035-14841-000 Rev. A (0701)
14 UnitaryProductsGroup
TABLE 6: STATIC RESISTANCES
EXTERNAL STATIC PRESSURE DROP
DESCRIPTION
RESISTANCE, IWG
CFM
1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000
Economizer
*†
0.07 0.08 0.09 0.11 0.13 0.15 0.17 0.20 0.23 0.26 0.30
Electric Heaters
1
5 - 15 KW 0.04 0.05 0.06 0.07 0.08 0.10 0.12 0.14 0.16 0.19 0.22
20 - 30 KW 0.06 0.07 0.08 0.09 0.11 0.13 0.15 0.17 0.20 0.23 0.26
Bottom Duct Connections
*
0.06 0.07 0.08 0.09 0.10 0.11 0.12 0.14 0.16 0.19 0.22
Cooling Only
‡
0.08 0.10 0.12 0.14 0.16 0.18 0.20 0.23 0.26 0.29 0.32
*.
Deduct these resistance values from the available external static pressure shown in the respective Blower Performance Table.
†.
The pressure thru the economizer is greater for 100% outdoor air than for 100% return air. If the resistance of the return air duct system is less than 0.25IWG,
the unit will deliver less CFM
‡.
Add these resistance values to the available static resistance in the respective Blower Performance Table.
TABLE 7: MOTOR AND DRIVE DATA- BELT-DRIVE BLOWER
MODEL
BLOWER
RANGE
(RPM)
MOTOR
*
ADJUSTABLE
MOTOR PULLEY
FIXED
BLOWER PULLEY
BELT
HP RPM FRAME
SIZE
SERVICE
FACTOR
PITCH
DIA. (IN.)
BORE PITCH DIA. (IN.) BORE PITCH
LENGTH
DESIGNATIONS-
DHG 036 790 - 1,120 1-1/2 1,725 56 1.15 2.4 - 3.4 7/8 5.7 1 37.3 A36
DHG 048 790 - 1,120 1-1/2 1,725 56 1.15 2.4 - 3.4 7/8 5.7 1 37.3 A36
DHG 060 850 - 1,220 1-1/2 1,725 56 1.15 2.4 - 3.4 7/8 5.2 1 37.3 A36
*.
All motors have solid bases and are inherently protected. These motors can be selected to operate into their service factor because they are located in themovingair,
upstream of any
heating device
TABLE 8: ELECTRICAL DATA- BASIC UNIT
MODEL
DHG
POWER
SUPPLY
VOLTAGE LIMITATIONS
(SEE NOTE 1)
COMPRESSOR
COND.
FAN
MOTOR,
FLA
SUPPLY
AIR
BLOWER
MOTOR,
FLA
TOTAL
UNIT
AMPACITY
AMPS
MAX. FUSE
SIZE (SEE
NOTE 2) AMPS
MAX
HACR
BREAKER
SIZE
AMPS
MIN. MAX. RLA LRA FLA
036
208/230-3-60 187 253 14.1 110.0 2.3 5.3 25.2 35 35
460-3-60 414 504 7.1 54.0 1.4 3.1 13.3 20 20
048
208/230-3-60 187 253 14.1 110.0 2.3 5.2 25.1 35 35
460-3-60 414 504 7.1 54.0 1.4 2.6 12.8 15 15
060 208/230-3-60 187 253 16.0 137.0 2.3 6.0 28.3 40 35
460-3-60 414 504 8.3 69.0 1.4 3.0 14.8 20 20
Note: 1. Rated in accordance with ARI Standard 110, utilization range “A”. 2. Dual Element, time delay type. 3. Based on 75º copper conductors.