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356214-XIM-A-0108
32 Johnson Controls Unitary Products
NOTES: 1.Blower performance includes a gas-fired heat exchanger, fixed outdoor air, two-inch T/A filters and a dry evaporator coil.
2.Refer to the additional Static Resistances table.
ESP = External Static Pressure available for the supply and return air duct system. All internal unit resistances have been deducted from the total
static pressure of the blower.
* Do NOT
close the pulley below 1 turn open.
** Factory setting.
TABLE 15: SUPPLY AIR BLOWER PERFORMANCE (25 TON) - COOLING APPLICATIONS
300 MBH - BOTTOM DUCT CONNECTIONS
DM300 UNIT - DOWNFLOW DUCT CONNECTIONS (CFM)
BLOWER
SPEED (rpm)
PULLEY
TURNS OPEN
7500 CFM 8750 CFM 10000 CFM
ESP (iwg) OUTPUT (bhp) INPUT (kW) ESP (iwg) OUTPUT (bhp)
INPUT
(kW)
ESP (iwg) OUTPUT (bhp)
INPUT
(kW)
945 6.0 1.2 5.6 4.6 0.8 7.0 5.7 0.3 8.4 6.9
975 5.0 1.4 5.9 4.9 1.0 7.3 6.0 0.5 8.8 7.2
1005 4.0 1.6 6.2 5.1 1.2 7.7 6.3 0.7 9.2 7.6
1040 3.0 1.8 6.6 5.4 1.4 8.1 6.7 0.9 9.7 8.0
1070 2.0 2.0 6.9 5.7 1.6 8.5 7.0 1.1 10.2 8.3
1100 1.0 2.1 7.3 6.0 1.8 8.9 7.3 1.3 10.6 8.7
1130 0.0 2.3 7.6 6.2 2.0 9.3 7.6 1.5 11.0 9.0
DM300 UNIT - DOWNFLOW DUCT CONNECTIONS (m
3
/s)
BLOWER
SPEED (rpm)
PULLEY
TURNS OPEN
3.53 m
3
/Sec. 4.13 m
3
/Sec. 4.72 m
3
/Sec.
ESP (Pa) OUTPUT (bhp) INPUT (kW) ESP (Pa) OUTPUT (bhp)
INPUT
(kW)
ESP (Pa) OUTPUT(bhp)
INPUT
(kW)
945 6.0 303 5.6 4.6 198 7.0 5.7 71 8.4 6.9
975 5.0 347 5.9 4.9 244 7.3 6.0 120 8.8 7.2
1005 4.0 391 6.2 5.1 291 7.7 6.3 169 9.2 7.6
1040 3.0 443 6.6 5.4 347 8.1 6.7 228 9.7 8.0
1070 2.0 489 6.9 5.7 396 8.5 7.0 280 10.2 8.3
1100 1.0 536 7.3 6.0 445 8.9 7.3 332 10.6 8.7
1130 0.0 583 7.6 6.2 495 9.3 7.6 385 11.0 9.0
DM300 UNIT - DOWNFLOW DUCT CONNECTIONS - GAS HEAT MODELS (CFM)
BLOWER
SPEED (rpm)
PULLEY
TURNS OPEN
7500 CFM 8750 CFM 10000 CFM
ESP (iwg) OUTPUT (bhp) INPUT (kW) ESP (iwg) OUTPUT (bhp)
INPUT
(kW)
ESP (iwg) OUTPUT (bhp)
INPUT
(kW)
945 6.0 1.0 5.6 4.6 0.3 7.0 5.7 - - -
975 5.0 1.2 5.9 4.9 0.5 7.3 6.0 - - -
1005 4.0 1.4 6.2 5.1 0.7 7.7 6.3 - - -
1040 3.0 1.6 6.6 5.4 0.9 8.1 6.7 0.2 9.7 8.0
1070 2.0 1.8 6.9 5.7 1.1 8.5 7.0 0.4 10.2 8.3
1100 1.0 2.0 7.3 6.0 1.3 8.9 7.3 0.6 10.6 8.7
1130 0.0 2.2 7.6 6.2 1.5 9.3 7.6 0.8 11.0 9.0
DM300 UNIT - DOWNFLOW DUCT CONNECTIONS - GAS HEAT MODELS (m
3
/s)
BLOWER
SPEED (rpm)
PULLEY
TURNS OPEN
3.53 m
3
/sec. 4.13 m
3
/sec. 4.72 m
3
/sec.
ESP (Pa) OUTPUT (bhp) INPUT (kW) ESP (Pa) OUTPUT (bhp)
INPUT
(kW)
ESP (Pa) OUTPUT (bhp)
INPUT
(kW)
945 6.0 258 5.6 4.6 87 7.0 5.7 - - -
975 5.0 301 5.9 4.9 133 7.3 6.0 - - -
1005 4.0 345 6.2 5.1 180 7.7 6.3 - - -
1040 3.0 398 6.6 5.4 236 8.1 6.7 43 9.7 8.0
1070 2.0 444 6.9 5.7 285 8.5 7.0 94 10.2 8.3
1100 1.0 490 7.3 6.0 334 8.9 7.3 146 10.6 8.7
1130 0.0 537 7.6 6.2 384 9.3 7.6 199 11.0 9.0