Powrmatic LNVx15, LNVx20, LNVx40, LNVx35, LNVx45 User, Installation & Servicing Instructions

...

www.powrmatic.co.uk

LNVx

User, Installation & Servicing Manual

Issue 1.0 September 2018

Doc Ref: M104 Issue 1.0 Sep 2018

ErP COMPLIANT

SEPTEMBER 2018

page no. 2 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Important: This certificate

must be kept with the appliance

Failure to provide a copy of the commissioning sheet invalidates the heater warranty

----------------------------------------------------

Powrmatic Ltd, Hort Bridge, Ilminster, Somerset, TA19 9PS Tel: 01460 53535 Fax: 01460 52341 Web: www.powrmatic.co.uk e-mail: warranty@powrmatic.co.uk

This is to certify that this heater is guaranteed for two years parts and one year labour from the date of original commissioning. The heater must be commissioned within 4 weeks of installation.

To make a claim

In the first instance you must contact your appliance supplier, or installer and provide:-

1. The appliance type and serial number.

2. The original commissioning documentation. As much detail as possible on the fault.

3. Your supplier, or installer, will then contact Powrmatic to make a guarantee claim on your behalf.

Conditions of Guarantee

1. The heater must have been installed by a competent qualified installer, and in accordance with the manufacturer’s instructions, building regulations and local regulations.

2. The heater has been professionally commissioned, within 4 weeks of installation, and a copy of the commissioning sheet returned to Powrmatic.

3. The heater has been maintained on a yearly basis by a competent and qualified servicing company.

4. The heater has been used in accordance with the manufacturer’s instructions.

5. The correct specification fuel has been used.

6. No unauthorised repairs of modifications have been made. Powrmatic ‘General Conditions of Sales’ have been observed.

7. Except for the obligation of Powrmatic Ltd to perform warranty repairs during the guarantee period, Powrmatic will not be liable in respect of any claim for direct or indirect consequential losses, including loss of profits or increased cost arising from loss of use of the heater, or any event arising there from.

Exclusions

Consumables such as gaskets, ignition electrodes, flame rectification electrodes, drive belts, fusible links, control batteries are all excluded from guarantee.

Certificate Of Guarantee

Certificate of Guarantee

page no. 3 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Title Section Contents Page

User Instructions 4

Pre Installation

1.1 Introduction 5 Duties 6 Dimensions 7 Options & Accessories 12

1.2 Technical data 14

1.3 General Requirements 15

Installation

2.1 Fitting the unit 19

2.2 Flue/Combustion Air Duct System 22

2.3 General Identification of Electrical Items 24

2.4 Electrical Cable Installation 25

2.5 Wiring Diagrams 28

2.6 Commissioning and Testing 30

2.7 Servicing 34

Additional Documents

3.1 Fault Finding Flow Chart 38

3.2 Short List of Parts 41

3.3 Gas Conversion 44

Appendices Information required for ecodesign (ErP) Directive 2009/125 46

Users, Installation and Servicing Instructions

CONTENTS

Contents

page no. 4 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

D) Description of Operation

Important: The heater must NOT be controlled by switching ON and OFF the main electrical supply to it.

1) Standard Units

The ignition sequence commences each time the external controls e.g. time clock, room thermostat, controller etc. call for heat. The internal exhaust fan will run and, when sufficient combustion airflow is proved by the air pressure switch, the ignition spark will be generated, the main gas valve opens and the burners will light on HIGH FIRE for the first 30 seconds irrespective of the requirements of the external control. The green ‘ON’ indicator will be illuminated. The heater fan will automatically start 30 seconds after the burners light. After the first 30 seconds, the heat output will then be controlled either to high fire or low fire depending on the requirements of the space being heated and the external controls fitted. When the external controls are satisfied the burners will be turned off and 2½ minutes later the heater fan will automatically stop. If the burners fail to light the control box will make another four attempts at ignition before going into burner lockout. The amber ‘Lockout’ indicator/reset switch will be illuminated.

2) Modulating Units

When the burners are alight, the heat output will be controlled to any point between high and low fire; depending on the requirements of the space being heated and the external controls fitted.

