acoustic - temp air handling units

In addition, The fan wheels are statically and
dynamically balanced and the entire fan and
motor assembly "floats" on spring isolators.
The fan and motor assembly is also flexible
connected at the discharge to prevent vibration
transmission to the unit casing.
LOW INSTALLED COST
Low operating sound contributes to reduced
installation cost to Acousti-Temp units. Their
inherent quiet operation often eliminates the
material and labour cost of additional
attenuation and isolation. And, in addition,
special equipment room wall structure or
sound barrier treatment can often be
eliminated, even when the equipment room is
adjacent to a general office area. Further,
internal vibration isolators virtually eliminate
the need for expensive, flexible pipe and duct
connections.
Another reason for this quiet operation is the
construction of the unit casing. It uses
Goldenstar Acoustic panels, a design that
goes a step beyond mere acoustical lining. It
creates a rigidity that resists internal sonic
vibration, plus providing a durable casing. As a
result, radiated sound through the casing and
sound travelling back through the return side
BUILT TO BE BETTER.
The emphasis on quality can be seen in every
Acousti - Temp component. Each part is
carefully engineered and manufactured to
assure you of the best central station air
handler as possible.
Goldenstar precision balances all fan wheels
to limit vibration and eliminate the abnormal
stress on bearings and other vital unit
components. Further, each Acousti-Temp final
assembly are subjected to carefully conducted
vibration
displacement
test
by
using
computerized instrument assure that your
application will not be impaired by vibration
problems.
3
ENGINEERED AIR HANDLING SYSTEM.
CHOICE OF FANS WHEELS
Acousti-Temp single type fan design reduces
installation time and minimize operating
problems. Choose either forward curved
wheels or airfoil, to your specific application
demands.
PILLOW
BLOCK
BEARINGS
200,000 hour bearing life !
Standard on all Acousti-Temp units, rugged
pillow block bearings are selected because
they deliver an average of 200,000 hour
operating life.
VARIABLE INLET VANE DAMPERS
Acousti-Temp air foil wheel fans are available
with optional nested inlet vane dampers for
variable air volume application. This improved
throttling capability
results significant
horsepower/ savings when the air handling
unit is used in conjunction with Goldenstar
variable air volume terminal units. A discharge
damper is available with forward curved fan for
VAV application. As an alternate VFC (variable
frequency control) is available for both FC
and AF fans.
4
VARIABLE PITCH DRIVE
Variable pitch pulley (optional) is available on
all Acousti-Temp air handlers. The effective
pulley diameter can be increased by up to 10%
to achieve field alteration of air volume. Fixed
pitch pulley supplied as standard on all
Acousti-Temp unless otherwise noted.
WATER COILS
Water cooling and heating coils are furnished
with 5/8" or 1/2" (optional) diameter copper
tubes aluminum or copper fins and four fin
spacings. Water cooling coils are available in
4, 5, 6, 8, 10 row depths and water heating
coils in 1, 2, 3 and 4 row depths. Various coil
circuits are available to obtain high internal
heat transfer coefficient without resorting to
restrictive internal devices which increase
pressure
drop
and
restrict
draining.
Computerized selection and ARI Certified coils
make Acousti-Temp the most efficient air
handler in industry. Coils are available with
corrosion protective coated or electro tinned for
high corrosive atmosphere application.
DIRECT EXPANSION COILS
Direct expansion coils are furnished with 1/2"
or 3/8" (optional diameter copper tubes,
aluminum or copper fins, four fin spacings up
to 10 rows depths. They are furnished with
brass, sweet type distributors and copper
suction connections. Coils can be furnished
with multiple distributors for either face or row
control. Coils are available with corrosion
protective coated or electro tinned for high
corrosive atmosphere application.
5
STEAM COILS
Steam coils are furnished with 5/8" diameter
copper or 90/10 cupro-nickel tubes, aluminum
or copper fins with various fin spacings. Coils
are supplied either one or two rows deep with
4
fins
series.
Contact
Goldenstar
representatives for computer selection.
