Wastewater route
Define recoverable flow/temperature, collection/storage, module material/area, contamination and cleaning access. Identify the actual included pumps and pipework.
Read the sourceEQUIPMENT / MODEL REFERENCE
Zhongke Xinying ZKXY-DP-Y220II wastewater heat-recovery hot-water reference
A bathing-wastewater heat-pump enquiry needs measured source availability, hourly hot-water demand and a confirmed system configuration.
From Shenyang Zhongke Xinying Environmental Equipment Co., Ltd.
Individual product research · HVACDeck Editorial · Sources checked 2026-10-11
Start with the wastewater source and hot-water load, not the advertised bather count
The official source currently heads this catalogue entry ZKXY-DP-Y220II, with an advertised 600-bather application description. The directory’s earlier SY-220II designation has not been confirmed as an alias. Ask for the actual unit nameplate and configuration before using either name in an order.
The detail describes recovering heat from bathing wastewater through a wastewater heat exchanger to a heat-pump evaporator, then heating domestic water. It does not give a kW rating, rated hot-water production, electrical input, refrigerant or a performance test condition. The 600-person description is therefore not a heating-capacity or peak-flow specification.
The source photograph shows a blue cabinet alongside a framed wastewater heat-exchange module with labelled connecting pipes. A separate working-principle graphic illustrates multiple source arrangements. Neither supplies a complete installation drawing or a bill of materials for every DP-Y220II package.
Published parameters and their scope
The catalogue identifies a model reference; confirm the current revision and selected options.
- Model
- ZKXY-DP-Y220II
Swipe the table, or focus it and use arrow keys, to read the conditions and sources.
| Parameter | Published value | Conditions and evidence |
|---|---|---|
| Current official designation | ZKXY-DP-Y220II | Observed source heading. Earlier SY-220II directory name is not established as an interchangeable variant. Source |
| Application description | Bathing-wastewater heat recovery for hot water | Source description; exact source quality/flow and selected hot-water duty are not rated on the page. Source |
| Illustrated hot-water labels | 10°C inlet; 65°C hot-water outlet | System-principle graphic labels only, not a measured DP-Y220II rating or guaranteed envelope. Source |
| Illustrated wastewater label | 5°C wastewater discharge | Graphic illustration, not a proven project discharge condition or minimum operating limit. Source |
| Published performance gaps | Heating duty, water production, input and refrigerant unspecified | No model-specific numerical schedule supplied by the reviewed detail. Source |
Selection and application review
Identify the current model before comparing quotations
The reviewed page title and visible heading agree on DP-Y220II; the previous directory record was SY-220II. No manufacturer cross-reference was obtained to explain the relationship. This page therefore does not merge old figures, infer an upgrade or claim that the names describe the same delivered configuration.
Have the supplier identify the actual model/revision, assembly and included heat-recovery module, with a legible nameplate, drawing and selected-duty schedule. The photographed cabinet and module support the current catalogue presentation but do not disclose compressor count, motor input or every supplied accessory.
The principle graphic presents three source routes, not three standard inclusions
The graphic depicts wastewater collection with an immersed heat-collection module, a heat-source extraction/return-well arrangement through a filter, and a summer-cooling illustration. Its 10°C, 65°C and 5°C labels describe that diagram. They are not a table proving all three routes or temperatures for one standard DP-Y220II order.
The homepage separately explains indirect immersed heat exchange using a circulating secondary fluid to transfer heat to the evaporator. For the actual installation, request a marked schematic that distinguishes wastewater, the secondary/source loop, refrigerant and domestic-water circuits. Do not assume that a pool, shower and spring-water scene means all water streams can be connected interchangeably.
Well-water route in the illustration
Treat extraction/return and filtration as a separate project arrangement. Confirm site suitability, responsibilities and the selected system design rather than assuming it is included.
Read the sourceSummer-cooling illustration
Request the applicable mode/control arrangement and useful output at that duty. A diagram’s free-cooling wording is not proof of zero system electricity or universal simultaneous hot-water/cooling operation.
