User`s manual "NK" ( PDF 4,08Mb )
Contents
1. VENI 25 Number o Number EZ a NK 400x200 4 5 3 39 5 65 330 65 NK 400x200 6 0 3 men ene nen 400 NK 400x200 7 5 3 3 10 9 NK 400x200 9 0 3 3 13 0 NK 400x200 10 5 3 3 15 2 770 6 5 NK 400x200 12 0 3 3 17 4 880 65 Nat e mes ar wow ss 000763 75 0 mes 109 ss 765 nKs0n250903 ao 150 eso 76 NK 50250 1083 aa oa uen c NK 500 250 18 0 3 18 0 3 3x6 0 26 0 1320 7 65 NK 500x250 21 0 3 3 3x7 0 30 0 1540 500x300 7 5 3 3 3x2 5 10 9 so 000 eo 82 gt me sos ve 82 NK 5080 1203 74 e 52 ez EE EEE 82 NK 500x300 18 0 3 18 0 3 3x6 0 26 0 1320 8 2 500x300 21 0 3 21 0 3 3x7 0 30 0 1540 8 2 NK 500x300 22 5 3 22 5 3 9x2 5 32 5 16 0 Kawas 9o 3 o Dp NK 600x300 M 3 3x40 174 94 NK 600 300 15 0 3 15 0 3 BEN 7 EE NK 600000 ie NK 60002403 en OE OE A CEE e eeo sa NK 600x300 36 0 3 NK 600x350 9 0 3 NK 600x350 12 0 3 NK 600x350 15 0 3 NK 600x350 18 0 3 zo 300 1540 975 waor 240 350 1800 975 3 3 3 3 3 Duct heaters The allowable power supply voltage deviations from the2. 2x0 6 5 2 90 1 7 NK 125 1 6 1 1 6 230 2x0 8 7 0 100 1 7 NK 125 2 4 1 230 3x0 6 7 8 150 2 4 150 1 2 1 1 2 230 1x1 2 5 2 120 2 0 NK 150 2 4 1 230 2x1 2 10 4 150 2 4 A NK 150 3 4 1 3 4 1 230 2x1 7 14 7 220 2 5 NK 150 3 6 3 400 3x1 2 5 2 220 3 0 NK 150 5 1 3 5 1 3 3 0 NK 150 6 0 3 6 0 3 400 3 0 NK 160 1 2 1 230 2 05 NK 160 2 4 1 2 4 1 230 2x1 2 10 4 180 2 45 NK 160 3 4 1 230 2x1 7 14 8 250 2 45 NK 160 3 6 3 3 6 3 400 3x1 2 5 2 265 2 35 NK 160 5 1 3 400 3x1 7 7 4 375 2 35 NK 160 6 0 3 6 0 3 400 3x2 0 8 7 440 3 0 NK 200 1 2 1 1 2 1 NK 200 2 4 1 2 4 1 230 NK 200 3 4 1 3 4 1 230 NK 200 3 6 3 3 6 3 400 NK 200 5 1 3 5 1 3 400 3x1 7 7 4 375 NK 250 2 4 1 24 1 230 2x1 2 10 4 265 2 75 NK 250 3 6 3 3 6 3 400 3x1 2 5 2 375 3 95 NK 250 6 0 3 60 3 400 3x2 0 8 7 440 2 65 NK 250 9 0 3 _ 9 0 3 400 3x3 0 13 0 660 NK 315 1 2 1 1 2 1 230 1x1 2 5 2 180 4 1 NK315244 2 4 1 230 2x1 2 10 4 265 NK 315 3 6 3 36 3 400 3x1 2 5 2 375 NK 315 9 0 3 9 0 3 400 3x3 0 13 0 660 5 8 Heater Dimensions mm model A 2 20 2 KEN Fl fn NK 400x200 4 5 3 540 240 420 220 400 200 200 NK 400x200 6 0 3 540 240 420 220 400 200 200 NK 400 200 7 5 3 540 240 420 220 400 200 20
3. heater to power supplv network please make sure that the heater is free of any visible damages and that the electric heating elements are firmly fixed to the casing The heater shall be installed in the air duct with the same diameter The heater operating position shall provide free access to the connecting box and to the thermal switch manual RESET button The heater shall be firmly fixed but free access for the heater maintenance shall be provided The rectangular heaters shall be installed in the air supply system in such a way that pointer on the heater matches the air motion direction The minimum distance between the fan and the heater shall be 1m Do not use the thermal insulation materials for the heater insulation Content of anv flammable and explosive fire hazardous materials in the air at the distance of 150 mm or less to the heater and 500 mm or less from the heater inlet outlet is prohibited The air ducts and the fans shall be equipped with the grille or other protecting devices to prevent free access to the heating elements Power shall be supplied through the switch that opens all the phases with the clearance between the open contacts no less 3mm atall poles in compliance with the electric wiring installation requirements The air filter shall be installed before the heater to protect it from dust and dirt The distance between the filter and the heater shall be long enough as the close filter location to the heater is
4. 0 NK 400x200 9 0 3 540 240 420 220 400 200 200 NK 400 200 10 5 3 540 240 420 220 400 200 200 NK 400x200 12 0 3 540 240 420 220 400 200 200 NK 400 200 15 0 3 540 240 420 220 400 200 200 NK 500x250 7 5 3 640 290 520 270 500 250 200 NK500x250 9 0 3 640 290 520 270 500 250 200 500 250 10 5 3 640 290 520 270 500 250 200 NK500x250 12 0 3 640 290 520 270 500 250 200 500 250 15 0 3 640 290 520 270 500 250 200 NK500x250 18 0 3 640 290 520 270 500 250 200 NK500x250 21 0 3 640 290 520 270 500 250 200 FEN Duct heaters Dimensions mm Heater model D C NK 500x300 7 5 3 520 320 NK 500x300 9 0 3 520 320 NK 500x300 10 5 3 520 320 NK 500x300 12 0 3 520 320 NK 500x300 15 0 3 520 320 NK 500x300 18 0 3 520 320 NK 500x300 21 0 3 520 320 NK 500x300 22 5 3 520 320 NK 600x300 9 0 3 620 320 NK 600x300 12 0 3 620 320 NK 600x300 15 0 3 620 320 NK 600x300 18 0 3 620 320 NK 600x300 21 0 3 620 320 NK 600x300 24 0 3 620 320 NK 600x300 30 0 3 620 320 NK 600x300 36 0 3 620 320 NK 600x350 9 0 3 620 370 NK 600x350 12 0 3 620 370 NK 600x350 15 0 3 620 370 NK 600x350 18 0 3 620 370 NK 600x350 21 0 3 620 370 NK 600x350 24 0 3 620 370