ELECTRIC HEATING COILS
Electric heaters are UL listed for duct
installation. Two types of electric heat coils are
there for your Acousti-Temp application. The
standard coils are of open-coil construction.
Finned tubular coils, particularly suited for use
in hazardous areas. Both coils are designed to
meet UL standard for wattage density,
electrical clearances are over temperature
protection. Coil assemblies slide into the full
length tracks provided in steam or hot water
coil section. Optional integral or remote mount
control panel with number of control steps are
available.
ACCESSORIES FLAT FILTER
SECTION
Space saving economical flat filter sections are
available for both 2" and 4" filters. Washable or
throw away, low resistance having minimum
30% efficiency filter cartridge arranged for side
with-drawal is an added advantage of Acousti
-Temp.
6
LOW VELOCITY FILTER SECTION
Designed for high volume CFM applications.
Filters are arranged in a "V" pattern to give the
greatest surface possible. The increased filter
area found in high capacity filter section will
extend the life of the filter and reduce
resistance to air flow. Filter section with 2"
thick washable or throw away type filter
cartridge of 30% efficiency is standard. An
hinged access door provided for ease of filter
change.
BAG FILTER SECTION
Bag filter sections are available with 22", 30",
37" deep and efficiency of 45%. 60%, 85%
and 95%. Bag filter sections are available with
or without pre filters and side access door for
filter removal.
AUTO ROLL FILTER SECTION
Auto roll filters to match the cross section of
Acousti -Temp. Filter media with 80-85%
efficiency (NBS) and available with various
optional drive system & accessories.
7
MIXING BOX SECTIONS
Two types of mixing box sections are
available, the mixing box only or the
combination mixing box and the angle filter
section. Both types have parallel blades with
inter-connecting linkage. Damper rods rotate in
friction-less sleeve bearings and the drive rod
extend from both ends for either left or right
hand drive.
FACE AND BYPASS DAMPERS
Two types of damper sections are available for
either internal or external by pass. Both types
have
balanced
opposed
blades
with
interconnecting linkage. The external face and
by pass damper is used when a large face
area coil is required.
BASIC UNIT ARRANGEMENTS
QUICK SELECTION TABLE
MODEL/NOMINAL CFM
4000
6000
8000
12000
18000
26000
30000
36000
AIR VOLUME CFM
Coil face Velocity (
FPM )
400
3040
4280
6120
8760
13400
20400
26760
26760
450
3420
4815
6885
9855
15075
22950
30105
30105
500
3800
5350
7650
10950
16750
25500
33450
33450
550
4180
5885
8415
12405
18425
28050
36795
36795
600
4560
6420
9180
13140
20100
30600
40140
40140
8
SELECTION PROCEDURE
DETERMINE REQUIRED CFM, STATIC PRESSURE
AND COOLING/HEATING LOADS.
DETERMINE RECOMMENDED UNIT SIZE
The Acousti-Temp should be selected using the CFMs
and TSPs previously determined.
Determine the maximum CFM required from the unit,
making sure necessary adjustments have been made for
factors such as duct heat gain (or loss) and duct leakage.
When selecting the unit, consideration must be given to
the unit casing size as well as the fan selection. The size
of the unit casing determines the coils and filter face area
and there fore fixes the air velocity through them. If too
small a selection is made high air velocities through the
unit may result in a high SP loss and the possibility of
moisture carryover from the cooling unit. Making to large a
selection may make the unit unnecessary expensive.
Estimate the system total static pressure (TSP) including
appropriate static pressure losses for
1.
The duct system, terminal boxes and diffusers.
2.
Acousti-Temp heating and cooling coils and
accessories.
3.
Return or outdoor air system.
4.
Any unusual inlet or discharge conditions that will
add static pressure.
Generally, units should be selected for coil face velocities
between 400 and 500 fpm. Coils face areas and
approximate capacities and pressure drops are provided
on page 25.
Contact your local GOLDENSTAR representative for
computer coil selections.
