thermastor Quiet-Vent Ventilation System User manual

QUIET-VENT
QUIET-VENT
For small usage:
P.O. Box 8680 Madison, WI 53708 •TOLL-FREE 1-800-533-7533 •www.thermastor.com •[e-mail]
TS-174B
INSTALLER’S & OWNER’S MANUAL
HVAC INSTALLER: PLEASE LEAVE MANUAL FOR HOMEOWNER
P/N 4019663 • Serial No.________________________ Install Date:___________
Sold by:

Table of Contents
1. Specications .............................................................1
2. Installation ..................................................................1
2.1 Back-Drafting Open Combustion Devices ..............1
2.2 Location of the Ultra-Aire Quiet Vent ......................2
2.3 Fresh Air Inlets ......................................................3
2.4 Hanging the Ultra-Aire Quiet Vent ..........................3
2.5 Ducting to and from the Ultra-Aire Quiet Vent ........3
2.6 Wiring the Ultra-Aire Quiet Vent .............................3
3. Operation ....................................................................4
3.1 Using the Timers ...................................................4
3.2 Adjusting the Amount of Ventilation .......................4
4. Maintenance ...............................................................4
4.1 Cleaning the Blower Screen ..................................4
5. Service .......................................................................4
5.1 Circuit Breaker Trips ..............................................4
5.2 Blower Operates on One Speed Only .....................5
5.3 7-Day Timer Does Not Advance .............................5
5.4 Fan Motor .............................................................5
5.5 Warranty ...............................................................5
6. Service Parts List ........................................................5
7. Warranty .....................................................................6
Read and Save These Instructions
WARNING! — This symbol indicates important
instructions. Failure to heed them can result in serious
injury or death.
CAUTION! — This symbol indicates important
instructions. Failure to heed them can result in injury or
material property damage.
1. Specifications
Model: Ultra-Aire Quiet Vent
Part Number: 4019663
Electrical Specs: 110-120Vac, 60Hz, 1ph
Max HACR Type
Circuit Breaker or Fuse: 10A
Blower: 0.65 Amps, Thermally Protected
Capacitor: 370 VAC, 6 MFD
2. Installation
WARNING: To reduce the risk of fire,
electric shock, or injury to persons, observe
the following:
A. Installation work and electrical wiring must be done by
qualied person(s) in accordance with all applicable
codes and standards, including re-rated construction.
B. Sufcient air is needed for proper combustion and
exhausting of gases through the ue (chimney) of fuel
burning equipment to prevent backdrafting. Follow the
heating equipment manufacturer’s guideline and safety
standards such as those published by the National Fire
Protection Association (NFPA), and the American Society
for Heating, Refrigeration and Air Conditioning Engineers
(ASHRAE), and the local code authorities.
C. When cutting or drilling into wall or ceiling, do not
damage electrical wiring and other hidden utilities.
D. Ducted fans must always be vented to the outdoors.
E. If this unit is to be installed over a tub or shower, it must
be marked as appropriate for the application.
F. NEVER place a switch where it can be reached from a tub
or shower.
2.1 Back-Drafting Open Combustion Devices
CAUTION: Do not use open combustion
heating appliances (unless equipped with
power exhaust) in a home equipped with
exhaust fans (i.e., bath fans, kitchen hoods,
down draft stoves, or the Ultra-Aire Quiet
TABLE OF CONTENTS
2Ultra-Aire Quiet Vent Installer’s & Owner’s Manual

Vent System).
Under certain conditions, these fans may cause the
backdrafting of toxic combustion by-products that are
hazardous to human health and could cause death.
Therefore, we strongly recommend using only closed
combustion (direct-vent or aerodynamically decoupled)
heating appliances in weather tight homes. Most furnaces,
replaces and water heaters are now available with sealed
combustion or power exhaust.
2.2 Location of the Ultra-Aire Quiet Vent
Ideally each bathroom and the kitchen are ducted with a
4" duct to the Ultra-Aire Quiet Vent (See Fig. 1). To make
installation easy, the Ultra-Aire Quiet Vent has one 6" and
three 4" duct inlet Connections. The 6" outlet of the Ultra-Aire
Quiet Vent is ducted to the outside of the home. The Ultra-
Aire Quiet Vent should be positioned in the home to minimize
the amount of duct and wire required for installation. The
unit should be mounted and oriented to allow cleaning of the
internal blower screen via the side mounted clean-out port,
and adjustment of the 7-day timer (the timer can be remote
mounted away from the Ultra-Aire Quiet Vent (see paragraph
F). In cold climates the unit should be located in a heated
space to prevent condensation from forming inside the
cabinet. A basement or utility room is an ideal location.
If the Ultra-Aire Quiet Vent and its ducting must be located in
a unheated space in a cold climate, they must be insulated to
prevent condensation from forming in the system.
If the Ultra-Aire Quiet Vent is used to correct a moisture
problem in an existing house, a 6" duct should be run from
near the ceiling in the center of the house to the Ultra-Aire
Quiet Vent (see Fig. 1). This will provide adequate ventilation.
2.3 Fresh Air Inlets
The “FRESH 80" fresh air inlets are recommended to
provide fresh air to the bedrooms and prevent excessive
depressurization. These fresh air inlets should be located
on an exterior wall near the ceiling in any isolated rooms
that are occupied for extended periods of time with the door
closed. These vents have an adjustable opening, a lter
and a shut off valve. One air inlet is recommended in each
SAFETY PRECAUTIONS
3Ultra-Aire Quiet Vent Installer’s & Owner’s Manual
14.5"
13.125"
24 hour timer
11" Hanger Straps
(4 supplied)
Electrical
Box Cover
Oil Port
13.5"
6"
Outlet
6"
Inlet
4"
Inlet
4"
Inlet
4"
Inlet
Figure 1

