Tjernlund HS-3,4,5 (Discontinued Version - Pre UC1 Universal Control) 8504031 Rev A 09/99 - Manual (Page 5)

POWER VENTER MOUNTING
The installer must supply plumber’s strap or 1/4” threaded rod with nuts and washers for mounting. The Power Venter may be mount-
ed in any position as long as the shaft of the motor remains horizontal. The Power Venter housing is single wall, 6 inches must be
maintained from all combustible materials. It is recommended that the Power Venter be mounted as close as possible to the point of
termination.
VENT PIPE INSTALLATION
If Installing the Power Venter on an appliance not equipped with a draft hood or draft diverter (e.g. Power Burners, Induced Draft), a
barometric draft control must be added. The barometric draft control must be the same size as the flue outlet and installed as close
as possible to the appliance. After the draft hood, draft diverter or barometric draft control, a tapered reducer should be installed to
reduce the flue to the size shown in the selection table on page 2 of these instructions. After the tapered reducer, install the appropri-
ate type of vent pipe to the inlet of the Power Venter. The vent pipe chosen must be in compliance with local codes. The Power
Venter inlet and outlet are designed to accept single wall vent pipe. If using vent pipe other than single wall, the installer must supply
adapters to connect to the Power Venter. While it is recommended that the Power Venter be mounted at the point of termination, it is
acceptable to install vent pipe between the outlet of the Power Venter and the point of termination. The Installer must seal all vent
pipe connections after the Power Venter with high-temperature caulk or aluminum vent pipe tape to prevent flue gas leakage during
operation. The size of the vent pipe between the Power Venter and point of termination should be the same size shown on the selec-
tion table. Support the vent pipe as recommended by it’s manufacturer. Examples of proper vent pipe installation are shown below.
IMPORTANT: Elbows placed directly after discharge on Power Venter may cause erratic operation of Fan Prover. If elbows are
necessary on discharge, allow for a straight section of pipe 3 times the vent diameter being used before installing an elbow.
HS-3 HS-4, HS-5
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