Once the Acousti-Temp size and coils have been
selected, the SP loss through the air handler may differ
from the initial estimated valve. If this difference is
significant, the system TSP should be changed to reflect
the new Acousti-Temp SP and the fan performance should
be refigured at the new TSP.
Since fan performance ratings are provided at standard air
density (.075 Ib. per cu. foot) corrections must be applied
when selecting fans at altitudes and temperatures other
than standard.
To determine the standard conditions for selections CFMs
and TSPs apply the air density factor F from table 1 to the
actual conditions CFMa and TSPa as follows :
CFMs =
TSPa x F
DETERMINE BASIC UNIT PERFORMANCE From the fan
performance blades determine the rpm, bhp and LW
(sound power per cfm) at standard conditions. Use the
following to correct to actual conditions:
CFMa TSPs =
Determine the selection temperatures and require
capacities for the coil (s). Make sure the appropriate
equipment loads, such as fan motor heat have been
considered in determining the selection conditions.
RPMa =
RPMs LWa =
LWs BHPa =
BHPs/F
For variable volume systems, Figure 1 may be used to
estimate the fan motor KW draw at reduced loads on
Acousti-Temp FC Models.
TABLE 1 -AIR DENSITY CORRECTION FACTORS (F)
FOR NON-STANDARD ALTITUDES AND
TEMPERATURES.
FIGURE 1 - Part Load Performance (Fc Models)
ALT.
(FT.)
BAROM.
PRESS. (IN
OF HG)
TEMPERATURE (°)
40
50
60
70
80
90
100
110
120
130
140
0
29.92
0.94
0.96
0.98
1.00
1.02
1.04
1.05
1.08
1.10
1.11
1.14
400
29.47
0.96
0.98
1.00
1.02
1.04
1.05
1.08
1.10
1.11
1.14
1.15
800
29.02
0.98
1.00
1.02
1.03
1.05
1.08
1.10
1.11
1.14
1.15
1.18
1200
28.58
0.99
1.01
1.03
1.05
1.06
1.09
1.11
1.12
1.15
1.16
1.19
1600
28.15
1.01
1.03
1.04
1.06
1.09
1.11
1.12
1.15
1.16
1.19
1.21
2000
27.72
1.02
1.04
1.06
1.09
1.10
1.12
1.15
1.16
1.19
1.21
1.24
2400
27.30
1.04
1.06
1.08
1.10
1.12
1.14
1.16
1.18
1.21
1.22
1.25
2800
26.89
1.05
1.08
1.10
1.12
1.14
1.16
1.18
1.21
1.22
1.25
1.27
3200
26.48
1.06
1.09
1.11
1.14
1.15
1.18
1.21
1.22
1.23
1.27
1.28
3600
26.08
1.09
1.11
1.12
1.15
1.18
1.19
1.22
1.23
1.25
1.28
1.30
4000
25.68
1.10
1.12
1.15
1.16
1.19
1.21
1.23
1.25
1.28
1.30
1.32
4400
25.30
1.12
1.14
1.16
1.19
1.21
1.23
1.25
1.28
1.30
1.32
1.33
4800
24.91
1.14
1.16
1.18
1.21
1.23
1.25
1.27
1.30
1.32
1.33
1.37
5200
24.53
1.15
1.18
1.21
1.22
1.25
1.27
1.30
1.32
1.33
1.37
1.39
5600
24.16
1.18
1.19
1.22
1.24
1.27
1.28
1.32
1.33
1.35
1.39
1.41
6000
23.79
1.19
1.22
1.24
1.27
1.28
1.32
1.33
1.35
1.37
1.41
1.43
9
DETERMINE UNIT SOUND POWER LEVEL
The Lw provided by the fan performance tables
indicates the third octave band sound power per
cfm for the selection. These third band values may
be used to compare sound levels for different unit
sizes or selection parameters.
To determine the complete sound characteristics
of the unit selected, sound levels must be evaluated
for all octave bands on the discharge, on the return
and through the walls (radiated sound) of the
Acousti-Temp. These values may be determined for
all octave bands by first determining the "base"
sound power level, then making the correction to
the base for the octave band and location desired.
