Trane DFIA, DFOA Catalogue
Product Catalog
Direct-Fired Make-Up
Air Units
DFIA
DFOA
November 2009
MUA-PRC007-EN
Introduction
Why use Trane Makeup Air Units…
Trane’s innovative Direct Fired gas heating systems add warm, fresh and clean air to your work
environment for about 20 precent less than the operation and maintenance costs of indirect gas
heat.
• Heats Without Complications: The Direct Fired gas heating system heats efficiently and cost-
• Replaces Indoor Air: The Direct Fired gas heating system replaces indoor air that can become
• Provides Ventilation: Fresh air is available simply by turning off the heating section.
• Cleans and Tempers Incoming Air: The optional filter bank removes airborne particles, and
• Trane offers two styles of Direct Fired gas heating systems:
What Is Make-Up Air?
Make-up air is an outside air supply that is brought in to relieve “air starvation.” Without make-up
air, a building is under a “negative” condition and the following will occur:
• Backdrafts in natural flues, ventilators and stacks.
• Reduced air volume handled by the exhaust fans and subsequently inadequate removal of
• Dispersal of contaminants throughout the work area by high velocity cross-currents from
• Uncomfortable and unhealthy working conditions.
• Pilot outages.
effectively using no heat exchanger.
chemical laden in an industrial process or commercial cooling application.
cleaned air is heated to create a more refreshing and comfortable indoor environment.
– Indoor units (DFIA)
– Large outdoor units (DFOA)
contaminants.
uncontrolled outside air sources.
When Is It Required?
Make-up air is required whenever exhaust fans are used. This need for a building “air change”
arises when there are:
• Processes which generate contaminants in the form of noxious fumes or dust.
• Activities which create excessive heat or undesirable odors.
• Hazardous material storage areas.
• Ventilation requirements for a building’s inhabitants.
• State and local code requirements.
Why Use Make-Up Air Units?
Outside air should not be allowed to drift in through windows, door cracks and other openings,
creating a strain on the heating system. Outside air should be controlled, tempered and
coordinated with the exhaust by a make-up air unit. The latter is reliable, efficient and does not
disrupt building activities.
Why Use Direct Gas-Firing?
Maximum economy is realized with direct gas-firing because the incoming air is heated directly in
the burner chamber. This provides 100 percent efficiency (92 percent sensible, 8 percent latent)
while eliminating a heat exchanger or combustion chamber that could burn out or corrode.
Trane direct-fired units are factory tested, include the necessary controls for operating the system
and generally cost less than alternate systems.
© 2009 Trane All rights reserved MUA-PRC007-EN
Introduction
Installation is simple since the unit, (when shipping permits), is shipped as a complete package.
The burner is fully modulating, with a minimum firing rate of four percent of full input. This
characteristic results in just the right amount of heat under all operating conditions.
Industry Approval
ETL Labeling Requirements
A DFOA/DFIA unit can bear the ETL label if:
• The unit airflow is within the SCFM range shown in Tabl e 3 , p . 18 (DFIA) and Table 12, p. 33
(DFOA).
• The fuel is natural gas with a temperature rise not greater than 130°F or the fuel is LP and the
temperature rise not greater than 100°F.
• The motor is a single speed motor, or if the motor is a two speed motor, the burner will operate
in only one of the two speeds (high or low speed).
• Unit components are standard (there are exceptions to this).
• If the unit has return air, the unit must have a mixing box with the AdaptAire airflow station.
Maximum Emission Levels:
• If the unit has an ETL label, the maximum levels of the products of combustion meet
ANSI Z83.18 which are:
• Carbon Dioxide 4000 ppm
• Carbon Monoxide 5 ppm
• Aliphatic Aldehydes 1 ppm
• Nitrogen Dioxide 0.50 ppm
CETL Labeling Requirements (Canada)
A DFOA/DFIA unit will have a CETL label if the unit meets the first five items of “ETL Labeling
Requirements” (above), AND the unit does not have return air.
Trademarks
Trane and the Trane logo are trademarks of Trane in the United States and other countries. All
trademarks referenced in this document are the trademarks of their respective owners.
