Nordair Niche INDIRECT FIRED AIR HEATER (EBM) User manual

INDIRECT FIRED AIR HEATER (EBM)
INSTALLATION AND OPERATING MANUAL
INDEX Section
General Information -----------------------------------------------------------1
Technical Data ------------------------------------------------------------------ 2
Installation Details -------------------------------------------------------------- 3
DX Coil Information ------------------------------------------------------------4
Gas & Electrical Connections -----------------------------------------------5
Commissioning & Testing ----------------------------------------------------6
Controls ---------------------------------------------------------------------------7
Air Filters -------------------------------------------------------------------------8
Routine Maintenance Schedule -------------------------------------------- 9
Spare Parts -------------------------------------------------------------------- 10
User Instructions ---------------------------------------------------------------11
Wiring Diagrams--------------------------------------------------------------- 12
Fault Finding ------------------------------------------------------------------- 13
General Arrangement Drawing (loose) ---------------------- appendix 1
WARNINGS
1 This appliance must only be installed by a competent person in accordance with the requirements
of the Codes of Practice or the rules in force.
2 All external wiring MUST comply with the current IEE wiring regulations.
3 Warning this appliance must be earthed.
AmbiRad Limited, Fens Pool Avenue, Brierley Hill, West Midlands, DY5 1QA
Part No. 703022
Instruction Manual

2
1. General Information
Before installation, check that the appliance as
described on the packaging label is in
accordance with the correct type and model as
specified on the data plate and complies with the
site requirements.
Please read this document before commencing
installation.
Check that the local distribution conditions of
electricity supply, type of gas and pressure of the
appliance are compatible.
The installation must comply with the
requirements and recommendations of British
Standards BS 6230 1991. “Installation of Gas
Fired Forced Convection Air Heaters for
Commercial and Industrial Space Heating”.
The installation must also be in accordance with
relevant requirements of The Gas
safety (Installation and use Regulations) and
(Amendment regulation 1990) and the Building
and Electrical Regulation (in GB and IEE
Regulations). The requirements of the Local
Building Standards Office, the premises
Insurance undertaking and the Fire Authority
must also be observed.
Unauthorised modification of this appliance or
departure from use in the manner for which it
was intended by the manufacturer or installed in
a manner contrary to these instructions, may
constitute a hazard or jeopardise all warranties.
Deviations should only be carried out after formal
consent has been obtained from the
manufacturer.
Ensure the environment in which the air heater
will be installed will not create a hazard, i.e,
where excessive (volatile) dust, flammable or
corrosive substances and/or vapours and
combustible materials may be present. When
installing outdoor heaters care must be taken to
ensure that unauthorised access to the building
cannot be gained via the appliance or its
ductwork system.
This appliance has been tested and set
according to the data plate before leaving the
factory.
After installation the appliance must be fully
commissioned and the settings re-checked.
This appliance incorporates indirect gas fired
heat exchange modules. The modules are
purpose designed to be incorporated into air
heating appliances and the modules comply with
CE directives.
This appliance is suitable for operation within a
-10°C to +40°C temperature range.
Invalidation of guarantee
The following misuses or maltreatment of Nordair
Niche equipment will render all guarantees, as
set out on the Conditions of Sales, void.
• Failure to install, set up or put to work any part
of the equipment as specified in Nordair Niche
installation, operation and maintenance
instructions.
• Attempting to operate motors and other
electrical equipment with an electrical supply
other than that designated on the motor name
plate, or failing to connect and protect such
equipment in accordance with I.E.E
Regulations and local by-laws.
• Failure to notify Nordair Niche of equipment
damaged on receipt in writing within five days.
• Failure to run equipment within the design
specifications as notified at the time of order.
• Modifications to designed arrangement or
performances without the prior written approval
of Nordair Niche.
• Damage caused to equipment on site through
lack of adequate protection from the elements
or misuse by other trades.
• Failure to observe all normally accepted
engineering practices during installation,
commissioning and subsequent operation of
equipment.
IMPORTANT NOTE
DO NOT USE IMPACT DRIVERS ON PANELS
OR DOOR CLAMPS!
USE M5 ALLEN KEY ONLY!

