【 Weak current College 】 air conditioning project technology gives the low-down

In order to ensure that the air conditioning engineering construction quality, standard for the installation of the team, so on construction of process technology gives the low-down, strict monitoring.

First, equipment installation

1, air-conditioning host installation location should be convenient for maintenance without affecting its use, especially the heat;

2. air-conditioning host stand unity with 10 Channel steel production;

3, fan coil unit should be installed, the installation of a bevel to the next level at the end about 3000mm or under construction; sample room

4. blower fan coil pipe installation location away from the wall, from the window of 200mm 150mm, followed by pipeline from the wall 300mm;

5, every Villa of air-conditioning host and the number of fan coil must be copied correctly, and well-preserved random information;

6, handling and installation cannot damage the equipment, in particular the host shell paint, fin and fan-coil of condensate tray, Wo shell, impeller, etc.;

7, fan coil junction box, condensate pipe interface, advance water leakage connection must be in the same direction, for later inspection; fan-coil back wind pipe, duct must be back to check the holes on the drive;

8, equipment installation location to install correctly, you want to ping is;

II. wind system

1, back to the production should be consistent with the bellows, layering to good, good insulation; installation of thermal insulation material must not be broken;

2. back to the bellows and fan-coil riveting, back to the bellows must not be misrepresented as, on, twist angle;

3, flange welding should not have the leakage welding, holes, flange diagonal error than 3 mm, and smoothness of the error is less than 2MM, flange bolts and rivets-space requirements for 120MM, flange paint before removing welding slag, then brush quadratic red lead;

4. wind pipe head adopts Wo buckle, air nozzle (0.05 m) each with riveting, must play sealant, flange riveting, duct flange 6MM, and shall not be less than four edges to be consistent;

5. air supply of air duct must be set from the wind, the wind mouth to blunt edges;

6, living room air duct installation two blower coil should be consistent, air ducts and air blower plate Tube waterproof soft canvas connections, length of 200mm, single flange crimping;

7. the main bedroom air duct installation (side to side, back), the return outlet should be in the same plane;

8, sloping roof elevation over the side sent next 2800mm installed air blower plate Tube, the air install 45 degrees (angle bent) air duct;

9, duct production, you must first install the application for inspection and preservation;

3. water system

1, pp-r pipe heat shrink size must be less than 3%, the installation must conform to the manufacturer's technical requirements;

2, the pipeline through wall must be casing, De25 and casing with PUC70 De32; De40, De50 and casing with PUC110 De63; De75 and De90 used PUC133 casing;

3. pipe bracket for indoor use L30 angle, paint brush Aluminum powder paint; in outdoor L40 angle, paint brush black lacquer;

4. pipe bracket installation before playing the line spacing is less than, and in the same 800mm plane must distribute the same region should take the form of support;

5 pipes well pipe installation to coordination and cooperation between units to avoid the jagged effect;

6. pipe bracket installation location from PP-r pipe elbow is greater than, less than 300MM 150mm; pipe bracket installation to positive, not skewed;

7. pipe bracket for must and presetting holes, pipeline installation must be horizontal even vertical;

8, water pipes after installation, you must wash and pressure testing. Test pressure 1Mpa, voltage 10 minutes shall decline; to minimize the pressure, voltage 60 minutes 0.6Mpa, pressure shall not decline, Visual inspection no leakage is qualified. After passing the inspection check to thermal insulation;

9, HFCA06 above fan coil for return pipe adopt De32 tube, before the closing valve reducer (300MM or less);

Top 11, frozen water pipes must be set to automatically discharge valve and hose into the nearby air blower plate tube of condensate tray or access point by tube; frozen water pipes should be set at minimum drain valve;

12, PP-R piping hot melt connection should satisfy the following requirements:

(1) the fuser selection to fit, die head intact, working temperature to 230 degrees — 260 degrees. Setting the fuser temperature reached before operation;

(2) pipe cutting should use a dedicated pipe shears, hacksaw or pipe cutting machine, cutting the section should be removed after the burrs and Burr, pipeline of truncated surface must be perpendicular to the pipe axis;

(3) of the weld must drop pipes and fittings to connect end of dirt, guaranteed clean, dry, oil free;

(4) hot melt melting depth when control, reduce shrinkage rate. Hot-melting depth you can reference the table below:



Note: the fuser temperature is 230-260 ° c, ambient temperature is below 5 degrees, heating time should be extended to 50%

(5) welding elbow or links, you should be aware of its direction, pipe fittings and pipe line direction, auxiliary signs to identify their location;

(6) heating, should be no rotation the pipe end import heating set, insert to provide depth, at the same time, no rotation, fitting into heating head, achieve the required depth, heating time should meet the requirements；

