CAT Vision Extended
Catalog 565-2
Vision™Air Handler—Extended Sizes
Models CAC/CAH 107G – 169G
Sizes 107 to 169
MEA
342-99-E
Engineered for flexibility and performance™
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Air Handler Selection . . . . . . . . . . . . . . . . . . . . . . . . 19
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Selecting Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
ARI Certification . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Selecting Accessories . . . . . . . . . . . . . . . . . . . . . . 19
Agency Listed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Selecting Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
The Vision Air Handler Advantage . . . . . . . . . . . . . . 4
Quick Select Table . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Flexibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Application Considerations . . . . . . . . . . . . . . . . . . . 21
Indoor Air Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation Flexibility . . . . . . . . . . . . . . . . . . . . . . . 21
Operating Efficiency . . . . . . . . . . . . . . . . . . . . . . . . . 5
Mounting and Access . . . . . . . . . . . . . . . . . . . . . . . 21
Easy, Low Cost Installation . . . . . . . . . . . . . . . . . . . . 5
Ductwork . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Easy Maintenance and Serviceability . . . . . . . . . . . . 5
Piping and Drain Pan Traps . . . . . . . . . . . . . . . . . . 22
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Vibration Isolation . . . . . . . . . . . . . . . . . . . . . . . . . 22
Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Sound . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Flexibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Air Supply Systems and Fan Laws . . . . . . . . . . . . 22
Cabinet Construction . . . . . . . . . . . . . . . . . . . . . . . . . 6
Fan and Motor Heat . . . . . . . . . . . . . . . . . . . . . . . . 23
Access and Serviceability 7 . . . . . . . . . . . . . . . . . . . . .
Variable Frequency Drives . . . . . . . . . . . . . . . . . . . 24
Vision SelectTools™ Software Selection Program . . 7
Engineering and Physical Data . . . . . . . . . . . . . . . . 25
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . 8
Component and Section Weights . . . . . . . . . . . . . 33
Vision Unique Standard Features . . . . . . . . . . . . . . . 8
Fan Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Component Types . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Coil Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Side Load Filter Data . . . . . . . . . . . . . . . . . . . . . . . 38
Vision Plus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Coils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
107 Extended Size Air Handling Unit . . . . . . . . . . . 39
Technical Data Sheet . . . . . . . . . . . . . . . . . . . . . . . 39
What is the MERV Rating? . . . . . . . . . . . . . . . . . . . 16
Unit Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Ultraviolet Light Options . . . . . . . . . . . . . . . . . . . . . 16
Fan Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Fax Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Mixing Boxes and Economizers . . . . . . . . . . . . . . . 16
Face and Bypass Dampers . . . . . . . . . . . . . . . . . . . 16
160 Extended Size Air Handling Unit . . . . . . . . . . . 48
Technical Data Sheet . . . . . . . . . . . . . . . . . . . . . . . 48
Blenders/Air Mixers . . . . . . . . . . . . . . . . . . . . . . . . . 17
Unit Drawings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Attenuators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Fan Curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
Digital Ready™ Air Handlers . . . . . . . . . . . . . . . . . 18
Fax Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Starters and VFDs . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Electrical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Supply Power Wiring . . . . . . . . . . . . . . . . . . . . . . . 59
Engineering Guide Specification . . . . . . . . . . . . . . 60
PART 1: GENERAL . . . . . . . . . . . . . . . . . . . . . . . . 60
PART 2: PRODUCTS . . . . . . . . . . . . . . . . . . . . . . 61
PART 3: EXECUTION . . . . . . . . . . . . . . . . . . . . . . 70
2
McQuay Cat 565-2
Introduction
Introduction
Nomenclature
Figure 1: Nomenclature
CAH 169
G D A C
Model
CAH = Custom modular air handler
CAC = Custom modular component
Nominal unit size
(nominal square foot of coil)
107, 124, 141, 160, 169
Unit cross section
C = Standard unit cross section
M = Custom size cross section
Motor location
A =Motor along side of fan housing
D=Motor downstream of belt drive plenum fan
G=Motor downstream of direct drive plenum fan
Vintage of McQuay air handling unit
Unit type/coil position
B = Blow-through cooling coil location
D = Draw-through cooling coil location
H = Heating only
V = Vent only
ARI Certification
certification program, which is based on ARI Standard 430.
Certified in accordance with the
forced circulation air cooling and
air heating coils certification
program, which is based on ARI
Standard 410.
Standard and custom size units
certified in accordance with the
central station air handling units
McQuay Cat 565-2
Note – Ratings at other than wide open position of the inlet
vanes are outside the scope of ARI Standard 430.
Agency Listed
All standard units
All custom size units
All Canadian units
MEA
342-99-E
3
Introduction
The Vision Air Handler Advantage
Flexibility
Vision unique design
What it can do for you
Custom-modular platform
Allows customizing of the system with a wide selection of components
and sizes.
Variable DimensioningTM design
Allows cabinet to be sized in two-inch increments (height) and four-inch
increments (width) to meet installation or aesthetic requirements.
Multiple coil, fan and filter selections
Allows optimum selections for cost, energy efficiency, performance,
indoor air quality, and low noise.
Wide selection of base rail heights (8" to 12")
Allows for condensate trapping, eliminates need for costly
housekeeping pad, and provides space required between condensate
connection and traps on steam applications.
Painted cabinet
Enhances exterior appearance for units in visible locations.
Indoor Air Quality
Vision unique design
What it can do for you
Low-leakage cabinet construction
Standard Cabinet: less than 0.5 CFM/ft2 of cabinetry at
-6" to +5" positive w.c.
Minimizes air leakage, noise and unfiltered air.
Vision Plus Cabinet: less than Class 6 leakage up to + / 8" w.c.
Double sloped microbial-resistant coated galvanized
(standard) or stainless steel drain pan
Inhibits bacterial growth; eliminates standing water that can
support bacteria.
Double-wall, foam injected construction
Eliminates fiberglass fibers eroding into the air stream.
Multiple filter types (flat, bag and cartridge) with side-load Gives full range of filter efficiencies, final filter arrangements, and filter
and front-load capabilities
section depth flexibility.
Hinged access doors with full-grip handles
Allows for easy inspection and cleaning of drain pans; promotes
regular inspections.
Patented splice collar
Prevents unfiltered, unconditioned air from entering the system. Allows
for leak-resistant section to section joining in the field.
Easy-to-remove access panels
Allows for easy inspection and cleaning of drain pans; promotes regular
inspections.
4
McQuay Cat 565-2
Introduction
Operating Efficiency
Vision unique design
What it can do for you
The Vision Plus low air-leakage cabinet design, all inside
and outside panel penetrations are sealed
Increases operating efficiency; reduces energy loss and operating
costs.
Patented gasketed frame channels
Minimizes direct exposure of metal to metal in cabinet framework to
reduce cold bridging and condensate collection; lowers operating costs.
Fan selection options (housed airfoil, belt drive, direct drive
Results in lowest possible BHP requirements.
plenum, dual fan or fan array)
Patented UltraSealTM low-leak dampers
Maximizes operating efficiency; reduces operating cost.
Double wall liners with injected foam insulation
R-13 insulation value reduces condensation and improves operating
efficiency.
Easy, Low Cost Installation
Vision unique design
What it can do for you
Complete disassembly
Allows for complete knock down during installation if required for tight fit
applications.
Patented section splicing
Saves installation time; creates an airtight environment.
Extended coil connections with gasketed airseal, external Eliminates need to remove panels for connection during installation;
drains and vents
preserves air-tight environment; saves time and cost.
Bolted frame construction with removable
panels
Provides complete accessibility to unit components.
Fan system factory tested and balanced
Saves time during installation and promotes proper operation.
Discharge or inlet plenum sections
Adapts easily to ductwork and provides a turning section for
stacked components.
Easy Maintenance and Serviceability
Vision unique design
What it can do for you
Direct-drive plenum fans
No fan bearings, belts or drives to replace or maintain
Removable cross-member frame
channels
Allows for top or side coil removal without disrupting unit integrity.
Extended fan bearing copper lube lines
Makes lubricating fan system easier.
Extended coil drain connections
Reduces coil venting time; helps coil condensate drain completely.
Hinged access doors with full-grip handles
Allows for proper inspection.
McQuay Cat 565-2
5
Introduction
Introduction
Quality
McQuay air handling equipment has been respected and
regarded as high quality for nearly 60 years. McQuay has
taken a major step in redefining the indoor air handler with the
Vision air handler. Demands for improved indoor air quality,
low sound, high operating efficiency and smaller mechanical
rooms require a better product for today’s air handler market.
The McQuay Vision air handler is designed to meet or exceed
these demands.
money. Patented splice joints (Figure 4) help guide sections
together for a tight fit, saving additional time and money on
installation. Splice joints are also fully insulated at the factory.
Figure 2: Patented Gasketed Frame Channel
The key to providing such a high quality product is in the basic
design. The McQuay Vision air handler's patented construction
provides unequaled thermal efficiencies and low leak rates. In
addition, Vision air handlers offer tremendous flexibility in
sizing, component options, and unit arrangements to meet the
indoor air quality, operating efficiency, sound and installation
requirements for today’s extensive commercial and custom
markets.
Flexibility
By virtue of its unique frame design, the McQuay Vision air
handler offers tremendous flexibility. This flexibility is
reflected in our unique Variable Dimensioning™ feature that
allows units to be sized in two-inch increments (in height) and
four-inch increments (in width) to fit the available space.
Numerous section and component options, and the ability to
arrange components in whatever arrangement is required,
allow Vision air handlers to be customized to the requirements
of each job, without expensive field modifications. Finally,
Vision air handlers can be shipped as a completely assembled
unit, in modules or by component sections for new or retrofit
applications that require smaller sections for passage through
the building.
Cabinet Construction
McQuay Vision air handler cabinetry consists of a box-type
frame channel—the backbone of the unit—and easy-to-remove
panels or hinged access doors. The unique, patented frame
channel design allows three identical pieces to be bolted
together to form a corner of the unit. Channel material is G90
unpainted galvanized steel (optional—painted G60 galvanized
steel) with neoprene gasketing on all flanges to minimize
leakage. Gasketing is also factory applied at all contact
surfaces between interior and exterior metal components to
minimize thermal bridging. See Figure 2.
Panels are secured to the unit with fasteners that can be easily
removed to access the unit interior. The frame channel and
panels are easily disassembled and reassembled, giving
contractors tremendous flexibility in installing and servicing
the units—even where space is limited—saving time and
6
Standard Cabinet
This unique cabinet design results in air tight, thermally
efficient units, which translates into energy savings over the
life of the unit. Vision air handlers are capable of leakage rates
less than 0.5 CFM per square foot of cabinetry at -6" to +5"
positive w.c. Units will not sweat when exposed to interior air
temperatures down to 50°F, and exterior room conditions up
to 70% relative humidity.
Vision Plus Cabinet
The Vision Plus construction utilizes laser welding technology
to provide stronger frame channels and new gaskets to reduce
the standard leakage rate to ASHRAE III Class 6 or 0.232
CFM per square foot at + / - 8" w.c. The Vision Plus
construction maintains the unique flexibility, ease of
installation and serviceability that Vision has had for years
while providing best-in-class air sealing. This solution is an
“out of the box”, no caulk required installation to keep
installation costs to a minimum.
ASHRAE 111 is the test standard to test duct leakage. The
standard uses a class system to indicate relative leakage rates.
These class levels are dependent on static pressure and surface
area. The formula for leak class is:
CL =
where
F=
Leakage in CFM
100 ft2 Cabinet Surface Area
F
P 0.65
and
P = Static pressure in inches w.c.
Using this standard will give the most accurate rating for how
the unit selected will perform.
McQuay Cat 565-2
Introduction
The ASHRAE 111 Class 6 rating can provide leakage rates
below 1% of the supply air volume in many instances. For
example, the chart below shows a typical size 065 air handler
providing 35,000 CFM with mixing box, combination filters,
hot and chilled water coils, fan, and plenum section.
Figure 3: Vision Plus Leakage Comparision
Access and Serviceability
Equipment must be designed to perform efficiently and withstand
the wear and tear of everyday use. It must be designed to provide
easy access to interior components for routine maintenance and
service to maintain peak performance. The patented frame
channels and easy-to-remove panels or hinged access doors of the
Vision air handler cabinet provide complete access to the unit
interior and components. Components, including the fan and coil
assembly, can be removed through the side of the unit, top of the
unit, or a combination of both, which reduces required service
clearances (Figures 5). Coil removal does not require access to the
non-connection end of the coil. A unique coil tie down method
simplifies coil removal and replacement.
Figure 5: Panel/Channel Removal for Access
To prove this construction works, full unit factory witness
testing will be available for purchase.
Vision air handler panels use the latest technology to provide
the lowest deflection, lightest weight and most importantly, the
most thermally efficient 2-inch thick panel system available.
R-13 insulation quality injected-foam is thermally pressed
between inner and outer liners yielding an extremely rigid
panel. The inner liner comes standard with galvanized steel or
optional stainless steel. The outer liner standard is galvanized
steel with options of pre-painted, or pre-painted heavy-gauge,
galvanized steel.
Base rails are provided, ranging from 8" to 12" and can
eliminate the need for a housekeeping pad—saving time and
money on installation. A full perimeter base rail per shipping
section is factory assembled.
Figure 4: Patented Splice Joint for Section-to-Section
Joining
McQuay Cat 565-2
Vision SelectTools™ Software
Selection Program
Because the McQuay Vision air handler is so flexible and has
so many different component types, there virtually are an
infinite number of possible unit arrangements. To help the
customer easily define their product requirements, McQuay
provides a user-friendly software selection program, called
Vision SelectTools. This program configures and sizes both
standard and custom units. Components can be selected in
minutes. This Windows® based program leads the user through
the selection process by prompting for pertinent input data for
all components required. Component sections are selected by
placing them on a configuration screen. Once the unit layout is
defined, the options and accessories are identified. The
program gives immediate feedback regarding fan and coil
selection, offering a choice of many different options based on
the performance inputs. Once final component selections have
been made, the program provides all output needed for
specification and submittal purposes, including fan curves, coil
performance psychometric charts, weights, dimensional
drawings, and a unit specification.A fully detailed.DXF file is
also available. Vision SelectTools is a comprehensive, efficient
and user-friendly software selection program (see “Technical
Data” on page 39 for examples of the output).
7
Features and Benefits
Features and Benefits
Vision Unique Standard Features
Extended Coil Connections
• Reduces installation costs
Patented UltraSeal™ Low-Leak Dampers
• Reduces maintenance time
• Help maximize operating efficiency
• Aids proper drainage
• Reduces operating cost
• Grommet seal reduces leakage
Rugged Cabinet Enclosure
• Rigid, thermal efficient (R-13)
injected-foam panels are strong
and lightweight
Smooth Interior Surface
• Promotes longer unit life
• Reduces dirt accumulation
• Facilitates cleaning
• Helps improve IAQ
Gasketed Frame Channel
• Eliminates metal-to-metal contact
between paneling and framework
• Minimizes cabinet condensate
and corrosion
• Facilitates top and side
component removal
• Promotes long life
8
McQuay Cat 565-2
Features and Benefits
Custom-Modular design
• Allows custom selection and
configuration of components
• Allows design of system to
meet space and performance
requirements
Frame Channel Disassembly
Patented Splice Collar
• Allows two-sided access.
• Reduces installation cost
• Easier, faster service and maintenance
• Creates an airtight environment
Visible Double-Sloped
Drain Pan
• Makes inspection and
cleaning easier
Variable Height Base Rails (8" to 12")
• Eliminates costly housekeeping pad
• Allows for condensate trapping
• Helps improves IAQ
McQuay Cat 565-2
9
Features and Benefits
Customized Options:
• Variable Dimensioning™ feature for flexible cabinet sizing
on 2" increments (height) and 4" increments (width)
• Galvanized or painted cabinet
• Multiple section depths
• Variable base rail heights (8" to 12")
• Various casing and drain pan materials
• Mixing boxes/economizers
• Sound attenuators
• Integral face and bypass dampers
• Blenders and air mixers
• Multiple coil section depths
• Multiple fan selections including airfoil and belt, direct drive
plenum fans, fan array or dual belt drive plenum
• Dual and triple plenum fans
Fan Options
• Filters (flat, bag and cartridge) available in side load and/or
front-loading configuration
• Gas-phase filtration
• Flush-mounted filter gauges
• Starters and inverters (VFDs)
• Disconnect switches
• Ultra-violet lights
• Inward opening doors
• Windows, doors, marine lights and receptacles
• Manual selections to accommodate special components
• Flexibility in shipping arrangements
• Digital Ready™ control components
• Humidifier manifold
Filter Options
Blender/Air Mixer Options
Filter Gauges
10
McQuay Cat 565-2
INTERNAL
HORIZ
HEATING
LARGE
CLG. / HTG.
COMBINATION
AF FAN
HORIZ
CARTRIDGE
AT
TE
N
U
AT
PL
O
EN
R
U
M
D
IF
FU
SE
R
C
BL OIL
O
W
TH
R
AC
U
C
ES
S
FI
LT
ER
S
FA UP
N PL
Y
H
C OR
O IZ
IL O
AC
C
ES
S
IL
C
O
N
TA
L
R
AM
PE
BP
&
F
2" & 4"
FLAT
PLENUM FAN
D
FI
LT
ER
BL
EN
D
ER
IZ
ER
M
N
O
EC
O
R
EX ET
H UR
AU N
ST /
Features and Benefits
DISCHARGE
PLENUM
9"
MIN
AF FAN
INLET PLENUM
MIXING
BOX
CARTRIDGE
INTEGRAL
EXTERNAL
McQuay Cat 565-2
MEDIUM
SMALL
CLG.
10 ROW
PLENUM FAN
CLG.
OR
HTG.
BAG
4 ROW
BAG
RIGHT
ANGLE
Sound Attenuators
1 & 2 ROW
STEAM
AND
1 - 4 ROW
WATER
COIL
MFA COIL
F & BP
Marine Lights and Accessories
11
Component Types
Component Types
Fans
Fan types available with the McQuay Vision air handling units
are housed double width, double inlet (DWDI) forward curved
and airfoil fans, plenum fans, inline fans, twin fans and fan
array. Forward curved fans generally provide the lowest first
cost option and are used for lower static pressure applications.
Table 1: Belt-drive Dual Fan Width Requirements
Dual Fan Miniumum
Cabinet Width (in.)
Minumum Standard Unit
Cabinet Size
27
148
107
30
156
107
DWDI Housed Fans
33
176
124-141
McQuay housed forward curved fans will typically operate up
to 6.0" of static pressure. Airfoil fans have a higher first cost,
but are more efficient, quieter and can handle higher static
pressures. McQuay housed airfoil fans will operate up to 9.0"
of static pressure.
36
184
124-141
Plenum Fans
Plenum fans (Figure 6) save space by eliminating turns in
ductwork. They also provide a high degree of flexibility when
locating the outlet ductwork. Plenum fans are also very good
for blow-through applications as they generate a uniform
outlet velocity profile. Both belt drive and direct drive plenum
fans are available.
Direct drive plenum fans offer easier maintenance as they do
not have fan bearings, sheaves, or belts.
Dual Fans
Direct drive plenum fans come with the optional dual
arrangement. The multi-fan sets will provide more even air
flow and redundancy if one fan should need servicing.
Figure 6: Plenum Fan
Fan Size
40
196
160
44
212
160
49
224
169
Table 2: Direct-drive Dual Fan Width Requirements
Direct-drive
Plenum Fan Size
Dual Fan Miniumum
Cabinet Width (in.)
Minumum Standard
Unit Cabinet Size
40
152
107
44
164
107
For redundancy, the rule of thumb is that one fan will provide
approximately 65% of the total CFM provided by both fans if
the remaining fan is not sped up. If more redundancy is
required, then a VFD and larger motor can be used to speed up
the single fan to achieve more airflow. The selection software
will calculate the redundancy If a manual calculation is
required to calculate the maximum available airflow from the
single fan, manually plot the single fan performance onto the
dual fan curve as in See Figure 7. Extend the single fan rpm
line to intersect with the system static pressure line. This
balance point shows the performance of a single fan when one
fails.
If a VFD is used, the fan can be sped up to the limit of the HP
of the motor to get more airflow. To increase redundancy, a
larger motor can be selected. Remember that over sized fan
motors may be less efficient. This typically occurs below 5060% design bhp. If you over size the motor to increase
redundancy, as the motor BHP drops farther away from the
actual HP, the motor will run less and less efficiently. So, if the
application is meant for dual fans, it may be best to simply use
the best selection for efficiency and utilize what redundancy
comes with this selection. This will ensure the customer will
have the most efficient operating setup while having the
insurance of good redundancy.
The width of the fans will determine which cabinets will allow
certain fans. Table 1 & 2 will help by showing what minimum
cabinet width and unit size you will need for specific fan
diameter selections.
An optional motor removal gantry system is available for the
Dual Plenum Fan and Fan Array options. The gantry option
provides easier serviceability of motors if access is not
available on both sides of the fan section.
12
McQuay Cat 565-2
Component Types
Figure 7: Dual Fan Redundancy – 65% if one fan fails
Fan Array
The fan array section will decrease the fan section length by
using multiple smaller direct drive fans. With the stacked
array, the fans will also provide a more even airflow pattern
throughout the unit and will allow the fans to be placed closer
to the coil. In addition, the multiple fans provide redundancy.
If one fan needs to be serviced, there can be up to five other
fans to back it up. All fans in the fan array are direct drive and
offer more efficient performance with no belt losses and no
required shaft bearing maintenance.
The different types of fans are available in numerous wheel
diameters per unit size. The fan size selection is always
optimized and identified by the SelectTools software. The
program considers performance, efficiency, sound generation
and first cost and offers a number of fan sizes to select from.
Fan and motor assemblies are provided with 2" spring
isolators. All fans are dynamically balanced at the plant as an
assembly, including the motors and drives.
lubrication lines that are extended to the access side of the fan
cabinet with the grease fittings located near the access door
opening.
All fan motors are internally mounted. The appropriate motor
size will be selected by the SelectTools software. Motors
cannot be undersized, but may be oversized if desired. Motor
options include open drip proof, totally enclosed fan cooled,
1 speed/1 winding, 2 speed/1 winding, and 2 speed/2 winding.
Motor efficiencies available include standard efficiency, high
efficiency, and premium efficiency, depending on the motor
type.
Figure 8: Spring Isolation
All belt drive fans rotate on a solid steel shaft of uniform
diameter that has been ground, polished, and coated with a rust
inhibitor. Fan shafts are selected to have a maximum operating
speed well below the first critical speed. Belt guards are
available.
The fan bearings have a minimum L50 life of 200,000 hours,
and are available as high as one million hours. Bearings are
selected for minimum noise levels and minimal service.
