McQuay 5BB User Manual
McQuay® Water Heating & High
Capacity Booster Coils
Types HI-F5 & E-F5
Catalog
412-6
HI-F5 & E-F5 water hea ting and
high capacity booster coils
TM
SelectT OOLS
for
Contractor Coils
McQuay offers a wide variety of standard fin spacings, row
and circuiting combinations. For optimum coil selection,
McQuay's SelectTOOLS
gram makes it easy to select the most economical standard
or special application coil to meet your job requirements.
Contact your local McQuay representative for a coil selection
that meets the most exacting specification.
TM
for Contractor Coils selection pro-
Contents
SelectTOOLSTM..................................................................3
ARI certification..................................................................3
Nomenclature ....................................................................4
Standard availability chart..................................................5
Circuiting arrangements.....................................................6
Design features..................................................................7
General specifications — 5W & 5B coils............................8
Application recommendations............................................9
Cleanable coils ..................................................................9
Sample coil selection.......................................................10
ARI certification
McQuay® water heating and
booster coils are certified in
accordance with the forced circulation air cooling and air heating
coil certification program, which
is based on ARI Standard 410.
Note: Special application coils may be outside the scope of
ARI Standard 410.
Conversion of air volume to standard air .........................11
General formulas..............................................................12
Heat transfer values M
Hl-F5 selection data heat transfer values, R
E-F5 selection data heat transfer values, Rf....................17
Air pressure drop......................................... ... ..................18
Water pressure drop ..............................................19,20,21
Dimensional data, HI-F5 & E-F5 coils............22, 23, 24, 25
Dimensional data, booster coils, 5B...................... 26,27,28
Engineering guide specifications..................................... 29
..............................................13, 14
t
.............15, 16
f
“McQuay" and "HI-F" are registered trademarks of McQuay International, Minneapolis, MN.
The McQuay HI-F fin surface is covered by U.S. Patent No. 3,645,330.
Copyright ©2006 McQuay International. All rights reserved throughout the world.
Bulletin illustrations cover the general appearance of McQuay International products at time of publication
and we reserve the right to make changes in design and construction at any time without notice.
McQuay Catalog 412-6 3
A pioneer in corrugated fin de velopment
HI-F Means High Efficiency
A principal factor governing fin heat transfer efficiency is the
boundary layer film of air adhering to any fin surface. This
boundary layer insulates the fin, severely reducing the rate
of heat exchange.
The advanced rippled-corrugated HI-F design creates a
state of continuous turbulence which effectively reduces the
boundary layer formation. The exclusive rippled edge
instantly deflects the incoming air to create initial turbulence. A succession of corrugations across the fin depth, in
conjunction with the staggered tubes, increases the turbulating effect and eliminates the "dead spots" behind the
tubes. In this manner, the HI-F design establishes a new
high in heat transfer efficiency yielding sharply increased
performance. The rippled fin edge also strengthens the fin
edge and provides a pleasing overall appearance.
E-F Means Energy Efficient
The term "energy efficient," which is used to describe how
well a system utilizes energy, has become a common
expression in the HVAC industry.
With costs of energy rising, the need for cutting operating
expenses is apparent. Lowering the air pressure drop
across the face of the coil will reduce the fan brake h orsepower requirement and fan motor electrical demand. The
need to cut operating energy expenses is met by the E-F fin
surface. The smoother fin design of the E-F surface results
in lower operating costs over the life of the equipment.
Nomencla ture
COIL TYPE
Water: 5M, 5W, 5K, 5P, 5Q
Booster: 5B
CIRCUITING
Water:
Q = 1/4 Serpentine
H = 1/2 Serpentine
L = 3/4 Serpentine
S = 1 Serpentine
M = 1-1/2 Serpentine
D = 2 Serpentine
B = 3” Tube Center
Booster:
S=1Circuit
D=2 Circuit
B = 3” Tube Center
Staggered Tube Design
For High Performance
The more moving air in contact with the tubes in the coil, the
more performance obtained from the total available surface.
The staggered tube design exposes the tubes to more moving air than the in-line design. The geometry of the staggered tube design also allows the rows to be spaced closer
together. This results in a more compact coil providing
higher capacities.
