Énergie Transfert Thermique. Installation. instructions

Transcription

1 Énergie Transfert Thermique Installation

2 Energie Transfert Thermique Contents A. Equipment performance... 3 B. Receipt... 3 C. Handling... 3 D. Storage...13 E. Recommendation: infl uence of water composition on resistance to corrosion...14 F. Installation...15 G. Connections...17 H. Safety precautions...23 I. Commissioning...27 Appendix: CC Module...28 Information contained in this document has been prepared by qualifi ed ETT specialists. We are doing our best to ensure its completeness and accuracy but it does not constitute a guarantee. This information is given in good faith, any use of the equipment not in accordance with the and warnings is done at the user's own risk. 2

3 A. Equipment performance The validity of the guarantee is conditional upon strict compliance with presented in this document. Proper operation and maintenance: > maintains units performance; > extends equipment service life; > reduces the risk of unit failure; > allows energy costs management; > ensures regulatory compliance (compulsory checks based on local regulations). ETT Services is here to help you get the most out of your installation. 33 (0) Contact your local ETT Services adviser. B. Receipt Each unit is checked and tested at the factory, prior to shipment, and a test certifi cate is issued. Unless otherwise requested in the project specifi cations, units are delivered fully assembled and charged with pressurised refrigerant. Unless otherwise specifi ed, units are delivered without packaging. > At arrival on site, check the unit for transport damage. > If you detect or suspect any damage, please note any necessary reservations on the transport document. Confi rm your reservations in a registered letter within 24 hours and inform your sales contact person. > Remove the adhesive tape used to prevent doors from opening during transport. > If necessary, you will fi nd your access key fi xed to the technical section ventilation grid or to the handle. A spare key is also fi xed to the document holder, next to the electrical board. > Make sure that all unassembled components are included (refer to the accessories checklist). > For handling and assembling, refer to the installation located in the document holder next to the electrical cabinet. C. Handling Use the supplied lifting lugs to lift and transport the unit using a forklift or a crane. When using a crane, use slings or nylon webbing and shackles to handle the unit. Extend with chain slings if necessary. If you use short slings, always use a lifting beam to avoid damaging the roof or scratching the casing. Lifting loads: for more information about weight distribution, please contact the project coordinator at the following address: be.projet@ett.fr 3

4 1/ General information 1.1/ Handling with a crane > Units are equipped with lifting lugs on casing (on the lower part). > The slings minimum length must be twice the unit width plus the unit height (see example below). > Slowly pull the chains or slings taut until the unit starts moving. > Take the unit to the installation area. 1.1-a/ Special for roof curbs: Roof curbs are also equipped with lifting lugs, except for connection roof curbs. In that case, slings can be attached to the supply air and return air frames. 1.1-b/ Special for EFFI units: Example: minimum L = (2 x A) B A B! Caution: EFFI units have an offset centre of gravity. In order to keep the unit levelled during handling, slings must be shorter on the external section side. C D Sling to be shortened Example: for series 3 (EFFI 323 to 333), the sling D must be shortened by 35 cm. 1.2/ Handling with a forklift Place blocks under the frame in order to slide the forks under the unit. To place the blocks, lift one side of the unit with the forks extremities on the U-profi le of the unit frame. 1.3/ Units delivered in several blocks or units oversized for road transport Example: D = C - 35 cm Some units are delivered with lifting lugs unassembled. For assembly, please refer to paragraph Assembling/Disassembling the lifting lugs, p. 12. In some cases, the main power switch handle may be removed and stored in the technical section to avoid damage during handling. Reassemble the handle once the unit is installed. Slowly pull the chains or slings taut until the unit starts moving. Take the unit to the installation area. 4

5 2/ Installing a unit on standard roof curb 2.1/ Installing a connection roof curb 2.1-a/ Equipment required: > textile slings > a level > a pair of fl at wrenches, 18 and/or 19 mm (or a cordless screwdriver) > a mallet > a cordless drill with a 12 mm drill 2.1-b/ Handling > Attach the slings and/or nylon webbing to the supply air and return air frames. > Install the roof curb on the binding joist (angles turned outwards). > Level the 4 sides of the roof curb. > Adjust manually or using a mallet if necessary. 5

6 > Hold the locknuts in position and tighten the bolts on the outside. > Back-drill the 4 sides of the roof curb to secure fastening. > Insert all the bolts (found in a plastic bag) in the holes. > The roof curb is now installed; ready for insulation, waterproofi ng membrane application and unit installation. 6

