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DURASTAR.COM
FORM NO. CDS-224
1
SPECIFICATION SHEET
DRAEF Series
CASED COILS FOR GAS FURNACES
PRODUCT FEATURES
• Durastar Indoor Furnace cased coils are designed for use with Durastar
outdoor units and are available for vertical upflow or downflow, and horizontal
left or horizontal right airflow. When matched with Durastar outdoor units, the
coils provide a nominal capacity range from 18,000 BTU/HR [5.24 kW] to
60,000 BTU/HR [17.6 kW].
• Constructed of aluminum fins bonded to internally grooved aluminum tubing.
• Coils are tested at the factory with an extensive refrigerant leak check.
• Coils have copper sweat refrigerant connections.
• Feature two sets of 3/4" [14.1 mm] N.P.T. Condensate drain connections
for ease of connection.
• Chatleff metering device connections, at inlet and outlet of TXV and equalizer
connections.
• Condensate drain pan is constructed of high grade, heat resistant,
corrosion free thermal-set material.
• Compatible with Germicidal Light System (UV resistant)
• Bi-Directional airflow eliminates the need to switch any internal components
from horizontal left to right.
• Unique drain pan design maximizes application flexibility and
condensate removal.
• N-Coil design maximizes performance and minimizes height
required at installation.
• Coils are AHRI certified for system application.
AIRFLOW CAPACITY:
600-1,900 CFM [283-897 L/s]
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DRAEF Series
TABLE OF CONTENTS
Model Number Identification ............................................................................3
Coil Specifications ......................................................................................4-5
Coil Dimensions and Weights........................................................................6-7
Accessories ................................................................................................8-9
Limited Warranty ..........................................................................................10
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Model I.D.
DRAEF Series
DR A E F 24 17 S T A M CC A
Minor Series**
A - 1st Design
Casing
CC = Cased Coil
Orientation
M = Multiposition
U = Upflow/Vertical
H = Horizontal
Major Series
A - 1st Design
Metering Device
T = TVX
Efficiency
S = Standard Efficiency
M = Mid Efficiency
H = High Efficiency
Width
14 = 14"
17 = 17.5"
21 = 21"
24 = 24.5"
Capacity
24 – 2 Ton
36 – 3 Ton
48 – 4 Ton
60 – 5 Ton
Type
F = Furnace Coil
H = Air Handler Coil
Product Category
E = Evaporator Coi
A = 410A
Brand
Durastar
[ ] Designates Metric Conversions
Model Number Identification
MODELS AVAILABLE
DRAEF2414STAMCCA
DRAEF2417STAMCCA
DRAEF3617STAMCCA
DRAEF3621MTAMCCA
DRAEF3621STAMCCA
DRAEF4821MTAMCCA
DRAEF4821STAMCCA
DRAEF6021STAMCCA
DRAEF6024STAMCCA
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Coil Specifications
DRAEF Series
Table 1: Coil Specifications/Airflow Pressure Drop
Coil
Model
DRAEF
Approx.
Design Cooling
Air Flow
Range CFM
[L/s]
Face
Area
Sq. Ft.
[m
2
]
Fins
Per
Inch /
Rows
Deep
Width
Nominal
Capacity
Wet Coil Static Pressure Drop (Inches W.C.) [kPa] @ CFM [L/s] – (Coil Only)
600
[283]
700
[330]
800
[378]
900
[425]
1000
[472]
1100
[519]
1200
[566]
1300
[614]
1400
[661]
1500
[708]
1600
[755]
1700
[802]
1800
[850]
1900
[897]
2414STAM
600/900
[283/425]
4.56
[0.42]
16/2 14
1.5 – 2
0.1650.2090.2620.325——————————
2417STAM
600/900
[283/425]
4.56
[0.42]
16/2
17
0.1200.1570.1990.246——————————
3617STAM
700/1300
[330/614]
5.70
[0.52]
16/2
2.5 – 3
0.1130.1450.1810.2220.2660.3150.368———————
3621STAM
700/1300
[330/614]
5.70
[0.52]
16/2
21
0.1130.1450.1810.2220.2660.3150.368———————
3621MTAM
700/1300
[330/614]
8.55
[0.79]
16/2 0.0620.0860.1120.1400.1700.2020.236———————
4821MTAM
1100/1800
[519/850]
7.60
[0.70]
13/3
3.5 – 4
0.106 0.125 0.146 0.169 0.194 0.221 0.251 0.282 0.315 0.350 0.386 0.425 0.466 —
4821STAM
1100/1800
[519/850]
8.55
[0.79]
16/2 0.062 0.086 0.112 0.140 0.170 0.202 0.236 0.272 0.309 0.349 0.391 0.434 0.480 0.527
6021STAM
1400/1600
[661/755]
7.60
[0.70]
13/3 2 – 5 0.036 0.050 0.065 0.081 0.098 0.117 0.137 0.158 0.180 0.203 0.228 0.254 — —
6024STAM
1400/1800
[661/755]
9.98
[0.93]
14/3 24 5 0.036 0.050 0.065 0.081 0.098 0.117 0.137 0.158 0.180 0.203 0.228 0.254 0.281 —
[ ] Designates Metric Conversions
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Coil Specifications
DRAEF Series
Table 1: Coil Specifications/Airflow Pressure Drop (con’t.)
