【 Weak current College 】 air conditioning and ventilation system debugging process standard

1 scope
This technology standards suitable for ventilation and empty faded by system debugging and running.
2 construction preparation
2.1 instrumentation requirements and major instrumentation tools:
2.1.1, ventilation and air conditioning system to debug the instrument should have shipped with certificates and identification documents.
2.1.2 the strict implementation of metrology, not allowed in debugging the workplace standards with no printing, card verification cycle or above and the verification of measuring instruments.
2.1.3 must understand the various commonly used test instrument construction principles and performance, strict control of their use and calibration method, according to the rules of procedure for testing.
2.1.4 the combined effect of the determination, the use of the instrument accuracy level should be higher than the level of the measured object.
2.1.5 handling and use instruments to handle with care to prevent vibration and shock, do not use the instrument, should be placed in special tool instrument boxes and moisture-proof against pollution, etc.
2.1.6 measurement temperature measuring instrument; instrument; measuring the humidity of the wind speed wind instrument; measuring instruments; other common electrical instruments, go a few tables, particle counter, sound level meter, steel tape measure, hand drill, wrench, gaizhui, g wire pliers, hammer, high stool, flashlights, radios, calculators, measuring rod.
2.2 job conditions
2.2.1 ventilation and air conditioning system must be installed, running and debugging the construction unit before, in conjunction with the comprehensive examination, all in line with the design, construction and acceptance and project quality inspection and evaluation standards for running and debugging.
2.2.2 ventilation and air-conditioning system needed for the use of water, electricity, steam and compressed air, etc., should have conditions of use, the site clean.
>2.2.3 operation before you make the following adjustment:
2.2.3.1 have running debugging scenarios, including debugging purposes requirements, time schedule, debugging projects, programs and methods, etc.;
2.2.3.2 press running debugging scenarios, prepare instruments and tools and debugging record form;
2.2.3.3 familiar with all of the ventilation and air-conditioning system design information, calculation of the state parameter, and appreciate the design intent, grasp the air duct system, cooling and heating system, electric system works;
2.2.3.4 duct system of regulating valves, fire dampers, smoke exhaust valves and a draught and back to the Tuyere valve plate, leaves should be opened for operation.
2.2.4 debugging of ventilation and air-conditioning system air flow should, before commissioning of the fan unit, equipment availability meet design requirements before debugging.
3 operation technology
3.1 debugging process procedures are as follows:
Preparations


Ventilation and air conditioning system air-conditioning automatic control system
Go debugging before the check control line check

Ventilation and air-conditioning system of the regulator and detector
Air flow tests and adjustment form body performance validation

Air conditioner equipment of automatic regulation system "
Can measurement and adjust calibration measurement instrument linkage

The combined effect of air conditioning system for the determination of

Data consolidation dictates the debug report prepared

3.2 preparations:
3.2.1 familiar air conditioning system design drawings and related technical documents, indoor and outdoor air calculation parameters, air flow and cooling load and thermal load, constant temperature accuracy requirements clarified sent (back) wind system, cooling and heating system, automatic tuning system.
3.2.2 drawing ventilation and air conditioning system schematic diagram of the perspective.
3.2.3 debugging staff in conjunction with the design, construction and construction units into the scene, finding out the air conditioning system installed where quality, identifying construction and design, which are recorded in detail, the deadline for defects when you finish making changes.
3.2.4 ready to debug the required instruments and the necessary tools to eliminate defects in the breakdown. Power, water, cold, heat source is ready, you can schedule running and debugging.
Ventilation and air conditioning system operating 3.3 before checking;
3.3.1 check fan and motor models, specifications are consistent with the design.
3.3.2 check bolts are tightened, the vibration platform is flat, pulley or coupling is alignment.
3.3.3 check bearing Department have sufficient lubricating oil, add oil type and quantity should be consistent with the provisions of the technical file.
3.3.4 check motor and grounding requirements of fan and duct grounding connection is reliable.
3.3.5 censorship fan control valve door, after locating device should be flexible, and reliable.
3.3.6 fans start to continuous operation, the operation should be not less than two hours.
3.3.7 ventilation air conditioning equipment stand-alone commissioning and duct system leakage measurement qualified before commissioning the system linkage, and not less than 8h.
3.4 ventilation system air flow measurement and adjust:
3.4.1 the project reality, rendering system single perspective, shall identify the duct size, measuring points section location, send (back to) the location of the vent, and marked with the design of air volume. Wind speed, wind section area and an area of the bounding box (Figure 4-40).