MUA-PRC007-EN 3
Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Application Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
The Need for Make-Up Air Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Unit Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Horizontal Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Vertical Configurations (DFOA only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Vertical Configurations (DFIA only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
DFIA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Model Number Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Weights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Outdoor Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
What Fuel to Use? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Burner Selection Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Reliable Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Equipment Approval Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Special Construction Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
DFOA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Model Number Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Basic Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Gas-Fired Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Performance Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Gas Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
Electrical Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Motorized 75/25 Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Mixing Box—Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Mixing Box—Manual Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Mixing Box—Building Pressure Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Motorized Inlet Damper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Exhaust Interlock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
4 MUA-PRC007-EN
UV Flame Sensor (UV Mini-Peeper) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Optional Gas Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Factory Installed Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
Additional Options* . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
Additional Factory Installed Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Field Installed Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Mechanical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
MUA-PRC007-EN 5
Application Considerations
The Need for Make-Up Air Units
When more air is exhausted from a building than is supplied by the mechanical systems, the
building is under a “negative” condition. Air will leak into the building through cracks, windows,
and doors.
• Make-up air units are typically used to compensate for air being exhausted from a building or
other structure.
• Application for closed systems such as ovens or paint booths (consult home office).
• For use as a door heater where outside air is heated and not prevented from infiltrating.
• The DFOA/DFIA can be used as an air handler, no burner section. Can also be used with DX,
electric, CW, HW and steam coils. Contact your Trane representative.
Figure 1. Application and various modular arrangements (DFIA only)
Outdoor Units
Outdoor make-up air units are the most common approach to relieving negative pressure inside
commercial and industrial facilities. All units offer the advantage of a full support system that is
watertight, provides a plenum for return air, and has easily accessible piping and electrical
connections.
When a negative condition exists:
• Flues and stacks may experience a backdraft and cause dangerous contaminants to remain in
the occupied space. In the case of flues, the products of combustion may condense and corrode
the equipment.
• Under negative conditions, the exhaust system sees a greater static pressure. The capacity of
each fan is reduced and this results in an inadequate removal of contaminants.
6 MUA-PRC007-EN
• Drafts and cross-currents will increase in a negative condition, causing an uncomfortable or
What Fuel to Use?
The most common fuel for heating make-up air is natural gas. This is because 100 percent of the
energy goes into the air stream (92 percent sensible, 8 percent latent). Direct firing eliminates the
need for heat exchangers or combustion chambers that can corrode or leak. Natural gas is often
the least expensive fuel and is usually readily available.
Note: Selected horizontal and vertical units are available with special coil options (DX, chilled
Application Considerations
unhealthy work environment.
water, steam or electric).
MUA-PRC007-EN 7
Selection Procedure
Calculating Total External Static Pressure to Determine Fan Motor Horsepower. To
determine the fan motor horsepower, use the following steps:
1. Select Unit
– Determine cabinet size and cfm
2. Determine Static Pressure of Optional Accessories
– Add the static pressures of the optional accessories.
3. Determine External Static Pressure
– Calculate external static pressure of system due to ductwork, grilles, etc. This is the static
pressure external to the DFIA/DFOA unit and is up to the system designer to determine.
4. Calculate Total External Static Pressure
– Add the static pressures of the optional accessories to the external static pressure to
determine total external static pressure.
5. Use the Tabl e 1 , p . 1 6 (DFIA) and Table 10, p. 31 (DFOA) to determine the fan motor horsepower.
Example:
1. Specification calls for a 40,000 cfm unit. Select a size 225.
2. Unit will require an inlet hood, inlet damper and a v-bank filter. Therefore,the static pressure
of the optional accessories is 0.51 in. wc.
Fresh air inlet hood and birdscreen 0.13 in. wc
Motor operated inlet damper 0.13 in. wc
V-bank filter section 0.25 in. wc
Static pressure of optional accessories 0.51 in. wc
3. Engineer has determined that the external static pressure due to the ductwork is 0.75 in. wc.
4. Static Pressure of optional accessories 0.51 in. wc
External static pressure 0.75 in. wc
Total External Static Pressure 1.26 in. wc
5. For a size 225 unit at 40,000 cfm and 1.26 in. total external static pressure, a 30 hp fan motor will
be required.
8 MUA-PRC007-EN
Burner Selection Procedure
For DFIA selections, use Tab l e 3 , p . 18, and select next size larger available burner. For DFOA
selections, use Table 12, p. 33.
Note: Table is based on an entering air temperature of -40°F.
Example: an 80°F temperature rise is desired for 18000 scfm.
The table shows a MBh input of 1788 MBh.
Select the 1925 MBh input burner (Digit 14, 15 = AH)
OR
Use the following formula:
MBh input = (0.6210 x scfm x TR)
(0.6210 X ) / (460 + TR + EAT)
where:
TR = Temperature Rise (Desired leaving air temperture – entering air temperature)
EAT = Temperature Rise (Desired leaving air temperture – entering air temperature)
Selection Procedure
(460 + 80 + 10)
Example: A desired leaving air temperature of 90°F is required for 18000 scfm.
The entering air temperature is 10°F.
