Form I-UDB, P/N 202658 R14, Page 43
A
Abnormal Heat Cycle Functions 30
Adjusting Blower Speed 18
Aircraft Hangars 3
APPENDIX 42
B
Belt 18
Belt Drive 19
Belt Guard in Option AZ6 and CD10 20
Blower 18
Blower Guard in Options AZ6, AZ7,
CD10, and CD12 20
Clean the Burner 36
Burner Maintenance 36
Burner Orifice 37
Burner Removal 36
C
California Warning Label 3
Certification 2
Checking Gas Flow Shutoff 39
Check installation after startup 33
Check the installation prior to startup
32
Check the Lights 40
Chlorine 6
Circuit Board (DSI Integrated Control
Module) 21
Clearances 8
LED Codes 29, 40
Combustion Air 16, 17
Combustion Air Pressure Switch 39
Combustion Air Proving (Pressure)
Switch 26
Commissioning 32
Confined Space 16
Contact 44
Continuous Blower Operation 31
Control Wiring 21
D
DDC Controls 28
Dimensions 9
Direct Drive 19
Disconnect Switch 39
Door Switch 39
Door Switch - Model UDBS only 26
Downturn Nozzle Kits 8
Drive 18
DSI Integrated Control Module 29, 37,
40
Duct Flange 17
E
Electrical Supply 20
F
Continuous Fan Operation 31
Fan/Blower Off Delay 30
Fan/Blower On Delay 29
Fault Modes 31
Flame Sensor 38
fuse 37
G
Garages 3
Gas Connection Size 13
Gas Conversion Kits 13
Gas Supply 12
Gas Supply Line 13
Gas Valve 27, 38
Gas Valve ON/OFF Control Knob 33
Gas Valve Relay Fault 31
Guards 20
H
Hanging the Heater 11, 12
Hard Lockout 31
HAZARD INTENSITY LEVELS 2
Hazard Labels and Notices 2
Lower Portion of the Heat Exchanger
37
Heat Exchanger Maintenance 35
High Altitude Capacity 15
High Altitude Derate 14
High Altitude Kit 7, 8
I
Ignition System 29, 37, 38
Ignition Trial 29
Ignitor 37
Installation Codes 3
L
Leak-test 12
Lifting 11
LED lights 29
Limit Control 26, 39
Limit Switch 30
Literature Bag 34
Location 6
Unit Heater Location 4
Location of Controls 35
Lockout 31
optional vertical louvers 7
M
Maintenance Procedures 35
Maintenance Schedule 34
Massachusetts Requirement 3
Blower Motor 27
Motor 38
Venter Motor 38
Multiple Heater Control 27
N
Normal Heat Cycle 29, 30
O
Operation 32
Option AX4 17
Option CC1 7
Option CC2 or CC6 3, 7
Option CD 2, 3, or 4 8
Option CL31 27
Option CL32 27
Option CM3 27
Option DJ20 or DJ21 7
Options D10 and D14 28
Orifice Pressure 13
P
Polytube Adapter 17
Post Purge 30
Power Interruption 31
Preparing for Installation 7
Prepurge 29
Pressure Switch 30
Pressure Switch Settings 26
PRESSURE TESTING SUPPLY PIPING
12
S
Mounting the Sensor 28
Soft Lockout 31
Sound Data 5
Spark Gap 38
Startup 32
stepdown transformer 7
stepdown transformer, Option CG2 or
CG4 20
Supply Wiring 20
Suspending 11
Suspending the Heater with Threaded
Rods 11
suspension points 9, 10
Swivel Connectors 12
T
TECHNICAL DATA 42
Terminal Strip for 24-volt 21
Thermostat 27
Unit Mounted Thermostat 27
Throw 4
Transformer 39
500VA Stepdown Transformer 20
Troubleshooting 40, 41
Troubleshooting Flowchart 40
TURN OFF GAS 33
U
Uncrating and Inspecting 6
Undesired Flame 31
V
Valve Outlet Pressure 14
Valve Outlet Pressure Settings by
Elevation 14
Vent 39
Vent/Combustion Air 39
Vent/Combustion Air Kit 3, 7
vent cap 7
Venter Motor 27
Venter Wheel 38
Venting Manual 3, 6
Vent System Testing Procedure 33
460 or 575 supply voltage 20
W
Warranty 3
Weights 11
WHAT TO DO IF YOU SMELL GAS 32
Wiring Connections 21
Wiring Diagram for Model UDBP or
UDBS, Sizes 150-400, Single Stage
24
Wiring Diagram for Model UDBP or
UDBS, Sizes 150-400, Two Stage 25
Wiring Diagram for Model UDBP or
UDBS, Sizes 30-125, Two Stage 23
Wiring Diagram for Model UDBP or
UDBS Sizes 30-125, Single Stage 22
Wiring Diagrams 22
INDEX
