorder
should
be
at
a convenient location
and
adjacentto
the
air conditioning and·humiditycontrols.
II

A remote indicating
instrument
is
recommended
for monitoring underfloor air conditions. This
should also be a
seven-day
charting device
and
can
be the wet and dry bulb
or
electronic type.
The
re-
cording
instrument
can be
on
the
computer room
wall, in the mechanical equipment room,
odn
any
location
that
is
convenient
to
personnel
r:esponsible
for maintaining air quality.
1.4 Power Requirements
A three-phase, five-wire power distribution system
should be provided for flexibility in your
<lat~
proc-'
essing installation. However,
depending
on
the
types
of
equipment installed, a
single~phase
distribution
system may
be
sufficient. The use
of
five wires will
enable you
to
provide.power for
three-phase
or
single-phase equipment. The five
wiresconsist
of
three
phase
wires,
one
neutral
wire
and
one. · ·
insulated equipment ground
wire (green, or green
with yellow
trace).
. ·
Refer to the individual "Specifications" pages to
determine which voltage options are available for
each
unit.
The total power
demand
depends
upon
the
equip-
ment
configuration, as well as
upon
the type
of
oper-
ation. A power summary
can
be
derived by
11dding
the kVA values
shown
on
the
individual
unit
.
"Specifications" pages: A more detailed analysis
of
.
power system requirements
can
be
obtained;by using
the IBM System
Power
Profile analysis. IBM
can
provide this analysis, which
is
based
upon
your
equipment configuration showing
the
quantity, type,
and model
of
each unit. This
report
shows
the
power
requirements, as well as
heat
dissipated
per
hour.
1.4.1
Voltage
Limits
The
line-to-line,
steady-state
voltage tolerances when,
the equipment
is
operating must
be
maintained
w.ith-
in
plus 6
percent
and
niinus 8
percent
of
the
normal
rated
voltage, measured at
the
receptacle.
A
transient
voltage condition must
not
exceed
plus
15
percent
or
minus
18
percent
of
hominal
and
must
return
to
within a
steady-state
tolerance
of
plus 6
percent
and
minus 8
percent
of
the
normal
rated
voltage within
30
cycles.
Individual
product
specifications pages should
be
reviewed to determine
the
voltage tolerance for a
specific system configuration.
The
steady-state
tran-
sient limits given above cover most combinations
of
attachable
IBM
I/0
equipment.
1.4.2
Frequency
Limits
The line frequency must
be
maintained
at
60
or
50
±
1/2
Hz
(depending
upon
the
rating
of
the
equip-
ment).
1.4.3
Line-to-Line
Voltage
Imbalance
In
a
three-phase
system, any
three
line-to-line equip-
ment
voltages must
not
differ by more
than
2.5 per-
cent
from
the
average
of
the
three
voltages. All
three
line-to-line voltages must be within
the
limits
specified (see section
l.4.1
"Voltage
Limits").
1.4.4
Harmonic
content
The
maximum
total
harmonic
content
of
the
power
system voltage waveforms
on
the
equipment feeder,
when
the computer equipment is
not
operating, must
not
exceed 5 percent.
1.5 Power Distribution System
This section addresses
the
requirements for electrical
power distribution systems.
1.5.1
Primary
Computer
Power
Service
For
maximum reliability,
the
computer power
panel
should
connect
to feeders
that serve no other loads.
Electrical noise producing devices, such as account,..
ing equipment,
card
punch
machines, typewriters,
and
desk calculators, should
be
connected
to panels
that
are
separate
from those feeding
the
computer
units.
1.5.2
Branch Circuits
The
computer
branch
circuit
panel
should be
in
an
unobstructed,
well-lighted
area
inthe
computer
room.
The
individual
branch
circuits
cm
the
panel
should
.be
protected
by suitable circuit breakers properly
'rated according
to
manufacturer's
specifications
and
applicable codes.
