Fan coil unit NBS 100/150

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1 Fan coil unit /150 Ferdinand Schad KG Steigstraße D Kolbingen Telephone +49 (0) Fax +49 (0) info@schako.de

2 Contents Description...3 Advantages...3 Description of the equipment...3 Base unit... 3 Housing... 3 Heat exchanger... 3 Motorised fan... 3 Filter... 4 Accessories... 4 Models, dimensions and weights...5 Dimensions... 5 Weights... 6 Circuit diagrams...6 Technical data...9 /1 - Filter G /2 - Filter G /3 - Filter G /1 - Filter G /2 - Filter G /3 - Filter G /1 - Filter G /2 - Filter G /3 - Filter G Acoustic data Acoustic data Accessories Droplet separator Flexible connections (-FS-F) and flange (-FL) Supply air (-PZ) and return air boxes (-PA) Mixing unit (-ME) Mineral fibre board silencers Electric heating register (-BE) Valves Actuators Temperature controls Installation Maintenance Legend Order details Specification text Selection program for a quick and accurate design Z11/20-2

3 Description NBS fan coil units with small mounting height are used for decentralised air treatment. They are particularly suitable for small units in which higher cooling capacities and pressures are required than those that a standard fan coil unit is able to provide. Additionally, the NBS fan coil units outdo the performance of standard fan coil units. Its compact dimensions and low height make the NBS fan coil unit the perfect solution for horizontal installation in false ceilings or suspension-type mounting in industrial halls. The fan coil unit series consists of two model series, a modular unit () and a compact unit (), which can both be delivered, depending on the desired performance profile, with different motor, register and filter equipment. - Motorised fan: 1 motor with 1, 2 or 3 fans - Volumetric flow: from 500 to 3500 m 3 /h - Available static pressure: from 5 to 150 Pa - Cooling capacity: from 3 to 16 kw - Heating capacity: from 5 to 25 kw - Filtering efficiency G3 - Motorised fan: 1, 2 or 3 motorised fans - Volumetric flow: from 1500 to 6000 m 3 /h - Available static pressure: from 40 to 250 Pa - Cooling capacity: from 10 to 32 kw - Heating capacity: from 8 to 45 kw - Filtering efficiency G3 or G4 Advantages - High energy efficiency - High performance (compensation of high thermal loads) - Low noise level - Compact dimensions and low mounting height - Low mounting and maintenance expenditure - Decentral air conditioning Description of the equipment Base unit The base unit consists of a jacket made of galvanised sheet steel equipped with heat and noise insulation, a motorised fan, one or two heat exchangers, filters and a collecting pan for the water of condensation. Housing In the 100 series, the housing consists of galvanised sheet steel profiles and plates and heat or sound insulation 12 mm in thickness. In the 150 series, the housing consists of aluminium profiles, galvanised sheet steel, plastic corners and a circumferential seal to guarantee tightness. The jacket is manufactured in sandwich design and has interior heat or sound insulation 25 mm in thickness. Heat exchanger The heat exchanger can consist of a single register (cooling or heating) or two registers (cooling and heating). They consist of copper pipes, aluminium ribs, a manual diffuser system and a galvanised steel frame. This unit is completed by a collecting pan made of galvanised sheet steel for collecting the water of condensation from the cooling register. The length of the register and the number of pipe rows or circuits of each register depend on the performance required. The water connections can be attached to the left- or right-hand side. Motorised fan The built-in fans are dynamically balanced, double-sided intake-operated centrifugal blowers with forward directed blades. The fans have been selected to allow the required static pressures to be achieved at low sound power levels. The NBS 100 model has a motor with one, two or three fans. The series 150 comprises a motorised fan with one motor (1 fan), 2 motors (2 fans) or 3 motors (3 fans). Z11/20-3

