Nortek Ambirad Vision VSX Assembly Manual

AAMBIMBIRRADAD VVISIONISION VSXVSX

RRADIANTADIANT TTUBEUBE HHEATEREATER

AASSEMBLYSSEMBLY IINSTRUCTIONNSTRUCTION MMANUALANUAL

INDEX Section

Introduction and Document Index
Installation Requirements -------------------------------------------------- 1
Assembly Instructions ------------------------------------------------------- 2
User and Operating Instructions ------------------------------------------ 3

WARNINGS

Nortek Global HVAC (UK) Ltd equipment must be installed and maintained in accordance with
the relevant provisions of the Gas Safety (Installations and Use) Regulations 1998 for gas fired
products. Due account should also be taken of any obligations arising from the Health and
Safety at Works Act 1974 or relevant codes of practice. In addition the installation must be
carried out in accordance with the current IEE wiring regulations (BS 7671), BS 6896 (Industrial
& Commercial) and any other relevant British Standards and Codes of Practice by a qualified
installer. All external wiring MUST comply with the current IEE wiring regulations.

Part No. 700016

Nortek Global HVAC (UK) Limited, Fens Pool Avenue, Brierley Hill, West Midlands, DY5 1QA

Doc No. 700016 Page of 16

Introduction.

Welcome to the range of high efficiency
AmbiRad Vision radiant tube heaters. Local
regulations may vary in the country of use and
it is the installers responsibility to ensure that
such regulations are satisfied.

All installation, assembly, commissioning and
service procedures must be carried out by
suitable qualified competent persons to the
statutory regulations in the country of use.

When assembling, installing, commissioning
and servicing is undertaken on radiant tube
heaters specified in these instructions, due care

Document Index.

1 Installation Requirements

1.1 Health & Safety

1.2 Model Definitions

2 Assembly Instructions

2.1 Tools Required

2.2 Assembly Notes

2.2.1 Turbulators

2.2.2 Brackets

2.2.3 Tube Alignment Sections

2.2.4 Couplers

2.2.5 Reflectors

2.2.6 Burner/Heat Exchanger Assembly

2.3 Identification Check List

2.4 Prior to Assembly

and attention is required to ensure that working
at height regulations are adhered to at the
mounting heights specified.

PLEASE READ this document prior to

installation to familiarise yourself with the
components and tools you require at the various
stages of assembly.

All Dimensions shown are in mm unless
otherwise stated.

The manufacturer reserves the right to alter
specifications without prior notice.

2.5 Step by Step Installation

2.5.1 Tubes and Turbulators

2.5.2 Brackets, U Bolts and U Bend

2.5.3 Reflectors

2.5.4 End Caps

2.5.5 Canopies

2.5.6 Canopy End Caps

2.5.7 General

2.6 Detailed Assembly Drawings

3 User and Operating Instructions

3.3 To Start Heater

3.2 To Switch off Heater

3.3 Routine Maintenance Between Service Intervals

3.4 Frequency of Servicing

1. Installation Requirements.

Isolate any electrical supply to the
heater and controller before proceeding.

1.1 Health and Safety

Nortek gas fired heaters must be installed in
accordance with the relevant provisions of the
Gas Safety (Installations and Use) Regulations

1998. Due account should also be taken of any
obligations arising from the Health and Safety
at Works Act 1974 or relevant codes of
practice. In addition the installation must be
carried out in accordance with the current IEE
wiring regulations (BS 7671), BS 6896
(Industrial & Commercial) and any other
relevant British Standards and Codes of

Practice by a qualified installer. Isolate all
electrical supplies to the heater & controller
before proceeding.

For your own safety we recommend the use of
safety boots and leather faced gloves when
handling sharp or heavy items. The use of
protective eye wear is also recommended.

1.2 Model Definitions

VSXUT = Ambirad Vision High efficiency U

Tube heater with painted powered burner, deep
profile stainless steel reflector and end caps,
reflector canopy and end caps in Aluzink.

Doc No. 700016 Page 2 of 16

2. Assembly Instructions.

PLEASE READ this section prior to

assembly to familiarise yourself with the
components and tools you require at the
various stages of assembly. Carefully open the
packaging and check the contents against the
parts and check list.

The manufacturer reserves the right to alter
specifications without prior notice.

2.1 Tools Required.

The following tools and equipment are advisable
to complete the tasks laid out in this manual.