Each
circuit
breaker
should
be
labeled to identify
the
branch
circuit
it
controls.
The
grounding wire
of
the
branch
circuit must
be
insulated
and
equal in size to
the
neutral
and
phase
conductors.
Terminate
branch
circuits as close as possible to
the
unit
they
supply: within 3 meters
(10
feet).
Run
branch
circuits
in
either
rigid
or
nonrigid metallic
conduit (or in compliance with local
or
national
.
standards).
The
conduit system should
be
continu-
ous,
uninterrupted,
and
connected
to
the
building
or
transformer
ground (Figure
1-2).
The
diagram shows
the
elements involved in
pro-
viding reliable design for
the
power source supplying
a
computer
system. While
the
voltages
shown
repre,.. ·
sent
commercial power commonly available
in
Cana-
da
and
the
U.S.,
the
basic principles
can
be
adapted
to
commercial power sources world-wide.
Power
cords are supplied
in
4.3-meter
(14-foot)
lengths, unless otherwise
noted
on
the
"Specifica-
tions"
pages.
The
length is measured from
the
Preinstallation Planning
1-9

Computer Room Power Panel
Building
Distri~ution
Center
Three-Phase
Service
Feeder Distribution
for other Loads
Service Entrance
Grounding Electrode
Grounding
Wire
and
Neutral. Attached
to
Grounding Electrode
at
the
Sama Point
Figure 1-2. Power Distribution Systems
Grounding
Terminal Bar
Feeders
(5-Wire)
Metallic Cold Water
Pipe, Building Steel,
or Driven Ground
Rod
1-10
IBM
4300
Processors Installation Manual-Physical Planning
i...;.;.--;--,_
Circuit Breakers
of
Appropriate Size
Branch
Circuits
Customer-Supplied
Receptacles/Connectors
in
'Accordance with
Local
Codes
Legend:
-·-·
-Phase Wires and Neutral
~Insulated
Green
Wire
Ground
• Install isolation
or
step-down transformer if required•
...
For loads requiring a neutral,
attach computer/data processing
equipment only. ·
,,..--,,\
!

a
11
11\
11
bl
h .
w
sym o
on
t e
plan
views. Power plugs fur-
nished by IBM for
4300
processors are watertight
and
can
be
located
under
the
raised floor. Your re-
ceptacle should also
be
watertight
and
can
be
either
an
inline
or
a fixed type.
Note:
The service ratings
for
the branch circuit con-
nections are given in
IBM
Input/Output
Equipment
Installation Manual-Physical Planning for
System/360,
System/370,
and
4300
Processors,
GC22-7064.
1.5.3 Grounding
All
IBM
units are provided with
an
equipment
ground wire (green
or
green with yellow trace).
At
the
branch
circuit panel, the green wire ground from
all units must be
connected
to
one
main grounding
conductor. This insulated equipment grounding wire
is a dedicated ground,
not
a neutral,
and
must be
carried
back
to
service ground or suitable building
ground.
Conduit
must
not
be used as
the
only
grounding means.
1.5.4
Phase
Rotation
The
three-phase power receptacles for
the
computer
(if
required) must
l;>e
wired for correct phase
rota-
tion.
When
looking
at
the
face
of
the
receptacle
and
counting counterclockwise from
the
ground pin,
the sequence is phase 1, phase 2,
and
phase 3.
1.5.5
Computer
Room
Emergency Power-
0/f
Controls
As a safety precaution, room emergency power-off
controls should
be
provided for disconnecting the
main service wiring supplying
the
computer equip-
ment. These controls should be located
both
con-
venient
to
the
operator
and
next
to
main exit doors.
1.5.6
Lightning
Protection
Installing lightning protection devices is recommend-
ed
on
the
computer power source when:
• Primary power is supplied
by
an
overhead power
service
•
The
utility company installs lightning protectors
on
the
primary power source
•
The
area
is subject
to
electrical storms
or
equiva-
lent
type power surges.