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 exible 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, atten 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 exible 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
exible 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
4Ultra-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

activate the high speed of the exhaust fan. These controls
are to be UL listed with minimum electrical ratings of 2 amps
inductive load at 125 VAC.
The prewired 7 day timer located on the Ultra-Aire Quiet Vent
activates the low speed of the exhaust fan. The timer can be
mounted remote from the Ultra-Aire Quiet Vent. This requires
a double gang electrical box and 3 conductors plus ground
to extend connections to the timer from the Ultra-Aire Quiet
Vent.
A 4" junction box cover is used to cover the timer opening on
the Ultra-Aire Quiet Vent.
WARNING: To reduce the risk of fire,
electric shock, or injury to persons, observe
the following:
A. Use this unit only in the manner intended
by the manufacturer. If you have questions,
contact the manufacturer.
B. Before servicing or cleaning unit, switch
power off at service panel and lock service
disconnecting means to prevent power from
being switched on accidentally. When the
service disconnecting means cannot be
locked, securely fasten a prominent warning
device, such as a tag, to the service panel.
CAUTION: For general ventilating use
only. Do not use to exhaust hazardous or
explosive materials and vapors.
3. Operation
3.1 Using the Timers
1. Setting The 7-Day Timer
Rotate the timer dial until the white pointer indicates the
correct time of day. Each segment moved toward the
dial center represents 2 hours of low speed exhaust fan
operation. Typically, the timer is set to operate during the
time of occupancy. If additional ventilation is required to
control moisture and odors, additional spades can be moved
in. If the home becomes too dry, decrease the hours of low
speed operation.
3.2. Using Remote Timers
Estimate the ventilation time required and set it on the timer.
Activate the timer whenever moisture or odors are generated
in the room. If timers are not available locally, they may be
ordered with the Ultra-Aire Quiet Vent.
3.2 Adjusting the Amount of Ventilation
The amount of air removed from the home depends on the
restrictions in the duct system and the amount of time the
system operates. If more or less ventilation is required the
7-day timer can be set for more or less low speed operation.
The air ow can be reduced by installing a duct damper in
the exhaust duct of the Ultra-Aire Quiet Vent.
By partially closing the damper, the CFM of stale air removed
from the house can be reduced. Figure 4 indicates air ow
and power consumption versus static duct pressure.
4. Maintenance
4.1 Cleaning the Blower Screen
WARNING: Disconnect the appliance from the power
supply before cleaning the blower screen.
A coarse screen covers the blower inlet port located inside
the Ultra-Aire Quiet Vent cabinet. Vacuuming the screen is
recommended every six months. Remove the 4" x 4" cover
on the side of the Ultra-Aire Quiet Vent cabinet for access
(See Fig. 1).
5 Service
CAUTION: Requires a qualified service
person because electrical shock hazard is
present.
5.1 Circuit Breaker Trips
Check For Short In Wiring:
FOR HVAC INSTALLER ONLY
5Ultra-Aire Quiet Vent Installer’s & Owner’s Manual
0
50
100
150
200
250
300
350
.1 .2 .3 .4 .5 .6 .7 .8 .9
Air Flows And Watts At Various Pressures
CF HIGH SPEED
WATTS HIGH SPEED
WATTS LOW SPEED
CF LOW SPEED

