Nortek REZNOR GUARDIAN GB Series User manual

MANUAL PART NO. D301214 ISS B
INSTALLATION MANUAL
GUARDIAN GB, GR AND GS
COMMERCIAL AIR CURTAIN RANGE
BS EN ISO 12100:2010 Safety of machinery.
BS EN 60204-1:2018 Safety of machinery. Electrical equipment of machines.
BS EN 55014-1:2017 Electromagnetic compatibility.
BS EN 60335-2-30:2009+A11:2012 Safety. Requirements for room heaters to the following
European CE directives- 2006/95/EC - low voltage; 2014/30/EU - electromagnetic compatibility
Please read this document carefully before commencing installation, commissioning and/or servicing.
Leave it with the end user/site agent to be placed in their premises technical file after installation.
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death.
All work must be carried out by appropriately qualified persons.
The manufacturer does not take any responsibility in the event of non-observance of the regulations concerning the connection of the apparatus causing a
dangerous operation possibly resulting in damage to the apparatus and/or environment in which the unit is installed.
AMBIENT, LPHW AND ELECTRIC HEATED

General Information (G)
Guardian air curtain range .................................4
General product information...............................4
Health and safety ...............................................4
Requirements .....................................................5
Clearance distances ............................................5
Electrical ............................................................5
SmartElec controller ............................................5
Important notice to installers ..............................5
Using this manual ..............................................5
Technical Data (TD)
Technical data .....................................................6
Fuses .................................................................7
Dimensions. GS Surface mounted models ...........8
Clearance distances ............................................8
Dimensions. GR Recessed models........................9
Clearance distances ............................................9
Dimensions. GB Bulkhead mounted models ......10
Clearance distances ..........................................10
Program panel dimensions................................11
Component layout ...........................................12
LPHW coil technical data ..................................37
Installation (I)
Installation .......................................................13
Mounting .........................................................13
Electrical supply. ...............................................13
Installation process ...........................................14
Suspending on threaded rods ..........................15
Wall mounting bracket ....................................15
Installation details - LPHW Only.........................16
Program panel ..................................................17
Standard and high capacity fan & heat settings 18
Fan speed setting .............................................18
Ambient and LPHW model................................18
Wiring diagrams. ..............................................19
Installer wiring Ambient single phase ...............19
Protection .........................................................19
Installer wiring Electric heated three phase only 20
Protection .........................................................20
Installer wiring LPHW single phase ....................21
Protection .........................................................21
Optional wiring.................................................22
Controller (C)
Networking.......................................................22
Air curtain addressing .......................................22
Power-up manual reset .....................................23
Ambient & LPHW models..................................23
Standard settings .........................................23
Engineers settings........................................24
Door link settings.........................................24
Link-group interlock.....................................24
All controllers...............................................24
External temperature ...................................24
External temperature offset..........................24
Temperature limits .......................................25
Air return & pipe cold sensors ......................25
Electric Heated models......................................25
Keypad display.............................................25
Normal mode displays..................................25
Normal operation.........................................25
OFF mode....................................................25
Settings mode..............................................25
Settings display............................................26
Setup configurations....................................26
Set fan speed...............................................26
Set temperature...........................................26
Networked air curtains.................................26
Engineer settings .........................................26
Door link settings .......................................26
Link-group lockout.......................................27
External temperature ...................................27
External temperature offset..........................28
Temperature limits ......................................28
keypad sequences.............................................28
Modbus protocol ..............................................29
Modbus address ...............................................29
Modbus function codes supported....................29
Maintenance & servicing (MS)
Maintenance and servicing................................31
Inlet foam filter replacement GS........................31
Inlet foam filter replacement GR ......................32
Honeycomb outlet replacement .......................32
Fault Finding (FF)
Fault finding. ....................................................33
General.............................................................33
Electrically heated units only. ............................33
Program panel. .................................................33
SmartElec fault codes........................................34
Spare Parts (SP)
Spare parts. ......................................................35
General.............................................................35
Parts Replacement (PR)
Parts replacement. ............................................36
Control panel ..................................................36
Heating element ..............................................36
Fan deck...........................................................36
Contents