Bearings are self aligning and pre-lubricated for immediate
use. Bearings are mounted on rigid frames and positioned to
provide proper balance. All bearings include copper
McQuay Cat 565-2
13
Component Types
Coils
The McQuay Vision air handler offers broad application
flexibility in coil sections and coils. Coils can be arranged in
draw-through or blow-through configurations. Heating only,
cooling only, or cooling and heating sections are available. All
coils are installed with space between each coil to allow access
for cleaning and mounting of controls.
Cooling coil sections, and cooling and heating coil sections,
are available in seven different section lengths to
accommodate every application requirement. Drain pans are
center split with drain connections on each side. For drain
connections (same end connections also available), field
piping can be run under the unit, between the base rails.
Removable access panels or doors may be provided in the
deeper sections that will not interfere with piping connections
extending through the unit side panels.
All cooling coils are mounted over a double sloped drain pan.
The cooling coil rests on coil supports located over the drain
pan. The drain pan extends beyond the leaving side of the coil
to help recover condensate. The primary drain pan also
extends under the coil headers and return bends to help remove
condensate from the unit. A full thickness of insulation is
always provided between the drain pan and the bottom outer
panel. The drain pan is sloped in two planes to promote proper
condensate removal. The galvanized drain pan is coated with
an antimicrobial treatment as standard to further inhibit the
growth of algae and fungi. A stainless steel drain pan is also
available as an option.
Coils are available in two face area sizes, including medium
and large.
With McQuay being a major manufacturer of heat transfer
coils, the coil options are virtually unlimited. The McQuay
contractor coil line has several coil types, ranging from hot and
cold water, refrigerant and steam. Standard McQuay coils are
ARI certified. In addition to a broad range of circuitings, fin
spacing and row depths, coils can be constructed of different
material types for fins, tubes, connections, and casings. This
provides the ability to specify a coil to meet the application
requirements.
For more information on McQuay coils, consult the following
catalogs:
Cooling—water/refrigerant.................................... Catalog 411
Heating—water/booster......................................... Catalog 412
Steam—standard/distributing ............................... Catalog 413
Figure 9: Coil Connections, Vents, Drains, and Drain Pan
Connection, Extend Through Unit Cabinetry
Coil connections are grommet sealed inside and outside to
ensure low cabinet leakage, and the connections always extend
through the unit cabinetry, allowing for the easy connection of
valves and piping (Figure 9). Water coil vents and drains are
located outside the cabinetry.
14
McQuay Cat 565-2
Component Types
Filters
The McQuay Vision air handler is designed to house flat,
angular, bag, or cartridge filters. These media types range in
efficiencies up to 95% and MERV 15. (See page 16 for a
description of the MERV Rating.) In addition to offering a full
range of efficiencies, the filter media can be provided with an
optional antimicrobial treatment. Antimicrobial treatments are
highly recommended for a complete filtration system.
Both bag and cartridge filters have a pre-filter and can be either
side load or front load. An access door is provided on either
side or both sides of the unit to access the filter section. Filters
can be positioned any place in the unit, and as many filter
sections as required can be used. Many health and food
industries require stringent filtration. Often, a filter section
must be the last component in the air stream.
An optional filter pressure gauge may be ordered with each
filter section to help promote regular servicing and prevent
clogging.
The McQuay Vision air handler meets these requirements by
providing a filter section located as the last component in the
air stream, and with full sheet metal liners.
Figure 10: Filter Particle Size Chart (in microns)
0.01
0.1
0.3
1
10
30
3
100
1000
10000
1 Filters of average
efficiency
2 Filters of high
efficiency
3 Filters of very high
efficiency
4 Activated carbon
filters
1
2
3
4
Figure 11: Pollutant Particle Size Chart (in microns)
0.01
0.1
1
10
3
0.3
1
100
1000
30
2
3
6
4
5
7
8
9
10
11
13
12
14
15
16
19
17
20
10000
18
1 Smog
2 Haze
3 Mist
4 Drizzle
5 Rain
6 Oil fire smoke
7 Fly-ashes
8 Tobacco smoke
9 Ashes
10 Metallic dust
11 Soot
12 Cement dust
13 Gas molecules
14 Pigments
15 Pollen
16 Suspended dust
17 Precipitating dust
18 Heavy industrial dust
19 Viruses
20 Bacteria
21 Hair
22 Lung damaging dust
21
22
McQuay Cat 565-2
15
Component Types
What is the MERV Rating?
Ultraviolet Light Options
Minimum Efficiency Reporting Value (MERV)—ASHRAE
Standard 52.2-1999 entitled “Method of Testing General
Ventilation Air-Cleaning Devices for Removal by Particle
Size” provides a methodology for determining filter efficiency
at removing various sizes of particles (see Figure 11) as the
filters become loaded. There are three ranges of particle sizes
that define the MERV value:
Vision air handlers can be factory equipped with ultraviolet
(UV) light options that are pre-engineered for placement to
provide maximum effectiveness. Two UV light options are
available. The first can be mounted on the downstream side of
all cooling coils and above the unit drain pan for surface “kill”
applications to comply with the GSA Facilities Standard for
federal buildings. The second can be mounted in the air stream
prior to filter(s) for “kill on the fly” applications. Both
applications are agency approved to UL Category Code
ABQK specification, HVAC Accessories, Air Duct Mounted,
in addition to the ETL listing of Vision air handlers.
Range 1—0.3 to 1.0 m particle size.
Range 2—1.0 to 3.0 m particle size.
Range 3—3.0 to 10.0 m particle size.
The table below shows a comparison of the MERV rating to
the average arrestance percentage by the older ASHRAE
Standard 52.1 method:
Table 3: MERV Rating vs. AHSHRAE Standard 52.1
Standard 52.2
(MERV)
Approx. standard 52.1
Dust spot efficiency
Arrestance
Particle
size range
15
>95%
n/a
1
14
90 to 95%
>98%
1
11
60 to 65%
>95%
2
8
30 to 35%
>90%
3
6
<20%
85 to 90%
3
Standard Filter Types Available:
• MERV 5 – 2" depth. Flat panel filter designed for heavy dust
loading conditions.
• MERV 7 – 2" or 4" depth. Pleated.
• MERV 8 – 2" or 4" depth. Pleated filter with two layers of
added polypropylene laminate to increase efficiency.
• MERV 15, 14, and 11 – 4" depth, 1" track requirement. Mini
pleated filters with metal cell sides and headers that provide
superior moisture resistance.
• MERV 15, 14, and 11 – 12" depth, 1" track requirement.
Steel interlocked header and cell sides hold the corrugated
aluminum separated pleats allowing optimum airflow. Rated
UL Class 1.
• MERV 15, 14, and 11 – 12" depth, 1" track requirement.
Mini pleats held in a V-bank configuration providing greater
airflow capacity and longer service.
• MERV 15, 14 and 11 – 36", 30" and 22" depths, 1" track
requirement. Extended surface pockets made from high-loft,
layered synthetic media. Rated UL Class 1 MERV 8
efficiency filters also available in 19", 15" and 12" depths.
Access
Access sections can be selected to meet specific application
criteria. They can be placed anywhere in a unit in a variety of
depths and are available in depths of 16", 24", 30", 36", 42",
48", and 54". Typically, access sections are used for fieldinstalled components, air monitoring devices, or to provide
ample space between components.
Mixing Boxes and Economizers
When outside and return air mixing is required, either a
mixing box or an economizer section can be selected. Either
component will regulate the amount of outside and return air
supplied to the conditioned space. The mixing box or
economizer can make use of free cooling by opening outside
air dampers when the ambient air will help to condition the
supply air stream. Additionally, dampers may be individually
sized to provide better mixing.
Both the mixing box and economizer are provided with a
McQuay UltraSeal™ low leak damper. This damper has one of
the lowest leakage rates in the industry, maximizing energy
efficiency. At 4.0" static pressure and a face velocity of 1100
fpm through the dampers, the leakage rate is less than 0.2% (it is
common to specify leakage rates at higher static pressures, but
dampers should not exceed 2" of static pressure). The parallel
airfoil blades are hollow core and fully gasketed. Continuous
vinyl seals are provided between the damper blades. Stainless
steel end seals and linkage built into high strength ABS plastic
endcaps provide smooth, quiet operation.
Face and Bypass Dampers
Face and bypass dampers can be provided to modulate
temperature by bypassing air around the coil. The opposed
blades meter varying air volumes through the coil and bypass
to attain the final air temperature demanded. McQuay Vision
air handlers offer only low leak dampers in their face and
bypass sections.
Three styles of face and bypass sections are available.
• Internal bypass is available for use with medium face area
coils (Figure 12).
16
McQuay Cat 565-2
Component Types
Figure 12: Internal Face and Bypass Dampers
Blenders/air mixers help to provide protection for coils against
freeze-up due to stratification. They add additional turbulence
to the passing air streams, boosting the air velocity for
improved mixing. Proper distance is provided immediately
downstream to give the air streams enough time to fully mix
before reaching the next air handler component. Because
blenders/air mixers are static devices, they require no
maintenance. Different blender/air mixer lengths can be
selected to satisfy either the acoustic, space, pressure drop, or
initial cost requirements. The Vision SelectTools software can
help select the appropriate blender/air mixer for the
application.
Figure 13: Blender
• External bypass and external right angle are used when
larger face area coils are required. The damper blades are
fabricated of continuous galvanized steel with the damper
rods rotating in nylon bushings. Damper shaft extensions are
supplied to facilitate damper motor location.
• Integral face and bypass. Vision air handlers are
pre-engineered to provide an accurate, reliable method of
preheating and tempering air in standard or make-up air
applications. Integral face and bypass coils maintain
constant steam pressure or tube velocities through the coil to
help prevent freeze-ups, while varying airflow through the
coil using bypass dampers. The amount of air bypassed or
heated is determined by a preset leaving air temperature. It
can vary from the bypass dampers being fully closed (all air
passes through the coil) for maximum heat output, to the
bypass dampers being fully open (no air passes through the
coil) for minimum heat output. The air is then mixed at the
discharge of the coil to achieve the desired leaving air
temperature. Air pressure drop is maintained constant
regardless of the position of the dampers.
Blenders/Air Mixers
Stratification can occur from the mixing box when airflow
from two different temperature air streams do not mix
completely. This incomplete mixing can continue through the
air handler and subject an unprotected coil (no glycol) to
freezing temperatures, damaging the coil. With the increased
minimum outdoor air requirements as identified by ASHRAE
Standard 62, the likelihood for air stratification increases. An
air handler must be able to handle the required amount of
outdoor air, regardless of temperature, without risking damage
to the coil.
McQuay Cat 565-2
Attenuators
Building occupants have become increasingly conscious of the
quality of their environments, and low sound levels are a key
criteria. Studies have confirmed improved productivity when
workers are performing in sound-controlled environments.
Consequently, building owners, engineers, and architects are
designing their projects with stringent sound criteria to
maximize this economic benefit.
McQuay Vision air handlers are designed to provide quiet
sound levels. Factory-installed attenuators are available for the
discharge or return sections of the air handling unit to meet the
most stringent sound attenuation requirements. Different
attenuator lengths can be selected to satisfy either the acoustic,
space, pressure drop, or initial cost requirements. Quality
construction and an aerodynamic design give reliable
performance, low pressure drop and low initial cost. The
Vision SelectTools Software can help choose the correct
attenuator for your application.
17
Component Types
Figure 14: Attenuator Section
These options include: Disconnect Switch, Starters,
Combination Starter/Disconnect, Variable Frequency Drive
(VFD) with Disconnect Switch, and VFD with Disconnect
Switch and Bypass. Line reactors are available on both VFD
with Disconnect Switch and VFD with Disconnect Switch and
Bypass.
A unit mounted disconnect switch provides the means for
disconnecting power in sight from the motor when required by
the National Electric Code (NEC). The switch is a heavy-duty
type with a non-fused disconnect switch in a NEMA 1
enclosure. A fused disconnect is also available.
Factory mounted starters offer remote start/stop operation and
overload protection for an individual fan motor with minimum
field cost to wire line and control circuit power to the unit.
Two starter types are available, IEC or NEMA. IEC type
starters are smaller in size and are a better value. Additional
options include auxiliary contacts, control transformer,
selector switch, push buttons, and pilot lights. A combination
starter is a starter packaged with a safety switch. These motor
controllers provide remote start/stop operation as well as
disconnecting means in sight of the controller.
Digital Ready™ Air Handlers
Vision Air Handlers can be factory-equipped with industry
standard direct digital control (DDC) components for easy, low
cost integration with controls by others. Sensors and actuators
are selected for maximum compatibility with most DDC
control systems, and are neatly wired within their shipping
section to a conveniently located junction box. Digital Ready
Vision air handlers save the time and costly labor needed to
identify, purchase and field install DDC components to match
your control system. You also benefit from uniform, proper
positioning of DDC components at our factory, which
promotes reliable start-up and operation.
Starters and VFDs
A variety of factory-installed motor control options are
available to provide operation and maintenance protection,
motor efficiency, and flexibility for the Vision air handler.
18
A VFD provides adjustable speed control of a single fan
motor. Typically mounted outside the fan cabinet, the VFD
provides not only a lower cost than field installation, but also
an optimal installation location. VFDs are preprogrammed and
include a keypad for local or remote control.
A unit installed VFD with disconnect provides local or remote
speed control for a single fan motor with disconnecting means
within sight when required by the NEC. A non-fused
disconnect is offered packaged with the VFD in a separate
NEMA 1 enclosure. Installation is limited to the connection of
power and control wires at the device.
Packaged VFD with disconnect and bypass offers added motor
control at the unit for critical fan applications. With bypass
control, power to the VFD can be switched to allow full
operation of the fan motor in case of VFD failure. VFDs with
disconnect switch, bypass and line reactors provide harmonic
control when needed.
McQuay Cat 565-2
Air Handler Selection
Air Handler Selection
Selecting Coils
The Vision air handler provides the ability to select from
multiple face area coils per unit size. Once the coil size is
selected, the row and fin requirements can be determined
based on performance criteria. McQuay offers an extensive
line of coil types and circuitings. This wide variety of
circuiting, row, and fin spacing, in addition to different
material types, can provide a coil selection that handles the
load required.
Heating, cooling, and combination cooling and reheat sections
are available. Coil sections come in many different depths to
accommodate multiple rows of coils, and to provide access on
the leaving air side or between coils for cleaning and
inspection of the drain pan. Access in the coil section can be
minimized or maximized depending on the space available and
job needs. Coil sections can be placed as needed in the unit,
and as many sections as required for conditioning of air can be
provided.
Selecting Accessories
A complete selection of component and section types in a
variety of unit arrangements and configurations is available for
air mixing, filtration, and temperature control to meet specific
application requirements. The outside and/or return air can be
brought into the unit through a plenum, mixing box, or
economizer. For mixing of the two air streams, dampers are
required to modulate and direct outside and return air, which is
accomplished using a mixing box or economizer. Both section
types use the McQuay patented UltraSeal™ low leak dampers.
Blenders/air mixers also are available to provide proper
mixing of two air streams, to prevent stratification and to help
avoid damage to equipment due to freezing temperatures.
To promote good air filtration, many different filter media
types and arrangements are offered. Filters can be provided in
flat filter racks, in a variety of media efficiencies, and with or
without a prefilter. The filter section can be located anywhere
in the unit to filter air as it enters the unit, or in a final filter
McQuay Cat 565-2
arrangement before it leaves the unit. Bag or cartridge filters
can be either front or side loading.
Also available are many different size access sections for
field-installed components or to provide access between
components. Other options include diffusers, plenums, face
and bypass dampers, sound attenuators, and blenders/air
mixers. Standard access doors open outward for maximum
accessibility to internal components.
On pressurized sections, most doors open inward to help
maintain the extremely low cabinet leakage rate of the Vision
unit and to prevent doors from being inadvertently opened
when the cabinet is under pressure.
Selecting Fans
Fan selection requires an accurate calculation of the resistance
to the airflow through the entire system. This total resistance
consists of the sum of two parts—the external and internal
static pressure. The external static pressure is the static
pressure found in the distribution system, external to the air
handler. The internal unit resistance is the sum of the
resistance of the coils and various other unit components and
accessories. Component pressure drops are listed for specific
air flows in this catalog.
Use the Vision SelectTools software to determine internal
component pressure drops of the system. Once the total static
pressure is known, the software identifies the fans available to
properly handle the air flow and static pressure for the system.
The software generates a full fan curve based on the fan
selection and point of operation.
WARNING
SMOKE CONTROL AND MANAGEMENT SYSTEMS
Improper smoke or fume air handling can result in severe
personal injury or death. A registered professional engineer must
design and approve the air conditioner and air handler application
to make sure smoke and fume control meet local fire codes and
NFPA requirements for the specific building application.
19
Quick Select Table
Quick Select Table
Table 4: Quick Select, Unit Sizes 107 to 169
Description
Airflow range, cfm
cfm @ 500 ft/min through large face area coil
Height × width (in)
Cooling coil face area, sq ft
Large
Medium
Fan section—depth (in)
Largest housed fan & motor avail. w/top hor. dischg.
Largest direct drive plenum fan & motor available
Largest dual direct drive plenum fan & motor available
Largest belt drive plenum fan and motor available
Largest belt drive dual plenum fan
Service gantry
Largest 1×3 fan array and motor available
Largest 2×2 fan array and motor available
Largest 2×3 fan array and motor available
Mixing box—depth (in)
Mixing box only
Economizer—depth (in)
Economizer
Blender—depth (in)
Largest Kees
Largest Blender Products IV
Side load filter sections—depth (in)
Flat 2" and 4"
Cartridge (12" deep with 2"/4" pre-filter)
Bag (36" with 2"/4" pre-filter)
Front load filter sections—depth (in)
Cartridge (12" deep with 2"/4" pre-filter)
Bag (36" with 2"/4" pre-filter)
Face and bypass—depth (in)
Internal
External
Coil sections—depth (in)
Heating only (2-row water)
Cooling only (4-row water)
Cooling only (6-row water)
Cooling & reheat (12-row cooling & 1-row heating)
Access sections—depth (in)
16" deep
24" deep
30" deep
36" deep
42" deep
48" deep
54" deep
Diffuse—depth (in)
With housed fan
Attenuator—depth (in)
Short
Medium
Long
Supply or return plenum—depth (in)
Top or end opening
107
29,000 - 77,500
48,400
108 × 168
124
33,600 - 89, 500
55,900
108 × 192
Unit size
141
40,300 - 107,400
67,100
122 × 192
160
45,600 - 121,800
76,200
122 × 216
169
48,400 - 129,000
80,600
122 × 228
109.79
77.5
126.79
89.5
134.25
96.;96
152.25
109.96
161.25
116.46
92
78
78
68
50
30
58
64
58
92
78
78
68
54
30
62
64
62
92
78
78
68
54
30
62
64
62
92
78
78
68
56
30
64
64
64
92
78
78
68
60
30
64
64
64
64
64
72
72
72
118
118
136
136
136
68
78
72
86
80
92
84
92
84
92
22/24
22/24
44/46
22/24
22/24
44/46
22/24
22/24
44/46
22/24
22/24
44/46
22/24
22/24
44/46
20/20
44/44
20/20
44/44
20/20
44/44
20/20
44/44
20/20
44/44
12
58
12
58
12
64
12
64
12
64
12
18
18
24
12
18
18
24
12
18
18
24
12
18
18
24
12
18
18
24
16
24
30
36
42
48
54
16
24
30
36
42
48
54
16
24
30
36
42
48
54
16
24
30
36
42
48
54
16
24
30
36
42
48
54
42
46
46
46
46
40
52
64
40
52
64
40
52
64
40
52
64
40
52
64
36
52
60
60
60
Note: Vision air handler units are available in 2-inch increments of height and 4-inch increments of width to fit the exact space requirements.
20
McQuay Cat 565-2
Application Considerations
Application Considerations
Installation Flexibility
McQuay central station Vision air handlers feature
sectionalized design and can ship fully assembled or in
sections as required by the job site condition to provide
maximum installation flexibility. Multiple fan, coil, filter,
mixing box, face and bypass, and access components allow the
design flexibility of built-up systems with the cost advantage
of factory fabricated units.
Figure 15: Discharge Duct Layout
Note
Note
1
1
Mounting and Access
Take care to keep the supporting structure level and rigid
enough for satisfactory unit operation. Ideally, a heavy
concrete slab should be used for floor mounted units.
Locate units so there is proper access for routine service.
Clearance for filter removal on both sides of the filter section
is usually necessary. Provide clearance as required for access
panels. Allow room for coil removal. Cooling units require
clearance for a trap in the drain pan line.
Access to the interior of the Vision air handler is provided by
hinged access doors or removable panels. For access between
components, versatile access sections feature hinged access
doors on either or both sides.
Note
2
Damper Blades
Perpendicular
to Fan Shaft
Ductwork
A well-designed duct layout minimizes system resistance and
sound generation. Duct connections to and from units should
allow straight, smooth airflow. Avoid discharge plenums or any
abrupt change in duct size. Also avoid sharp turns in the fan
discharge, particularly turns opposed to wheel rotation. If
sharp bends are necessary, use turning vanes. See Figure 15 for
good fan outlet practices.
15º
Perforated
Baffle Plate
Coil
Note – Elbows should not be closer than 1 1/2 to 2 1/2 times
the largest dimension of fan discharge opening.
Place dampers at least 3 fan diameters downstream
of the fan discharge.
Figures reprinted with permission from the 1979 ASHRAE Guide and
Data Book (Equipment).
McQuay Cat 565-2
21
Application Considerations
Piping and Drain Pan Traps
Air Supply Systems and Fan Laws
Design and install piping in accordance with accepted industry
standards. Do not apply undue stress at the connection to coil
headers. Support pipe work independently of the coils with
adequate piping flexibility for thermal expansion. Run drain
lines and traps full size from the drain pan connection. Drain
pans must have traps to allow the condensate from the coils to
drain freely. On a draw-through unit, the trap depth and the
distance between the trap outlet and drain pan outlet should be
twice the negative static pressure under normal unit operation.
See Figure 16.
An air supply system consists of an air handler cabinet, heat
exchanger, filters, ductwork, grilles and registers used to
distribute air throughout the building. The system is
independent of the fan used to supply the system.
Figure 16: Drain Pan Traps
Negative
pressure (P)
For any system, the static pressure varies directly as the square
of the air quantity. This relationship between cfm and SP
establishes the system curve for that system and is expressed
as follows:
2
( cfm )
cfm1
Drain pan
=
2
2P
2P
Vibration Isolation
To help keep noise and vibration compatible with the intended
use of the conditioned air space, apply good acoustical and
vibration engineering practices during the early stages of
design.
Since most applications require vibration isolation, the Vision
air handler is available with factory-installed internal isolation.
Internally isolated units feature spring isolators sized
specifically for each fan wheel and unit size.
