Front-curved HTFC, backward-curved HTFC-V and duct-mounted GDF fans: choose the wheel, motor position and accessories as separate configuration decisions.
1 published equipment referenceLatest source review 2026-10-07
01 / COMPANY
What this manufacturer offers
Zhejiang Qili HVAC Equipment Co., Ltd. publishes a ventilation catalogue from Shangpu Industrial Park, Shangyu District, Shaoxing. The company says it was established in 2007 and designs/manufactures fans, smoke-control and fire dampers, silencers and static-pressure boxes. It displays hydraulic-press, laser-cutting and levelling equipment under its production section. Published figures of 6000 m² site area, more than 30 staff and 1500 tonnes annual output are supplier statements without a dated independent capacity audit.
Qili's centrifugal catalogue explains more than a family name. The HTFC uses a forward-curved multiblade wheel, while the KDF/HTFC-V section describes backward-curved blades. Both discuss external- and internal-motor arrangements, and the HTFC text separately defines single- and two-speed types. Those choices should be resolved individually instead of being combined into one unspecified “cabinet fan”.
An official certificate image also identifies a limited HTFC-II model group. It provides a document number and dates, but its current issuer status was not independently verified. This profile connects the configuration information to that specific document scope, without treating every catalogue option as certified.
HTFC family envelope
1650–85000 m³/h; total pressure 180–1000 PaSupplier's overall family ranges. Their maxima are not a paired operating point for one selected fan. Source
Motor arrangement
A: motor outside the cabinet; B: motor insideHTFC source assigns A to smoke extraction and B to ventilation; the proposed model and evidence remain separate requirements. Source
Speed types in Qili's HTFC text
I and III: single speed; II and IV: two speedExact manufacturer definition for this family. Variable-frequency operation is another described option. Source
Normal HTFC operating conditions
Air; −20 to +40°C; humidity below 90%; three-phase 380 V / 50 HzSupplier's normal-work section, separate from short-duration high-temperature claims. Source
Published certificate number
Z2017081814002868Visually read official-site certificate image. Current validity/suspension/withdrawal status not independently confirmed. Source
Certificate-image dates
First issue 2019-08-01; replacement 2024-07-03; printed expiry 2029-07-02Dates on the displayed document, not proof that issuer status remains active today. Source
Parameters and source limits · Centrifugal cabinet fans
Swipe the table, or focus it and use arrow keys, to read conditions and sources.
Manufacturer-published information · Centrifugal cabinet fans
Parameter
Published value
Conditions and evidence
HTFC family envelope
1650–85000 m³/h; 180–1000 Pa total pressure
Across thirteen published sizes 9–40; maxima are not one operating point. Source
Motor placement
A external; B internal
A promoted for smoke extraction and B for ventilation; exact model qualification required. Source
Speed type
I/III single; II/IV two-speed
Supplier mapping; selected curves, motor and control schedule still needed. Source
Normal environment
−20 to +40°C; humidity below 90%; air
Published ordinary range, separate from special-temperature claims. Source
Published supply
Three-phase 380 V / 50 Hz
Family statement; exact selected electrical schedule required. Source
Filters and controls
Optional, not automatically included
Filter losses and increased casing length explicitly need allowance. Source
03 / PROJECT REVIEW
Qili: a cabinet-fan catalogue with meaningful configuration choices
Wheel and installation form: three distinct catalogue routes
The full centrifugal catalogue contains separate descriptions for HTFC, KDF/HTFC-V and GDF. The following distinctions come from those descriptions, rather than assumptions based on a similar model prefix. (Sources 2 and 3.)
HTFC: forward-curved cabinet fan
The source describes a low-noise forward-curved multiblade wheel and a sound-treated cabinet. It names 13 sizes, numbered 9–40, and supplies family-level flow/pressure ranges. The actual duty still requires a selected curve.
The section names backward-curved blades and a KDF fan assembly inside HTFC-V. Its stated KDF envelope is 1000–300000 m³/h and 280–2300 Pa across sizes 2.5–16; that is not the HTFC envelope or a single paired duty.
The GDF text describes a forward-curved wheel, single-side intake and square horizontal inlet/outlet connections. It distinguishes ordinary and sound-treated versions and lists some 220 V single-phase models alongside 380 V three-phase supply.
For Qili's HTFC, A/B identifies motor placement: outside or inside the cabinet. The source assigns the external arrangement to smoke extraction and the internal arrangement to ventilation. I/III versus II/IV identifies the published speed grouping. An A arrangement is therefore not itself evidence of a two-speed motor, and a II designation does not alone specify the cabinet's motor placement. (Source 2.)
