aldes ZRT-SDIL Manual
READ AND SAVE THESE INSTRUCTIONS
AIRFLOW & ZONE CONTROL IOM
*U.S. Pat. No. 9,759,442
Description
ALDES pending* In-Line Zone Terminals
(ZRT-SDIL) and High-Pressure In-Line Zone
Terminals (ZRT-SDIL-HP) are designed to introduce
exibility and dynamic control to central ventilation
systems. Used in both large and small systems, the
ZRT-SDIL/ZRT-SDIL-HP controls ventilation where
it is required without the need for individual fans.
Each ZRT-SDIL/ZRT-SDIL-HP is a combination control
damper and constant airow regulators. This unique
combination provides the ability to select between
low-ow and high-ow ventilation rates without the
need for expensive pneumatic, electronic, or DDC
control systems.
The ZRT-SDIL/ZRT-SDIL-HP can be used in a supply
or exhaust conguration. For ZRT-SDIL models,
operating range is 0.12 to 1.2 in. w.g. (30 to 300 Pa). For
ZRT-SDIL-HP models, the operating range is 0.4 to 2.8
in. w.g. (100 to 650 Pa).
The ZRT-SDIL/ZRT-SDIL-HP allows for a selection
between a continuous, regulated low airow rate
(damper closed) or an on-demand, regulated high
airow rate (damper opened). With a motorized
damper unpowered (closed) a low-continuous
amount of regulated airow passes through the
low-ow constantc airow regulator. When power is
applied to a motorized damper, the damper opens,
and air passes through the low-ow constant airow
regulator as well as the constant airow regulator in
the powered damper.
Mounting
The ZRT-SDIL/ZRT-SDIL-HP is intended to be installed
in-line in a duct system. The unit should be installed in a
location that provides access to the motorized damper.
Wiring
ZRT-SDIL/ZRT-SDIL-HP wiring needs to meet all applicable electrical
and building codes. If the electrical connection to the damper
motor wiring box is not accessible after mounting, there needs to
be enough slack (approximately 24”) in the electrical wiring leading
to the wiring box to allow the damper assembly to be removed
through the access opening. This will allow access to the electrical
connections from the access opening.
ZRT-SDIL/ZRT-SDIL-HP models are available with 24 VAC or 120 VAC
motorized dampers (see Figure 1 and 2 on the next page).
Maintenance
All motorized components of the ZRT-PDIL/ZRT-PDIL-HP are accessible
from the outside of the motorized damper.
ZRT-SDIL / ZRT-SDIL-HP
IN-LINE ZONE TERMINAL
WARRANTY
3 YEARS
DIMENSIONS
MODEL ØA B
ZRT-SDIL-1-4 4" (100 mm) 12" (300 mm)
ZRT-SDIL-1-5 5" (125 mm) 12" (300 mm)
ZRT-SDIL-1-6 6" (150 mm) 12" (300 mm)
ZRT-SDIL-1-8 8" (200 mm) 14" (355 mm)
3-1/4"
ØA
B
4-5/8"
Page 2 | ZRT-SDIL / ZRT-SDIL-HP IOM
Warning
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY
TO PERSONS, OBSERVE THE FOLLOWING:
1. Usethisunitonlyin the mannerintendedbythemanufacturer.
If you have any questions, contact the manufacturer.
2. Beforeservicingorcleaningtheunit,switchpoweroatservice
panel and lock service panel to prevent power from being
switched on accidentally. When the service disconnecting
meanscannotbe locked,securelyfastenaprominentwarning
device, such as a tag, to the service panel.
3. Sucient air is needed for proper combustion and exhausting
of gases through the flue (chimney) of fuel-burning
equipment to prevent backdrafting. Follow the heating
equipment manufacturer’s guidelines and safety standards,
such as those published by the National Fire Protection
Association (NFPA), and the American Society of Heating,
Refrigerating and Air-Conditioning Engineers (ASHRAE), and
the local code authorities.
4. In addition to the following manufacturer’s instructions, it is
necessary to comply with federal, state, and local government
codes. Your purchase of this ALDES ventilation system
represents an investment in the health and comfort of the
occupants, as well as an investment in the protection of
the building from the damaging eects of excessive indoor
humidity.
5. Installation work and electrical wiring must be done by
qualied person(s) in accordance with all applicable codes
and standards, including re-rated construction.
6. When cutting or drilling into wall or ceiling, do not damage
electrical wiring and hidden utilities.
Caution
1. For general ventilating use only. Do not use to exhaust
hazardous or explosive materials and vapors.
2. Automatically operated device. To reduce the risk of injury,
disconnect from power supply before servicing.
System Design
Satisfactory performance of a central ventilation system requires:
• Proper integration of all the components, compatible grilles,
and wall/roof caps;
• Proper duct design for friction losses;
• Consideration of acoustic and vibration properties of the fan
and its mounting;
• Acoustic properties of the grilles;
• Consideration of the mode of operation, whether continuous
or automatically controlled by dehumidistat, timer, or
occupancy sensor;
• Installation in a heatedor unheatedspace,with consideration
forthepotentialofcondensationintheductingorfanhousing.
Inspect the carton upon receipt to ensure the terminal has not
been damaged in transit. If damaged, it is the responsibility of
the recipient to le a damage claim with the carrier. ALDES is not
responsible for damage incurred during shipment.
Note: Prior to installation, inspect the terminal to ensure that
damper(s) move freely and that the constant airow regulators
have not shifted during handling. Handle the unit with care to
prevent damage to the housing and other components. Store the
unit indoors if possible. If outdoor storage is required, protection
against moisture and dirt is necessary.