4 Filter The filter of filter class G3 or G4 (only for ) consists of a galvanised steel frame and a synthetic filter medium. To facilitate maintenance work, the filters are guided in profiles so that they can be easily removed by pulling them out sideways or, optionally also downwards or upwards. An optional multi-part filter facilitating filter removal can also be ordered. Model St Components filter section Standard filter Multi-part filter Dimensions St Dimensions x685x x342.5x x577x x384.6x x832x x554.6x x395x x395x x395x x395x x395x x395x10 Accessories Optionally, upon customer request or when required, additional accessories can be delivered, such as: mixing unit, silencers for supply air and return air, flange, multi-part filter, flexible connections, droplet separator and an electric heating register. SCHAKO offers an extensive product range of control equipment (temperature controls, valves, actuators, etc.). Z11/20-4

5 Models, dimensions and weights Dimensions B 65 L H 13 B H H1 L 75 B1 50 Available sizes Model B H L Available sizes Model B B1 H H1 L Z11/20-5

6 Weights Model / Size Device unit (1) Suction / Blow unit (L 300 mm) Weights (kg) Mixing unit (1) STANDARD UNIT: housing + cooling and heating registers (empty) + motorised fan + filter Water Cooling register Water Heating register ,5 1,89 0, ,39 1, ,5 5,04 2, ,50 1, ,82 2, ,5 33 7,82 3,95 Circuit diagrams Yellow Yellow / Green G Green Blue Brown Grey Purple Orange Red 1= Max. velocity 5= Min. velocity N G Max. Medium Min. Yellow / Green G Yellow C 15 µf Green Blue Brown Grey Red N N G Max. Medium Min. According to DIN EN , an all-pole disconnecting device must be provided by the customer. Z11/20-6

7 Wiring for parallel operation Wiring for parallel operation ON-SITE Yellow Yellow / Green G Green Blue Brown Grey Purple Orange 1= Max. velocity 5= Min. velocity N G Max. Medium Min. Speed selector Yellow Yellow / Green G Green Blue Brown Grey Purple Orange Red 1= Max. velocity 5= Min. velocity N G Max. Medium Min. Z11/20-7

8 Wiring for parallel operation ON-SITE Yellow Yellow / Green G C 15 µf Green Blue Brown Grey Red N N G Max. Medium Min. Speed selector Yellow / Green G Yellow Green Blue Brown Grey Red C 15 µf N N G Max. Medium Min. Z11/20-8

9 Technical data /1 - Filter G3 Available static pressure (Pa) V (m 3 /h) V [l/s] Q ges (1) (kw) 6,9 6,59 6,09 5,32 4,24 3,13 Q s (1) (kw) 5,07 4,8 4,38 3,76 2,91 2,1 Q (2) (kw) 9,62 9,16 8,44 7,35 5,84 4,33 V WK (1) (l/h) V WH (2) (l/h) Pa WK (1) (kpa) Pa WH (2) (kpa) T AK (1) ( C) 14,5 14,2 13,8 13,1 12,1 11,0 rf AK (1) (%) 90,0 91,0 92,0 93,0 95,0 97,0 T AH (2) ( C) 43,2 43,8 44,8 46,5 49,2 52,3 rf AH (2) (%) 13,0 13,0 12,0 11,0 10,0 8,0 W (W) A (A) 0,85 0,79 0,73 0,66 0,58 0,52 L WA [db(a)] (1) COOLING: air (27 C/50%), water (7 C /12 C) - filter G3 4-pipe register (2) HEATING: air (20 C/50%), water (70 C /60 C) - filter G3 4-pipe register /2 - Filter G3 Available static pressure (Pa) V (m 3 /h) V [l/s] Q ges (1) (kw) 13,24 12,82 12,14 10,89 9,16 7,38 Q s (1) (kw) 9,61 9,26 8,70 7,68 6,33 5,00 Q (2) (kw) 17,83 17,24 16,31 14,59 12,27 9,90 V WK (1) (l/h) V WH (2) (l/h) Pa WK (1) (kpa) 39,0 37,0 34,0 28,0 20,0 14,0 Pa WH (2) (kpa) 24,0 23,0 21,0 17,0 12,0 8,0 T AK (1) ( C) 14,3 14,2 13,9 13,3 12,5 11,6 rf AK (1) (%) 90,0 91,0 91,0 92,0 94,0 96,0 T AH (2) ( C) 42,9 43,4 44,1 45,5 47,6 49,9 rf AH (2) (%) 14,0 13,0 13,0 12,0 11,0 10,0 W (W) A (A) 2,23 2,05 1,83 1,57 1,39 1,29 L WA [db(a)] (1) COOLING: air (27 C/50%), water (7 C /12 C) - filter G3 4-pipe register (2) HEATING: air (20 C/50%), water (70 C /60 C) - filter G3-4-pipe register Z11/20-9