7 2.2/ Installing a unit on a standard connection roof curb Coat the support surface of the roof curb with polyurethane sealant before laying the unit on the roof curb. Once the unit is laid, fi x it to the roof curb in the four angles using the fi xing lugs supplied in the kit. The kit includes the sealant, lugs and fasteners. It may be found in a referenced box in the technical section of the unit. (zoom x5) UNIT FRAME CONNECTION ROOF CURB FIXING DELIVERED WITH THE UNIT CONNECTION ROOF CURB FIXING DELIVERED WITH THE ROOF CURB 4 FIXINGS PER UNIT UNIT FRAME CONNECTION ROOF CURB FIXING DELIVERED WITH THE UNIT (TPP70201) 7

8 2.3/ Installing a unit (with U profile frame) on an adaptation roof curb Coat the support surface of the roof curb with polyurethane sealant before laying the unit on the roof curb. Once the unit is laid, fi x it to the roof curb in the four angles using the fi xing lugs supplied in the kit. The kit includes the sealant, lugs and fasteners. It may be found in a referenced box in the technical section of the unit. The installer shall make sure the adaptation roof curb is properly fi xed to the existing roof curb. The installer is also responsible for considering the structural implications of potential excess weight for the building. UNIT FRAME ROOF CURB FIXINGS (TPP70203) SUPPLIED WITH THE UNIT UNIT FRAME U-SHAPED LIFTING LUGS WELDED TO THE ROOF CURB (VPP85075) ROOF CURB FIXINGS (TPP70203) SUPPLIED WITH THE UNIT U-SHAPED LIFTING LUGS WELDED TO THE ROOF CURB (VPP85075) M6 INSERT SCREW M6 LOCK WASHER (SUPPLIED BY ETT) 8

9 2.4/ Installing an EFFI R unit (with bent sheet metal frame) on an adaptation roof curb Coat the support surface of the roof curb with polyurethane sealant before laying the unit on the roof curb. Once the unit is laid, fi x it to the roof curb in the four angles using the fi xing lugs supplied in the kit. The kit includes the sealant, lugs and fasteners. It may be found in a referenced box in the technical section of the unit. The installer shall make sure the adaptation roof curb is properly fi xed to the existing roof curb. The installer is also responsible for considering the structural implications of potential excess weight for the building. UNIT FRAME ROOF CURB FIXINGS (TPP70203) SUPPLIED WITH THE UNIT UNIT FRAME U-SHAPED FIXINGS WELDED TO THE UNIT FRAME (TPP40204) LIFTING LUGS (VPP85075) U-SHAPED LIFTING LUGS WELDED TO THE ROOF CURB (VPP85075) ROOF CURB FIXINGS (TPP70203) SUPPLIED WITH THE UNIT M6 INSERT U-SHAPED FIXINGS WELDED TO THE UNIT FRAME (TPP40204) UNIT U-SHAPED FIXING (TPP70204) U-SHAPED LIFTING LUGS WELDED TO THE ROOF CURB (VPP85075) SCREW M6 LOCK WASHER (SUPPLIED BY ETT) 9

10 2.5/ Installing an EFFI R unit (with U profile frame) on an adaptation roof curb Coat the support surface of the roof curb with polyurethane sealant before laying the unit on the roof curb. Once the unit is laid, fi x it to the roof curb in the four angles using the fi xing lugs supplied in the kit. The kit includes the sealant, lugs and fasteners. It may be found in a referenced box in the technical section of the unit. The installer shall make sure the adaptation roof curb is properly fi xed to the existing roof curb. The installer is also responsible for considering the structural implications of potential excess weight for the building. UNIT FRAME CONNECTION ROOF CURB FIXING DELIVERED WITH THE UNIT TIGHTENING AXIS CONNECTION ROOF CURB FIXING DELIVERED WITH THE ROOF CURB 10

11 3/ Installing a unit on ventilated roof curb Once the unit is laid on the roof curb, fi x the roof curb feet to the unit frame. Assembly screws may be found in one of the pipe sleeves of the roof curb. H 200 A B 4/ Installing a unit on a frame ETT units may be installed on a customer-supplied frame. In that case, the unit may be laid directly on the frame. It is recommended to bolt the unit to the frame or to fi x it with a beam clamp system. If requested, holes may be pre-drilled in the factory where needed. For some applications (cinemas, theatres, etc.), antivibration pads or mounts may be needed to reduce structure-borne noise. Refer to a specialised engineering offi ce for anti-vibration mounts selection. If requested, holes may be pre-drilled in the factory for anti-vibration mounts assembly. 5/ Mounting a unit on feet Before defi nitive installation, lift the unit and screw the feet to the frame. Feet and assembly screws may be found in separate identifi ed boxes in one of the sections of the unit (refer to the checklist of accessories delivered with the unit). 11

