Therma-Stor Products Group Quiet-Vent Ventilation System - Manual (Page 4)

bedroom.
2.4 Hanging the Ultra-Aire Quiet Vent
The Ultra-Aire Quiet Vent has four vibration absorbing straps
for hanging from joists, rafters, or trusses and use (4) 1/4"
diameter lag bolts or the equivalent. Locate the unit to
minimize the ducting from the baths and kitchen to the Ultra-
Aire Quiet Vent inlets and from the Ultra-Aire Quiet Vent outlet
to the outside.
2.5 Ducting to and from the Ultra-Aire Quiet
Vent
All flexible ducting connected to the unit should be UL listed.
The preferred method of ducting the exhaust air from the
rooms is to use 4" round duct from 4" x 6" register heads
located in the wall cavities or the ceiling. For routing through
3.5" stud cavities, flatten the 4" round duct to 3.25". If a
4" duct length from a full bath or kitchen exceeds 50’, two
4" ducts or a 6" duct is recommended. The 4" duct can be
either metal or flexible and can be routed to the Ultra-Aire
Quiet Vent 4" inlet or manifolded to a 6" duct. If more than
four 4" ducts are connected to the Ultra-Aire Quiet Vent, use
a 6" manifold on the Ultra-Aire Quiet Vent’s 6" inlet.
DO NOT locate the register head connecting the kitchen
duct to the Ultra-Aire Quiet Vent in the area designated in
Fig. 2.
To exhaust the stale air, connect a six inch insulated
flexible duct from the outlet of the Ultra-Aire Quiet Vent to a
dampered six inch wall cap. If the length of the exhaust duct
exceeds 50 ft., an 8" duct should be used. All the ducts must
be insulated when they are located in non-heated space in
a cold climate. Flexible duct can be spliced by threading the
ends of the ducts into each other 3 turns. To reduce leakage,
all the duct couplings should be taped with 3 turns of duct
tape. Several ducting alternatives are illustrated in Fig. 1.
2.6 Wiring the Ultra-Aire Quiet Vent
NOTE: All electrical connections must be installed by a qualified
electrician. All wiring must conform to the local electric codes
and/or the National Electrical Code.
Ultra-Aire Quiet Vent uses a 115 volt, 10 amp circuit which
is connected to the black and white wires in the electrical
cabinet (see Fig. 3). Spring wound one hour remote timers
or humidity controllers located in the baths and kitchen are
wired in parallel to the two blue wires. These remote controls
FOR HVAC INSTALLER ONLY
4 Ultra-Aire Quiet Vent Installer’s & Owner’s Manual
Timer Switch
Ground
Timer Switch
Ground
Circuit to Next Timer
In Bath or Kitchen
115 Volt Circuit/Ground
From Quiet Vent to Bath or Kitchen
10-15 Amp 115 Volt
Circuit With Ground
From Main Electrical
Service
Cooking Area
Do Not Install Above or Inside
This Area
Cooking
Equipment
45° 45°
Floor