Coil
Model
DRAEF
Approx.
Design Heating
Air Flow
Range CFM
[L/s]
Face
Area
Sq. Ft.
[m
2
]
Fins
Per
Inch /
Rows
Deep
Width
Nominal
Capacity
Dry Coil Static Pressure Drop (Inches W.C.) [kPa] @ CFM [L/s] – (Coil-Only)
600
[283]
700
[330]
800
[378]
900
[425]
1000
[472]
1100
[519]
1200
[566]
1300
[614]
1400
[661]
1500
[708]
1600
[755]
1700
[802]
1800
[850]
1900
[897]
2414STAM
600/1600
[283/755]
4.56
[0.42]
16/2 14
1.5 – 2
0.118 0.118 0.145 0.176 0.210 0.247 0.288 0.332 0.379 0.429 0.483 — — —
2417STAM
600/1500
[283/707]
4.56
[0.42]
16/2
17
0.1160.1160.1510.1900.2350.2840.3380.3970.4610.530————
3617STAM
600/1600
[283/755]
5.70
[0.52]
16/2
2.5 – 3
0.101 0.101 0.129 0.161 0.196 0.235 0.277 0.323 0.373 0.425 0.482 — — —
3621STAM
600/1600
[283/755]
5.70
[0.52]
16/2
21
0.101 0.101 0.129 0.161 0.196 0.235 0.277 0.323 0.373 0.425 0.482 — — —
3621MTAM
600/1900
[283/896]
8.55
[0.79]
16/2 0.039 0.039 0.056 0.075 0.095 0.117 0.141 0.166 0.193 0.222 0.252 0.284 0.318 0.353
4821MTAM
600/1900
[283/896]
7.60
[0.70]
13/3
3.5 – 4
0.043 0.043 0.053 0.066 0.080 0.096 0.115 0.135 0.158 0.182 0.208 0.237 0.267 0.299
4821STAM
600/1900
[283/896]
8.55
[0.79]
16/2 0.039 0.039 0.056 0.075 0.095 0.117 0.141 0.166 0.193 0.222 0.252 0.284 0.318 0.353
6021STAM
600/1900
[283/896]
7.60
[0.70]
13/3 2 – 5 0.080 0.080 0.092 0.106 0.121 0.136 0.153 0.171 0.190 0.211 0.232 0.254 0.278 0.302
6024STAM
600/1900
[283/896]
9.98
[0.93]
14/3 24 5 0.023 0.023 0.038 0.055 0.074 0.095 0.119 0.144 0.171 0.200 0.231 0.264 0.300 0.337
Important Note: Gas furnace heating CFM can exceed the design cooling CFM. Ductwork and coil selection must accommodate the higher of the cooling or gas heating CFM to prevent furnace limit tripping,
excessive noise, and coil freeze-up.
[ ] Designates Metric Conversions
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Coil Dimensions and Weights
DRAEF Series
Table 2: Coil Dimensions and Weights
FRONT VIEW
SIDE VIEW
FIGURE 1: DIMENSIONS UNCASED
[ ] Designates Metric Conversions
Coil
Model
DRAEF
Connections
Uncased Coil Dimensions
(in) [mm]
Weight
Sweat (in.) [mm]
Liquid Suction
AB
Coil Weight
(lbs.) [Kg.]
Shipping Weight
(lbs.) [Kg.]
I.D. I.D.