Temperature rise (TR) = 90 – 10 = 80°F
MBh input = (0.6210 x 18000 x 80)
(460 + 80 + 10)
Select the 1650 MBh input burner (Digit 14, 15 = AG)
= 1626 MBh input
MUA-PRC007-EN 9
Unit Configuration
Fan Arrangement #4
Side Discharge
Fan Arrangement #6
Side Discharge
Horizontal Configurations
For all arrangements shown, controls, gas piping and fan motor are on the near side. Selected
horizontal units are available with special options — cooling coils (DX, chilled water), steam and
electric coils, no burner section. Contact your Trane representative for availability and pricing.
Figure 2. Horizontal configurations
Fan Arrangement #1
Top Discharge (For outdoor only)
Fan Arrangement #2
Side Discharge
Vertical Configurations (DFOA only)
For all arrangements shown, the gas piping and controls are on the near side. Selected vertical units
are available with special options — steam and electric coils, no burner section.
Figure 3. Vertical configuration (DFOA only)
Fan Arrangement #3
Bottom Discharge
10 MUA-PRC007-EN
Vertical Configurations (DFIA only)
Fan Arrangement #9
Side Discharge
Fan Arrangement #6
Top Discharge
EC
EC
Fan Arrangement #8
Side Discharge
Fan Arrangement #5
Side Discharge
EC
EC
Fan Arrangement #7
Top Discharge
Fan Arrangement #4
Side Discharge
EC
EC
For all arrangements shown, the gas piping is on the near side. The electric control cabinet (EC) and
disconnect are on the side opposite the air entering side. Selected vertical units are available with
special options – steam and electric coils, no burner section. Contact your Trane representative for
availability.
Figure 4. Vertical configurations (DFIA only)
Unit Configuration
MUA-PRC007-EN 11
DFIA
Model Number Descriptions
Digit 1, 2, 3 — Unit Description
DFI = Direct fired indoor unit
Digit 4 — Development
Sequence
A = First Generation
Digit 5 — Unit Size
109 120 215 225
112 122 218 230
115 125 220
118 130 222
Digit 8 —Burner Section
0 = No Burner Section
1 = Burner Section
Digit 9 —Main Power Supply
A = 115/60/1 D = 208/60/3
B = 230/60/1 E = 230/60/3
C = 208/60/1 F = 460/60/3
Digit 10 — Design Sequence
H = Eighth Design
Digit 11 — Fuel
N= Natural Gas
P=LP (Propane) Gas
Digit 12 — Gas Control Option
E = Modulating Discharge Temp
Control (MDT)
F = Modulating Room Temp Control
(MRT)
G = Modulating Room Temp Control
& Pro Room Sensor (MRT Pro)
H = Modulating Room Temp Control
& BACview
Digit 13 — Gas Train Approvals
0 = No Selection
1=Standard Gas Train
3 = IRI Gas Train Approval (ETL)
4 = FM Gas Train Approval (ETL)
5 = IRI Gas Train Approval (No ETL)
6 = FM Gas Train Approval (No ETL)
®
(MRT Expert)
Digit 14, 15 — Burner Input
Rating (Natural Gas/Propane)
00 = No Burner Input Selection
AA = 275/225 MBh
AB = 550/450 MBh
AC = 825/885 MBh
AE = 1100/1125 MBh
AF = 1375/1350 MBh
AG = 1650/1575 MBh
AH = 1925/1800 MBh
AJ = 220 0/2025 MBh
AK = 2475/2475 MBh
AL = 2750/2700 MBh
AN = 3025/2925 MBh
AP = 3300/3150 MBh
AQ = 3575/3375 MBh
AR = 3850/3825 MBh
AT = 4125/4050 MBh
AV = 4400/4275 MBh
AW = 4675/4500 MBh
AX = 4950/4950 MBh
AY = 5225/5175 MBh
AZ = 5500/5400 MBh
A1 = 5775/5624 MBh
A2 = 6050/5850 MBh
A3 = 6325/6075 MBh
A4 = 660 0/6525 MBh
A5 = 6875/6750 MBh
A6 = 7150/6975 MBh
A7 = 7425/7425 MBh
A8 = 770 0/7650 MBh
A9 = 7975 MBh
BA = 8250 MBh
BB = 8525 MBh
BC = 8800 MBh
BD = 9075 MBh
Digit 16 — Blower Motor
Horsepower
0 = No Selection J = 10 hp
B = 3/4 hp K = 15 hp
C=1 hp L=20 hp
D = 1-1/2 hp M = 25 hp
E=2 hp P=30 hp
F=3 hp Q=40 hp
G= 5 hp R= 50 hp
H = 7-1/2 hp T = 60 hp
Digit 17 — Motor Speed and
Starter
0 = No Selection