10 /3 - Filter G3 Available static pressure (Pa) V (m 3 /h) V [l/s] Q ges (1) (kw) 17,82 16,79 15,58 14,07 12,12 9,50 Q s (1) (kw) 12,72 11,89 10,93 9,76 8,27 6,36 Q (2) (kw) 24,80 23,37 21,69 19,63 16,97 13,44 V WK (1) (l/h) V WH (2) (l/h) Pa WK (1) (kpa) 30,0 27,0 23,0 19,0 15,0 10,0 Pa WH (2) (kpa) 32,0 29,0 26,0 21,0 16,0 11,0 T AK (1) ( C) 13,8 13,5 13,1 12,6 11,9 11,0 rf AK (1) (%) 91,0 92,0 93,0 94,0 95,0 97,0 T AH (2) ( C) 45,2 46,0 47,0 48,3 50,2 53,0 rf AH (2) (%) 12,0 12,0 11,0 10,0 9,0 8,0 W (W) ,4 381,8 354,2 324,3 294,4 A (A) 1,90 1,78 1,66 1,54 1,41 1,28 L WA [db(a)] (1) COOLING: air (27 C/50%), water (7 C /12 C) - filter G3-4-pipe register (2) HEATING: air (20 C/50%), water (70 C /60 C) - filter G3-4-pipe register /1 - Filter G3 Available static pressure (Pa) V (m 3 /h) V [l/s] Q ges (1) (kw) 13,73 13,29 12,79 12,22 11,56 10,81 9,94 8,94 Q s (1) (kw) 9,93 9,55 9,13 8,67 8,14 7,54 6,87 6,11 Q (2) (kw) 18,11 17,50 16,82 16,05 15,18 14,17 13,04 11,74 V WK (1) (l/h) V WH (2) (l/h) Pa WK (1) (kpa) 77,0 73,0 68,0 62,0 57,0 50,0 43,0 36,0 Pa WH (2) (kpa) 27,0 26,0 24,0 22,0 20,0 18,0 15,0 13,0 T AK (1) ( C) 14,3 14,1 13,9 13,7 13,4 13,0 12,6 12,1 rf AK (1) (%) 90,0 90,0 91,0 91,0 92,0 93,0 93,0 94,0 T AH (2) ( C) 42,6 43,0 43,5 44,1 44,8 45,6 46,7 47,9 rf AH (2) (%) 14,0 14,0 13,0 13,0 12,0 12,0 11,0 11,0 W (W) A (A) 2,71 2,6 2,5 2,39 2,3 2,2 2,1 2 L WA [db(a)] (1) COOLING: air (27 C/50%), water (7 C /12 C) - filter G3-4-pipe register (2) HEATING: air (20 C/50%), water (70 C /60 C) - filter G3-4-pipe register Z11/20-10