Page No 4 Reznor, Guardian GB GR and GS, Installation Manual, EN 2020-06, D30121 Iss B
GGuardian air curtain range
General product information
Models
• GS Surface mounted model
• GR Recessed mounted model
• GB Bulkhead mounted model
Three sizes
• 1000mm
• 1500mm
• 2000mm
Three variations
• Ambient (not heated)
• Electrically heated
• LPHW (low pressure hot water)
The new design allows for quick and easy access to
the control panel and the installers terminal block,
the GS range has two access panels on the 1000,
three on the 1500 and four on the 2000. The GR has
hinged access panels which can be removed with
ease
Electric heated versions require a three phase (415v)
electrical supply, whilst all other versions need a
single phase (230v) supply
All units have fans capable of providing standard &
high capacity air duties. Electric & LPHW also offer
standard & high capacity heating outputs.
Units are designed for versatile installation, options
of wall mounted, recessed within a false ceiling,
fitted in a bulkhead, or on drop rods in front of glass
fronted entrances.
A wall mounting bracket is available as an optional
extra. Units can be mounted adjacent to each
other to cover the full door opening across wider
entrances.
All models are supplied with a program panel and
10m length of RJ45 communication cable.
The program panel allows the user to control either
a single air curtain, or a network of up to 16 air
curtains.
Easy programming the end users simply select
whether they require the heat on or off (not ambient
models), the required fan setting (1,2 or 3 speed),
and the outlet temperature setting
Options for BMS compatible via Modbus
communication can be linked to optional external
thermostat for proportional control in various set
temperatures
Health and safety
Before installing, carefully read the instructions and
follow the processes explained by the manufacturer
Check that the temperature ranges given and
those of the location match. The appliance must be
powered with a voltage corresponding to the value
shown on the rating plate.
Ensure that anchoring points are suitable for the
weight and loading of the product and if required,
add suitable reinforcement to the anchoring points
area.
Installing, programming, commissioning, and
maintenance of these products must only be carried
out by suitably qualified and trained technicians and
in full compliance of all applicable regulations and
current best practices.
Due consideration should be taken for workplace
safety, risk assessments and waste disposal.
Any modification of the product may be hazardous
and the manufacturer is not liable for any damage or
injury caused by improper use

Reznor, Guardian GB GR and GS, Installation Manual, EN 2020-06, D30121 Iss B Page No 5
G
Requirements
Clearance distances
For installation and maintenance clearances, please
see the information on page 8 for the GS models,
page 9 for the GR models and page 10 for the GB
models.
Electrical
For full electrical loadings, please refer to the
technical data section on page 6 of this manual.
It is recommended that the electrical supply to the
base unit in the air curtain is via an appropriate
switched isolator, fitted in accordance with the
regulations in force in the country of use and must
be via a fused isolator having a contact separation of
greater than 3mm in all poles.
For safety reasons a good earth
connection must ALWAYS be made to
the heater and control box.
SmartElec controller
Electric heated models have a supply requirement of
415V 3 phase, neutral and earth. Maximum cable
inlet size is 10mm².
Program panel is wired to the control base unit via a
RJ45 pre-wired cable.
Networked air curtain interconnects via a RJ45 pre-
wired cable
Important notice to installers
Before installation, check the local
distribution conditions, supply
voltage and nature of
water and pressure (LPHW), are
compatible.
Installation, assembly, commissioning,
service and maintenance procedures
must be carried out only by suitable
competent qualified persons.
Unauthorised modifications to the
appliance, or departure from the
manufacturer’s guidance on
intended use, or installation
contrary to the manufacturer’s
recommendations may constitute
a hazard.
Note
To ignore the warning and caution notices, and
to ignore the advice from the manufacturer on
installation, commissioning, servicing, or use,
will jeopardise any applicable warranty, such
a situation could also compromise the safe and
efficient running of the appliance itself, and
thereby constitute a hazard.
Using this manual
Contained within the text of the manual, the
symbols for ‘Caution’ and ‘Warning’ these are used
to highlight certain points.
Caution is used when failure to follow
or implement the instruction(s) can
lead to premature failure or damage
to the unit or its component parts.
Warning is used when failure to heed
or implement the instruction(s) can
lead to not only component damage,
but also to a hazardous situation
being created where there is a risk of
personal injury.

Page No 6 Reznor, Guardian GB GR and GS, Installation Manual, EN 2020-06, D30121 Iss B
TD
Technical data
Data Fan speed Unit 1000 1500 2000
All models
Maximum door width L, M, H m 1.0 1.5 2.0
Maximum mounting height standard capacity L, M m 3.0
Maximum mounting height high capacity H m 4.0
Maximum air volume
L m3/h 1150 1730 2300
M m3/h 1440 2270 2880
H m3/h 1800 2700 3600
Maximum velocity at 0 metre
L m/s 6.4
M m/s 8 8.4 8
H m/s 10 10.1 10
Maximum velocity at 1 metre H m/s 5.6 5.2 5.4
Maximum velocity at 2 metre H m/s 3.8 3.5 3.7
Maximum velocity at 3 metre H m/s 2.8 2.5 2.8
Motor power L, M, H W 365 530 730
Noise level @ 3m free field
L dB(A) 52
M dB(A) 55
H dB(A) 59
Program panel control wiring RJ45 (pre-wired cable required)
Cable terminal size 1.5mm^2 MAX
Electric Heated Models
Electrical supply L, M, H 415V 3 phase 50Hz
Heating capacity - standard L, M, H kW 9 12 18
Heating capacity - high L, M, H kW 12 18 24
Total electrical load -per phase standard
L A 13.7 18.3 27.4
M A 13.8 18.4 27.7
H A 13.8 18.5 27.8
Heat current per phase standard
L A 12.53 16.78 25.08
M A 12.51 16.66 25.05
H A 12.44 16.53 25.00
Total electrical load -per phase high
L A 17.9 26.6 35.7
M A 18.0 26.8 36.0
H A 18.0 27.0 36.2
Heat current per phase high
L A 16.73 25.08 33.38
M A 16.71 25.06 33.35
H A 16.64 25.03 33.40
Temperature rise - Standard
(No Jumpers 9/12/18kW)
L °C 28 27 27
M °C 23 24 23
H °C 18 17 19
Temperature rise - High
(Jumpers in 12/18/24kW)
L °C 34 33 33
M °C 29 28 29
H °C 24 22 24
Weight L, M, H kg 34.5 52 64.5
External fuse size (D type MCB) H A 20 32 40

