Powrmatic VPx Series, VPx35, VPx50, VPx120, VPx140 User, Installation & Servicing Manual

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www.powrmatic.co.uk

VPx

Doc Ref: M205 Issue 1.2 Nov 2018

User, Installation & Servicing Manual

Issue 1.2 November 2018

ErP COMPLIANT

SEPTEMBER 2018

Page 2

Certificate Of Guarantee

Certificate of Guarantee

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.

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

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

Important: This certificate

must be kept with the appliance

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

page no. 2 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 3

Contents

Users, Installation and Servicing Instructions

CONTENTS

Title Section Contents Page

User Instructions 4

Pre Installation

1.1 Introduction 5 Duties 6 Dimensions 7 Accessories 8 Head Plans 8

1.2 Technical data 9

1.3 General Requirements 10

Installation

2.1 Fitting the unit 14

2.2 Flue/Combustion Air Duct System 16

2.3 General Identification of Electrical Items 18

2.4 Electrical Cable Installation 19

2.5 Wiring Diagrams 22

2.6 Commissioning and Testing 24

2.7 Servicing 29

Additional Documents

3.1 Fault Finding Flow Chart 32

3.2 Short List of Parts 35

Appendices Information required for ecodesign (ErP) Directive 2009/125 37

Warnings

When working on this appliance the following warnings must be observed:

Danger: Electricity

Warning: Flammable Materials

Warning: Hot Surfaces

Warning: Contains Moving Parts

Read and understand this Service Manual Instructions before operating or servicing this appliance

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 3 of 40

Page 4

User Instructions

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.

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. VPx35 - 70 units have a single thermostat located inside the heater. VPx90 - 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.

page no. 4 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 5

User Instructions

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 VPx range are highly efficient, gas fired, fanned circulation air heaters that cover heat outputs of 35kW to 140kW, have a closed combustion circuit and are supplied complete with a flue system that can be either vertical or horizontal.

VPx heaters are certified for use on Natural Gas, Group H

- G20*. Appliance Categories are Cat II2H (GB, IE). All VPx heaters are CE certified and conform to all the European directives stated in section 1.3.1

VPx heaters are designed to be floor standing and have a centrifugal fan assembly fitted at the base of the heater to circulate the air being heated past the formed tube heat exchanger.

VPx 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.

1.1 Introduction

as defined in BS 5345: Part 2. They are not suitable for siting externally.

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, fan command module and a limit thermostat.

Options include Modulating burner controls, inlet duct connection, outlet duct connection, 90° outlet bend 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.

* LPG conversion kits available.

The heaters intended primarily for heating commercial or industrial premises. They must not be used where the atmosphere inside the premises could be contaminated e.g. Dust, oil mist etc. or in areas classified as hazardous

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 5 of 40

Page 6

Technical Specification

VPx

Model 35 50 70 90 120 140

Output (nominal)

Input (nett CV)

Air Flow Volume m

Heads 3 4

Airflow

Electrics

Fuel

Overall Dims

Install Clearance

Flue

Combustion Air Spigot mm Ø 100 130

Noise Levels VPx UF dB(A) 60 62 63 68 69 70

Nett Weight VPx UF kg 180 209 287 426 468 542

Throw m 12 22 25 27 30 32

Fan Static

Supply

Connection BSP/Rc ¾"

Nominal Inlet Pressure

Consumption

VPx UF

Diameter mm Ø 100 100 130 130 130 130

Maximum Length

High Fire (max)

Low Fire (min)

High Fire (max)

Low Fire (min)

Standard Pa 250 250 250 180 290 250

Uprated Pa 400 400 400 400 400 400

Standard V/ph/Hz 230/1/50

Optional* V/ph/Hz N/A (400/3/50)

Start Current amp 15.6 26.3 38(18) 34(14) 34(14) 46(29)

Run Current amp 4.7 7.6 11(5.3) 9.8(4.18) 9.8(4.18) 13.1(8.43)

Nat Gas mbar 20.0

LPG mbar 37.0

Nat Gas m

LPG m

Height mm 2184 2286 2381 2607 2607 2722

Width mm 819 819 819 819 819 819

Depth mm 1325 1325 1325 1950 1950 1950

Front mm 1000

Blank Side mm 150 (wall facing side)