The " base" sound power LW (third octave band discharge
sound power) is determined by using the Lw from the
Acousti-Temp selection and adding 10 log 10 (CFM) from
figure 2, or
LW = Lw + 10 log10 (CFM) This "base" value is
then corrected by adding the values in figure 3 to get the
discharge point 1, return 2, or radiated 3 sound power
levels in all octave bands.
FIGURE 3- SOUND POWER CORRECTION FACTORS
1.
Inlet corrections include acoustical effects of the
unit housing, a minimum (4 row) coil and a filter
bank (2"). AF includes inlet vanes (point 2).
If inlet vanes are used the rpm and bhp are increased as
shown on table 2. The horsepower required at part load
modulated cfm can be estimated using figure 4. For
applications requiring relatively low bhp, check the
minimum motor horsepower for starting. Do not exceed
maximum rpm ratings shown.
10
FIGURE 4-VARiATION OF AF FAN HORSEPOWER WITH CFM ON A
CONSTANT SYSTEM.
TABLE 2 - INLET VANE PERFORMANCE
CORRECTION FACTORS FOR AF MODELS
Correction
factors
Percent Fan Wide Open CFM
45%
Fan Size
Wide
Open
CFM
Factor
65%
85%
100%
%
rpm
inc
%
bhp
inc
%
rpm
inc
%
bhp
Inc
%
rpm
inc
%
bhp
inc
%
rpm
inc
%
bhp
inc
AT 1200 AF
10.3
2.2
6.0
3.6
10.5
8.8
19.5
8.8
30.0
AT 18000 AF
13.7
2.0
5.5
3.3
9.7
8.3
18.2
8.3
28.0
AT 26000 AF
19.2
1.8
5.0
3.1
9.0
7.8
17.0
7.8
26.0
AT 30000 AF
26.3
1.6
4.6
2.8
8.2
7.3
15.7
7.3
24.0
AT 36000 AF
34.9
1.5
4.0
2.5
7.5
6.8
14.5
6.8
22.0
For example, an AT 30000 AF producing 30000 CFM at 1600 rpm would have a
wide open CFM of 1600 x 26.3 = 42000. The percent wide open CFM is
30000/42000=85% . The rpm correction therefore is 7.3% and bhp correction is
15.7%.
SAMPLE SECTION.
Select an Acousti-Temp unit to provide 12200 CFM at 2.9" w.g. system total
static pressure. Complete selection parameters for the variable volume system
include:
% DESIGN CFM (TYPICAL)
CFM
TSp
:
:
12200
2.9" w.g.
Altitude :
Cooling Coils
RPMs
5200 ft.
Lws
30 Total Tons (360 MBH)
23 Sensible Tons (276 MBH)
80 Deg. D8/67 Deg.WB Entering
Conditions
45 Deg. Chilled Water Supply
=
=
990 BHPs
=
12.5
42dB
Applying the air density correction factor F, the actual Acousti-Temp
performance at job design conditions is:
Determine the Acousti-Temp FC rpm and bhp. Also determine the discharge
RPMa =
RPMs =
990.0
BHPa =
BHPs/F =
12.5/1.2=10.4
Lwa =
Lws =
42dB
return and radiated sound power levels for all eight octave bands.
If information on the motor is available, the motor KW (corresponding to 10.4
From table 1 the air density correction factor F for 5200 ft. and 55 deg. is 1.2.
bhp) can be determined. Figure 1 may then be used with the motor KW to
With this, the standard system total static pressure TSPs becomes:
determine part load performance for the variable volume unit.
Since the total static pressure is less than 4.0 in. w.g., the FC series is selected.
Since the Model 12000 Acousti-Temp FC has 21.9 sq. ft. of coil area, the
TSPs
=
cooling coil should be selected for the following capacities:
Total MBH/Sq. ft. =
360/21.9 =
16.4 Sensible MBH/Sq.ft. =
2.9" x 1.2 3.5"
UNIT SIZE AND PERFORMANCE
276/21.9 =
12.6
The model 12000 Acousti-Temp FC has a coil face area of 21.9 sq. ft.