Reznor, Guardian GB GR and GS, Installation Manual, EN 2020-06, D30121 Iss B Page No 7
TD
Ambient Models
Electrical supply L, M, H 230V single phase 50Hz
Total electrical load
L A 1.17 1.52 2.32
M A 1.29 1.74 2.65
H A 1.36 1.97 2.8
Weight L, M, H kg 32 48.5 60
External fuse size (D type MCB) H A 6
LPHW Heated Models
Electrical supply L, M, H 230V single phase 50Hz
Maximum heating capacity standard L, M, H kW 9 12 18
Maximum heating capacity high L, M, H kW 12 18 24
Total electrical load
L A 1.17 1.52 2.32
M A 1.29 1.74 2.65
H A 1.36 1.97 2.8
Temperature Rise - Standard
(9/12/18kW)
L °C 28 27 27
M °C 23 24 23
H °C 18 17 19
Temperature Rise - High
(12/18/24kW)
L °C 34 33 33
M °C 29 28 29
H °C 24 22 24
Weight (incl water) L, M, H kg 38.5 58 72
External fuse size (D type MCB) H A 6
Table 1 Technical data
Standard Capacity is the factory default. High Capacity is achieved by using the Jumpers provided in the
installation pack, (see parts table on page 35) and additional information on standard and high capacity
fan and heat settings on page 18, Standard = default heating capacity.
High = jumpers fitted in terminals 1a to 6a selectable by installer
LPHW kW ratings based upon a flow & return water temperature of 82/72°C
Fuses
All of the circuit boards in the Guardian air curtain range have a control fuse T1H which covers the fans. The
electric model with the SmartElec board has two additional large fuses to protect the heating elements. F2
and F3
Figure 1 Fuse location electric model board shown

Page No 8 Reznor, Guardian GB GR and GS, Installation Manual, EN 2020-06, D30121 Iss B
TD
Dimensions. GS Surface mounted models
Clearance distances
It is recommended that a minimum clearance of 100mm is allowed around the top and front of the unit.
The clearance allows for cable entry and prevents combustible surfaces overheating.
The minimum mounting height (floor to grille outlet) is 1.8m. The recommended maximum mounting height
is 3m for standard fan setting & 4m for high
Figure 2.2 GS Bottom view
Figure 2.1 GS Front view
Figure 2 GS Top view
Reference GS 1000 GS 1500 GS 2000
1 440
2 1094 1620 2148
3 227
4 70
5 132 130 132
6 830 1360 1884
7 306
8 440
9 >100
Figure 2.3 GS Side view
Table 2 GS dimensions

Reznor, Guardian GB GR and GS, Installation Manual, EN 2020-06, D30121 Iss B Page No 9
TD
Table 2 GS dimensions
Reference GR 1000 GR 1500 GR 2000
1 1125 1650 2177
2 457
3 1060 1584 2111
4 70
5 114 112 114
6 830 1360 1884
7 298
8 438
9 273
Clearance distances
It is recommended that a minimum clearance of 100mm is allowed around the case. The clearance allows
for cable entry and prevents combustible surfaces overheating.
The minimum mounting height (floor to grille outlet) is 1.8m. The recommended maximum mounting height
is 3m for standard fan setting & 4m for high.
Figure 3.2 GR Bottom view
Figure 3.1 GR Front view
Figure 3 GR Top view
Figure 3.3 GR Side view
Dimensions. GR Recessed models
Table 3 GR dimensions

Page No 10 Reznor, Guardian GB GR and GS, Installation Manual, EN 2020-06, D30121 Iss B
TD
Dimensions. GB Bulkhead mounted models
Figure 4 GB Top view
Figure 4.1 GB Front view
Figure 4.2 GB Bottom view
Reference GB 1000 GB 1500 GB 2000
1 70
2 114 112 114
3 830 1360 1884
4 226
5 1060 1584 2111
6 448
7 1125 1650 2177
8 436
9 300
10 427-487
Figure 4.3 GB Side view
Table 4 GB Dimensions
Clearance distances
It is recommended that a minimum clearance of 100mm is allowed around the case. The clearance allows
for cable entry and prevents combustible surfaces overheating.
The minimum mounting height (floor to grille outlet) is 1.8m. The recommended maximum mounting height
is 3m for standard fan setting & 4m for high.