Trestles

4 & 5mm
Allen keys

Leather
Faced
Gloves

Please ensure that all packaging is
disposed of in a safe environmentally

friendly way.

For your own safety we recommend the

use of safety boots and leather faced
gloves when handling sharp or heavy items. The
use of protective eye wear is also
recommended.

Suitable alternative tools may be used.

Pozidrive
Screwdriver

Tape
Measure

Spanner
Set

2.2 Assembly Notes.

Please read these assembly notes in

conjunction with the correct assembly
drawings (figs 7 to 10).

2.2.1 Turbulators

Ensure the correct length and quantity are

inserted into their respective correctly
identified tube(s) as detailed in the assembly
drawings.

2.2.2 Brackets

Tighten clamping ‘U’ bolt arrangement to

tubes ONLY WHERE STATED on the
assembly drawings.

2.2.4 Reflectors.

All reflectors AND canopies must be
positioned/attached to the brackets exactly
as detailed in the assembly drawings.

Remove the protective plastic coating.

2.2.5 Couplers.

Locate and position tube couplers at the end of
the tubes. Ensure socket heads are facing
outwards & the pre-fitted bolts in the couplers
line up with the locating holes in the tubes.

Ensuring the bolts are not over tightened.

Doc No. 700016 Page 3 of 16

2.2.6 Burner and Heat Exchanger
Assembly.

Slide the burner assembly onto the RIGHT

HAND TUBE when viewed from above,

ensuring it is fully engaged.

Slide heat exchanger onto the LEFT HAND

TUBE when viewed from above, ensuring it

is fully engaged. The hose connections
should face vertically.

Secure both assemblies with grub screws.

2.3 Identification check list

COLOUR CODE

Burner

Heat
Exchanger

U Bend

Inner
Reflectors

Outer
Canopy

VSX2M

20/25/30

1x 1x

1x

1x 1x

2x 3x

2x 3x

VSX3M

30/35/40/

45

1x

VSX4M

45/50

1x

1x

1x

4x

4x

COLOUR CODE

Inner End
Caps

Outer
Canopy
End Caps

Tubes

Turbulators

Couplers

VSX2M

20/25/30

2x 2x

2x

2x

2x

2x

VSX3M

30/35/40/

45

2x

2x

3x

2x

VSX4M

45/50

2x

2x

4x

3x

4x

Brackets

No.5
Torque
Screw

M6
Mudwasher

3x 4x

5x

13x 14x 15x

12x

16x

20x

M8 U Bolt

M8
Full Nut

M4 x 10
Pozi Setpin

Doc No. 700016 Page 4 of 16

8x 6x

10x

16x 22x 28x

7x

8x

9x

COLOUR CODE

M6
Washer

M6
Full Nut

M6 x 35
Setpin

VSX2M

20/25/30

4x

6x

4x

VSX3M

30/35/40/

45

6x

10x

6x

VSX4M

45/50

8x

14x

8x

COLOUR CODE

M4
Full Nut

M4
Washer

M6 x 15
Setpin

VSX2M

20/25/30

1x 2x

7x

2x

VSX3M

30/35/40/

45

8x

4x

2.4 Prior to assembly

• Ensure the area in which you are working is safe and clear of obstructions.

• Identify with the components in the check list and in which order they will be assembled.

• Arrange the trestles* in a straight line to allow for length of tubes.

• Remove all protective plastic from underside of Stainless Steel Reflectors / inside of End Caps.

* if saw horses cannot be located, ensure any alternative is sound and can carry the heater weight.
Methodology: To cater for the expansion of the firing leg, all U bolts on the firing leg (except the one

closest to U bend) are to be loose as described below. All reflectors, tubes, brackets and canopies
are bolted together.

VSX4M

45/50

3x

9x

6x

2.5 Step by step installation.

2.5.1 Tubes and Turbulators

1

Locate and position tubes on trestles. After
deciding which end will have the burner, mark out the
position of the first bracket as shown in the assembly
drawings section. Slide brackets over tubes as
shown.

2x 2x 2x

2

VSX50 only: Locate & position the two shorter

tubes and affix to tubes using couplers. Keeping
the tubes in line, tighten the couplers evenly until
the tubes cannot be turned in the couplers.

0x 0x 2x

0x 0x 2x

Doc No. 700016 Page 5 of 16

3

Locate and insert turbulator(s) into tube(s)
ensuring the correct length and quantity are inserted
into the correct tube. See assembly drawings section
for location & length.