Louvred Side mm 500

Rear mm 500

Above mm 1000

Flue Only m 12

Room Sealed m 6

Model 35 50 70 90 120 140

kW 34.0 50.5 70.5 90.0 118.5 137.0

kW 23.8 33.9 47.8 65.3 83.5 93.3

kW 36.5 54.5 76.5 97.5 127.0 146.0

kW 26.08 37.41 52.91 71.65 90.83 101.16

/s 1.11 1.51 1.94 2.81 3.56 3.75

/h 3.86 5.77 8.10 10.32 13.44 15.45

/h 1.52 2.20 3.16 4.01 5.10 5.90

Notes:

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

MJ/m

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

• VPx 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

page no. 6 of 40

- Propane (G31) nett CV 88.00

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

• Noise levels are applicable to standard VPx 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 VPx Centrifugal units.

Page 7

Dimensions

VPx

COMBUSTION

AIR INLET

. 0 5

1 J

EXHAUST AIR OUTLET

ØD

ALTERNATIVE FLUE & COMBUSTION AIR

POSITIONS

1 J

H L

Model

A mm 1325 1325 1325 1950 1950 1950

B mm 819 819 819 819 819 819

C mm 1672 1672 1672 1900 1900 1900

DØ mm 100 100 130 130 130 130

E mm 356 356 356 337 337 337

F mm 1314 1314 1236 1547 1547 1547

G mm 142 142 220 220 220 220

H mm 237 237 237 247 247 247

J mm 255 286 345 345 345 400

J1 mm 512 614 709 707 707 822

K mm 207 256 308 308 308 320

L mm 915 915 915 1485 1485 1485

M mm 685 685 685 685 685 685

35 50 70 90 120 140

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 7 of 40

Page 8

Accessories

Head Plan 1

(35, 50 & 70)

Head Plan 2

(90, 120 & 140)

Side/rear Inlet Spigots Filters Dampers

5 8 6

Model

35 50 70 90 120 140

5 8 6

L mm 915 1485

N mm 995 1620

P mm 900 1525

Notes -

• All dimensions are outside dimensions

• Standard filter specification is 10ppi

• Higher specification filters available on request - contact our sales team for more information

• Standard dampers are manual operation - motorised options available

0 9 6

0 6

6 7

9 6

Head Plans

Head Plan 1

(35, 50 & 70)

Head Plan 2

(90, 120 & 140 only)

page no. 8 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 9

1.2 Technical Data

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

(All variants)

Injectors

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

VPx35 5 2.26 580 13.2 3.86 5.8 2.76

VPx50 10 2.54 750 9.5 5.77 4.5 3.96

VPx70 10 2.54 750 9.4 8 .10 4.6 5.60

VPx90 8 3.5 150 0 6.0 10.32 3.0 7.5 8

VP x120 10 3.5 1500 6.7 13.44 3.3 9.61

VPx140 12 3.5 1500 6.2 15.45 2.9 10.7

High Fire Low Fire

Burner

Pressure

Gas Rate

Pressure

Burner

Gas Rate

Nominal Inlet Pressure = 20mbar

Minimum Inlet Pressure = 17.5mbar

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 9 of 40

Page 10

1.3 General Requirements

1.3.1. Related Documents

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

VPx heaters should be located on a solid and level surface. The location chosen must have adequate space for servicing and air circulation around the air heater as well as an adequate air supply.

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.

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

VPx 90-140 units can also be supplied for 400V 3N, 50Hz.

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

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 building requirements. An existing service pipe must not be used without prior consultation with the local gas undertaking.

page no. 10 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 11

1.3 General Requirements

1.3.4.2 Meters

An existing meter should be checked, preferably by the gas undertaking, to ensure that the meter is adequate to deal with the total rate of gas supply required by all connected equipment.

1.3.4.3. Installation Pipes

Installation pipes should be fitted in accordance with IGE/ UP/2. Pipe work from the meter to the air heater must be of adequate size.