3) Summer / Winter Modes

Certain types of external controls will provide for two modes of operation i.e: Summer: The heater fan alone will run at the dictate of the external controls to provide air movement. Winter: The heater will operate normally.

4) Overheat Thermostat

This operates if high temperatures within the heater are detected, the burners are turned off and a Red indicator lamp on the front panel is illuminated. LNVx15 - 70 units have a single thermostat located inside the heater. LNVx35 & 90 - 140 units have an additional thermostat on the side of the unit at the opposite end to the controls (either thermostat can go to limit and shut off the burners). The fault condition must be identified and rectified and the thermostat manually reset via the red high limit reset switch. When the unit has cooled, identify the limit stat, remove the black cap and press the reset button. The red indicator lamp will go out and the unit is operational again.

If the heater has not been left operational proceed as follows.

A) Checks before operating the Air Heater

The following preliminary checks should be made before lighting the heater(s)

a) Ensure that the ELECTRICAL supply to the heater is switched OFF. b) Check that any warm air delivery outlets are open. c) Check that the thermostat is set. d) Check that the clock control is set to an ON period. e) Check that any other controls are calling for heat.

B) Operating the Air Heater

1. Switch on the electrical supply at the isolator

2. If the Red Limit indicator lamp is illuminated, identify the limit stat, remove the black cap and press the reset button.

3. The startup sequence will commence. After a short delay the burners will light and the green ‘ON’ indicator on the front of the heater will be illuminated.

4. If the burners fail to light the control box will automatically restart the ignition sequence. If after 5 attempts at ignition the burners have still failed to light the control box will go to lockout and the Amber lockout lamp on the front of the heater (or on the low level remote reset, or MC200/MC300 if fitted) will be illuminated. To restart the ignition sequence depress the reset button on the low level reset for about 1-2 seconds.

WARNING: If it is not possible to light the heater after several attempts, contact the installer or local service company.

C) To Shut Down the Air Heater

1) For Short Periods:

Turn the room thermostat to the OFF, or set to 'Summer Mode'.

2) For Long Periods:

Complete step 1 above. Wait for 5 minutes and then turn OFF the electrical supply at the isolator.

User Instructions

page no. 5 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Note: The limit thermostat(s) can only be reset once the unit has cooled down. Unless the cause of the fault condition is readily obvious, for example a power cut whilst the heater was

operating, a service engineer should be contacted.

E) Maintenance

To maintain efficient, reliable and safe operation of the heater it must serviced annually by a qualified person.

F) IMPORTANT

Free access must be maintained to and around the heater for servicing purposes and the air supply to the heater must not be restricted in any way. Combustible materials must not be stored adjacent to the heater.

If at any time a gas leak is suspected, turn OFF the gas supply at the meter and contact the local gas undertaking immediately.

All Powrmatic heaters use gas and electricity to power them, they may also contain moving parts such as pulleys and belts. It would be hazardous to tamper with or attempt to service unless you are a competent person in the field of Gas and Electrical work.

If you have any safety questions reference the servicing and installation of any of our heaters please do not hesitate to contact our head office for expert advice. Your safety is paramount to us.

Gas Safety (Installation & Use) (Amendment) Regulations 2018

It is law that all gas appliances are installed, adjusted and, if necessary, converted by qualified persons* in accordance with the

current issue of the above regulations. Failure to install appliances correctly can lead to prosecution. It is in your own interests and that of safety to ensure that the law is complied with.

* Gas Safe Registered Engineer

The LNVx range are highly efficient, gas fired, fanned circulation air heaters that cover heat outputs of 15kW to 140kW, have a closed combustion circuit and are supplied complete with a flue system.

LNVx heaters are certified for use on Natural Gas, Group H - G20, and Propane - G31 only. Appliance Categories are Cat II2H3P (GB, IE). All LNVx heaters are CE certified and conform to all the European directives stated in section 1.3.1

LNVx heaters are designed to be suspended from suitable roof points or alternatively to be mounted on purpose designed brackets and are intended primarily for heating commercial or industrial premises. All variants are for internal use only.

LNVx heaters feature a closed combustion circuit and have an internal exhaust fan, mounted downstream of the heat exchanger, to evacuate the products of combustion and draw in air for combustion. The air heater must be connected to a flue system that is approved by Powrmatic Ltd.