2x 3x 3x

CAUTION — SHARP EDGES!

2.5.2 Brackets, U Bolts and U bend.

Fit the M8 U bolts over the tubes into the holes

4

in the bracket & loosely secure with M8 nuts &
washers, noting that all the brackets on the firing
tube (right hand) except the bracket adjacent to the
U bend should have nuts & washers on both sides
of the bracket to allow bracket to be tightened whilst
still allowing a 3mm gap for expansion between the
tube & U bolt. Refer to sketch below..

3x 4x

this stage.

Working at the opposite ends of the tubes to
the burner, locate & position two couplers so that
the socket heads are facing outwards & the pre

-fitted bolts in the couplers line up with the
locating holes in the tubes. Do not fully tighten at

this stage.

2x 2x 5 2x

5x

DO NOT tighten
any of the nuts at

L/H tube

R/H tube

6

Slide U bend into the open end of the couplers
ensuring the pre-fitted bolts engage in the pre-cut
holes in the U tube section. Tighten all four
clamping bolts to provide a tight grip between
tubes & U tube section.

1x 1x

1x

Doc No. 700016 Page 6 of 16

2.5.3 Reflectors.

Remove protective film before starting.

Reflectors are supplied pre-punched and
are universal throughout the VSX series.

7

Starting at the burner end, slide the reflectors
through the brackets until they are all roughly in
position along the heater, referring to the assembly
diagram showing overlaps. Measure the distance
between the end of the burner end tubes & the
centre of the end bracket, This should be
6” (150mm), slide bracket along tubes to adjust,
then tighten U bolts on the end bracket.

2x 3x

3x

CAUTION — SHARP EDGES!

8

Slide end reflector so that the innermost
slotted holes line up with 1st bracket fixing holes,
then fix in place using M6 x 35mm pins, washers
& nuts.

2x 2x

9

slotted hole in 1st reflector, & bolt together using
M6 x 35mm pins, washers & nuts. Bolt 1st & 2nd
reflectors together using end elongated holes in
each. Refer to notes ‘W’, ‘X’, ‘Y’ and Z in fig.12 for
further details.

2x

Slide 2nd bracket to line up with innermost

4x 4x 4x

10

Repeat this procedure referring to the
assembly diagram for quantities used on specific
models, but noting that the final bracket is not
bolted to the reflector. (See photo)

At this stage all the U bolts should be
fully tightened.

Doc No. 700016 Page 7 of 16

Locate M4 pins, washers & nuts into holes in

11

overlapping reflectors as shown.

1x 2x
1x 2x
1x 2x

3x
3x
3x

2.5.4 End Caps

12

Using M4 setpins & washers fix the blank end
cap beneath the reflector profile at the U bend end
with the flanges facing outwards.

3x 3x
3x 3x

2x 2x

13

end cap beneath the reflector profile at the burner
end with the flanges facing outwards.

3x
3x

2x

Using M4 setpins & washers fix the 'cut out'

3x 3x
3x 3x

3x
3x

2.5.5 Canopies

14

Remove protective film before starting.

Slide the outer canopies over the reflectors from
the U bend end ensuring correct location in
reflector profile. Line up burner end canopy flush
with burner end reflector. Overlap canopies as
shown in the assembly diagram.

2x 3x

4x

CAUTION — SHARP EDGES!

15

Adjust canopies so that the holes on top align

with each other as detailed in the assembly
instructions. Locate and fix one No.5 torque screw
on every canopy overlap.

1x 2x

3x

Doc No. 700016 Page 8 of 16

2.5.6 Canopy End Caps

16

Locate 6 off No.5 torque screws. Position the

blank canopy end cap with the end cap flanges
facing inwards, beneath the canopy profile at the
U bend end & fix with screws. Repeat procedure
for 'cut-out' canopy end cap, again ensuring the
flange faces inwards.

2x 2x

12x 12x

2x

12x

CAUTION — SHARP EDGES!

2.5.7 General

17

The heater assembly is now complete and can now be installed. We would recommend that the

burner and heat exchanger be assembled once the heater has bee n installed in the roof space.

1x 1x

1x

1x 1x

1x

2.6 Detailed Assembly Drawings

The following pages show the technical
dimensional details of the VSX heaters.

Please note the heater type, length and

reference number from the delivery/advice note
before identifying the correct model drawing.

