Biddle NOZ2 25 User manual

a
Manual
Air heater
Model NOZ2
Version 6.0 - North America
Original Manual English

AIR HEATER
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. . . Contents
1 Introduction 4
1.1 About this manual 4
1.2 How to read this manual 4
1.3 About the unit 5
1.4 Components and accessories 11
1.5 Safety instructions 12
2 Installation 14
2.1 Inspection on delivery 14
2.2 General working method 14
2.3 Determining the location of the unit 16
2.4 Mounting the roof cowl (accessory) 17
2.5 Hanging the unit up 18
2.6 Regulating the discharge direction 21
2.7 Connecting the unit to the central heating system 23
2.8 Connecting the unit to the mains supply 28
2.9 Installing the b-control continuously variable controller 31
2.10 Installing the b-touch control panel 34
2.11 Installing external controls 37
2.12 Unit finishing 42
2.13 Switching ON and checking operation 42
3 Operation with b-control 46
3.1 Introduction 46
3.2 Switching ON and OFF 46
3.3 Regulating the strength 46
4 Operation with b-touch 47
4.1 Introduction 47
4.2 The Home screen 49
4.3 Main menu 52
4.4 Preferences 53
4.5 Settings 54
4.6 Configuration 55
4.7 Maintenance 60
4.8 USB 61
5Errors 64
5.1 Resolving simple problems 64
5.2 Error messages on the control panel 66
5.3 Remedying errors that are accompanied by an error message 67
5.4 Remedying errors that are not accompanied by an error message 70

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6 Maintenance 72
6.1 Introduction 72
6.2 Safety instructions 72
6.3 Cleaning the unit 72
6.4 Replacing or cleaning the filter 73
7 Service 74
7.1 Replacing the fan 74
7.2 Electronics module 75
7.3 Removing the control circuit board 76
7.4 Connecting the control circuit board 76
7.5 Fuses 77
7.6 LEDs 77
7.7 Setting the unit code 78
7.8 Resetting the PIN code 79
7.9 Copying the settings 79
7.10 Updating the software 80
7.11 Composition of the Biddle control cable 82
8 Dismantling 83
9 Addresses 85
Keywords 86

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1. . Introduction
1.1 About this manual
This manual describes the installation, operation and mainte-
nance of the air heater model NOZ2. The manual also pro-
vides instructions and information for servicing activities.
1.2 How to read this manual
1.2.1 Designations used in the manual
The following symbols are used in the manual:
Note:
nRefers to an important section in the text.
Caution:
cIf you do not carry out the procedure or action
correctly, you may cause damage to the unit.
Follow the instructions precisely.
Warning:
wIf you do not carry out the procedure or
action correctly, you may cause physical injury
and/or damage.
Follow the instructions precisely.

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Danger:
dIs used to designate actions that are not
permitted.
Ignoring this prohibition may lead to serious
damage or to accidents resulting in physical
injury.
1.2.2 Symbols used on the unit and in the manual
The following symbols indicate possible risks or hazards. The
same symbols will also be found on the unit.
1.2.3 Related documentation
In addition to this manual, the following documentation is also
supplied with the unit:
• wiring diagram for installation and servicing.
1.3 About the unit
1.3.1 Applications
The air heater is intended for the heating and (depending on
the unit type) ventilation of large, open spaces. The unit is
placed (free-hanging) at the top of the space concerned.
SYMBOL DESCRIPTION
wYou have accessed a section of the unit containing components which carry
a voltage.
Access restricted to qualified maintenance staff only.
Caution is required.
wThis surface or component may be hot. Risk of burns on contact.

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1.3.2 Operation
General
The unit blows currents of warm air downwards. The airflow
rate ensures that the warm air spreads over a large area.
Depending on the setting, the unit can also blow unheated air.
Depending on the implementation, the unit can also ventilate.
The automatic CHIPS control
Depending on the implementation, the unit may be equipped
with an automatic CHIPS control.
The CHIPS control automatically adjusts the strength and heat
of the unit to changing weather conditions. Thus, in all situa-
tions the energy loss is minimal and the comfort maximal.
CHIPS stands for “Corrective Heat and Impulse Prediction Sys-
tem”.
Control when unit ‘on’
For the most efficient effect, it is important that the airflow
just touches the floor and is heated sufficiently. The unit con-
tinuously measures the values that are needed in order to
achieve this:
1. The installation height (entered in the control panel)
2. The room temperature
3. The temperature of the discharged air
As soon as the situation changes, the control adjusts the out-
let flow rate and the temperature of the airflow to that.
Control with unit ‘off’
If the unit is off – at night, for example – it is not active as cli-
mate separation.
If it is off, the unit can indeed still perform other functions:
• The unit can be set to keep the room at a minimal ‘night’
temperature.
• Water-heated models are equipped with integrated frost
protection.

