Project Title: Property P +2 E office (administrative)
Beneficiary:
PHASE: DTAC
Category of work: installation of heating
1. GENERAL
This paper prepared at the technical documentation for construction permit, fix the problem for a building heating system P +2 E ofice (administrative).
The heating requirements will ensure comfort, functionality and safety in accord with the law.
When adopting the technical solution has been considered requirements:
- Strength, stability and reliability
- Fire Safety
- Reliability
- Hygiene, health and environmental
2. REFERENCE DOCUMENTATION
At the project design were the following regulations, standards and reference documents:
- Architectural plans and resistance
- Plan provided by external networks beneficiary Title - Extension products factory ... .. and construction halls ... ...
- SR 1907/1-97 Calculation of heat
- SR 1907/2-97 Conventional computing interior temperatures
- Indicative I 13-94 "Standard for the design and wiring of central heating" MLPAT approved by order published in the Bulletin 07.07.1994 nr.19N in Construction volume 12/1994.
- Product catalog Romstal
- Law nr.10/1995 quality construction
- General rules of provision and fire protection approved by Order 191381/04.03.94 published in the Official Gazette, Part I. nr.132
- Regulation on the protection and occupational health in construction approved by order of 15.03.1993 MLPAT nr.9N
- And fire prevention rules approved by the order nr.20N MLPAT of 11/07/1994.
- Certificate of urbanism
3. PROPOSED SOLUTION
Hot water heating system was designed to compensate for heat loss through building elements to the outside in cold weather, in order to ensure constant interior temperatures in rooms served by the facility.
Heating heating is provided by a group of heating boiler is located in the existing platform located at the entrance. Heating temperature is 80-65 º C. This group will provide heat and hot water for household needs (the requirement of the beneficiary). For hot water boilers were fitted electric showers and sinks located on wall mounted.
The fuel used is methane gas, and consumption is 31 Nm3 / h.. The group will go into thermal heat distributor.
The distributor will be driven heat pump boiler circulation of a PP-R pipe DN 90 AL posed in the ground at 1.25m to share the property P 2.
On entering the building supply pipe will not be in OL but PP-R of the distribution and columns and tubes for connection between dispensers PEXAL and radiators.
Steel radiators will be. In the lobby two meters from the entrance pipe DN 90 will rise vertically through the floor and will be mounted to the ceiling at 3.2m share.
Main distribution will be carried further to 3.2 m in the ceiling rate, the feeding ground so the ground floor columns and floors I and II,
Distribution pipes from the distributor columns will be installed as links to distributors that the drill floor radiators. Why will dig at least 8 cm thick.
Vents will be made through automatic valves on the radiators in all rooms, except in bathrooms where the valves are manual binding.
4 Roundup CALCULATION
Background on the calculation of the heat drawn SR 1907/1-1997.
a) Calculating the temperature of te = -15 º C , Ilfov County was adopted in SR 1907/2-97.
b) Indoor temperatures were chosen according to SR 1907/2-1997.
c) Resistances to heat transfer " R " elements of construction and massive heat " m " were calculated according to SR 1907/1-1997 and STAS 6672/3-89 calculation of thermo elements of building construction
The building was considered permeable and infiltration coeficientuluide value “ i” was chosen from SR 1907/1-1997.
d) The building is located in Ilfov county.
e) Heat flow will be installed:
Q = 246.000 w
Will be provided by a group RS Mk II heat 257.8Kw
5. Installation Instructions
5.1 Mounting Requirements
Hot water heating system will be installed after completion of construction and architecture. The assembly will meet Norm I 13-1994.
After assembly plant will be tested to verify respecting Chapter 23 Norm I13-1994.
The columns will be installed in front of the wall plaster masks.
All distribution pipes must be installed in the floor, by providing a fingerprint in the concrete slab 5cm wide and 2cm deep.
Warning: if the floor is 5cm thick lines can not be installed in sapa
Connections from columns to distributors - collectors, and the dealer-collector in the radiator will be in one piece. Static heating bodies connection will run as follows :
Control valve and flow control valve on the return, automatic vent valve body (supplied with furniture fastening systems in the body hea). Adjustment can be made optional thermostatic heads. It recommends the provision of fixed joints (elbows with flange) .Thermostatic heads will not provide all the heating elements so as not to block the circulation pump.
To drain installation in the bathrooms have been fitted with portfurtun drain valve, mounted in the floor to floor traps.
Fitting radiator
Fixing support bearing construction. Radiator connection to link
Assembly will start only if the front allows.