Therefore, the coil face velocity for the selection is 557 ft. per min. an acceptable
From table 21, page 26, a 4 row/10 fpi will meet the required loads. The Coil
pressure drop from table 20, is 0.66" w.g.
value to prevent moisture carryover.
From the fan performance table for the Model 12000 Acousti-
11
UNIT SOUND POWER LEVEL
The "base" or third octave band discharge sound power is
determined as follows :
Lw (250 Hz sound power/cfm) ..................42
10 log10 (12200)(figure 2) .................+41
Base (250 Hz discharge sound power level .....83
TABLE 3 - DISCHARGE SOUND POWER (POINT 1 IN FIGURE-3)
Octave Band
1
2
Midfrequency
63
Base
3
4
5
TABLE 5 - RADIATED SOUND POWER (POINT 3 IN FIGURE-3)
6
7
8
125 250 500 1000
2000
4000
8000
Octave Band
1
2
83
83
83
83
83
83
83
83
Midfrequency
63
Discharge
Correction
+12
+8
+9
+3
-1
-3
-6
-10
Base
83
125 25
0
83 83
+1
95
91
92
86
82
80
77
73
Discharge
Correction
+4
Discharge Sound
Power
Discharge Sound
Power
87
84
3
4
5
6
7
8
500 1000
2000
4000
8000
83
83
83
83
83
-4
-9
-20
-21
-29
-36
79
74
63
62
54
47
TABLE - 4 RETURN SOUND POWER
Octave Band
1
2
3
4
5
6
7
8
Midfrequency Hz
63
125
250
500
1000
2000
4000
8000
Base
83
83
83
83
83
83
83
83
Inlet Correction
+8
+4
+8
+4
+3
-2
-12
-23
Return Sound Power
91
87
91
87
86
81
71
60
NOTE
The following 12 pages contain Acousti-Temp fan ratings. Tables 6 to 12, page 13 to 19, cover Acousti-Temp FC ratings and tables 13 to 17, pages 20 to 24, cover the
Acousti-Temp AF. Be sure you are selecting from the correct table because some CFM sizes are available in both FC & AF Models.
12
OUTLET AREA
1.44 SQ. FT.
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
13
OUTLET AREA 2.01 SQ. FT.
Ratings based on AMCA Arr. 3 and include Belt & Drive Losses. LW is tan discharge sound power level per cfm in 3rd octave band, 250 Hz, Re 1012
Watts.
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
14
OUTLET AREA 2.87 SQ. FT.
Ratings based on AMCA Arr. 3 and include Belt & Drive Losses. LW is fan discharge sound power level per cfm in 3rd octave band, 250 Hz, Re 10-12 Watts
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
15
OUTLET AREA 4.20 SQ. FT.
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability
16
TABLE 10 - Model 18,000 FC Acousti-Temp Fan Ratings
FAN DIAMETER
25 in. TIP SPEED
6.54 x RPM
Ratings based on AMCA Arr. 3 and include Belt & Drive Losses. LW is
10- 12 Watts.
fan discharge sound power level per cfm in 3rd octave band, 250 Hz, Re
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
17
OUTLET AREA 8.66 SQ.
Ratings based on AMCA Arr. 3 and include Balt & Drive Losses. LW is fan discharge sound power level per cfm in 3rd octave band, 250 Hz, Re 10- 2
Watts.
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
18
TABLE 12 - Model 36,000 FC Acousti-Temp Fan Ratings
FAN DIAMETER
36 in. TIP SPEED
9.42 x RPM
Ratings based on AMCA Arr. 3 and include Belt & Drive Losses. LW is fan
octave band, 250 Hz, Re 10-12 Watts.
FC
discharge sound power level per cfm in 3rd
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
19
TABLE 13 — Model 12,000 AF Acousti-Temp Fan Ratings
OUTLET AREA 4.14 SQ.FT
FAN DIAMETER
20 in. TIP
SPEED
5.23 x RPM
Ratings based on AMCA Arr. 3 and include Belt & Drive Losses. LW is fan discharge sound power level per cfm in 3rd octave band, 250 Hz, Re 10- 12
Watts.