Do not use pipes of a smaller size than the inlet gas connection of the heater.

The complete installation must be tested for soundness as described in the above Code.

1.3.5 Flue System

Only flue systems supplied through Powrmatic Ltd may be used with VPx units. Several configurations of flue and combustion air ducts are available.

The flue must terminate in a freely exposed position and be sited to prevent the products of combustion entering any opening in a building in such concentration as to be prejudicial to health or a nuisance.

Type B22

Installation.

Horizontal Outlet

Type C12 or C32 Installation. Vertical Outlet

Type B22 Installation. Vertical Outlet

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Type C12 or C32 Installation.

Horizontal Outlet

page no. 11 of 40

Page 12

1.3 General Requirements

1.3.6 Ventilation Requirements

Type B flued installations.

Where VPx heaters are installed within the heated space

(ie not in a plant room or an enclosure) and having a

building design air change rate of greater than 0.5/h, additional provision for ventilation is not required.

If the building design air change rate is less than 0.5/h, additional provision for natural or mechanical ventilation

is required. These being:

• Natural Ventilation:

Grilles having a free area of at least 2cm² per kW of rated heat input shall be provided at low level i.e. below the level of the heater flue connection.

• Mechanical Ventilation:

Must ensure that the space air change rate is at least

0.5/h, must be of the ‘input’ type and interlocked to ensure the heaters cannot work if the input system is not working.

Type B flued installations.

Where VPx heaters are installed in a plant room or

an enclosure (i.e. not within the heated space) having

combustion air drawn directly from the room and connected to a flue that evacuates the products of combustion directly from the room additional provision for natural or mechanical ventilation is required.

These being:

• Natural Ventilation:

There must be permanent air vents communicating

directly with the outside air, at high level and at low level.

Plant Rooms

Low level (inlet) 4cm²/kw of total rated net heat input High level (outlet) 2cm²/kw of total rated net heat input

Enclosures

Low level (inlet) 10cm²/kw of total rated net heat input High level (outlet) 5cm²/kw of total rated net heat input

• Mechanical Ventilation:

The minimum flow rate of ventilation shall be 4.14m³/h per kilowatt of total rated heat input.

Type C flued installations.

Where VPx heaters are Installed within the heated

space (i.e. not in a plant room or an enclosure) having

combustion air ducted to the appliance and combustion products ducted to the outside air, NO additional

provision for the supply of either combustion air or for combustion products dilution or additional provision for the supply of air is necessary.

Type C flued installations.

Where VPx heaters are installed in a plant room or

an enclosure (i.e. not within the heated space) having

combustion air ducted to the appliance and combustion products ducted to the outside, air vents shall be

provided and be permanently open.

• To room or internal space

Low level (inlet) 10cm²/kw of total rated net heat input High level (outlet) 10cm²/kw of total rated net heat input

• Direct to outside air

Low level (inlet) 5cm²/kw of total rated net heat input High level (outlet) 5cm²/kw of total rated net heat input.

Typ e C

12 or C32 Installation (these refer to section 2.2

of these instructions)

VPx

Input kW

Typ e B22 Installation (these refer to section 2.2 of

these instructions)

Air vents shall be permanently open. In all cases figures are per heater installed. For multi heater installations the appropriate

values for each heater must be added together

In the

heated

space

Low level

grille.

Free area

cm²

In a plant room,

ventilation to

outside

Low level

grille.

Free area

cm²

High level

grille.

Free area

cm²

In an enclosure,

ventilation to

outside

Low level

grille.

Free area

cm²

High level

grille.

Free area

cm²

Air vents shall be permanently open. Figures are for heaters in plant rooms or

enclosures ONLY In all cases figures are per heater installed. For multi heater installations the appropriate

values for each heater must be added together.

In the

heated

space

Free area grille cm²

Ventilation is to a

room or internal

space

Low level

grille.

Free area

cm²

High level

grille.

Free area

cm²

Ventilation is to a

outside air

Low level

grille.

Free area

cm²

High level

grille.