You are responsible for the selection
and
installa-
tion
of
lightning protection devices.
1.5.
7 ConveniJnce Outlets
i
A suitable
numberpf
convenience outlets should be
installed in the con\puter room and the
CE
area for
use by building
ma~ntenance
personnel, service rep-
resentatives, etc.
cf
onvenience outlets should be on
the lighting or
oth~r
building circuits, not on the
computer power
p~nel
or
feeder.
For
detailed re-
quirements, see seqtion 1.10
"Customer
Engineering
Support Facilities.
'I'
Under
no
circum~tances
are the service outlets on
IBM units to be
us'd
for any purpose
other
than
normal servicing.
'I
1.5.8
Primary !fower Problem Areas
IBM equipment
op~rates
satisfactorily
on
the normal
power supplied by
~ost
power companies. However,
many outside
variaJ:>les
exist over which neither the
power company
nor
IBM has any control. To guard
against possible coiflputer malfunctions caused by
outside (radiated
of
conducted) transient 'electrical
noise signals being
l~uperimposed
on the power to the
computer, power
di~tribution
design should comply
with the specified
I~M
equipment requirements.
Failures caused
bf
the power source are basically
of
two types:
1
!
1.
Power
outages:~'
his includes short duration dips
in voltage as we l as prolonged outages.
If
the
frequency
of
su h power failures is not acceptable
for your operati n, installing standby
and/
or
buffered power biay be necessary.
2. Transient electrifal noise superimposed on power
lines: This may
~e
caused by a variety of industri-
al, medical, com\nunications, or
other
equipment
in the vicinity
ofl
the power company's distrib-
ution lines, or wfthin
or
adjacent to the comput-
ing facilities. M+tor operated devices
on
the same
power source as lthe computer may, under certain
conditions,
caus~
intermittent electrical disturb-
ances.
11
!
I
1.6
Safety
and
Fire
Precautions
Safety is a vital
fac~.p
r in planning a computer instal-
lation. This should
J:>e
reflected in the choice
of
a
computer location,
~uilding
materials used, fire de-
tection
and
protectipn equipment, air conditioning
and
electrical systetjis,
and
personnel training.
I
I
1.6.1
Emergenc~
Lighting
You should make ptpvision for emerg.ency lighting.
Requirements for etjiergency lighting may be found
in
NFPA
No. 75-19176 (or the local or national
equivalent).
Preinstallation
Planning
1-11

1.
6.2
Computer
Location
1.
The
computer
area
should
be
in
a
noncombustible
or
fire-resistive building
or
room.
2.
The
computer
room
should
not
be
above, below,
or
adjacent
to
areas
where
hazardous
materials
or
gases
are
stored,
manufactured,
or
processed.
If
it must
be
located
near
such
an
area,
take
extra
safeguard
precautions.
1.
6.
3 Fire Prevention Considerations
1. Walls enclosing a
computer
area
should
be
of
noncombustible
materials (minimum
of
one
hour
fire resistance
rating).
These
walls should
extend
from
the
structural
floor
to
the
structural
ceiling.
2.
Where
a false
(dropped)
ceiling is
to
be
added,
it
should be
constructed
of
noncombustible
or
fire-
resistant
material. All
ducts
and
insulating
mate-
rials should
be
noncombustible
and
nondusting.
If combustible materials
are
used in
the
space
between
the
structural
ceiling
and
the
false ceil-
ing, provide
appropriate
fire
protection.
3. A raised floor, installed
over
the
structural
floor,
should
be
constructed
of
noncombustible
or
fire-
retardant
materials.
If
the
structural
floor is
of
combustible material,
it
should
be
protected
from
the
ceiling below,
preferably
by
water
sprinklers.
Note:
Be.fore the computer is installed, the space
between the raised
and
the structural floors
should be cleared
of
debris. This space should be
periodically checked
after
installation to keep it
free
of
accumulated dust
and
debris.
4.