The manufacturer also describes variable-frequency motors and controllers, recommending a frequency band of 25–50 Hz. That recommendation is not automatically applicable to every selected motor or fire-operating mode. Request the actual motor/controller documentation and mode arrangement rather than combining the options from the catalogue.
Twelve inlet/outlet angular positions are described, making a selected arrangement drawing important. Mark the required connection direction, maintenance side and motor access. Confirm the complete model designation and its duty at each required speed before the quotation is treated as technically comparable.
Accessories change both resistance and physical space
The HTFC standard list includes wheel, casing, motor, bearing, shaft, belt/pulleys, sound-treated cabinet, adjustment rails and inlet/outlet flanges, with a belt guard specifically associated with A. The optional list includes vibration equipment, silencer, filter, control box, mating flanges and an A-type motor rain cover. They are not all included in a base offer. (Source 2.)
Filtering adds a pressure-loss decision
The source lists primary, intermediate and high-efficiency filter options and explicitly says pressure loss must be considered and cabinet length increased as needed. Obtain the actual clean/loaded resistance basis and updated dimensions for the selected filter.
Different silencer lengths or thicker sound-treated cabinets are described. Ask for the selected arrangement and acoustic basis; the catalogue's low-noise language does not supply a numerical sound result for the complete assembly.
The official-site image is a fire-product certificate naming Zhejiang Qili as applicant, producer and production enterprise. It identifies centrifugal smoke-extraction fans and certification unit HTFC-II-30(33/11). The listed coverage includes HTFC-II-30(33/11), HTFC-II-30(24/8.5), HTFC-II-28(33/11), HTFC-II-28(24/8.5) and HTFC-II-25(24/8.5). The slash values are retained as model suffixes; their physical meaning is not invented. (Source 4.)
The image cites XF 211-2009 and certification rule CCCF-CPRZ-19:2019. It bears certificate number Z2017081814002868, a first-issue date of 1 August 2019, replacement date of 3 July 2024 and printed expiry of 2 July 2029. These are readable document entries, not an independent confirmation of current status.
The product article separately cites GA211-1999 in its historical high-temperature test statement and claims operation at 300°C for 60 minutes. The displayed newer certificate and the old article reference are separate documents. Neither has been extended to every size, variable-frequency option, explosion-proof variant, filter configuration or different family. Obtain current issuer verification and the report matching the exact order.
The issuer's public information site could not be retrieved during this review, and exact certificate-number searches did not establish a live record. Government tender-document search candidates were also excluded as project-supply evidence because the complete relevant brand entries could not be verified. An acceptable-brand list would in any event be different from an awarded or accepted supply contract.
Service terms are specific, but destination scope still matters
Qili's service page states a fan warranty of 12 months after successful commissioning for manufacturing-quality problems, and describes free repair/maintenance during that period. It also says technicians arrive within 12 hours after notice of a fault. These are the supplier's published terms; the page does not define overseas travel coverage or a response measurement procedure. Confirm the territory, exclusions and agreed times in the contract. (Source 5.)
Before handover: obtain the equipment documents
The service text calls for technical files, use/maintenance instructions and a product-conformity certificate after manufacture. Request the model-specific drawing and operating instructions with the actual configuration.
The page describes operator training and a user file including manufacturing, installation and service records. Agree what documentation and training are delivered at the actual project location.
The printed 12-month period runs from successful commissioning and concerns manufacturing-quality faults. Clarify the acceptance date, included visits/parts and destination coverage before relying on the separate 12-hour arrival statement.
Compiled by HVACDeck Editorial. Page review: 2026-10-07. Publications are attributed below; their statements are not independent measurements by this platform.
Qili centrifugal catalogue: HTFC-V/KDF and GDF — source 3Checked 2026-10-07 · Full expanded catalogue individually read. Different wheel, duct arrangement and family envelopes kept separate; maxima not combined into a selected duty.
Displayed centrifugal smoke-fan certificate — source 4Checked 2026-10-07 · Official-site image visually read at full page height. Exact model group, document number and dates transcribed; current issuer status not independently verified.
Qili official service commitments — source 5Checked 2026-10-07 · Full service text individually read. 12-month commissioning-based warranty and 12-hour arrival are published supplier terms, without verified destination coverage.
Original HTFC cabinet illustrationChecked 2026-10-11 · Actual cabinet/base/external red motor viewed; no readable selected size or rating.
