Tjernlund RT1500(H) Rooftop Inducers 8504160 Rev A - Manuel (Page 6)

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INSTALLATION OF ROOFTOP INDUCER
The Rooftop motor side is heavy. Remove (2) hinge pins and (2) latch screws opposite hinge side to separate the motor sec-
tion from the mounting base prior to installation. When removing the motor side, use extreme caution so internal parts such
as the impeller are not damaged.
Make sure vent pipe is adequately installed and supported for weight of inducer. Tjernlund’s optional RT-Series rooftop stands or a
frame to support weight of inducer may be necessary. The vent extending above the roofline may be shortened for a more stable and
aesthetic installation since the Rooftop Inducer provides draft regardless of chimney height.
IMPORTANT: Disconnect the power supply when making wiring connections or when working around the fan impeller and motor.
Failure to do so can result in electrical shock, personal injury, death or property damage.
INDUCER BASE INSTALLATION
All models include mounting kits to securely attach the Inducer Base to any type of insulated
or single wall metal pipe or tile lined flue.
MOUNTING INDUCER BASE ON METAL VENT PIPE
NOTE: Discard adapter plate, finger clamps and 3 1/2” bolts if mounting on metal vent pipe.
A Mounting Plate and Inlet Collar is included with each Rooftop Inducer. The RT750 Series
collar will slip inside any metal pipe as small as 8" diameter ID and as large as 12” OD. The
RT1500 Series collar will slip inside any metal pipe as small as 12" ID and as large as 20” OD.
If your application has a metal pipe smaller than the noted diameters use an increaser appro-
priate for pipe type to transition to minimum diameter noted.
1. Insert Inlet Collar through Mounting Plate. Place Inducer Base on top of Inlet Collar and
Mounting Plate to sandwich Inlet Collar flange between them. Insert (4) 1/2” 10-32 carriage
bolts through Mounting Plate and Inducer Base and tighten (4) 10-32 lock nuts on top of
Inducer Base. Secure (4) Pipe Straps to the holes on the sides of the Inducer Base with
included (4) 3/8” 8-32 screws and lock nuts, (See Diagram A).
2. IMPORTANT: Before inserting Inlet Collar / Inducer Base assembly into vent pipe note that
the electrical connection is on the hinged side of the Inducer. Make sure that the Inducer
Base is positioned so that Inducer swings towards the desired direction. Using RTV or
equivalent high temperature silicone apply a generous bead to the top edge of the metal
vent pipe. Insert Inlet Collar / Inducer Base assembly into vent pipe considering hinge loca-
tion. Insert the large adjustable pipe clamp through the loops of the pipe straps and tighten
pipe clamp until it snugly grips the OD of the vent. NOTE: RT1500 Series will have to use
both pipe clamps provided, (See Diagram B).
DIAGRAM A
DIAGRAM B
INSTALLATION ISOMETRIC FOR
TILE LINED CHIMNEY
INSTALLATION ISOMETRIC FOR
METAL VENT PIPE
INDUCER BASE
INLET COLLAR
MOUNTING PLATE
PIPE STRAPS (4)
PLACE A GENEROUS BEAD OF HIGH TEMP SILICONE
ON TOP OF PIPE BEFORE PLACING INLET COLLAR /
INDUCER BASE ASSEMBLY ON VENT PIPE. INSERT
PIPE CLAMP THROUGH STRAPS AND TIGHTEN.