11 /2 - Filter G3 Available static pressure (Pa) V (m 3 /h) V [l/s] Q ges (1) (kw) 25,56 24,70 23,64 22,34 20,90 19,40 17,89 16,33 Q s (1) (kw) 18,82 18,08 17,16 16,07 14,87 13,66 12,47 11,27 Q (2) (kw) 34,25 33,04 31,56 29,76 27,78 25,75 23,73 21,67 V WK (1) (l/h) V WH (2) (l/h) Pa WK (1) (kpa) , Pa WH (2) (kpa) T AK (1) ( C) 14,9 14,7 14,4 14,1 13,7 13,3 12,9 12,5 rf AK (1) (%) T AH (2) ( C) 41, ,6 43,3 44,2 45,2 46,2 47,3 rf AH (2) (%) , W (W) A (A) 5,50 5,24 4,96 4,69 4,47 4,29 4,13 3,96 L WA [db(a)] (1) COOLING: air (27 C/50%), water (7 C /12 C) - filter G3-4-pipe register (2) HEATING: air (20 C/50%), water (70 C /60 C) - filter G3-4-pipe register /3 - Filter G3 Available static pressure (Pa) V (m 3 /h) V [l/s] Q ges (1) (kw) 33,44 32,69 31,67 30,30 28,59 26,68 24,60 22,28 Q s (1) (kw) 24,35 23,69 22,84 21,69 20,28 18,75 17,11 15,34 Q (2) (kw) 45,69 44,64 43,23 41,33 38,99 36,39 33,60 30,51 V WK (1) (l/h) V WH (2) (l/h) Pa WK (1) (kpa) 64,0 61,0 58,0 54,0 48,0 43,0 37,0 31,0 Pa WH (2) (kpa) 40,0 39,0 37,0 34,0 30,0 27,0 23,0 20,0 T AK (1) ( C) 14,6 14,4 14,2 14,0 13,7 13,3 12,9 12,4 rf AK (1) (%) 89,0 90,0 90,0 91,0 91,0 92,0 93,0 94,0 T AH (2) ( C) 42,8 43,2 43,6 44,2 45,1 46,0 47,1 48,4 rf AH (2) (%) 14,0 13,0 13,0 13,0 12,0 12,0 11,0 10,0 W (W) A (A) 6,96 6,83 6,68 6,51 6,32 6,14 5,98 5,82 L WA [db(a)] (1) COOLING: air (27 C/50%), water (7 C /12 C) - filter G3-4-pipe register (2) HEATING: air (20 C/50%), water (70 C /60 C) - filter G3-4-pipe register Z11/20-11

12 /1 - Filter G4 Available static pressure (Pa) V (m 3 /h) V [l/s] Q ges (1) (kw) 13,09 12,69 12,24 11,73 11,30 10,42 9,59 8,66 Q s (1) (kw) 9,38 9,06 8,69 8,27 7,79 7,24 6,61 5,90 Q (2) (kw) 17,22 16,69 16,09 15,40 14,60 13,67 12,59 11,37 V WK (1) (l/h) V WH (2) (l/h) Pa WK (1) (kpa) 71, ,0 58,0 53,0 47,0 40,0 34,0 Pa WH (2) (kpa) 25,0 24,0 22,0 20,0 19,0 16,0 14,0 12,0 T AK (1) ( C) 14,1 13,9 13,7 13,5 13,2 12,9 12,5 12,0 rf AK (1) (%) 90,0 91,0 91,0 92,0 92,0 93,0 94,0 95,0 T AH (2) ( C) 43,2 43,6 44,1 44,6 45,3 46,1 47,1 48,3 rf AH (2) (%) 13,0 13,0 13,0 12,0 12,0 12,0 11,0 10,0 W (W) A (A) 2,56 2,48 2,40 2,32 2,24 2,15 2,07 1,97 L WA [db(a)] (1) COOLING: air (27 C/50%), water (7 C /12 C) - filter G4-4-pipe register (2) HEATING: air (20 C/50%), water (70 C /60 C) - filter G4-4-pipe register /2 - Filter G4 Available static pressure (Pa) V (m 3 /h) V [l/s] Q ges (1) (kw) 25,03 24,24 23,24 21,98 20,51 18,98 17,45 15,88 Q s (1) (kw) 18,35 17,67 16,82 15,76 14,56 13,32 12,12 10,92 Q (2) (kw) 33,50 32,40 31,00 29,26 27,25 25,19 23,15 21,07 V WK (1) (l/h) V WH (2) (l/h) Pa WK (1) (kpa) 65,0 62,0 57,0 52,0 46,0 40,0 34,0 29,0 Pa WH (2) (kpa) 40,0 37,0 35,0 31,0 27,0 24,0 20,0 17,0 T AK (1) ( C) 14,8 14,6 14,3 14,0 13,6 13,2 12,8 12,4 rf AK (1) (%) 89,0 89,0 90,0 91,0 91,0 92,0 93,0 94,0 T AH (2) ( C) 41,8 42,2 42,8 43,6 44,5 45,4 46,5 47,6 rf AH (2) (%) 14,0 14,0 14,0 13,0 13,0 12,0 11,0 11,0 W (W) A (A) 5,34 5,12 4,87 4,63 4,42 4,24 4,08 3,91 L WA [db(a)] (1) COOLING: air (27 C/50%), water (7 C /12 C) - filter G4-4-pipe register (2) HEATING: air (20 C/50%), water (70 C /60 C) - filter G4-4-pipe register Z11/20-12

