Regulatory Edition

Required

Select the edition of ADF(1) governing this project. Determines the declaration on the output record.

ADF(1) 2021
Standard work prior to 24 Mar 2027 ADF(1) 2026
From 24 Mar 2027 / HRRBs 24 Sep 2027

Part 1 — System Details & Declarations

Required

All fields marked * are required for Building Control submission.

1.1 — Installation Address

Dwelling name / number *?

Street *

Town *

County

Postcode *

1.2 — System Classification

Natural ventilation — background ventilators + intermittent extract (System 1)Part 3a applies

Decentralised Mechanical Extract Ventilation — dMEV (System 3, decentralised)Individual room continuous extract units, no heat recovery — Part 3b applies

Centralised continuous MEV or whole-house MVHR / dMVHR / srMVHR (System 3 or 4)Ducted systems or decentralised heat recovery with supply & extract — Part 3c applies

OtherSystem not listed above — enter details below

System description / ADF(1) classification?

Units / Systems Installed

Select the VENTI product from the dropdown. Add as many units as required.

1.3 — Installation Engineer

Engineer name *

Company *

Address line 1

Postcode

Telephone

Date of installation *

1.4 — Commissioning Engineer

Engineer name *

Company

Competent Person Scheme?

Registration number

Email address

Telephone

Control types installed?

Location of manual / override controls

Dwelling Parameters — Whole-Dwelling Ventilation Check

ADF(1) para 1.20: The minimum whole-dwelling ventilation rate is the higher of the bedroom-count rate (Table 1.3) and the floor-area rate (0.3 l/s/m²). Both calculations are applied and the larger value governs.

Number of bedrooms *?

Total internal floor area (m²) *?

Part 2a — Installation Details

Required — all systems

Complete before commissioning begins.

Installation check	Response
Installed per manufacturer's requirements??	Yes No
ADF(1) paragraphs 1.74–1.87 followed (ducting, insulation, terminals, inspection)??	Yes No
Any deviations from paragraphs 1.74–1.87 — documented?	Yes N/A No

Deviations detail (if applicable)

Part 2b — Visual Inspection (Pre-Commissioning)

Required — all systems

Complete before Part 3.

Inspection item — all systems	Response
Background ventilator quantity and equivalent area meets ADF(1) (Table 1.7 natural vent.; para 1.64 continuous MEV)??	Yes No
All background ventilators left in open position?	Yes No N/A
Correct number and location of extract terminals — satisfy Table 1.1 or 1.2?	Yes No
Installation complete — no obvious defects?	Yes No
Internal doors have sufficient undercut — 10mm above floor finish or 20mm above bare floor surface (para 1.21)??	Yes No
All protective packaging removed (including from background ventilators)?	Yes No
All systems clean internally and externally?	Yes No
System installed to allow maintenance access and component replacement?	Yes No

2b.3 — Other inspections

Check	Response
At initial start-up: any abnormal sound, vibration or unusual smell?	Yes No
Detail — describe the sound, vibration or smell observed:
During continuous operation: any excessive noise?	Yes No
Detail — describe the excessive noise and its location:

Ducted systems — continuous MEV / MVHR additional checks

Required for Part 3b and Part 3c systems. Leave blank for natural ventilation (Part 3a).

Additional inspection item — ducted systems	Response
Appropriate air terminal devices installed to allow system balance?	Yes No
Heat recovery unit and all ductwork effectively insulated and sealed — heated and unheated spaces?	Yes No N/A
Condensate connection complete and draining correctly? (MVHR / srMVHR only)	Yes No N/A
Filters installed?	Yes N/A
Ductwork installed to minimise air resistance and leakage?	Yes No

Part 3a — Intermittent Extract Fan Testing

System 1 — Natural ventilation

Complete this section for natural ventilation with intermittent extract fans (System 1). Leave blank if not applicable.

3a.1 — Commissioning Equipment (UKAS calibrated)

Requirement: Device and hood calibrated together within 12 months at a UKAS-accredited centre. Accuracy ±5%. Range must include at least 4 l/s through maximum design rate.

Device model & serial number	UKAS calibration date	Certificate no.

3a.2 — Airflow Measurements

ADF(1) Table 1.1 minimum rates shown as reference. Enter design rate and measured rate. Pass = measured ≥ design rate. Measured rate = average over ≥10 seconds.

Room type	ADF(1) min. (l/s)	Design rate (l/s)	Measured (l/s)	Status

For cooker hoods, record highest setting only.

Date of commissioning

Additional notes

Part 3b — dMEV Commissioning (Decentralised Continuous Extract)

System 3 decentralised — dMEV

Complete for decentralised continuous extract (dMEV — no heat recovery). Leave blank if not applicable.

3b.1 — Commissioning Equipment (UKAS calibrated)

Device model & serial number	UKAS calibration date	Certificate no.

3b.2 — Airflow Measurements (Extract)

High rates from ADF(1) Table 1.2. Total continuous rate of all units must meet the whole-dwelling rate (Table 1.3, calculated from bedroom count and floor area above).

Room type	ADF(1) high rate min.	Measured high rate (l/s)	Status	Measured continuous (l/s)
Total continuous rate (all units)			→ whole-dwelling	0.00 l/s

Date of commissioning

Additional notes

Part 3c — Centralised MEV / MVHR / srMVHR Commissioning

Systems 3 & 4 — centralised / heat recovery

Complete for centralised MEV or any MVHR / srMVHR / dMVHR system. Supply section (3c.3) is required for heat recovery systems only — leave blank for extract-only systems.

3c.1 — Commissioning Equipment (UKAS calibrated)

Device model & serial number	UKAS calibration date	Certificate no.

3c.2 — Extract Airflow Measurements

Room type	ADF(1) min. high rate (l/s)	Design high rate (l/s)	Measured high rate (l/s)	Status	Design continuous (l/s)	Measured continuous (l/s)
Total extract continuous rate					→ whole-dwelling	0.00 l/s

3c.3 — Supply Airflow Measurements (MVHR / srMVHR only — leave blank for MEV / dMEV)

Room type	Design high rate (l/s)	Measured high rate (l/s)	Design continuous (l/s)	Measured continuous (l/s)
Total supply continuous	—	—	—	0.00 l/s

Date of commissioning

Additional notes

Completion Checklist & Commissioning Sheet

Approved Document F — Appendix C Commissioning Record

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Completion Checklist & Commissioning Sheet

Approved Document F — Appendix C Commissioning Record

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