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Note:
nIn some situations the unit does not discharge any
air, even though it is on.
1.3.3 Type designation
The table below provides an overview of the available models
of the unit and the corresponding type designations. In combi-
nation, the type designations constitute the type code, for
instance: NOZ225-H2-Auto-230/22.
Explanation of the type code
T
YPE CODE ELEMENT DESIGNATION MEANING
product series NOZ2general designation for the series
capacity 25 short range
25V short range, suitable for ventilation
50 long range
50V long range, suitable for ventilation
battery type H2 water heating, element is 2 rows thick
H3 water heating, element is 3 rows thick
H6 water heating, element is 6 rows thick
A without heating
control Basic basic control
Auto automatic CHIPS control
mains supply 230/22 230V, split phase, 60 Hz
480/32 480V, three-phase (without neutral wire), 60 Hz
480/52 480V, combination three phase/split phase, 60 Hz

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1.3.4 Type plate
The type plate is located on the top of the unit.
Designations on the type plate
1.3.5 Field of application
The air heater is utilised in large, open spaces. The following
operating limits must be observed:
Application limits for all models
Parameters of use for water-heated models
DESIGNATION MEANING
Type complete type code of the unit
Code configuration code
Noserial number, production week and
year
Mweightofunit
Medium medium
pmax maximum permissible operating pres-
sure
U power supply voltage
Imax max. current
Pmotor max. power consumption by fans
Ambient conditions Temperature 5 °C to 40°C
(41 °F – 104 °F)
Relative air
humidity
20% – 95%, non-
condensing
Power supply voltage see type plate
Power see type plate
Maximum discharge
temperature
NOZ225 45 °C (113 °F)
60 °C(140 °F)
in lower modes
NOZ250 40 °C (104 °F)
60 °C(140 °F)
in lower modes
Maximum operating pres-
sure
see type plate

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Maximum water flow-paths
Caution:
c* A water flow-path up to 125 °C/16 bar (257 °F/16
bar) is only permitted if all units connected have
been set in such a way that the maximum discharge
temperature is not exceeded at the lowest fan
speed.
Note:
nConsult Biddle if you want to connect a unit to a
water flow-path with higher temperatures and higher
pressure.
Warning:
wThe air heater may not be used in potentially
explosive environments, outdoors or in very
dusty or aggressive air conditions.
Biddle shall not be held liable for damage
caused by use in such situations.
TYPE OF UNIT MAXIMUM
POWER
MAXIMUM
PERMITTED DISCHARGE
TEMPERATURE
MAXIMUM WATER
FLOW-PATH
(UNREGULATED)
MAXIMUM WATER
FLOW-PATH
(REGULATED)
NOZ225 H2 10V 45 °C (113 °F) 90/70 °C (194/158 °F) 125 °C/16 bar
(257 °F/16 bar)*
8V 60 °C(140 °F)
H3 10V 45 °C (113 °F) 70/50 °C (158/122 °F) 125 °C/16 bar
(257 °F/16 bar)*
8V 60 °C(140 °F)
H6 10V 45 °C (113 °F) 60/40 °C (140/104 °F) 125 °C/16 bar
(257 °F/16 bar)*
8V 60 °C(140 °F)
NOZ250 H2 10V 40 °C(104 °F) 90/70 °C (194/158 °F) 125 °C/16 bar
(257 °F/16 bar)*
8V 60 °C(140 °F)
H3 10V 40 °C(104 °F) 80/60 °C (176/140 °F) 125 °C/16 bar
(257 °F/16 bar)*
8V 60 °C(140 °F)
H6 10V 40 °C(104 °F) 60/40 °C (140/104 °F) 125 °C/16 bar
(257 °F/16 bar)*
8V 60 °C(140 °F)