1 = Single Speed odp 1800 rpm
2 = Single Speed tefc 1800 rpm
3 = Single Speed Ener. Effic odp
4 = Single Speed Ener. Effic tefc
5 = 2s1w odp 1800/900 rpm
6 = 2s2w odp 1800/1200 rpm
Digit 18 — Fan Arrangement
1 = Horizontal Arrangement 1 Top
2 = Horizontal Arrangement 2 Side
3 = Horizontal Arrangement 3 Bottom
4 = Vertical Arrangement 4 Side
5 = Vertical Arrangement 5 Side
6 = Vertical Arrangement 6 Top
7 = Vertical Arrangement 7 Top
8 = Vertical Arrangement 8 Side
9 = Vertical Arrangement 9 Side
Digit 20 — V-Bank Filter Section
0 = No V-Bank Filter Section
A = V-Bank Section with Permanent
Filters
B = V-Bank Section without
Permanent Filters
C = V-Bank Section with TA Filters
D = V-Bank Section with Pleated
Filters
Digit 21 — Dampers/Mixing Box
0 = No Damper/Mixing Box Selected
(No ETL)
A = Motorized Return Air Damper
(No ETL)
B = Motorized Damper 75/25 (No ETL)
C = Mixing Box - Temperature Control
(No ETL)
D = Mixing Box - Building Press
Control (No ETL)
E = Mixing Box - Manual Control
(No ETL)
F = Mixing Box with Airflow
Station - Manual Control (ETL)
G = Mixing Box with Airflow
Station - Temp Control (ETL)
H = Mixing Box with Airflow
Station - Bldg. Press Control (ETL)
Digit 22, 23 — Controls Opposite
from Standard
** = Standard Controls
AA = Controls Opposite from Standard
Digit 24, 25 — Motorized Inlet
Damper
** = No Motorized Inlet Damper
AB = Motorized Inlet Damper
Digit 26, 27 —Insulation
AC = Insulation on Entire Unit
(Include Filter)
Digit 28, 29 —115V Duplex
Service Receptable with Trans.
AJ = 115V Duplex Service Receptacle
with Trans.
Digit 30, 31 — Painted Cabinet
AZ = Painted Cabinet
DIGIT 32, 33 — UV Flame Sensor
AL = Ultraviolet (UV) Flame Sensor
12 MUA-PRC007-EN
Digit 34, 35 —Clogged Filter
Indicator
AN = Clogged Filter Indicator
Digit 36, 37— Exhaust Interlock
AP = Exhaust Interlock
Digit 38, 39 — Interlocking Relay
AQ = Interlocking Relay
Digit 40, 41 — Omit Disconnect
Switch
DS = Disconect Switch
AT = Omit Disconnect Switch
Digit 42, 43 — High Gas Pressure
Regulator
CA = High Gas Press Reg 0.5–1 psi
AV = High Gas Press Reg –5 psi
AW = High Gas Press Reg 5–10 psi
BH = High Gas Press Reg Over 10 psi
Digit 44, 45 — Adjustable Drive
AX = Adjustable Drive
Digit 46, 47 — Low Gas Pressure
Burner
BJ = Low Gas Pressure Burner
Digit 48, 49 — Vibration Options
A5 = Vibration Feet
A6 = Vibration Hangers
Digit 50, 51 — Control Options
BD = 7-Day Time Clock
BG = On/off Night Setback Thermostat
BF = BACview
®
Remote Panel
Digit 52, 53 — Discharge Louver
AY = Discharge Louver
0=None
DFIA
MUA-PRC007-EN 13
DFIA
Discharge fan section
Gas burner section
V-bank Filter with hinged access door
Gas manifold and control cabinet
Features and Benefits
Figure 5. DFIA features and benefits
14 MUA-PRC007-EN
Feature: Basic unit is factory assembled and wired.
Benefit: Reduces field installation cost.
Feature: Factory tested.
Benefit: Eliminates majority of field start-up problem caused by defective controls.
Feature: Adjustable motor mount.
Benefit: Belt tension can be field adjusted for maximum belt life.
Feature: All fuses factory furnished.
Benefit: Delay at start-up eliminated.
Feature: Return air cycle capability.
Benefit: Return air cycle results in fuel economy for pressurized heating systems and eliminates
need for two-speed fan operation. Minimizes heating cost.
Feature: No flues or stacks are used.
Benefit: Eliminates backdraft and dangerous contaminants from entering the space.
Reliable Operation
The standard unit includes all of the controls needed for trouble-free operation.