Sound
The unit inlet, outlet, and radiated sound levels for each octave
band are calculated by the Vision SelectTools software, based
on your specific application. Sound performance data is
derived from testing performed in accordance with AMCA
Standard 300. The effects of various components, casework,
and unit configurations are taken into account.
22
The resistance of the system, referred to as static pressure (SP),
is dependent upon the quantity of air (cfm) that is moved
through it. The air quantity is determined by the cooling,
heating, and ventilating requirements.
SP1
SP2
or SP2
2
( cfm )
cfm2
= SP1
1
The system curve is unique for a particular system
configuration. Any change to the system caused by dirty
filters, damper changes, etc., results in a new system curve.
For fans operating at low pressures (less than 10" W.G.), the
effects of air compression are negligible. Disregarding air
compression allows fan operation in a fixed system to be
expressed by simple relationships. These relationships are
known as fan laws and can be used to calculate the effects of fan
speed and air density changes on this system.
1 The flow rate varies directly with the change in fan speed:
cfm1
rpm2
rpm1
or cfm2 = cfm1
=
cfm2
rpm2
rpm1
(
)
A 10% increase in fan speed increases air quantity 10%.
2 The static pressure varies as the square of the change in fan
speed:
SP1
SP2
=
rpm
( rpm
) or
1
2
2
SP2 = SP1
( rpm )
rpm2
2
1
A 10% increase in fan speed increases static pressure 21%.
3 The fan brake horsepower varies as the cube of the change
in fan speed:
HP1
=
HP2
rpm
( rpm
) or HP
1
2
3
2
= HP1
( rpm
rpm )
2
3
1
A 10% increase in fan speed increases horsepower 33%.
McQuay Cat 565-2
Application Considerations
4 System static pressure and brake horsepower are directly
proportional to the air density:
SP2 = SP1
rpm
( density
density ) ( rpm )
HP2 = HP1
rpm
( density
density ) ( rpm )
2
2
1
1
2
2
1
1
3
3
Consequently, the static pressure and brake horsepower
decrease with an increase in air temperature or higher altitude,
and increase with a decrease in air temperature or lower
altitude.
To determine fan performance for temperatures and altitudes
other than standard (70°F, 0 ft. altitude), the static pressure
must be adjusted by the density ratio before the fan rpm and
bhp requirements can be determined. Density ratios are
expressed as temperature and altitude conversion factors in
Table 5.
Table 5: Temperature and Altitude Conversion Factors
Whether motor and drive heat gain become part of an air
handling system cooling load depends on the motor location
relative to the conditioned space. For air handlers with internal
motors, the motor and drive are within the conditioned space.
Therefore, the motor and drive add heat to the system. Subtract
this heat from the cooling capacity and add it to the heating
capacity of the unit.
Fan heat generation—All of the power input to a fan results in
heat gain, which must be considered as a cooling load. The
amount of heat generated is directly proportional to the fan bhp:
Fan heat (Btuh) = bhp × 2545
Much of this heat generation occurs within the fan itself. Fans
are not 100% efficient, and the energy losses that occur
convert directly into heat. The work done by the fan on the
airstream increases the temperature, pressure, and velocity of
air. The heat of compression required to raise the airstream to
this increased energy level is also a heat gain.
0
1.15
1.10
1.08
1.02
.99
.95
.92
.88
.85
As the air travels throughout the building, its energy is
deteriorated by friction, resulting in pressure drop. This is also
heat gain, but it does not result in temperature rise because the
air expands as the pressure is reduced. The expansion is a
cooling process that offsets the heat generated by friction.
20
1.11
1.06
1.02
.98
.95
.92
.88
.85
.82
Typical fan and motor heat values are given in Figure 17.
40
1.06
1.02
.98
.94
.91
.88
.84
.81
.78
Figure 17: Fan and Motor Heat GainVariable Air Volume
60
1.02
.98
.94
.91
.88
.85
.81
.79
.76
70
1.00
.96
.93
.89
.86
.83
.80
.77
.74
80
.98
.94
.91
.88
.84
.81
.78
.75
.72
100
.94
.91
.88
.84
.81
.78
.75
.72
.70
120
.92
.88
.85
.81
.78
.76
.72
.70
.67
140
.89
.85
.82
.79
.76
.73
.70
.68
.65
160
.85
.82
.79
.76
.74
.70
.68
.65
.63
200
.80
.77
.75
.72
.69
.67
.64
.62
.60
250
.75
.72
.69
.67
.65
.62
.60
.58
.56
Altitude (ft)
0
–20
1.20
1000 2000 3000 4000 5000 6000 7000 8000
1.16
1.12
1.08
1.04
1.00
.97
.93
.89
Fan and Motor Heat
Motor and drive heat—The total energy input to any fan
motor is consumed in two ways: by heat dissipated through the
motor frame and by work output. The amount of heat
dissipated by the motor is a function of its operating
efficiency:
Motor heat = input × (1 – motor efficiency)
A small amount of the motor work output is dissipated by the
drive mechanism, which also results in a heat gain. Belt drive
losses are a function of belt tension and number of belts as
well as power transmitted. Typical belt drive losses range from
2% to 6% of bhp.
McQuay Cat 565-2
200
Heat Gain (MBH)
Air
temp.
(°F)
160
120
80
40
0
0
10
20
30
40
50
60
70
Brake Horsepower
McQuay variable air volume systems (VAV) employ the
concept of varying the air quantity to a space at a constant
temperature thereby balancing the heat gains or losses and
maintaining the desired room temperature. This true variable
volume system is commonly referred to as a “squeeze-off” or
“pinch-off” system. Unlike a “bypass” or “dump” system,
supply air is diverted from areas where it is not required to
areas that need cooling and, at system part load conditions,
reduces the total fan volume. This ability to reduce supply air
quantities not only provides substantial fan energy savings at
partial load conditions, but it also minimizes equipment sizing.
23
Application Considerations
Variable volume systems offer the following advantages:
• Lowers system first cost by using system diversity to reduce
equipment and duct sizes.
• Lowers operating costs by reducing fan energy demands,
especially at part load conditions.
• Lowers first cost by reducing space requirements for duct
trunks and mechanical equipment.
• Provides system flexibility to match changing occupancy
demands.
In an ideal system, at 50% fan speed, brake horsepower would
be reduced to 12.5% of that at full speed.
Variable frequency control varies the speed of the fan by
adjusting the frequency and voltage to the motor. Keeping a
constant volts/frequency ratio (constant magnetic flux) to the
motor allows the motor to run at its peak efficiency over a
wide range of speeds and resulting fan airflow volumes.
Figure 18 illustrates on a fan curve the effect of varying air
volume with a variable frequency drive.
Figure 18: Variable Frequency Drive Control
Variable Frequency Drives
Variable frequency drives offer reliable operation over a wide
range of airflow, with advantages in sound and energy
performance.
Variable frequency drives provide the most efficient means of
variable volume control by taking advantage of the fan law
relation between fan speed (rpm) and fan brake horsepower
(bhp). Also, since airflow is reduced by changing fan speed,
the noise penalties often associated with mechanical control
devices, e.g. inlet vanes, are not introduced. The following
equation illustrates how fan bhp varies as the cube of the
change in fan speed:
HP2 = HP1
24
( density
density ) ( rpm )
2
rpm2
1
1
3
McQuay Cat 565-2
Engineering and Physical Data
Engineering and Physical Data
Table 6: Component Pressure Drops (Inches of Water)
Dampers
Unit
Size
107
124
141
160
169
Face & BP face
Face & BP by-pass
Plenum
CFM
29100
38750
48400
58100
33600
44800
55900
67100
40300
53650
67100
80600
45600
60900
76100
91400
48400
64500
80600
96700
Blender**
Attenuator
Diffuser
MXB
Econ.
0.08
0.08
0.08
0.08
0.07
0.07
0.07
0.08
0.07
0.07
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.07
0.08
0.08
0.08
0.08
0.07
0.07
0.07
0.08
0.07
0.07
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.08
0.07
Int.
med.
0.02
0.03
0.05
0.07
0.02
0.04
0.05
0.07
0.02
0.04
0.06
0.09
0.02
0.04
0.06
0.09
0.02
0.04
0.06
0.08
External
Large
0.02
0.02
0.03
0.05
0.01
0.02
0.03
0.04
0.01
0.02
0.03
0.05
0.01
0.02
0.03
0.05
0.01
0.02
0.03
0.04
Int.
med.
0.21
0.38
0.59
0.85
0.21
0.43
0.57
0.82
0.16
0.29
0.45
0.64
0.16
0.28
0.43
0.62
0.18
0.31
0.49
0.71
External
Large
0.11
0.11
0.17
0.24
0.06
0.12
0.16
0.23
0.06
0.11
0.17
0.24
0.06
0.10
0.16
0.24
0.06
0.10
0.16
0.23
Top
inlet
0.06
0.05
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
Top
outlet
0.01
0.01
0.02
0.03
0.01
0.02
0.02
0.03
0.01
0.02
0.02
0.03
0.01
0.02
0.02
0.04
0.01
0.02
0.02
0.04
One
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.15
0.03
0.05
0.08
0.11
0.02
0.04
0.05
0.07
0.03
0.05
0.08
0.11
0.04
0.07
0.11
0.16
0.05
0.08
0.13
0.18
Two
0.17
0.30
0.47
0.09
0.18
0.25
0.35
0.14
0.24
0.38
0.12
0.21
0.33
0.48
0.09
0.16
0.25
0.36
Three
3 ft.
4 ft.
5 ft.
0.33
0.35
0.29
-
0.02
0.03
0.05
0.07
0.02
0.03
0.04
0.06
0.02
0.03
0.05
0.07
0.02
0.03
0.05
0.07
0.02
0.03
0.05
0.07
0.02
0.04
0.07
0.10
0.02
0.05
0.07
0.10
0.03
0.05
0.08
0.11
0.03
0.05
0.08
0.12
0.03
0.05
0.08
0.11
0.02
0.05
0.08
0.11
0.03
0.06
0.08
0.12
0.03
0.05
0.09
0.13
0.03
0.05
0.09
0.13
0.03
0.05
0.09
0.13
Table 7: Filter Media Face Areas and Velocity Through Media
Unit
Size
107
124
141
160
169
CFM
29100
38750
48400
58100
33600
44800
55900
67100
40300
53650
67100
80600
45600
60900
76100
91400
48400
64500
80600
96700
McQuay Cat 565-2
2" throwaway (TA)
Side Removal
Vel
Area
108.1
269
108.1
359
108.1
448
108.1
538
126.2
266
126.2
355
126.2
443
126.2
532
147.0
274
147.0
365
147.0
457
147.0
548
165.8
275
165.8
367
165.8
459
165.8
551
174.8
277
174.8
369
174.8
461
174.8
553
Filter face areas (sq. ft.) and velocities (fpm)
2" throwaway (TA)
4" throwaway (TA)
Front Removal
Side Removal
Area
Vel
Area
Vel
95
307
108.1
275
95
408
108.1
366
95
510
108.1
457
95
612
108.1
549
110.4
304
121.4
277
110.4
406
121.4
369
110.4
506
121.4
460
110.4
608
121.4
553
128.6
314
144.1
280
128.6
417
144.1
372
128.6
522
144.1
466
128.6
627
144.1
559
147.4
309
159.3
286
147.4
413
159.3
382
147.4
516
159.3
478
147.4
620
159.3
574
152.8
317
167.1
290
152.8
422
167.1
386
152.8
527
167.1
482
152.8
633
167.1
579
4" throwaway (TA)
Front Removal
Area
Vel
95
320
95
426
95
531
95
638
105.8
317
105.8
423
105.8
528
105.8
634
121.4
332
121.4
442
121.4
552
121.4
663
121.4
375
121.4
501
121.4
626
121.4
752
151.8
319
151.8
425
151.8
531
151.8
637
25
Engineering and Physical Data
Table 8: Filter Media Face Areas and Velocity Through Media (Continued)
Unit
Size
CFM
29100
38750
48400
58100
33600
44800
55900
67100
40300
53650
67100
80600
45600
60900
76100
91400
48400
64500
80600
96700
107
124
141
160
169
12" or 4" cartridge
Side Removal
Area
Vel
109.7
265
109.7
353
109.7
441
109.7
530
125.8
267
125.8
356
125.8
444
125.8
533
146.6
275
146.6
366
146.6
458
146.6
550
164.9
276
164.9
369
164.9
461
164.9
554
172.3
281
172.3
374
172.3
468
172.3
561
Filter face areas (sq. ft.) and velocities (fpm)
12" or 4" cartridge
Bag Filter
Front Removal
Side Removal
Area
Vel
Area
Vel
94.4
308
109.7
265
94.4
411
109.7
353
94.4
513
109.7
441
94.4
616
109.7
530
109.6
306
125.8
267
109.6
409
125.8
356
109.6
510
125.8
444
109.6
612
125.8
533
121.4
332
146.6
275
121.4
442
146.6
366
121.4
552
146.6
458
121.4
663
146.6
550
146.6
311
164.9
276
146.6
415
164.9
369
146.6
519
164.9
461
146.6
623
164.9
554
151.8
319
172.3
281
151.8
425
172.3
374
151.8
531
172.3
468
151.8
637
172.3
561
Bag Filter
Front Removal
Area
Vel
94.4
308
94.4
411
94.4
513
94.4
616
109.6
306
109.6
409
109.6
510
109.6
612
121.4
332
121.4
442
121.4
552
121.4
663
146.6
311
146.6
415
146.6
519
146.6
623
151.8
319
151.8
425
151.8
531
151.8
637
Table 9: Filter Media Air Pressure Drop Based on Clean Filters - High Efficiency Cartridge
Cartridge Filter
Unit
Size
107
124
141
160
169
26
CFM
29100
38750
48400
58100
33600
44800
55900
67100
40300
53650
67100
80600
45600
60900
76100
91400
48400
64500
80600
96700
Varicel SH
12" - Side
MERV 11 MERV 13
0.16
0.22
0.24
0.34
0.33
0.47
0.42
0.61
0.16
0.22
0.24
0.34
0.33
0.47
0.42
0.61
0.17
0.23
0.25
0.35
0.34
0.49
0.45
0.64
0.17
0.23
0.25
0.36
0.35
0.50
0.45
0.65
0.17
0.24
0.26
0.37
0.35
0.51
0.46
0.66
MERV 14
0.23
0.35
0.48
0.63
0.23
0.35
0.48
0.63
0.24
0.36
0.51
0.67
0.24
0.37
0.51
0.68
0.25
0.38
0.53
0.69
12" - Front
MERV 11 MERV 13 MERV 14
0.20
0.28
0.28
0.29
0.42
0.43
0.40
0.58
0.60
0.53
0.76
0.79
0.20
0.28
0.28
0.29
0.42
0.43
0.40
0.58
0.60
0.53
0.76
0.79
0.22
0.31
0.31
0.33
0.47
0.48
0.45
0.65
0.67
0.58
0.85
0.88
0.20
0.28
0.29
0.30
0.43
0.44
0.41
0.59
0.61
0.53
0.77
0.81
0.20
0.29
0.30
0.31
0.44
0.45
0.42
0.61
0.63
0.55
0.80
0.83
Varicel II MH
MERV 11
0.16
0.25
0.35
0.47
0.16
0.25
0.35
0.47
0.17
0.27
0.38
0.50
0.17
0.27
0.38
0.50
0.17
0.27
0.38
0.51
4" - Side
MERV 14
0.28
0.40
0.52
0.65
0.28
0.40
0.52
0.65
0.30
0.42
0.55
0.68
0.30
0.42
0.55
0.69
0.30
0.43
0.56
0.69
MERV 15
0.33
0.47
0.60
0.75
0.33
0.47
0.60
0.75
0.35
0.49
0.63
0.78
0.35
0.49
0.64
0.79
0.35
0.49
0.64
0.79
MERV 11
0.20
0.32
0.45
0.59
0.20
0.32
0.45
0.59
0.21
0.33
0.46
0.62
0.21
0.32
0.46
0.61
0.21
0.33
0.47
0.63
4" - Front
MERV 14
0.34
0.48
0.63
0.78
0.34
0.48
0.63
0.78
0.35
0.49
0.65
0.81
0.34
0.49
0.64
0.80
0.35
0.50
0.66
0.82
MERV 15
0.40
0.56
0.72
0.89
0.40
0.56
0.72
0.89
0.41
0.57
0.74
0.92
0.40
0.56
0.73
0.91
0.41
0.58
0.75
0.93
McQuay Cat 565-2
Engineering and Physical Data
Table 10: Filter Media Air Pressure Drop Based on Clean Filters - Flat Panel
Unit
Size
107
124
141
160
169
5700
2" - Side 2" - Front
MERV 7
MERV 7
0.10
0.12
0.15
0.19
0.21
0.26
0.28
0.33
0.10
0.12
0.15
0.19
0.21
0.26
0.28
0.33
0.11
0.13
0.16
0.19
0.22
0.27
0.29
0.35
0.11
0.13
0.16
0.19
0.22
0.26
0.29
0.34
0.11
0.13
0.16
0.20
0.22
0.27
0.29
0.35
CFM
29100
38750
48400
58100
33600
44800
55900
67100
40300
53650
67100
80600
45600
60900
76100
91400
48400
64500
80600
96700
Flat Panel Filter
PerfectPleatUltra
PerfectPleatHC
2" - Side 2" - Front 4" - Side 4" - Front
MERV 8
MERV 8
MERV 7
MERV 7
0.18
0.21
0.07
0.10
0.26
0.31
0.13
0.17
0.35
0.41
0.19
0.25
0.44
0.52
0.27
0.35
0.18
0.21
0.07
0.10
0.26
0.31
0.13
0.17
0.35
0.41
0.19
0.25
0.44
0.52
0.27
0.35
0.19
0.22
0.08
0.10
0.27
0.32
0.13
0.18
0.36
0.42
0.20
0.27
0.45
0.53
0.28
0.38
0.19
0.22
0.08
0.13
0.27
0.32
0.14
0.23
0.36
0.42
0.21
0.34
0.45
0.53
0.29
0.48
0.19
0.22
0.08
0.13
0.27
0.32
0.14
0.17
0.36
0.43
0.21
0.25
0.46
0.54
0.29
0.35
PerfectPleatUltra
4" - Side 4" - Front
MERV 8
MERV 8
0.12
0.16
0.21
0.29
0.34
0.45
0.48
0.65
0.12
0.16
0.21
0.29
0.34
0.45
0.48
0.65
0.13
0.17
0.23
0.30
0.36
0.47
0.52
0.68
0.13
0.17
0.23
0.30
0.37
0.46
0.53
0.67
0.13
0.17
0.24
0.31
0.37
0.48
0.53
0.70
Table 11:
Table 12: Filter Media Air Pressure Drop Base on Clean Filters - High Efficiency Bag
High Efficiency Bag
Unit
Size
107
124
141
160
169
DriPak 2000
CFM
12"-Side
12"-Front
15"-Side
15"-Front
19"-Side
19"-Front
21"-Side
21"-Front
21"-Side
21"-Front
21"-Side
21"-Front
MERV 8
MERV 8
MERV 8
MERV 8
MERV 8
MERV 8
MERV 11
MERV 11
MERV 14
MERV 14
MERV 15
MERV 15
29100
0.12
0.14
0.09
0.11
0.07
0.09
0.17
0.19
0.25
0.30
0.38
0.44
38750
0.16
0.18
0.13
0.16
0.11
0.14
0.22
0.25
0.34
0.39
0.50
0.58
48400
0.20
0.23
0.17
0.21
0.15
0.19
0.27
0.31
0.42
0.49
0.62
0.72
58100
0.23
0.27
0.22
0.26
0.20
0.25
0.32
0.36
0.51
0.59
0.74
0.86
33600
0.13
0.14
0.09
0.11
0.07
0.09
0.17
0.19
0.26
0.29
0.38
0.44
44800
0.16
0.18
0.13
0.16
0.11
0.14
0.22
0.25
0.34
0.39
0.50
0.58
55900
0.20
0.22
0.17
0.20
0.16
0.19
0.27
0.31
0.43
0.49
0.62
0.71
67100
0.23
0.26
0.22
0.26
0.20
0.25
0.32
0.36
0.51
0.59
0.75
0.85
40300
0.13
0.15
0.09
0.11
0.08
0.09
0.17
0.20
0.26
0.30
0.39
0.45
53650
0.17
0.19
0.13
0.16
0.12
0.14
0.23
0.26
0.35
0.40
0.52
0.59
67100
0.20
0.23
0.18
0.21
0.16
0.20
0.28
0.31
0.44
0.50
0.64
0.73
80600
0.24
0.27
0.23
0.27
0.21
0.26
0.33
0.37
0.53
0.61
0.77
0.88
45600
0.13
0.14
0.09
0.11
0.08
0.09
0.17
0.19
0.27
0.30
0.39
0.44
60900
0.17
0.19
0.14
0.16
0.12
0.14
0.23
0.25
0.35
0.40
0.52
0.58
76100
0.20
0.23
0.18
0.21
0.16
0.20
0.28
0.31
0.44
0.50
0.64
0.73
91400
0.24
0.27
0.23
0.27
0.21
0.26
0.33
0.37
0.53
0.61
0.77
0.88
48400
0.13
0.14
0.09
0.11
0.08
0.09
0.17
0.19
0.27
0.30
0.39
0.44
64500
0.17
0.19
0.14
0.16
0.12
0.14
0.23
0.25
0.35
0.40
0.52
0.58
80600
0.20
0.23
0.18
0.21
0.16
0.20
0.28
0.31
0.44
0.50
0.64
0.73
96700
0.24
0.27
0.23
0.27
0.21
0.26
0.33
0.37
0.53
0.61
0.77
0.88
Table 13:
McQuay Cat 565-2
27
Engineering and Physical Data
Table 14: Filter Media Air Pressure Drop Base on Clean Filters - High Efficiency Bag (Continued)
Unit
Size
107
124
141
160
169
28
High Efficiency Bag
DriPak 2000
CFM
30"-Side
30"-Front
30"-Side
30"-Front
30"-Side
30"-Front
36"-Side
36"-Front
36"-Side
36"-Front
36"-Side
36"-Front
MERV 11
MERV 11
MERV 14
MERV 14
MERV 15
MERV 15
MERV 11
MERV 11
MERV 14
MERV 14
MERV 15
MERV 15
29100
0.15
0.17
0.19
0.22
0.27
0.31
0.11
0.13
0.16
0.18
0.22
0.26
38750
0.19
0.22
0.25
0.30
0.35
0.41
0.15
0.17
0.21
0.24
0.30
0.35
48400
0.23
0.27
0.32
0.37
0.44
0.51
0.19
0.22
0.26
0.30
0.38
0.44
58100
0.27
0.31
0.38
0.44
0.53
0.61
0.22
0.26
0.31
0.35
0.46
0.53
33600
0.15
0.17
0.19
0.22
0.27
0.31
0.12
0.13
0.16
0.18
0.23
0.26
44800
0.19
0.22
0.26
0.29
0.36
0.41
0.15
0.17
0.21
0.24
0.30
0.35
55900
0.23
0.26
0.32
0.37
0.44
0.51
0.19
0.26
0.30
0.44
0.38
0.44
67100
0.28
0.31
0.38
0.44
0.53
0.61
0.22
0.25
0.31
0.35
0.46
0.53
40300
0.15
0.17
0.20
0.23
0.28
0.32
0.12
0.13
0.16
0.19
0.23
0.27
53650
0.20
0.22
0.26
0.30
0.37
0.42
0.16
0.18
0.21
0.24
0.31
0.36
67100
0.24
0.27
0.33
0.38
0.46
0.52
0.19
0.22
0.27
0.30
0.39
0.45
80600
0.28
0.32
0.40
0.45
0.55
0.63
0.23
0.26
0.32
0.36
0.47
0.55
45600
0.15
0.17
0.20
0.22
0.28
0.31
0.12
0.13
0.16
0.18
0.23
0.26
60900
0.20
0.22
0.27
0.30
0.37
0.42
0.16
0.18
0.22
0.24
0.31
0.36
76100
0.24
0.27
0.33
0.38
0.46
0.52
0.19
0.22
0.27
0.30
0.39
0.45
91400
0.28
0.32
0.40
0.45
0.55
0.63
0.23
0.26
0.32
0.36
0.47
0.54
48400
0.15
0.17
0.20
0.22
0.28
0.31
0.12
0.13
0.16
0.18
0.23
0.26
64500
0.20
0.22
0.27
0.30
0.37
0.42
0.16
0.18
0.22
0.24
0.31
0.36
80600
0.24
0.27
0.33
0.38
0.46
0.52
0.19
0.22
0.27
0.30
0.39
0.45
96700
0.28
0.32
0.40
0.45
0.55
0.63
0.23
0.26
0.32
0.36
0.47
0.55
McQuay Cat 565-2
Engineering and Physical Data
Figure 19: Coil Air Pressure Drop—HI-F5 Fin Type (2 Through 12 Rows)
ROWS
3
4
2.0
1.0
1.4
.80
.60
5
2.5
1.8
1.2
1.6
1.0
1.4
.90
2.0
1.6
1.2
.60
1.0
.80
.90
.40
.04
1.6
2.0
1.4
1.8
1.6
1.2
2.8
2.4
2.0
1.8
1.6
1.2
.90
.50
.60
.80
1.0
.70
.90
.40
.30
.20
.25
.30
.20
.15
.09
.06
1.8
1.0
.50
4.0
3.6
3.2
2.5
.70
.10
.07
5.0
.80
1.4
1.2
1.0
.60
.15
.08
3.0
.80
.40
.25
.05
2.5
.60
.20
.06
4.0
1.4
.70
.30
.08
5.0
3.0
.90
.25
.15
2.5
1.2
1.0
.80
.50
.10
6.0
1.4
.90
.40
.15
4.0
2.0
.60
.30
3.0
1.6
.70
.20
12
2.0
1.2
.50
.30
ROWS
8 10
1.8
FIN SERIES
AIR PRESSURE DROP, INCHES IN WATER
.40
6
06
1.4
1.0
.70
MAX. FACE VEL.