Read the sourceMeasure source availability over the same hours as the hot-water demand
A bathing facility may have plentiful warm discharge during busy hours and little recoverable heat at start-up or between sessions. Average daily bathers alone cannot show that source heat and hot-water demand coincide. The source page supplies neither an hourly wastewater profile nor minimum permitted source flow/temperature.
Record wastewater volume and temperature through the operating day, interruption periods, collection losses, contamination and cleaning residues. Separately provide cold-water inlet temperature, required delivery/storage temperatures, peak hot-water flow, storage volume and demand schedule. Ask for a heat-balance selection showing available source heat, heat-pump input/output and how start-up, peak or low-source periods are covered. No unit output should be inferred from the 220 suffix or a case using a Y220 designation.
Verify savings against a defined existing system
The product description advertises 60–80% lower running costs than traditional arrangements. It does not supply a baseline, utility tariffs, measured duty or comparative report. It is therefore not adopted as an expected saving or payback for the buyer’s project. The source also uses long-life and maintenance-free language for its immersed exchanger; no model-specific evidence or written lifetime guarantee was supplied.
Ask for a calculation that identifies the displaced heating method, delivered hot-water duty, source availability, electrical input and all pumps/auxiliaries. If cooling benefits are included, state the actual recovered/usable cooling duty and avoid counting the same benefit twice. Confirm maintenance tasks and access despite the marketing wording, including how source contamination, fouling or chemical cleaning affect the selected materials and performance.
Supplier claims
Cost reduction and exchanger longevity are published marketing claims, without a reviewed project measurement report.
Read the sourceBuyer’s checkable comparison
Use matched duty/utility assumptions and meterable boundaries covering the heat pump and auxiliaries; agree how commissioning and ongoing results will be assessed.
System documents matter more than a general patent assertion
The original CN111219777A application publication names the company and describes a public-bathroom heat-recovery hot-water system. It is evidence of the disclosed invention and applicant, not a DP-Y220II performance certificate, current legal-status check or installation approval. No model linkage is asserted here.
Obtain the actual order’s materials/circuit schedule, pressure/temperature limits, electrical/control documents and applicable conformity evidence. Have the project’s competent designer confirm separation, installation and operating requirements for the water systems. The reviewed catalogue is not a finished plumbing or potable-water compliance design.
Prepare a complete heat-recovery enquiry
The source does not establish a fixed warranty duration, lead time or a complete standard package. Agree which tanks, collection works, exchanger, pumps, filter, controller and installation services are included, with an explicit responsibility boundary.
Supply source and demand records
Provide time-based wastewater flow/temperature/quality, operating interruptions and the hot-water peak/storage/delivery-temperature brief.
Approve the selected system
Confirm current model/revision, nameplate, heat-balance selection, source/secondary/domestic-water schematic and included equipment.
Approve acceptance and support
Record test conditions, delivered duty and measurement boundaries, commissioning/maintenance tasks, written warranty and the destination service party.
Sources and review scope
Compiled by HVACDeck Editorial. Source review identifies what the publication states; it is not an independent performance test or certification.
- Official DP-Y220II catalogue detail and product photographChecked 2026-10-11 · Current heading observed; old SY designation not confirmed as alias. Model photo inspected; bather/savings claims not performance ratings.
- Original system-principle graphic on the product pageChecked 2026-10-11 · Actual image visually read: 10/65/5°C labels and three illustrated source routes, not a model rating/BOM.
- Official homepage indirect-exchange explanationChecked 2026-10-11 · Secondary-fluid heat transfer description and supplier life/maintenance claims read; no guaranteed installed outcome inferred.
- Original invention-application publication — CN111219777AChecked 2026-10-11 · Original published applicant/date/subject and disclosure read; not DP-Y220II certification or current rights verification.
Editorial method and corrections · Report a detail with this page URL
Turn the evidence into an enquiry
Send the manufacturer your required duty, installation conditions and the unresolved items identified in this brief.