LNVx heaters may be used where the atmosphere inside the premises could be contaminated e.g. Dust, oil mist etc. but the heaters are not airtight and therefore may not be used in areas classified as hazardous as defined in

BS 5345: Part 2 or areas subjected to significant negative pressures due to extract systems.

LNVx F, LNVx Duo and LNVx V heaters have an axial fan assembly fitted to circulate the air being heated through the formed tube heat exchanger. LNVx CCF units are supplied with a centrifugal fan and LNVx D units for use with ducted systems where the air moving fan is by others or a centrifugal fan section is used adjacent to or remote from the heater. LNVx DH units are for use in air handling units.

Heaters are fitted as standard with inshot burners, a fully automatic control for ignition, flame sensing, gas supply control and safety functions, an internal exhaust fan, main air fan (F and CCF models), and fan/limit thermostat.

Options include High/Low or Modulating burner controls, inlet duct connection, outlet duct connection, 30°, 45° head, 90° outlet bend, vertical/horizontal outlet louvre assembly and a full range of modular duct components.

IMPORTANT Service and Maintenance Engineers shall

ensure that replacement items are fitted,

adjusted and set in accordance with the data and detail set out in these instructions. If in doubt consult Powrmatic Technical Department.

1.1 Introduction

User Instructions

page no. 6 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Model 15 20 25 35 40 45 50 60 70 90 120 140

Output (nominal)

High Fire (max)

kW 14.5 19.0 24.0 34.0 37.5 44.0 50.5 60.0 70.5 90.0 118.5 137.0

Low Fire (min)

kW 8.6 12.7 16.3 23.8 25.5 29.8 33.9 40.8 47.8 65.3 83.5 93.3

Input (nett CV)

High Fire (max)

kW 15.5 20.5 26.0 36.5 40.5 47.0 54.5 65.0 76.5 97.5 127.0 146.0

Low Fire (min) kW 9.53 14.07 18.16 26.08 28.17 32.46 37.41 45.07 52.91 71.65 90.83 101.16

Airflow Volume

LNVx F/CCF/V m

/s 0.42 0.56 0.78 1.11 1.18 1.51 1.51 1.83 1.94 2.81 3.56 3.75

LNVx D

Min m

/s 0.42 0.56 0.78 1.11 1.18 1.51 1.51 1.83 1.94 2.81 3.56 3.75

Max m

/s 0.46 0.62 0.86 1.22 1.30 1.67 1.67 2.02 2.14 3.09 3.91 4.13

Airflow

Throw LNVx F m 10.0 14.0 20.0 28.0 30.0 35.0 35.0 38.0

42.0 44.0 45.0 45.0

Fan Static

LNVx CCF Pa 220 320 220 N/A 150 250 250 250 250 180 290 250

Electrics

Supply

Standard V/ph/Hz 230/1/50

Optional* V/ph/Hz 400/3/50 *on Centrifugal Units Only. 3Ph units shown in brackets ()

LNVx F Run amp 0.40 0.45 0.52 1.14 0.85 1.53 1.57 2.30 2.20 3.06 4.35 4.45

LNVx CCF

Start amp 5.0 8.5 13.3 N/A 18.0 26.3 26.3 29(16.5) 38(18) 31.0 40(14.9) 44(16.8)

Run amp 2.0 3.1 4.2 N/A 5.8 7.6 7.6 10(4.8) 11(5.3) 12.8 17(4.6) 20(4.9)

Fuel

Connection BSP/Rc ¾"

