Factory Speed Tap Settings @ .3 ESP with Filter and Coil
Serie Model
Sp
Tap
Nom
-Tons
CFM Coil Range (See Coil Face Velocity Chart Below ) Max kW Blower Setting
E30B3D xxx
AAD
or
E30B3D xxx
ABD
T-1 1.5 580
96 - Series, 97 - Series , 98 - Series
5
Factory Setting T-5
T-2 2.0 750 8
T-3 2.5 925 8
T-4 3.0 1120 10
T-5 3.5 1300 12
E30B4D xxx
AAD
or
E30B4D xxx
ABD
T-1 2.0 800
96 - Series (Do Not use T-5 w /96 -),
97 - Series , 98-Series
12
Factory Setting T-4
T-2 2.5 950 15
T-3 3.0 1120 15
T-4 3.5 1260 17
T-5 4.0 1380 20
E30B5D xxx
AAD
or
E30B5D xxx
ABD
T-1 3.0 1080
98-Series Only
17
Factory Setting T-3
T-2 3.5 1300 20
T-3 4.0 1440 20
T-4 4.0 1520 20
T-5 5.0 1680 20
E30B3 **** 1/3 HP Motor
E30B4 **** 1/2 HP Motor
E30B5 **** 3/4 HP Motor
(+ ) Metering device , Piston, TXV
(+ + ) Refrigerant Connection, 0P, 2P, 3P, 4P or 6P
xxx Designates Kilowatts, 015 = 15 kW
CFM Shown with Dry Coil and Filter in place , Wet
Coil Correction 4-6%
Electric furnace temperature rise (TR) can be used to determine air flow rate in CFM. The CFM
can then be used to determine velocity across the coil face area using the chart below. For heat
pump applications, disable the heat pump heating mode. Set furnace to run all the heater strips
and then check return air and supply air temperature. The difference is the temperature rise (TR).
CFM = (kW x 3412 ) x (Voltage Correction Less Than 240 V ) x 1.08 / TR
Example: CFM = (15 kW x 3412 ) x .96 x 1.08 / 56 TR
CFM = 51180 x .96 x 1.08 / 56 = 948 CFM
Voltage Correction
< 240 V
.96 = 230 Volts
.92 = 220 Volts
.87 = 208 Volts
Coil Face Velocity Formula & Maximum Allowances
Coil Series CFM
Coil
Face Area
(Sq Ft)
Nominal
Face Velocity
(Ft/Min))
Coil Models (See Note Below )
Maximum
Face Velocity
(Ft/Min)
Note
96-Series
750 3.11 242 96-8(Z,5,G ,8,W )2(+ )-(+ + )P 300
WARNING
Exceeding these
nominal and /
or maximum
allowances may
cause water blow
off from the coil,
which; may damage
furnace, void furnace
warranty and limit
liability from
those damages
925 3.32 279 96-(R,M )(2,3,4)4(+ )-(+ + )P 300
1120 3.56 315 96-8(Z,2,3,4,5,G ,8,W )(3,5)(+ )-(+ + )P 320
1300 4.06 321 96-(8,R,M )(Z,2,3,4,5,G ,8,W )(4,6)(+ )-(+ + )P 325
97-Series 1380 4.44 311 97-(8,R,M )(Z,2,3,4,5,G ,8,W )(5,7)(+ )-(+ + )P 325
98-Series
1440 5.33 270 98-(8,R,M )(Z,2,3,4,5,G ,8,W )(7,10)(+ )-(+ + )P 330
1520 5.78 263 98-(8,R,M )(Z,2,3,4,5,G ,8,W )(8,11)(+ )-(+ + )P 330
1520 6.22 245 98-(8,R,M )(Z,2,3,4,5,G ,8,W )(9,12)(+ )-(+ + )P 330
1680 6.67 252 98-(8,R,M )(Z,2,3,4,5,G ,8,W )(10,13)(+ )-(+ + )P 330
1680 7.11 237 98-(8,R,M )(Z,2,3,4,5,G ,8,W )(11,14)(+ )-(+ + )P 330
1680 7.56 223 98-(8,R,M )(Z,2,3,4,5,G ,8,W )(12,15)(+ )-(+ + )P 330
1680 8.00 210 98-(8,R,M )(Z,2,3,4,5,G ,8,W )(13,17)(+ )-(+ + )P (See Example) 330
Air Velocity Formula : CFM / Coil Face Area = Air Ft/Min Example of Coil Complete Model #98-8G12Y-0P
Note: When setting up the speed tap on the E30B furnaces, the coil face area must be taken in to account so as not to exceed 330 Feet Per Minute of
air across the coil. Any thing higher will blow water off the coil and will be the responsibility of the installing contractor.
MORTEX PRODUCTS INC. 501 TERMINAL RD FORT WORTH, TX 76106 Page 20
Table 14: Constant Torque Motor Factory Speed Tap Settings
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