Reznor DV Operation Manual (for units built before August 2003) - Manual (Page 9)

Form O-DV/RDF/ADF, P/N 148385, Page 8
FIGURE 9 - Control
Identification and Typical
Locations (Model DV is
shown as an example)
Control
Relays
Outside Air Cutoff
(high ambient limit control)
Time Delay
Relay 24-volt Terminals
Ignition
Module
Maxitrol Amplifier
or Signal Conditioner Service
Switches
Status Lights
Circuit
Board 24-V
olt
Terminals
Bypass
Damper
Motor
Return
Air
Damper
Motor
Motor
Starter
Transformer
Line Voltage
Terminals
Starter
Relay
Relay for
Optional 2-Speed
High Low
Standard Pressure
Switches
Optional Dirty Filter
Pressure Switch
NOTE: Wiring diagrams for the unit are located on the inside of the electrical box door.
OPERATION/
SERVICE SECTION
Controls - Location,
Operation, and
Service
To service this system, it is necessary to understand the normal operation of
the controls and the function of the diagnostic circuit board. Refer to the elec-
trical box drawing in FIGURE 9 and to the individual illustrations to identify
and locate each of the controls. The wiring diagrams for this unit are located in
the main electrical box.
WARNING: Service work on this system should only be done by
a qualified gas service person. The service information and the
troubleshooting guides are intended as an aid to a qualified service
person.
FIGURE 10 - Diagnostic
Circuit Board, P/N 151263
Column of 13 indicator
bulbs; always replace
burned out bulbs, P/N
125189.
8. Electronic Circuit
Board with Lights
Location: Control Compartment Electrical Box (See FIGURE 9)
Function: The diagnostic lights on the circuit board are designed to assist in
troubleshooting. When the system is operating properly, the lights on the cir-
cuit board are lit. If the system fails to operate properly, all lights on the circuit
board up to that one that represents the component or system that has failed
will be lit. For more detailed information, refer to the Troubleshooting Guide
in Paragraph 19.
Control Circuit Power
Control Switch Energized
Firestat Normal
Freezestat Normal
Starter Energized
Blower ON - Low Air Pressure Normal
Blower ON - High Air Pressure Normal
Manual and Auto Limits
Normal
Outside Air Cutoff Normal
Low Gas Pressure Normal
High Gas Pressure Normal
Pilot Valve Energized
Gas Safety Valve Energized