The
roof
or
floor
above
the
computer
and
record-
ed
media
storage
areas should
be
watertight.
5.
Drainage
for
the
subfloor
space
should
be
provid-
ed.
In
buildings
where
the
computer
room
struc-
tural floor is recessed
and
the
raised
surface
is
on
the
level
of
adjacent
areas,
proper
drainage
must
be
installed
under
the
raised floor as a
precaution
against flooding
or
water
accumulation.
1.6. 4
Computer
Area
Fire Prevention
Equipment
1.
An
early-warning
detection
system
should
be
installed
to
protect
the
computer
and
recorded
media
storage
areas.
It
should
actuate
an
audible
alarm
in
the
computer
room
and
at
a
monitored·
central
station.
2.
Portable
carbon
dioxide fire extinguishers
of
suit-
able size
and
number
should
be
provided
for
use
on
the
electrical
equipment.
3.
Portable,
pressurized
water
extinguishers
should
be
provided
for
ordinary
combustible
material,
such
as
paper.
1-12
IBM 4300 Processors Installation
Manual-Physical
Planning
4.
Extinguishers
should
be
readily accessible
to
indi-
viduals
in
the
area.
Extinguisher
locations
should
be
visibly
marked
overhead.
5.
Where
portable
cylinders
are
used
as
the
primary
extinguishing
agent,
a
standpipe
or
hose
unit
should
be
located
within
effective
range
of
the
computer
areas
(as
a
secondary
or
backup
extin-
guishing
agent).
6.
If
a
Halon
1301
*
(or
equivalent)
gas
room
flood-
ing
system
is installed,
see
NFPA
No.
12A
(or
applicable local
or
national
equivalent).
When
the
room
is occupied,
an
appropriate
time
delay
(from
the
time
of
detection
to
the
time
of
dis-
charge)
should
be
installed
in
conjunction
with
a
manual
override
switch.
The
time
delay
should
be
sufficient
for
the
evacuation
of
all
personnel
from
the
area.
7.
Where
automatic
water
sprinklers
are
required
because
of
building
conditions,
automatic
on/
off
sprinklers
should
be
considered
if
they
satisfy
local fire
protection
codes. This
type
of
system
minimizes
the
quantity
of
water
discharged
that
could
otherwise
cause
additional
damage.
8.
Waste
material
containers
should
be
of
metal
construction
with
a
flame-suppressant
lid.
1.6.5
Data
Storage
1.
Any
data
stored
in
the
computer
room,
whether
in
the
form
of
magnetic
tape,
paper
tape,
cards,
paper
forms,
etc.,
should
be
limited
to
the
mini-
mum
needed
for
safe,
efficient
operation.
When
not
in
use, this
data
media
should
be
stored
in
metal
cabinets
or
fire-resistant
containers.
2.
For
security
purposes
and
for
protection
against
fire, a
separate
storage
room
is
recommended.
The
room
should
be
constructed
of
fire-resistant
material
(minimum
two-hour
fire
resistance
rat-
ing).
The
preferred
type
of
fire
prevention
equip-
ment
is a
sprinkler
system,
or
a gas
room
flooding
system.
1.6.6
Supporting
Facilities
Consider
air
conditioning
and
electrical systems
when
planning
for
safety
and
fire
protection.
1.6.6.1
Air Conditioning
Systems
1.
When
the
computer
area
is supplied
by
a
dedicated air
conditioning
system,
it
should
be
controlled
by
the
room
emergency
power-off
con-
trols.
When
the
regular
building
air
conditioning
sys-
*
Registered
Trademark
of
E.
I.
du
Pont
de
Nemours
&
Co.,
Inc.

\ .
~/
..
•
tern is
used
with
supplemental
units
in
the
com-
puter
area,
the
supplemental units should
be
con-
trolled
by
the
room
emergency
power:<off
switches.
Emergency
power-off
switches for
the
room
should
be
placed
near
the
operator's
console
and
next
to
the
main
exit doors.
