Overview
Smoke and natural ventilation control panels are used to operate compatible electric window drives where automated windows or louvres are required to support a smoke ventilation strategy and may also provide day-to-day natural ventilation control.
EBSA NZ supplies D+H RZN smoke and natural ventilation control panels for commercial window automation applications. The correct RZN panel depends on the project fire strategy, total drive current, number of ventilation groups, required fire alarm lines, standby power requirements, control inputs, field cabling and commissioning requirements.
RZN panels are different from natural ventilation-only GVL panels. A GVL panel is used for day-to-day natural ventilation control only, while an RZN panel is used where the window system must respond to a smoke control or fire alarm interface as part of the selected project design.
Explore RZN smoke and natural ventilation control panels
Use the RZN panel range below as a starting point for selecting a suitable smoke and natural ventilation control panel. Final selection should be confirmed against the connected window drives, required control groups, fire alarm interface, standby battery backup requirements, field wiring and project-specific smoke ventilation strategy.
| RZN panel | Typical positioning | Common applications |
|---|---|---|
| D+H RZN 4404-M Smoke and Natural Ventilation Control Panel | Compact smoke and natural ventilation control panel for small to medium systems. | Projects requiring fire alarm input operation, monitored standby battery backup and day-to-day ventilation control across smaller window or louvre groups. |
| D+H RZN 4408-K Smoke and Natural Ventilation Control Panel | Smoke and natural ventilation control panel with increased actuator capacity in a compact K-style arrangement. | Medium systems requiring higher total drive current with a simpler fire alarm line arrangement. |
| D+H RZN 4408-M Smoke and Natural Ventilation Control Panel | Smoke and natural ventilation control panel for medium systems requiring multiple ventilation groups and fire lines. | Projects requiring increased grouping flexibility, fire alarm interface operation and natural ventilation functions. |
| D+H RZN 4416-M Smoke and Natural Ventilation Control Panel | Higher-capacity smoke and natural ventilation control panel for larger window automation applications. | Larger smoke and natural ventilation systems requiring increased total drive current and multiple grouped window or louvre outputs. |
What smoke and natural ventilation control panels do
A smoke and natural ventilation control panel provides power, control logic and interface management for connected window drives. In day-to-day operation, the panel may open and close windows or louvres for natural ventilation using local controls, weather sensors, BMS inputs or other approved control signals.
When connected as part of a smoke ventilation strategy, the panel must respond to the required fire alarm or smoke control interface and operate the connected openings according to the project-specific fire strategy. The control panel, window drives, field cabling, battery backup and commissioning process must be coordinated as part of the complete system.
Choosing the right RZN panel
The correct RZN panel should be selected by considering the total actuator load, number of ventilation groups, number of fire alarm lines, required operating sequence, field wiring, standby power requirements and project-specific control interfaces.
A small project may only require a compact RZN panel with limited groups and fire lines. A larger or more complex project may require additional drive capacity, more grouped outputs or a more flexible panel arrangement. Where the project requires modular architecture, ACB-capable drive networks, advanced feedback, larger integration requirements or project-specific control logic, a CPS-M control panel may be more appropriate.
RZN 4404-M
The D+H RZN 4404-M is suited to small to medium smoke and natural ventilation systems. It is typically considered where compatible 24 V DC window drives need to respond to fire alarm input operation while also allowing day-to-day natural ventilation control.
This panel may suit projects requiring a compact smoke and natural ventilation control solution with monitored standby battery backup, local control options and weather sensor or BMS interface potential depending on the final system configuration.
RZN 4408-K
The D+H RZN 4408-K is used where a smoke and natural ventilation system requires increased total drive current compared with smaller RZN options, while retaining a relatively simple control arrangement.
It is generally considered for medium window automation systems where compatible 24 V DC window drives require fire mode operation, standby power and normal natural ventilation control through local controls and suitable interfaces.
RZN 4408-M
The D+H RZN 4408-M is used for medium smoke and natural ventilation systems requiring increased actuator capacity and additional grouping flexibility. It may be suitable where the project requires multiple ventilation groups and fire lines as part of the selected smoke ventilation strategy.