12 6/ Assembling a unit delivered in several blocks For units delivered in several blocks, assembly screws and polyurethane sealant may be found in a referenced box in the technical section. Coat the support surfaces with sealant (see drawing), join both elements and bolt them together. Use a cover strip to protect the assembly. COVER STRIP CONTINUOUS SEALANT JOINT 7/ Mounting the cowls Cowls are delivered in three parts, which may be found inside the unit (refer to the checklist). Polyurethane sealant and rivets may be found in a referenced box in the technical section of the unit. GROOVE Procedure: Assemble the side panels (1) with the defl ector (2) using rivets. Apply sealant into the groove. Coat a cowl part with sealant. Rivet the cowl to the unit. Apply a fi nishing joint in the cowl grooves. Smooth the joint. 8/ Assembling/Disassembling the lifting lugs Some units are delivered with lifting lugs unassembled to facilitate transport. The lifting lugs and assembly screws may be found in a referenced box inside the unit (refer to the checklist). It is recommended to remove the lifting lugs once the unit is definitively installed to avoid corrosion. For units installed on roof curbs, reinsert the screws and apply polyurethane sealant on the head. 12

13 9/ Disassembling the moving part holders To avoid transport damage, some components such as the fans mounted on anti-vibration mounts are equipped with holders to hold them in position during transport. Holders are easy to recognize through their red colouration. They must be removed before unit commissioning. 10/ Mounting the warm air heaters (non atmospheric) In the case of units equipped with a warm air heater with a capacity of 50 kw or higher, the burner, the smoke box, the burner cowl and the fl ue are delivered unassembled to facilitate transport. BURNER WARM AIR HEATER FLUE Mounting the burner Refer to the manufacturer's mounting in the document holder. Mounting the smoke box Install the smoke box on the warm air heater using the supplied screws (available on the smoke box). Mounting the flue Fit the fl ue into the collar located on the smoke box. Long fl ues shall also be attached to the roof. Mounting the burner cowl Rivet the burner cowl stainless steel hinge to the unit frame. Rivets are supplied with the fresh air cowls rivets. BURNER COWL SMOKE BOX Nota: Large cowls shall be attached with screws/inserts. D. Storage It is recommended to inspect regularly the unit during storage. Some components require certain precautions in case of prolonged storage (more than six months). For instance, electric motors and fans shall be rotated manually to prevent stuck bearings. Do not store the equipment at temperatures above 60 C. The unit must be stored in a safe place to avoid intentional or accidental damage. 13

14 E. Recommendation: influence of water composition on resistance to corrosion The resistance to corrosion of copper and stainless steel in water exchangers depends on a number of chemical factors. The table below gives an overview of the corrosion resistance in water of AISI 316 type stainless steel and pure copper (99.9%). However, it is important to keep in mind that corrosion is actually a very complex process that can be infl uenced by many different factors and their combination. To avoid any risk of corrosion, the customer must provide water of suffi cient quality (see table below). If not, ETT will not be liable for any corrosion-related damage. Explanations: : Good resistance under normal conditions of use 0: Corrosion can be a problem, especially if several factors are rated 0 -: Use is not recommended Elements present in water Concentration (mg/l or ppm) AISI 316 COPPER Alkalinity (HCO 3 ) Sulphate (1) (SO 42 -) <70 70 to 300 <300 <70 70 to 300 <300 >1.0 HCO 3 -/ SO 42 - <1.0 < 10 µs/cm Electrical conductivity 10 to 500 µs/cm > 500 µs/cm <6.0 ph (2) 6.0 to to 9.0 >9.0 <2 Ammonia (NH 3 ) 2 to 20 >20 <300 Chlorides (CI-)(see table below) >300 <1 Free chlorides (CI 2 ) 1 to 5 >5 <0.05 Hydrogen sulphide (H 2 S) >0.05 <5 Carbon dioxides (CO 2 ) 5 to 20 >20 Total hardness ( dh) 4.0 to 8.5 Nitrate (1) (NO 3 ) Iron (3) (Fe) Aluminium (Al) Manganese (3) (Mn) <100 >100 <0.2 >0.2 <0.2 >0.2 <0.1 > / 0 0 / 0 0 / 0 / / / 0 0 / - 0 /