Nominal Inlet Pressure

Nat Gas mbar 20.0

LPG mbar 37.0

Consumption

Nat Gas m

/h 1.64 2.17 2.75 3.86 4.29 4.97 5.77 6.88 8.10 10.32 13.44 15.45

LPG m

/h 0.63 0.83 1.06 1.52 1.66 1.90 2.20 2.65 3.16 4.01 5.10 5.90

Mounting Height

LNVx F/Duo Crossflow

Min m 2.5 3.0

Max m 3.0 5.0

LNVx V Downflow

Min m

4.0 5.0 6.0

Max m 6.0 7.0 8.0 10.0 12.0

Overall Dims

LNVx F

Height mm 430 500 570 532 720 684 684 760 912 810 975 1140

Width mm 997 997 997 1325 997 1325 1325 1325 1325 1950 1950 1950

Depth mm 800 869 819 918 839 938 938 915 915 938 915 915

Install Clearance

LNVx F

Top mm 200

LH Side mm 200

RH Side mm 1000

Rear mm 400

Flue

Diameter mm Ø 80 80 80 100 100 100 100 130 130 130 130 130

Max Length

Flue Only m 12

Room Sealed m 6

Combustion Air Spigot mm Ø 80 80 80 100 100 100 100 130 130 130 130 130

Noise Levels

LNVx F dB(A) 48 47 47 50 58 59 59 60 60 63 64 64

LNVx CCF dB(A) 55 55 54 N/A 60 60 61 62 62 66

67 67

Nett Weight

LNVx F kg 59.5 73.0 76.5 84.0 103 122 122 135 149 202 238 286

LNVx CCF kg 71.0 83.6 86.4 N /A 122 143 143 170 213 329 364 430

Model 15 20 25 35 40 45 50 60 70 90 120 140

Notes:

Fuel Consumption and input figures ba sed upon nett calorific values as follows: Natural Gas (G20) nett CV 34.02 MJ/m

- Propane (G31) nett CV 88.00

MJ/m

• Heaters have efficiency levels which meet with the minimum heater efficiency requirements of UK Part L Building Regulations.

• LNVx heaters comply with the seasonal efficiency and NOx

limits requirements of the Ecodesign regulation (EU) 2015/1188, Directive 2009/125/EC – Lot 21 Tier 1

• Standard heaters configured as High/Low. Optional modulation

available.

• Air handling data is assessed at room ambient conditions

• Throw figures provide the distance to the point where the terminal velocity degrades to 0.25m/s

• Dimensions, weights and clearance data in the table above refer to LNVx F units only - for data on all other models refer to the dimensions page and/or the installation instructions.

• Noise levels are applicable to standard LNVx F and LNVx V models and are measured 5m from appliance in a free field.

• Motor kW, run and start amps apply to standard electrical supply as stated. For optional data contact sales office.

• Optional 3 phase direct drive centrifugal blowers shown in italics within brackets().

• Connection of combustion air duct is not required for ‘flue only’ applications.

• It is the responsibility of the installing contractor to ensure that ductwork is correctly sized and balanced when installing LNVx Centrifugal units.