If the designer does not utilize a master panel for consolidating mechanical equipment, an optional
remote control station should be ordered.
This device includes switches and signal lights for operating the make-up air unit and monitoring
its performance from any convenient location.
While rare, malfunctions can occur because a belt breaks, local power is interrupted or a
component fails. If this should happen, the unit’s control system is designed to take over. Its
overlapping fail-safe protective devices will turn on an alarm light and prevent burner operation
until the problem has been corrected.
Because of this attention to detail, combustion will be clean and odorless under the most adverse
conditions. The incoming “make-up air” will be at least five times purer than the requirements set
down by the U.S. Bureau of Standards.
Equipment Approval Options
Owners and specifiers have three very important reasons for wanting equipment approvals. One
reason is to establish a manufacturer’s reliability.
A second looks for conformance with equipment standards if any have been established for the
particular product. And finally, there may be requirements set down by an industrial user’s
insurance carrier.
Trane has gone to great lengths to satisfy these needs. In the first case, reliability is established for
our standard unit through conservative design and the use of U.L. listed components.
For industrial applications, the unit can also be furnished with special gas controls to comply with
FM or IRI. The latter is available for applications where the exact insurance approval agency has
not been established.
DFIA
Special Construction Features
• External bearings for easy service and lubrication.
• External motor for ease of service and belt maintenance.
• Hollow fan shaft on double blower models eliminate the need for a center bearing which is
difficult to service.
• Enlarged filter sections increasing filter life and reducing service time.
• Hinged filter access door.
• Service platform available as an option for easy maintenance on suspended units.
MUA-PRC007-EN 15
DFIA
Performance Data
Table 1. Direct-Fired Indoor Air (DFIA) unit—General data
Unit Size 109 112 115 118 120 122 125 130 215 218 220 222 225 230
Airflow
Min. Airflow (cfm) 1600 3250 4 500 6500 9000 11000 14000 22000 9000 12500 18000 25000 30000 44000
Max. Airflow (cfm) 3000 4250 6 000 8500 11000 15000 20000 30000 12000 17000 26000 31000 46000 64000
Fan
Quantity - Wheel Size 1 - 9 1 - 12 1 - 15 1 - 18 1 - 20 1 - 22 1 - 25 1 - 30 2 - 15 2 - 18 2 - 20 2 - 22 2 - 25 2 - 30
Motor (hp) 1–5 1.5–5 2–7.5 3–10 5–10 5–15 7.5–20 10–30 5–15 7.5–20 7.5–25 15–30 15–50 20–60
Filters, 2-in
Quantity 4 4 9 9 10 10 24 24 18 18 35 35 42 42
Size (in) 20x20 20x20 20x16 20x16 20x25 20x25 20x16 20x16 20x15 20x15 20x16 20x16 20x20 20x20
Table 2. Direct-Fired Indoor Air (DFIA) unit—Performance data
Models
DFI
109 1–9
112 1–12
115 1–15
118 1–18
120 1–20
Note: Use the following static pressures for the optional accesso ries:
1. Motor Operated Inlet Damper: 0.13 in. wc
2. V-Bank Filter Section: 0.25 in. wc
3. Mixing Box: 0.40 in. wc
4. Discharge Louver: 0.13 in. wc
Blower
Size (in.)
Std Air
at 70
1600 1914 1111————
1900 2273 1 1 1-1/2 1-1/2 1-1/2 1-1/2 2 —
2200 2632 1-1/2 1-1/2 1-1/2 1-1/2 2 2 2 3
2600 3110 22223333
3000 3589 33333335
3250 2257 1-1/2 2222333
3500 2431 22223335
3750 2604 22333335
4000 2778 33333355
4250 2951 33333555
4500 2239 2233335—
5000 2488 33333555
5500 2736 33335555
6000 2985 35555557-1/2
6500 2265 35555557-1/2
7000 2439 5555557-1/27-1/2
7500 2613 555557-1/27-1/27-1/2
8000 2787 55557-1/27-1/27-1/27-1/2
8500 2962 5 5 5 7-1/2 7-1/2 7-1/2 7-1/2 10
9000 2143 55557-1/27-1/27-1/2—
9500 2262 5 5 5 7-1/2 7-1/2 7-1/2 7-1/2 —
10000 2381 5 5 5 7-1/2 7-1/2 7-1/2 7-1/2 10
10500 2500 5 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 10 10
11000 2619 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 10 10 10
CFM
FPM
Outlet
Velocity
1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2
Total External Static Pressure (in. wc)
Horsepower
16 MUA-PRC007-EN
Table 2. Direct-Fired Indoor Air (DFIA) unit—Performance data (continued)
DFIA
Models
DFI
122 1–22
125 1–25
130 1–30
215 2–15
218 2–18
220 2–20
Note: Use the following static pressures for the optional accesso ries:
1. Motor Operated Inlet Damper: 0.13 in. wc
2. V-Bank Filter Section: 0.25 in. wc
3. Mixing Box: 0.40 in. wc
4. Discharge Louver: 0.13 in. wc
Blower
Size (in.)