2.
Air
ducts serving
other
areas
but
passing
through
the
computer
room
should
have
fusible~link
dam-
pers as prescribed
by
local
code
.
3.
The
air filters should
be
of
noncombustible
or
self-extinguishing material.
1.6.6.2
Electrical Systems
1.
Where
continuity
of
operation
is essential, a
standby
and/
or
buffered
power
source should
be
installed.
2.
An
automatic
battery-operated
lighting system
should
be
installed
in
case
of
power
or
lighting
circuit failure. These units
are
controlled
by
the
lighting circuit.
3.
Watertight
connectors
should
be
used
under
raised floors.
1.6. 7 Preplanning to Continue Operation
in
an Emergency
Continued
operation
depends
on
the
information
stored
on
cards, tapes, disks, drums,
and
so forth,
and
the
on
equipment
used
to
process
the
informa-
tion.
Arrangements
should
be
made
for
emergency
use
of
other
equipment
and
the
transportation
of
personnel,
data,
and
supplies
to
a
temporary
loca-
tion. Duplicates
of
master
records should
be
main-
tained
in a
remote
area.
1.6.8
General Precautions
and
Personnel
Training
1.
The
computer
room, air conditioning
equipment
room,
and
data
storage
room
should
be
monitored
continuously.
2. Plumbing above
the
false ceiling should
be
in-
spected
periodically.
3.
Emergency
exit doors should
be
provided
in
the
computer
area
and
be
clearly identified.
The
number
of
doors
depends
on
the
size
and
location
of
the
area,
and
on
local fire codes.
4.
Personnel
should
be
trained
in
emergency
meas-
ures,'
such
as:
a.
Method
and
sequence
of
shutting
off
all elec-
trical
power
b.
Shutting
off
air
conditioning
systems
c. Calling fire
company
d.
Handling
fire extinguishers
and
small
diameter
fire hoses
e.
Evacuating
records
f.
Evacuating
personnel
g.
Administering first aid.
1.6.9
Additional
Reference
Material
Consult
NFPA
Standard
No. 75,
Protection
of
Elec-
tronic
Computer/Data
Processing
Equipment
(or
applicable local
or
national
equivalent).
1.7 Storage
of
Data Recording Media
This section describes provisions
to
safeguard
data
recording media.
1.7.1 Magnetic Tape
Storage conditions for magnetic
tape
should
be
maintained
within
the
following limits:
Temperature:
4
to
32°C
(40
to
90°F)
Relative Humidity: 20
to
80
percent
with
a maxi-
mum
wet
bulb
temperature
of
27°C
(80°F)
Tape
must
be
conditioned
by
placing
it
in
the
oper-
ating
environment
for
24
hours
before
use.
The
op-
erating
environment
for
tape
is:
Temperature:
16
to
32°C
(60
to
90°F)
Relative Humidity:
20
to
80
percent
with a maxi-
mum
wet
bulb
temperature
of
26°C
(78°F)
The
individual
machine
Specifications pages should
be
reviewed because some units may require special
considerations
and
have
more
or
less restrictive
re-
quirements.
The
tape
should
be
stored
in
a vertical position in a
dustproof
container
and
should
never
come
in
con-
tact
with
magnetic material
at
any
time. Magnetic
fields
of
greater
than
40
A/
cm (50
oersteds)
can
cause loss
of
information
or
introduction
of
noise.
When
shipping magnetic
tape,
each
reel should
be
sealed
in
a plastic
bag
and
packed
individually in a
stiff
cardboard
shipping box.
For
more
detailed handling, storage,
and
operating
information
about
magnetic
tape,
see:
Tape Specifications
for
IBM
One-Half
Inch
Tape Units at: 556, 800,
1600
and
6250
bpi,
Order
No.