Technical Specification

LNVx

page no. 7 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Dimensions

LNVx F- Freeblowing

Model

15 20 25 35 40 45 50 60 70 90 120 140

A mm 997 997 997 1325 997 1325 1325 1325 1325 1950 1950 1950

B mm 700 730 730 819 730 819 819 819 819 819 819 819

C mm 430 500 570 532 720 684 684 760 912 810 975 1140

DØ mm 80 80 80 100 100 100 100 130 130 130 130 130

E mm 248 268 268 357 268 357 357 357 357 337.5 337.5 337.5

F mm 198.5 248 318 225 446 320 325 325 476 457 622 787

G mm 120 120 120 142 142 142 142 220 220 220 220 220

H mm 317 317 317 347 317 347 347 347 347 347 347 347

J mm 450 450 450 700 450 700

700 700 700 662.5 662.5 662.5

K mm 230 230 230 278 230 278 278 278 278 278 278 278

L mm 800 869 819 918 839 938 938 915 915 938 915 915

M mm 217.5 217.5 217.5 247.5 217.5 247.5 251 237 237 247 247 247

N mm 117 117 117 145.5 117 145.5 145.5 145.5 145.5 90 90 90

P mm 175 172 245 220 285 221.5 221.5 298 373.5 412 413 481

Q mm 86 125 75 85 95 105 105 82 82 105 82 82

14 B



J CRS

J CRS J CRS

SUSPENSION POINTS M10

GAS ENTRY POINT

ELEC ENTRY

page no. 8 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Dimensions

LNVx Duo- Axial Fan Bi-directional Units

Model

90 120 140

A mm 1950 1950 1950

B mm 819 819 819

C mm 810 975 1140

DØ mm 130 130 130

E mm 337.5 337.5 337.5

F mm 457 622 787

G mm 220 220 220

H mm 347 347 347

J mm 662.5 662.5 662.5

K mm 278 278 278

L mm 1150 1150 1150

M mm 247 247 247

N mm 90 90 90

P mm 412 413 481

Q mm 105 82 82

ELEC ENTRY

GAS ENTRY POINT

J CRSJ CRS

M10 SUSPENSION POINTS

ØD

page no. 9 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Dimensions

LNVx V - Axial Fan Downflow

Model

15 20 25 35 40 45 50 60 70 90 120 140

A mm 997 997 997 1325 997 1325 1325 1325 1325 1950 1950 1950

B mm 700 730 730 819 730 819 819 819 819 819 819 819

C mm 430 500 570 532 720 684 684 760 912 810 975 1140

DØ mm 80 80 80 100 100 100 100 130 130 130 130 130

E mm 248 268 268 357 268 357 357 357 357 337.5 337.5 337.5

F mm 198.5 248 318 225 446 320 325 325 476 457 622 787

G mm 120 120 120 142 142 142 142 220 220 220 220 220

H mm 289.5 289.5 289.5 319.5 289.5 319.5 319.5 319.5 319.5 319.5 319.5 319.5

J mm 260 260 260 385 260 385

385 385 385 460 460 460

K mm 202.5 202.5 202.5 250.5 202.5 250.5 250.5 250.5 250.5 250.5 250.5 250.5

L mm 820 885 835 934 855 954 954 929 929 954 929 929

M mm 217.5 217.5 217.5 247.5 217.5 247.5 251 237 237 247 247 247

N mm 117 117 117 145.5 117 145.5 145.5 145.5 145.5 90 90 90

P mm 175 172 245 220 285 221.5 221.5 298 373.5 412 413 481



J CRS J CRS

DROP ROD

SUSPENSION POINTS M10

ELEC ENTRY

GAS ENTRY POINT

J CRS J CRS J CRS

ELEC ENTRY

GAS ENTRY POINT

DROP ROD

SUSPENSION POINTS M10

page no. 10 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Dimensions

LNVx CCF- Centrifugal Close Coupled Fan Units

Model

15 20 25 35 40 45 50 60 70 90 120 140

A mm 997 997 997 N/A 997 1325 1325 1325 1325 1950 1950 1950

B mm 700 730 730 N /A 730 819 819 819 819 819 819 819

C mm 430 500 570 N/A 720 684 684 760 912 810 975 1140

DØ mm 80 80 80 N/A 100 100 100 130 130 130 130 130

E mm 248 268 268 N/A 268 357 357 357 357 337.5 337.5 337.5

F mm 198.5 248 318 N/A 446 320 325 325 476 457 622 787

G mm 120 120 120 N /A 142 142 142 220 220 220 220 220

H mm 317 317 317 N/A 317 347 347 347 347 347 347 347

J mm 450 450 450 N/A 450 700

700 700 700 662.5 662.5 662.5

K mm 230 230 230 N/A 230 278 278 278 278 278 278 278

L mm 1130 1205 1205 N/A 1275 1450 1450 1450 1450 1365 1450 1450

M mm 217.5 217.5 217.5 N/A 217.5 247.5 251 237 237 247 247 247

N mm 117 117 117 N/A 117 145.5 145.5 145.5 145.5 90 90 90

P mm 175 172 245 285 285 221.5 221.5 298 373.5 412 413 481

S mm 630 630 630 630 630 927 927 927 927 1552 1552 1552

T mm 376 446 516 666 666 631 631 707 858 757 922 1087



ELEC ENTRY

GAS ENTRY POINT

J CRS

SUSPENSION POINTS M10

K H

J CRS J CRS

SUSPENSION POINTS M10

35.0

page no. 11 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Dimensions

LNVx D Ducted Heat Module (No fan)