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
20
TABLE 14 - Model 18,000 AF Acousti-Temp Fan Ratings
FAN DIAMETER
24.5 in. TIP SPEED
6.41 x RPM
Ratings based on AMCA Acr. 3 and include Belt & Drive Losses.
250 Hz, Re 10-12 Watts,
LW is fan discharge sound power level per cfm in 3rd octave band,
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
21
TABLE 15 - Model 26,000 AF Acousti-Temp Fan Ratings
FAN DIAMETER
SPEED
OUTLET AREA 7.54 SQ.FT
27 in. TIP
7.07 x RPM
Ratings based on AMCA Arr. 3 and include Belt & Drive Losses. LW is fan discharge sound power level per cfm in 3rd octave band, 250 Hz, Re 1012
Watts.
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability22
TABLE 16 - Model 30,000 AF Acousti-Temp Fan Ratings
DIAMETER
30 in. TIP SPEED
7.85 x RPM
Ratings based on AMCA Arr. 3 and include Belt & Drive
octave band, 250 Hz. Re 10-12 Watts,
Losses. LW is fan discharge sound power level per cfm in 3rd
Performance Based on .075 Pounds Per Cubic Foot Density. Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
23
TABLE 17 Model 36,000 AF Acousti-Temp Fan Ratings
OUTLET AREA 11.27SQ.FT. MIN.
PAN DIAMETER 33 in. TIP SPEED
8.64 x RPM
MOTOR SIZE
3
(FOR X-L1NE STARTING. BASED ON PROPER
START TIMES AT 1" S.P. AND 1000 FPM OUTLET
VELOCITY FOR CONSTANT VOLUME FANS.)
Ratings based on AMCA Arr. 3 and include Belt & Drive Losses. LW is fan discharge sound power level per cfm in 3rd octave band, 250
Hz, Re 10-12 Watts.
Performance Based on .075 Pounds Per Cubic Foot Density, Shaded Area Requires Heavy Duty Construction. Contact Goldenstar for Availability.
24
COIL DATA
(When selecting cooling coil face velocities, caution should be shown to ensure that moisture carryover
will not occur.)
TABLE: 18—Coil
face Velocities
MODEL
FAN T Y P E
(Nominal CFM)
MAX.COIL
AREA (Sq.Ft)
CFM
400 f p
450 f p
500 f p
550 f p
600 f p
4,000
re
7.6
3,040
3,420
3,800
4,180
4,560
6,000
FC
10.7
4,280
4,815
5.350
5,885
6,420
8,000
re
15.3
6,120
6,885
7,650
8,415
9,180
12,000
FC,AF
21.9
8,760
9,855
10,950
12,045
13,140
18,000
33.5
13,400
15,075
16.750
18,425
20,100
26,000
FC, AF
FC,AF
51.0
20,400
22,950
25,500
28,050
30,600
30,000
AF
66.9
26,760
30,105
33,450
36,795
40,140
36,000
FC, AF
66,9
26,760
30,105
33,450
36,795
40,140
Note: See Ac:ousti-Te«p selection procedure, Page - 9.
TABLE
19— Filter Data
MODEL
PANEL
EFF.
