Schako NBS Series Guide

TECHNICAL DOCUMENTATION
SCHAKO | Ferdinand Schad KG Phone [phone]
Steigstraße 25-27 Fax [phone]
D-78600 Kolbingen www.SCHAKO.de | [email protected]
OPERATING CONDITIONS
--- Medium: water
--- Water inlet temperature: from 6 to 45 °C
--- Max. air outlet temperature: 40 C
--- Max. operating pressure: 8 bar
--- Power supply: 230 V 50 Hz AC
--- Maximum relative humidity in the environment: 60%
PERFORMANCE DATA
NBS-100-3 NBS-150-3
V
L
= 1360 m³/h 3529 m³/h
p
s
= 135 Pa 225 Pa
W = 274 W 1300 W
Q = 7.21 kW 16.04 kW
Q
T
= 9.63 kW 22.15 kW
Q
S
= 7.04 kW 16.60 kW
Heating: t
W1
= 45 °C, t
W2
= 40 °C, t
R
= 20 °C
Cooling: t
W1
= 7 °C, t
W2
= 12 °C, t
R
= 27 °C, HR = 47 %
Technical data for the standard model according to (EU) 2016/2281
for product 3, 4-pipe model with ISO Coarse 50% filter at the point of
maximum static performance.
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
INTENDED USE
Intended use as fan coil unit according to Commission
Regulation (EU) 2016/2281 of 30 November 2016
NBS
Fan coil unit

NBS – Fan coil unit
TECHNICAL DOCUMENTATION
Contents
Construction subject to change.
No return possible. Version: 06.05.21 | Page 2
CONTENTS
General description ............................................................................................................................................................ 3
Device description .............................................................................................................................................................. 3
Models, dimensions and weights ....................................................................................................................................... 5
Air filter ............................................................................................................................................................................... 6
Flange ................................................................................................................................................................................. 7
Position of the hydraulic connections ................................................................................................................................ 8
Droplet separator ............................................................................................................................................................... 9
Mixing unit .......................................................................................................................................................................... 9
Flexible connections ......................................................................................................................................................... 10
Supply air and return air boxes ......................................................................................................................................... 11
Silencer ............................................................................................................................................................................. 17
Accessories ....................................................................................................................................................................... 18
Installation ........................................................................................................................................................................ 21
Maintenance ..................................................................................................................................................................... 22
Circuit diagrams ................................................................................................................................................................ 23
Technical data ................................................................................................................................................................... 26
Legend .............................................................................................................................................................................. 33
Order code NBS ................................................................................................................................................................ 34
Order code FA-NBS ........................................................................................................................................................... 35
Order code PL-NBS ........................................................................................................................................................... 36
Order code ZMWS-NBS ..................................................................................................................................................... 37
Order code for LWZ accessories ....................................................................................................................................... 38
Specification text .............................................................................................................................................................. 39

NBS – Fan coil unit
TECHNICAL DOCUMENTATION
General description | Device description
Construction subject to change.
No return possible. Version: 06.05.21 | Page 3
GENERAL DESCRIPTION
NBS room air conditioning modules are units with small
mounting height 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, NBS room
air conditioning modules outdo the performance of standard
fan coil units.
Its compact dimensions and low height make the NBS room
air conditioning modules the perfect solution for horizontal
installation in false ceilings or suspension-type mounting in
industrial halls.
The room air conditioning module series consists of two
product series, a modular unit (NBS -100) and a compact unit
(NBS -150), which can both be delivered, depending on the
desired performance profile, with different motor, register
and filter equipment.
NBS-100
--- Fan group: 1 motor with 1, 2 or 3 fans
--- Motor: 5 speeds
--- Volumetric flow: from 200 to 2826 m³/h
--- Static pressure: from 5 to 160 Pa
--- Cooling capacity: from 1.6 kW to 16.1 kW
--- Heating capacity: from 1.2 kW to 11.9 kW
--- Filtering efficiency: ISO Coarse 50%
As per compliance with eco design requirements
NBS-150
--- Fan group: 1, 2 or 3 motorised fans
--- Motor: 3 speeds
--- Volumetric flow: from 883 to 4697 m³/h
--- Static pressure: from 148 to 310 Pa
--- Cooling capacity: from 6.4 kW to 26.8 kW
--- Heating capacity: from 4.5 kW to 19.4 kW
--- Filtering efficiency: ISO Coarse 50% or ISO Coarse 60%
As per compliance with eco design requirements
OPERATION
The air to be treated is taken in by the fan ② on the
secondary air side ①, filtered in the filter section ③ and
conditioned in the heat exchanger ④.
DEVICE DESCRIPTION
MODELS
NBS-… Fan coil unit
NBS-100… Model 100
NBS-150… Model 150
NBS -…-1… Size 1
NBS -…-2… Size 2
NBS -…-3… Size 3
NBS -…-R2… 2-pipe register 2 pipe rows
NBS -…-R4… 2-pipe register 4 pipe rows
NBS -…-L4… 4-pipe register 4 and 2 pipe rows
NBS -…-W1… Water connection position in air flow
direction on the left and electrical connection
position in air flow direction on the right
NBS -…-W2… Water connection position in air flow
direction on the right and electrical
connection position in air flow direction on
the left
OPTIONS
--- Flange
--- Flexible connection
--- Filter of efficiency ISO Coarse 50% or ISO Coarse 60%
--- Filter removal by pulling it out sideways or optionally
downwards or upwards
--- Droplet separator
--- Mixing unit
--- Plenum box for supply air
--- Plenum box for return air
--- Silencer
ACCESSORIES
--- Hydraulic regulation