5. 1 150 306 214 255 40 120 NK 150 3 4 1 150 306 214 255 40 120 NK 150 3 6 3 150 376 296 255 40 120 NK 150 5 1 3 150 376 296 255 40 120 NK 150 6 0 3 150 376 296 255 40 120 Heater Dimensions mm model D L NK 160 1 2 1 160 306 NK 160 2 4 1 160 306 NK 160 3 4 1 160 306 NK 160 3 6 3 160 376 NK 160 5 1 3 NK 160 6 0 3 160 376 NK 200 1 2 1 200 294 NK 200 2 4 1 200 294 NK 200 3 4 1 200 294 NK 200 3 6 3 200 376 NK 200 5 1 3 200 376 NK 200 6 0 3 200 376 NK 250 1 2 1 250 294 NK 250 2 4 1 250 294 NK 250 3 6 3 250 376 NK 250 6 0 3 250 376 NK 250 9 0 3 250 376 NK 315 1 2 1 315 294 NK 315 2 4 1 315 294 NK 315 3 6 3 315 376 NK 315 6 0 3 315 376 NK 315 9 0 3 FEN r Duet heaters Number of Number of Min Heater supply voltage Voltage heating elements gareni air flow Weight model h V A kg phases pcs x power kW m3 h NK 100 0 6 1 1 230 1x0 6 2 6 60 1 4 NK 100 0 8 1 1 230 1x0 8 3 5 80 1 4 NK 100 1 2 1 1 230 2x0 6 5 2 90 1 6 NK 100 1 6 1 1 230 2x0 8 7 0 120 1 6 NK 100 1 8 1 1 230 3x0 6 7 8 130 17 NK 125 0 6 1 1 230 1x0 6 2 6 60 1 45 NK 125 0 8 1 0 8 1 230 1x0 8 3 5 80 1 45 NK 125 1 2 1 1 2 1 230
6. User s manual 30637114 014 2PS Duct heater VENTS series Duct heaters Introdueti nssr estimen hennen 3 APPLICATION PA 3 Deliv ry 5 t nar 3 Basic technical data sheet 3 Heater Structure sss 10 Safety requirements A 18 Installation and operation guidelines 19 Servicing and maintenance sesseessersersseesersseessresserssessersserser 20 STOVA E 20 Manufacturer s WarrantvV ereesensznzznnzznnzznnennnzznnennzznnznnzznnzzzta 20 Acceptance certificate sneven 21 FEN r Introduction This manual combines user s manual service manual technical data sheet and installation guidelines for VENTS NK electric duct heaters hereinafter referred to as the heater Application Duct electrical heaters are designed for heating of intake fresh air transported through the ventilating system The heated air must not contain any combustible or explosive substances chemical vapours dust soot etc The duct heaters are the complete units and are not designed for independent operation Delivery set Duct heater 1 pce m User s manual 1 pce Basic technical data sheet The heaters are available in single or three phases modifications The heaters are designed for operation in enclosed spaces at the ambient temperature ranging between 30 C up to 50 C Do n
7. e power supply star connection and leaded outside thermal protection contacts 2 g 20 CV LO LE LW Joe JOS L JOS L S1 T 52 T RESET El E2 E3 E4 EB Qj 230 E6 E7 EB E9 X2 Wiring diagram of the electric heater with six electrical heating elements and three phase power supplv delta connection and thermal protection contacts leaded outside 51 T 8 2 o 52 T RESET 8 El gt 2 w 400V E3 E4 gt E5 400V N E6 N m Wiring diagram of the electrical heater with one electrical heating element single phase power supplv and run out timer HEATER Wiring diagram of the electric heater with three electrical heating elements star connection three phase power supplv and run out timer ner HEATER S2 4T RESET S ON OFF switch KT run out timer M fan KM magnetic starter Q automatic circuit breaker Duct heaters Wiring diagram of t
8. ents cooling The automatic circuit breaker Q is designed for overload protection of the electrical circuits Wiring diagram types are determined by quantity of the heating elements supply voltage characteristics number of phases Electric wiring diagrams for round ducts are shown in fig 5 6 7 8 and for rectangular ducts in fig 9 10 11 12 Safety requirements The requirements of the present user s manual must be considered during the heater mounting and operation process as well as the general requirements of and all applicable local and national building and electrical codes and standards Only the qualified electrical engineers authorized for independent execution of the electrical works for the electrical installations with the voltage up to 1000 V