13 /3 - Filter G4 Available static pressure (Pa) V (m 3 /h) V [l/s] Q ges (1) (kw) 32,61 31,84 30,81 29,40 27,66 25,76 23,74 21,50 Q s (1) (kw) 23,62 22,99 22,12 20,95 19,54 18,02 16,44 14,74 Q (2) (kw) 44,53 43,47 42,04 40,10 37,73 35,15 32,45 29,46 V WK (1) (l/h) V WH (2) (l/h) Pa WK (1) (kpa) 61,0 59,0 55,0 51,0 45,0 40,0 35,0 29,0 Pa WH (2) (kpa) 39,0 37,0 35,0 32,0 29,0 25,0 22,0 18,0 T AK (1) ( C) 14,4 14,3 14,1 13,8 13,5 13,1 12,7 12,3 rf AK (1) (%) 90,0 90,0 90,0 91,0 92,0 92,0 93,0 94,0 T AH (2) ( C) 43,2 43,5 44,0 44,7 45,5 46,5 47,6 48,8 rf AH (2) (%) 13,0 13,0 13,0 12,0 12,0 11,0 11,0 10,0 W (W) A (A) 6,82 6,71 6,57 6,40 6,23 6,07 5,92 5,78 L WA [db(a)] (1) COOLING: air (27 C/50%), water (7 C /12 C) - filter G4-4-pipe register (2) HEATING: air (20 C/50%), water (70 C /60 C) - filter G4-4-pipe register Acoustic data Acoustic data D e (db/oct) D e (db/oct) NBS Speed f m (Hz) NBS Speed f m (Hz) , Z11/20-13

14 Accessories Droplet separator For with an air stream speed exceeding 2.5 m/s, it is imperative to use a droplet separator to avoid spreading of the condensate. The droplet separator consists of polypropylene leaves and a rack made of galvanised or stainless sheet steel. Maximum admissible air flow to prevent condensate from spreading Model V (m 3 /h) Dimensions Flange (-FL) Flexible connections (-FS-F) and flange (-FL) The unit is connected to the air ducts via flexible connections (- FS-F), which prevent vibrations from being transmitted to the system, or via a flange (-FL). Flexible connections (-FS-F) Flexible connections (-FS-F) Flange (-FL) Model Size B1 B2 B3 Number bores Z11/20-14

15 Supply air (-PZ) and return air boxes (-PA) Made of galvanised sheet steel with open connection (standard) or round connection via connection piece plate. Depending on customer request, the round connection pieces can also be attached to the side of the plenum box. Box connections Connection piece plate Model Size Max. number of connection pieces Ø 123 Ø 158 Ø 198 Ø Supply air box with connection pipes Model Length of box Other equipment is available on request Max. number of connection pieces Ø 123 Ø 158 Ø 198 Ø Dimensions B+42 B B2 Flange Flexible connections Joint H+42 H Ø 8 71 Suction box B1 11 M6 31 Flexible connections Flange Blow box Connecting plate with connection piece (optional) L Flange Flexible connections Joint Model Size B B1 B2 H Number bores ,5 4 Suction box Flexible connections Flange Blow box The insulation is done on site. Connecting plate with connection piece (optional) Z11/20-15