Without Water Blowoff
(Does not apply to A)
1.8
.80
.50
14
12
10
08
FIN SERIES
2
.10
.09
14
12
.25
10
.20
.70
.50
.40
.80
.60
.50
.60
.40 .50
.30
08
.40
.25
.30
.15
.20
.25 .30
.10
.15
06
.08
.20
.10
.09
SHR
DEGREE
OF
WETNESS
1.0 - .98
.98 - .92
.92 - .86
.86 - .80
.80 or Less
A
B
C
D
E
E
E
D
D
C
C
B
B
A
200
250
300
400
500 600 700 800
FACE VELOCITY, FPM
.20
A
Notes:
• The letters A,B,C,D or E following the face velocity indicate the degree of wetness at which the coil is operating.
• Dry coils are shown by the letter A, wet coils by the letter E. Intermediate conditions are shown by the letters B, C, and D.
• Air pressure drop for odd fin spacings can be found by interpolation.
McQuay Cat 565-2
29
Engineering and Physical Data
Figure 20: Coil Air Pressure Drop—E-F5 Fin Type (2 Through 12 Rows)
ROWS
2
3
4
2.0
.80
12
10
.40
.80
08
MAX. FACE VEL.
Without Water Blowoff
(Does not apply to A)
.60
FIN SERIES
1.0
.60
06
2.0
AIR PRESSURE DROP, INCHES IN WATER
1.5
1.0
.50
1.0
.30
1.5
.50
.60
.40
.50
.60
.80
.50
.80
.08
.30
.40
.08
.30
FIN SERIES
.04
.08
10
08
.06
.30
.20
.10
.10
.08
E
D
D
C
C
B
B
250 300 350 400 500 600 700 800
FACE VELOCITY, FPM
A
.04
.20
.15
.08
.05
E
200
.20
.15
06
A
.15
.10
12
.60
.40
.20
.15
.03
.50
.30
.10
.03
.60
.40
.20
14
1.0
.80
.50
.15
.06
1.2
.60
.20
.15
.05
1.0
.40
.30
.02
1.6
1.0
.30
.06
2.0
.80
.20
.04
3.0
2.0
.60
.15
.05
2.0
1.0
.80
.40
.10
4.0
1.5
.40
.20
12
3.0
1.5
.80
.30
10
3.0
1.5
14
.50
ROWS
6
8
5
.06
.05
.06
.16
.10
.08
.10
.12
DEGREE
OF
WETNESS
A
1.0 - .98
B
.98 - .92
C
.92 - .86
D
.86 - .80
E
.80 or Less
SHR
Notes:
• The letters A,B,C,D or E following the face velocity indicate the degree of wetness at which the coil is operating.
• Dry coils are shown by the letter A, wet coils by the letter E. Intermediate conditions are shown by the letters B, C, and D.
• Air pressure drop for odd fin spacings can be found by interpolation.
30
McQuay Cat 565-2
Engineering and Physical Data
3.0
1.5
2.5
1
2
ROW ROW
HI-F5
2.5
1.0
14
12
10
08
.90
06
2.0
.80
E-F5
3.0
1.5
FIN SERIES
1
2
ROW ROW
Figure 22: Coil Air Pressure Drop—E-F5 Fin Type
1.0
2.0
.90
.80
1.5
1.5
14
12
10
.70
.70
.60
.60
1.0
.50
08
1.0
.50
.90
FIN SERIES
Figure 21: Coil Air Pressure Drop—HI-F5 Fin Type
06
.90
.80
.80
.40
.70
.70
AIR PRESSURE DROP - INCHES OF WATER
AIR PRESSURE DROP - INCHES OF WATER
.40
.60
.30
.50
.25
.40
.20
.30
.15
.25
.20
.10
.50
.25
.40
.20
.30
.15
.25
.20
.10
.09
.09
.08
.60
.30
.08
.15
.15
.07
.07
.06
.06
.10
.10
.05
.05
.09
.08
.08
.04
.09
.04
.07
.07
.03
.03
300
400
300
500
600 700 800
1000
1500
400
500
600 700 800
1000
1500
STANDARD AIR FACE VELOCITY - FT/MIN
STANDARD AIR FACE VELOCITY - FT/MIN
Note:
Air pressure drop for odd fin spacings can be found by interpolation.
McQuay Cat 565-2
31
Engineering and Physical Data
Figure 23: 1" Steam Coil Air Pressure Drop
HI-F8
1
ROW
2.0
1.5
1.0
.90
.80
.70
.60
.50
.30
.25
.20
.15
14
12
.10
AIR PRESSURE DROP - INCHES OF WATER
.40
.09
FIN SERIES
10
.08
.07
08
.06
.05
06
.04
04
03
.03
.025
.02
300
400
500
600 700 800
1000
1500
STANDARD AIR FACE VELOCITY - FT/MIN
Note:
Air pressure drop for odd fin spacings can be found by interpolation.
32
McQuay Cat 565-2
Engineering and Physical Data
Component and Section Weights
Table 15: Unit Coil Weights
Unit
Size
Rows
1
2
3
4
5
6
8
10
12
107
lbs
364
714
1173
1507
1842
2174
2894
3112
3325
124
kg
165
324
532
684
836
986
1313
1412
1508
lbs
436
807
1378
1774
2225
2622
3304
4071
4840
141
kg
198
366
625
805
1009
1189
1499
1847
2195
lbs
354
884
1614
2176
2612
3082
3909
4822
5735
160
kg
161
401
732
987
1185
1398
1773
2187
2601
lbs
529
986
1798
2325
2913
3428
4385
5415
6456
169
kg
240
447
816
1055
1321
1555
1989
2456
2928
lbs
406
1037
1891
2436
2991
3535
4629
5712
6811
kg
184
470
858
1105
1357
1603
2100
2591
3089
Notes:
1 and 2-row coils based on heating coils with no side plates. All coils based on 8 fpi.
Table 16: Weights for Single Speed and Dual Speed Motors
Motor
rpm
900
rpm
1200
rpm
1800
rpm
3600
rpm
1800/
900
rpm
1800/
1200
rpm
Motor hp
NEMA frame
Motor Weight (lbs)
Motor Weight (kg)
NEMA frame
Motor Weight (lbs)
Motor Weight (kg)
NEMA frame
Motor Weight (lbs)
Motor Weight (kg)
NEMA frame
Motor Weight (lbs)
Motor Weight (kg)
NEMA frame
Motor Weight (lbs)
Motor Weight (kg)
NEMA frame
Motor Weight (lbs)
Motor Weight (kg)
1/4
48
19
9
-
1/3
48
24
11
-
1/3
56
35
16
-
3/4
56
35
16
-
1
182T
56
25
145T
44
20
143T
44
20
56
32
15
143T
25
11
145T
30
14
1 1/2
184T
64
29
182T
66
30
145T
54
24
145T
40
18
145T
28
13
182T
56
25
2
213T
94
43
184T
85
39
145T
54
24
145T
40
18
145T
31
14
182T
65
29
3
215T
111
50
213T
114
52
182T
84
38
145T
50
23
182T
63
29
184T
73
33
5
254T
150
68
215T
145
66
184T
100
45
182T
76
34
184T
72
33
215T
113
51
7 1/2
256T
207
94
254T
224
102
213T
139
63
184T
91
41
213T
104
47
256T
211
96
10
284T
300
136
256T
248
112
215T
165
75
213T
110
50
215T
130
59
256T
237
108
15
286T
300
136
284T
330
150
254T
242
110
215T
147
67
254T
244
111
284T
318
144
20
324T
385
175
286T
377
171
256T
273
124
254T
182
83
256T
232
105
286T
348
158
25
326T
415
188
324T
450
204
284T
351
159
256T
223
101
284T
250
113
286T
349
158
30
364T
580
263
326T
487
221
286T
432
196
284TS
359
163
286T
275
125
286T
295
134
40
365T
580
263
364T
703
319
324T
531
241
286TS
369
167
324T
350
159
-
50
404T
750
340
365T
720
327
326T
592
269
324TS
447
203
326T
390
177
-
60
405T
800
363
404T
1153
523
364T
714
324
326TS
558
253
-
75
444T
1100
499
405T
1200
544
365T
895
406
405TS
713
323
-
100
404T
1186
538
-
125
405T
1663
754
-
150
444T
1752
795
-
*Data included reflects the largest NEMA frame and/or the heaviest motor weight per motor hp.
Table 17: Base Rail Weights
8" Base rail weights
Fan section
24" Access section
McQuay Cat 565-2
107
lbs
730
521
kg
331
236
124
lbs
746
556
Standard unit nominal size
141
160
kg
lbs
kg
lbs
kg
338
760
345
776
352
252
567
257
607
275
169
lbs
783
627
kg
355
284
33
Engineering and Physical Data
Fan Data
Table 18: Physical Data, Forward Curved and Airfoil Housed Fans, Unit Sizes 107 to 169
Forward curved—English units
Diameter Class I (inches)
9×4
9×7
9×9
10.62
12.62
15
18
20
22.25
24.5
Maximum rpm
N/A
2189
2223
1934
1614
1328
1155
1050
944
858
Shaft and bearing diameter (inches)
N/A
1
1
1
1
1.188
1.188
1.938
2.1875
2.1875
Outlet area (square feet)
N/A
0.65
0.84
1.04
1.46
2.05
2.87
5.18
6.27
7.63
Diameter Class Il (inches)
9×4
9×7
9×9
10.62
12.62
15
18
20
22.25
24.5
Maximum rpm
2700
2854
2896
2518
2091
1725
1450
1200
1030
910
1
1
1
1
1.188
1.188
1.938
2.188
2.4375
2.4375
0.48
0.65
0.84
1.04
1.46
2.05
2.87
5.18
6.27
7.63
Shaft and bearing diameter (inches)
Outlet area (square feet)
Forward curved—SI units
Diameter Class I (millimeters)
229 × 102 229 × 178 229 × 229
Maximum rpm
N/A
2189
Shaft & bearing diameter (millimeters)
N/A
25
Outlet area (square meters)
N/A
0.060
Diameter Class II (millimeters)
Maximum rpm
Shaft and bearing diameter (millimeters)
Outlet area (square meters)
270
321
381
457
508
565
622
2223
1934
1614
1328
1155
1050
944
858
25
25
25
30
30
49
56
56
0.078
0.097
0.136
0.190
0.267
0.481
0.58
0.71
229 × 102 229 ×178 229 × 229
2700
2854
2896
270
321
381
457
508
565
622
2518
2091
1725
1450
1432
944
858
25
25
25
25
30
30
49
56
62
62
0.045
0.060
0.078
0.097
0.136
0.190
0.267
0.481
0.58
0.71
Airfoil—English units
Diameter Class I (inches)
13.22
14.56
16.19
19.69
21.56
24
Maximum rpm
3000
3000
2300
2000
1700
1500
Shaft and bearing diameter (inches)
1.188
1.438
1.438
1.938
1.938
2.1875
Outlet area (square feet)
2.11
2.85
3.52
4.68
5.82
7.01
Diameter Class II (inches)
13.22
14.56
16.19
19.69
21.56
24
Maximum rpm
4335
3918
3457
2858
2547
2255
Shaft and bearing diameter (inches)
1.438
1.688
1.688
2.188
2.438
2.4375
2.11
2.85
3.52
4.68
5.82
7.01
Outlet area (square feet)
Airfoil—SI units
Diameter Class I (millimeters)
336
370
411
500
548
610
Maximum rpm
3000
3000
2300
2000
1700
1500
Shaft and bearing diameter (millimeters)
Outlet area (square meters)
30
37
37
49
49
56
0.196
0.265
0.327
0.435
0.541
0.65
Diameter Class II (millimeters)
336
370
411
500
548
610
Maximum rpm
4335
3918
3457
2858
2547
2547
37
43
43
56
62
62
0.196
0.265
0.327
0.435
0.541
0.65
Shaft and bearing diameter (millimeters)
Outlet area (square meters)
34
McQuay Cat 565-2
Engineering and Physical Data
Table 19: Physical Data—Forward Curved and Airfoil Fans, Unit Sizes 107 to 169
Forward curved—English units
Diameter Class I (inches)
20
22.38
25
27.62
30.25
33
36
—
—
Maximum rpm
1010
930
790
690
650
600
560
—
—
—
—
Shaft and bearing diameter (inches)
1.438
1.438
1.688
1.688
1.688
2.188
2.188
—
—
—
Outlet area (square feet)
4.2
5.1
6.71
8.07
9.3
12.05
12.8
—
—
—
Diameter Class Il (inches)
20
22.38
25
27.62
30.25
33
36
—
—
—
Maximum rpm
1281
1178
1011
910
835
763
715
—
—
—
Shaft and bearing diameter (inches)
1.688
2.188
2.438
2.438
2.688
2.688
2.688
—
—
—
Outlet area (square feet)
4.2
5.1
6.71
8.07
9.3
12.05
12.8
—
—
—
Diameter Class I (millimeters)
508
568
635
702
768
838
914
—
—
—
Maximum rpm
1010
930
790
690
650
600
560
—
—
—
Forward curved—SI units
Shaft & bearing diameter (millimeters)
37
37
43
43
43
56
56
—
—
—
0.390
0.474
0.623
0.750
0.864
1.119
1.189
—
—
—
Diameter Class II (millimeters)
508
568
635
702
768
838
914
—
—
—
Maximum rpm
1281
1178
1011
910
835
763
715
—
—
—
43
56
62
62
68
68
68
—
—
—
0.390
0.474
0.623
0.750
0.864
1.119
1.189
—
—
—
49.0
Outlet area (square meters)
Shaft and bearing diameter (millimeters)
Outlet area (square meters)
Airfoil—English units
Diameter Class I (inches)
20
22.25
24.5
27
30
33
36.5
40.25
44.5
Maximum rpm
2077
1875
1691
1479
1328
1209
1073
972
884
805
Shaft and bearing diameter (inches)
1.688
1.938
2.188
2.188
2.438
2.438
2.438
2.938
3.188
3.438
Outlet area (square feet)
4.14
5.12
6.21
7.54
9.31
11.27
13.79
16.77
20.5
24.9
Diameter Class II (inches)
20
22.25
24.5
27
30
33
36.5
40.25
44.5
49.0
Maximum rpm
2703
2413
2199
1928
1730
1579
1401
1264
1146
1040
Shaft and bearing diameter (inches)
2.188
2.188
2.438
2.438
2.688
2.938
2.938
3.438
3.938
3.938
Outlet area (square feet)
4.14
5.12
6.21
7.54
9.31
11.27
13.79
16.77
20.5
24.9
Airfoil—SI units
Diameter Class I (millimeters)
508
565
622
686
762
838
927
1022
1130
1244
Maximum rpm
2077
1875
1691
1479
1328
1209
1073
972
884
805
43
49
56
56
62
62
62
75
81
87
0.385
0.476
0.577
0.700
0.865
1.047
1.281
1.558
1.905
2.313
Diameter Class II (millimeters)
508
565
622
686
762
838
927
1022
1130
1244
Maximum rpm
2703
2413
2199
1928
1730
1579
1401
1264
1146
1040
56
56
62
62
68
75
75
87
100
100
0.385
0.476
0.577
0.700
0.865
1.047
1.281
1.558
1.905
2.313
Shaft and bearing diameter (millimeters)
Outlet area (square meters)
Shaft and bearing diameter (millimeters)
Outlet area (square meters)
McQuay Cat 565-2
35
Engineering and Physical Data
Table 20: Physical Data—Belt Drive Plenum Fans
Fan Size
13
15
16
18
20
22
24
27
30
33
36
40
44
49
54
60
Plenum—English units
Diameter Class
Il (inches)
13.56
15.25
17.88
18.25
20.0
22.25
24.5
27.0
30.0
33.0
36.5
40.25
44.5
49.0
54.25
60.0
Maximum rpm
3909
3468
2820
2930
2674
2403
2183
1860
1783
1620
1465
1329
1202
1091
986
891
Shaft and
bearing
diameter
(inches)
Outlet area
(square feet)
1.1875 1.1875 1.1875 1.4375 1.4375 1.6875 1.6875 1.6875 1.9375 2.1875 2.1875 2.1875 2.1875 2.4375 2.4375 2.9375
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Plenum—SI units
Diameter Class
II (millimeters)
344
387
454
464
508
565
622
686
762
838
927
1022
1130
1245
1378
1524
Maximum rpm
3909
3468
2820
2930
2674
2403
2183
1860
1783
1620
1465
1329
1202
1091
986
891
Shaft and
bearing
diameter
(millimeters)
30.2
30.2
30.2
36.5
36.5
42.9
42.9
42.9
49.2
55.6
55.6
55.6
61.9
61.9
61.9
74.6
Outlet area
(square meters)
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
Table 21: Physical Data—Direct Drive Plenum Fans
Plenum—English units
Diameter Class Il
(inches)
Maximum
rpm
11
12
15
16
18
20
22
24
27
30
33
36
40
44
4000 4000 3909 3650 3650 2674 2403 2183 1981 1783 1620 1465 1329 1202
Plenum—SI units
Diameter Class II
(millimeters)
Maximum
rpm
36
279
305
381
406
457
508
559
610
686
762
838
914
1016 1118
4000 4000 3909 3650 3650 2674 2403 2183 1981 1783 1620 1465 1329 1202
McQuay Cat 565-2
Engineering and Physical Data
Coil Data
Table 22: Coil Dimensional Data (English Units)
Unit
107
124
141
160
169
Size
Fin (in.) Height Length Sq. Ft. Height Length Sq. Ft. Height Length Sq. Ft. Height Length Sq. Ft. Height Length Sq. Ft.
Standard
45
155
96.88
45
179
111.88
54
179
134.25
54
203
152.25
54
215
161.25
Split
48
71
94.66
48
83
110.66
54
83
124.5
54
95
142.5
54
101
151.5
36
155
96.88
36
179
89.5
42
179
104.42
42
203
118.42
42
215
125.42
Medium Standard
Split
36
71
71
36
83
83
42
83
96.83
42
95
110.83
42
101
117.83
Coil
Size
Large
Note: Standard coils are a quantity of 2 coils stacked with an intermediate drain pan.
Split coils are a quantity of 4 coils same as stacked with a center split.
Table 23: Coil Dimensional Data (SI Units)
Unit
107
124
141
160
169
Size
Fin (mm.) Height Length Sq. M Height Length Sq. M Height Length Sq. M Height Length Sq. M Height Length Sq. M
Standard 1143
3937
9.00
1143
4547
10.39 1372
4547
12.47 1372
5156
14.14 1372
5461
14.98
Split
1219
1803
8.79
1219
2108
10.28 1372
2108
11.57 1372
2413
13.24 1372
2565
14.07
3937
9.00
914
4547
8.31
1067
4547
9.70
1067
5156
11.00 1067
5461
11.65
Medium Standard 914
Split
914
1803
6.60
914
2108
7.71
1067
2108
9.00
1067
2413
10.30 1067
2565
10.95
Coil
Size
Large
Note: Standard coils are a quantity of 2 coils stacked with an intermediate drain pan.
Split coils are a quantity of 4 coils same as stacked with a center split.
Table 24: Physical Data—Fan Array
Fan Array—English units
Fan diameter (inches)
12.0
13.5
15.0
16.5
18.25
20.0
22.25
24.5
27.0
30.0
33.0
Maximum rpm, Class I
4000
4000
3670
3270
2900
2685
2480
2255
1940
1770
1590
Maximum rpm, Class II
N/A
N/A
N/A
3960
3660
N/A
2625
2625
2440
2195
2010
Fan Array—SI units
Fan diameter
(millimeters)
305
343
381
419
464
508
565
622
686
762
838
Maximum rpm, Class I
4000
4000
3670
3270
2900
2685
2480
2255
1940
1770
1590
Maximum rpm, Class II
N/A
N/A
N/A
3960
3660
N/A
2625
2625
2440
2195
2010
Note – Outlet area is N/A for all fan array sizes due to plenum fans. Shaft and bearing diameter is N/A for all sizes due to direct drive.