Free area

cm²

35 36.5 73.0 146.0 73.0 365.0 182.5 n/a 365.0 365.0 182.5 182.5

50 54.5 109.0 218.0 109.0 545.0 272.5 n/a 545.0 545.0 272.5 272.5

70 76.5 153.0 306.0 153.0 765.0 382.5 n/a 765.0 765.0 382.5 382.5

90 97. 5 195.0 390.0 195.0 975.0 4 87.5 n/a 975.0

975.0 4 87.5 48 7.5

120 127.0 254.0 508.0 254.0 1270.0 635.0 n/a 1270.0 1270.0 635.0 635.0

140 146.0 292.0 584.0 292.0 1460.0 730.0 n/a 1460.0 1460.0 730.0 730.0

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VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 13

1.3 General Requirements

1.3.7 Air Distribution System

VPC units used in buildings having a low heat loss i.e. where single units are required to cover a large floor area,and in buildings with high roof or ceiling heights Calecon thermal economiser units may be considered to ensure even heat distribution and minimise stratification. Care should be taken to avoid impeding the air throw with racking, partitions, plant or machinery etc. Various outlet configurations are available as optional extras to modify the air throw pattern to suit particular site conditions.

For VPx UD units, the duct work must comply to current regulations and be correctly calculated to match the particular heaters resistance and air flow.

A full and unobstructed return air path to the air heater(s) must be provided.

1.3.7.1 Ducting Requirements

If the air heater(s) are installed in a plant room, the return air intake(s) and the warm air outlet(s) from the heater(s) must be fully ducted, into and out of the plant room to avoid interference with the operation of the heater.

The openings in the structure of the plant room/enclosure through which the ducting passes must be fire stopped.

Care must be taken to ensure that return-air intakes are kept clear of sources of smells and fumes, and where there is any possibility of pollution of the air by dust, shavings etc., precautions must be taken to prevent contamination.

If necessary, suitable barrier rails should be provided to prevent any combustible material being placed within 900mm of the outlets.

It is recommended that

you have a minimum

of 2000mm from the

heater outlet prior to

any restriction

Air Volume Max Duct Resistance

Model

m³/h (Pa)

VPx35 UD 4000 200

VPx50 UD 5450 250

VPx70 UD 7000 250

VPx90 UD 10100 180

VP x120 UD 1280 0 290

VPx140 UD 13500 250

Airflow

VPx Heater

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 13 of 40

Page 14

2.1 Fitting the Unit

2.1.1 Fitting space requirement

VPx UF

Front View

D* D*B

E* A

Side View

VPx UF

Distance from outside of heater to closest obstacle Distance

A Front mm 1000

B Rear mm 500

C Above mm 1000

Side adjacent to wall mm 150

Opposite Side mm 500

Note: The minimum clearances must be observed for installation and servicing.

Warning: Any combustible material adjacent to the air heater and the flue system must be so placed or shielded as to ensure that its temperature does not exceed 65 °C.

Note: The access door to the controls section may be removed to improve access. Open the door to 90°, remove the earth cable at the bottom, and then lift the door vertically

upwards to disengage the hinge plates. Refit in reverse order. Ensure that the earth cable is refitted.

Before installation, check that the local distribution conditions, nature of gas and pressure, and adjustment of the appliance are compatible.

The air heater must be installed in accordance with the rules in force and the relevant requirements of any fire regulations or insurance company's requirements appertaining to the area in which the heater is located, particularly where special risks are involved such as areas where petrol vehicles are housed, where cellulose

page no. 14 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 15

2.1 Fitting the Unit

spraying is carried out, in wood working departments etc. If necessary consideration should be given to mounting the heater on resilient pads, or equivalent, to minimise transfer of noise and vibration to the structure of the building.

Floor mounted heaters must be installed on a level noncombustible surface.

Heaters mounted at high level must be supported on a purpose designed platform or framework that is suspended from vertical drop rods, chains or straps or mounted on specifically designed cantilever brackets from a non-combustible wall.

The method of installation support must be capable of adequately supporting the weight of the unit (See section

1.2) and any ancillary equipment.

Before installing the heater the existing structure must be inspected to ensure it is suitable.

All supports should be protected against the effects of rust or corrosion.

