JG/T 233-2008Ventilator for windows and doors of building (English PDF)

3.1 Ventilator for windows and doors of building

Controllable ventilation device that is installed on building envelopes (windows and doors,

curtain-wall, etc.) and BETWEEN wall AND windows and doors; with certain properties of

wind-pressure resistance, watertightness, airtightness, and sound-insulation, etc.; able to

realize the outdoor and indoor air exchange when in working condition.

3.2 Passive ventilator

Ventilator that realizes ventilation by relying on the air pressure difference generated by

indoor and outdoor temperature difference and wind pressure, etc.

3.3 Motor ventilator

Ventilator that realizes ventilation by relying on the motor device added to the ventilator

itself.

3.4 Length ventilator

Ventilator of which any two parameters of length, width and height are fixed; and the rest

one can be cut-machined into form, in certain range.

4.1 Classification

4.1.1 Name code

When ventilation rate of motor ventilator is not less than 30m3/h, A-weighted sound power

level of self noise shall not exceed 38dB(A).

7.6 Sound-insulation property

Ventilator without sound-insulation function;

a) Under shutdown condition, weighting standardization sound pressure level difference

of small ventilator component shall not be less than 25dB;

b) Under open condition, weighting standardization sound pressure level difference of

small ventilator component shall not be less than 20dB.

Ventilator with sound-insulation function. under both open and shutdown conditions,

weighting standardization sound pressure level difference of small ventilator component

shall not be less than 33dB.

7.7 Heat preservation property

Heat transfer coefficient (K) of ventilator shall not be beyond 4.0W/(m2·K)

7.8 Airtight property

Under shutdown condition, air permeation rate (q1) of unit fissure length of ventilator shall

not exceed 2.5m3 (m·h), or unit area air permeation rate(q2) not exceed 7.5 m3 (m3·h).

[Translator note. units of q1 and q2 are different]

7.9 Watertight property

Under shutdown condition, watertight property (deltaP) of ventilator shall not be less than

100Pa; under open condition, there shall be free from obvious droplet in the room.

7.10 Wind-resistance property

Win-resistance property (P3) of ventilator shall exceed 1.0kPa.

7.11 Repeated open and shutdown 3)

Switch control system of manually controlled switch shall still work normally after 4000

times of repeated open and shutdown, without any loose or tripping in components; control

system of electric switch shall still work normally after 5000 times of action.

3) When motor ventilator is equipped with both manually controlled and electric control devices, both

shall meet the requirements.

8.1 Preparation of test sample, record and test order

8.1.1 Preparation of test sample

For length ventilator, sampling is based on length of 1m; for other type of ventilators,

sampling is based on per piece; when users have special requirements, sampling is based

on actual needs. Take 4 same (they have the same maximum ventilation rate; and under

this condition, they have the same sound-insulation limit and same specifications)

ventilator test samples.

8.1.2 Record of test sample

Test sample length, width, height and projected area (if test samples are attached with rib

strip or rabbet, their projected area shall be deducted) shall be tested before sample

installation and recorded.

8.1.3 Test order

Test of Chapter 7.conduct test by taking 3 samples based on the order 7.1, 7.2, 7.3, 7.4,

7.5, 7.6, 7.7, 7.8, 7.9, 7.10; and 1 sample for 7.11.

8.2 Appearance

Visual inspection shall be done 400~500mm away from test samples under natural light.

8.3 Allowable size deviation

Use measuring tool with accuracy of 1mm to measure the height, width, diagonal, opposite

side size; use measuring tool with accuracy of 0.02mm to measure the same flatness of

adjacent component; use feeler gauge to measure the assembly clearance of adjacent

components.

8.4 Operation property

8.4.1 Manually controlled ventilator. manually pull the operating handle and arm to check

whether they are flexible or in clamping stagnation; measure the rotating force by using

tension meter at 100mm away from rotating center.

8.4.2 Electric ventilator. when actual voltage is 80% of nominal voltage and speed-control

switch is at the lowest gear, continue for 3 times, while observing whether the ventilator

can start up from any static condition.

8.5 Ventilation rate

Products inspected as qualified shall be provided with a certificate conforming to

specifications in GB/T 14436.

9.2 Exit-factory inspection

9.2.1 Inspection items

Exit-factory inspection shall be conducted after type inspection is qualified; inspection

items of exit-factory are shown in Table 4.

9.2.2 Group-batching and sampling plan

10% and not less than 4 pieces shall be sampled from the same batch, same-specification

and same-type products on a random basis.

9.2.3 Qualification determination rules...

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