X
BAG *
PRESS.DROP
SIZE (QUANTITY)
INITIAL
FINAL
EFF
X
PRESS.DROP
INITIAL
FINAL
SIZE (QUANTITY)
4,000
30
0.16"
0.52"
(3) 20 X 25 X 2
80-85
0.42"
1.0"
(3) 24 X 20 X 21
6,000
30
0.16"
0.52"
(6) 15 X 20 X 2 (2) 15 X 16 X 2
80-85
0.42"
1.0"
(2) 24 X 20 X 21 (1) 24 X 24 X
21 (1) 12 X 24 X 21
8,000
30
0.16"
0.52"
(2) 16 X 25 X 2 (6) 16 X 20 X 2
80-85
0.42"
1.0"
(4) 20 X 24 X 21 (4) 12 X 24 X
21
12,000
30
0.16"
0.52"
(6) 20 X 25 X 2 (2) 20 X 20 X 2
80-85
0.42"
1.0"
(8) 24 X 20 X 21
18,000
30
0.16"
0.52"
(10) 25 X 20 X 2 (2) 25 X 16 X 2
80-85
0.42"
1.0"
(8) 24 X 24 X 21 (2) 20 X 24 X
21
26,000
30
0.16"
0.52"
(12) 20 X 25 X 2 (6) 16 X 25 X 2
80-85
0.42"
1.0"
(18) 24 X 20 X 21
30,000 36,000 30
0.16"
0.52"
(18) 20 X 25 X 2 (6) 12 X 25 X 2
80-85
0.42"
1.0"
(18) 24 X 24 X 21
* 80-85% Eff. Standard other efficiencies available. Pre-Filter supplied same size as Bag filter.
TABLE 20—Coil Pressure Drop(In.W.G)
-
CHILLED WATER/ DX
HOT WATER
∆
∆ P 8 400 FPM
∆
∆ P @ 500 FPM
∆
∆ P @ 600 FPM
ROWS
FPI
DRY WET
DRY WET
DRY WET
ROWS
FPI
500 FPM
750 FPM
1000 FPM
4
•8
.315 .400
.460 .550
.620 .720
1
8
.135
.295
.490
10
.365 .475
. 540 .660
.720 .880
10
.168
350
.600
12
.420 .550
.620 .780
.820 1.025
12
.205
.430
.740
14
.475 .620
.700 .900
.925 1.200
14
.250
.530
.900
8
.390 .485
.560 .670
.760 .860
8
.230
.420
.700
10
.450 .580
.640 .800
.880 1.050
10
.275
.530
.840
12
.520 .680
.740 .960
1.000 1.250
12
.317
.640
1.000
14
.590 .780
.840 1.100
1.150 1.450
14
.400
.760
1.200
8
10
.460 .580
.540 .700
.680 .800
.780 .960
.900 1.025
1.050 1.250
STEAM
AP @
12
.620 .820
.900 1.140
1.200 1.500
ROWS
FPI
500 FPM
750 FPM
1000 FPM
14
.700 .950
1.025 1.300
1.350 1.750
1
8
.135
.286
.495
8
.620 .760
.880 1.025
1.175 1.300
10
.165
.350
.600
10
.720 .920
1.015 1.250
1.350 1.600
12
.205 .250
.435
.740
12
.820 1.160
1.170 1.500
1.550 1.925
14
.540
.900
14
.930 1.250
1.325 1.780
1.750 2.250
5
6
8
∆
∆ P@
2
25
TABLE 21 - Chilled Water Coil(Total MBH/Sensible MBH Per. Sq.Ft.)*
TABLE 22 - Direct Expansion Coil(Total MBH/Sensible MBH Per. Sq.Ft.)
26
TABLE 23 - Hot Water Coil Capacities(MBH Per. Sq.Ft.)*
*@4FPS Water Velocity and 20°F ∆ T TABLE 24 - Steam Coil
Capacities(MBH Per. Sq.Ft.)
27
VERTICAL DRAWTHRU UNITS FAN &
COIL SECTIONS
NOTE: COIL & ACCESS DOOR AT RH SIDE WHILE LOOKING FROM FAN SECTION UNLESS OTHERWISE SPECIFIED.
28
29
ACCESSORIES
NOTE: 1. ACCESSORIES AIR WAY WIDTH SHOWN. HEIGHT & DEPTH WILL BE 4" LESS THAN FAN SECTION.
• AN ADAPTER SECTION REQUIRED TO JOINT FAN/COIL SECTION WITH OTHER ACCESSORIES SECTION.
30
SUGGESTED SPECIFICATION
Motors shall be mounted on a steel slide base to provide for belt
adjustment.