15 (1) Sulphates and nitrates act as inhibitors for the pitting corrosion caused by chlorine in ph-neutral environments. (2) Usually, a low ph value (below 6) increases the risk of corrosion whereas a high ph value (above 7.5) decreases the risk of corrosion. (3) Fe 3 and Mn 4 are strong oxidizing agents that can increase the risk of localized corrosion on stainless steels. If O 2 is above 150 ppm, the risk of scaling is higher. Chlorine content Maximum temperature 60 C 80 C 120 C 130 C = 10 ppm AISI 304 AISI 304 AISI 304 AISI 316 = 25 ppm AISI 304 AISI 304 AISI 316 AISI 316 = 50 ppm AISI 304 AISI 316 AISI 316 TI = 80 ppm AISI 316 AISI 316 AISI 316 TI = 150 ppm AISI 316 AISI 316 TI TI = 300 ppm AISI 316 TI TI TI >10 ppm TI TI TI TI F. Installation The installation area or the feet must be levelled and sturdy enough to bear the weight of the unit. For roof top units in particular, the installation area must be horizontal, it must not follow the roof slope. A tolerance of plus or minus 1 % is allowed to avoid water accumulation in the condensate drain pans and to ensure a correct compressors lubrication. If the installation support is not fl at, use shims to level the unit (doors should close properly). Provide 2 m clearance in front of the exchanger and 1 m clearance around the unit to facilitate servicing and maintenance. If the unit is equipped with an horizontal exchanger, provide 500 mm clearance (minimum) below the equipment for air inlet and provide 2 m clearance (minimum) above the unit. 15

16 Roof curb installation principle Unit frame 100 Sealant gasket between the frame and the roof curb on the periphery Outer insulation shall be included in the waterproofing package (not supplied by ETT) min. Nota: One (for connection roof curb) or two (for ventilated roof curb) optional cover sheets can be added to protect the building from the weather during the time between roof curb laying and unit laying. Roof curbs are intended for steel decks up to 145 mm high and insulation up to 200 mm high (i.e. max. H = 345 mm). Connection roof curb Optional: side insulation Waterproofing membrane Insulation H 600 (or 650 according to the unit) Steel deck Binding joist Nota: Standard roof curb height is 500 mm. According to the roof slope, make sure the dimension H (insulation steel deck) allows space for minimum 150 mm of waterproofing membrane. 16

17 G. Connections 1/ Water pipes 1.1/ Condensates evacuation For condensates evacuation connection, allow separate evacuation through a fitting on the unit and give the pipework a slope of 1 cm per metre minimum. 1.2/ Auxiliary coil Concerning chilled water or hot water auxiliary coil, respect pipelines inlets and outlets and lag the pipes. To ensure satisfactory operation of the piping network outside of the unit, we recommend the following equipment: Demountable fittings to facilitate circuit disassembly. Filters prevent foreign matter from entering the circuits and protect the valves or the pump. Thermometers allow water inlet and outlet temperatures monitoring. Stop valves to isolate a circuit for maintenance operations. Pressure gauges to display water inlet and outlet pressures and to check water fl ow rate. Stop valves must be installed between the pressure gauges and the circuits. If the unit is exposed to temperatures below 0 C, install electric heaters on all water pipes subject to frost. Install drain valves at the lowest points and air vents (manual or automatic) at the highest points of the piping. Nota: Do not leave water in the exchangers during installation if the equipment is exposed to frost. Otherwise, the guarantee on the exchangers will be void. 1.3/ PAC R/O and PAC O/O units When dealing with PAC R/O and PAC O/O units, respect the pipeline inlets and outlets and lag the pipes. To ensure satisfactory operation of the piping network outside of the unit, we recommend the following equipment: Filters prevent foreign matter from entering the circuits and protect the valves or the pump. Thermometers allow water inlet and outlet temperatures monitoring. Stop valves to isolate a circuit for maintenance operations. Regulating valves to effectively adapt the water systems to the requested fl ow rate. Pressure gauges to display water inlet and outlet pressures and to check water fl ow rate. Stop valves must be installed between the pressure gauges and the circuits. If the unit is exposed to temperatures below 0 C, install electric heaters on all water pipes subject to frost. Install drain valves at the lowest points and air vents (manual or automatic) at the highest points of the piping. Nota: Do not leave water in the exchangers during installation if the equipment is exposed to frost. Otherwise, the guarantee on the exchangers will be void. 17