Thus ends the structure between the head and the head of a record of teaching facilities - reception of the working allowing installation works equipment.
Assembly will start only if:
- finished floor rate is unknown.
- if the radiators have been received and can be used according to manufacturer’s requirements and project installation of radiators.
- Radiators will be installed at these minimum distances for agent water temperature to 95 ˚ C:
· 5cm - between the finished wall behind the radiator and
· 10cm- between the top of the radiator and window jamb
· 12cm- between the underside of the radiator and finished floor
· 15cm- between the radiator and side walls finished
Position the radiator to the electrical and gas and the minimum distances of these will correlate with the provisions of regulations I7-98 and I6-98.
Recessed depth netencuita building consoles and supporters will be 12 cm.
5.2. Sample Requirements
After completion of installation will make a visual inspection of the heating system to determine correct installation.
After the last cleaning (if necessary) will be subject to the heating system according to norm Q13-1994.la samples:
- Cold pressure test
Cold pressure test will be 5 bar.
It aims to check the hydraulic resistance at ambient temperature and tightness installation elements. Cold test results are recorded in minutes. Cold pressure test run inaintede finishing plant or masking elements lor.
Sample run in time with higher ambient temperature of 5 ºC. In order to carry proof cold will ensure full opening and closing of all valves control.
Before the cold sample, the installation will be washed with water.
Cold pressure test is performed with water from the water during filling incinta.In drinking water the plant will be taken to eliminate air, and raising and lowering the pressure must be done continuously and without shock.
The heating will probably be pressure before mounting position to avoid inconvenience which may occur in the final pressure test the installation.
Removing air from water filling the system is intended to make the automatic vent valves and control valves by hand to the head of column radiators.
Air pockets that may form will encourage corrosion in the heating, so required will be provided for automatic and manual vent valves for gas evacuation. Avoid complete closure of the valve to cut the radiator because the water flow of gas bubbles can be discharged through valves. (Automatic and manual).
The fact that the installation works at variable pressure expansion vessels closed due to pressure test will not accept final no water leaks in the system. (No level drop)
Check the plant behavior in cold test after putting pressure tightness and resistance by controlling all the joints, or by visual examination. Measuring pressure test will begin after at least 3 hours of putting pressure devices by reading every 10 minutes for 3 hours. Sample hot at operating temperature and pressure. Aims to check the tightness, the behavior of elements of the plant expansion - contraction and heat circulation.
Hot test will be performed before finishing, masking or plant closure elements, but only after complete closure of the building and after the sample cold. With the hot sample and will be setting facility.
Hot sample
After the water has reached the correct level in the system, its temperature rises to 50°C and maintained at that temperature variations within a 5ºC. If the installation is in circulation pumps, they will be put into operation.
After 2 hours of control is also attentive to the heating, noting hand thermometer or temperature at the upper and lower body heat. Not allowed vmai differences greater than ± 5 º C between the heating elements. Lack of uniformity of heating (if any) are corrected by adjusting valves. Heating temperature rise at nominal value (in the range of ± 5ºC) and check if water loss occurs at joints, fittings and fixtures of heating. The check is good dezaerisire the installation. Examine the whole plant to control tightness. After this examination and after cooling to ambient temperature installation, proceed to a new heating, followed by a control identical to that described above.
If no second heating installation does not have leaks and function in normal conditions, the sample is considered appropriate. After the sample, empty facility, if entry into service until danger of frost.
- Proof of efficacy
- This will be the heating system by measurements made in chambers indicated by the beneficiary.
- Proof of efficacy is the entire plant in operation, under normal operation at low outdoor air temperatures.
Proof of efficacy is to measure the air temperature, the thermometer with a sensitivity of 1/10grdC.
In parallel they air temperature and the MEASURE Also outside heat flow and return Both, verifying the Correlation of tissue parameters as quality control chart.
The rooms, measuring the temperature will be in the people with this current, a maximum height of 1m.
During the proof of efficacy for 24 hours, measurements will be made at least every hour, if not used recorders
.Proof of efficacy results will be considered satisfactory if the indoor air temperature corresponding to the specified project, with a deviation of -0.5 grdC ... 1 grdC.
6. SAFETY MEASURES
In order to ensure normal working conditions and to avoid accidents, measures were provided in accordance with legislation NRPM, general rules of occupational medicine.
During execution:
Observe protective measures against accidents in terms of making the current work, in accordance with those stipulated in the "Regulation on the protection and occupational health in construction" volume E - Installation of 1993 published in BC.5-6-7-8/1993
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