Roberts Gorden HE50, 1.800.828.7450, HE76N User Manual
®
Combat
DF-Series
Direct-Fired Heating, Cooling and Ventilation Systems
■ Improved indoor air quality – Helps
dilute and expel airborne contaminants
making exhaust systems operate more
e ciently.
■ Superior ventilation – System can be
designed to automatically modulate
outdoor air volume from 20% to 100% to
meet ventilation requirements in cold
weather and decrease heat buildup in
warm weather.
■ Consistent temperatures and less
strati cation – Optional cooling
e ectively reduces indoor air
temperatures to help keep people and
processes productive.
■ Cost savings – Heating systems deliver
100% of the heat generated into the
building resulting in energy savings.
■ Flexibility and convenience – Heating
systems require little to no ductwork
and can be installed indoors or outdoors.
■ Evaporative and mechanical cooling
packages available.
1.800.828.7450
Quality in Any Language
™
CANADA: 100% OUTSIDE AIR ONLY
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 e 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 con gurations.
Model DF40 DF75 DF150 DF270 DF410 DF700A DF700B
CFM 1,000 -
4,000
Output
110 - 400 440 - 756 760 - 1500 1300 - 2700 2700 - 4100 3780 - 5130 4860 - 6480
4,000 10,000
7,000 14,000
12,000 -
25,000
25,000
- 40,000
35,000
- 47,500
45,000 -
60,000
[MBH]*
* 1 MBH = 1,000 Btu/h
Model Con gurations
Optional
Outside Air Damper
Make-Up Air (MUA) Models
Design: 100% replacement air with a 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.
Bottom Discharge
Bottom Discharge
Bottom Discharge
Optional
Optional
Outside Air Damper
Bottom Return
Outside Air Damper
Bottom Return
Optional
Location
80% Return Air
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 xed.
Function: Automatically responds to building pressure and temperature
needs.
Application: Used in industrial and commercial buildings that have air
quality and speci 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 xed.
Function: Provides e cient, low-cost heating where minimum ventilation
rates are required.
Application: Used in warehouses, distribution centers, retail outlets, etc.
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