Intry Verified receipt
Is the Intry Superheat & Subcooling Calculator accurate?
The provenance receipt for the Intry Superheat & Subcooling Calculator: the exact authority its values derive from, the edition they are keyed to, who has final say, and what our automated checks hold them against, rebuilt from their cited source.
The receipt
- Calculated from
- CEC-400-2022-010-AP, Reference Appendix RA3 Table RA3.2-1 (Installer Testing at Final) · CEC-400-2022-010-AP, Reference Appendix RA3 Table RA3.2-2 (target superheat) · CEC-400-2022-010-AP, Joint Appendix JA6.1.6.3 (the airflow precondition) · Carrier PH5SAN5, Carrier SM10-R454B-03, Carrier 25SCA5, Goodman IOG-4048C, ICP 428 01 5106 00, Trane 88-M5MHWUN-1A-EN, Rheem RD16AY, and Bosch service literature · The per-machine charge-target corpus (registered manufacturer books, cited by form number) · York ST-022-12, Figures 1 and 2 (example charging charts) · Rheem RD16AY / RD18AY section 5.7, and Lennox 13ACX 506374-01 page 20 · Copeland discharge-temperature guidance, and Proctor Engineering on airflow and capacity. Reused verbatim from the locked engine, never re-written for this page.
- Checked
- Before any release, an automated check rebuilds the calculated figures from the locked engine that produces them and holds each one against the source it cites, so a number answers to its source and not merely to itself. As of the current build that suite holds 23740 checks, and this page has to clear them too. This is our own deterministic gate, not a third-party audit.
- Runnable
- Exposed at the Intry MCP endpoint. An AI assistant can run this calculator, and before each release an automated check confirms the answer it returns is identical to the one the website's own engine produces.
- Final say
- The unit nameplate and the manufacturer's charging chart have final say.
Frequently Asked Questions
Is the Intry Superheat & Subcooling Calculator accurate?
Every figure an Intry calculator computes comes from a locked source module, not hand-typed. 23740 automated checks re-derive and source-check the numbers against the locked modules each figure is traced to: the manufacturer PT tables behind the saturation temperatures, superheat and subcooling, and the transcribed code and service-literature constants behind the charge, metering, airflow, approach and discharge line figures, each quoted with its own source in the panel it appears in before each deploy. This is our own deterministic gate, not a third-party audit. The per-tool receipt is public at https://www.intrysys.com/verified.