1 scope
This technology is applicable to industrial
and civil building air handling equipment, sectional air conditioner and air
conditioning box installation works.
2 construction preparation
Requirements 2.1 materials and equipment:
2.1.1 installation process uses a variety
of profiles, bedding, hardware supplies the factory certificates or related
documents.
2.1.2 in addition to the above documents
should also be carried out Visual inspection, no serious damage and corrosion
and other defects.
2.1.3 flange connections using the litter
should be selected in accordance with the design requirements and meet the
requirements of fire-proof, moisture-proof, corrosion-resistant performance.
2.1.4 other installation materials used by
cannot be installed because of a quality problem affecting the quality and
effect of use.
2.1.5 windlass, carts, chains, pulleys,
rope, steel ruler, set square, adjustable wrench, pliers, screwdrivers, wire,
steel tape measure, level, wooden hammers, hammers and other tools.
2.2 operating conditions:
2.2.1 installation check before the scene,
should have plenty of space.
2.2.2 before installation clean the
installation site, and no other piping or equipment to prevent.
2.2.3 device model, device based on size
and location, the design requirements.
2.2.4 building devices out of the box the
unit tests complete with spare parts, equipment shall be valid. The data with
the device and product certificate should be completed. Imported equipment must
have a commodity inspection departments inspected the file.
2.2.5 opening inspection records.
3 operational processes
3.1 process
Sectional set in place
Equipment acceptance → check → transport → air
handling unit out of the box →
Monolithic installation
Leveling → find → quality
control
3.2 device out of the box to check:
3.2.1 with the construction and equipment
supply departments, has checked out of the box.
3.2.2 check boxes before opening the box,
box number matches the documents provided. Then check on the packaging, there
is no damage and moisture.
3.2.3 upon opening the box carefully check
the device name, specification, type conformance to design drawings. Product
specifications, certificates are included.
3.2.4 packing list and technical documents,
check host attachments, special tools are complete, surface with or without
defects, damage, corrosion, moisture, and so on.
3.2.5 open device activity panels, with
their hands moving fan there is no impeller and casing touch metal, fan shock
absorber specification parts.
3.2.6 the inspection results recorded,
involved in opening inspection responsibilities have been signed and sealed, as
evidence of the transfer of information and Of plant.
3.3 equipment transport:
3.3.1 equipment should be used when
handling the small trailer.
3.3.2 devices when lifting, equipment
lifting points, lifting when there was no lift, lifting points shall be located
in the metal base of the air on the main beam.
3.4 air conditioning unit installed on the
segment group:
Modular air conditioning unit is not
cooling, heat, water and steam for the media to feature styling products for
the combo unit, when installed according to the following steps:
The paragraphs 3.4.1 installation first
check the metal air line with the drawings, the equipment installed in the body
paragraphs, if the part is a complete non-destructive and accessories must be
complete.
3.4.2 used in the ready to install bolts,
gaskets and other materials and the necessary tools.
3.4.3 installation site must be formed,
processed steel air tank base in place (or pouring concrete piers) and
leveling.
3.4.4 when several AHU installation site,
be careful not to field is wrong, tell the difference between left-and
right-(sight downstream direction observation or according to the manufacturers
instructions). Order content-ID must match the drawings. Before installing on
the numbering of paragraphs.
3.4.5 from end of air conditioning devices,
each body carried to the base after the correction location, plus liner,
adjoining segments bolted tight and firm. Before each connection segment,
internal cleaning.
3.4.6 and section connected to the heating
section should be used in heat-resistant gaskets, surfaces or gaps between the
application of the heat exchanger heat blocking material.
3.4.7 surface heat exchanger for cooling
the air in the lower drainage should be established.
3.4.8 air handling units are installed,
connections between its various functions should be tight, the whole flat.
Check door opening flexible waterways.
3.4.9 site Assembly of the air conditioning
unit, air leakage testing should be done. Air leakage requirements shown in
table 4-28.
Table 4-28
Unit properties static pressure air leakage
rate
General air conditioning units keep 700Pa
not more than 3%
Below the class 1000 clean keep 1000 Pa is
less than 2%
Than, equal to, class 1000 clean keep 1000
Pa is less than 1%
3.5 air conditioning unit installed:
Cold source of air-conditioning unit (split
and air-cooled units as a whole):
3.5.1 split outdoor unit and air cooled
whole unit installation, surrounding space to meet the requirements of cooling
air circulation and environmental regulations.
3.5.2 installation of indoor unit is
correctly positioned, eye level, condensation water discharge flow.
3.5.3 overall unit installed in the
following order:
3.5.3.1 earnestly familiarity with drawing paper,
equipment instructions before installation, as well as relevant technical
information.
3.5.3.2 where air conditioning unit
installed must be flat, should generally be higher ground from 100 to 150mm.