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Sound levels
V = max. air flow; T60 = 1.2s; R = 5m; Q = 2
Warning:
wProlonged exposure can cause damage to the
hearing. If necessary, wear hearing protection.
Maximum number of units that can be daisy chained
Take into account the maximum number of units that can be
daisy chained as shown in the table below:
Caution:
cOnly daisy chain units of equal capacity.
Caution:
cWith Auto type unit: The total cable length
between the first and the last unit may be 100m at
maximum.
Note:
nConsult your Biddle advisor if you wish to connect
more units.
1.3.6 Modifications and changes
Without the approval of Biddle, no changes or modifications
may be made to the unit that could adversely affect safety.
MAXIMUM SOUND
PRESSURE LEVEL
LP[DB(A)]
MAXIMUM SOUND
POWER LEVEL LW
[DB(A)]
NOZ225 58 76.1
NOZ250 67 87.3
NOZ2NOZ2V
(VENTILATION)
Basic 5 5
Auto 10 10
Basics per Auto 4 not possible

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1.4 Components and accessories
1.4.1 Components supplied
• adjustment aid, nozzle angles.
1.4.2 Operating package
The unit can be supplied with a basic control or an automatic
CHIPS control. A corresponding operating package is supplied.
Operating package for basic control
•b-control continuously variable controller.
Operating package for automatic CHIPS control
•b-touch control panel;
• Biddle control cable;
• room sensor;
• water-side control (valve and drive).
1.4.3 Accessories
• suspension frame with vibration dampers.
• set of cover caps for nozzles;
• room thermostat;
• flanges;
• roof cowl;
• channel sections;
• filter module;
•dampermodule;
•servomotor.
1.4.4 Components not supplied
The following components required for installation must be
obtained from third parties:
• threaded rods (M8)
• other cabling

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1.5 Safety instructions
1.5.1 Safety in use
Warning:
wDo not put any objects into the inlets and
outlets.
Warning:
wDo not obstruct the unit’s inlets or outlets.It
is permissible to cover a maximum of 2
nozzles with the caps supplied.
Warning:
wThe upper surface of the unit becomes hot
during operation.
Caution:
cIn exceptional situations, water may run out of the
unit. Therefore, do not place anything under the unit
that could be damaged as a result.
1.5.2 Safety issues relating to installation, mainte-
nance and servicing
Warning:
wMount the unit so that the underside hangs at
least 2.8 m above the floor. It should not be
possible to reach the nozzles without the use
of mechanical aids.
Danger:
dThe unit may only be opened by qualified
technical staff.
Warning:
wPerform the following actions before opening
the unit:

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1. Switch the unit off,using the control panel.
2. Wait until the fan has stopped.
Danger:
dThe fan may continue rotating for a while.
3. Allow the unit to cool down.
Caution:
cThe heat exchanger or, as the case may be, the
heating elements, can get very hot.
4. Disconnect the mains supply (switch off the isolation
switch).
Caution:
cFor models NOZ250 with automatic CHIPS
control:
The units are equipped with 2 mains power cables.
Disconnect the mains supply to both mains power
cables.
5. If you are going to carry out maintenance or repairs on
electrical components: switch the mains supply group off.
6. For water-heated models:
shut off the central heating feed (if possible).
Warning:
wThe fins of the heat exchanger are sharp.

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2. . Installation
Warning:
wInstallation activities may only be performed
by technical staff qualified for this purpose.
Warning:
wBefore starting installation: read the safety
instructions.
See also:
1.5 "Safety instructions" on page 12
2.1 Inspection on delivery
• Check the unit and the packaging to ensure that they have
been delivered in good order. Notify the driver and the
supplier immediately if any shipping damage is detected.
• Ensure that all components are present. Notify supplier of
any missing parts immediately.
See also:
1.4.3 "Accessories" on page 11
2.2 General working method
2.2.1 Sequence of operations
Biddle recommends working as follows when installing the
unit:
1. Install roof cowl, if applicable.
2. Install accessories, if applicable.
3. Hang the unit up.
4. For water-heated models (type H):
connect the unit to the central heating system.

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5. Connect the unit to the mains supply.
Caution:
cMake sure that the unit’s power supply voltage
matches the local mains voltage.
The unit’s power supply voltage is displayed on the
type plate.
6. Install the control panel and (any optional) connections to
external controls.
7. Complete the installation of the unit.
8. Switch the mains supply on and check that the unit is
working properly.
General instructions
Some parts of this section only apply to certain models.
Where this is the case, it will be indicated. If no specific model
is referred to, then the description applies to all models.
Note:
nMake sure that you perform all installation
operations that are applicable to your unit.
Check the type plate and consult the manual if in
doubt about the model or type of your unit.
Note:
nDuring the installation period, protect the unit
against damage and penetration of dust, cement, etc.
You can, for instance, use the packaging for
protection.
See also:
1.3.4 "Type plate" on page 8

