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Nicotra Gebhardt DDP 9/9 EC Alternative — LONGWELL LWDD9-9-EC

Looking for an alternative for Nicotra Gebhardt DDP 9/9 EC? The LONGWELL LWDD9-9-EC has the same impeller diameter. Catalogue ratings, measured curves and dimensioned drawings for every model are on the LONGWELL Fan Selector; final selection is made at your duty point. Typical applications: AHU OEM, cleanroom FFU, US AHU OEM.

Reference model: Nicotra Gebhardt DDP 9/9 EC Diameter: Ø250 mm Family: DDP series → LONGWELL LWBE3G / LWAE3G / LWFC Sample: 1–3 days
Reference model
Nicotra Gebhardt
DDP 9/9 EC
DDP series · EC plug fan · Ø250 mm
→
LONGWELL series
LONGWELL
LWDD9-9-EC
Same impeller diameter (Ø229 mm) · dimensions per LONGWELL drawing · 15–30 day production lead time

Specification Comparison

Specification Nicotra Gebhardt DDP 9/9 EC LONGWELL LWDD9-9-EC
Fan type EC plug fan EC direct-drive double-inlet forward-curved blower (scroll housing)
Impeller diameter Ø250 mm Ø229 mm · frame 9/9 (LWDD9-9-EC) Same frame size
Airflow range 500–2,200 m³/h per model curve — LWDD line up to 4,362 m³/h (12/12 frame)
Static pressure (max) 720 Pa up to 587 Pa (nameplate)
Motor power (max) 340 W rated per model (EC external-rotor)
Noise floor (Lw) 60 dB(A) per model (nameplate)
Voltage 200–240 V 1Φ 220–230 V 1Φ
Control input 0–10 V / PWM / Modbus / EC-Control 0–10 V / PWM / Modbus RTU (RS485)
IP rating IP54 / IP55 per model datasheet
Certifications CE · UL · VDE · EAC CE · RoHS
Sample lead time Per manufacturer quotation 1–3 days
Series lead time (≤500 units) Per manufacturer quotation 15–30 days
Pricing Per manufacturer quotation Quoted per project
Verify it on the LONGWELL selector: LWDD9-9-EC — 9/9 frame, data and drawing · all LWDD / LWFA-E Ø178–254 mm models (12) · all 26 commercial blowers · check your own duty point · samples, MOQ and lead time

LWDD9-9-EC at a glance

Production Lead Time

15–30 days
Ex works for production batches. Stock standard models ship as samples in 1–3 days.

Pricing

Quoted per project
Price depends on model, voltage, control option and quantity. Sample fees are credited in full against the first production order.

Same Impeller Diameter

Ø229 mm
Same impeller diameter; confirm the mounting hole pattern and inlet ring against the LONGWELL drawing before ordering.

Installation and control: what to check

Mechanical

Mounting dimensions, inlet ring diameter, motor shaft height and terminal-box position of the LONGWELL LWDD9-9-EC are given on its dimensioned drawing. Compare them with the installed fan before ordering.

Electrical & control

The LONGWELL LWDD9-9-EC accepts a 0–10 V analog speed reference, PWM and Modbus RTU (RS485) control signals (per model; see the model datasheet). LONGWELL supplies its Modbus RTU register map with the fan so the BMS points can be re-mapped; the register addresses are not identical to the Nicotra Gebhardt map.For other bus protocols, ask LONGWELL engineering for the integration options.

Performance

The measured P-Q curve of every LONGWELL model is on its model page; we check your duty point against it before quoting.

Typical Applications

The LWDD9-9-EC is typically specified for AHU OEM, cleanroom FFU, US AHU OEM. Common application categories include:

  • AHU OEM
  • FFU
  • Cleanroom

Particularly suited for US AHU OEM specifications.

FAQ

What should I check before using LONGWELL LWDD9-9-EC in place of Nicotra Gebhardt DDP 9/9 EC?
The impeller diameter is the same. Confirm the mounting hole pattern, inlet ring diameter and shaft height against the dimensioned drawing on the LONGWELL LWDD9-9-EC model page before ordering; the available control inputs (0–10 V / PWM / Modbus RTU) and voltages are listed in the table above.
Where can I find efficiency data for LWDD9-9-EC?
LONGWELL does not publish a single peak-efficiency figure for the LWDD9-9-EC. The model page on the selection site gives airflow, static pressure and input power along the curve (measured where marked, nameplate-estimated otherwise), so the efficiency at your duty point follows directly; a test report for a specific model is available from engineering on request.
What is the LONGWELL lead time?
LONGWELL LWDD9-9-EC ships in 15–30 days for orders up to 500 units and 6–10 weeks for 1,000+ unit OEM programs. Sample units ship in 1–3 days from stocked Ø250 mm inventory.
How is LONGWELL pricing determined?
LONGWELL quotes per project. Pricing depends on quantity, voltage, IP rating, and control protocol options.
What applications is LWDD9-9-EC typically used for?
LWDD blowers are used in compact AHU, fan-coil and rooftop units where a direct-drive double-inlet blower with EC speed control is specified.

Evaluate a LONGWELL alternative to DDP 9/9 EC — samples in 1–3 days

Send a quick request — model + quantity + delivery address. Sample unit ships in 1–3 days for field validation. Series production at 15–30 day lead time after PO.

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Official Product Page
Browse the full Commercial Centrifugal Fans & Blowers range on longwellfans.com — request a quote on LWDD9-9-EC directly.
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Nicotra Gebhardt® is a trademark of its owner. LONGWELL is an independent manufacturer and is not affiliated with, endorsed by, or sponsored by Nicotra Gebhardt. This page is published as engineering reference based on public datasheets. All performance figures reflect specific test conditions; final selection should be confirmed by duty point, voltage/control, mounting and project validation.