EQUIPMENT / EQUIPMENT FAMILY

Langri wall-mounted water air conditioners · Piping and wall access

A wall-hung room terminal fed with heated or chilled water from a central plant, sold in two curved-shell styles.

From Hebei Langri · Fan-coil manufacture and heating/cooling equipment

Product guide · HVACDeck Editorial · Sources checked 2026-10-11

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Manufacturer catalogue image · Curved-shell wall hydronic family

01 / UNDERSTAND THE EQUIPMENT

Langri wall water terminals: plant connection, wall routing and room duty

Langri's 壁挂式水空调, wall-mounted water air conditioning, is a hydronic room terminal: it hangs on the wall and runs on water from a heat pump or chiller plant. The catalogue picture shows a long upper return grille and a lower horizontal discharge opening. It looks like a split-system indoor head, but it sits in a water category, so it is ordered against your plant's water temperatures and comes without its own outdoor compressor.

Two curved-shell styles are offered, 静弧 and 靓弧, with no schedule showing different internals. An energy-label sticker is visible in the illustration, but its print is too small to read. Langri publishes no room-area figure, cooling output, pipe size, water pressure or fan input. Send your plant's supply and return temperatures, the room load and the wall construction, and ask for a named terminal with its selection sheet, valve set and rear mounting drawing.

02 / READ THE CONDITIONS

Published parameters and their scope

This is an equipment family; ask the manufacturer to select the model that matches your duty.

Family designation: Curved-shell wall hydronic family

Swipe the table, or focus it and use arrow keys, to read the conditions and sources.

Manufacturer-published values · conditions are part of the specification
Parameter	Published value	Conditions and sources
Product category	Wall-mounted water air conditioning	Official category. Ask Langri to confirm it has no refrigerant connection. Source
Air openings shown	Long upper return grille and lower horizontal outlet	Airflow, throw, sound and louvre control come with the selected model. Source
Shell styles	静弧 and 靓弧 curved-shell offers	Shown as two looks of one terminal family. Source
Published performance and connections	None on the product page	Room area, cooling output, pipe size, water pressure and fan input come at selection. Source
Energy label in the picture	Sticker present; fine print not reliably legible	Ask for the label or report for the ordered model. Source

Selection and application

Start from the water plant

The water category decides the order. Ask Langri for the coil circuit, water connection positions and sizes, supply and return conditions and the maximum working pressure. Confirm which valve, actuator, strainer and air vent come with the unit.

If the building already has a heat pump or chilled-water plant, send its available temperatures, flow limits and control description, and ask for a named terminal selected at those conditions. Ask too whether the terminal is two-pipe or four-pipe and whether any plant-side controller is included.

Routing pipes and drain on a real wall

The front view gives no rear clearance, mounting-plate fixings or the side that takes pipes and drain. Request the current rear and side drawing and the approved routing options. Show the wall build-up, insulated connections and valve access on the installation detail.

For cooling, get the drain instructions and the condensate outlet of the selected unit, with any pump. Ask how drainage is tested on site and how a blocked drain or leak is found and cleared. The upper return grille also needs the clearance Langri specifies from the ceiling and nearby furniture. Where the wall cannot take the pipework, Langri exposed console units stand on the floor instead.

Room comfort at a named operating point

Ask for sensible and total cooling and heating at stated entering air and water conditions, with water flow, pressure drop, fan speeds and electrical input. Sound data should name the fan speed and the measurement basis. A curved shell and the word 静 (quiet) say nothing about the level you will hear in the room.

Get the current energy label or test report and match it to the ordered terminal. Size from a calculated room load and a rated terminal output, not from a room-area figure.

Controls and maintenance on the wall

Confirm the thermostat position, local or remote setpoint, the valve and fan interlock and restart after a power cut. Request the wiring diagram and the agreed behaviour when the plant is off. Then agree filter cleaning, cover removal and coil and motor replacement with the unit hung on your wall.

Water side

Coil and valve selection at your plant's real water conditions, with connection sizes.

Wall installation

Rear clearances, fixing, insulated pipe route and drain access on an approved drawing.

Room duty

Selected heating and cooling output, sound and control sequence at the intended operating point.

Confirm in writing before ordering wall terminals

Ask Langri to confirm in writing that the terminal runs on water only, then: the model and shell style; water connection sizes, pipe arrangement and maximum pressure; included valve, actuator and strainer; cooling and heating output with water flow and pressure drop at your temperatures; fan input and sound per speed; drain outlet and any pump; rear mounting drawing and clearances; whether 静弧 and 靓弧 share the same internals; the energy label for the ordered model; and price and lead time.

Sources

Compiled by HVACDeck Editorial. Figures are as published by the manufacturer; ask for test records for the unit you select.

Official 静弧 wall-terminal pageChecked 2026-10-11 · Places the unit in the water air-conditioning category and shows front illustrations; no rating table.
Official wall-category style pageChecked 2026-10-11 · Shows the second curved-shell style in the same category.

Editorial method and corrections · Report a detail with this page URL