Cased coil with side tubing
Rectangular casing, circular face opening, visible fins and tubing on one side.
Read the sourceEQUIPMENT / EQUIPMENT FAMILY
Yingnar precision-AC coils · OEM finned heat exchangers
Custom finned coils and coil assemblies for precision air-conditioning equipment, built to the buyer's drawing and duty.
From Zhongshan Yingnar Refrigeration Technology Co., Ltd.
Product guide · HVACDeck Editorial · Sources checked 2026-10-11
Yingnar precision-AC coils: assembly types, tooling and what to specify
Yingnar makes finned coils to order for precision air-conditioning equipment. Its category shows three photographed assemblies: two framed or cased coils with a circular face opening, and a smaller finned coil with return bends and mounting brackets. No model plates, dimensions or ratings are published for them.
That means each coil is quoted from your drawing and duty. Yingnar publishes tube and fin tooling in Ø5, Ø7 and Ø9.52 sizes and a process flow with expansion and pressure or water-bath leak checks as key steps. Send the coil's role in the unit, air and fluid conditions, face size and connections, and ask Yingnar for a drawing, a performance calculation and a first-article sample.
Published parameters and their scope
This is an equipment family; ask the manufacturer to select the model that matches your duty.
- Family designation
- Precision AC coil catalogue
Swipe the table, or focus it and use arrow keys, to read the conditions and sources.
| Parameter | Published value | Conditions and sources |
|---|---|---|
| Category | Precision-air-conditioning heat exchangers | Three photographs; no named or rated models. Source |
| Assembly forms shown | Two cased/framed assemblies and a smaller finned assembly | Ask for the parts list and supply scope of the assembly you order. Source |
| Tooling | Separate Ø5, Ø7 and Ø9.52 tooling patterns published | Ask which pattern Yingnar proposes for your coil. Source |
| Ratings and design data | Duty, circuit, pressure limits and interfaces require confirmation | Supplied per order from your specification. Source |
Selection and application
The three assemblies in the photos
The photos help to discuss shape and layout with Yingnar. Sizes, connection diameters and fixing points come from the drawing you agree, since none are shown.
A circular face opening may suggest a fan position, but the photos do not show what else is supplied. State whether you are buying a bare coil, a coil in its casing or a larger subassembly, and ask for a parts and supply schedule.
Second cased coil
Another cased form with a circular opening and different fittings.
Read the sourceSmall finned coil
Return bends and sheet-metal mounting brackets visible.
Read the sourceA duty Yingnar can select against
State what the coil does in your unit: evaporator, condenser, chilled-water or hot-water coil. For the air side give entering dry bulb and humidity, the leaving condition or duty, airflow and allowed pressure drop. For the fluid side give temperatures and flow, or the refrigerant and its operating conditions, with allowed pressure drop and design limits. The refrigerant guide covers how refrigerant choice affects design pressure.
Where moisture removal matters, give the sensible and latent duty and real entering-air conditions rather than a single total capacity. Ask Yingnar for its calculation or test data for the drawing and circuit offered.
Geometry, circuit and tooling
Yingnar lists tube and fin tooling including Ø7×21×12.7, Ø7×21×18.19, Ø9.52×25.4×22, Ø9.52×25×21.65 and Ø5×19.5×11.6. Its processing page also shows fin patterns and horizontal and vertical expansion. These are the routes the plant can build; the geometry for your coil is chosen with the duty.
On a controlled drawing, give face size, rows, tube diameter, wall and grade, fin material, pattern and spacing, circuiting and connection positions. Add the casing, mounting, drain and access details. Ask which tool Yingnar proposes and which features need new tooling or an agreed deviation. Other coil makers listed here, such as Xingchang coated condenser coils, quote on the same set of details.
Thermal core
Tube and fin geometry and circuit, approved together with the duty.
Equipment interface
Face size, opening, connection ends, mounting tolerances, casing and drain.
Manufacturing route
The fin tool, forming and expansion process and any special fixtures.
Read the sourceProcess flow and what to test
Yingnar's process card marks expansion and pressure or water-bath leak checks as key processes. It also shows nitrogen charging, automatic and manual joining, internal blowing, degreasing and drying, a leak-repair and re-check loop, barcode marking and packing.
Write the acceptance into the order: material traceability, internal cleanliness, joint quality, dimensional checks and the test medium, pressure, duration and pass limit. Ask for records tied to the sample and each lot, how repaired joints are retested, and how the barcode links to the drawing revision. The pressure and tightness test guide lists typical terms.
Published
A process flow card with inspection and rework stages.
Read the source
Needed for your order
Numerical acceptance limits and lot records linked to the approved drawing and circuit, including rework.
Materials and service conditions
Tube and fin colour in a photo says nothing about alloy, coating or design pressure. Yingnar publishes no refrigerant list or material certificate for this category. Describe the environment, condensate and cleaning exposure and the fluid or refrigerant, and ask for the material and coating schedule.
For a replacement coil, check circuit, connections, pressure and temperature limits and physical fit against the coil being replaced. Company records on the Yingnar company page cover the business; ask separately for the documents your market needs for the coil, as set out in the conformity documents guide.
Sample, then production
Yingnar publishes no MOQ, sample lead time, price or warranty for this category. Ask for sample and production prices on the same drawing, materials and inspection scope, and agree packing, sealed ends and any holding charge left in the coil.
Fix the brief
Thermal conditions, geometry and circuit, materials, connections, mounting and supply scope.
Check the first article
Dimensional and test records against the drawing revision, then performance and fit in your equipment.
Release production
Lot marking, change control, rework and re-check, packing, written warranty and responsibility at handover.
Before the coil order: what Yingnar should confirm in writing
Ask Yingnar to confirm in writing: the drawing revision and circuit; the tooling used; tube and fin materials and coating; design pressure and the test pressure, medium and duration; calculated sensible and total duty at your conditions; cleanliness and dimensional checks; MOQ, sample and production lead times, price and warranty.
Sources
Compiled by HVACDeck Editorial. Figures are as published by the manufacturer; ask for test records for the unit you select.
- Official precision-air-conditioning coil categoryChecked 2026-10-11 · Three photographs of coil assemblies for precision air conditioning.
- Official introduction and tooling listChecked 2026-10-11 · Tube and fin tooling sizes and the applications Yingnar serves.
- Manufacturing capability galleryChecked 2026-10-11 · Eleven images of tube, fin, forming and fitting work.
- Manufacturing process-flow cardChecked 2026-10-11 · Process steps with key inspections and the rework loop.
Editorial method and corrections · Report a detail with this page URL
Send an enquiry
Send the manufacturer your required duty, installation conditions and the points listed above to confirm.