Refer to figure 12 for details of ‘W’, ‘X’, ‘Y’ and

‘Z’ fastening and locations.

Doc No. 700016 Page 9 of 16

Figure 1. VSX2M 20/25/30

Y

150

Z

3400mm TUBE

50mm O/LAP

Y

4047mm REFERENCE

W

Z

X

50 mm O/LAP

1365mm 1650mm

976mm TURBULATOR

2600mm (20kW ONLY); 3400mm (25/30KW) TURBULATORS

Z

Y

COUPLER

38mm

Doc No. 700016 Page 10 of 16

Figure 2. VSX3M 30/35/40/45

Y

Z

150

2600mm TURBULATOR

5200mm TUBE

W

Z

X

50mm O/LAP

1880mm 1650mm

50mm O/LAP

Y

5927mm REFERENCE

Z

Y

W

X

50mm O/LAP

50mm O/LAP

1365mm

976mm TURBULATOR

2600mm TURBULATOR

Z

138mm

Y

COUPLER

Doc No. 700016 Page 11 of 16

Figure 3. VSX4M 45/50

Y

Y

Z

50mm O/LAP

W

Z

X

50mm O/LAP

150

5200mm TUBE

Z

Y

7590mm REFERENCE

50mm O/LAP

W

50mm O/LAP

X

1880mm 1880mm 1650mm

COUPLER

Z

Y

W

50mm O/LAP

50mm O/LAP

X

1740mm TUBE

1200mm

976mm TURBULATOR

3400mm TURBULATOR 3400mm TURBULATOR (50kW ONLY)

Z

COUPLER

293mm

Doc No. 700016 Page 12 of 16

Figure 4. VSX Heater Breakdown (3 module shown)

Doc No. 700016 Page 13 of 16

Notes:.

Doc No. 700016 Page 14 of 16

Notes:.

Doc No. 700016 Page 15 of 16

3. User & Operating Instructions.

3.1 To Start the Heater

1. Ensure gas supply is turned on.

2. Electrical supply to the controls is on.

3. Ensure that the controls are correctly set
i.e.;

• Clock is correctly set.

• Heater program is correctly set.

• Required room temp is correctly set

4. Once the heating controller ‘calls for heat’
power will be supplied to the heater(s). The
red neon will then illuminate.

5. After a pre-purge period of 10 seconds the
burner will ignite and the amber neon will
then illuminate.

6. If lockout occurs press the lockout reset
button (if available), or switch off electrical
supply and restart after 15 seconds.

7. If lockout occurs three times consecutively
switch off and isolate the gas and
electricity supplies.
Contact the Nortek Global HVAC (UK) Ltd
Service department.

3.2. To Switch Off Heater

1. Switch off electrical supply to the heater.
The burner will stop and the fan will shut
off.

2. If the heater is to be switched off for
periods in excess of one week it is highly
recommended that both the gas and the
electrical supplies are turned off.

3.3. Routine Maintenance between Service
Intervals

After ensuring that the heater is cold and
mains electric isolated, cleaning of the
reflectors with a soft cloth and a mild
detergent (non solvent based cleaners only)
in water can be undertaken.

Additional removal of dust from the radiant
tubes, burner and heat exchanger can be
undertaken.

3.4 Frequency of Servicing

The manufacturer recommends that to
ensure continued efficient and safe
operation of the appliance it is
recommended that the heater is serviced
annually by a competent person e.g. every
year in normal working conditions but in
exceptional dusty or polluted conditions
more frequent servicing may be required.

The manufacturer offers a maintenance
service.

Details are available on request.
For Service requirements, please contact

Nortek Global HVAC (UK) Ltd.
For further technical and service support

visit our Support Information Database at
www.s-i-d.co.uk

NORTEK GLOBAL HVAC (UK) LTD

[e-mail]

Registered in England No. 1390934. Registered office: 10 Norwich Street, London, EC4A 1BD

Nortek Global HVAC is a registered trademark of Nortek Global HVAC Limited. Because of continuous product innovation, Nortek Global HVAC reserves the right to change product specification without due notice.

Doc No. 700016 Page 16 of 16

Fens Pool Avenue

Brierley Hill

West Midlands DY5 1QA

United Kingdom

Tel: [phone]

Fax: [phone]

www.ambirad.co.uk

Document reference number GB/VS/190A/0815

Replaces GB/VS/190A/0112