The RZN 4408-M should be coordinated with the selected window drives, fire alarm interface, natural ventilation control inputs, field cabling and commissioning requirements before installation.
RZN 4416-M
The D+H RZN 4416-M is suited to larger smoke and natural ventilation systems requiring higher total drive capacity. It is typically considered where several automated windows or louvres need to be operated as part of a coordinated smoke and natural ventilation strategy.
Where the system requires even greater flexibility, modular expansion, ACB-capable drive networks, diagnostic feedback or more advanced integration, EBSA NZ can assist with reviewing whether a CPS-M control panel is more suitable.
Smoke ventilation and natural ventilation functions
RZN panels can support both smoke ventilation operation and day-to-day natural ventilation functions when selected and configured as part of a suitable project-specific system.
Natural ventilation operation may involve local wall switches, key switches, rain sensors, wind sensors, room temperature inputs, BMS commands or other approved controls. Smoke ventilation operation must be coordinated with the project fire strategy, fire alarm interface, standby power requirements, manual override requirements, commissioning process and approval pathway.
Battery backup and monitored operation
Smoke and natural ventilation systems may require standby battery backup so connected openings can operate as intended during a power failure condition. Battery backup requirements should be confirmed against the project design, selected control panel, actuator load, fire strategy and relevant approval pathway.
RZN panel selection should also consider monitoring requirements, fault indication, fire line configuration, reset operation, manual controls, access for maintenance and future testing requirements.
When an RZN panel is not the right choice
An RZN panel should not be selected purely as a general-purpose control panel if the project only requires simple natural ventilation. For natural ventilation-only systems where no smoke control function is required, a GVL natural ventilation control panel may be more appropriate.
An RZN panel may also be unsuitable where the project requires larger modular control architecture, advanced integration, ACB-capable communication, diagnostic feedback, many operating zones or project-specific logic beyond the standard RZN platform. In those cases, a CPS-M modular control panel should be reviewed.
Drive and panel compatibility
A smoke and natural ventilation control panel should not be selected in isolation. The selected panel must be compatible with the window drives, required voltage, total current draw, number of drives, number of operating groups, field wiring and required operating sequence.
Some projects require simple open / close operation from a fire alarm interface and local ventilation control. Others may require weather sensor inputs, BMS interface, multiple groups, separate fire lines, status indication, synchronised drive operation or integration with a wider building services strategy. These requirements should be confirmed before final panel selection.
Control inputs and interfaces
RZN smoke and natural ventilation systems may use a range of control inputs and interfaces depending on the project design. These may include fire alarm inputs, smoke control switches, wall switches, key switches, rain sensors, wind sensors, room temperature controls, BMS inputs and mechanical services signals.
The interface strategy should be confirmed during design so the correct panel capacity, field wiring and commissioning process can be allowed for. Where openings are used for smoke ventilation, the final system should be coordinated with the project fire strategy and approval requirements.
Technical notes for specifiers
- Confirm that the window or louvre opening is required for smoke ventilation, natural ventilation or combined operation.
- Confirm the project fire strategy and required fire alarm or smoke control interface before selecting the panel.
- Confirm the selected window drive family, voltage and current draw.
- Confirm the total actuator load connected to the control panel.
- Confirm the number of ventilation groups and fire alarm lines required.
- Confirm standby battery backup requirements and access for future battery maintenance.
- Confirm whether local wall switches, key switches, weather sensors, BMS inputs or mechanical services interfaces are required.
- Confirm field cabling requirements before installation.
- Coordinate control panel location for access, commissioning, maintenance and testing.
- Do not use a GVL natural ventilation-only panel where smoke ventilation operation is required.
- Consider CPS-M where the project requires modular expansion, advanced integration, ACB-capable drive networks, diagnostic feedback or project-specific control logic.
EBSA NZ support
EBSA NZ can assist with RZN control panel selection, compatible window drive coordination, wiring strategy, fire interface planning, natural ventilation input selection and commissioning coordination. For commercial projects, EBSA NZ can also prepare project-specific specification content covering the selected RZN panel, window drives, operating strategy, interfaces and coordination requirements.