5W H - 10 02 C - 033.00 - 090.00
FINNED LENGTH (INCHES)
FIN HEIGHT (INCHES)
FIN DESIGN
B = 01, 02, 03 & 04 ROW E-F5
C = 01, 02, 03 & 04 ROW HI-F5
ROWS DEEP (01, 02, 03, 04)
FINS PER INCH
(06, 07, 08, 09, 10, 11, 12, 13, 14)
4 McQuay Catalog 412-6
Standard availability chart
COIL TYPE HOT WATER CLEANABLE HOT WATER (REMOVABLE PLUG)
COIL MODEL 5MQ 5MH 5MS 5WB 5WQ 5WH 5WL 5WS 5WM 5WD 5KQ 5KH 5KS 5QQ 5QH 5QS 5PQ 5PH 5PS 5BB 5BS 5BD
SERPENTINE CIRCUIT 1/4 1/2 1 1* 1/4 1/2 3/4 1 1-1/2 2 1/4 1/2 1 1/4 1/2 1 1/4 1/2 1
ROWS 11,221,21
CONNECTION
LOCATION
FIN HEIGHT
3" INCREMENT
1-1/2" INCREMENT
FINNED LENGTH
FIN TYPE
ALUMINUM
FINS
COPPER
SPACING
(FPI)
DIAMETER 5/8 5/8 5/8
FACE C/C 1.5 3.0 1.5 1.5 3.0 1.5
TUBING
COPPER
HEADERS
MAXIMUM STD. P 250 Psig 250 Psig 250 Psig
OPERATING LIMITS T 300° F 300° F 300° F
STANDARD
MAT'L**
***
12- 54
HI-F zzzzzzzzzzzzzzzzzzz z z z
zzzzzzzzzzzzzzzzzzz z z z
E-F
.0075 zzzzzzzzzzzzzzzzzzz z z z
.0095 zzzzzzzzzzzzzzzzzzz z z z
.006 zzzzzzzzzzzzzzzzzzz z z z
zzzzzzzzzzzzzzzzzzz z z z
.0075
zzzzzzzzzzzzzzzzzzz z z z
.0095
.020* zzzzzzzzzzzzzzzzzzz z z z
.025 zzzzzzzzzzzzzzzzzzz z z z
.035 zzzzzzzzzzzzzzzzzzz z z z
zzzzzzzzzzzzzzzzzzz z z z
.049
Same End Except 5WS 3-Row Same End Same End
12-54 12-42 (1 & 2 Row) & 12-54 (3 & 4 Row) 12-42 6-24
6,7,8,9,10,11,12,13,14 6,7,8,9,10,11,12,13,14
1,2,
3,4 2,3,4 4 4 1 1,2 2 1 1,2 2 1 1,2 2 1,2 1,2 2
3,4
12-141 12-141 6-60
Copper Tubing Copper Tubing
HOT WATER
(BOOSTER)
1
Feed*1 Feed1 Feed
6,7,8,9,10,
11,12,13,14
Threaded Copper
Fittings
z Feature Available
* .020” is a nominal tube thickness
** Optional header materials are available; consult your representative.
*** Available in 6” increments.
Flexibility
Along with the standard offerings, optional materials and special configurations are provided to meet many different specifications.
Extra long fin lengths, intermediate tube supports, along with a wide variety of tube wall and fin thicknesses are available. Casings
can be constructed of galvanized steel, aluminum, stainless steel or copper. Optional connection materials such as steel, Monel ,
red brass or copper (sweat) are offered along with butt-weld, victaulic or flange type connections. Coil coatings can be phenolic or
Electro Fin.
These are just a few of the options and specials that can be provided. Consult your local representative for your special coil
requirements.
*Note: Special application coils may be outside the scope of ARI standard 410.
McQuay Catalog 412-6 5
Circuiting arrangements
Hot water coil circuitings
Type 5WB, 5WQ, and 5WH coils are designed to produce
high capacity with limited water quantity. High performance is
achieved by the increased water velocity obtained from the
circuiting of these coil types.
Type 5WL and 5WS coils are designed and engineered to
meet most applications requiring normal water quantities
and normal water pressure drop.
Type 5WM and 5WD coils are designed specifically for
applications that require high water quantities and low
water pressure drop.
1/4 SERPENTINE (1 ROW)
5WQ
1 (SINGLE) SERPENTINE (2 ROW)
1/2 SERPENTINE (2 ROW)
5WS
5WH
Hot water (booster) coil circuiting
Type 5BB, 5BS and 5BD hot water booster coils are designed
for use in reheat applications and to produce very high
capacities in a limited space. They are particularly suitable for
installation in the supply duct to each room for individual
room control.