18 2/ Siphons Most of our units include external rubber siphons delivered in a box. The siphons are designed to operate with low pressure of down to 1000 Pa maximum in the corresponding unit section. In case of lower pressure, additional and bigger siphons are required (to be supplied by the installer). Please take into account the siphons for unit installation. All rubber siphons can be connected to a single PVC collector if necessary (H ) MIN. HEIGHT BELOW UNIT FRAME SECTION 40 Ø 22 EXT Frame channel U 80 U 100 U 125 U 140 U 160 U 200 Min. height (H) (H (A) Header PVCb d40 (to be supplied by the installer) Minimum height below the unit = Frame section 3/ Electrical connections 3.1/ Power supply Electrical connections are usually below the unit or the roof curb, in the axis of the main power switch. For electrical supply location, refer to the technical documentation or to the unit detailed drawing. The size of the electrical cable shall be determined according to the information provided in the commercial offer and confi rmed in the project specifi cations. ETT does not select the type of wire to use, as the wire section depends on the installation length and type according to the low voltage electrical board connection. The installer shall make this calculation. Power supply specifi cation must comply with the specifi cations of the wiring diagrams delivered with the unit. Cable type and cross-section suitable for connection to the main power switch are indicated on the wiring diagrams. Do not use aluminium unless specifi ed. Unless otherwise requested in the order, wiring is designed for 400V 3-phase power supply, with insulated earth, without neutral (TT system according to French standard NF C , set on the day of delivery). 18

19 If the earthing scheme is different, ETT shall not be responsible for bringing it into compliance. All the wiring performed on site must comply with applicable regulations (appropriate wire cross-section to avoid line voltage drops or overheating). Our technician will control phase sequence during commissioning. In case of wrong phase sequence, any damage to the unit will not be covered by the guarantee. Our units are not protected against the risks of lightning strike. If necessary, it is the responsibility of the installer or the client to perform a lightning risk assessment (LRA). If the site is subject to a peak load reduction agreement, it may disrupt equipment operation (risk of controller or drives fault). We can propose a technical solution to handle peak load reduction without affecting equipment operation. Caution:! Operation with a non-compliant supply voltage, or with an excessive phase unbalance (5% maximum), is considered improper and voids the guarantee. 3.2/ Probes connection 3.2-a/ Temperature probe The temperature probe is installed on return air side. Please note that the value indicated can vary depending on probe location. For more representative results, do not install them: > Close to heat sources (spotlight, cooking appliances, glass wall, fl ues) > In draft zones (close to entrance, stockrooms, openings) > In dead zones (behind shelving, in a corner) > Close to crowded areas (checkout, fi tting rooms) For accurate measurements: > Do not install the probes in the axis of the duct used for their wiring to avoid false air fl ow. > Do not install control cables and power cables in the same duct (risk of electromagnetic interference). 19

20 3.2-b/ CO 2 probe Place the rear plate vertically on the wall, 1.5 metres above the floor. Install the system away from windows, air grilles and other sources of in-draught. For electrical connection, refer to wiring diagrams. Caution:! Warning: Improper electrical connection of the CO 2 probe may destroy the sensor Room probe: 1 shielded pair wire, 2 x 0.75 mm 2 LIY-CY (maxi. length 100 lm) 2 CO 2 probe: 2 shielded pairs wire, 4 x 0.75 mm 2 LIY-CY (max. length 100 lm) 3 Humidity probe: 2 shielded pairs wire, 4 x 0.75 mm 2 LIY-CY (max. length 100 lm) (Optional) 20

21 3.3/ Connections for units delivered in several blocks Units delivered in several blocks (up to 3 blocks) are wired at the factory with quick connectors for power and control connection (see illustrations below) to facilitate on-site connection by the installer. All connectors are labelled. For units delivered in more than 3 blocks, electrical wires are numbered to facilitate on-site connection. Power connectors Control connectors 21

22 3.4/ Power connections using copper/aluminium terminal blocks As an option, the units can be equipped with terminal blocks for power connection using non-copper cables (mainly aluminium cables) of different diameters. Aluminium cables dimensions are not usually compatible with the dimensions of the power switch. In addition, there is a risk of corrosion due to the different materials. Such connections require particular precautions, refer to the manufacturer's. In most cases, proceed as follows. Recommended Four clamps Aluminium cable Connection block One electrical contact point Electric current Prohibited Two clamps Aluminium cable Connection block Two clamps and four electrical contact points Electric current 4/ Ducts > Respect inlet and outlet air sections on the unit. > Ensure air tightness between duct segments to limit pressure drop. > Prevent foreign matter from entering the network (tools, rags, etc.). 22

