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036-21096-001-C-0206
Unitary Products Group
5
Hot Water Coil
Accessory
Unit Model
GPM
CFM
Entering Water Temp. Minus Entering Air Temp.,
°
F
70
90
110
130
150
1HW0405
LEU240
35
6,400
179
229
280
331
382
8,000
199
255
312
369
425
9,600
220
282
344
407
469
*
These capacities do not include any blower motor heat.
NOTE:
Water Temperature Drop ( F)
2 x MBH
o
=
GPM
CAUTION:
Do NOT operate the supply air blower motor above its
nominal HP rating when a unit is equipped with a hot
water coil accessory.
Do NOT use steam in these hot water coils.
CAPACITY CORRECTION AND PRESSURE DROP VS GPM
Hot Water Coil
Accessory
GPM
Pressure Drop
+
PSI
Capacity Correction
Factor
1HW0405
15
0.2
0.74
35
0.8
1.00
55
1.5
1.04
75
2.5
1.06
+
For pressure drop in feet (water), multiply these values by 2.31.
STEAM COIL CAPACITY
1
, Mbh @ 2 psig
2
Steam Coil
Accessory
Unit Model
CFM
Dry Bulb Temperature of Air Entering Coil, °
Φ
10
30
50
70
1NF0453
LEU240
6,400
402
364
325
286
8,000
464
419
374
330
9,600
481
435
388
342
1
These capacities do not include any blower motor heat.
2
Multiply these capacities by the following factors to correct for higher steam pressures.
NOTE: Steam rate (lbs./hr.) = 1.025 x MBH.
CAUTION:
Do NOT operate the supply air blower motor above its nomi-
nal HP rating when a unit is equipped with a steam coil acces-
sory.
Although these coils are suitable for much higher pressures,
steam above 25 psig will provide too much heat and could
damage the blower motor.
Steam pressure, psig
5
10
15
20
25
Capacity correction factor
1.05
1.12
1.19
1.25
1.30
ACCESSORY STATIC RESISTANCES (IWG)
CFM
Supply
Air
Plenum
Return
Air
Grille
Non-
Freeze
Steam Coil
Hot
Water
Coil
6400
.03
.04
.14
.07
7200
.03
.05
.17
.08
8000
.04
.06
.21
.10
8800
.05
.07
.25
.12
9600
.06
.08
.29
.14
PLENUM PERFORMANCE
CFM
Throw, Feet
Minimum
Maximum
6400
80
145
8000
98
165
9600
115
185
HEATING COIL CAPACITIES
HOT WATER COIL CAPACITY*, Mbh
BLOWER MOTOR AND DRIVE DATA
Drive
Accessory
Model No.
Motor
Belt
Blower Pulley
Motor Pulley
RPM Range
HP
1
Frame
Shaft Size
Mfgs. No.
Size
Mfgs. No.
Size
1LD0404
600 - 775
3
56
7/8
A55
AK104
10 X 1-3/16
1VM50
3.4-4.4 x 7/8
1LD0406
775 - 970
5
184
1-1/8
A51
2
2AK94
9 X 1-3/16
2VP56
4.0-5.0 x 1-
1/8
1
All motors are 1750 RPM and have a 1.15 service factor.
2
Two matched belts.
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