If the method of mounting allows for any movement of the heater it is essential that all gas, duct, and electrical connections to the heater are made with flexible connections to maintain continuity of connection.

2.1.3 Air Distribution System

2.1.3.1 General

VPC heaters, if required, can be used with duct work either to more precisely define the point of air delivery, and / or provide ducted return air or ducted fresh air inlet.

2.1.3.2 Noise Reduction

Ducting should be connected to the heater spigots via an airtight flexible coupling of noncombustible material.

Before fitting the coupling it must be ensured that a minimum clearance of approximately 15mm will be maintained between the ends of the ducting and the heater spigots.

Sound attenuators may be fitted in inlet and outlet ducts to reduce airborne fan noise. If sound attenuators are used then these must be factored into the total static resistance of the ductwork. Materials used in outlet sound attenuators must be capable of withstanding 100°C air temperature without any deterioration.

2.1.4 Room Thermostat Siting

The room thermostat should be fitted at a point which will be generally representative of the heated area as far as temperature is concerned. Draughty areas, areas subjected to direct heat e.g. from the sun, and areas where the air movement is relatively stagnant e.g. in recesses, should be avoided. The thermostat should be mounted approximately 1.5m from the floor.

Any room thermostat, frost thermostat, time clock etc. must be suitable for switching 230V, 5A and must be of the 'snap action' type to minimise contact bounce.

For electrical connections of external controls see section

2.5 or the accompanying wiring diagram.

The system should be checked to ensure that the installation work has been carried out in accordance with the design requirements.

Particular attention should be given to the correct arrangement of delivery ducts and registers, return air ducts and grills and general adequacy of return air paths.

Ensure that the total duct system resistance does not exceed the available air pressure of the equipment supplied refer to section 1.2. If the duct system resistance is less than the available air pressure of the equipment supplied additional resistance must be introduced e.g. by adjustment of duct outlet nozzles and balancing of the duct system. Conversely if the duct system resistance is greater than the available air pressure of the heater supplied the system resistance must be reduced.

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 15 of 40

Page 16

2.2 Flue/Combustion Air Duct System

The minimum distance between surfaces of the flue pipe and any surfaces made from combustible materials is 300mm. If it is necessary for the flue pipe to pass through a structure made from combustible materials a metal sleeve must be used so that the minimum clearance of 300mm is maintained.

The flue and combustion air ducts supplied with the heater are capable of withstanding their own weight over the allowable flue lengths. Wall bands and bracing brackets, or equivalent, must be used to provide lateral stability and should be used at centres not exceeding 2.5 metres.

All models are supplied as standard with a top flue outlet and the flue outlet and combustion air sockets temporarily fitted.

2.2.1 Conversion to Side Flue Outlet

1. Remove the two blanking plates from the flue / combustion air openings at the side of the unit.

2. Remove the four screws from the exhaust fan outlet flange.

3. Remove the screws securing the fan mounting box to the exhaust header plate.

The maximum permitted length of flue system is 6m, or 12m if the flue outlet only is used. If an offset is required two sets of 45° bends should be used each set being equivalent to 0.5m of flue length. 90° bends may be used but each set will be equivalent to 1.0m of flue length.

All outer joints must be finished with the provided locking bands. A smear of silicon grease to the inside of sockets will assist in fitting components together. All flue and combustion air ducts must be supported independently of the air heater. The flue or flue/combustion air terminal must not be installed so as to be less than:

- 300mm below an opening e.g. window, air brick etc.

- 200mm below eaves or gutter.

- 300mm from an internal or external corner.

- 600mm from a surface facing the terminal.

- 1500mm vertically from another terminal on the same

wall.

- 300mm horizontally from another terminal on the same

wall.

- 2000mm from ground level.

2.2.4. Installation of Flue System

Note: A terminal guard, as supplied by Powrmatic Ltd, must be fitted to horizontal flue terminals.

4. Remove fan assembly and rotate the assembly 90° clockwise.

5 Refit the fan assembly to the exhaust header plate ensuring that the gasket is not damaged, if necessary replace or make good with silicon sealant.