The contactor will provide a Goldenstar horizontal draw thru type
Acousti-Temp air handling unit in an indoor enclosure with
components including supply fan section, cooling coils, heating coils,
filters, discharge dampers, mixing section as indicated in the Air
Handling Unit performance specifications and Construction
Specifications.
All bushings, sheaves and belts necessary for fan to achieve
design performance shall be factory selected and installed.
Bushings shall be keyed to shafts and sheaves taper locked to
bushings.
Fan bearings shall be self-aligning, pillow block relubricable ball
types selected for an average life of 200,000 hours.
HOUSING CONSTRUCTION
Air handling unit exterior skin shall be 20 gauge galvanized steel
acoustical panel with 1" deep flanged ribs spaced 18" apart.
VARIABLE AIR VOLUME
Walls, roof and floor shall be 18" wide acoustical panels which resist
internal sonic vibration. Panels shall be insulated with 1" thick 11/2
Ib. density, fiber glass, moisture, odor and vermin proof faced with
black fiberglass mat and shall have a 0.22 BTU/Hr/Sq.Ft. "U" factor
and a fire rating of UL 25/50/50.
Variable air volume control shall be provided by one of the following
methods:
1.
A discharge damper assembly consisting of an opposed
air foil multiblade arrangement and constructed to limit
air leakage to 2% of rated air quantity at 1 inch
differential static pressure Or,
Housing shall be mounted on steel channel support frame which will
allow for floor or ceiling mounting of unit.
Access doors shall be airtight, gasketed, hinged and latched. Hings
shall be heavy duty , chrome plated steel to prevent rust and
corrosion. Latches shall be single handle, high compression type.
The unit casing shall be vibration isolated from the supply fan and
drive system (flex connected).
SUPPLY
Acousti-Temp FC
2.
Acousti-Temp AF
Nested inlet vane assembly rigidly constructed with
friction free bearings that provide pre-spin of incoming air
in the direction of wheel rotation. Or,
FAN ASSEMBLY
3.
The air handling unit supply fan shall be a double wide double inlet
type with forward curved blades or backward inclined air foil blades.
Fans shall be a single type velocity regain design to minimize flow
oscillation and noise. The fan wheel shall be constructed of painted
steel. Fan wheels and drive sheaves shall be key seated to fan shaft.
Fan shaft shall be solid C1045 steel, turned, ground and polished to
proper diameter and tolerance. Wheels shall be statically and
dynamically balanced as an assembly at the factory at the design
rpm prior to shipment.
Acousti-Temp FC or Acousti-Temp AF Variable
Frequency Speed Control,(VFC)
HEATING AND COOLING COILS
General
Coils shall have capacities shown on Air Handling Unit performance
schedule, and shall be extended surface type, constructed of
seamless copper "tubing with aluminum plate fins pressure bonded
to tube. Plate fins shall be die formed and shall be spaced at (8, 10,
12 or 14) per inch with integral spacing collars that cover the tube
surface.
The fan assembly, complete with motor and drive, shall be mounted
on a heavy steel vibration type base. Open spring type vibration
isolators (1" deflections) shall be provided which support the fan
assembly and isolate all rotating parts. All isolators shall be capable
of 30% overtravel before becoming solid and shall be designed
stable, for a minimum KX/KY (horizontal to vertical spring range) of
1.0.
All copper to copper joints shall be with high temperature silver
brazing material.
All fan motors shall be built in accordance with the latest NEMA and
IEEE standards and shall be rated for continuous duty at full load at
40 degree C ambient temperature rise with a service factor of 1.15.
Motors shall be 1800 RPM, NEMA design B, T-frame, open drip
proof, squirrel cage induction type with ball bearings.
Cooling coils shall be provided with 18 gauge galvanized steel drain
pans. Drain pans shall have female pipe connections (for water
drainage) located out of the bottom of the pan on both sides of the
unit,
Refrigerant
DX coils shall have (4, 5, 6 or 8) rows, (8, 10, 12 or 14) fins per inch
with seamless copper tube headers. Sweat connection shall be
provided. Dx coils shall open drip air pressure while under water.
31