GA32-0006
1.7.2
Disk
Pack, Disk Cartridge,
Data
Cell,
and
Data
Modules
Storage
facilities for
these
data
media
should
be
maintained
within
the
following limits:
Preinstallation
Planning
1-13

Disk Pack, Disk Cartridge, and
Data
Module
Storage-
Short-Term Storage
Temperature: 16
to
32°C
(60 to
90°F)
Relative Humidity: 10 to 80 percent
Intermediate-Term Storage
Temperature: 4 to
66°C
(40
to
150°F)
Relative Humidity: 10
to
80
percent
Data Cell Storage-
i::emperature: 10
to
43
°C
(50
to
110°F)
Relative Humidity: 8
to
80
percent
Maximum Wet Bulb:
27°C
(80°F)
Any such med.ia exposed to conditions outside
these limits must be conditioned by placing
them
in
the operating environment for a period equivalent
to
the exposure.
(It
is
not
necessary
to
condition these
media for more
than
two hours.)
These media have dustproof covers which should
be left in place, except when installed in the drive.
Storage should be in fire-resistant cabinets away
from magnetic fields. Magnetic fields
of
greater
than
40
A/cm
(50 oersteds), or
20
A/cm
(25 oersteds)
for 3348
Data
Module Model 70F,
can
cause loss
of
information
or
introduction
of
noise.
Additional information concerning handling, oper-
ation, device dimensions, flammability characteris-
tics, shipping requirements,
and
housekeeping is in:
IBM
Disk
Pack and Cartridge Handling and
Operating Procedures,
GA26-5756
IBM
Data Cell Handling Guide,
GA26-3633
•
IBM
Data Module Handling and Operating
Procedures, GA26-1625.
J.
7. 3
Data
Cartridge
The
data
cartridge
is
normally stored within
the
IBM
3851
Mass Storage Facility. Storage conditions
at
the 3851 air input,
or
in
supplemental
(nonoperating) storage areas, should
be
maintained
within the:following limits:
Temperature: 4
to
32°C
(40
to
90°F)
Relative Humidity; 8
to
80
percent
Maximum Wet Bulb:
21°C
(70°F)
Exposure of
the
cartridge
to
elevated temperatures
for extensive periods
can
cause physical deformation
of
the
medium. Exposure of the cartridge
to
temper-
atures
between
32
and
49°C
(90
and
120°F),
below
l6°C
(60°F),
or
to
other
conditions outside the
above limits necessitates conditioning before use.
This medium exposed
to
conditions outside these
limits must be conditioned by placing
it
in
the
oper-
1-14
IBM
4300
Processors Installation Manual-Physical Planning
ating environment for a period equivalent
to
the
exposure.
(It
is
not
necessary
to
condition this me.di-
um for more
than
24
hours.)
Your storage facilities should be fire-resistant
en-
closures located away from magnetic fields. Magnet-
ic fields of greater
than
24A/cm
(30
oersteds)
can
cause loss
of
data
or
introduction
of
noise.
Additional information concerning handling, oper-
ation, device dimensions, flammability characteris-
tics, shipping requirements,
and
housekeeping is in
the
Component Description publications for
data
cartridge devices,
and
in:
•
IBM
Disk
Pack and Cartridge Handling
Procedures,
Order
No.
GA26-5756
1.8 Channel Priority
Performance
can
usually
be
improved by prioritizing ·
channel
attached
input/
output
equipment.
Channel
priority is beyond
the
scope of this manual.
It
is
mentioned as a reminder
that
this important task
must be addressed together with
other
physical plan-
ning considerations. Consult your IBM representa-
tive.
1.9
Cables
IBM supplies
the
necessary cables for
the
initial in-
stallation as shown
on
the
"Specifications" pages.
Cables must
be
ordered by starting
at
the
unit
most
remote from
the
processor. Cables are
then
specified
from unit-to-unit,
back
to
the
processor.
The
proper
sequence must
be
observed
to
ensure receiving the
proper length cables. Because cables are custom-
made
to
the
lengths required,
they
must
be
measured
in accordance with
the
approved layout.