6. Secure the exhaust fan outlet flange to the inside of the side panel and fit the blanking plates to the top panel.

2.2.2. Fitting Flue/Combustion Air Sockets

1. Apply a bead of silicon sealant around the face of the flange on the exhaust fan outlet tube that can be seen from the outside of the heater. Place the flue socket on the outside of the heater to mate with this flange and clamp the two flanges together, on either side of the heater panel using the screws provided. Ensure that the silicon sealant has sealed between the two flanges.

2. Apply silicon sealant and refit blanking plates as required to seal unused panel holes.

2.2.3. General Requirements

See Figures 1a to 2b for the different types of flue installation. In all cases the flue outlet socket must be connected via the provided flue system to outside air.

Notes for all systems. i) Final overall length of adjustable disconnection piece must be between 360 -

415m m. ii) 45° offsets may be used if required. Each set is equivalent to 0.5m of flue length. iii) Where VPx heaters are used in clean environments it is permissible to take the combustion air directly from the heated space.

2.2.4.1. Horizontal System - Rear Outlet

Note: If the outlet is required to the side of the

unit 90° bends may be fitted directly onto the

inlet/outlet spigots on the heater.

1. Locate the position of the flue terminal, allowing for a slight gradient running down from the heater to the terminal of 2° - 3° and cut a hole to suit.

2. Fit the flue terminal, securing via the wall plate and weather with silicon sealant or similar.

3. Fit the twin to concentric adapter to the terminal section and extend the flue and combustion air ducts to the heater using straight lengths.

Fit an adjustable length prior to the unit, to facilitate flue

page no. 16 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 17

Total flue length

12m maximum

Lengths

Adjustable length

ombustion air entry

tted with inlet grille)

Combustion air entry (fitted with inlet grille)

Terminal

90° Elbow

Flue socket

Flashing

Lengths

Adjustable length

Condensate drain length

Terminal

Flue socket

Combustion air entry (fitted with inlet grille)

6m maximum 12m maximum

Combustion air socket

Lengths

Adjustable lengths

Flue socket

Single to twin adaptor

Terminal

Combustion air entry (fitted with inlet grille)

Lengths

Adjustable length

Flue socket

Combustion air entry (fitted with inlet grille)

Terminal

(

2.2 Flue/Combustion Air Duct System

disconnection for servicing. Extend the adjustable lengths to make the final connection to the appropriate heater inlet/outlet spigots.

4. Ensure that internal silicon sealing rings are in place and that all tubes are pushed fully home. Secure concentric lengths with the locking bands provided.

Fig 1a. Individual system - Type C12 horizontal

Single to twin adaptor

90° Elbow

Combustion

air socket

Adjustable length

Flue socket

Lengths

Total flue length

6m maximum

Terminal

C (fi

Fig 1b . Individual system - Type C32 vertical

Terminal

Flashing

m u

a m

Maximum 6m, Minimum 80Ø=1480mm; 10 0Ø=1560mm; 130Ø=1560mm

Combustion air socket

Single to twin adaptor

Lengths

Adjustable lengths

Condensate drain lengths Flue socket

2.2.4.3. Internal Combustion Air System

1. Complete the run of flue sections from the terminal

2.2.4.2. Vertical System - Top Outlet

1. Locate the position of the flue terminal cut a hole in the roof to suit.

spigot to the flue outlet socket of the heater generally as described in 2.2.4.1. and 2.2.4.2., ensuring that the internal silicon sealing rings are in place.

2. It is recommended that both air inlets are utilized and that both are fitted with the mesh inlet plates supplied. In

2. Fit the flashing and the flue terminal so that the lower edge of the outer case is over the top of the flashing. Weather with silicon sealant or similar.

addition a 90° bend should be fitted to the rear inlet, the inlet opening of the bend facing to the side of the heater i.e. away from the main air fan.

Fit a condensate drain length into the flue socket on the heater and an equivalent straight length onto the

Fig 2a. Exhaust only system -Type B22 horizontal

combustion air socket.