McQuay Cat 565-2
37
Engineering and Physical Data
Side Load Filter Data
Table 25: Filter Quantity Data
Unit Size
107
124
141
160
169
38
Filter Size
(in)
2" throwaway (TA)
12" or 4" cartridge
4" throwaway (TA)
Bag Filter
12" or 4" cartridge
Bag Filter
Side
Front
Side
Front
Side
12 x 24
0
0
0
0
0
Front
0
20 x 20
5
0
30
0
30
0
20 x 24
0
0
0
0
0
0
24 x 12
0
0
0
6
0
6
24 x 20
30
30
10
12
10
12
24 x 24
0
0
0
12
0
12
12 x 24
0
0
0
0
0
0
20 x 20
30
30
0
30
0
30
20 x 24
0
0
0
0
0
0
24 x 12
0
0
8
0
8
0
24 x 20
15
10
16
10
16
10
24 x 24
0
0
16
0
16
0
12 x 24
0
0
0
0
0
0
20 x 20
6
6
0
8
0
8
20 x 24
24
24
0
32
0
32
24 x 12
0
0
0
0
0
0
24 x 20
3
2
8
0
8
0
24 x 24
12
8
32
0
32
0
12 x 24
0
0
0
0
0
0
20 x 20
0
0
0
0
0
0
20 x 24
0
0
0
0
0
0
24 x 12
0
0
0
0
0
0
24 x 20
9
8
9
8
9
8
24 x 24
36
32
36
32
36
32
12 x 24
0
0
4
0
4
0
20 x 20
3
10
0
10
0
10
20 x 24
12
40
0
40
0
40
24 x 12
0
0
0
0
0
0
24 x 20
24 x 24
7
28
0
0
9
36
0
0
9
36
0
0
McQuay Cat 565-2
Technical Data
Technical Data
This section provides examples of output from our McQuay
Tools Selection Software. Included are technical data sheets,
unit drawings, fan curves, and summary fax sheet. This
information is readily available based performance
requirements from your project schedule.
Technical data sheets (below) include details of each section
and component performance characteristics including airflow,
air pressure drops, capacity, entering/leaving air temperatures,
filtration, return/supply fan data, section/unit weights, and
sound levels. Please contact our local McQuay Sales Office for
a selection on your next project.
107 Extended Size Air Handling Unit
Technical Data Sheet
JOB NAME
JOB DESCRIPTION
MODEL NUMBER
UNIT TAGGING
REP. OFFICE
SALESPERSON
ENGINEER
VERSION
U8G064(XX.000)
Extended Sizes
CAH107GDAC
107
House Account
MO
8.74
Unit configuration
Inline horizontal
Drive (handing) location Right
SUPPLY
RETURN / EXHAUST
Air volume
Altitude
Turning loss
External static
Total static
External H x W
48400
0
0.00
2.00
5.01
108 x 168 (Not including base rails)
Outer panel
Liner
Insulation
Frame
Base
Sound baffles
Tread Plate floor liner
Standard G90 galv steel (unpainted)
Galvanized steel (Unless noted per section)
R-13 Injected Foam (Unless noted per section)
2 ins
8" formed channel
None (unless noted per section)
None (unless noted per section)
scfm
ft
in WC.
in WC.
in WC.
ins
CASING DETAILS
1 MIXING BOX(72 ins)
SECTION
Drip pan
None
Drip side
Length x Width
Location
Dampers
Actuation
Rated cfm
Air pressure drop
OUTSIDE AIR
68.00 x 80.00
End
UltraSeal Low Leak
48400
0.05
RETURN AIR
68.00 x 80.00
Top
UltraSeal Low Leak
48400
DOOR DATA
Door location
Door width
Door opening
Drive side
28
Outward
ins
Window size
Light
ins
cfm
in WC
None
None
2 BLENDER(52 ins)
Model
Qty
Total face area
Face velocity
Air pressure drop
Drip pan
McQuay Cat 565-2
SECTION
Kees Inc.
2
23.0
1052
0.26
None
1
2
ft2
fpm
ins WC
Drip side
-
39
Technical Data
3 COMBINATION FILTER(22 ins)
Access
Air volume
Side
48400
SECTION
cfm
PRE-FILTER
Throwaway (MERV 7)
0.21
0.60
1.00
2.00
Type
Efficiency
Clean air press. drop
Mean air press. drop
Dirty air press. drop
Depth
BANK ARRANGEMENT
No. of Filters
Size H x W
10
20.00 x 24.00 x 2.00
30
20.00 x 20.00 x 2.00
DOOR DATA
Door location
Drive side
Door width
18
Door opening
Outward
SPECIAL
Tread Plate floor liner
None
Liner
(As casing details)
Insulation
(As casing details)
Sound baffles
None
Special static pressure -
Face velocity
Face area
FILTER
Varicel SH cartridge
85
0.47
0.83
1.20
12.00
441
109.7
Window size
Light
None
None
%
ins WC
ins WC
ins WC
ins
ins
ins
ins WC
Filter Gauge
Minihelic II 0-3"
4 HOT WATER COIL(12 ins)
Coil model
Capacity
5WS0702C
2654590
Air volume
Entering db
Leaving db
Finned height x length
Face area
Face velocity
Coil air pressure drop
48400
40.0
90.2
30 x 152
95.00
509
0.26
Connection type
Connection Qty x size
Connection location
Connection material
Glycol type (%)
Fouling Factor
Threaded
2 x 2.50
Drive side
Carbon steel
- (0 %)
0
Coil code
5WS0702C
40
2
fpm
ft2
SECTION
2
Btu/h
Number of coils
Number of rows
Fins per inch
3
2
7
cfm
F
F
ins
ft2
ft/m
ins WC
Entering water
Leaving water
Water flow rate
Water pressure drop
Water velocity
160.0
139.9
264.60
8.70
4.70
F
F
gpm
ftHD
ft/s
Fluid volume
Fluid weight
27.0
228.00
gal
lb
Fin material
Tube material
Header material
Case material
Drip pan
Drip pan side
Turbospirals
Electro-fin coat
Aluminum (.0075)
Copper (.020)
Copper
Galvanized track
None
None
None
ins
McQuay Cat 565-2
Technical Data
5 CHILLED WATER COIL(24 ins)
SECTION
Coil model
Total capacity
Sensible capacity
5WM1005C
1937893
1351492
Btu/h
Btu/h
Air volume
Entering db/wb
Leaving db/wb
Finned height x length
Face area
Face velocity
Coil air pressure drop
48400
80.0 / 67.0
54.5 / 54.0
45 x 155
96.88
500
1.00
cfm
F
F
ins
ft2
ft/m
ins WC
Connection type
Connection Qty x size
Connection location
Connection material
Glycol type (%)
Fouling Factor
Threaded
2 x 3.00
Drive side
Carbon steel
- (0 %)
0
Coil code
DOOR DATA
Door location
Door width
Door opening
5WM1005C
Drive side
8
Outward
ins
ins
2
5
10
Entering water
Leaving water
Water flow rate
Water pressure drop
Water velocity
45.0
55.0
387.60
18.90
4.60
F
F
gpm
ftHD
ft/s
Fluid volume
Fluid weight
62.0
523.00
gal
lb
Fin material
Tube material
Header material
Case material
Drain pan
Drain pan side
Turbospirals
Electro-fin coat
Aluminum (.0075)
Copper (.020)
Copper
Galv. steel
Stainless steel
Drive side
None
None
Window size
Light
None
Marine light kit and switch only
6 SUPPLY FAN SECTION(94 ins)
Air volume
48400
External static pressure 2.00
Total static pressure
5.01
Type
Blade type/Class
Airfoil / 2
Fan wheel diameter
44.50
Brake horsepower
51.81
Operating/Max speed
892 / 1146
Orientation
Top horizontal
Air modulation
None
Drip pan
None
Drip pan side
Wheel guard
None
Belt guard
None
Inspection port
None
DRIVES
Fan sheave
4TB184
Number of belts
4
ANTI-VIBRATION MOUNTS / SPRINGS
Type
Spring
Seismic restraint
None
DOOR DATA
Door location
Drive side
Door width
30
Door opening
Outward
McQuay Cat 565-2
3
Number of coils
Number of rows
Fins per inch
SECTION
cfm
Motor power
ins WC Motor type
ins WC Frame size
Electrical supply
Motor efficiency
Motor speed
ins
Motor pole
HP
Full load current
rpm
Lock rotor current
Motor supplier
Actual drive service fac.
Bearing type
Outlet velocity
Inlet screen
Outlet screen
ins
60.0
ODP
364 T frame
460/60/3
Premium
1750
4
70
456
Generic
1.34
Standard - L50 (200K)
2333
None
None
4
HP
rpm
A
A
ft/m
Motor sheave
Belt
4B5V90
BX116
Window size
Light
None
Marine light kit with GFI outlet
41
Technical Data
NOTES
Supply fan performance is certified in accordance with the Central Station Air-Handling Unit Certification Program,
which is based on ARI Standard 430.
As a standalone component, unit meets or exceeds requirements of ASHRAE 90.1 - 1999. The approving authority
is responsible for compliance of multi-component building systems.
SHIPPING SECTION DETAILS
Section 1
Section 2
Section 3
Section 4
TOTALS
UNIT SOUND
Radiated
Unit discharge
Unit return
42
Length (inches)
72
86
24
94
276.00 (Lower level total)
63 Hz
89
97
92
125 Hz
94
102
97
250 Hz
85
97
89
Weight (lb)
2559
4256
3300
4237
14352 (Entire unit weight)
500 Hz
78
95
86
1000 Hz
72
92
78
2000 Hz
63
86
68
4000 Hz
47
82
57
8000 Hz
38
74
48
McQuay Cat 565-2
Technical Data
Unit Drawings
Unit drawings (below) show all opening and connection
locations and are available in .dxf format for easily
incorporating into project drawings.
Figure 24: 107 Extended Size Drawings
Ope ning
A Damper
B Damper
C Damper
D Damper
E Hot water outlet
F Hot water inlet
G Hot water outlet
H Hot water inlet
I
Hot water outlet
J Hot water inlet
K Cold water outlet
L Cold water inlet
M Cold water outlet
N Cold water inlet
O Condensate drain conn.
P Fan discharge
Dimensions measured from
C
X
0.00
2.00
0.00
2.00
150.57
150.57
150.57
150.57
150.57
150.57
163.29
167.16
163.29
167.16
170.00
277.00
Y
2.00
2.00
86.00
86.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-3.40
50.00
Z
28.00
116.00
28.00
116.00
44.05
17.40
75.45
48.80
106.85
80.20
59.44
17.56
106.44
64.56
11.73
58.00
W (W idth)
80.00
80.00
80.00
80.00
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
3.00ins. MPS
3.00ins. MPS
3.00ins. MPS
3.00ins. MPS
1.50ins. MPS
64.05
H(He ight)
68.00
68.00
68.00
68.00
47.99
D
P
A
B
H
G
FI M
E
J
K N
LO
B
D
I M
P
J
G
N
K
A
C
H
E
F
L
O
NOTE:
Base 8.00ins deep, Cross members extend 4ins on each side of the unit.
VIEW :
DRAW N:
JOB NAME:
UNIT TAGGING:
MODEL:
General Arrangement No Ends
June-12-2008 (14:58)
Extended Sizes
107
CAH107GDAC
McQuay Cat 565-2
43
Technical Data
Figure 25: 107 Extended Size Drawings (Continued)
Opening
A Damper
B Damper
C Damper
D Damper
E Hot water outlet
F Hot water inlet
G Hot water outlet
H Hot water inlet
I
Hot water outlet
J Hot water inlet
K Cold water outlet
L Cold water inlet
M Cold water outlet
N Cold water inlet
O Condensate drain conn.
P Fan discharge
Dimensions measured from
X
0.00
2.00
0.00
2.00
150.57
150.57
150.57
150.57
150.57
150.57
163.29
167.16
163.29
167.16
170.00
277.00
Y
2.00
2.00
86.00
86.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-3.40
50.00
Z
28.00
116.00
28.00
116.00
44.05
17.40
75.45
48.80
106.85
80.20
59.44
17.56
106.44
64.56
11.73
58.00
W (W idth)
80.00
80.00
80.00
80.00
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
3.00ins. MPS
3.00ins. MPS
3.00ins. MPS
3.00ins. MPS
1.50ins. MPS
64.05
H(Height)
68.00
68.00
68.00
68.00
47.99
B
D
I
M
P
J
G
N
K
A
C
H
E
F
L
O
NOTE:
Base 8.00ins deep, Cross members extend 4ins on each side of the unit.
VIEW :
DRAW N:
JOB NAME:
UNIT TAGGING:
MODEL:
Right Side
June-12-2008 (14:58)
Extended Sizes
107
CAH107GDAC
44
McQuay Cat 565-2
Technical Data
Figure 26: 107 Extended Size Drawings (Continued)
Opening
A Damper
B Damper
C Damper
D Damper
E Hot water outlet
F Hot water inlet
G Hot water outlet
H Hot water inlet
I
Hot water outlet
J Hot water inlet
K Cold water outlet
L Cold water inlet
M Cold water outlet
N Cold water inlet
O Condensate drain conn.
P Fan discharge
Dimensions measured from
C
X
0.00
2.00
0.00
2.00
150.57
150.57
150.57
150.57
150.57
150.57
163.29
167.16
163.29
167.16
170.00
277.00
Y
2.00
2.00
86.00
86.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-7.00
-3.40
50.00
Z
28.00
116.00
28.00
116.00
44.05
17.40
75.45
48.80
106.85
80.20
59.44
17.56
106.44
64.56
11.73
58.00
W (W idth)
80.00
80.00
80.00
80.00
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
3.00ins. MPS
3.00ins. MPS
3.00ins. MPS
3.00ins. MPS
1.50ins. MPS
64.05
H(Height)
68.00
68.00
68.00
68.00
47.99
D
P
A
B
H
G
FI
E
J
M
K
O
N
L
NOTE:
Base 8.00ins deep, Cross members extend 4ins on each side of the unit.
VIEW :
DRAW N:
JOB NAME:
UNIT TAGGING:
MODEL:
Top
June-12-2008 (14:58)
Extended Sizes
107
CAH107GDAC
McQuay Cat 565-2
45
Technical Data
Fan Curves
Figure 27: 107 Extended Size Fan Curve
McQUAY INTERNATIONAL FAN SELECTION
8.0
1000 rpm
7.0
6.5
6.0
5.5
800 rpm
p
4.5
bh
5.0
0
15
4.0
5
12
p
3.0
bh
3.5
600 rpm
2.5
0
10
bh
2.0
p
bh
bh
p
CFM (IN 1,000's)
100.0
95.0
p 80.0
75.0
p 85.0
bh
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
p
bh 90.0
60
40
hp
p
hp
bh
15
b
bh 10 bh
p
p
b
30
7. 5
25
hp
hp
0.0
5b
b
20
3
1
1 bh.p5 bh2pbhp bhp
0.5
50
1.5 400 rpm
1.0
75
STATIC PRESSURE (IN. OF WATER)
7.5
00
rp
m
pm
0r
12
8.5
0
14
9.0
44.50" Airfoil Supply Fan at Standard Conditions
Air volume
48400
cfm
Fan speed
892
rpm
Total static
5.01
insWg
Max speed
1146
rpm
Brake horsepower
51.8
bhp
Efficiency
73.7
%
Unit tagging
107
Job name
Extended Sizes
Date June-12-2008
Time 14:58
Supply fan performance is certified in accordance with the Central Station Air-Handling
Unit Certification Program, which is based on ARI Standard 430.
46
McQuay Cat 565-2
Technical Data
Fax Sheet
The fax sheet (below) can be used as a quick reference toward the air handler’s performance.
JOB NAME
JOB DESCRIPTION
MODEL NUMBER
UNIT TAGGING
REP. OFFICE
SALESPERSON
ENGINEER
VERSION
U8G064(XX.000)
Extended Sizes
CAH107GDAC
107
Unit configuration
Inline horizontal
Supply external dimensions
Exhaust external dimensions
(HxW) ins
(HxW) ins
SUPPLY
cfm
ft.
in WC
in WC
in WC
ins
HP
HP
V/Hz/P
COIL PERFORMANCE
1st COIL
5WS0702C
2654590
40.0 / 90.2 / 95.00
509
0.26
160.0 / 139.9
264.60
- (0 %)
8.70
-
Btu/hr
Btu/hr
F
F
sqft
fpm
in WC
F
gpm
ftHD
F
psig
FILTER DATA
COMPONENT
Mixing Box
Blender
Combination Filter
Hot Water Coil
Chilled Water Coil
Fan Section
RETURN / EXHAUST
48400
0
0.00
2.00
5.01
44.50 / AF
51.81
60.00
460/60/3
IN ORDER OF AIR FLOW
Coil model
Total capacity
Sensible capacity
Entering db / wb
Leaving db / wb
Face area
Face velocity
Air pressure drop
EWT / LWT
Flow rate
Glycol type / %
Water pressure drop
Suction temp / Refrig
Steam pressure
Type
Efficiency
Face area
Face velocity
8.74
108 x 168
FAN PERFORMANCE
Air volume
Altitude
Turning loss
External static
Total static
Fan diameter / type
Fan power
Motor power
Motor voltage
House Account
MO
2nd COIL
STAGE 1
Throwaway (MERV 7)
109.7
441
sqft
fpm
SUPPLY
APD (in WC)
WEIGHT (lbs)
0.05
0.26
1.44
0.26
1.00
0.00
3rd COIL
4th COIL
5WM1005C
1937893
1351492
80.0 / 67.0
54.5 / 54.0
96.88
500
1.00
45.0 / 55.0
387.60
- (0 %)
18.90
-
STAGE 2
STAGE 3
Varicel SH cartridge
85
109.7
441
COMPONENT
RET/EXH
APD (in WC)
WEIGHT (lbs)
541.71
600.39
785.47
827.00
2275.94
1655.45
** Denotes a component static pressure based on the fan air volume rather than the individual component air volume.
SHIPPING SECTION DETAILS
Section 1
Section 2
Section 3
Section 4
Length (ins)
72
86
24
94
Weight (lbs)
2559
4256
3300
4237
Length (ins)
TOTALS (Lower level total length, entire unit total weight)
Weight (lbs)
276.00
14352
UNIT SOUND
63 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
Radiated
Unit discharge
Unit return
89
97
92
94
102
97
85
97
89
78
95
86
72
92
78
63
86
68
47
82
57
38
74
48
NOTES
Liner material is Galvanized steel
Insulation is R-13 Injected Foam
Supply fan performance is certified in accordance with the Central Station Air-Handling Unit Certification Program, based on ARI Standard 430.
McQuay Cat 565-2
47
Technical Data
160 Extended Size Air Handling Unit
Technical Data Sheet
JOB NAME
JOB DESCRIPTION
MODEL NUMBER
UNIT TAGGING
REP. OFFICE
SALESPERSON
ENGINEER
VERSION
U8G064(XX.004)
Extended Sizes
CAH160GDAM
160
House Account
MO
8.74
Unit configuration
Inline horizontal
Drive (handing) location Right
SUPPLY
RETURN / EXHAUST
Air volume
Altitude
Turning loss
External static
Total static
External H x W
76100
0
0.00
2.00
5.69
122 x 216
60880
0
0.00
1.00
1.14
122 x 216 (Not including base rails)
Outer panel
Liner
Insulation
Frame
Base
Sound baffles
Tread Plate floor liner
Standard G90 galv steel (unpainted)
Galvanized steel (Unless noted per section)
R-13 Injected Foam (Unless noted per section)
2 ins
8" formed channel
None (unless noted per section)
None (unless noted per section)
scfm
ft
in WC.
in WC.
in WC.
ins
CASING DETAILS
1 PLENUM SECTION (46 ins)
Drip pan
Opening location
DOOR DATA
Door location
Door width
Door opening
48
SECTION
None
End upper
Drive side
30
Outward
ins
Drip side
Opening size
42.00 x 212.00
Window size
Light
None
None
1
ins
McQuay Cat 565-2
Technical Data
2 RETURN/EXHAUST FAN SECTION (88 ins)
Air volume
60880
External static pressure 1.00
Total static pressure
1.14
Type
Plenum
Blade type/Class
AirFoil / 2
Fan wheel diameter
66.00
Brake horsepower
23.37
Operating/Max speed
457 / 769
Discharge
Axial
Air modulation
None
Drip pan
None
Drip pan side
Wheel guard
None
Belt guard
None
Inspection port
None
DRIVES
Fan sheave
3B250R
Number of belts
3
ANTI-VIBRATION MOUNTS / SPRINGS
Type
Spring
Seismic restraint
None
DOOR DATA
Door location
Drive side
Door width
30
Door opening
Outward
SECTION
cfm
Motor power
ins WC Motor type
ins WC Frame size
Electrical supply
Motor efficiency
Motor speed
ins
Motor pole
HP
Full load current
rpm
Lock rotor current
Motor supplier
Actual drive service fac.
Bearing type
Outlet velocity
Inlet screen
Outlet screen
ins
30.0
ODP
286 T frame
460/60/3
Premium
1750
4
36.2
224
Generic
1.41
Standard - L50 (200K)
None
None
Length x Width
Location
Dampers
Actuation
Hoods
Rated cfm
Air pressure drop
DOOR DATA
Door location
Door width
Door opening
McQuay Cat 565-2
ft/m
Window size
Light
None
Marine light kit with GFI outlet
SECTION
Drip side
RETURN AIR
104.00 x 104.00
Internal
UltraSeal Low Leak
-
EXHAUST AIR
50.00 x 104.00
Top
UltraSeal Low Leak
-
76100
0.08
60880
0.07
60880
0.08
ins
A
A
3B5V62
BX180
None
OUTSIDE AIR
68.00 x 104.00
Top
UltraSeal Low Leak
-
Drive side
28
Outward
rpm
Motor sheave
Belt
3 ECONOMIZER (126 ins)
Drip pan
2
HP
Window size
Light
3&4
ins
cfm
in WC
None
None
49
Technical Data
4 COMBINATION FILTER(24 ins)
Access
Air volume
Side
76100
SECTION
cfm
PRE-FILTER
Pleated (MERV 8)
70
0.37
0.68
1.00
4.00
Type
Efficiency
Clean air press. drop
Mean air press. drop
Dirty air press. drop
Depth
BANK ARRANGEMENT
No. of Filters
Size H x W
36
24.00 x 24.00 x 4.00
9
20.00 x 24.00 x 4.00
DOOR DATA
Door location
Drive side
Door width
20
Door opening
Outward
SPECIAL
Pre-filter Intersept Antimicrobial treatment
Tread Plate floor liner
None
Liner
(As casing details)
Insulation
(As casing details)
Sound baffles
None
Special static pressure -
Face velocity
Face area
FILTER
None
0.00
0.00
0.00
12.00
461
164.9
Window size
Light
None
None
%
ins WC
ins WC
ins WC
ins
ins
ins
ins WC
Filter Gauge
Minihelic II 0-3"
5 INTERNAL FACE AND BYPASS(12 ins)
SECTION
Damper type
Opposed blade - low leak
Air pressure drop (face) 0.06
Air pressure drop (bypass) 0.43
Note: Cabinet height for bypass extended 0.00 inches above ‘External cabinet height’ referenced above.