Type 5BB and 5BS coils are single circuited and are available in one and two rows deep. Type 5BD coils are double
circuited and are available in two rows deep.
1/2 SERPENTINE (1 ROW)
1 (SINGLE) SERPENTINE (2 ROW)
5MS
5WH
5BS
SINGLE FEED
(1, 2 ROW)
DOUBLE FEED (2 ROW)
6 McQuay Catalog 412-6
5BD
5BB
SINGLE FEED
(1, 2 ROW)
Design features
A variety of fin spacings
Standard water heating and booster coils are available with
06, 07, 08, 09, 10, 11, 12, 13 or 14 fins per inch. The wide
variation in fin spacing permits accurate balancing of coil
capacities with the design load.
Copper tube headers
To provide extended coil life, 5W water heating coils are
manufactured from heavy-gauge seamless drawn copper
tube. Intruded tube holes provide maximum brazing surface for maximum strength. Copper tubes brazed to copper
headers offer a combination of similar materials which
eliminates unequal thermal expansion and greatly reduces
stress in the tube-header joint.
Full fin collars
Efficient fin presses perform multi-stage operations to draw
full fin collars with wide, smooth surfaces that completely
cover coil tubes. Our full fin collars actually form a tube
within a tube, yielding greater strength and maximum heat
transfer.
Lack of sharp collar edges makes our coils easier to clean;
smoother fin collars retard lint and dirt accumulations.
Flanged casings
Double flanged galvanized steel casings on all wa ter heating coils provide greater strength and better support for
easier coil stacking. Moving and handling operations are
simplified by the heavy coil casings.
Top and bottom casing flanges are turned back to form two
channel sections in a "box" shape, providing maximum
strength and durability.
Hot water booster coils can be furnished with flanges for
slip-and-drive fasteners or full flanged casings for standard
installations.
McQuay Catalog 412-6 7
General specifications - 5W and 5B coils
(1) Primary surface
Round seamless copper tubes on 1-1/2" or 3"
centers. Cupro-nickel tubes are recommended for
high pressure coils and for applications where
water conditions tend to be corrosive.
(2) Secondary surface
Rippled-corrugated aluminum or copper, dieformed plate type fins.
2A. Fin collars are fully drawn to completely
cover the tubes for maximum heat transfer and to provide accurate control of fin
spacing.
(3) Headers
Extra-heavy, seamless copper tubing. Tube holes
are intruded to provide maximum brazing surface
for added strength. Header end caps are heavygauge, die-formed copper. Cupro-nickel headers
and Monel end caps are available for special
applications. Headers are not used on type 5B
booster coils.
(4) Connections
Unique hand connections are provided for lefthand or right-hand applications. Universal connections are also available for most coils.
Standard water coil connections:
Steel male pipe supply and return connections.
Other materials available on request. (Red
brass connections are recommended for coils
used with non-ferrous piping.)
Booster coil connections:
Wrought copper, 1/2" NPT, supply and return
connections.
(5) Brazing
All joints are brazed with copper brazing alloys.
(6) Casing
Die-formed, heavy-gauge, continuous galvanized
steel with reinforced mounting flanges (other
materials available on request). Intermediate tube
sheets position the core assembly on the larger
standard water coils to prevent damage in handling and shipment.
Vents
Furnished on all standard water coils.
Tests
Complete coil tested leak free under warm water
containing special wetting agent at 315 psig air
pressure.
Operating conditions
Standard coils are suitable for use up to 250 psig
and temperatures up to 300° F for 5W and 5B
coils. High pressure coils are suitable for use up to
400 psig and 400°F
8 McQuay Catalog 412-6
Application recommendations
1. Piping should be in accordance with accepted industry standards.
2. When drainable coils are desired, tubes should be
installed in a horizontal position. Use a spirit level. If
the tubes cannot be installed level, special drain
headers are available on request.
3. Connect the water supply to the leaving air side and
the water return to the entering air side of the coil.
Connecting the supply and/or return in any other
manner will result in a reduced performance.
4. Hot water coils are not normally recommended for
use with entering air temperatures below 40° F;
however, special high pressure water coils have
been used very successfully on high temperature
hot water jobs with low entering air temperatures
when correctly controlled. No control system can be
depended on to be 100% safe against freeze-up
with water coils. Glycol solutions or brines are the
only freeze-safe media for operation of water coils
for low entering air conditions.