Figure 4-40
3.4.2 opening fan before the wind road and air inlet valve itself, in the full open position, three-way valves door in intermediate position (Figure 4-41) air treatment rooms in various conditioning doors also be placed in the actualoperating location. 3.4.3 on fan for air flow measurement and adjustment, the first rough measure total air flow meets the design requirements for air volume, be aware that work in favour of the following step debugging. 3.4.4 system air flow measurement and adjustment, trunk and branch pipe of the wind map 4-41
Quantity available pitot, micro-gauge instrument for testing. To send (back) wind system adjustment using "flow proportional allocation method" or "baseline" of Tuyere method of adjustment, the farthest from the system in the most unfavourable ringRoad, gradually increase the fan.
3.4.5 outlet air flow tests available thermal anemometer, impeller anemometer or go Cup anemometer, use fixed-point method or uniform mobile law measure average wind speed, calculate the amount of wind. Testing times for a period of not less than 3-5 times.
3.4.6 system air flow adjusting balance should be achieved:
3.4.6.1 outlet of air flow, ventilation, exhaust volume, back to the air of measured values and design of air volume allowed value not greater than 10%.
3.4.6.2 ventilation rate and back to the air flow in and should be approximately equal to the total of the air, or the air.
3.4.6.3 General air should be slightly larger than back to the air flow and exhaust volume.
3.4.6.4 system air flow determination including the determination of air flow and air pressure, wind measurement systems to all fans of the pressure difference before and after; system total air volume to total volume of fan or total air volume of air duct.
3.4.7 system airflow testing adjustment problems:
3.4.7.1 measuring point section location select comparison should be in the air, uniform and stable in the general election to produce local resistance after 4 to 5 times the diameter (or duct long edge size) as well as local resistance before about 1.5 ~ 2 times the diameter (or duct long edge size) on the direct air pipe segments (Figure 4-42).