and specially trained to observe fire and engineering safety regulations are allowed to perform mounting and connection works of the heater The heater shall be grounded Power supply to the heater without air supply to the electric heating elements is not allowed The heater operation without the thermal switches connected to the external protecting devices that cut off power supply to the heating elements during the thermal switches turning on is prohibited Installation and operation guidelines Installation connection adjustment and repair works shall be performed only after the fan is disconnected from power supplv network Before connecting the
9. he rectangular electrical heater with three electrical heating elements three phase power supply and run out timer HEATER Wiring diagram of the rectangular electrical heater with three electrical heating elements star connection three phase power supply and run out timer 11213 S ON OFF switch KT run out timer M fan KM magnetic starter Q automatic circuit breaker WENT Check the following conditions before commisioning the device realiable grounding the ground clamp shall be connected to the ground wire power to the electrical heater is supplied only when the fan is operating electric heater power cut off is allowed only when the fan is operating the time span between the heater power cut off and the fan turn off shall be at least 30 min minimum air flow through the heating coils shall be equal or more than the value stated in tables 2 and 4 Install the fan in the duct before the heater along the air stream direction to disable additional heating of the electrical heater The thermal switches with automatic reset can get actuated during the heater operation Such thermal switch turn on can is posible during abrupt electric power supply cut off or due to a wrong heater selection that does not match the set air flow characteristics The protecting devices should cut off power supply to the heating ele
10. l heating elements quantity supply voltage and number of phases in the motor See the available diagrams in the fig 5 16 Designation key S1 52 thermal switches En electrical heating elements X1 terminal block X2 ground clamp Wiring diagram of the electrical heater with one electrical heating element and single phase power supply 51 T Wiring diagram of the heater with two electrical heating elements and single phase power supply X1 Wiring diagram of the electric heater with three electrical heating elements and single phase power supply x1 m S T 1 2 RESET 4 E1 E2 E3 r Cn 30 V Wiring diagram of the heater with three electrical heating elements and three phase power supply XI Duct heaters Wiring diagram of the electric heater with three electrical heating elements and three phas
11. ments till the heater temperature falls down to the threshold value of the thermal switch turning on Turning on of the thermal switch with manual reset is possible when power is supplied to the electric heating elements but there is no air flow through the heating coils emergency operation mode or when the air flow is below the required value During the thermal switch turm on cut off power supply to the heater correct the fault in the ventilation system remove the cover from the heater cover by pressing the RESET button reset the thermal switch to the reference position Fig 5 6 7 8 9 10 11 12 show the heater wiring diagrams Fig 13 14 15 16 show the recommended wiring diagrams with control circuits Duct heaters Operation logic of the electric heaters with control circuits is as follows As the ON OFF switch S turns ON the KM magnetic starter coil is charged through the closed contacts of the thernal switches Consequently electric power to the heating elements is supplied through the closed contacts of the thermal switches and magnetic starter Should at least one of the thermal switches turn on the power circuit of the magnetic starter KM and respectively the power circuit of the heating element get broken thus preventing the heater overheating The diagram shows the fan connection example with run out timer KT when the motor M is turned off before the heater is turned off to ensure the electric heating elem