5. When fresh and return air are to be heated by a hot
water coil, care should be used in the design of the
ductwork to provide thorough mixing before the air
enters the coil.
The return air should always enter the bottom of the
duct. Fresh air should enter the top of the duct. The
greater the distance between the point of mixing an d
entrance to the coil, the better the application.
Temperature control elements should be located
to sense the lowest temperature air that will enter
the coil.
Always install gasketed fresh air dampers which
are automatically controlled to close whenever the
water leaving the coil is too cool, or the fan stops.
Care should be used in designing fresh air intakes
to prevent stack effect (or wind) from forcing cold
air through the coils when the fan is shut down.
Two sets of dampers are frequently required. Continuous water circulation through the coils at all
times is recommended when fresh air mixtures are
used.
Face and bypass dampers are recommended in
preference to valves for controlling leaving air temperature from hot water coils used to heat fresh air
mixtures.
6. Two-position or modulating valves can be used to
control hot water coils on booster applications.
Follow standard recommendations of the control
manufacturer regarding sizing of valves and location of temperature controllers for these applications.
7. Pipe sizes for the system must be selected on the
basis of the head (pressure) available from the circulating pump. It is recommended that the velocity
should not generally exceed 8 feet per second and
that the pressure drop should be approximately 3
feet of water per 100 feet of pipe.
Hl-F5 vs. E-F5 coils
Two different coil fin surfaces are offered. This results in a more economical coil selection for a given application.
Type. Tube Dia. Fin Type Application
Hl-F5 5/8”
E-F5 5/8”
HI-F
Hi-Efficiency
E-F
Energy
Efficiency
Gives highest heat transfer rate for a given amount of surface.
Smoother fin corrugation than the Hl-F5 results in a lower air pressure drop and
lower fan bhp requirements. The cost of additional surface can be amortized by
the kw savings.
Cleanable coils
5W type water coils are also offered in a cleanable tube co nfiguration. The cleanable coils are identical to 5W coils with
the addition of removable plugs in the header(s) to faci litate
tube cleaning. Type 5PQ, 5PH and 5PS coils have removable
plugs on the coil connection end only.
Type 5QQ, 5QH and 5QS coils have removable plugs on
the opposite connection end only. 5K, 5P and 5Q 1-row
and 2-row cleanable water heating coils may be outside the
scope of ARI standard 410.
McQuay Catalog 412-6 9
Sample coil selection
Given:
SCFM (see page 10 for standard air)...........................6,000
Required BTUH........................................................240,000
7. Assuming a 1-row type 5WB coil will meet the
requirements, the proper fin series must be determined as follows:
Entering air temperature................................................45°F
Entering water temperature.........................................200°F
Gallons per minute................................................16.0 GPM
Coil face ...................................................................24” x72”
Maximum pressure drop........................................5.0 ft. H
2
0
8. Dete rmine heat transfer value, M
a. Air Temp . Rise
Ent. Water Temp. - Ent. Air Temp
b. Water Temp. Drop
Solution:
1. Determine coil face area:
2. Determine coil face velocity:
3. Determine air temperature rise:
4. Determine water temperature drop:
5. Determine approximate number of feeds
required:
GPM/feed 4
See Table 2, page 10, under 24 FH dimension to determine
which coil type is available for the number of feeds desired
(or closest to desired). Type 5WB and 5WQ 1-row coils have
four feeds. Check type 5WB first because this is the most
economical coil.
6.Determine water pressure drop: Follow the example on
page 18. Read the header side and tube side pressure
drop. In this example the header side pressure drop = 1.4
ft. H
These pressure drops must be adjusted by using the temperature correction factors. At 185° F average water temperature this results in the following pressure drops:
tube = 1.2 x 2.2 = 2.64; header = 1.48 x l.2 = 1.77. Therefore, the total pressure drop = 2.64 + 1.77 = 4.42 ft. H
24 x 72 = 12.0 sq. ft.
144
SCFM = 6,000 = 500 FPM
Face Area
BTUH = 24,000 = 36.7°F
12.0
1.09 x SCFM 1.09 x 6,000
BTUH = 240,000 = 30°F
500 x GPM 500 x 16.0
Assume 4 GPM/feed for calculation purposes.
No. of Feeds = GPM = 16.0 = 4
0 and the tube side pressure drop = 2.2 ft. H20.
2
2
O.