3. Fit the twin to concentric adapter to the terminal section and then extend down to the heater using straight lengths.

Combustion air entry

fitted with inlet grille)

90° Elbow

Fit adjustable lengths as the final connection pieces, to facilitate flue disconnection for servicing. Extend the adjustable lengths to make the final connection but do not exceed the maximum extended length so as to maintain joint integrity.

Extend the drainage off take of the condensate drainage length to a suitable gully or drain.

4. Ensure that internal silicon sealing rings are in place and that all tubes are pushed fully home. Secure concentric lengths with the locking bands provided.

Adjustable length

Lengths Flue socket

Combustion air entry (fitted with inlet grille)

Total flue length

12m maximum

Terminal

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 17 of 40

Page 18

Lengths

Adjustable length

Flue socket

Combustion air entry (fitted with inlet grille)

Terminal

2.2 Flue/Combustion Air Duct System

Fig 2b. Exhaust only system - Type B22 vertical

Terminal

Flashing

Lengths

Adjustable length

Condensate drain length

Combustion air entry (fitted with inlet grille)

Flue socket

Combustion air entry (fitted with inlet grille)

2.2.5. Condense Length

We recommend installing an inline condense flue drain when flued vertically, due to the lower flue gas temperatures experienced when the heater is operating at low firing rates.

Other relevant factors include installations where

m u

a m

significant length of the flue is used which may cause chilling, or if heater may be exposed to high winds and heavy rain, which may ingress the flue.

We would always recommend fitting the inline condense drain even if the drain point is capped, should the drain be required in the future. Any clarification can be achieved by consulting with Powrmatic.

The condensate drainage pipe should be run in a standard drain pipe material and have a fall of at least 2.5° in every 50m. Copper or copper based alloy shall not be used for condensate drains. See BS 6896.

Condensate drainage pipe should run and terminate internally to a soil and vent stack or a waste pipe. Alternatively, the condensate can be discharged into the rainwater system or a purpose-made soakway.

2.3 General Identification of Electrical Items

GAS VALVE PRESSURE SWITCH

SECOND HIGH LIMIT RESET. 90-140 only

HIGH LIMIT RESET

HIGH LIMIT INDICATION

BURNER LOCKOUT RESET

BURNER ON INDICATION

EXHAUST FAN

ENGINEERS SWITCH

CONTRACTORS

TERMINALS

PACTROL

FAN COMMAND

INTERFACE BOARD Modulation only)

MAINS

INPUT

BOARD

MODULE

page no. 18 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 19

2.4 Electrical Cable Installation

2.4.1. Electrical Connections

Warning: THIS APPLIANCE MUST BE EARTHED.

Warning: Lockout reset is by a switched Neutral to the controls in the heater.

Warning: Wiring external to the unit must be carried out by an appropriately qualified

person to current IEE regulations for Electrical Installations and any local regulations which apply.

The local electrical supply must be run to a point adjacent to the heater and be suitably terminated to provide an isolation point that will prevent remote activation of the unit during servicing. Wiring should be completed in flexible conduit.

The local electrical supply conditions must be compatible with the electrical data given on the appliance data plate.

Heaters are for use with 230V, 1N, 50Hz supplies.

(230V) via a room thermostat, time clock etc. and, if applicable, the remote low level lockout reset see 2.4.5.

Note: To achieve maximum system efficiency it is recommended that VPx units are controlled by an MC200 or MC300 unit. Simple room

thermostat and thermostat/time clock control systems will not provide optimum system efficiency and fuel savings.

Wiring drawings and instructions are supplied with the respective controller.

2.4.2. Typical Wiring Installation showing remote controller

Key: Mains supply = 2 core and earth MC200 Controller = 8 core and earth alt. MC300 Controller = 6 core screened + LNE Optional MC200 sensor = Screened 2 core* * (screen must be grounded only at the MC200, See

instructions supplied with controller for wiring sizing, Max. 100m)

The method of connection to the main electricity supply must:-

- facilitate the complete electrical isolation of the heater(s) via a suitable fused isolator that will prevent remote activation of the heater during servicing (see section 2.4.5 for ratings).

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

- serve only the heater(s).

- have a contact separation of at least 3mm in all poles. See section 2.5 or the accompanying wiring diagram for

the heater electrical connections.