6 HOT WATER COIL(12 ins)
Coil model
Capacity
5WS1202B
2131375
Air volume
Entering db
Leaving db
Finned height x length
Face area
Face velocity
Coil air pressure drop
38050
40.0
91.2
42 x 92
107.33
709
0.39
Connection type
Connection Qty x size
Connection location
Connection material
Glycol type (%)
Fouling Factor
Threaded
2 x 2.50
Drive side
Carbon steel
- (0 %)
0
Coil code
5WS1202B
4
fpm
ft2
5
ins WC
SECTION
5
Btu/h
Number of coils
Number of rows
Fins per inch
4
2
12
cfm
F
F
ins
ft2
ft/m
ins WC
Entering water
Leaving water
Water flow rate
Water pressure drop
Water velocity
160.0
139.5
208.00
7.10
4.00
F
F
gpm
ftHD
ft/s
Fluid volume
Fluid weight
17.0
143.00
gal
lb
Fin material
Tube material
Header material
Case material
Drip pan
Drip pan side
Turbospirals
Electro-fin coat
Aluminum (.0075)
Copper (.020)
Copper
Galvanized track
None
None
None
ins
Component performance shown is based on the component air volume shown.
Static pressure shown is based on the component air volume shown.
50
McQuay Cat 565-2
Technical Data
7 CHILLED WATER COIL(20 ins)
SECTION
Coil model
Total capacity
Sensible capacity
5WM1008B
1570461
1085252
Btu/h
Btu/h
Air volume
Entering db/wb
Leaving db/wb
Finned height x length
Face area
Face velocity
Coil air pressure drop
38050
80.0 / 67.0
53.9 / 53.5
42 x 95
110.83
687
1.62
cfm
F
F
ins
ft2
ft/m
ins WC
Connection type
Connection Qty x size
Connection location
Connection material
Glycol type (%)
Threaded
2 x 2.50
Drive side
Carbon steel
- (0 %)
Fouling Factor
0
Coil code
5WM1008B
ins
5
Number of coils
Number of rows
Fins per inch
4
8
10
Entering water
Leaving water
Water flow rate
Water pressure drop
Water velocity
45.0
55.3
304.70
14.90
3.90
F
F
gpm
ftHD
ft/s
Fluid volume
Fluid weight
58.0
486.00
gal
lb
Fin material
Tube material
Header material
Case material
Drain pan
Aluminum (.0075)
Copper (.020)
Copper
Galv. steel
Microbial resistant coated
galvanized
Drive side
None
None
Drain pan side
Turbospirals
Electro-fin coat
Component performance shown is based on the component air volume shown.
Static pressure shown is based on the component air volume shown.
8 SUPPLY FAN SECTION (92 ins)
Air volume
76100
External static pressure 2.00
Total static pressure
5.69
Type
Blade type/Class
Airfoil / 2
Fan wheel diameter
49.00
Brake horsepower
103.67
Operating/Max speed
948 / 1040
Orientation
Top horizontal
Air modulation
None
Drip pan
None
Drip pan side
Wheel guard
None
Belt guard
None
Inspection port
None
DRIVES
Fan sheave
5B5V200
Number of belts
5
ANTI-VIBRATION MOUNTS / SPRINGS
Type
Spring
Seismic restraint
None
DOOR DATA
Door location
Drive side
Door width
30
Door opening
Outward
McQuay Cat 565-2
SECTION
cfm
Motor power
ins WC Motor type
ins WC Frame size
Electrical supply
Motor efficiency
Motor speed
ins
Motor pole
HP
Full load current
rpm
Lock rotor current
Motor supplier
Actual drive service fac.
Bearing type
Outlet velocity
Inlet screen
Outlet screen
ins
125.0
ODP
405 T frame
460/60/3
High
1750
4
146
928
Generic
1.46
Standard - L50 (200K)
3025
None
None
Motor sheave
Belt
5B5V110
5VX1180
Window size
Light
None
None
6
HP
rpm
A
A
ft/m
51
Technical Data
9 DIFFUSER(46 ins)
Type
DOOR DATA
Panel Location
Panel Width
Panel Opening
SECTION
Perforated plate
Removable panels
32
Outward
ins
Air pressure drop
0.15
Window size
Light
None
None
10 ATTENUATOR(40 ins)
Model (No. H x W)
Media protection
INSERTION LOSS
dB
SPECIAL
Tread Plate floor liner
Liner
Insulation
Sound baffles
Special static pressure
SECTION
10 RSS-N
None
63 Hz
6
125Hz
9
Module H x W
Air pressure drop
250Hz
500Hz
1000Hz
19
34
50
None
Integral
(As casing details)
None
-
ins WC
Filter Gauge
3x5
0.08
2000Hz
50
SECTION
None
Drive side
20
Inward
ins
Tread plate installed
(As casing details)
(As casing details)
None
-
Drip side
-
Window size
Light
None
None
ins WC
Filter Gauge
Front
76100
SECTION
cfm
PRE-FILTER
Type
None
Efficiency
Clean air press. drop 0.00
Mean air press. drop
0.00
Dirty air press. drop
0.00
Depth
2.00
BANK ARRANGEMENT
No. of Filters
Size H x W
32
24.00 x 24.00 x 2.00
8
20.00 x 24.00 x 2.00
SPECIAL
Final filter Intersept Antimicrobial treatment
Tread Plate floor liner
None
Liner
(As casing details)
Insulation
(As casing details)
Sound baffles
None
Special static pressure -
52
8
None
12 COMBINATION FILTER (20 ins)
Access
Air volume
4000Hz
42
7
ins
in WC
8000Hz
32
None
11 ACCESS SECTION(24 ins)
Drip pan
DOOR DATA
Door location
Door width
Door opening
SPECIAL
Tread Plate floor liner
Liner
Insulation
Sound baffles
Special static pressure
7
ins WC
Face velocity
Face area
FILTER
Varicel SH cartridge
95
0.61
0.91
1.20
12.00
519
146.6
8
fpm
ft2
%
ins WC
ins WC
ins WC
ins
ins
ins WC
Filter Gauge
None
McQuay Cat 565-2
Technical Data
13 PLENUM SECTION (56 ins)
Drip pan
Opening location
DOOR DATA
Door location
Door width
Door opening
SECTION
None
End upper
Drive side
30
Outward
ins
Drip side
Opening size
52.00 x 212.00
Window size
Light
None
None
9
ins
NOTES
Supply fan performance is certified in accordance with the Central Station Air-Handling Unit Certification Program,
which is based on ARI Standard 430.
Important Notice
This unit may not meet ASHRAE Standard 90.1 - 1999 fan motor power limitations. If that code applies, alternate fan
selections may be required.
The designer and installer must ensure compliance with applicable codes. A component supplier cannot determine
the brake horsepower ("BHP") for other motors in the air handling system.
Before approving this unit, determine whether ASHRAE Standard 90.1 - 1999 has been adopted in the specific
jurisdiction or contract specifications in which the unit will be installed.
SHIPPING SECTION DETAILS
Section 1
Section 2
Section 3
Section 4
Section 5
Section 6
Section 7
Section 8
Section 9
TOTALS
UNIT SOUND
Radiated
Unit discharge
Unit return
McQuay Cat 565-2
Length (inches)
46
88
54
96
44
92
86
44
56
606.00 (Lower level total)
63 Hz
94
95
96
125 Hz
99
97
93
250 Hz
90
80
89
Weight (lb)
2328
4739
1969
3735
7580
5383
6585
3092
2156
37567 (Entire unit weight)
500 Hz
83
63
87
1000 Hz
77
40
83
2000 Hz
68
30
79
4000 Hz
52
29
73
8000 Hz
43
24
68
53
Technical Data
Unit Drawings
Figure 28: 160 Extended Size Drawings
Ope ning
A Exhaust inlet
B Damper
C Damper
D Damper
E Damper
F Hot water outlet
G Hot water inlet
H Hot water outlet
I
Hot water inlet
J Hot water outlet
K Hot water inlet
L Hot water outlet
M Hot water inlet
N Cold water outlet
O Cold water inlet
P Cold water outlet
Q Cold water inlet
R Condensate drain conn.
S Cold water outlet
T Cold water inlet
U Cold water outlet
V Cold water inlet
W Condensate drain conn.
X Supply outlet
Dimensions measured from
X
0.00
136.00
136.00
190.00
190.00
300.57
300.57
300.57
300.57
300.57
300.57
300.57
300.57
313.41
321.16
313.41
321.16
318.00
313.41
321.16
313.41
321.16
318.00
606.00
Y
2.00
2.00
110.00
2.00
110.00
-7.00
-7.00
-7.00
-7.00
223.00
223.00
223.00
223.00
-7.00
-7.00
-7.00
-7.00
-3.40
223.00
223.00
223.00
223.00
219.40
2.00
Z
86.00
130.00
130.00
130.00
130.00
56.05
17.40
99.45
60.80
56.05
17.40
99.45
60.80
56.69
17.31
100.69
61.31
11.73
56.69
17.31
100.69
61.31
11.73
76.00
W (W idth)
212.00
104.00
104.00
104.00
104.00
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
1.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
1.50ins. MPS
212.00
H(He ight)
42.00
50.00
50.00
68.00
68.00
52.00
M
K
JU
L
SWV
T
C
E
X
A
B
D
H
G
FI P
NRQ
O
C
B
D
E
A
HP
X
FI NQ
G RO
NOTE:
Base 8.00ins deep, Cross members extend 4ins on each side of the unit.
VIEW :
DRAW N:
JOB NAME:
UNIT TAGGING:
MODEL:
General Arrangement No Ends
June-12-2008 (14:58)
Extended Sizes
160
CAH160GDAM
54
McQuay Cat 565-2
Technical Data
Figure 29: 160 Extended Size Drawings (Continued)
Opening
A Exhaust inlet
B Damper
C Damper
D Damper
E Damper
F Hot water outlet
G Hot water inlet
H Hot water outlet
I
Hot water inlet
J Hot water outlet
K Hot water inlet
L Hot water outlet
M Hot water inlet
N Cold water outlet
O Cold water inlet
P Cold water outlet
Q Cold water inlet
R Condensate drain conn.
S Cold water outlet
T Cold water inlet
U Cold water outlet
V Cold water inlet
W Condensate drain conn.
X Supply outlet
Dimensions measured from
X
0.00
136.00
136.00
190.00
190.00
300.57
300.57
300.57
300.57
300.57
300.57
300.57
300.57
313.41
321.16
313.41
321.16
318.00
313.41
321.16
313.41
321.16
318.00
606.00
C
B
A
Y
2.00
2.00
110.00
2.00
110.00
-7.00
-7.00
-7.00
-7.00
223.00
223.00
223.00
223.00
-7.00
-7.00
-7.00
-7.00
-3.40
223.00
223.00
223.00
223.00
219.40
2.00
Z
86.00
130.00
130.00
130.00
130.00
56.05
17.40
99.45
60.80
56.05
17.40
99.45
60.80
56.69
17.31
100.69
61.31
11.73
56.69
17.31
100.69
61.31
11.73
76.00
W (W idth)
212.00
104.00
104.00
104.00
104.00
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
1.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
1.50ins. MPS
212.00
H(He ight)
42.00
50.00
50.00
68.00
68.00
52.00
D
E
H P
X
FI NQ
G RO
NOTE:
Base 8.00ins deep, Cross members extend 4ins on each side of the unit.
VIEW :
DRAW N:
JOB NAME:
UNIT TAGGING:
MODEL:
Right Side
June-12-2008 (14:58)
Extended Sizes
160
CAH160GDAM
McQuay Cat 565-2
55
Technical Data
Figure 30: 160 Extended Size Drawings (Continued)
Ope ning
A Exhaust inlet
B Damper
C Damper
D Damper
E Damper
F Hot water outlet
G Hot water inlet
H Hot water outlet
I
Hot water inlet
J Hot water outlet
K Hot water inlet
L Hot water outlet
M Hot water inlet
N Cold water outlet
O Cold water inlet
P Cold water outlet
Q Cold water inlet
R Condensate drain conn.
S Cold water outlet
T Cold water inlet
U Cold water outlet
V Cold water inlet
W Condensate drain conn.
X Supply outlet
Dimensions measured from
X
0.00
136.00
136.00
190.00
190.00
300.57
300.57
300.57
300.57
300.57
300.57
300.57
300.57
313.41
321.16
313.41
321.16
318.00
313.41
321.16
313.41
321.16
318.00
606.00
Y
2.00
2.00
110.00
2.00
110.00
-7.00
-7.00
-7.00
-7.00
223.00
223.00
223.00
223.00
-7.00
-7.00
-7.00
-7.00
-3.40
223.00
223.00
223.00
223.00
219.40
2.00
Z
86.00
130.00
130.00
130.00
130.00
56.05
17.40
99.45
60.80
56.05
17.40
99.45
60.80
56.69
17.31
100.69
61.31
11.73
56.69
17.31
100.69
61.31
11.73
76.00
W (W idth)
212.00
104.00
104.00
104.00
104.00
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
1.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
2.50ins. MPS
1.50ins. MPS
212.00
H(He ight)
42.00
50.00
50.00
68.00
68.00
52.00
M
K
J S
L
UWV
T
C
E
X
A
B
D
H
G
FI N
P RQ
O
NOTE:
Base 8.00ins deep, Cross members extend 4ins on each side of the unit.
VIEW :
DRAW N:
JOB NAME:
UNIT TAGGING:
MODEL:
Top
June-12-2008 (14:58)
Extended Sizes
160
CAH160GDAM
56
McQuay Cat 565-2
Technical Data
Fan Curves
Figure 31: 160 Extended Size Fan Curve (49")
McQUAY INTERNATIONAL FAN SELECTION
m
rp
00
12
9.0
8.5
1000 rpm
8.0
7.0
6.5
6.0
5.5
800 rpm
5.0
4.5
4.0
3.5
600 rpm
0
15
3.0
p
bh
2.5
2.0
5
12
400 rpm
1.5
p
bh
0
10
120.0
p
bh 115.0
110.0
CFM (IN 1,000's)
100.0
85.0
80.0
75.0
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
50
bh
p
p
bh 105.0
75
bh
p
95.0
0.0
40
p
bh
30
15
2
bh 0 bh 25 bh bh
p
p
p
p
10
7.
1 b1h.5p bh2pbhp3 bhp 5 bhp 5 bhp bhp
0.5
90.0
1.0
60
STATIC PRESSURE (IN. OF WATER)
7.5
49.00" Airfoil Supply Fan at Standard Conditions
Air volume
76100
cfm
Fan speed
948
rpm
Total static
5.69
insWg
Max speed
1040
rpm
Brake horsepower
103.7
bhp
Efficiency
65.7
%
Unit tagging
160
Job name
Extended Sizes
Date June-12-2008
Time 14:58
Supply fan performance is certified in accordance with the Central Station Air-Handling
Unit Certification Program, which is based on ARI Standard 430.
Figure 32: 160 Extended Size Fan Curve (66")
McQUAY INTERNATIONAL FAN SELECTION
700 rp
m
6.5
rpm
900
pm
0r
80
7.0
5.5 600 rpm
5.0
4.5
4.0 500 rpm
hp
0b
15
3.5
3.0
2.5 400 rpm
hp
5b
12
2.0
1.5 300 rpm
1.0
200 rpm
0.5
1
5 b 7.5
hp bhp 0 bhp
1 b1h.5p bh2pbhp3 bhp
0.0
30
15 b 2
2
hp 0 bhp 5 bhp bhp
50
40
bh 60 bh 75
bh
bhp
p
p
p
120.0
115.0
110.0
105.0
100.0
95.0
90.0
85.0
80.0
75.0
70.0
65.0
60.0
55.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
CFM (IN 1,000's)
hp
0b
10
STATIC PRESSURE (IN. OF WATER)
6.0
66.0" Airfoil Plenum Ret/Exh Fan at Standard Conditions
Air volume
60880
cfm
Fan speed
457
rpm
Total static
1.14
insWg
Max speed
769
rpm
Brake horsepower
23.4
bhp
Efficiency
46.6
%
Unit tagging
160
Job name
Extended Sizes
McQuay Cat 565-2
Date June-12-2008
Time 14:58
57
Technical Data
Fax Sheet
JOB NAME
JOB DESCRIPTION
MODEL NUMBER
UNIT TAGGING
REP. OFFICE
SALESPERSON
ENGINEER
VERSION
U8G064(XX.004)
Extended Sizes
CAH160GDAM
160
(HxW) ins
(HxW) ins
122 x 216
122 x 216
FAN PERFORMANCE
SUPPLY
cfm
ft.
in WC
in WC
in WC
ins
HP
HP
V/Hz/P
COIL PERFORMANCE
60880
0
0.00
1.00
1.14
66.00 / BB
23.37
30.00
460/60/3
1st COIL
5WS1202B
2131375
40.0 / 91.2 / 107.33
709
0.39
160.0 / 139.5
208.00
- (0 %)
7.10
-
Btu/hr
Btu/hr
F
F
sqft
fpm
in WC
F
gpm
ftHD
F
psig
FILTER DATA
COMPONENT
RETURN / EXHAUST
76100
0
0.00
2.00
5.69
49.00 / AF
103.67
125.00
460/60/3
IN ORDER OF AIR FLOW
Coil model
Total capacity
Sensible capacity
Entering db / wb
Leaving db / wb
Face area
Face velocity
Air pressure drop
EWT / LWT
Flow rate
Glycol type / %
Water pressure drop
Suction temp / Refrig
Steam pressure
2nd COIL
Pleated (MERV 8)
70
164.9
461
sqft
fpm
SUPPLY
Economizer
Combination Filter
Int. Face & Bypass (face/bp)
Hot Water Coil
Chilled Water Coil
Fan Section
Diffuser
Attenuator
Access section
Combination Filter
Plenum section
APD (in WC)
0.08
0.68
0.06 / 0.43
0.39
1.62
0.00
0.15
0.08
0.00
0.61
0.02
3rd COIL
STAGE 2
STAGE 3
None
164.9
461
WEIGHT (lbs)
1059.37
347.94
746.42
1211.59
3901.74
2216.09
96.95
3694.96
0.00
1404.38
0.00
4th COIL
5WM1008B
1570461
1085252
80.0 / 67.0
53.9 / 53.5
110.83
687
1.62
45.0 / 55.3
304.70
- (0 %)
14.90
-
STAGE 1
Type
Efficiency
Face area
Face velocity
8.74
Inline horizontal
Unit configuration
Supply external dimensions
Exhaust external dimensions
Air volume
Altitude
Turning loss
External static
Total static
Fan diameter / type
Fan power
Motor power
Motor voltage
House Account
MO
None
146.6
519
COMPONENT
RET/EXH
Plenum section
Fan Section
Economizer
APD (in WC)
0.06
0.00
0.08
WEIGHT (lbs)
0.00
1628.13
-
** Denotes a component static pressure based on the fan air volume rather than the individual component air volume.
SHIPPING SECTION DETAILS
Length (ins)
Weight (lbs)
Section 1
46
2328
Section 2
88
4739
Section 3
54
1969
Section 4
96
3735
Section 5
44
7580
TOTALS (Lower level total length, entire unit total weight)
Length (ins)
Section 6
Section 7
Section 8
Section 9
92
86
44
56
Weight (lbs)
5383
6585
3092
2156
606.00
37567
UNIT SOUND
63 Hz
125 Hz
250 Hz
500 Hz
1000 Hz
2000 Hz
4000 Hz
8000 Hz
Radiated
Unit discharge
Unit return
94
95
96
99
97
93
90
80
89
83
63
87
77
40
83
68
30
79
52
29
73
43
24
68
NOTES
Liner material is Galvanized steel
Insulation is R-13 Injected Foam
Supply fan performance is certified in accordance with the Central Station Air-Handling Unit Certification Program, based on ARI Standard 430.
58
McQuay Cat 565-2
Electrical Data
Electrical
DataWiring
Supply Power
For units with cooling and heating:
MCA = 1.25 × largest load + sum of all other loads
1 Units required three phase power supply.
Note – Control circuit ampacity does not need to be considered
in the calculation for wire sizing ampacity. If the unit is
provided with one or more fan section lights, they are
powered from the separate 15 amp (minimum), 120 V
supply required by the NEC for the unit convenience
outlet.
4 Size wires in accordance with Table 310-16 or 310-19 of
2 Allowable voltage tolerances:
a 60 Hertz
Nameplate 208 V: Min. 187 V, max. 229 V
Nameplate 230 V: Min. 207 V, max. 253 V
Nameplate 460 V: Min. 414 V, max. 506 V
Nameplate 575 V: Min. 518 V, max. 633 V
the National Electrical Code.
3 Minimum Circuit Ampacity (MCA) calculation:
5 Wires should be sized for a maximum of 3% voltage drop.
Note: If a unit is provided with multiple power
connections, each must be considered alone in selecting
power wiring components.
Table 26: Recommended Power Wiring
NO. OF
POWER
AMPACITY
WIRES PER
PHASE
30
1
40
1
55
1
70
1
85
1
95
1
130
1
150
1
175
1
200
1
230
1
255
1
300
2
350
2
400
2
460
2
510
2
600
3
690
3
765
3
McQuay Cat 565-2
WIRE
GAUGE
INSULATION
RATING
(0°C)
AMPACITY
10
8
6
4
3
2
1
1/0
2/0
3/0
4/0
250
1/0
2/0
3/0
4/0
250
3/0
4/0
250
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
75
30
40
55
70
85
95
130
150
175
200
230
255
300
350
400
460
510
600
690
765
59
Engineering Guide Specification
Engineering Guide Specification
PART 1: GENERAL
V GSA 2003 Facilities Standard - 5.9 HVAC Systems and
Components
1.01 SECTION INCLUDES
A Indoor air handling units.
1.03 SUBMITTALS
A Shop Drawings: Indicate assembly, unit dimensions,
1.02 REFERENCES
A AFBMA 9 - Load Ratings and Fatigue Life for Ball
Bearings
B AMCA 99 - Standards Handbook
C AMCA 210 - Laboratory Methods of Testing Fans for
Rating Purposes
D AMCA 300 - Test Code for Sound Rating Air Moving
Devices
E AMCA 500 - Test Methods for Louver, Dampers, and
Shutters
F ARI 410 - Forced-Circulation Air-Cooling and Air-Heating
Coils
G ARI 430 - Central-Station Air-Handling Units.