23 H. Safety precautions 1/ General Equipment installation, commissioning and servicing involves several potential hazards: high pressure, high temperature, rotating parts (motorised fan), electrical components, work at a height (rooftop, elevated structures, etc.). Only qualified and experienced installers and maintenance mechanics are authorised to install, commission and maintain such equipment. Routine maintenance operations, such as coils and fi lters cleaning, or fi lter replacement, may be performed by non-specialised staff. All other maintenance operations must be performed by qualifi ed staff. Follow all precautions outlined in the documentation,, labels and nameplates and observe all relevant safety precautions: > Respect all safety. > Wear safety glasses and work gloves. > Wear a mask for cleaning or replacing fi lters. > Handle, lift and install heavy equipment very carefully. > Follow the special precautions when working at a height (on the top the unit). Walk only on panel junctions to avoid possible deformation, of propellers ferrules for example. Caution:! Make sure that the power supply is turned off before any maintenance or repair operation to avoid electric shock and prevent risk of injury from moving parts. Make sure that the power supply is turned off on the main switch before opening the door of the ventilation section containing the fan, the motor and the transmission. Their operation is subject to the control, so they might start at any time. 2/ Instructions concerning refrigerant fluid handling and associated risks (according to Westfalen documentation) 2.1/ Important information Refrigerants R-134A, R407C and R-410A are liquefi ed hydrofl uorocarbons (HFCs) under pressure. As their boiling point is low, they are extremely volatile and cool down very quickly in case of evaporation. As steams are heavier than air, insuffi cient ventilation can create a strong concentration near the ground. All the refrigerants mentioned above have low toxicity. Maximum acceptable concentration (MAC) level is 1000 ppm according to the manufacturers. Very high concentration levels may cause dangerous arrhythmias and suffocations due to the lack of oxygen. The HFCs mentioned above are not fl ammable under normal conditions of pressure and temperature. However, they are fl ammable when mixed with air under high pressure. Such conditions must imperatively be avoided. Thermal decomposition (when exposed to an open fl ame for example) results in the formation of toxic and corrosive vapours such as hydrogen fl uoride. The refrigerants mentioned above are well-known substances and do not present any risk for human health or the environment when properly handled. However, it is important to adopt a responsible attitude when in contact with refrigerants. The following guidelines should be of help. 2.2/ Individual protection As for any operation that involves consumable materials handling, hygiene rules must be respected when handling refrigerant. Wear appropriate protective clothings, protective gloves and glasses or mask to avoid skin or eye contact. Spatters or droplets sprays can cause frostbite and eye damage. 23

24 Ensure good ventilation of the working area to avoid inhaling high vapours concentration levels. Smoking and alcohol consumption are prohibited while working. Avoid exposing refrigerants to an open fl ame to prevent the formation of toxic decomposition products. Consequently, all welding and brazing activities must only be performed after all trace of refrigerant has been removed from the specifi c part. Good ventilation is required. In case of emergency work in high refrigerant concentration levels, self-contained breathing equipment is mandatory. 2.3/ Technical room safety Constantly monitor the concentration of refrigerant in room air to make sure that exposure limit values are respected. Electronic detectors are available through specialised distributors. With good ventilation/extraction, limit values are easily respected. Refrigerant discharge pollutes the environment and generates unnecessary costs. Also, it is important to check equipment tightness regularly and to repair any detected leakage immediately. 2.4/ Precautions for handling Liquid refrigerant transfer may create electrostatic charges. Provide earthing to prevent electrostatic charge build-up It is recommended to wear insulated gloves when transferring liquefi ed gas, as very cold gas may be released. 2.5/ Refrigerant safety These safety measures have been in place for a long time in the refrigeration industry, without any extra cost. When properly handled and used, the non-toxic and non-fl ammable refrigerants mentioned above offer optimal safety and environmental friendliness. 2.6/ Fire emergency procedure The fi re fi ghting procedure depends on the environment. Refrigerant cylinders may burst as a result of overheating. Cool them down using a water jet, while wearing a self-contained breathing equipment and full protective clothing. 2.7/ Emergency first aid procedure Handling precautions provide reliable protection against health hazards. However, if an emergency occurs, stay calm and act cautiously. Proceed as explained below and seek medical advice. IF INHALED: Remove person to fresh air and keep him/her warm and let him/her rest. Apply artifi cial respiration if breathing becomes irregular or stops. In case of cardiac arrest, proceed with cardiac massage. Contact with the skin: defrost the concerned places with water and rinse abundantly. Remove all impregnated clothing. Caution:! Caution! Frostbite may cause clothing to stick to the skin. IF IN EYES: Rinse immediately and thoroughly for at least 10 minutes using clear water or an eye-cleaning solution. IF SWALLOWED: Do NOT induce vomiting. If the person is conscious, rinse mouth with water and give one glass of water. Medical advice: Administer symptomatic treatment and additional care as indicated. Do not administer ephedrine or adrenaline products, which may cause cardiac arrhythmia, and even cardiac arrest. 24

