Air Handling And Hot Water Coil Accessory Heating Capacity; Nc300 / 1Hw0406; Hot Water Coil Capacity Correction And Pressure Drop Vs Gpm - York R-410A Technical Manual

Air Handling and Hot Water Coil Accessory Heating Capacity

1

NC300 / 1HW0406

UNIT HOT WATER
MODEL COIL MODEL
NC300 1HW0406
1
These capacities do not include any blower motor heat.
NOTE: Temperature Water Drop (ºF) = (2 X MBH) / GPM.

Hot Water Coil Capacity Correction And Pressure Drop Vs GPM

HOT WATER COIL MODEL
1HW0406
1
For pressure drop in feet (water), multiply these values by 2.31.
Air Handling and Steam Coil Accessory Heating Capacity
NC300 / 1NF0454
UNIT STEAM COIL
MODEL MODEL
NC300 1NF0454
1
These capacities do not include any blower motor heat.
Steam Coil Capacity Correction Factors For High Steam Pressure
STEAM PRESSURE (PSIG)
CAPACITY CORRECTION FACTOR
NOTE: Steam Rate = (lbs/Hr.) = 1.025 x MBH
Johnson Controls Unitary Products
GPM CFM ENTERING WATER TEMPERATURE MINUS ENTRY AIR TEMPERATURE °F.
70
6,000 204
8,000 236
50
10,000 265
12,000 291
GPM
25
50
75
100
CFM
6,000
8,000
10,000
12,000
5
1.05
CAPACITY (MBH)
90 110
263 325
304 372
341 416
374 457
1
PRESSURE DROP
PSI
0.4
1.0
1.8
3.4
CAPACITY (MBH) @ 2 PSIG
DRY BULB TEMPERATURE OF AIR ENTERING COIL (°F)
10 30
471 424
535 483
592 535
642 580
10 15
1.12 1.19
505428-YTG-V-0417
130 150
384 443
440 508
492 568
540 623
CAPACITY CORRECTION
FACTOR
0.79
1.00
1.04
1.07
1
50 70
380 330
432 380
478 422
518 456
20 25
1.25 1.30
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