H ARI 435 - Application of Central-Station Air-Handling
Units
I ASTMB117 – Standard Practice for Operating Salt Spray
Apparatus
weight loading, required clearances, construction details,
field connection details, and electrical characteristics and
connection requirements. Computer generated fan curves
for each air handling unit shall be submitted with specific
design operating point noted. A computer generated
psychometric chart shall be submitted for each cooling coil
with design points and final operating point clearly noted.
Sound data for discharge, radiated and return positions
shall be submitted by octave band for each unit.
Calculations for required baserail heights to satisfy
condensate trapping requirements of cooling coil shall be
included.
B Product Data:
1 Provide literature that indicates dimensions, weights,
capacities, ratings, fan performance, and electrical
characteristics and connection requirements.
2 Provide data of filter media, filter performance data,
filter assembly, and filter frames.
C Manufacturer’s Installation Instructions.
J NEMA MG1 - Motors and Generators.
K NFPA 70 - National Electrical Code.
L SMACNA - HVAC Duct Construction Standards - Metal
and Flexible.
M UL 723 – Test for Surface Burning Characteristics of
1.04 QUALIFICATIONS
A Manufacturers specializing in manufacturing Air Handling
Units specified in this section must prove minimum five
years documented experience and issue a complete catalog
on total product.
Building Materials
N UL 900 - Test Performance of Air Filter Units
1.05 SAFETY AGENCY LISTED & CERTIFICATION
O UL 1995 – Standard for Heating and Cooling Equipment
A Air handling units shall be cETLus safety listed that
P UL 94 – Test for Flammability of Plastic Materials for Parts
in Devices and Appliances
Q IBC 2000, 2003 – International Building Code
R NFPA 90A – Standard for the Installation of Air
Conditioning and Ventilating Systems
S NFPA 5000 – Building Construction and Safety Code
T ASHRAE 90.1 Energy Code
U ARI Standard 1060 – Rating Air-to-Air Heat Exchangers
for Energy Recovery Ventilation Equipment
60
conforms to UL Standard 1995 and CAN/CSA Standard
C22.2 No. 236. Units shall be accepted for use in New York
City by the Department of Building, MEA 342-99-E.
B Air handler furnished with double width, double inlet
(DWDI) and/or plenum fans shall be certified in
accordance with the central station air handling units
certification program, which is based on ARI 430. (NOTE:
Above does not apply to fan array)
C Air handling unit water heating & cooling coils shall be
certified in accordance with the forced circulation air
cooling and air heating coils certification program, which is
McQuay Cat 565-2
Engineering Guide Specification
1.06 DELIVERY, STORAGE, AND HANDLING
2.03 UNIT CONSTRUCTION
A Deliver, store, protect and handle products to site.
A Fabricate unit with 16 gauge channel posts and panels
B Accept products on site in factory-fabricated protective
containers, with factory-installed shipping skids. Inspect
for damage.
C Store in clean dry place and protect from weather and
construction traffic. Handle carefully to avoid damage to
components, enclosures, and finish.
PART 2: PRODUCTS
2.01 MANUFACTURERS
A The following manufacturers are approved for use. No
substitutions will be permitted.
secured with mechanical fasteners. All panels, access
doors, and ship sections shall be sealed with permanently
applied bulb-type gasket. Shipped loose gasketing is not
allowed.
1 Panels and access doors shall be constructed as a 2-inch
(50-mm) nominal thick; thermal broke double wall
assembly, injected with foam insulation for an R-value
of not less than R-13. The outer panel shall be
constructed of G90 galvanized [G60 painted
galvanized] [18-gauge] steel. The inner liner shall be
constructed of G90 galvanized [solid stainless] steel.
2 Panel deflection shall not exceed L/240 ratio at 125%
of design static pressure, maximum positive or negative
8inches of static pressure. Deflection shall be measured
at the midpoint of the panel height.
1 McQuay as basis of design
2 Miller-Picking
3 The casing leakage rate shall not exceed [.5 cfm per
3 Temtrol
4 Scott-Springfield
5 Racan-Carrier Company
2.02 GENERAL DESCRIPTION
A Configuration: Fabricate as detailed on drawings.
B Performance: Conform to ARI 430. See schedules on
prints. (NOTE: Above does not apply to fan array)
C Acoustics: Sound power levels (dB) for the unit shall not
exceed the following specified levels. The manufacturer
shall provide the necessary sound treatment to meet these
levels if required.
Octave Band at Center Frequency (Hz)
square foot of cabinet area at 6 inches of negative static
pressure or 5 inches of positive static pressure (.0025
m3/s per square meter of cabinet area at 1.24 kPa static
pressure)] [1% of supply air volume at design static
pressure up to positive or negative 8 inches (1.99 kPa)]
or [ASHRAE 111 CL 6 at design pressure up to positive
or negative 8 inches (1.99 kPa), where casing leakage
(cfm/100 ft2 of casing surface are) = CL × P0.65].
4 Module to module assembly shall be accomplished
with an overlapping, full perimeter, insulated, internal
splice joint sealed with bulb type gasketing on both
mating modules to minimize on-site labor and meet
indoor air quality standards.
5 [A sound baffle shall be secured to the inner liner and
Radiated
constructed of G90 galvanized perforated steel filled
with 3 lb. per cu ft. density, neoprene coated, glass fiber
insulation.]
Discharge
6 [An optional .125" thick aluminium treadplate shall be
63
Return
125
250
500
1000 2000 4000 8000
secured to the floor panel.]
7 [Entire unit shall have a [4] [6] [8] [10] [12]-inch full
perimeter base rail for structural rigidity and
condensate trapping. The following calculation shall
determine the required height of the baserail to allow
for adequate drainage. Use the largest pressure to
determine base rail height. [(Negative)(Positive) static
pressure (in)] (2) + 4" = required baserail height.
Should the unit baserail not be factory supplied at this
height, the contractor is required to supply a concrete
housekeeping pad to make up the difference.]
McQuay Cat 565-2
61
Engineering Guide Specification
B Access Doors shall be flush mounted to cabinetry, with
minimum of two six inch long stainless steel piano-type
hinges, latch and full size (4.5" minimum) handle assembly
(provide inspection window for fan section). Door shall
swing outward for unit sections under negative pressure
(inward for unit sections under positive pressure). Doors
limited from swinging inward (such as side access filter
sections) on positive pressure sections, shall have a
secondary latch to relieve pressure and prevent injury upon
access.
C Construct drain pans from [microbial resistant coated
galvanized steel] [stainless steel] with cross break and
double sloping pitch to drain connection. Provide drain
pans under cooling coil section [fan section]. Drain
connection centerline shall be a minimum of 3" above the
base rail to aid in proper condensate trapping. Drain
connections that protrude from the base rail are not
acceptable. There must be a full 2" thickness of insulation
under drain pan.
2.04 SUPPLY / RETURN FANS
A Provide [DWDI forward-curved] [DWDI airfoil] [belt-
drive airfoil plenum] [direct-drive airfoil plenum] [fan
array] supply [return] fan(s). Fan assemblies including fan,
motor and sheaves shall be dynamically balanced by the
manufacturer on all three planes and at all bearing supports.
Manufacturer must ensure maximum fan RPM is below the
first critical speed.
Fan array
1 Fan array shall have [three] [four] [six], 11 blade direct
drive, [class II] [class III] fans with [1" spring isolation]
and all painted construction
2 Walk in access section placed downstream [with motor
removal hoist].
3 [Manual block-off] [Isolation damper] mounted
upstream of fan for isolation of individual fans.
4 Single source power motor control panel with short
circuit protection [Non-fused disconnect] factory wired
from panel to motors in conduit. McQuay brand VFD’s
[2 for 4 fans] [3 for 3 fans] [3 for 6 fans] [Fan on-off
and speed control by others shall be provided.
Multiple direct drive fans
1 Unit shall have [two] [three] [9] [12] blade direct drive
class II fans with [2" spring isolation] [rubber-in-shear
isolation (fan sizes 36 and smaller)] [2" seismic
isolation].
62
2 [Manual block-off] [Isolation damper [with actuator]]
mounted upstream of fan for isolation of individual
fans.
3 [Single source power motor control panel with short
circuit protection and [Non-fused disconnect] [fused
disconnect] [Circuit breaker] factory wired from panel
to motors in conduit. Variable speed control by
[McQauay brand VFD(s)] [ABB] [Danfoss].] [Fan onoff and speed control by others shall be provided.]
B Bearings shall be self-aligning, grease lubricated, ball or
roller bearings with extended copper lubrication lines to
access side of unit. Grease fittings shall be attached to the
fan base assembly near access door. If not supplied at the
factory, contractor shall mount copper lube lines in the
field.
C Fan and motor shall be mounted internally on a steel base.
Factory mount motor on slide base that can be slid out the
side of unit if removal is required. Provide access to motor,
drive, and bearings through hinged access door. Fan and
motor assembly shall be mounted on [rubber-in-shear
vibration type isolators inside cabinetry.] [2" deflection
spring vibration type isolators inside cabinetry] [unit base,
rigid mounted.] [Seismic snubbers shall be provided.]
2.05 BEARINGS AND DRIVES
(Not applicable for fan array or direct drive fans)
A Bearings: Basic load rating computed in accordance with
AFBMA - ANSI Standards, [L-50 life at 200,000 hours –
all DWDI fans] [L-50 life at 500,000 hours – DWDI fans
on unit sizes 003 - 035], [L-50 life at 400,000 hours all beltdrive airfoil plenum fans and DWDI fans on unit sizes
greater than 035] [L-50 life 1,000,000 hours – DWDI fans
on unit sizes 003 – 035] [L-50 life at 600,000 hours – all
inline fans], heavy duty pillow block type, self-aligning,
grease-lubricated ball bearings.
B Shafts shall be solid, hot rolled steel, ground and polished,
keyed to shaft, and protectively coated with lubricating oil.
Hollow shafts are not acceptable.
C V-Belt drives shall be cast iron or steel sheaves,
dynamically balanced, bored to fit shafts and keyed. [Fixed
sheaves, matched belts, and drive rated based on motor
horsepower] [Variable and adjustable pitch sheaves
selected so required RPM is obtained with sheaves set at
mid-position and rated based on motor horsepower.
Contractor to furnish fixed sheaves at final RPM as
determined by balancing contractor]. Minimum of 2 belts
shall be provided on all fans with 10 HP motors and above.
Standard drive service factor shall be [1.1 S.F. (for 1/4 HP –
7.5 HP)] [1.3 S.F. (for 10HP and larger)], calculated based
McQuay Cat 565-2
Engineering Guide Specification
2.06 ELECTRICAL
A The air handler(s) shall be ETL and ETL-Canada listed by
Intertek Testing Services, Inc. Units shall conform to binational standard ANSI/UL Standard 1995/CSA Standard
C22.2 No. 236.
B Wiring Termination: Provide terminal lugs to match branch
circuit conductor quantities, sizes, and materials indicated.
Enclosed terminal lugs in terminal box sized to NFPA 70.
C [Provide [marine light] [marine light and GFI receptacle] in
[fan] [each] section mounted and wired to a junction box
and on-off switch mounted on the outside of the cabinet.
D Fan motors shall be [1200] [1800] [3600] rpm, [open drip-
proof (ODP)] [ totally enclosed fan-cooled (TEFC)] [1800/
1200 rpm, 2 Speed/2 Winding (ODP) (TEFC)] [1800/900
rpm, 2 Speed/1 Winding (ODP)(TEFC)] type. Motors shall
be [standard efficiency.] [high efficiency to meet EPAct
requirements.] [premium efficiency.] Electrical
characteristics shall be as shown in schedule.
E [Air handler manufacturer shall provide and mount conduit
and wiring from each fan motor terminated at [an external
junction box.] [a non-fused] [a fused] [a circuit breaker]
type disconnect switch factory wired. The disconnect
switch shall be furnished with a rotary or switch-blade type
handle that can be padlocked in the ‘off’ position.] [A
motor starter [IEC] [NEMA] type shall be provided.]
F [Air handler manufacturer shall provide and mount
[McQuay] [ABB] [Danfoss] variable speed drive with
electrical characteristics as shown on project schedule. [A
two-contactor type bypass switch shall be provided.] [A
line reactor shall be provided.]
G [Air handler manufacturer shall provide and mount a hand-
off-auto (HOA) switch.]
H [Air handler manufacturer shall provide and mount a [24V]
[120V] transformer.]
I [Manufacturer must provide ASHRAE 90.1 Energy
Efficiency equation details for individual equipment to
assist Building Engineer for calculating system
compliance.]
J [Ultraviolet Light Germicidal Irradiation (UVGI) System
1 The UVGI surface irradiation system shall consist of
heavy duty, factory assembled and tested light fixtures
that emit short wave UVC light (200 nm – 270 nm)
2 Constructed and tested for HVAC environments: UL
listed at 55°F to 135°F with airflow velocities up to
1000 FPM. Independently tested to verify output and
performance. UVGI system shall have UL Approval
per Category Code ABQK (Accessories, Air Duct
Mounted) UL Standards: UL153, UL1598 & UL1995.
McQuay Cat 565-2
3 Assembly shall consist of double ended UVC florescent
lamp and housing, power source and sockets shall be
UL Drip proof construction.
4 The enclosure shall be made of drip-proof construction
from galvanized steel. The ballast shall be a selfcontained electronic type. The enclosure shall include
safety mechanical interlocks which do not allow the
UV assembly to light unless installed on its track. The
multiple UV assemblies shall connect via interlock.
5 UVC Lamp shall be a standard output hot cathode, low
pressure T8, double ended UVC lamp. Lamps shall be
constructed with a thick wall glass of soda barium UV
transparent glass with a base of metal. Lamps shall
have 5.5 milligrams or less of mercury.
6 Lamps shall produce adequate UV output and operate
in environments of temperatures between 55°F to
135°F. Lamps shall produce a minimum of 80% of
initial UV output at end of life (9000 hours minimum).
7 Power source shall be 120 VAC 60hz. Power
connections shall be via a provided j-box or line cord
from one end of the UV fixture. UV fixtures shall
electrically connect via interlocks.
8 Installation shall be such that the cumulative sum
length of UV fixtures end-to-end shall equal the coil
width +/- three (3) inches. Modular coil system shall be
installed and wired so that the entire surface of the coil
and drain pan is bathed by UVC. System shall be
installed using “tracks” to allow UV fixture to slide into
place, for ease of access during installation and annual
maintenance. System shall be installed 8"-20" (14"
ideal) from coil surface. System shall be installed
utilizing one row of lamps for every 48" of coil height.
System shall incorporate safety “cut-off” switches on
access doors.
9 Approved manufacturers: UltraViolet Devices, Inc.
(UVDI).
2.07 COOLING AND HEATING COIL SECTIONS
A Provide access to coils from [both sides] [connection side]
[opposite side] of unit for service and cleaning. Enclose
coil headers and return bends fully within unit casing. Unit
shall be provided with coil connections that extend a
minimum of 5" beyond unit casing for ease of installation.
Drain and vent connections shall be provided exterior to
unit casing. Coil connections must be factory sealed with
grommets on interior and exterior and gasket sleeve
between outer wall and liner where each pipe extends
through the unit casing to minimize air leakage and
condensation inside panel assembly. If not factory
packaged, Contractor must supply all coil connection
grommets and sleeves. Coils shall be removable through
side and/or top panels of unit without the need to remove
and disassemble the entire section from the unit.
63
Engineering Guide Specification
1 Identify fin, tube & casing material type and thickness.
2 Show coil weights (shipping & operating).
3 State air and fluid flow amounts with its associated
pressure drops. For steam coils, indicate steam pressure
and condensate load.
4 Indicate entering & leaving air and water temperatures.
For refrigerant coils, indicate saturated suction
temperature (SST).
5 [Manufacturer to provide and mount ultraviolet lights
on the leaving air side of the cooling coil(s) and over
the drain pan to meet GSA 2003 Facilities Standard 5.9 HVAC Systems and Components and agency
approved to UL category Code ABQK specification,
HVAC Accessories, Air Duct Mounted.]
B Water Coils:
1 Certification - Acceptable water coils are to be certified
in accordance with ARI Standard 410 and bear the ARI
label. Coils exceeding the scope of the manufacturer’s
certification and/or the range of ARI’s standard rating
conditions will be considered provided the
manufacturer is a current member of the ARI AirCooling and Air-Heating Coils certification programs
and that the coils have been rated in accordance with
ARI Standard 410. Manufacturer must be ISO 9002
certified.
2 Headers shall consist of seamless copper tubing to
assure compatibility with primary surface. Headers to
have intruded tube holes to provide maximum brazing
surface for tube to header joint, strength, and inherent
flexibility. Header diameter should vary with fluid flow
requirements.
3 Fins shall have a minimum thickness of [[0.0075"]
[0.0095"] of aluminum] or [0.006"] [0.0075"] [0.0095"]
copper]] plate construction. Fins shall have full drawn
collars to provide a continuous surface cover over the
entire tube for maximum heat transfer. Tubes shall be
mechanically expanded into the fins to provide a
continuous primary to secondary compression bond
over the entire finned length for maximum heat transfer
rates. Bare copper tubes shall not be visible between
fins.
4 Coil tubes shall be 5/8 inch (16mm) OD seamless
copper, 0.020" [0.025"] [0.035"] [0.049"] nominal tube
wall thickness, expanded into fins, brazed at joints.
Soldered U-bends shall be provided to minimize the
effects of erosion and premature failure having a
minimum tube wall thickness of .025".
64
5 Coil connections shall be [N.P.T. threaded carbon steel]
[butt weld carbon steel] [O.D. sweat copper] [threaded
red brass] with connection size to be determined by
manufacturer based upon the most efficient coil
circuiting. Vent and drain fittings shall be furnished on
the connections, exterior to the air handler. Vent
connections provided at the highest point to assure
proper venting. Drain connections shall be provided at
the lowest point to insure complete drainage and
prevent freeze-up.
6 Coil casings shall be a formed channel frame of
[galvanized steel] [stainless steel]. Water heating coils,
1 & 2 row only (sans 5M type) shall be furnished as
uncased to allow for thermal movement and slide into a
pitched track for fluid drainage.
C Refrigerant Coils:
1 Certification - Acceptable refrigerant coils are to be
certified in accordance with ARI Standard 410 and bear
the ARI label. Coils exceeding the scope of the
manufacturer’s certification and/or the range of ARI’s
standard rating conditions will be considered provided
the manufacturer is a current member of the ARI AirCooling and Air-Heating Coils certification programs
and that the coils have been rated in accordance with
ARI Standard 410. Manufacturer must be ISO 9002
certified.
2 Coils designed for use with Refrigerant [R-22] [R-
134a] [other]. Fins shall have a minimum thickness of
[[0.0075"] [0.0095"] of aluminum] or [0.006"]
[0.0075’] [0.0095"] copper]] plate construction with
full drawn collars to provide a continuous surface cover
over the entire tube for maximum heat transfer. Tubes
shall be mechanically expanded into the fins to provide
a continuous primary-to-secondary compression bond
over the entire finned length for maximum heat transfer
rates. Bare copper tube shall not be visible between
fins.
3 Refrigerant coils shall be provided with round seamless
5/8" O.D. copper tubes on 1-1/2" centers, staggered in
the direction of airflow. All joints shall be brazed.
4 Sweat type copper suction connections located at the
bottom of the suction headers for gravity oil drainage.
Coils shall be uniformly circuited in a counterflow
manner for [single circuit] [row] [face] [interlaced]
[interlaced face split] capacity reduction. Pressure type
liquid distributors used. Coils shall be tested with 315
pounds air pressure under warm water, and suitable for
250 psig working pressure.
McQuay Cat 565-2
Engineering Guide Specification
D Steam Coils:
1 Certification - Acceptable steam coils are to be certified
in accordance with ARI Standard 410 and bear the ARI
label. Coils exceeding the scope of the manufacturer’s
certification and/or the range of ARI’s standard rating
conditions will be considered provided the
manufacturer is a current member of the ARI AirCooling and Air-Heating Coils certification programs
and that the coils have been rated in accordance with
ARI Standard 410. Manufacturer must be ISO 9002
certified.
2 Fins shall have a minimum thickness of [[0.0075"]
[0.0095"] [0.012" (1" dia. tubes only)] of aluminum] or
[0.006" (5/8" tube dia. only)] [0.0075"] [0.0095"]
copper]] with full drawn collars to provide a continuous
surface cover over the entire tube for maximum heat
transfer. Tubes shall be mechanically expanded into the
fins to provide a continuous primary-to-secondary
compression bond over the entire finned length for
maximum heat transfer rates. Bare copper tubes shall
not be visible between fins.
3 Steam coils shall be provided with round seamless [5/8"
O.D. copper [0.020"] [0.025"] [0.035"] [0.049"] or [1"
O.D. copper [0.025"] [0.049"] tubes. Tubes on two-row
coils are staggered in the direction of airflow. All joints
shall be brazed.
4 Steam coil headers shall be made of nonferrous
materials using seamless copper tubing with intruded
tube holes to permit expansion and contraction without
creating undue stress or strain. Both the supply and
return headers shall be completely encased by the coil
casing. Coil shall be pitched in the unit to assure
positive condensate drainage. Steam coils shall be
furnished as uncased to allow for thermal movement
and slide into a pitched track for drainage. Orificed
baffle plates shall be installed in the supply connection
to ensure proper diffusion of entering steam.
5 Steam coils shall be tested with 315 pounds air pressure
under warm water and suitable for 150 psig working
pressures.
E [Horizontal Tube Integral Face and Bypass Coil
1 Horizontal tube integral face and bypass coils shall
consist of multiple alternating heating sections and
bypass sections, with airflow distributed to each by
interlocking wrap-a-round “clamshell” style dampers;
linkage to be stainless steel. Coils shall be suitable for
hot water or steam and continuous operation at 200 psig
and 400 F degrees. Heating elements to consist of
McQuay Cat 565-2
multi-row, multi-pass extended heat transfer surface;
coil shall carry ARI 410 certification as to ratings.
Welding and brazing shall be done by ASME qualified
personnel.
2 Tubes shall be 5/8" diameter seamless copper, .035"
average wall thickness. Fins shall be continuous
patterned plate, .0075" thick aluminum with full fin
collars. Joints shall be silver brazed.
3 Headers shall be single piece carbon steel, with no
separate disks or caps welded or brazed into header
ends. Connections shall be steel and shall be welded to
header barrels.
4 Casings and dampers shall be minimum 16 gauge mill
galvanized steel; top and bottom casing panels to be
double flanged for stacking. End casings shall have
smooth, embossed tube holes to provide adequate
bearing surface for tubes to avoid abrasion during
expansion and contraction. Flexible connectors shall
not be required.]