16 Mixing unit (-ME) The mixing unit consists of galvanised sheet steel and is lined with sound and heat insulation. The mixing unit allows the air to be replenished by introducing a fresh air portion. Mixing unit Front damper L Mineral fibre board silencers For noise reduction purposes in the return and supply air sections, it is possible to install a silencer. The silencers consist of vertically arranged small cells on a galvanised sheet steel frame. The cells consist of mineral fibre boards (biodegradable, abrasion-resistant and fire-resistant according to DIN 4102) covered with a continuous glass fibre filament. In order to reduce noise, while ensuring minimum pressure loss, the length of the cells and their spacing depend on the desired silencing effect. The cover of the baffles can be made of smooth or perforated plates, as desired, which can also be combined on one or both sides or one or two half-covers. An intermediate piece (box) of mm is needed between the air outlet or the air intake of the the NBS and the silencer. Lateral damper Mixing unit Mixing unit Front damper L 50 Models: MWS: Silencer made of galvanised sheet steel and mineral wool ribs are mounted in a galvanised steel frame. MBS: Silencer made of galvanised sheet steel and mineral wool ribs mounted in a galvanised steel frame (half of the surface is covered by a sheet metal plate). Further information can be found in the technical documentation of the MWS/MBS mineral wool silencer. Lateral damper Model Size L Front damper 1 HKP 401x HKP 711x201 3 HKP 894x201 1 HKP 503x HKP 797x252 3 HKP 1003x252 Lateral damper HKP 201x201 HKP 252x252 Further information can be found in the technical documentation of the HKP multi-leaf damper. Z11/20-16

17 Silencer /150 B+60 (30) 30 B (30) H+60 H K H1 30 B1 L Model /1 /2 /3 /1 /2 /3 B B H H K 100 / 200 L 500 / 750 / 1000 / 1250 / 1500 / 1750 / 2000 / 2250 / 3000 Z11/20-17

18 Electric heating register (-BE) Additional module consisting of a galvanised steel frame and a heating coil made of stainless steel and 2 safety temperature controls. Model with or without blades. Example of a connection circuit diagram Without blades With blades Model Circuit diagram Capacity (W) Operating voltage (V) ELECTRIC HEATING REGISTER STAGE 1 STAGE 2 (optional) STAGE 3 (optional) Safety thermostats 85 C Safety thermostats 60 C Black Black Black Black Black Black Brown Brown Blue Blue SCHAKO scope of delivery: B1/B2/B3/B4: Terminals (in the terminal box of the device) T1: Temperature control for autom. restart T2: Safety temperature control, recommended for manual restart R: Electric register Not included in the SCHAKO scope of delivery: M: Pushbutton for manual restart N: Restart from the control unit RA/RAB/RA1: Electrical transmitter for control, monitoring, switching on RA2: "Operation" auxiliary contact L1 RA3: "Operation" auxiliary contact L2 L1: Operation LED L2: Fault LED (1): Connection option 1 (2): Connection option 2 (3): Switch (4): Control unit (5): Fuse (6): OFF (7): Automatic operation (8): ON /OFF Z11/20-18