NBS – Fan coil unit
TECHNICAL DOCUMENTATION
Device description
Construction subject to change.
No return possible. Version: 06.05.21 | Page 4
STANDARD MODEL PRODUCT NBS-100
1 Housing
--- Galvanised sheet steel profiles.
--- Galvanised sheet steel with a thickness of 1 mm.
--- Sound and thermal insulation of 12 mm.
--- Unpainted.
2 Heat exchanger
--- Galvanised sheet steel frame with aluminium blades and
copper pipes.
--- Manual ventilation/draining system.
--- Connection via ½" male thread for heating.
--- Connection via ¾" male thread for cooling.
3 Condensate pan
--- Stainless steel.
--- Condensate drain Ø 16 mm.
4 Motorised fan
--- The built-in fans are dynamically balanced, double-sided
intake-operated centrifugal blowers with forward directed
blades.
--- One motor with one, two or three fans.
5 Filter
--- Filter of efficiency ISO Coarse 50% according to ISO 16890.
--- Synthetic filter medium in galvanised steel frame.
STANDARD MODEL PRODUCT NBS-150
1 Housing
--- Aluminium profiles.
--- Galvanised sheet steel with a thickness of 1 mm.
--- Plastic corner pieces.
--- Circumferential seal to guarantee tightness.
--- Sound and thermal insulation 28 mm in thickness.
--- Unpainted.
2 – Heat exchanger
--- Galvanised sheet steel frame with aluminium blades and
copper pipes.
--- Manual ventilation/draining system.
--- Connection via ½" male thread for heating.
--- Connection via ¾" male thread for cooling.
3 – Condensate pan
--- Stainless steel.
--- Condensate drain Ø 16 mm.
4 – Motorised fan
--- The built-in fans are dynamically balanced, double-sided
intake-operated centrifugal blowers with forward directed
blades.
--- One motorised fan for size 1, two motorised fans for size
2, and three motorised fans for size 3.
5 – Filter
--- Filter of efficiency ISO Coarse 50% or ISO Coarse 60%
according to ISO 16890.
--- Synthetic filter medium in galvanised steel frame.

NBS – Fan coil unit
TECHNICAL DOCUMENTATION
Models, dimensions and weights
NBS-100-1-L4-C5-2-F0-W1-T0-M0
Construction subject to change.
No return possible. Version: 06.05.21 | Page 5
MODELS, DIMENSIONS AND WEIGHTS
NBS-100
Model B
(mm)
Weights (kg)
Device unit * Plenum box 300 mm Mixing unit
Water
Cooling Heating
-100-1 680 36 9 18.5 1.89 0.89
-100-2 1150 56 13 24.0 3.39 1.69
-100-3 1660 75 17 29.5 5.04 2.55
* = Housing + empty heat exchanger + motorised fan + air filter
SYSTEM (WATER REGISTER VERSION)
R2 = 2-pipe register 2 pipe rows (cooling or heating)
R4 = 2-pipe register 4 pipe rows (cooling or heating)
L4 = 4-pipe register 4 and 2 pipe rows (cooling and
heating)
NBS-150
Model B
(mm)
Weights (kg)
Device unit * Plenum box 300 mm Mixing unit
Water
Cooling Heating
-150-1 874 57 11 20 3.50 1.73
-150-2 1374 77 15 26 5.82 2.97
-150-3 1824 98 18.5 33 7.82 3.95
* = Housing + empty heat exchanger + motorised fan + air filter

NBS – Fan coil unit
TECHNICAL DOCUMENTATION
Air filter
NBS-100-1-L4-C5-2-F0-W1-T0-M0
Construction subject to change.
No return possible. Version: 06.05.21 | Page 6
AIR FILTER
The filter of efficiency ISO Coarse 50% or ISO Coarse 60% (for
type 150 only) 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.
To facilitate filter removal, SCHAKO offers a divided filter.
Classification
C5 = ISO Coarse 50% (standard)
C6 = ISO Coarse 60% (for type 150 only)
NOTE
C5 und C6 correspond to efficiencies G3 and G4 to EN 779
(invalid).
Filter removal
1 = in air flow direction on the left
2 = in air flow direction on the right (standard)
3 = upwards
4 = downwards
Components filter section
Model Filter removal vertical Filter removal sideways
St Dimensions (mm) St Dimensions (mm)
-100-1 2 678 x 148 x 10 2 339x295x10
-100-2 2 1146x148x10 2 573x295x10
-100-3 2 1656x148x10 3 552x295x10
-150-1 2 796 x 198 x 10 2 398x395x10
-150-2 2 1294x198x10 3 431x395x10
-150-3 2 1744x198x10 3 581x395x10
Filter removal upwards and downwards (vertical)
Filter removal left and right (sideways)
-1 -2
-3 -4