25 3/ Instructions concerning propane (R290) handling and associated risks 3.1/ Important information Propane is a natural gas liquefi ed under pressure. As its boiling point is low, it is extremely volatile and cools down very quickly in case of evaporation. As steams are heavier than air, insuffi cient ventilation can create a strong concentration near the ground. Explosion risks occur when the concentration of propane in room air lies between 2.4% and 9.4%. These values correspond to the lower and upper explosive limits. Manufacturers recommend a maximum acceptable concentration of 20% of the lower explosive limit (LEL), i.e. 0.48% of propane in room air. Concentration levels above the upper explosive limit (UEL) may cause dangerous arrhythmias and suffocations due to lack of oxygen. 3.2/ Individual protection As for any operation that involves consumable materials handling, hygiene rules must be respected when handling propane. Depending on the situation, you should wear: > appropriate protective clothing > protective gloves > protective glasses or mask to avoid skin or eye contact. Spatters or droplet sprays can cause frostbite and eye damage. Smoking and alcohol consumption are prohibited while working. Caution:! To prevent from igniting, avoid exposing propane to an open flame. Consequently, all welding and brazing activities must only be performed after all trace of fl uid has been removed from the relevant part. Good ventilation is required. In case of emergency work in an environment with a high concentration of propane, a self-contained breathing equipment is mandatory. 3.3/ Precautions for handling Liquid propane transfer may create electrostatic charges. Provide earthing to prevent electrostatic charge build-up. It is recommended to wear insulated gloves when transferring liquefi ed gas, as very cold gas may be released. 3.4/ Fire emergency procedure Propane is highly fl ammable and may form explosive mixtures with air. Propane is heavier than air and will sink to the ground in the event of leakage. Without appropriate ventilation, it may accumulate in low areas and even ignite from a distance. Accidental intense heating of a propane-containing vessel (in the event of a fi re, for instance) can cause it to break and release the propane. The resulting vapour ignition can, under certain circumstances, lead to a defl agration or to an explosion. In some cases, dry powder, carbon dioxide or water spray may be used. The use of foam is ineffective. Never use solid water jet on receivers containing LPG if they have been heated. 25

26 3.5/ Emergency first aid procedure Handling precautions provide reliable protection against health hazards. However, if an emergency occurs, stay calm and act cautiously. Proceed as explained below and seek medical advice. In case of serious and persistent symptoms, call a physician or ask for emergency medical assistance. Move the victim to open air as quickly as possible. Consider switching the power supplies off, provided this does not create any sparks in the area where the propane vapours have spread. Close the cylinder or storage valves. Ensure adequate ventilation and check that air is breathable and safe before entering confi ned spaces. > If in eyes: Rinse carefully with water for at least 15 minutes. Remove contact lenses if applicable and easy. Continue rinsing. Seek medical attention. In case of eye damage due to cold temperatures, a prompt ophthalmological examination is recommended. > If on skin: Treat affected areas as for a thermal burn. Immediately and thoroughly wash with water. Immediately remove all contaminated or splattered clothing, provided they do not adhere to the skin. Avoid direct warming action (rub-down, hot bath, etc.). For any serious burn, seek medical attention. In such a case, the victim should be taken to hospital immediately. > If inhaled: In the event of exposure to high concentrations of vapours, fumes or aerosols, move the person to open air, outside of the contaminated area, and keep him/her warm and at rest. If symptoms persist, ask your doctor for advice. Provide oxygen or artifi cial respiration if necessary. > If swallowed: Not a likely route of exposure. > Medical advice: Administer symptomatic treatment. 4/ Special for chilled water circuits Chilled water circuits, in particular freon-to-water exchangers, are highly vulnerable to frost damage. Consequences can be signifi cant: exchanger or compressor replacement, etc. Take all necessary precautions to avoid such problems. The installer shall make sure that: > Glycol is used as antifreeze protection. > Water fl ow rate is suffi cient in each exchanger. > Appropriate precautions are taken in case of prolonged shutdown. Failure to comply with these will void equipment guarantee. Nota: ETT will not be liable for frost damage. The user shall: > control regularly, using a density meter for example, that the circuit is well protected for the effective outside temperature; > start units regularly when shutdown to avoid deterioration; > drain circuits when necessary (in case of power outage, failure, etc.). 26