19 Valves VVP 46 (2-door) VXP (3-door) VMP 46 (4-door) VVP 45 (2-door) VXP 45 (3-door) Type DN Connection K vs (m 3 /h) p S (kpa) K vs bypass (m 3 /h) VVP G 1/2 1 0,7 B VVP ,6 1, VVP G 3/4 B 2,5 1,75 VVP G1B 4 2,8 VXP G 1/2 1 0,7 B VXP ,6 1, VXP G 3/4 B 2,5 1,75 VXP G1B 4 2,8 VMP G 1/2 1 0,7 B VMP ,6 1, VMP G 3/4 B 2,5 1,75 VMP G1B 4 2,8 p max (kpa) Actuator 100 N 105 N 100 SSA STA 100 SSA STA 100 SSA STA VVP G 1/2 1,0 0,70 B 600 VVP ,6 1, SSB (200 N) VVP G1 1/4 B 6, ,4 300 SSB (300 N) VVP G1 1/2 B SSC (300 N) VXP G 1/2 1,0 0,70 B 600 VXP ,6 1, SSB (200 N) VXP G1 1/4 B 6, ,4 300 SSB (300 N) VXP G1 1/2 B SSC (300 N) VMP 45 (4-door) VMP ,0 0,70 10 G 1/2 B 600 VMP ,6 1, SSB (200 N) Type DN Connection V min (l/h) V 100 (l/h) Actuator p min (kpa) p max (kpa) VPI 45 VPI45.15F Rp 1/ VPI45.15F VPI45.20F Rp 3/ VPI45.20F VPI45.25F Rp 1 VPI45.25F VPI45.32F3 32 Rp 1 1/ Version with pressure measuring nipple for p measurement (option) 400 Z11/20-19

20 Actuators Model SSA - Actuating power 100 N - Automatic detection of the valve stroke - Direct mounting - Connecting cable lengths 1.5, 2.5 or 4.5 m - Manual adjustment and position indicator SSA31: Operating voltage 230 V AC, actuator signal 3-point SSA61: Operating voltage 24 V AC/DC, actuator signal V SSA81: Operating voltage 24 V AC, actuator signal 3-point Model SSB - Actuating power 200 N - Automatic detection of the valve stroke - Direct mounting - Connecting cable length 1.5 m - Manual adjustment and position indicator SSB31: Operating voltage 230 V AC, actuator signal 3-point SSB61: Operating voltage 24 V AC/DC, actuator signal V SSB81: Operating voltage 24 V AC, actuator signal 3-point Model SSC - Actuating power 300 N - Automatic detection of the valve stroke - Direct mounting - Manual adjustment with position and direction of rotation indicator SSC31: Operating voltage 230 V AC, actuator signal 3-point SSC61: Operating voltage 24 V AC/DC, actuator signal V SSC81: Operating voltage 24 V AC, actuator signal 3-point Model STA - Actuating power 105 N - Direct mounting - Standard version including 1.2 or 5 m connecting cables - Position indicator - Two-wire connection STA21: Operating voltage 230 V AC, actuator signal 2-point STA71: Operating voltage 24 V AC/DC, actuator signal 2-point or PWM Model SSD - Actuating power > 250 N - Direct mounting Standard version including 1.5, or 4.5 m connecting cables - Position indicator Temperature controls For two-pipe mounting Model RAB20 - Changeover function - Two-point control behaviour - Manual 3-speed fan switch - Control output ON/OFF - Control voltage AC 250 V For four-pipe mounting Model RCC30 - Outputs for On/Off valve actuators - Outputs for three-speed fan - Control either by room temperature or return air temperature, as desired - Standard, Economy, Antifreeze operating modes or OFF - Operating voltage AC 230 V Model RDG - Display with backlight - Automatic switchover with selected fan speed III, II or I - Automatic switchover between heating and cooling mode by means of sensor QAH Connection of return air sensor as an option - Operating modes: Comfort, Economy and Protective modes - PWM regulation as an option - Automatic mode with timer program For two-pipe mounting with electric register Model RCC20 - Outputs for three-speed fan - Control either by room temperature or return air temperature, as desired - Automatic heating/cooling mode switchover - Standard, Economy, Antifreeze operating modes or OFF - Operating mode switchover contact input for remote circuit - Operating voltage AC 230 V SSD31: Operating voltage 230 V AC, actuator signal 3-point SSD81: Operating voltage 24 V AC, actuator signal 3-point SSD61: Operating voltage 24 V AC/DC, actuator signal V DC Z11/20-20