Std Air
at 70
11000 2157 5 5 7 -1/2 7-1/2 7-1/2 7-1/2 10 —
12000 2353 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 10 10 15
13000 2549 7-1/2 7-1/2 7-1/2 10 10 10 10 15
14000 2745 7-1/2 10 10 10 10 15 15 15
15000 2941 — 10 10 10 15 15 15 15
14000 2086 7-1/2 7-1/2 7-1/2 7-1/2 10 — — —
15000 2235 7-1/2 7-1/2 7-1/2 10 10 10 15 —
16000 2385 7-1/2 7-1/2 7-1/2 10 10 15 15 —
18000 2683 10 10 10 10 15 15 15 15
20000 2981 15 15 15 15 15 15 15 20
22000 2486 10 10 10 15 15 15 15 —
24000 2581 10 15 15 15 15 15 20 20
26000 2796 15 15 15 15 20 20 20 25
28000 3011 15 15 15 20 20 20 20 25
30000 3226 20 20 20 20 20 25 25 30
9000 2239 55555———
9500 2363 55557-1/27-1/2——
10000 2488 5 5 5 7-1/2 7-1/2 7-1/2 7-1/2 —
10500 2612 5 5 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 —
11000 2736 5 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 10 10
11500 2861 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 10 10 10
12000 2985 7-1/2 7-1/2 7-1/2 7-1/2 10 10 10 15
12500 2178 7-1/2 7-1/2 7-1/2 7-1/2 7-1/2 — — —
13000 2265 7-1/2 7-1/2 7-1/2 7-1/2 10 10 — —
14000 2439 7-1/2 7-1/2 7-1/2 10 10 10 15 —
15000 2613 7-1/2 10 10 10 10 15 15 15
16000 2787 10 10 10 10 15 15 15 15
17000 2962 10 10 10 15 15 15 15 20
18000 2143 7-1/2 10 10 10 15 15 15 —
19000 2262 10 10 10 10 15 15 15 —
20000 2381 10 10 10 15 15 15 15 20
21000 2500 10 15 15 15 15 15 20 20
22000 2619 15 15 15 15 15 15 20 20
23000 2738 15 15 15 15 15 20 20 20
24000 2857 15 15 15 15 20 20 20 25
25000 2976 15 15 15 20 20 20 20 25
26000 3095 15 20 20 20 20 20 25 25
CFM
FPM
Outlet
Velocity
1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2
Total External Static Pressure (in. wc)
Horsepower
MUA-PRC007-EN 17
DFIA
Table 2. Direct-Fired Indoor Air (DFIA) unit—Performance data (continued)
Models
DFI
222 2-22
225 2-25
230 2-30
Note: Use the following static pressures for the optional accesso ries:
1. Motor Operated Inlet Damper: 0.13 in. wc
2. V-Bank Filter Section: 0.25 in. wc
3. Mixing Box: 0.40 in. wc
4. Discharge Louver: 0.13 in. wc
Blower
Size (in.)