(7) reached the heating time, immediately put the tube and pipe fittings from heating cover and heating head at the same time take down, no rotation and linear uniform provisions inserted into the joint depth formed uniform flange;

(8) the processing time, just good weld joints can also be a slight correction, but no rotation;

(9) for pipeline installation, no axial force perverted, unsuitable Calibration;

(10) for pipeline installation, not your head spout must be careful to avoid blocking debris falling into the tube;

IV condensate pipe installation

1, condensate pipe diameter to meet technical requirements, it must do interior plastering and civil construction waterproof before completion;

2, condensate pipe installation first-line (inspection), and then cut masonry tank, and then tick, buried wall depth 15MM; prefabricated panels with plate every tick Groove, not horizontal tick playing; if you want to beam or shear wall on slotting, must be reported to the consent of the owners and supervision;

3, condensate pipe installation must avoid the bathroom entrance door, door, window, etc. should be more than 200 mm of distance;

4, condensate pipe installation support spacing should be less than 800mm; exposed parts must insulation (tube); condensate pipe installation hose length should be between the 20MM — 30MM (tube and pipe mouth distance);

5 pipes, then after installation, you must pass water, irrigation, post after passing to the supervision and inspection de bulletin;

5. electrical installation

1, line pipe clamp spacing should be less than 600mm, horizontal even vertical length of the corrugated pipe cannot be greater than 500mm;

2, fan coil of cable boxes into line pipe piping must be from above;

3, wire connector must solder (prohibited online tube connector), insulating blanket and waterproof adhesive tape double bandage;

4, electric insulation must comply with the requirements;

5, blower fan coil pipe stall speed line to receive correct, cannot be confused with the zero line;

6. thermal insulation

1, pipe insulation, heat preservation tube shell and wooden ring junction must brush glue stick tape;

2. wind pipe insulation, insulation glue should brush evenly, no stomata, surfaces must be smooth, no dirt; sheet of concatenation must be in the air duct, mosaic every must brush glue;

3. insulation without peeling, cracking, damage and other phenomena, good thermal insulation tape to bonding, not falling off;

4, pipe insulation, pipe Shell cannot cross the place filled with foam;

5, pipe pressure test has been completed, should first guarantee pipe wells and water pipes pass through the site, does not affect the construction complement grey;

6, pipe insulation finishes, but also tied to a single root thin pipe winded, Visual inspection should be able to meet the requirements;

7. cooperation with the civil provisions

1, wall, floor slotted holes, must consent to the inspection;

2-line uses the powder line package, stone red pigment, ink bucket no longer used;

3. cannot scribbling on the wall, such as playing and doing some unnecessary mark;

4, if the accidents dirty enough grease, to promptly remove with sandpaper; if accidental damage to other items, to promptly repair or compensation;

5, in the wall on the hole to founder, the appropriate size, you must use the appropriate tick chisel, hammer beat directly forbidden;

6. without authorization, is strictly prohibited in shear walls and beams drilling and slotting;

7. Note on other units of product protection, not dirty wall surface, ground, does not damage the waterproof, doors and Windows, corner, Horn, and other objects;

8, the construction site must be neat and orderly, material stacking order, construction waste to clean up in a timely manner shall not be casually throw, prohibited from upstairs to the following garbage;

9, construction and civil engineering work of coordination, and do a site to the transfer;

8. the relevant provisions of the

1. when using the hammer must limit, limit size 60MM, avoid penetrated the roof, if there is a violation of a fine of $ 500 per time;

2, the construction safety: to enter the construction site must wear a helmet; aerial work must have security measures in place; on power tools (cutting machine, drilling machine, etc.) to frequently check that hand use;

3. construction site shall obey, on pain of severe punishment anywhere;

4. on-site warehouse can only live a male staff;

5. on-site warehouse must be 24-hour stay in cooking, forbidden;

6. use of the material to be considered, improve utilization, prevent the material from being stolen or damaged, the material loss control to the minimum (fixed loss less);

7, of the same type of installation must be consistent (in model room), including equipment, for the return pipe and pipe diameter, and condensate pipe diameter, and the installation location and manner to basically the same;

8, weekly Sunday 5 pm weekly, held on construction progress, solve engineering problems, schedule construction tasks;

9. confirm the progress node after must be completed, otherwise in accordance with the regulations for punishment;

10, strengthen management, strictly according to the technology gives the low-down the content and related specification construction, quality supervision and security checks to sync follows up, eliminate quality incidents and accidents;

11, all work must be on site to ensure project quality and duration to ensure theTimely high-quality complete construction tasks;