Figure 4-42
3.4.7.2 in rectangular duct inner determination of average wind speed, wind pipe measuring section divided several equivalent of small cross section make it as close as possible to that of a square; in circular air ducts in the determination of average wind speed, according to pipe diameter size, the section is divided into several concentric rings of equal size, each ring should measure four points.
3.4.7.3 not regulating valve of the air channel, if you want to adjust the air flow in the duct flange Department temporarily adjust with the interposer board, better air flow adjustment, the Panel to the left in which no leakage and sealed.
3.5 air-conditioner equipment performance measurement and tuning
3.5.1 sprinkling of determination and washers; determination of the thermal characteristics should be in the summer or near summer outdoor calculation parameters conditions, its cooling capacity meets the design requirements.
3.5.2 filter resistance determination, cooling coil resistance determination, cooling and heating capacity of determination, should calculate the resistance value and the value of the lost heat air and absorb the heat value meets the design requirements.
3.5.3 the determination process, ensure water supply, cooling, heating source, well documented, and design data to check whether there are discrepancies, such as when you should have access.
3.6 air-conditioning automatic control system control line check:
3.6.1 Verify sensitive components, adjust the instrument or measuring instrument and regulation implementing agencies of the model, specification and installation of parts requested with design drawings.
3.6.2 according to wiring drawing, on the control panel under Terminal wiring (or over).
3.6.3 under control schematics and wiring diagrams, plate, on the tray on terminal connection.
3.6.4 on automatic adjustment system of interlocking, signals, long-range detection and control equipment and adjust the link check is correctand meets the design requirements.
3.6.5 sensitive components and measuring component installation locations, should meet the following requirements:
3.6.5.1 requires control of the whole room, should be placed on local sources of heat are not affected by the impact of regional; local area requirements strictly, should be placed in the critical location; room temperature components should be placed in the air circulation.
3.6.5.2 in air duct, the wind should be placed in the stable segment Center.
3.6.5.3 "dew point" temperature-sensitive components and measuring element should be placed in the retaining plate representative location and avoid secondary air return. Should not be affected by a radiant heat, vibration, or water droplets of direct effect.
3.7 regulator and Instrumentation Calibration unit performance:
3.7.1 sensitive element of performance testing, according to the control system of the regulator or the instrumentation required indexing number must match that should scale error checksum dynamic performance verification, design shall meet the accuracy requirements.
3.7.2 regulation instruments and detection instruments, should be the scale properties verification, regulation of verification and the actions and adjustments, the design shall meet the accuracy requirements.
3.7.3 control valve and other implementing bodies regulating performance, full-trip distance, total travel time measurement, adjustment of the limit switch location, the full stroke of the interval, the design shall meet the accuracy requirements.
3.8 automatic regulation system and instrumentation linkage validation:
3.8.1 automatic adjustment system, without prior formal input linkage, simulation test should be carried out to verify the correct operation of the system, meets the design requirements, and correct, you can run into the automatic adjustment.
3.8.2 automatic adjustment system put into operation, you should identify the impact system performance factors, for normal system operation results of analysis, and determine whether or not the desired effect.
3.8.3 automatic adjustment system run adjustment of every link, so that the air conditioning system of the "dew point", the second heater and room temperature of the control point to keep the air parameters, in line with the design of precision requirements.
The combined effect of 3.9 air conditioning system for the determination of the sub-items debugging is complete, run the determination system linkage indicators meets the design and production process requirements, if does not meet the requirements of the measurement for further adjustments.
3.9.1 OK after air conditioner air parameters after treatment and the air conditioning room workspace air parameters.
3.9.2 testing the effect of automatic regulation system, various regulatory element equipment examination of a long time, the system is safe and reliable operation.
3.9.3 the auto tuning system put into operation conditions, determine the air conditioning room work area may be maintained given air parameters allow fluctuation range and stability.
3.9.4 air-conditioning system continuous operation time, the General comfort of air conditioning systems shall not be less than the constant temperature accuracy in 8h; ±1 ° c, in 8 ~ 12h; constant temperature accuracy ± 0.5° C, 12 ~ 24h; constant temperature accuracy ± 0.1 ~ 0.2 ° c, 24 ~ 36h.
3.9.5 air conditioning system with comprehensive production load efficiency test and adjust the construction unit responsible for the construction and design units meet.
Prepare commissioning documentation 3.10 debug reports.
After adjusting for the determination and a lot of original data calculation and consolidation, should include the following:
3.10.1 ventilation or air conditioning engineering survey.
3.10.2 electrical equipment and automatic control system equipment of monomer test and test, signal, interlock device test and adjust the data.
3.10.3 air conditioning performance test results.
3.10.4 system air flow adjustment results.
3.10.5 airflow testing results.
3.10.6 the automatic adjustment system tuning parameters.
3.10.7 the combined effect of test results.
3.10.8 on air conditioning system to make a conclusive evaluation and analysis.
4 quality standards
Total air volume measurement system 4.1, air pressure and wind speed, measured total air volume value compared with the design values, error values should not be greater than 10%.
4.2 duct system leakage rate should meet the design requirements or should not be greater than 10%.
4.3 system and the outlet of the air flow must be adjusted to achieve balance, the outlet air flow measured values and design value deviation should not be greater than 15%.
4.4 clean system HEPA filter and HEPA filter and frame connection of seepage rates must meet the design requirements.
4.5 no load after adjusting for the joint operation of the test, you should make the air parameters remain in design for the given scope.
4.6 fan to the suction side air volume and press out the average end-to-air and fan the difference between the before and after the air flow should not be greater than 5%.
5 product protection
5.1 ventilation and air conditioning room doors, Windows must be rigorous, should be set by hand on duty, non-staff is strictly prohibited to work you need to enter, should be determined by the Security Department issued a work permit before entering pass.
5.2 fan and air conditioning equipment power switch on, off, should be combined with electrical operation, adhere to the workplace.
5.3 system airflow testing adjustment should not be damaged duct insulation. Debugging is complete, you should be measuring points section of insulation repair, test hole should be plugging, valve seat, good marks to prevent the change.
5.4 automatically regulating system of self-control instrument components,control panel box, should make special protective measures to guard against electrical automation components are missing and damaged.
5.5 air-conditioning system when finished all determination, InCharge handover procedures, enabled by the use of operating units, is responsible for the air conditioning system of finished product protection.
6 it should be noted that the quality of the
6.1 ventilation and air-conditioning system debugging after problems and solutions, see table 4-44.
System debugging of problems and solutions tables 4-44
Serial number problems cause analysis solutions
1 the actual air flow too large system resistance is small adjustable fan plate or valve, increase resistance
There is a problem with the lower fan fan speed, or replace the fan
2 actual air flow too small system resistance put most of the large side segment size, improved some part, check the duct or device has no plug
There is a problem with the fan drive belt tightening, improve fan or fan speed
Air leakage shutoff Yan flange joints, manholes, check valve or other existing leak
3 excessive air speed of air flow speed is too large, too much air, air distribution is not reasonable to big air area, reducing Tuyere air, change the type or the appropriate airflow bezel
4 noise exceeding the prescribed air blower, pump noise, air duct, the wind speed bias caused by partial part, muffler quality is not good to balance, blower fan and pump in isolation; instead, small fan speed; zoom speed oversize duct dimensions; improved local part; in the air duct to attach muffler materials in
7 quality records
7.1 preflight records.
7.2 smoke (wind) road inspection records.
7.3 field assembled filter, air conditioner air leakage testing records.
7.4 duct leakage test records.
Indoor air in each room 7.5 measurement data table.
7.6 network air balance sheet.
Adjusting the air-conditioning system test 7.7.
7.8 general ventilation system on the running record.
7.9 refrigeration unit test records.
7.10 equipment installation engineering unit commissioning records.
7.11 plumbing system of ventilation and air-conditioning engineering equipment running test record sheet.