aldes ZRT-IL In Line Zone Terminal Ventilation Instruction Manual
- June 9, 2024
- aldes
Table of Contents
ZRT-IL
IN-LINE ZONE TERMINAL
Instruction Manual
ZRT-IL In Line Zone Terminal Ventilation
AIRFLOW & ZONE CONTROL
IOM
READ AND SAVE THESE INSTRUCTIONS
| ZRT-IL1 MODEL | ZRT-IL2 MODEL |
|---|
Airflow rate can be set or adjusted by rotating the dial from either side. The
airflow indicator will move to show the selected CFM. The airflow label has
multiple defined setpoints, but the unique adjustment mechanism of the CAR3
allows for infinite adjustability between the minimum and maximum limits.
The ZRT-IL can activate fans used in smaller central ventilation systems.
Through the use of an integral damper end-switch, the ZRT-IL can trigger the
remote fan to start. This provides the distinct advantage of allowing the fan
to only ventilate specific spaces when called upon, without the need for
separate fans in each space. This is especially important in residential bath
applications using popular in-line and multi-port fans, where low noise and a
single exterior vent penetration are desired.
Description
ALDES patented* Zone Register Terminals (ZRT®) are designed to introduce
flexibility and dynamic control to central ventilation systems. Used in both
large and small systems, the ZRT-IL zonally regulates ventilation where it is
required without the need for individual fans. Each ZRT-IL is a combination
register box, control damper, removable access plate and optional flow
regulator(s). This unique combination provides up to three different control
schemes without the need for expensive pneumatic, electronic, or DDC control
systems.
The ZRT-IL can be ordered in a supply or exhaust ventilation configuration. To
ensure the proper operation of the damper assembly, do not exceed 1.0 in. w.g.
of differential pressure across the damper door.
By replacing static grilles in large central systems, the ZRT-IL1 model
provides on-off control for on-demand ventilation. This allows central fan
downsizing and promotes energy savings by minimizing necessary fan horsepower
and ventilation-induced heat and cooling loads on the building. The optional
constant airflow regulator can be installed in the ZRT-IL1’s extended duct
collar to place a maximum flow limit on each terminal. The automatic operation
of the constant airflow regulator will prevent noise and excessive energy
consumption caused by over-ventilation, as well as fluctuations in airflow
rates as total system pressure varies.
The ZRT-IL2 model can be used for combination low-flow indoor air quality
ventilation and on-demand high-flow spot ventilation using the same central
fan system. This is achieved by integrating a minimum constant airflow
regulator directly into the damper sub-assembly. With the damper completely
closed, the constant airflow regulator will allow steady, low-continuous
ventilation during fan operation. When other terminals are opened for on-
demand control of spot ventilation, the closed ZRT-IL2 will maintain the
specified low-continuous rate through the constant airflow regulator minimum
flow control. By opening the ZRT-IL2’s control damper, the low-flow regulator
is removed from the air stream, allowing either controlled (using optional
second constant airflow regulator) or unrestricted maximum-boost ventilation.
For units with optional wireless communication relay, see “Wireless
Communication Programming Supplement.”
Warning
TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS, OBSERVE THE FOLLOWING:
-
Use this unit only in the manner intended by the manufacturer.
If you have any questions, contact the manufacturer. -
Before servicing or cleaning the unit, switch power off at service panel and lock service panel 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.
-
To reduce the risk of fire and electric shock, the integral damper end switch should only be used to switch ventilation equipment rated Maximum 10A, 1/2 HP.
-
Sufficient air is needed for proper combustion and exhausting of gases through the flue (chimney) of fuel-burning equipment to prevent backdating. 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. -
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 effects of excessive indoor humidity.
-
Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes and standards, including fire-rated construction.
-
When cutting or drilling into wall or ceiling, do not damage electrical wiring and hidden utilities.
Caution
- For general ventilating use only. Do not use to exhaust hazardous or explosive materials and vapors.
- Automatically operated device. To reduce the risk of injury, disconnect from power supply before servicing.
- ZRT-IL is acceptable for use over a tub or shower when installed in a GFCI-protected circuit. If wired directly to the fan or ZRT-IL, a single Ground Fault Protector on the 120 VAC common power supply must be used to protect all devices on the same circuit.
MAINTENANCE SERVICE PARTS| Models Jan.
2014 or Later| Models Dec.
2013 or Earlier
---|---|---
Damper Motor 24 VAC| 85 695| 85 690
Damper Motor 120 VAC| 85 696| 85 691
Damper Assembly 24 VAC for Models w/ 4″ Duct Collar| 36 134| 36 114
Damper Assembly 24 VAC for Models w/ 6″ Duct Collar| 36 136| 36 116
Damper Assembly 120 VAC for Models w/ 4″ Duct Collar| 36 135| 36 115
Damper Assembly 120 VAC for Models w/ 6″ Duct Collar| 36 137| 36 117
Clean the grille monthly (if so equipped).
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 heated or unheated space, with consideration for the potential of condensation in the ducting or fan housing.
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 file a
damage claim with the carrier. ALDES is not responsible for damage incurred
during shipment.
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.
FIGURE 1 – MOUNTING
IMPORTANT:
Mounting brackets must be securely anchored to joists.
Mounting
The ZRT-IL is available with mounting brackets to accommodate new or existing
construction. The versatile mounting options permit installation above drop
ceilings, between ceiling joints, or within a small soffit location (See
Figure 1).
Wiring
The ZRT-IL is available with 24 VAC or 120 VAC actuator motors.
120 VAC wiring options are shown in Figures 2-4, and 24 VAC wiring options
using the Zone Terminal Fan Control Center (Model ZTC) are shown in Figures 5
and 6.
FIGURE 2
Intermittent fan operation using 120 VAC power supply to ZRT-IL1 terminals.
SPST convenience switches, such as manually operated switches, mechanical
timers, or Dehumidistat, may be used to control each ZRT and fan in this
configuration.
FIGURE 3
Intermittent fan operation using 120 VAC power supply to ZRT-IL1 terminals.
SPST convenience switches, such as push-button timers or motion sensors, may
be used to control each ZRT and fan in this configuration.
FIGURE 4
Continuous fan operation using 120 VAC power supply to ZRT-IL2 terminals. The
fan and ZRT terminals may be wired independently.
FIGURE 5
Intermittent fan operation using 24 VAC ZTC Zone Terminal Control Center and
ZRT-IL1 terminals. SPST convenience switches, such as manually operated,
mechanical timers, or Dehumidistat, may be used to control each ZRT-IL and fan
in this configuration. The fan is controlled by the ZTC.
*NOTE:
UP TO 8 ZONE REGISTER TERMINALS MAY BE USED ON A SINGLE ZTC CONTROL CENTER.
MAXIMUM 5 IN SIMULTANEOUS OPERATION.
FIGURE 6
*NOTE:
UP TO 8 ZONE REGISTER TERMINALS MAY BE USED ON A SINGLE ZTC CONTROL CENTER.
MAXIMUM 5 IN SIMULTANEOUS OPERATION.
For more information, contact your Aldes sales advisor,
visit aldes-na.com,
call 1.800.255.7749, or find us on
©2022 American ALDES Ventilation Corporation and ©2020 ALDES Canada. ZRT- IL_IOM_0822. Aldes reserves the right to modify its products at any time to introduce new technologies.