12. not allowed due to safetv precaution reasons VEN r Duct heaters Servicing and maintenance The heaters shall be operated and maintained by duly qualified experts Check the following conditions during the device maintenance tightness of screw rivet and weld connection torque of grounding screw clamps and electric contact connections E wiring clamp connections the surfaces of the electric heating elements are free of dust and dirt Do not use any solvents and inflammable substances for cleaning Storage and handling Store the heater in the manufacturer s original packing box in a closed premise with the temperature range from 10 C to 40 C and the relative humidity less than 80 at 25 C Vapours and chemical mixtures causing corrosion and insulation deformation are not allowed in the air Use any vehicle types to transport the heater provided that it is protected against mechanical damage or contacting atmospheric precipitation Avoid any mechanical shocks and strokes during handling operations Manufacturer s warranty Manufacturer hereby guarantees normal performance of the heater within 24 months since the date of its sale in accordance to the rules of transportation storage assembling and operation In case of no confirmation of sales date the warranty period is calculated from the production date In case of any failures due to faulty manufacturing during warranty period the Custome
13. ot heat the air above 40 C Air flow through the heating coils shall always be above the minimum air flow shown in tables 2 and 4 to prevent overheating Designation key X X X X Number of supplv voltage phases 13 Heating coil capacity kW 0 6 0 8 1 2 1 6 1 8 2 4 3 4 3 6 4 5 5 1 6 0 7 5 9 0 10 5 12 0 15 0 18 0 21 0 22 5 24 0 30 0 36 0 Branch pipe diameter for round ducts or dimensions for rectangular ducts mm 100 125 150 160 200 250 315 or 400x200 500x250 500x300 600x300 600x350 Heater name NK duct heater Duct heaters Designation key example NK 315 9 0 3 three phase electric heater with branch pipe diameter 315 mm power 9 kW NK 600x350 21 0 3 three phase electric heater for rectangular duct 600x350 mm power 21 kW The basic heater overall dimensions shall be as shown in tables 1 3 and in fig 1 2 The basic heater parameters and thermal dynamic characteristics are shown in tables 2 4 Heater Dimensions mm model D L A NK 100 0 6 1 100 306 101 NK 100 0 8 1 100 306 101 NK 100 1 2 1 100 306 101 NK 100 1 6 1 100 376 101 NK 100 1 8 1 100 306 101 NK 125 0 6 1 125 306 101 NK 125 0 8 1 125 306 101 NK 125 1 2 1 125 306 101 NK 125 1 6 1 125 306 101 NK 125 2 4 1 125 376 101 NK 150 1 2 1 150 306 120 NK 150 2 4
14. r has the right to have the goods replaced by the Seller WENT ACCEPTANCE CERTIFICATE The duct heater complies with the technical requirements and accepted as serviceable VENTS NK model Date of production Stamp of the acceptance inspector Sold Name of the vendor stamp of the shop Date of sale WARRANTY CARD WEN r Duet heaters CD VENTS VOEIEREUG
15. rated value shown in the tables 2 and 4 shall not exceed 10 The electric heater has class of insulation l according to the electric shock hazard protection Heater structure The heaters fig 3 4 consist of the casing 1 with rigidly fixed connecting box 2 with the removable cover 3 The tight seals 4 are located at the external side of the connecting box for routing of supply control and ground cables The heating elements 5 are located inside the casing The casing the connecting box and the heater cover are made of galvanized steel The connecting box incorporates fastening and electrical connections for electric heating elements as well as terminal block for connection to the external supply and control circuits of the heater screw ground terminal thermal switches automatic and manual The heaters are equipped with two overheating sensors thermal switches with automatic reset and the temperature threshold value 50 C with manual reset and the temperature threshold value 90 C Thermal switch with manual reset is equipped with the button for manual restart The label RESTART is near the button The electric heater wiring diagram is shown at the internal wall of the connecting box NK heater for round ducts casing connecting box connecting box cover cable clamps heating electric element wm WN Duct heaters Wiring diagram type is determined by electrica
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