NBS – Fan coil unit
TECHNICAL DOCUMENTATION
Flange
NBS-100-1-L4-C5-2-F0-W1-T0-M0
Construction subject to change.
No return possible. Version: 06.05.21 | Page 7
FLANGE
The units are connected to the air ducts by means of a flange.
F0 = without flange (standard)
FZ = with supply air flange
FA = with return air flange
FB = with supply air and return air flange
NOTE
The screws required for installation of the flexible connection
will be delivered together with the ordered items.
Dimensions
Flange NBS-100
Flange NBS-150
Model B B1 Number
of bores
(mm) (mm)
-100-1 735 290 10 (+4 METU)
-100-2 1205 350 12 (+4 METU)
-100-3 1715 312 16 (+4 METU)
-150-1 857
- 4
-150-2 1357
-150-3 1807
Supply air flange
Return air flange

NBS – Fan coil unit
TECHNICAL DOCUMENTATION
Position of the hydraulic connections
NBS-100-1-L4-C5-2-F0-W1-T0-M0
Construction subject to change.
No return possible. Version: 06.05.21 | Page 8
POSITION OF THE HYDRAULIC CONNECTIONS
W1 = In air flow direction on the left (standard)
W2 = In air flow direction on the right
NOTE
The electric connections are fitted on the opposite side of the
hydraulic connections.
Installation
-W1
-W2
NOTE
Register thread to EN 10226 standard:
--- Heating: Pipe male thread EN 10226 R ½”
--- Cooling: Pipe male thread EN 10226 R ¾”
NOTE
Use the air vents always in top position
Cooling water outlet
Heating water outlet
Air vent
Cooling water outlet
Air vent
Heating water outlet
Heating water inlet
Cooling water inlet
Heating water inlet
Cooling water inlet

NBS – Fan coil unit
TECHNICAL DOCUMENTATION
Droplet separator | Mixing unit
NBS-100-1-L4-C5-2-F0-W1-T0-M0
Construction subject to change.
No return possible. Version: 06.05.21 | Page 9
DROPLET SEPARATOR
The droplet separator consists of polypropylene leaves and a
rack made of galvanised or stainless sheet steel.
T0 = without droplet separator (standard)
T1 = with droplet separator with polypropylene blades
and a rack made of galvanised sheet steel.
T2 = with droplet separator with polypropylene blades
and a rack made of stainless sheet steel.
--- Droplet separator available for type 150 only
ATTENTION
The use of a droplet separator is obligatory when operating
with condensate
Maximum admissible air flow to prevent condensate
from spreading.
Model V (m3/h)
-150-1 2520
-150-2 4320
-150-3 5940
MIXING UNIT
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.
M0 = without mixing unit (standard)
M1 = with mixing unit in air flow direction on the left
M2 = with mixing unit in air flow direction on the right
--- The mixing unit of the NBS-100 must have a flange
and a flexible connection
--- The mixing unit of the NBS-150 is not compatible
with a flange or flexible connection during the
intake (secondary air)
NOTE
According to the Regulation (EU) 2016/2281, the admissible
external air proportion (ODA) is <10% of the total air volume
(SEK). If you want an external air proportion of ≥10%,
conditioning (heat recovery) is required!
NBS-100
NBS-150
Model L (mm) Front damper Lateral
damper
-100-1
370
HK 401 x 201 HK 180
201 x 201
-100-2 HK 711 x 201
-100-3 HK 894 x 201
-150-1
1180
HK 503 x 252 HK 180
252 x 252
-150-2 HK 797 x 252
-150-3 HK 1003 x 252
NOTE
Further information can be found in the technical
documentation of the HK multi-leaf damper.
Mixing unit
Flange and
flexible connections
Front damper Lateral damper
Front damper Lateral damper

NBS – Fan coil unit
TECHNICAL DOCUMENTATION
Flexible connections
FA-NBS-100-1-Z1
Construction subject to change.
No return possible. Version: 06.05.21 | Page 10
FLEXIBLE CONNECTIONS
NOTE
Flexible connection is ordered and supplied separately.
The unit is connected to the air ducts by means of a flexible
connection to avoid the transmission of vibration to the duct.
Z1 = 150 mm for supply air
Z2 = 290 mm for supply air
A1 = 150 mm for return air
A2 = 150 mm for return air
NOTE
To connect the flexible connections to NBS, the NBS must be
configured with a flange.
NOTE
The screws required for installation of the flexible connection
will be delivered together with the ordered items.
Dimensions
Flexible connections NBS-100
Flexible connections NBS-150
Model B B1 Number
of bores
(mm) (mm)
-100-1 735 290 10 (+4 METU)
-100-2 1205 350 12 (+4 METU)
-100-3 1715 312 16 (+4 METU)
-150-1 857
- 4
-150-2 1357
-150-3 1807
Return air flexible connection
Supply air flexible connection
Return air flange
Supply air flange