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2.3 Determining the location of the unit
• Make sure that the structure from which the unit is about
to be suspended can bear at least 4 times the weight of the
unit. The unit’s weight is indicated on its type plate.
• The unit must hang freely in the room. Note the following
dimensions:
Warning:
wThe top of the unit may get hot. The unit
must have at least 20 cm (8") (NOZ225) or
30 cm (12") (NOZ250) clearance from the
ceiling.
Note:
nIn the case of multiple units, where the water valve
must be connected in series, you are advised to hang
the unit with the control circuit board (type Auto) in
the middle.
See also:
1.3.4 "Type plate" on page 8
SIZE DESCRIPTION MINIMUM VA-
LUE
H installation height 280 cm (10 ft.)
Iminimumdis-
tance between
unit and ceiling (in
the case of intake
from the room)
NOZ225 20 cm (8")
NOZ250 30 cm (12")
J minimum distance to walls 3 m (10 ft.)

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2.4 Mounting the roof cowl (accessory)
You have the option of installing a roof cowl if the unit is used
for ventilation.
Conduit sizes
1. Make a hole in the roof.
2. Make a curb 1around the hole.
3. Fit roof covering over the curb.
4. Remove the top 3of the roof cowl by loosening the bolts.
5. Place the roof cowl over the curb.
6. Using screws, attach the cowl to the curb, as at 2.
7. Mount the top 3onto the roof cowl.
8. Seal all cracks between the roof cowl and the roof with a
draught-free and leak-proof finish.
NOZ225 NOZ250
conduit 575 x 575 mm
(22 41/64" x 22 41/64")
800 x 800 mm
(31 1/2" x 31 1/2")

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2.5 Hanging the unit up
2.5.1 Detaching the inlet grille
If you are making use of ventilation accessories, only for
units without heating (type A), you must first remove the
inlet grille.
Caution:
cIn all other cases, do NOT remove the inlet grille.
1. Remove the screws around the inlet grille 1.
2. Remove the inlet grille.
2.5.2 Hanging the unit up
1. If you are using the suspension frame (accessory):
- Attach the suspension frame.
If you are not using a suspension frame:
- Insert four threaded rods. Make sure that the threaded
rods are hanging perpendicularly.
Dimensions for suspending from threaded rods
2. Onto each threaded rod, screw two bolts a few centime-
tres apart.
NOZ225 NOZ250
distance between
threaded rods
710 x 640 mm
(28" x 25 13/64")
935 x 865 mm
(36 13/16" x 34")
screw thread M8 M8

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3. Hang the unit from the threaded rods:
- Hook the threaded rods with the lowest set of bolts in
the key holes on the top of the unit.
- Internally, there is a locking edge under every keyhole.
The bolts must lock in place behind these.
4. Secure the unit by tightening the top bolts against the plat-
ing.
Warning:
wThe suspended unit must be secured.
2.5.3 Mounting the filter module (accessory)
The unit can be fitted with a filter module. The section can be
mounted on the unit or on a damper module.
The illustrations alongside the instructions are based on the
mounting to the unit. The actions required for mounting to a
damper module are the same as this.
1. Place the flange 1of the filter module over the flange 2
of the unit.
Caution:
cPosition the filter module in relation to the unit as
indicated in the illustration. If the module is
positioned in a different direction, cables can
become pinched off.
2. Attach the flanges together, using 12 screws 3.

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2.5.4 Mounting the damper module (accessory)
The unit can be equipped with a damper module. With this, a
connection to a ventilation duct can be opened and closed.
The damper module is supplied in two variants:
• a 1-way module (only suitable for ventilation), and
• a 3-way module (suitable for ventilation and recirculation).
The damper module can be mounted on the unit or on a fil-
ter module.
The illustrations alongside the instructions are based on the
mounting of a 3-way damper module on a filter module. The
actions required for the mounting of a 1-way damper module
to the unit are the same as this.
1. Place the flange 1of the damper module over the flange
2of the unit.
2. Attach the flanges together using 12 screws 3.
3. Connect the servomotor in accordance with the electrical
diagram supplied.
2.5.5 Installing the ventilation ducts (accessories)
If the unit is used for ventilation, you can optionally install a
ventilation duct.
1. Place the interconnecting duct 1over the flange 2of the
unit or the damper module.
2. Attach the interconnecting duct to the flange, using 12
screws.