Model

15 20 25 40 45 50 60 70 90 120 140

A mm 997 997 997 997 1325 1325 1325 1325 1950 1950 1950

B mm 700 730 730 730 819 819 819 819 819 819 819

C mm 430 500 570 720 684 684 760 912 810 975 1140

DØ mm 80 80 80 100 100 100 130 130 130 130 130

E mm 248 268 268 268 357 357 357 357 337.5 337.5 337.5

F mm 198.5 248 318 446 320 325 325 476 457 622 787

G mm 120 120 120 142 142 142 220 220 220 220 220

H mm 317 317 317 317 347 347 347 347 347 347 347

J mm 450 450 450 450 700 700 700 700 662.5 662.5 662.5

K mm 230 230 230

230 278 278 278 278 278 278 278

L mm 804 834 834 834 924 924 924 924 924 924 924

M mm 217.5 217.5 217.5 217.5 247.5 251 237 237 247 247 247

N mm 117 117 117 117 145.5 145.5 145.5 145.5 90 90 90

P mm 175 172 245 285 221.5 221.5 298 373.5 412 413 481

S mm 630 630 630 630 927 927 927 927 1552 1552 1552

T mm 376 446 516 666 631 631 707 858 757 922 1087

GAS ENTRY POINT

ELEC ENTRY

J CRS

J CRS J CRS



SUSPENSION POINTS M10 SUSPENSION POINTS M10

35.035.0

page no. 12 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Fan Plenum Box - (LNVx CCF Models Only)

Mixing Box - (LNVx CCF Models Only)

Model Part Number

Dimensions (mm)

A B C D E F

LNVx 15/20/25 LNVx15/MB 1160 730 696 600 498 570

LNVx 40 LNVx40/MB 1160 880 696 600 648 720

LNVx 45/50 LNVx50/MB 1285 845 994 900 613 685

LNVx 60 LNVx60/MB 1285 920 994 900 688 760

LNVx 70 LNVx70/MB 1285 1070 994 900 838 910

LNVx 90 LNVx90/MB 1285 970 1620 1526 738 810

LNVx 120 LNVx120/MB 1285 1135 1620 1526 903 975

LNVx 140 LNVx140/MB 1455 1300 1620 1526 1068 1140

Model Part Number

Dimensions (mm)

A B C D E

LNVx 15/20/25 LNVx15/FS 750 696 570 480 622

LNVx 40 LNVx40/FS 750 696 720 630 622

LNVx 45/50 LNVx50/FS 850 994 685 595 920

LNVx 60 LNVx60/FS 850 994 760 670 920

LNVx 70 LNVx70/FS 850 994 910 820 920

LNVx 90 LNVx90/FS 850 1620 810 720 1546

LNVx 120 LNVx120/FS 850 1620 975 885 1546

LNVx 140 LNVx140/FS 850 1620 1140 1050 1546

Accessories

30° Downflow Head - (LNVx F Models Only)

90° Downflow Head - (LNVx CCF Models Only)

Heater Options

Model Part Number

Dimensions (mm)

A B C D E

LNVx 15 LNVx15-30DH 376 305 630 280 494

LNVx 20 LNVx20-30DH 446 340 630 350 494

LNVx 25 LNVx25-30DH 516 375 630 420 494

LNVx 35 LNVx35-30DH 478 340 927 350 660

LNVx 40 LNVx40-30DH 666 450 630 570 494

LNVx 45/50 LNVx50-30DH 631 415 927 500 660

LNVx 60 LNVx60-30DH 707 415 927 500 660

LNVx 70 LNVx70-30DH 858 480 927 630 660

LNVx 90 LNVx90-30DH 757 450 757 570 660

LNVx 120 LNVx120-30DH 922 520 757 710 660

LNVx 140 LNVx140-30DH 1087 590 757 850 660

Model Part Number

Dimensions (mm)

A B C D E

LNVx 15 LNVx15-90DH 376 430 630 280 494

LNVx 20 LNVx20-90DH 446 500 630 350 494

LNVx 25 LNVx25-90DH 516 570 630 420 494

LNVx 40 LNVx40-90DH 666 720 630 570 494

LNVx 45/50 LNVx50-90DH 631 650 927 500 660

LNVx 60 LNVx60-90DH 707 650 927 500 660

LNVx 75 LNVx70-90DH 858 780 927 630 660

LNVx 90 LNVx90-90DH 757 720 757 570 660

LNVx 120 LNVx120-90DH 922 860 757 710 660

LNVx 140 LNVx140-90DH 1087 1000 757 850 660

page no. 13 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

Swivel Wall Bracket - ( LNVx F Models Only)