Turn off the 7-day timer by moving all the spades out. Turn
off all the remote timers and the dehumidistat (if used). If the
circuit breaker trips, locate a short in the wiring. If the circuit
breaker does not trip, activate the 7-day timer. If the circuit
breaker then trips, check the blower motor.
5.2 Blower Operates on One Speed Only
Operates On Low Speed Only:
If the blower operates only on low speed, deactivate the
7-day timer so that unit is not running. Activate one of the
optional controls and then check for voltage to the relay coil
(terminals 7 and 8). See Figure 3. If voltage is not present,
check for a loose wire or a defective optional control. If
voltage is present, check for voltage between relay terminal
4 and ground. If there is no voltage, the relay is defective. If
there is voltage at terminal 4 and the motor does not operate,
the high speed winding of the blower motor is defective.
Replace the blower.
Operates On High Speed Only:
High speed operation of the blower has priority over low
speed. Verify that all the optional controls are in the off
position. If the blower operates on high speed constantly,
check for voltage between relay terminals 7 and 8. If voltage
is present, one of the optional controls is not opening and is
defective.
If the blower operates only on high speed (when the optional
controls are activated) and is off the rest of the time, check
that the segments on the 7-day timer are moved to the
center of the dial, thus calling for low speed ventilation. If the
blower does not run with the segments in and the optional
controls off, check for voltage between timer terminal 5
and ground. If terminal 5 does not have voltage, the timer is
defective. If terminal 5 has voltage and relay terminal 5 does
not have voltage, the relay is defective. If relay terminal 5
has voltage, the low speed winding of the blower motor is
defective.
5.3 7-Day Timer Does Not Advance
Check for voltage between timer terminals 1 and 2. If voltage
is present and the timer does not advance, the timer motor is
defective and the timer must be replaced.
5.4 Fan Motor
If the blower motor fails to operate when voltage is present
at its leads, the motor is defective and the blower must be
replaced.
5.5 Warranty
The Ultra-Aire Quiet Vent is guaranteed for two years from
the date of installation against all manufacturing defects
provided the Ultra-Aire Quiet Vent has been installed,
operated, and maintained as stated in this manual. This
warranty is limited to the repair or replacement of the
equipment, F.O.B. MADISON, WI. Call the factory at 1-800-
533-7533.
6. Service Parts
Item Part Number Qty. Description
1 4026929 1 Blower, w/Capacitor, 115V
2 4019782 4 Mounting Strap, Rubber
3 4019649 1 Relay, DPDT, 120V, 10A
4 4019648 1 Timer, 7-Day
(Diehl TA-4073, Model 880)
5 4019641 1 Wire Harness, L1
6 4019642 1 Wire Harness, L2
7 4019643 1 Wire Harness, Blue
8 4019644 1 Wire Assembly, Red
9 4019645 1 Wire Assembly, Green
10 4019654 1 Wiring Diagram
FOR HVAC INSTALLER ONLY

Limited Warranty
17 Ultra-Aire Quiet Vent Installer’s & Owner’s Manual
Warrantor:
Therma-Stor LLC
PO Box 8680
Madison, WI 53708
Telephone: [phone]
Who Is Covered: This warranty extends only to the original residential end-user of the Ultra-Aire Quiet Vent
Ventilating System, and may not be assigned or transferred.
Warranty: Therma-Stor LLC warrants that, for two (2) years from the date of installation, the Ultra-Aire
Quiet Vent Ventilating System will operate free from any defects in materials and workmanship, provided the
Ultra-Aire Quiet Vent has been installed, operated, and maintained as stated in the installation and operation
manual. This warranty is limited to the repair or replacement of the equipment F.O.B. Madison, WI. Call the
factory at 1-800-533-7533.
Limitation and Exclusions: If any Ultra-Aire Quiet Vent Ventilating System part is repaired or replaced, the
new part shall be warranted for only the remainder of the original warranty period applicable thereto (but all
warranty periods will be extended by the period of time, if any, that the Ultra-Aire Quiet Vent is out of service
while awaiting covered warranty service).
UPON THE EXPIRATION OF THE WRITTEN WARRANTY APPLICABLE TO THE Ultra-Aire Quiet Vent
VENTILATING SYSTEM OR ANY PART THEREOF, ALL OTHER WARRANTIES IMPLIED BY LAW,
INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, SHALL ALSO EXPIRE. ALL
WARRANTIES MADE BY THERMA-STOR LLC ARE SET FORTH HEREIN, AND NO CLAIM MAY BE MADE
AGAINST THERMA-STOR LLC BASED ON ANY ORAL WARRANTY. IN NO EVENT SHALL THERMA-STOR
LLC, IN CONNECTION WITH THE SALE, INSTALLATION, USE, REPAIR OR REPLACEMENT OF ANY Ultra-
Aire Quiet Vent VENTILATING SYSTEM OR PART THEREOF BE LIABLE UNDER ANY LEGAL THEORY FOR
ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES (THE END-USER SHOULD TAKE PRECAUTIONS
AGAINST SAME), OR LOSS OF USE OR DAMAGE TO ANY REAL OR PERSONAL PROPERTY.
Some states do not allow limitations on how long an implied warranty lasts, and some do not allow the
exclusion or limitation of incidental or consequential damages, so one or both of these limitation may not
apply to you.
Legal Rights: This warranty gives you specic legal rights, and you may also have other rights which vary
from state to state.
QUIET-VENT
QUIET-VENT

Information in this document is subject to change without notice. No part of
this document may be reproduced or transmitted in any form or by any means,
electronic or mechanical, for any purpose, without the express written permission
of Therma-Stor LLC. © 2008 Therma-Stor LLC. All rights reserved.
PO Box 8680 • Madison, WI 53708
Phone: [phone] • Fax: [phone]
Web: www.thermastor.com • Email: [e-mail]
Ultra-Aire Quiet Vent Installer’s & Owner’s Manual