Exhaust & Outside Air Ducts
The Exhaust Air Duct and the Outside Air Duct connect the unit to
the outside. Flexible insulated duct is typically used. See Table
under "Duct Sizes" below.
DO NOT PLACE ANY STALE AIR RETURNS IN GARAGES.
Can an TR be used to ventilate bathrooms?
A S&P TR can be used as a central exhaust system in place of
bathroom exhaust fans. Tie a grill in each bathroom directly
back to the TR – see Schematic (A). A successful installation
should provide at least 50 CFM of exhaust per moisture producing
bathroom. When used for bathroom exhaust, the TR30 should be
used for only one bathroom, the TR200 for up to four bathrooms
and the TR300 for up to six bathrooms. Install a control in
the bathroom ventilated by the TR (see Secondary Operating
Controls, below).
For houses where radon is a concern:
The first line of defense against radon should always be techniques
that prevent the entry of radon into the home, such as under-slab
suction, vented perimeter drainage, and crack sealing. However,
if moderate levels of radon continue to be present, it is important
that the unit slightly pressurize the basement, not de-pressurize
the basement.
Installation of this unit for radon mitigation is beyond the
scope of this manual. Consult a radon mitigation professional.
Duct Sizes
Duct Minimum Sizes and Type
Exhaust Air & Outside Air
(EA & OA)
Fresh Air & Stale Air
(FA & RA)
All ducts from unit to house in unconditioned spaces like
attics and crawl spaces MUST BE INSULATED.
Controls
For an installation in which the TR should run continuously in
order to provide the required ventilation rate for the home,
no controls are needed. However, in most installations, control
over the unit operation is desired and this is best provided by a
Proportional Timer.
A Dehumidistat is another option but works properly only during
the heating season. If the TR uis used during the summer, a
Proportional Timer should also be installed.
Proportional timers (SPTL or SFM controls) may be located
anywhere that is convenient, but Dehumidistats (SHW-20) must
be located in the primary living area. A typical location for
either control is next to the home's thermostat. Proportional
timers operate the TR to provide regular background ventilation
of the home.
TR installations that pull stale air from specific rooms, such as
bathrooms, should have Push-Button Lighted (SPBL) Controls in
those rooms. The secondary operating controls allow the system
to be turned on from various locations in the house.
TR130_200_300
132100_003
6" round insulated duct (8" round
for TR300)
8" round insulated duct may be
used to maintain maximum airflow
6" round or 8" oval rigid
un-insulated
Due to continuing product development, specifications are subject to change without notice.
Mounting the Unit
Unit may be installed in any orientation:
Orient the unit for the simplest duct layout and connections.
Note however that the door is equipped with slide-off hinges. For
the homeowner's convenience it is helpful to orient the unit so
that the door does not drop off when it is unlatched.
Mounting the TR on a concrete foundation wall:
Mount hanging bracket to the wall with appropriate concrete
anchors. Use pre-cut foam tape from small parts bag. Remove
backing and apply two pieces of foam tape equally spaced along
the unit's mounting flange to be held by the hanging bracket. Apply
the other two pieces of foam over two holes that will be used for
fastening, on the other flange. The tape should be applied in a "U"
shape to cushion both the front and back of the integral flanges.
Lift unit and slide unit flange into the hanging bracket. Using metal
flat washers, fasten flange opposite hanging bracket to structure.
Safety screws should similarly be installed passing through the
hanging bracket and flange. Make sure the screws, which you must
supply, are properly selected for the loads and substrate involved.
Mounting the TR to a stud wall:
Mount unit using supplied hanging bracket kit as described for
mounting to concrete foundation wall. Note that the hole layout
on the integral mounting flanges and the hanging bracket are
spaced for 16" or 24" on-center framing patterns.
Metal Washer
Lag Screw or Concrete Anchor
(provided by others)
Unit Flange
Foam Tape
Lag Screw or Concrete Anchor
(provided by others)
Suspending the TR from floor joists or trusses:
The unit may be screwed directly to joists or trusses using the
hanging bracket and integral flange. Mount as described for
mounting to concrete foundation wall. Note that the hole layout
on the hanging bracket is spaced for 16", 19.2" and 24" on-center
layouts.
RISK OF INJURY WHEN LIFTING UNIT AND INSTALLING UNIT
OVERHEAD. GET A HELPER AND WEAR EYE PROTECTION.
Revised 9/2018
Foam Tape
Optional Washer and Screw
(provided by others)
Hanging Bracket
© 2018 S&P
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