Cantilever Wall Bracket - (LNVx F Models Only)

Notes:

- Dimensions for the swivel and cantilever brackets remain the same for all LNVx models

- Swivel Brackets can not be used with double units

Model Part Number

LNVx 15 - 70 LNVx15-70WB

LNVx 90 - 140 LNVx90-140WB

Model Part Number

LNVx 15 - 70 LNVx15-70SWB

LNVx 90 - 140 N/A

Vertical Louvres (For Use On All Models)

Model Part Number

Dimensions (mm)

A B C

LNVx 15 LNVx15-VL 630 376 65

LNVx 20 LNVx20-VL 630 446 65

LNVx 25 LNVx25-VL 630 516 65

LNVx 35 LNVx35-VL 927 478 65

LNVx 40 LNVx40-VL 630 666 65

LNVx 45/50 LNVx50-VL 927 631 65

LNVx 60 LNVx60-VL 927 707 65

LNVx 70 LNVx70-VL 927 858 65

LNVx 90 LNVx90-VL 757 757 65

LNVx 120 LNVx120-VL 757 922 65

LNVx 140 LNVx140-VL 757 1087 65

Filter Box - (LNVx CCF Models Only)

A D

Model Part Number

Dimensions (mm)

A B C D E

LNVx 15/20/25 LNVx15-FB 696 570 120 626 500

LNVx 40 LNVx40-FB 696 720 120 626 650

LNVx 45/50 LNVx45-FB 994 685 120 924 615

LNVx 60 LNVx60-FB 994 760 120 924 690

LNVx 70 LNVx70-FB 994 910 120 924 840

LNVx 90 LNVx90-FB 1620 810 120 1550 740

LNVx 120 LNVx120-FB 1620 975 120 1550 905

LNVx 140 LNVx140-FB 1620 1140 120 1550 1070

Accessories

page no. 14 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

(All variants)

High Fire Low Fire

Injectors

Burner

Pressure

Gas Rate

Burner

Pressure

Gas Rate

MODEL No. Size (mm) Marked mbar m³/h mbar m³/h

LNVx15 3 1.94 500 13 .1 1.64 5.0 1.01

LNVx20 4 1.94 500 12.3 2 .17 6.0 1.49

LNVx25 5 1.94 500 13.5 2.75 6.5 1.92

LNVx35 5 2.26 580 13.2 3.86 5.8 2.76

LNVx40 8 1.94 500 12.3 4.29 6.0 2.98

LNVx45 10 2.54 750 7. 4 4.97 3.5 3.43

LNVx50 10 2.54 750 9.5 5.77 4.5 3.96

LNVx60 8 2.54 750 10.6 6.88 5.2 4.77

LNVx70 10 2.54 750 9.4 8.1 0 4.6 5.60

LNVx90 8 3.5 1500 6.0 10.32 3.0 7.5 8

LNVx120 10 3.5 1500 6.7 13.44 3.3 9.61

LNVx140 12 3.5 1500 6.2 15.45 2.9 10.7

Injector Sizes & Burner Pressures - Natural Gas - Group H - G20 Net CV (Hi = 34.02MJ/m³)

Nominal Inlet Pressure = 20mbar

Minimum Inlet Pressure = 17.5mbar

(All variants)

High Fire Low Fire

Injectors

Burner

Pressure

Gas Rate

Burner

Pressure

Gas Rate

MODEL No. Size (mm) Marked mbar m³/h mbar m³/h

LNVx15 3 1.36 240 21.3 0.6 8.0 0.39

LNVx20 4 1.36 240 19.8 0.8 9.5 0.57

LNVx25 5 1.36 240 21.3 1.1 10.2 0.74

LNVx35 5 1.6 160 22.5 1.5 11.5 1.1

LNVx40 8 1.36 240 19.5 1.7 9.6 1.17

LNVx45 10 1.6 160 18.4 1.9 8.8 1.31

LNVx50 10 1.6 160 24.2 2.3 12.2 1.6

LNVx60 8 1.6 160 25.4 2.6 12.3 1.85

LNVx70 10 1.6 160 22.9 3.2 11.3 2.15

LNVx90 8 2.26 580 13.5 4.0 7. 2 2.91

LNVx120 10 2.26 580 14.6 5 .1 7.2 3.69

LNVx140 12 2.26 580 13.4 5.9 6.4 4.11

Injector Sizes & Burner Pressures - Propane G31 Net CV (Hi = 88.00MJ/m³)

Nominal Inlet Pressure = 37mbar

Minimum Inlet Pressure = 25mbar

1.2 Technical Data

page no. 15 of 48

LNVx Range Users, Installation & Servicing Instructions Doc Ref M104 issue 1.0 Sep 2018.