3
1. General Information cont.
The fan assembly is plated mounted, which is on
a slide rail within the unit for easy removal
should it be require.
The photo below shows the fan assembly within
the unit at various stages of assembly.
EBM fan arrangement in IDF2—IDF3
retaining strap
EBM fan arrangement in IDF4.
Important:
Before the fan is started remove the fan
retaining strap shown in red above, failure to
remove the retaining strap may cause issue
and invalidate any warranties.
Before installation, check that the appliance as
described on the packaging label is in
accordance with the correct type and model as
specified on the data plate and complies with the
site requirements.
The IDFBDX-EBM models use the EBM - Papst
high performance centrifugal fan modules.
Single inlet, direct drive, 2D centrifugal impeller
with circumferential diffuser mounted on an
electronically commutated external-rotor motor
with integrated electronics. Backward curved
impeller blades, inlet nozzle made of galvanised
sheet steel with pressure relief.
Complete unit statically and dynamically
balanced in two planes according to
DIN / ISO 1940 and to balancing quality
G 6.3. EC external-rotor motor with
maintenance-free ball bearings and permanent
lubrication. A wide voltage input 1~200-277V,
50/60 Hz respectively 3~380-480V, 50/60Hz.
Unit can be operated on all standard Electricity
Board networks at identical air performance.
Optimised motor technology, soft start,
integrated current limitation, connection via
brought-out variable cable connector (motor size
084) or via easy-to-mount and robust integrated
terminal box made of aluminium with spring
loaded terminals (motor sizes 112, 150 and 200).
Extremely compact electronics, with adjustable
PID controller (motor sizes 112, 150 and 200);
meets all necessary EMC directives and all
requirements as to current reverse transfer. No
complicated installation with shielded cables
required, very low-noise commutation logic,
100% controllability. Motors with an output of 750
W or higher have the RS485/MODBUS RTU
interface. If structure-borne noise needs to be
decoupled, any such action has to be taken by
the customer.
* To be confirmed

4
2. Technical Data
Model No. Power
supply
TP&N
415v. 50
Hz
Motor
power
kW
Air
volume
m3/sec
DX
cooling
capacity
kW
No. of
stages DX heating
capacity
kW
Gas
heating
input
kW
Gas
heating
output
kW
Gas
rate
m3/hr
Weight
kg
IDF2BDX90
(CS1)*
400.3.50 1.78
1.41 28.0 2 28.0 53.3 49.0 5.63 905
IDF2BDX120
(CS1)*
400.3.50 2.83 1.89 38.0 2 44.8 53.3 49.0 5.63 905
IDF2BDX150
(CS1)*
400.3.50 2.83 2.40 44.0 2 54.0 53.3 49.0 5.63 905
IDF3BDX180
(CS2)*
400.3.50 4.7 2.77 52.0 3 60.8 78.8 72.0 8.33 1260
IDF3BDX200
(CS2)*
400.3.50 4.7 3.11 63.0 3 76.4 78.8 72.0 8.33 1260
IDF4BDX240
(CS2)*
400.3.50 6.14 3.80 66.0 3 81.0 78.8 72.0 8.33 1365
Motor
Power
@
duty
kW
1.63
2.02
2.55
2.86
3.24
4.03
Motor
Current
@
Duty
AMPS
2.47
3.07
3.93
4.33
4.94
6.37
Table 1.
Model No. Pressure
Differential
across
EBM fan Pa
K
Factor
IDF2BDX90
329 280
IDF2BDX120
591 280
IDF2BDX150
952 280
IDF3BDX180
821 348
IDF3BDX200
1035 348
IDF4BDX240
976 438
To calculate the air flow from the pressure differential
across the EBM fan
__________________
Air Flow m³/sec = K √pressure diffrential Pa
———————————-
3600
pressure diffrential Pa = Air Flow m³/sec x 3600
——————————
These calculations are to be used as a guide.
K
2

5
2. Technical Data cont.
Nomenclature IDF 2 B DX 90 S1 I/T/C – EBM
Indirect fired
Airflow 2/3/4
Heat exchanger (Benson)
Heating/cooling coil
Size 90/120/150/180/200/240
S1= without dampers, S2= with dampers
Fan Type
I= Inline, T= Trane, C=Compac
Note: If this is blank, it denotes standard configuration.