The
group
number,
and
channel where required, along with
the
required cable length must be submitted for
each
cable in
the
equipment layout. The required cable
length is defined as
the
center-to-center
distance
between
unit
cable
entry
holes measured along
the
intended
route
of
the cable as projected
on
the
floor
or
other
mounting surface.
When
units are mounted
on
a raised floor, twice
the
height
of
the
raised floor should
be
included
in
the
required cable length. IBM makes allowance for
the
portion of
each
cable
that
is from
the
floor
or
mounting surface into
the
unit.
For
the
best electri-
cal design
and
computer performance, all cable
lengths should
be
kept
as short as possible.
External
interconnecting cables should
be
installed
under
the
raised floor. Where a raised floor is
not
used, cables
should
be
protected from mechanical damage,
and
installed in a
manner
that
does
not
present a safety
hazard.
..
:!)
.
/

..
•
•
Requests for cables
that
exceed
the
maximum
lengths specified for
the
equipment must be ap-
proved
by
IBM
and
may result
in
extra
charges. See
section 1.1 "Scheduling
the
Installation" for timing
considerations regarding cable ordering.
When
a unit requires external cables which must
be
installed through walls
and/
or floors,
the
ordering
and
installation arrangements should
be
made with
sufficient lead time
to
permit
the
cable facilities to
be available to
the
computer equipment
at
installa-
tion time. This pertains
to
such units as display sta-
tions
and
communication devices.
1.
9.1
Cables
Related
to
Initial
Installa-
tions
One
cable or
one
cable group within
standard
speci-
fications
in
accordance with
an
approved layout
(required
to
install units being delivered from IBM)
is
supplied
by
IBM
at
no
charge, unless non-IBM
supplied or a chargeable basis is indicated. Orders
for cables which are
not
within
the
standard
specifi-
cations must be approved by IBM,
and
may be sub-
ject
to
an
additional charge.
Changes
in
cable-order
specifications requested
within
three
months
of
the
scheduled shipment
date
(or
as
the
result
of
any
non-IBM-caused
deferment)
may
be
subject
to
charge.
If
cables (of
the
type pro-
vided
at
no
charge for
an
initial installation) are
changed
to
accommodate
the
installation of addi-
tional IBM units, these cables are supplied by IBM
at
no
charge.
An
explanation of why
the
cables are
required must accompany
the
cable order. All
re-
placed IBM cables must be
returned
to
IBM.
1.9.2
Other
Cable
Requests
Cables requested for
other
reasons
(for
example,
additional or replacement cables for
rearrangement
not
caused by installation
of
units being delivered
from IBM,
and
cables
to
connect
IBM
and
non-IBM
equipment) may
be
subject
to
an
additional charge.
1.10
Customer Engineering Support
Facilities
The
need
for a service area
and
for on-site
test
equipment must be negotiated
between
you
and
the
local IBM
Branch
Office. These facilities vary ac-
cording
to
the
size of
the
complete IBM installation
and
the
number
of IBM service personnel required.
IBM will provide a scaled layout
to
assist in locat-
ing
the
equipment, receptacles, lights,
and
so
forth
in
the
service area. This area should
contain
a conven-
ience outlet (which should
not
be powered from
the
computer power panel).
The
IBM
Physical Planning Template: Field Engi-
neering Furniture
and
Test Equipment,
GX22-6925,
is
available
to
assist
in
planning this space.
1.11 Remote Support Facility
The optional Remote Support Facility
(RSF),
ena-
bled only with customer authorization, provides a
means of controlling
the
4300
Processors from a
remote location for maintenance purposes.
If
this facility
is
to
be installed, it
is
the customer's
responsibility
to
provide a 1200-bit-per-second,
binary synchronous coded, manual answer, switched
network line
and
a telephone handset.