Std Air
at 70
25000 2451 15 15 15 15 20 20 20 25
26000 2549 15 15 15 20 20 20 20 25
27000 2647 15 15 15 20 20 20 25 25
28000 2745 15 20 20 20 20 25 25 30
29000 2843 20 20 20 20 25 25 25 30
30000 2941 20 20 20 20 25 25 25 30
31000 3039 20 20 20 25 25 25 30 30
30000 2235 15 15 15 15 20 20 — —
32000 2385 15 15 15 20 20 25 25 —
34000 2534 15 20 20 20 20 25 25 30
36000 2683 20 20 20 20 25 25 30 30
38000 2832 20 20 20 25 25 30 30 40
40000 2981 20 25 25 25 30 30 30 40
42000 3130 25 25 25 30 30 30 40 40
44000 3279 25 30 30 30 40 40 40 40
46000 3428 30 30 30 40 40 40 40 50
44000 2366 20 20 20 25 25 30 — —
48000 2581 20 25 25 25 30 30 40 —
52000 2796 25 25 30 30 40 40 40 50
56000 3011 30 30 30 40 40 40 40 50
60000 3226 30 40 40 40 40 50 50 50
64000 3441 40 40 40 50 50 50 50 60
CFM
FPM
Outlet
Velocity
1/4 3/8 1/2 3/4 1 1-1/4 1-1/2 2
Total External Static Pressure (in. wc)
Horsepower
Table 3. Direct-Fired Indoor Air (DFIA) unit—Burner selection table (MBh)
DFIA Model
109
112
18 MUA-PRC007-EN
CFM Std. Air
70° 70° Rise 80° Rise 90° Rise 100° Rise 110° Rise 120° Rise 130° Rise
1600 142 159 175 191 206 221 235
1900 169 189 208 227 245 262 279
2200 195 219 241 263 284 304 323
2600 231 258 285 311 335 359 382
3000 266 298 329 358 387 414 440
3250 288 323 356 388 419 449 477
3500 311 348 384 418 451 483 514
3750 333 373 411 448 483 518 550
4000 355 397 438 478 516 552 587
4250 377 422 466 508 548 587 624
Table 3. Direct-Fired Indoor Air (DFIA) unit—Burner selection table (MBh) (continued)
DFIA Model
115
118
120
122
125
130
215
218
CFM Std. Air
70° 70° Rise 80° Rise 90° Rise 100° Rise 110° Rise 120° Rise 130° Rise
4500 399 447 493 537 580 621 661
5000 444 497 548 597 644 690 734
5500 488 546 603 657 709 759 807
6000 532 596 658 717 773 828 881
6500 577 646 712 776 838 897 954
7000 621 696 767 836 902 966 1027
7500 616 704 792 880 968 1057 1101
8000 710 795 877 955 1031 1104 1174
8500 754 845 932 1015 1096 111733 1248
9000 798 894 986 1057 1160 1242 1321
9500 798 894 986 1057 1160 1242 1321
10000 887 994 1096 1194 1289 1380 1468
10500 863 986 1109 1233 1356 1479 1541
11000 976 1039 1205 1314 1418 1518 1615
11000 976 1039 1205 1314 1418 1518 1615
12000 1065 1192 1315 1433 1547 1656 1761
13000 1153 1292 1425 1553 1676 1794 1908
14000 1242 1391 1534 1672 1804 1932 2055
15000 1331 1409 1644 1791 1933 2070 2202
14000 1242 1391 1534 1672 1804 1932 2055
15000 1331 1409 1644 1791 1933 2070 2202
16000 1419 1590 1753 1911 2062 2208 2349
17000 1508 1689 1863 2030 2191 2346 2495
18000 1597 1788 1973 2150 2320 2484 2642
20000 1774 1987 2192 2388 2578 2760 2936
22000 1952 2186 2411 2627 2836 3036 3229
24000 2129 2385 2630 2866 3093 3312 3523
26000 3207 2583 2849 3105 3351 3588 3816
28000 2484 2782 3069 3344 3609 3864 4110
30000 2661 2981 3288 3583 3867 4140 4404
9000 798 894 986 1057 1160 1242 1321
9500 798 894 986 1057 1160 1242 1321
10000 887 994 1096 1194 1289 1380 1468
10500 863 986 1109 1233 1356 1479 1541
11000 976 1039 1205 1314 1418 1518 1615
11500 1020 1143 1260 1373 1482 1587 1688
12000 1065 1192 1315 1433 1547 1656 1761
13000 1153 1292 1452 1553 1676 1794 1908
14000 1242 1319 1534 1672 1804 1932 2055
15000 1331 1490 1644 1791 1933 2070 2202
16000 1419 1590 1753 1911 2062 2208 2349
17000 1508 1689 1863 2030 2191 2346 2495
DFIA
MUA-PRC007-EN 19
DFIA
Table 3. Direct-Fired Indoor Air (DFIA) unit—Burner selection table (MBh) (continued)
DFIA Model
220
222
225
230
CFM Std. Air
70° 70° Rise 80° Rise 90° Rise 100° Rise 110° Rise 120° Rise 130° Rise
