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DFIA
Trane DFIA User Manual
94 pages
Manual
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Installation Oper
ation
Maint
enance
Febr
uary 2007
MU
A
-S
VX0
1A
-EN
DFIA
DFO
A
Dir
ect-Fir
ed Mak
e-Up
Air Units
2
Table of Contents
Default Chapter
2
Table of Contents
2
Overview of Manual
5
Hazard Identification
5
Model Number
5
General
6
Model Numbers
8
DFIA Model Number Descriptions
8
DFOA Model Number Description
12
General Information
17
Horizontal Configurations
17
Vertical Configurations
18
(DFOA Only)
18
Vertical Configurations
19
(DFIA Only)
19
Pre-Installation Check List
21
Weights and Clearances
23
DFIA Only
23
DFOA Only
24
Rigging/ Suspension
25
Installation
28
Pre-Installation Verification
28
For Canadian Installations
28
Handling the Equipment
28
Locating the Unit
29
Outdoor, Curb Mounting
29
Roof Support
29
Roof Curb Installation
30
Installation Procedure
30
Inlet Hood Support (by Others)
31
Location of Accessories
38
Electrical Connections
38
Field Piping
39
Field Wiring and Remote Control Installation
40
Locating Temperature Controls
40
Pre-Start-Up Check List
42
Inspection
42
Start-Up
44
General Start-Up
44
Unit Start: Systems with Pilot
44
Honeywell™ Flame Safeguard Control
45
Setting Main Flame
45
Unit Shutdown
46
Electrical Requirements
48
To Calcuate the Unit FLA and MCA for
48
Pre-Installation Check List
49
Receiving Instructions
49
Installer's Responsibility
49
Pre-Installation Instructions
49
Sequence of Operation
50
Summer Operation
50
Winter Operation
50
Maintenance
51
Maintenance Schedule
51
Lubrication Requirements
53
Pillow Block Bearings
53
Frequency of Lubrication
54
Dampers
54
Air Filters
54
Belt Tensions and Adjustments
55
Suggested Belt Tension Method
55
Optional Coils and Related Items
56
Condensate (Drain) Pan
56
Gaskets
56
Annual Maintenance
56
Heater
57
Inspection and Maintenance of Gas Ports
58
Burner Operating Principles
59
Valve Adjustments
61
Trouble Shooting
63
Modulating Discharge Temperature (MDT) Controls
63
Connection of MRT Controls
64
Operation
71
Initiate
71
Standby
71
Normal Start-Up Prepurge
71
Ignition Trials
72
Run
72
Settings and Adjustments
74
Operation of the Direct Spark Ignition Control Gas Valve
75
Two Stage Valve
75
Check Safety Shutdown Performance
76
Warranty
91
Warranty Information
91
Standard Warranty
91
Extended Warranty
91
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Trane DFIA Specifications
General
Refrigerant
R-410A
Voltage
208/230V
Stages
Single Stage
Cooling Capacity
1.5 - 5 Ton
Warranty
10-Year Limited Warranty on Compressor and Parts
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