2414ST
3
/8 [9.53]
3
/4 [19.05] 213/4 88[552] 127/8 [327] 43 [19] 47 [21]
2417ST
3
/8 [9.53]
3
/4 [19.05] 153/8 88[390] 163/8 [416] 43 [19] 48 [22]
3617ST
3
/8 [9.53]
3
/4 [19.05] 183/4 88[476] 163/8 [416] 49 [22] 54 [24]
3621ST
3
/8 [9.53]
3
/4 [19.05] 183/4 88[476] 197/8 [505] 51 [23] 60 [27]
3621MT/4821ST
3
/8 [9.53]
3
/4 [19.05] 265/8 88[676] 197/8 [505] 71 [32] 78 [35]
4821MT/6021ST
3
/8 [9.53]
7
/8 [22.23] 335/8 88[838] 197/8 [505] 76 [34] 86 [39]
6024ST
3
/8 [9.53]
3
/4 [19.05] 3015/16 [786] 233/8 [594] 100 [45] 108 [48]
*The 14 inch, 2 ton DRAEF coil (2414) is part of the “N-Coil” design series, even though the coil shape resembles an “A” coil design.
(TXV SHOWN)
(TXV SHOWN)
(EEV SHOWN)
1
/8
[3.1 mm]
11
/16
4
[119 mm]
13
/16 [46 mm]
1
11
1
/16 [42.8 mm]
5
1
/16
[33.3 mm]
SUCTION
TUBE
7
/16
3
5
[11.1 mm]
11
/16 [17.4 mm]
/8
[137 mm]
LIQUID
TUBE
9
3
/16
[90.4 mm]
213/8 [543 mm]
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53/8
[136.5 mm]
SUCTION LINE
LIQUID LINE
1
13
/16 [46 mm]
2
1
/4 [57.1 mm]
1
1
/4
[31.7 mm]
7
/16
[11.1 mm]
5
15
/16
[150.8 mm]
4
1
/8
[104.7 mm]
1
7
/16
[36.5 mm]
21
11
/16
[550.8 mm]
PRIMARY DRAIN
3
/4 N.P.T. (VERTICAL)
PRIMARY DRAIN
3
/4 N.P.T.
(VERTICAL &
HORIZONTAL)
SECONDARY DRAIN
3
/4 N.P.T. (VERTICAL)
NOTE:
FLANGES ARE
PROVIDED
FOR FIELD
INSTALLATION
1
/2 [12.7 mm]
FRONT VIEW
SIDE VIEW
FIGURE 1: DIMENSIONS CASED
➀ Casing top and bottom openings are the same dimensions.
[ ] Designates Metric Conversions
PLENUM WIDTH
Coil Dimensions and Weights
DRAEF Series
Table 2: Coil Dimensions and Weights
Coil
Model
DRAEF
Connections
Cased Coil Dimensions
(in) [mm]
Weight
Sweat (in.) [mm]
Liquid Suction
ABC
Coil Weight
(lbs.) [Kg.]
Shipping Weight
(lbs.) [Kg.]
I.D. I.D.
2414ST
3
/8 [9.53]
3
/4 [19.05] 14 1/2[356] 21 1/2[533] 233/16 [584] 43 [19] 47 [21]
2417ST
3
/8 [9.53]
3
/4 [19.05] 171/2 [445] 141/2 [368] 201/2 [508] 43 [19] 48 [22]
3617ST
3
/8 [9.53]
3
/4 [19.05] 171/2 [445] 177/8 [454] 201/2 [508] 49 [22] 54 [24]
3621ST
3
/8 [9.53]
3
/4 [19.05] 21 1/2[533] 171/2 [445] 201/2 [508] 51 [23] 60 [27]
3621MT/4821ST
3
/8 [9.53]
3
/4 [19.05] 21 1/2[533] 257/8 [657] 287/8 [711] 71 [32] 78 [35]
4821MT/6021ST
3
/8 [9.53]
7
/8 [22.23] 21 1/2[533] 327/8 [813] 341/2 [876] 76 [34] 86 [39]
6024ST
3
/8 [9.53]
3
/4 [19.05] 241/2 [622] 301/4 [768] 321/2 [826] 100 [45] 108 [48]
*The 14 inch, 2 ton DRAEF coil (2414) is part of the “N-Coil” design series, even though the coil shape resembles an “A” coil design.
197/8
[505 mm]
A MINUS ONE INCH ➀
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Accessories
DRAEF Series
Table 3: Coil Application
Coils can be matched to heating products as listed in table below.
Coil Model DRAEF
Furnace Width (In.) (mm)
Oil
Gas
2414ST/2417ST — 14 [356]
2417ST/3617ST 17
1
/2 [431]
171/2 [444]
14 [356]
3621ST/3621MT/4821ST/6021ST 21 [533]
21 [533]
171/2 [444]
6024ST 24
1
/2 [622]
241/2 [622]
21 [533]
2414S
RXHH-A01
2417M/2421M/3617S/
3621S/2421H
RXHH-A03
3621M/3624M/
4821S/4824S
RXHH-A04
Coil Model Horizontal Adapter Kit Model No.
