Roberts Gorden Combat DF-Series - Manual (Page 2)

Make-Up Air (MUA) Models
Design: 100% replacement air with a fi xed discharge air volume.
Function: Supplies direct replacement air for building mechanical exhaust.
Application: Used as make-up air for industrial processes which
incorporate mechanical exhaust.
Air Management (AM) Models
(Not available on Model DF40)
Design: Variable outdoor air from 20% to 100% and a modulating burner
with a 30:1 turn-down ratio. Discharge air volume is fi xed.
Function: Automatically responds to building pressure and temperature
needs.
Application: Used in industrial and commercial buildings that have air
quality and specifi c air management requirements.
Fixed Recirculation (FR) Models
(Not available on Model DF40)
Design: Fixed 80% air turnover rate and 20% outdoor air replacement rate.
Discharge air volume is fi xed.
Function: Provides effi cient, low-cost heating where minimum ventilation
rates are required.
Application: Used in warehouses, distribution centers, retail outlets, etc.
Combat ® by Roberts-Gordon DF-Series
COMBAT® by Roberts-Gordon DF-Series air handlers improve indoor air quality and provide air comfort.
COMBAT® by Roberts-Gordon DF-Series air handlers can be designed to effi ciently establish and maintain a slightly
pressurized condition in your facility as outdoor air is gently tempered and, as required, mixed with existing indoor
air. NOTE: All models are available in upright or horizontal as well as indoor or outdoor confi gurations.
Bottom Discharge
Optional
Location
80% Return Air
Bottom Return
Optional Outside Air Damper
Bottom Discharge Bottom Return
Optional Outside Air Damper
Model Confi gurations
Bottom Discharge
Optional Outside Air Damper
Model DF40 DF75 DF150 DF270 DF410 DF700A DF700B
CFM 1,000 -
4,000
4,000 -
10,000 7,000 -
14,000 12,000 -
25,000
25,000
- 40,000
35,000
- 47,500
45,000 -
60,000
Output
[MBH]* 110 - 400 440 - 756 760 - 1500 1300 - 2700 2700 - 4100 3780 - 5130 4860 - 6480
* 1 MBH = 1,000 Btu/h