In
Canada
and
the
United States, a telephone with
Data
Access
Arrangement
(DAA)
CDT
coupler
series
lOOOA
(or equivalent), with the appropriate
plug
and
socket,
is
required. Outside
the
United
States
and
Canada,
the connection of this feature
differs for each country.
A
10-meter
(33-foot),
fixed-length interface cable
(7.6 m [25 ft] useable length)
is
shipped with the
processor.
For
convenience, the RSF telephone
handset
should be installed adjacent to the display
console. See your IBM representative for more in-
formation.
1.12
Standard Shipping Dimensions
and Environmental Specifications
Unless otherwise noted on individual "Specifica-
tions" pages:
1. All IBM units
can
be reduced to at least
750
x 1525 millimeters (29.5 x 60 inches) for
shipment.
2. The following shipping and environmental speci-
fications apply:
Temperature:
-40
to
60°C
(-40
to
140°F)
Relative Humidity: 5
to
100 percent
(no
con-
densation or rain)
Wet Bulb Range:
1to29°C
(33 to
85°F)
1.13
Metric Conversions
Values expressed in metric
notation
use a space to
separate hundreds from thousands, thousands from
millions, etc.,
and
a period
to
separate whole num-
bers from decimal fractions.
For
example, two thou-
sand
one
hundred
kilograms
is
expressed as
2 100 kg,
and
one-half kilogram
is
0.5 kg.
In
this manual, English units converted into metric
units are
rounded
to
the
nearest whole number or to
the
nearest decimal place given. Exceptions are kilo-
grams (kg), cubic meters per minute (m
3
/min),
kilo-
grams per square
meter(kg/m
2}
pertaining
to
floor
P:remstallation
Planning
1-15

loading, and meters
(m)
pertaining
to
altitude.
These are
rounded
according to
the"
1/10/50"
rule:
1.
A number less
than
100
is
rounded
up to
the
next
whole unit; for example,
23.2
becomes 24.
2. A number
greater
than
100
and
less
than
1
000
is
rounded
up to
the
next
ten;
for example, 163
becomes 170.
3. A number
greater
than
1
000
is
rounded
up
to
the next 50;
that
is, l 218 becomes 1 250.
In Plan Views:
C><I
Cable
Entry
and
Exit
Area in
Base
of
Machine.
See
Note
2.
Power Cord
Exit
Swinging Gate
I
Standard
Equipment
Outline
Shows machine
with
covers closed.
r---
Optional
Equipment
Outline
In
C~bling
Schematics:
~
~
Indicates Cable
Group
from
a Machine
504
Notes:
503 Indicates Cable
Group
to
a Machine
1.
Power
cords are
supplied
in
4.3
m
(14-foot)
lengths unless
otherwise
noted
on
the
specifi-
cation
page. The length is measured
from
the
symbolffi.
2. Unless
otherwise
noted,
locating
dimensions
are measured
from
edge
of
frame,
not
cover.
Figure
1-3.
Standard
Symbols
...
1.15 Abbreviations
and
Definitions
A
ac
A/cm
ampere
alternating
current
amperes
per
centimeter
1-16
IBM
4300
Processors Installation Manual-Physical
Planning
1.14 Symbols used in Plan Views
Figure 1-3 shows
the
standard
symbols used
in
plan
views.
Frame
numbers are shown circled
on
plan
views
and
schematics.
Service Area
Boundary.
----
Service clearances are measured
from
machine
with
covers closed.
+
Casters
See
Note
2
Leveling
Pads
or
Glides
0
Typical
Diameter:
89
mm,
(3-Y,
in).
See
Note
2.
D
Lem;
_J_
Nonraised
Floor
Cable
Exit
Hinged Covers
C-
Single
p_
Bi
fold
~
Offset
Bifold
ADU
ambient
ASHRAE
automatic
dialing
unit
surrounding
AWG
blk mpxr
American
Society
of
Heating,
Refrigeration
and
Air
Conditioning
Engineers
American
wire
gauge
block
multiplexer
~.
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