Tjernlund DJ-3, D-3, HD, I, IL, XL Draft Inducer 8504003 Rev A 07/00 - Manual (Page 6)

ELECTRICAL WIRING
Wiring diagrams are included in these instructions for various draft inducer applications. While it would be impractical to show every
conceivable variation, the ones included will demonstrate sufficient basic techniques for the design and installation of the unusual con-
trol system.
The installer should always check the rated capacity of a burner primary control. If the amperage rating of the load contacts is not equal
to the sum of all burner components plus that of the inducer motor, an additional isolation relay must be installed as shown in some dia-
grams. Draft inducer motor amperage ratings can be found on the “Draft Inducer Selection Table” on bottom of page 2.
The diagrams included show wiring for the standard motors furnished with the inducers. If special voltage motors have been specified,
changes in wiring may be necessary.
Wiring diagrams assume all inducer motors (except Model HD) will have 115 volt service. The Model XL is furnished with 115/230 volt
motors. If 230 volt service is required for this unit, consult factory if necessary, for wiring instructions.
The amperage rating of the PS1505 Fan Prover is 15 amps non-inductive to 277 volts AC.
A Post Purge Relay/Timer (P/N 950-1067) should be installed on Draft Inducers when venting Oil Fired Equipment. This will allow the
venter to run from 1 to 10 minutes after a heating cycle to purge the vent system of any residual flue gases or oil odors. The Relay/Timer
can also be installed on gas installations with extended horizontal vent connectors.
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TYPICAL INSTALLATION
GAS WIRING TO ANY APPLIANCE EQUIPPED WITH 24V CONTROLS
NO POST-PURGE RELAY/TIMER ON DRAFT INDUCER
COMPONENTS NEEDED:
(1) DRAFT INDUCER
(1) PS1505 FAN PROVER
(1) 24/115V RELAY
USE 950-1040 FOR MODELS DJ3 & D3
USE 950-1016 FOR MODELS I, IL, XL