2417S
RXHH-A02
3624H/4824H/
6024S/6024H
RXHH-A05
3621H/4821M/
6021S/6021M
RXHH-A06
Table 4: Horizontal Adapter Kit Model No.
Accessories
• PLENUM ADAPTER ACCESSORY
RXBA-AE
This plenum adapter accessory is for use with the 241/2" wide
cased indoor cooling and heat pump coils. This allows a 241/2"
wide cased coil to be installed on a 28" wide oil furnace. This is a
field-installed accessory only.
• RXBA-AC (Upflow/Horizontal)
These plenum adapter accessories are for use when a cooling
coil is matched with a gas furnace of one smaller size.
• HORIZONTAL ADAPTER KIT RXHH
This horizontal adapter kit is used to convert a upflow or downflow
only models to horizontal flow. See following table to order the
proper horizontal adapter kit.
AIR FLOW
HORIZONTAL-DUAL
DIRECTION
FIGURE 2: HORIZONTAL ADAPTER KIT ILLUSTRATION
R X B C — D 14 I
INSULATION
I = Insulated
Blank = Uninsulated
CABINET WIDTH
14 = 14" [356 mm]
17 = 17.5" [444 mm]
21 = 21" [533 mm]
24 = 24.5" [622 mm]
DESIGN SERIES
COIL CASING
BLOWER UNIT
ACCESSORY
DURASTAR
Table 5: Unit Dimensions and Weights- RXBC Indoor Coil Casings
RXBC-D17AI 171/2 [445] 20 [508] 18 [8] 161/2 [419]
RXBC-D21BI 21 [533] 28 [711] 27 [12] 20 [508]
RXBC-D24AI 241/2 [622] 321/2 [826]
Model
Number
34 [16]
Width
(in.) [mm]
231/2 [597]
Height
(in.) [mm]
Depth
(in.)
[mm]
Unit Weight
Supply Air/Return
Air Openings
RXBC-D21AI 21 [533] 20 [508] 20 [9] 20 [508]
1931/32
[508]
RXBC-D14AI 14 [356] 233/16 [589]
215/
8
[549]
19 [9] 13 [330]
23 [10]
23 [10]
36 [17]
44 [20]
26 [12]
Ship. Wt.
(lbs.) [Kg.]
Depth
(in.)
[mm]
Weight
(lbs.) [Kg.]
Width
(in.) [mm]
• INDOOR COIL CASING- RXBC (See Table 5)
HORIZONTAL ADAPTER KIT (RXHH-)
B14x20 131/8[333]
B17x20
165/8[422]
Uncased Coil Adapter
Model Number RXBA
A
Width (in.) [mm]
B21x20 201/8[511]
-HUxx14
-HUxx17
Uncased Coil
Model RCFP
-HUxx21
B24x20 235/8[599] -HUxx24
Table 6: Uncased Coil Adapter Kit
[ ] Designates Metric Conversions
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Accessories
DRAEF Series
FIGURE 4: UNCASED COIL ADAPTER KIT ASSEMBLED
Note: Sliding the coil into the coil rail before attaching coil rack front.
FIGURE 3: UNCASED COIL ADAPTER KIT ILLUSTRATION
• UNCASED COIL ADAPTER KIT
RXBA- (See Figure 3 & 4)
This uncased coil adapter kit is used to adapt the coil to a furnace or ductwork. See Table 6 to order the proper adapter kit.
Each kit contains a quantity of 20 adapters.
Accessories (cont.)
[ ] Designates Metric Conversions
11/2
[41 mm]
11
/16
7
[196 mm]
A
5
20
/16
[516 mm]
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10
Limited Warranty
DRAEF Series
GENERAL TERMS OF LIMITED WARRANTY*
Durastar will furnish a replacement for any part of this
product which fails in normal use and service within the
applicable periods stated, in accordance with the terms of
the limited warranty.
*For complete details of the Limited and Conditional Warranties, including
applicable terms and conditions, contact your local contractor or the
Manufacturer for a copy of the product warranty certificate.
Parts.......................................................................Five (5) Years
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Notes
DRAEF Series
Page 12
Before proceeding with installation, refer
to installation instructions packaged
with each model, as well as complying
with all Federal, State, Provincial, and
Local codes, regulations, and practices.
“In keeping with its policy of continuous progress and product improvement, Durastar reserves the right to make changes without notice.”
@2020 Ferguson Enterprises, LLC 0520 PRINTED IN U.S.A. 8- 20 QG FORM NO. CDS-224
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