Air Temp.Rise
With values from steps a. and b. above, proceed to
Figure 3, page 11, and find M
9. Dete rmine heat transfer value, Rft:
Rows Deep = R
x M
ft
100
Since we have assumed a 1-row coil:
Max. R
M
= 1 = 1 = 1 = .606
ft
x FPM .33 x 500 1.65
t
100 100
Proceed to the Figure 5, page 13, with 4 GPM/feed
and:
Avg .H
O Temp. = Ent. H2O Temp. = Lvg. H2O Temp.
2
2
= 200 + 170 = 185°F
2
and find R
must equal Rft - Rf1 = (.606 - .183) = .423 or less for a
R
f2
= .183 for type 5WB coils.
1
f
1-row type 5WB coil to meet the requirements. Enter Rf
curve for type 5BB and 5WB coils, page 14 at 500 FPM
face velocity and find that R
meets the requirement s .
10. Final coil selection:
The final selection is a 5WB -1201C-24 x 72 coil.
11. Determine air pressure drop: Follow the example on
page 15. With 500 FPM, 12 fin series and a 1-row coil,
the air pressure drop is .19 inches of water.
T able 1. Coil sizes (face area on sq. ft.)
FINNED-
HEIGHT FH
(INCHES)
*6
*9
12
15
18
21
24
27
30
33
36
39
42 12.3 14.0 15.7 17.5 19.2 21.0 22.7 24.5 26.2 28.0 29.7 31.5 33.2 35.0
45
48
51
54
In addition to the standard fin lengths listed above, any required length can be supplied. * Standard on Type 5B coils
12 15 18 21 24 30 36 42 48 54 60 66 72 78 84 90 96 102 108 114 120 126 132 138 141
0.5
0.6
0.8
0.9
1.0
1.3
1.5
1.8
0.8
1.0
0.9
1.1
1.3
1.5
1.6 1.9
2.3
1.3
4.5
1.9
1.8
2.0
2.19
2.5
2.62
3.0
3.06
3.5
40.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0 14.0 15.0 16.0 17.0 18.0 19.0 20.0
2.5
3.1
3.8
4.4
5.6
6.3
2.3
3.00
3.8
4.5
5.3
6.8
7.5
8.3
9.0
2.0
2.6
3.0
3.5
4.0
4.9
5.0
5.3
6.0
6.1
7.0
7.9
9.0
8.8
10.0
9.6
11.0
10.5
12.0
11.4
13.0
15.0 16.9 18.8 20.6 22.5 24.4 26.3 28.1 30.0 31.9 33.8 35.7 37.5 39.4 41.3 43.1 44.1
16.0 18.0 20.0 22.0 24.0 26.0 28.0 30.0 32.0 34.0 36.0 38.0 40.0 42.0 44.0 46.0 47.0
FINNED LENGTH – FL (INCHES)
2.2
2.5
3.4
3.7
4.5
5.6
6.7
7.9
10.1
11.2
12.4
13.5
14.6
19.1 21.3 23.4 25.5 27.6 29.8 31.9 34.0 36.1 38.3 40.4 42.5 44.6 46.8 48.9 49.9
20.3 22.5 24.8 27.0 29.3 31.5 33.8 36.0 38.3 40.5 42.8 45.0 47.3 49.5 51.8 52.9
5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0
5.0
6.2
6.9
7.5
8.1
8.7
9.4
10.0
7.5
8.7
11.2
12.5
13.7
15.0
16.2
8.2
9.6
12.4
13.7
15.1
16.5
17.9
9.0
10.5
13.5
15.0
16.5
18.0
19.5
9.7
11.4
14.6
16.2
17.9
19.5
20.1
10.5
12.2
15.7
17.5
19.2
21.0
22.7
11.2
13.1
16.9
18.7
20.6
22.5
24.4
10.6
12.0
12.7
14.0
14.9
18.0
19.1
20.0
21.2
22.0
23.4
24.0
25.5
26.0
27.6
Booster Coil Sizes
:
t
36.7 = .237
=
200 - 45
30 = .818
=
36.7
= .33
t
x FPM
t
= .42 fin series 12, which
f2
11.2
11.9
14.2
16.6
21.4
23.7
26.1
28.5
30.9
12.5
15.0
17.5
22.5
25.0
27.5
30.0
32.5
13.5
15.7
20.2
22.5
24.7
27.0
29.2
2
10 McQuay Catalog 412-6
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