21 Installation Installation in false ceilings is effected by means of fixing lugs attached to the unit. Installation of Minimum distance to obstacles L>300 mm Condensate drain Ø16 mm Check whether the condensate pan is completely emptied by partly filling it. Installation of Minimum distance to obstacles L>400 mm Condensate drain Ø16 mm Check whether the condensate pan is completely emptied by partly filling it. The register threads correspond to standard EN 10226: Heating: external pipe thread EN R1/2 Cooling: external pipe thread EN R 3/4 Maintenance Maintenance of the NBS units is easy. Depending on the degree of soiling, the filter is cleaned or replaced (at least twice a year). The condensate drains must be checked and cleaned once a year. The motorised fan is maintenance-free (self-lubricating bearings). Maintenance is also subject to VDI For maintenance, service, retrofitting, etc., inspection openings in sufficient number and size must be provided on site. Z11/20-21

22 Legend V (m 3 /h) = Volumetric flow V [l/s] = Volumetric flow Q ges (kw) = Total cooling capacity Q s (kw) = Sensible cooling capacity Q (kw) = Heating capacity V WK (l/h) = Water throughput with cooling V WH (l/h) = Water throughput with heating Pa WK (kpa) = Water-side pressure drop with cooling Pa WH (kpa) = Water-side pressure drop with heating T AK ( C) = Air outlet temperature with cooling T AH ( C) = Air outlet temperature with heating rf AK (%) = Relative air outlet humidity with cooling rf AH (%) = Relative air outlet humidity with heating W (W) = Current consumption A (A) = Current intensity L WA [db(a)] = A-weighted sound power level L = Length of box / silencing baffles K = Baffle width f m (Hz) = Octave / centre frequency D e (db/oct) = Insertion loss DN = Diameter, nominal width K vs (m 3 /h) = Nominal flow value of cold water through the fully open valve (H100) at a differential pressure of 100 kpa (1 bar) p s (kpa) = Maximum allowed differential pressure (closing pressure) p max (kpa) = Maximum allowed differential pressure above the control path of the valve for the entire actuating range of the valve/actuator unit Z11/20-22

23 Order details Fan coil unit NBS series Box (P) Model Model Supply air Z Return air A 1 Size 2 3 Model Heat exchanger Box length System with 2 pipes (cooling) -4F System with 2 pipes (heating) -2F System with 4 pipes -4+2F left -LL Register connections right -RR Joint - Connection to connection piece -R Number of connection Filter G3 ( / ) -G3 Filter G4 () -G4 Diameter Filter removal Accessories: top -O Blow box (-PZ) Flange (-FL) left -L right -R bottom -U Suction box (-PA) Flexible connections (-FS-F) Without lateral connection piece - With lateral connection left -L right -R Number of connection pieces (*) Diameter Droplet separator () Mixing unit (-ME) (*) Refer to table Page 15. Electric register (-BE) Silencer Valves Actuators Control units Multi-part filter Order example: PZ/100-1/500/R/3/123 Other plenum box versions can be ordered. Order example: NBS / 4+2F / LL / G3 / R Unless stated otherwise, the thick-frame model will be delivered! Z11/20-23

24 Specification text NBS air-conditioning unit for horizontal installation in false ceilings. In the series, the housing consists of galvanised sheet steel profiles and a heat and sound insulation. The housing of the consists of aluminium profiles, a jacket in sandwich design made of galvanised sheet steel, an interior heat and sound insulation, plastic corners and a circumferential seal. The motorised fan consists of a double-sided intake-operated centrifugal housing with built-in motor, heat exchanger register with galvanised steel frame, aluminium sheets and copper pipes. The filter element consists of a galvanised steel frame and a synthetic filter medium. Version with closed air circulation or mixture of fresh air and air circulation or surrounding air. Product: SCHAKO type NBS - Model Size Heat exchanger - 4F - 2F - 4+2F - Register connections - LL - RR - Filtering efficiency - G3 - G4 (only for ) Selection program for a quick and accurate design Our selection program allows the optimum performance of each model to be determined. Accessories: - Blow box (-PZ) - Suction box (-PA) - Flange (-FL) - Flexible connections (-FS-F) - Mixing unit (-ME) - Droplet separator (only for ) - Multi-part filter - Electric heating register (-BE) - Silencers - Valves - Actuators - Temperature controls Z11/20-24

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