F [Vertical Tube Integral Face and Bypass Coil
1 Vertical tube integral face and bypass coils shall consist
of multiple alternating heating sections and bypass
sections, with airflow distributed to each by
interlocking wrap-a-round “clamshell” style dampers;
linkage to be stainless steel. Coils shall be suitable for
hot water or steam and continuous operation at 200 psig
and 400 F degrees. Heating elements to consist of
multi-row, multi-pass extended heat transfer surface;
coil shall carry ARI 410 certification as to ratings.
Welding and brazing shall be done by ASME qualified
personnel.
2 Hot water applications shall be furnished with 5/8"
outside diameter tubes with .035" tube wall thickness.
Steam applications shall be furnished with a non-freeze,
tube-within-a-tube design that consists of an outer tube
that is 5/8"outside diameter tubes with .035" tube wall
thickness and an inner tube that is 3/8" outside diameter
with .020" wall thickness. Fins shall be a helical fin
design that is ½" high, .012" thick copper, solder
coated.
3 Supply and Return headers shall be located at the base
of the coil. Hot water coils shall employ return bends.
Steam coils shall be capped to allow free thermal
movement. Headers shall be carbon steel with male
pipe thread connections.
4 The casing shall be 12 gauge galvanized steel. The
dampers shall be 16 gauge galvanized steel with
aluminum hinges, stainless steel pins, linkage &
65
Engineering Guide Specification
2.08 PARTICULATE FILTERS
A [Filter section with filter racks and guides with hinged and
latching access doors on either, or both sides, for side
loading and removal of filters] [Filter section with front
loading frames and clips].
B Filter media shall be UL 900 listed, Class I or Class II.
C [Flat] [Angle] arrangement with [2", 50mm] [4", 100mm]
deep [pleated] [disposable] panel filters.
D [Bag] [Cartridge] type arrangement with holding frames
suitable for [2" (50 mm)], [4" (100 mm)] prefilter and final
filter media and blank-off sheets, extended surface [bag]
[cartridge] media filters with [60-65] [80-85] [90-95]
percent dust spot efficiency. Bag filter media [12" (305 mm
)] [15" (381 mm)] [19" (483 mm)] [22" (559 mm)] [30"
(762 mm)] [36" (914 mm)] deep. Cartridge filter media is
[4" (50 mm)] [12" (305 mm)] deep. [Provide microbial
resistant Intersept® coating on all filters.] Designed for
[side] [front] loading of filters.
E [Manufacturer shall supply minihelic gauge to read
pressure drop across the filter bank for scheduling filter
replacement. Design shall be equal to a Dwyer Minihelic 2
and be recessed into the cabinet to minimize chances for
damage during shipment and installation.]
F [Manufacturer to provide and mount ultraviolet lights on
the entering air side of the filter. Ultraviolet lights must
meet agency approved to UL category Code ABQK
specification, HVAC Accessories, Air Duct Mounted.]
2.09 [GAS-PHASE FILTRATION
A Side access tracks shall accommodate AAF International’s
[Cleanroom Grade (CG)] [Medium Duty (MD)] [Heavy
Duty (HD)] gas-phase filter cassettes.
B The filter enclosure shall include side access extruded
aluminum tracks to support the gas phase filter cassettes.
Each gas phase filter shall be supported by two upper and
lower extruded aluminum tracks i.e. two support tracks at
the inlet face and two support and sealing tracks at the
outlet face.
C These tracks shall incorporate formed profile features to
ensure that the filters are properly sealed into the enclosure.
Simple ‘L’ tracks or angle supports that permit high leakage
and inefficient sealing integrity are not permitted. The filter
tracks shall ensure that the gas phase filter cassettes are
permanently fixed in position and sealed to minimize bypass of air around the filters and to ensure that the entire
contaminated air-stream passes through the filters.
D Each filter track shall include two hard-extruded type POM
plastic strips embedded into, and protruding above, the
horizontal surface of the track. These strips will minimize
the surface area in contact with the filter cassettes and
provide a plastic sliding surface with inherent lubricating
properties to minimize friction and facilitate ease of
installation and removal when sliding the gas phase filters
into and out of the tracks.
66
E The filter outlet face (or downstream) upper and lower
support and sealing tracks will each include a tubular,
compressible, EPDM gasket inserted into a formed cavity
in the sealing face of the track. Each of these tracks shall
also include a vertical extruded aluminum flange that shall
guide the gas phase filter into position and position the
filter to guarantee that the tubular gasket is adequately
compressed to seal between the filter and the track to
minimize any by-pass of unfiltered air. The tubular gasket
shall be treated with a polymer coating to reduce friction
when sliding the gas phase filter into the track.
F The vertical flange in the track shall fit into notches located
on the gas phase filter cassette and ensure that the cassette
is properly positioned in the track. The tubular gasket shall
be compressed by the action of installing the gas phase
cassette into the side access tracks.
G The cassette shall be formed completely from injection
molded, recyclable (or incinerable), high-impact
polystyrene (HIPS). The plastic components that form the
cassette shall be connected together using internal high
pressure, snap-lock connectors formed into the connecting
components. No glues or solvents shall be allowed to be
used in the manufacture or construction of the cassette to
prevent contamination of both the chemical media and the
air-stream by off-gassing of VOCs.
H All surfaces of the cassette should be true and offer external
squareness. The cassette construction shall be of precision
close tolerance construction having external dimensional
and square ness tolerances of +/- 2mm. The cassette shall
be capable of operating effectively in humidity range of 5%
- 99% and temperature range of -5ºF (-20ºC) to 130ºF
(55ºC).
I Chemical media shall be supported between
aerodynamically tapered screens with very low drag
coefficient (for energy efficiency). Injection molded highimpact polystyrene screens shall form individual media
beds assembled into a V-bank configuration.
J No nose cavities shall be allowed in cassettes. The inlet and
outlet screens shall be parallel and the inlet and outlet face
areas shall be equal to ensure equal and complete
utilization of the chemical media. The screen openings
shall have a maximum width of 2-mm to ensure full
retention of the chemical media and to eliminate
downstream fouling.
K The screens shall be structurally reinforced with molded
plastic ribs to minimize deflection of the screen caused by
the weight of the chemical media. The ribs shall span in
both directions and shall be orthogonal to each other. The
inlet and outlet screens shall have a minimum thickness of
1.90-mm. A spacer shall be utilized at 150-mm intervals to
accurately distance the two screens and maintain
squareness and a constant bed depth after filling with
chemical media.
McQuay Cat 565-2
Engineering Guide Specification
L The side plates of the cassette shall be completely flat and
planar and without protrusions to ensure that adjacent
cassette mate accurately. All flanges shall be internal. No
external flanges shall used. A 25mm wide gasket shall be
mounted on each side plate to seal between adjacent
cassettes. A scribed line formed into the side plate during
molding shall determine the accurate positioning of the
gasket. The gasket shall extend completely from the bottom
to the top of the side plate and the edge of the gasket shall
be contiguous with the face of the cassette. The gasket
material shall be adhesive coated (with an acryl-based
adhesive), semi-closed-cell EPDM foam and shall have a
Durometer of 50-70. The material shall have good
resistance to UV, humidity, high and low temperatures, and
chemicals such as acids and alkalis, and fats and grease.
M A V-shaped Butterfly® Gasket shall be located horizontally
along the upper and lower edges of the air leaving, or
sealing, face of the cassette when the cassette is oriented for
horizontal airflow. Two (2) 10-mm long, 0.5-mm thick,
flexible “wings” shall be molded into a 16-mm wide,
1.5mm thick, base. When the cassette is installed the wings
of the Butterfly® gasket shall engage and envelop the
tubular gasket that is installed in the extruded aluminum
track providing a complete seal. The Butterfly® gasket shall
be extruded Polyurethane plastic.
N No heavy metals (such as Cadmium) nor regulated
substances, such as CFC’s and halogen gases shall be used
during the manufacturing process nor be contained in the
product itself.
O Cassette side plates shall not incorporate the cassette filling
ports. Chemical media filling ports shall be located on the
face of the cassette. The ports shall be covered and sealed
using reinforced injection molded polypropylene covers.
The covers shall be fixed to the cassette at a minimum of
three locations, being each end and in the center, with high
strength, bayonet style, plastic rivets. The bayonet shall
cause the rivet to expand and form a tight connection. The
end of the bayonet shall be barbed to prevent withdrawal
and loosening of the connection, it shall also completely
plug the center of the rivet and prevent air leakage through
the rivet.
P The sealing perimeter of the cassette face shall be
completely planar with top, bottom and side flange faces
being completely flush. No setbacks or gaps shall be
allowed. The outer edges of the top and bottom flanges
shall be completely flush with the top and bottom surfaces
of the cassette.
Q The cassette shall include a precision molded slot
positioned to accept a guide located on the surface of the
support track. The slot and guide combination will ensure
that the cassette is accurately positioned in the mounting
track ensuring full contact and proper compression of the
track-mounted gasket.
McQuay Cat 565-2
R Physical characteristics and performance shall be as
follows: [Cleanroom Grade (CG) Cassette – Nominal size
24"H × 12"W × 12"D with media holding capacity of 0.7
cubic feet in a 1" thick ‘V’ bank arrangement. Rated
pressure drop at 500 fpm shall be [.047 utilizing
SAAFOxidant] [0.56 utilizing SAAFCarb] [0.57 utilizing
SAAFBlend] Chemical Media. Chemical media utilization
index shall be 92% or greater.]
[Medium Duty (MD) Cassette – Nominal size 6"H × 24"W
× 18"D with media holding capacity of 0.5 cubic feet in a
1" thick ‘V’ bank arrangement. Rated pressure drop at 500
fpm shall be [.031 utilizing SAAFOxidant] [0.35 utilizing
SAAFCarb] [0.34 utilizing SAAFBlend] Chemical Media.
Chemical media utilization index shall be 92% or greater.]
[Heavy Duty (HD) Cassette – Nominal size 12"H × 24"W
× 12"D with media holding capacity of 1.0 cubic feet in a
3" thick ‘V’ bank arrangement. Rated pressure drop at 250
fpm shall be [.073 utilizing SAAFOxidant] [0.87 utilizing
SAAFCarb] [0.97 utilizing SAAFBlend] Chemical Media.
Chemical media utilization index shall be 92% or greater.]
2.10 ADDITIONAL SECTIONS
A [Mixing box section shall be provided with or without
factory mounted low leak airfoil blade outside and return
air dampers of galvanized steel in a galvanized frame.
Dampers shall be hollow core airfoil blades, fully gasketed
and have continuous vinyl seals between damper blades.
Dampers shall have stainless steel jamb seals along end of
dampers. Linkage and ABS plastic end caps shall be
provided when return and outside air dampers sized for full
airflow. Return and outside air dampers of different sizes
must be driven separately.]
B [Economizer section shall be provided with factory
mounted low leak hollow core airfoil blade outside air and
return air dampers, and exhaust damper. Dampers shall be
constructed of galvanized steel in a galvanized frame.
Outside and return dampers fully gasketed. Continuous
vinyl seals between damper blades. Stainless steel end seals
along end of dampers. Linkage and ABS plastic end caps
provided when return and outside air dampers are the same
size. Return and outside air dampers of different sizes or
very large dampers and exhaust dampers must be driven
separately.]
C [Access section shall provide access between components
shall be a minimum of [16" (406mm)] [24" (610mm)] [30"
(762mm)] [36" (914mm)] [42" (1067mm)] [48"
(1219mm)] [54" (1372mm)] deep. Access doors of
galvanized steel for flush mounting, with gasket, latch and
full size (minimum of 4.5") handle assembly. [Provide
[microbial resistant coated galvanized] [stainless] steel drip
pan in access section.] [Floor shall be lined with .125-inch
aluminum tread plate to accommodate walk-in weight of
service technician.]
67
Engineering Guide Specification
D [Diffuser section shall be mounted on leaving side of
supply fan section providing uniform air distribution across
downstream components. Perforated diffuser plate shall be
secured over blast area of fan to disperse airflow.]
E [Blender / air mixer section to provide proper air mixing
and distribution of the outside and return airstreams. Proper
spacing provided in the direction of airflow as
recommended by the blender manufacturer (Blender
Products or Kees).]
F [Sound attenuator section(s) shall be provided by the air
handling unit manufacturer as an integral section of the unit
to attenuate fan noise at the source. Provide acoustic
performance and air pressure drop as scheduled. Silencer
acoustic insulation shall be covered with perforated sheet
metal. [Provide [mylar] [tedlar] [fiberglass cloth] liner
between perforated sheet metal and acoustic insulation].
3 Steam dispersion panel consisting of a (one) horizontal
stainless steel header supplying steam to a bank of
closely spaced vertical tubes, as necessary to meet
absorption distance requirements, and to reduce
condensation losses.
4 Dual header systems creating unnecessary
condensation or systems needing to be installed on a
partition or requiring blank off plates are not
acceptable.
5 Header design shall be round tube to minimize pressure
drop. Square headers are not acceptable.
6 Steam inlet and condensate return located on the same
side and at the bottom of the header to allow single
point entry and floor mounting.
7 Headers shall be 304 stainless steel construction.
G [Manual section shall be provided by the air handling unit
8 Vertical 304 stainless steel distribution tubes shall be
manufacturer as an integral section of the unit for field
installation of special components. Section length to be
determined by component supplier.]
9 Distribution tubes shall include threaded standoffs for
H [[Inlet] [Discharge] plenum section shall be provided as the
[first] [last] section in the direction of airflow. The plenum
shall provide single or multiple [top] [end] [bottom]
openings.]
I [Face and bypass section shall be provided to modulate
airflow through and around heat transfer coils. Dampers
shall be an integral part of the unit assembly. [Internal face
and bypass shall be contained in the standard cabinet
height] [External face and bypass arrangement shall be
provided with factory provided bypass duct of same cabinet
construction as the remainder of the unit. Field installed
bypass ducts are not acceptable]. Blank-off and division
sheets, internal linkage, access [panel] [doors] installed by
unit manufacturer. Face and bypass dampers shall be of low
leak design, opposed blade, with vinyl bulb edging and
stainless steel edge seals, galvanized steel frame and axles
in self-lubricating nylon bearings.]
J [ Humidifier Steam Dispersion Panel (Short Absorption
Manifold, SAM-e)
1 Short Absorption Manifold designed for atmospheric
steam humidifiers or pressurized steam from a boiler, to
directly inject the steam into ducted air for
humidification. Performance shall be factory selected
based on scheduled criteria.
2 Absorption distance characteristic shall prevent water
provided to promote condensate evacuation. Horizontal
distributor tubes are not acceptable.
trouble free attachment to factory supplied support
bracket.
10 Stainless steel nozzle inserts ensure condensate free
steam is discharged from the center of the distribution
tubes. Systems without nozzle inserts, or other than
stainless steel, are not acceptable.
11 Stainless steel nozzle inserts shall have metered
orifices, sized to provide even distribution of the
discharged steam, spaced for optimum steam
absorption.
12 Comply with ARI 640, “Standard for Commercial and
Industrial Humidifiers.”]
K. [Energy Recovery ]
1 [Fixed Plate air-to-air heat exchanger shall be
constructed of rigid thermally bonded plates separated
by aluminum spacers. Exposed folded or crimped edges
are not acceptable. The exchanger corrugations shall be
bonded to the flat plates with a thermal adhesive and be
capable of withstanding pressure differentials of up to
15" w.g. without deforming air passages. The entire
heat transfer surface shall be capable of visible
inspection and cleaning. Factory personnel shall
calculate fixed plate temperature and pressure drop
performance.]
accumulation on any surfaces beyond the drain pan
downstream of the steam dispersion panel.
68
McQuay Cat 565-2
Engineering Guide Specification
2 [Energy recovery wheel shall be constructed of
corrugated synthetic fibrous media, with a desiccant
intimately bound and uniformly and permanently
dispersed throughout the matrix structure of the media.
Rotors with desiccants coated bonded, or synthesized
onto the media are not acceptable due to delaminating
or erosion of the desiccant material. Media shall be
synthetic to provide corrosion resistance and resistance
against attack from laboratory chemicals present in
pharmaceutical, hospital, etc. environments as well as
attack from external outdoor air conditions. Coated
aluminum is not acceptable. Face flatness of the wheel
shall be maximized in order to minimize wear on inner
seal surfaces and to minimize cross leakage. Rotor shall
be constructed of alternating layers of flat and
corrugated media. Wheel layers should be uniform in
construction forming uniform aperture sizes for airflow.
Wheel construction shall be fluted or formed
honeycomb geometry so as to eliminate internal wheel
bypass. Wheel layers that can be separated or spread
apart by airflow are unacceptable due to the possibility
of channeling and performance degradation. The
minimum acceptable performance shall be as specified
in the unit schedule.
Desiccant Material: The desiccant material shall be a
molecular sieve, and specifically a 4A or smaller
molecular sieve to minimize cross contamination.
Wheel Media Support System: The wheel frames shall
consist of evenly spaced steel spokes, galvanized steel
outer band and rigid center hub. The wheel construction
should allow for post fabrication wheel alignment.
Wheel Seals: The wheel seals shall be full contact
nylon brush seals or equivalent. Seals should be easily
adjustable.
Wheel cassette: Cassettes shall be fabricated of heavy
duty reinforced galvanized steel or welded structural
box tubing. [Cassettes shall have a built in adjustable
purge section minimizing cross contamination of
supply air.] Bearings shall be inboard, zero
maintenance, permanently sealed roller bearings, or
alternatively, external flanged or pillow block bearings.
Drive systems shall consist of fractional horsepower
AC drive motors with multi-link drive belts.
[Face and bypass dampers shall be furnished.]
Certification: The wheel shall be ARI certified by the
energy recovery wheel supplier to ARI Standard 1060
and must bear the ARI certification stamp. Private
independent testing performed "in accordance with"
McQuay Cat 565-2
various standards is not a substitute for ARI
certification and shall not be accepted. The wheel shall
be listed or recognized by UL or equivalent.]
3 [Energy recovery wheel heat exchanger shall be
constructed of alternate layers of corrugated and flat
aluminum sheet material. Both sides of the exchanger
shall be completely smooth with less then 0.005"
variation between alternate layers to allow for optimum
sealing surface for brush seals. The rotor shall have
smooth air channels to ensure laminar airflow for lowpressure drops. Dry particles up to 900 microns shall
pass freely through the rotor without clogging the
media. The rotor media shall be capable of being
cleaned with low temperature steam without degrading
unit performance. The rotor media must be made of
aluminum that is coated to prohibit corrosion. All
surfaces shall be coated with a non-migrating absorbent
specifically developed for the selective transfer of
water vapor.
Performance shall be as scheduled and verified by
manufacturer. Assuming equal sensible and latent
recovery effectiveness shall not derive performance.
The rotor housing shall be constructed using a heavyduty extruded and anodized aluminum tube frame
(rotors less than 42" shall have a heavy duty galvanized
frame without insulation) with double wall galvanized
sheet metal panels with fiberglass insulation.
Adjustable brush seals must be provided along the
periphery of the rotor and between the inlet and outlet
air passages to effectively prevent air leakage and
cross-contamination between airflows. Total airflow
between air streams from leakage and purge shall be
less than 10% at 2.5"w.g. differential pressure between
airflows. Rotor and casing shall be reinforced to
prevent deflection from differential pressures to less
than 0.03 inches. All rotors shall be mounted on sealed
permanently lubricated spherical bearings. All rotors
over 80" in diameter must have flanged or pillow block
bearings that can be serviced or replaced without
removal of the rotor from the case.
[The unit must be provided with a factory set, field
adjustable purge sector designed to limit cross
contamination at qualified appropriate design
conditions to less than 0.04 percent of the exhaust air
stream concentration. Independent laboratory
evaluations must indicate purge sector configurations,
rotor construction, gasses, air pressure differentials,
rotor speeds and other phenomena that constitute
“appropriate design conditions” required to limit cross-
69
Engineering Guide Specification
The rotor drive system shall consist of a self-adjusting
belt around the rotor perimeter driven by an AC motor
with gear reduction. The variable speed drive shall be
specifically designed for heat wheel applications and
include: an AC inverter, soft start/stop, rotation
detection w/alarm contacts, automatic self-cleaning jog
cycle, and self testing capability. The speed controller
shall be capable of accepting a potentiometer, VDC, or
mA control signal.
[The temperature control system shall consist of an
integral control panel with remote temperature sensors
mounted in each of the four air streams to monitor
exchanger performance. The control shall modulate
rotor speed to (1) prevent frost build-up, (2) reduce heat
recovery for economizer mode, and (3) switch to
maximum heat recovery when outdoor temperature is
higher than indoor temperature. A digital display
keypad for monitoring temperatures and changing set
points shall be included.]
differential. Leakage rate tested in accordance with AMCA
Standard 500.
2.12 CONTROLS
A [Manufacturer shall furnish and mount 24V control
components that shall be terminated at a sealed junction
box on the unit exterior of each section in which the
component is mounted. The components include low
temperature limits (freeze-stats), air proving switches,
discharge air, return air, exhaust air temperature sensors,
and CO2 sensors as specified in the control schedule. The
control components must be compatible with [Alerton]
[Automated Logic] [Honeywell] [Invensys] [Johnson
Controls] [Siemens] as indicated in the control
specification. [The manufacturer shall furnish and mount
[Belimo] [Johnson Controls] actuators for all dampers.]
PART 3: EXECUTION
[Face and bypass dampers shall be furnished.]
3.01 INSTALLATION
ARI Certification: Sensible and latent recovery
effectiveness must be clearly certified by the energy
recovery wheel supplier through ARI in accordance
with ARI Standard 1060.]
A Install in accordance with manufacturer’s Installation &
Maintenance instructions.
3.02 ENVIRONMENTAL REQUIREMENTS
A Do not operate units for any purpose, temporary or
2.11 DAMPERS
A Damper Leakage: Leakage rate shall be less than two tenths
of one percent leakage at 2 inches static pressure
permanent, until ductwork is clean, filters are in place,
bearings lubricated, and fan has been test run under
observation.
3.03 EXTRA MATERIALS
70
McQuay Cat 565-2
McQuay Training and Development
Now that you have made an investment in modern, efficient McQuay equipment, its care should be a high priority.
For training information on all McQuay HVAC products, please visit us at www.mcquay.com and click on training, or
call 540-248-9646 and ask for the Training Department.
Warranty
All McQuay equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product
Warranty. Consult your local McQuay Representative for warranty details. Refer to Form 933-430285Y. To find
your local McQuay Representative, go to www.mcquay.com.
This document contains the most current product information as of this printing. For the most up-to-date product
information, please go to www.mcquay.com.
Products manufactured in an ISO certified facility.
© 2011 McQuay International • www.mcquay.com • 800-432-1342
10/11
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