©2020 American ALDES Ventilation Corporation and ©2020 ALDES Canada. ZRT-SDIL / ZRT-SDIL-HP_IOM_0421. Aldes reserves the right to modify its products at any time to introduce new technologies.
For more information, contact your Aldes sales advisor, visit aldes-na.com, call 1.800.255.7749, or find us on
FIGURE 1 FIGURE 2
ZRT-SDIL
120 VAC WIRING
GNL
BLACK
BLACK or
WHITE
120 VAC
INPUT
DAMPER
MOTOR
ZRT-SDIL
24 VAC WIRING
BLACK
BLACK
24 VAC
INPUT
DAMPER
MOTOR
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CAR3
Constant Airflow Regulator
Installation Operation Maintenance
EN
2
1. AIRFLOW SETTING
Airow rate can be set or adjusted by rotating the dial from either side. The airow indicator will move
to show the selected CFM. The airow label has multiple dened setpoints, but the unique adjustment
mechanism of the CAR3 allows for innite adjustability between the minimum and maximum limits.
Performance charts found in the specications sheet reect this data, with the available range (shaded)
and marked setpoints (lines). The CAR3 will maintain the airow accurately to within +/- 10% of the
indicated lines below for each marked setpoint. At the higher airow rates, the minimum pressure
required to achieve the selected airow may exceed 0.12 in. w.g.
Each diameter has a unique range for both low- and high-pressure variants. The CAR3-L (low-pressure)
is designed for systems with pressures between 0.12 and 1.2 in. w.g. (30 to 300 Pa), and CAR3-H (high-
pressure) between 0.4 and 2.8 in. w.g. (100 to 700 Pa). Factory calibration of the CAR3 is available on
request. Blue color dial = Low-Pressure / Green color dial = High-Pressure.
ADJUSTMENT DIAL
AIRFLOW INDICATOR
2. DIMENSIONS
Ø B A
Size A Ø B
Low-Pressure (Blue)
0.12-1.2 in. w.g
(30-300 Pa)
High-Pressure (Green)
0.4-2.8 in. w.g
(100-700 Pa)
Airow P/N Airow P/N
4'' (100 mm) 3’’ 4.3’’ 15-85 CAR3L4R4 30-160 CAR3H4R4
5'' (125 mm) 3.8’’ 5.2’’ 35-180 CAR3L5R5 55-260 CAR3H5R5
6'' (150 mm) 4.6” 6.0’’ 45-260 CAR3L6R6 60-370 CAR3H6R6
8’’ (200 mm) 6” 7.6” 70-490 CAR3L8R8 100-660 CAR3H8R8
10’’ (250 mm) 7.4” 9.5” 110-620 CAR3L10R10 170-900 CAR3H10R10
3
3. INSTALLATION
Rigid Duct
or Register
Box
CAR3
Duct Collar
DL ≥ 1.2 D
Flex Duct
Flex Duct
CAR3
Duct Collar
or Grille
D
L ≥ 1.2 D
Duct Collar
The CAR3 should be installed in accordance with all applicable building and mechanical codes. If
installed in a metal duct or duct collar with a exible duct connector (listed to UL 2043), the CAR3 must
be inserted at least 1.2 times the duct diameter from the exible duct and/or duct connector.
Orient the CAR3 according to the airow direction
indicated on the device. Horizontal or vertical mounting
is acceptable.
3
6
0
°
Regulator must be installed in a metallic air duct as pictured above. D represents the regulators
maximum outer diameter.
Minimum
1.2 x D
Minimum
1.2 x D
D
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CAR3 IOM_USA. 0620
©2020 American ALDES Ventilation Corporation and ©2020 ALDES Canada. Reproduction or distribution, in whole or in part, of
this document, in any form or by any means, without the express written consent of American ALDES Ventilation Corporation, is
strictly prohibited. The information contained within this document is subject to change without prior written notice.
Aldes North America
USA 800.255.7749 • CAN 800.262.0916 • www.aldes-na.com
5. TROUBLESHOOTING
PROBLEM CAUSE SOLUTION
AIRFLOW TOO LOW
Insufficient duct pressure. Check fan ratings. Replace fan if too small
Increase fan speed.
Excessive duct air leakage. Seal ducts with mastic or tape.
CAR3 damper
not functioning properly.
Check CFM calibration on CAR3.
Adjust to proper airflow value.
AIRFLOW TOO HIGH
AND/ OR NOISY
OPERATION
CAR3 too close to fan. Add manual damper to reduce pressure
across CAR3 to normal operating range.
Fan at too high a speed. Lower fan speed.
CAR3 damper
not functioning properly.
Check CFM calibration on CAR3.
Adjust to proper airflow value.
4. MAINTENANCE & WARRANTY
• The CAR3 needs no maintenance when used in normal conditions. The addition of antimicrobial and
anti-static additives in the material increases the longevity and reliability of the CAR3. There is no risk
of dust deposit or obstruction because the CAR3 has no airways subject to clogging. If the intended
application includes air heavily loaded with dust or grease, access to the CAR3 should be possible
through the terminal device or with an access panel or door.
• ALDES Ventilation Corporation warrants the CAR3 to be free from manufacturing defects and
guarantees the performance within specied limits for a period of seven (7) years when installed in
normal environmental air systems for general residential and commercial heating, ventilating and air
conditioning. This warranty does not include installation in industrial
applications or caustic, noxious
or otherwise hazardous airhandling equipment. This warranty
is limited to replacement of the product
only and does not extend to consequential claims.
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5
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