3.5.3.3 air conditioning units if required
install shock absorbers should be strictly according to the design requirements
of the shock absorber type, quantity and location to install, level alignment.
3.5.3.4 the cooling water system of air
conditioning units, steam, hot water pipes and electrical power and control
circuits, installed by plumbers and electricians.
3.5.3.5 refrigerator without charge freon
for air conditioning unit should be under the guidance of senior workers or
manufacturers, charging according to product specification.
3.6 other types of equipment installed
3.6.1 effect or HEPA filter must be
installed in a clean room completed cleaning and test 12h to check out of the
box, qualifying immediately after installation.
3.6.1.1 must seal between the filter and
frame padding thickness for 6~8mm. After installing padded compression ratio
should be greater than 50%.
3.6.1.2 liquid seal, truss installed
horizontally grooved sealing liquid at least 2/3 deep within.
3.6.1.3 installations, should be consistent
with the direction of flow the arrow on the outside box, corrugated plate
corrugated vertical installation of the filter must be perpendicular to the
ground may not be reversed.
3.6. more than 1.4 when more than one
filter Assembly, according to the initial resistance of the filter size allocation,
each rated resistance and the difference of average resistance should be less
than 5%.
4 quality criteria
4.1 project:
4.1.1 air handling unit construction
connections must be tight and spray water is strictly prohibited.
Inspection method: Visual check.
4.1.2 HEPA filter must have the correct
mounting direction; composite corrugated filter in vertical installations,
corrugated sheet must be perpendicular to the ground. The connection between
filter and frame no leakage, plastic deformation, damage and leakage, and so
on.
Inspection method: observation of air
leakage test check and check records.
4.1.3 cleaning system of air, filters in
rooms after installation must ensure that the wall clean, free from dust,
grease, rust and other debris.
Inspection method: observation or white
silk cloth to check.
4.2 Basic project:
Subparagraph 4.2.1 air handling unit
installation or installation, installed smooth, smooth. Solid, no significant
gap in four weeks. Primary, secondary air Regulation valve and air control
valve flexible regulation.
Inspection method: standard and Visual
check.
4.2.2 enclosed viewing window should be
consistent with doors and frames, smooth, strong, leak-free, flexible switching
requirements, water condensation drainage tube (Groove) are clear.
Inspection method: splash and close
inspection.
4.2.3 surface heat exchanger installation
framework for smooth, firm, smooth installation. Between the heat exchanger and
heat exchangers and envelope around the gap seal.
Inspection method: lever and observe the
examination.
4.2.4 installation of the air filter should
be installed smooth, firm; filters and framework, the gap between frame and
envelope seals; filter for easy removal.
Inspection method: lever and observe the examination.
4.2.5 window air conditioner installation
should conform to the fixation, shade, rain-proof measures, condenser exhaust
air is not stopped, condensed water tray should be around the slope and the gap
closed. Around the positive horizontal even vertical and gap seals to
coordinate with the Interior appearance.
Inspection method: Visual check.
4.3 allowable deviation:
Air handling equipment installation
tolerances and testing methods should be consistent with table 4-29.
Equipment installation tolerances and
inspection methods table 4-29
Project tolerance (mm) test method
Horizontal error 1M Michael Jackson-3
cable, fluid connectors and check
1M Michael Jackson-2 hanging vertical metal
air conditioning equipment and standard inspections
5M Michael Jackson-10
5 finished product protection
5.1 air processing unit after installation,
external protection measures prior to Unicom systems, should not be damaged. To
prevent debris falling into the unit.
5.2 air conditioning unit installed after
the formal transfer of the use cases, air conditioning facilities should have a
special guard to protect. Prevent damage to the missing parts.
5.3 If the accident should immediately
report the relevant department heads, to take measures to deal with.
5.4 press factory mark, high efficiency
filters should be in vertical transport and storage in a clean room, and
moisture-proof measures.
6 quality problems to be noticed
6.1 installation of air conditioning
equipment should pay attention to quality issues as shown in table 4-30.
Installation of air conditioning equipment
should pay attention to the quality of table 4-30
Ordinals often quality control measures
1 no coordinates, elevation, stereo
enhanced sense, strictly according to the design and operational requirements
Connection between paragraphs, padding
specifications are not made as required,
Gasket leakage phenomenon
Cooling coil water line out
4 HEPA filter frame or efficient air
leakage in strict accordance with the design and operation process
7 quality records
7.1 inspection projects and inspection
record form.
7.2 entry equipment inspection records.
7.3 device engineering acceptance record.
7.4 assembling air conditioners air leakage
inspection records.
7.5 General ventilation system operation
records.
7.6 air quality inspection and assessment
of manufacturing and installation project tables.
7.7 unit project impression quality
assessment form.
7.8 acceptance record.
7.9 out of checking and cross-checking
records.
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