1.3.1. Related Documents

All LNVx heaters comply with the following European Directives:

Energy Related Product Directive: 2009/125/EC* Gas Appliance Directive: 2009/142/EC Electromagnetic Compatibility Directive: 2004/108/EC Low Voltage Directive: 2006/95/EC Machinery Directive: 2006/42/EC

Air heater(s) must be installed in accordance with BS6230 and BS5440 plus any relevant requirements of local and national building codes. * where appropriate.

1.3.2 Location

Powrmatic LNVx units are designed to operate within an ambient temperature range of -10 to 25°C.

LNVx heaters can be installed in several ways: i) suspended from ‘drop rods’ via purpose designed M10 suspension fixing points on the heater, ii) attached to our optional wall support brackets or iii) positioned on a level, non-combustible base. In all cases, it is important that all supporting structures have been assessed with regard to the relevant weight loadings.

Consideration should be given to flue routes and points of exit, gas, electrical and control connections. Consideration should also be given to the throw characteristics of the heater, issues of public access and siting of environmental control stations and/or remote temperature sensors where the position needs to be representative of the zone temperature to which they refer.

Where the location of the air heater is such that it might suffer external mechanical damage e.g. from overhead cranes, fork lift trucks, it must be suitably protected.

Heaters should not be installed in hazardous areas or areas where there is a foreseeable risk of flammable or corrosion inducing particles, gases or vapours being drawn into the combustion air or main fan circuits.

Areas where special consideration or advice may be required could include but is not limited to –

• Where de-greasing solvents are present, even in minute concentrations

• Where paint spraying is carried out

• Where styrenes or other laminating products are used

• Where airborne silicone is present

• Where petrol engine vehicles are stored or maintained

• Where dust is present (i.e. wood working or joinery shops)

• Where high levels of extract persist.

Installation in such areas may be possible under specific conditions. Please consult our Technical Department for further information.

1.3.2.1 Sizing of the heater

The heater should be correctly sized for the area that it is heating, Full calculations need to be preformed to ensure the correct KW output heater is fitted (CIBSE elemental methodology can be used, or the Powrmatic Technical Department can provide guidelines).

1.3.3 Electrical Supply

Wiring external to the air heater must be installed in accordance with the I.E.E. Regulations for Electrical Installations and any local regulations which apply. All standard heaters are supplied by 230V - 1ph, 50Hz. The method of connection to the main electricity supply must:-

- facilitate the complete electrical isolation of the unit(s) via a suitable fused isolator (see section 2.4.5 for ratings)

- be in a readily accessible position adjacent to the unit(s)

- serve only the unit(s)

- have a contact separation of at least 3mm in all poles. See the accompanying wiring diagram for the heater electrical connections

LNVx CCF and fan/silencer units can also be supplied for 400V 3N, 50Hz.

1.3.4 Gas Supply

A servicing valve and union to facilitate servicing must be fitted to the gas inlet pipe work of the heater. The gas supply must be completed in solid pipe work and be adequately supported.

Heaters suspended by drop rods, straps or chains must have a flexible connection as the final link between the gas supply pipe work and the heater. Sufficient slack must be left in the connection to take account of normal movement of the heater.

WARNING: When completing the final gas connection to the heater do not place undue strain on the gas pipe work of the heater.

1.3.4.1 Service Pipes

The local gas undertaking should be consulted at the installation planning stage in order to establish the availability of an adequate supply of gas to suit the

1.3 General Requirements

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Powrmatic LNVx15, LNVx20, LNVx40, LNVx35, LNVx45 User, Installation & Servicing Instructions

Specifications and Main Features

Frequently Asked Questions

User Manual