18000 1597 1788 1973 2105 2320 2484 2642
19000 1686 1888 2082 2269 2449 2622 2789
20000 1774 1987 2192 2388 2578 2760 2936
21000 1726 1972 2219 2465 2712 2958 3082
22000 1952 2186 2411 2627 2836 3036 3229
23000 2040 2285 2521 2747 2964 3174 3376
24000 2129 2385 2630 2866 3093 3312 3523
25000 2218 2484 2740 2986 3222 3450 3670
26000 2307 2583 2849 3105 3351 3588 3816
25000 2218 2484 2740 2986 3222 3450 3670
26000 2307 2583 2849 3105 3351 3588 3816
27000 2395 2683 2959 3224 3480 3726 3963
28000 2484 2782 2069 3344 3609 3864 4110
29000 2573 2881 3064 3404 3745 4085 4257
30000 2465 2817 3178 3463 3738 4002 4257
31000 2750 3080 3397 3702 3996 4278 4550
30000 2661 2981 3288 3583 3867 4140 4404
32000 2839 3180 3507 3822 4124 4416 4697
34000 3016 3378 3726 4060 4382 4692 4991
36000 3194 3577 3945 4299 4640 4968 5284
38000 3371 3776 4164 4538 4898 5544 5578
40000 3549 3974 4384 4777 5156 5520 5871
42000 3451 3944 4437 4930 5423 5917 6165
44000 3903 4372 4822 5255 5671 6072 6458
46000 4081 4571 5041 5494 5929 6348 6752
44000 3903 4372 4822 5255 5671 6072 6458
48000 4258 4769 5260 5732 6187 6624 7046
52000 4613 5167 5699 6210 6702 7176 7633
56000 4968 5564 6317 6688 7218 7728 8220
60000 5323 5962 6575 7165 7733 8280 8807
64000 5678 6359 7014 7643 8249 8832 9394
20 MUA-PRC007-EN
Dimensions
Plain View
Front View
Figure 6. Horizontal arrangement single blower
DFIA
Unit Components
1. Inl e t d am per
2. R/A section (before
Burner)
3. V-bank
4. Burner section
5. R/A section (after
burner)
6. Blower section
7. Filter access
8. Adjustable profile
9. Control cabinet
10. Access door (piping
compartment)
11. Gas piping manifold
12. R/A acces
13. Return air damper
14. Belt guard
Table 4. Dimensions for horizontal arrangement—Single blower DFIA
Model A B C D E F H J K L M N P
109 29 45 33 12 10-1/2 16-1/2 30 8-1/4 28 23-3/4 34 25-1/8 34-1/2
112 29 45 33 15-3/4 13-3/8 14-5/8 30 8-1/4 28 23-3/4 34 25-1/8 34-1/2
115 37-1/4 51 43 18-3/4 16 16-1/8 30 14-1/4 43 39-3/4 40 40-1/4 40-1/2
118 37-1/4 51 43 22 19 14-1/2 30 14-1/4 43 39-3/4 40 40-1/4 40-1/2
120 54 60 52 24-7/8 24-7/8 17-9/16 48 14-1/4 52 48-3/4 49 49-1/8 49-1/2
122 54 60 52 27-3/8 27-3/8 16-5/16 48 14-1/4 52 48-3/4 49 49-1/8 49-1/2
125 66 72 60 31-3/8 31-3/8 20-5/16 60 20-1/4 52 48-3/4 61 49-1/8 61-1/2
130 66 72 60 36-7/8 36-7/8 17-9/16 60 20-1/4 52 48-3/4 61 49-1/8 61-1/2
Note: All dimensions in inches subject to manufacturing tolerances.
MUA-PRC007-EN 21
DFIA
Plan View
Front View
Figure 7. Horizontal arrangement twin blowers
Unit Components
1. Inlet damper
2. R/A section (before
Burner)
3. V-bank
4. Burner section
5. R/A section (after burner)
6. Blower section
7. Filter access
8. Adjustable profile
9. Control cabinet
10. Access door (piping
compartment)
11. Gas piping manifold
12. R/A acces
13. Return air damper
14. Belt guard
Table 5. Dimensions for horizontal arrangement—Single blower DFIA
Model A B C D E F G H J K L M N P
215 37-1/4 93 43 18-3/4 16 16-1/8 22-1/2 79 10 43 39-3/4 82 40-1/4 82-1/2
218 37-1/4 93 43 22 19 13-1/4 22-1/2 79 10 43 39-3/4 82 40-1/4 82-1/2
220 54 120 52 24-7/8 24-7/8 20-1/4 29-5/8 96 14-1/4 52 48-3/4 109 49-1/8 109-1/2
222 54 120 52 27-3/8 27-3/8 14-1/2 29-5/8 96 14-1/4 52 48-3/4 109 49-1/8 109-1/2
225 66 144 60 31-3/8 31-3/8 21-3/4 37-5/8 120 20-1/4 52 48-3/4 133 49-1/8 133-3/8
230 66 144 60 36-7/8 36-7/8 18-5/8 33 120 20-1/4 52 48-3/4 133 49-1/8 133-3/8
Note: All dimensions in inches subject to manufacturing tolerances.
22 MUA-PRC007-EN
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