27 I. Commissioning 1/ Please remember: > For the guarantee to be valid, equipment commissioning must be performed by a technician authorised by ETT. > To request commissioning, fi ll in the commissioning request form (available on our website, in the ETT Services section) and send it to ETT Services (ett.services@ett.fr). > The prerequisites listed below must be met. Any additional intervention resulting from failure to observe the prerequisites will be charged. > The installer (or a representative) must be present throughout the commissioning intervention. Otherwise, ETT will note be able to validate peripheral equipment commissioning (fl ow rate adjustment, control settings, power switch connection, etc.) and will therefore have to express reserves. 2/ Prerequisites for commissioning: > A Prevention and Safety plan has been implemented and ETT personnel can safely access the unit throughout the intervention. > Crankcase heaters have been activated 12 hours before commissioning. > Hydraulic connections have been made, pressure tests and purges have been performed. > Water fi lters have been installed (for units on water loop). > Gas connections have been made, pressure tests have been performed. > Fresh and exhaust air cowls and sealing gaskets have been installed according to our recommendations. > Air fi lters have been installed on all units. > Air duct connections have been made and all valves are set. > Probes, bus and displays have been connected according to our wiring diagrams and recommendations. > An additional bus has been installed on each unit according to our wiring diagrams for computer connection to the controller (if the unit is controlled by ACTION FROID). > Ethernet connecting cables for remote supervision have been installed on each unit according to our wiring diagrams. > A telephone line has been connected. 27

28 Appendix Appendix: CC Module 1/ Mounting the components 1.1/ Stop valve The gas stop valve is located in the boiler section. It has two threaded connections: one shall be connected to the CC module, the other to the gas supply line. > There are two gaskets on the gas supply side of the valve. Install one on the CC module side. > Tighten the connection. > Connect gas supply to the valve threaded connection. > Open the valve. > Check connection tightness. 28

29 Appendix Installation 2/ Gas box > Unscrew the 4 nuts on the CC module. > Install the box and put the screws back in place. 3/ Smoke ducts > Open the duct mounting bracket at the top of the unit. > Open the fresh air box. > On CC modules, the smoke outlets are equipped with lugs to hold the smoke duct in place. Make sure the lugs are in place. 29

30 Appendix 3.1/ Connecting to the CC module > Insert the central part of the smoke kit into the central part of the CC module. > Rotate the duct one quarter-turn. > Insert the outer part into the CC module. > Rotate the duct one quarter-turn. 3.2/ Mounting a duct extension Some CC module require a smoke duct extension. > Insert the central part of the smoke kit into the central part of the duct already installed. 30

31 Appendix Installation > Rotate the duct one quarter-turn. > Insert the outer part into the outer part of the duct already installed. > Rotate the duct one quarter-turn. 3.3/ Mounting the concentric flue The concentric fl ue consists of 2 concentric ducts. > Insert the central part of the concentric fl ue into the central part of the duct already installed. 31

32 Appendix > If you have diffi culty fi tting the two ducts together, lubricate the inner side of the gaskets before assembly with silicone grease. > Rotate the duct one quarter-turn. > Insert the outer part of the concentric fl ue into the outer part of the duct already installed. > Rotate the duct one quarter-turn. > Close the duct mounting bracket. 32

33 Appendix Installation 4/ Condensates evacuation CC modules are equipped with 2 to 5 condensates evacuation pipes, depending on the model. > These pipes must be connected to a water discharge system. > Place a funnel to collect all condensates and connect it to the waste water network. Nota: The condensates may be of a brownish colour. This is due to two main factors: > Quality of the air extracted by the boilers: combustion air contains several volatile particles that carbonise and release solid residues of small dimensions (presence of dust in the nearby environment). > Quality of the gas being used: presence of other gas particles. The composition of the gas can vary from one installation to the other, especially due to the difference in additive concentration. When the burner is in operation, these particles are carbonised and most of this deposit is evacuated naturally amidst the condensates. 33

34 Design: ETT - Document printed by an environmentally friendly printer using vegetable-based inks on PEFC paper created from sustainably-managed forests. Énergie Transfert Thermique Reference: 56 route de Brest - BP Ploudalmézeau - France Tel: 33 (0) Fax: 33 (0) Export Contact: 33 (0) ETT Services: 33 (0)