Reference must be made to Section 2.4.5 to ascertain the electrical loading of the unit(s) being installed so that cables of adequate cross-sectional area are used for the electrical installation. The length of the conductors between the cord anchorage and the terminals must be such that the current carrying conductors become taut before the earth conductor if the cable or cord slips out of the cord anchorage. All external controls must be of an approved type.

Typical wiring

installation

Optional

Remote Controller

(MC200 shown)

Remote

Sensor

(optional)

Fused Isolator

All units are fully prewired and only require final connections for the incoming mains supply. Heaters not supplied with inbuilt time and temperature controls will also require completion of the external control circuit

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

230V Supply shown

(415V option on 90-140)

page no. 19 of 40

Page 20

2.4 Electrical Cable Installation

2.4.3. Wiring

The wiring terminals are located on the electrical panel behind the side door of the heater which firstly has to be opened.

2.4.3.1. Mains Supply

2.4.3.2. Intergral Control Wiring

Mains input of either 230V 50Hz 1Ph or 415V 50Hz 3Ph supply connections are via a separate terminal block. For input power refer to table below.

3 phase 1 phase

2.4.4. External Fuses

Single Phase Units Three Phase Units

Model

VPx35

VPx50

VPx70

VPx90

Running

Current (A)

4.7 10 / 6 N/A N/A

7.6 10 / 10 N/A N/A

11.0 15 / 16 5.3 10 / 10

9.8 15 / 16 4.2 5 / 6

Fuse/MCB Rating (A)

Integral control wiring terminal

Running

Current (A)

V+

COM

SEN1

SEN2

Fuse/MCB Rating (A)

(motor rated Protection Device)

VP x120

VPx140

page no. 20 of 40

9.8 15 / 16 4.2 5 / 6

13 .1 15 / 16 8.5 10 / 10

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 21

- N.O. Thermostat or Relay

- 230v in. ( Delay on, Delay O)

- Accessory Terminal. 4A Fuse Protected

- 230v in. Not used on modulating heaters

MAINS SUPPLY 230V AC 50HZ

- Momentary switch to neutral

- 230v out

2.4.5. Wiring Connections

2.4 Electrical Cable Installation

Controlling circuitry is via a numbered terminal strip wired back to the in-built MC200/CAB controller. If an external control panel is to be used, then these terminals must be used. Connection terminals are:

terminal 1 230V Heat Low Demand terminal 3 230V Main Fan Only terminal 4 & 5 Heat High Circuit terminal 6 Lockout indication - 230V Output terminal 7 Burner reset - Neutral Switch terminal 8 0-10V d.c. Modulation terminal 9 0V Modulation terminal 10 Live to Controller terminal 11 Neutral to Controller terminal E Earth to Controller

Wiring terminal strip for External Controller

1 1

0 1

9 8 7 6 5 4 3 2 1

L Modulating (-) Modulating (+) 0-10v

230v Supply for Controller

Lockout Reset Lockout Indication

High Fire

Call for Fan Only 230v Out Call for Heat

21 3 4 5 6 7 8 9 10 11 12

* when used

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Heat On Signal 230V

Fan Only Signal 230V

Input 230V

Output 230V

High Fire

Circuit

Lockout Signal 230V

*Lockout Reset

(Switched Neutral)

t10

0Vdc

0-10 V d c

*Modulating signal

t11

Live Output

230V Supply

for Controller

Earth

Neutral

page no. 21 of 40

Page 22

2.4 Electrical Cable Installation

2.4.6. Interconnecting Wiring:

2.4.6.1. VPx High / Low to Remote MC200

Warning: External controls MUST be powered via heater terminal 10, 11 and Earth

2.4.6.2. VPx Modulation to Remote MC200

page no. 22 of 40

Warning: External controls MUST be powered via heater terminal 10, 11 and Earth

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 23

VPx High / Low Internal Wiring 1pha

2.5 Wiring Diagrams

Blk

Gry

Brn

21 C

LIMIT

STAT2

(when

is fitted).

connections

Stat extension

secondary stat

T6A

21 C

LIMIT

STAT1

Red

Gry

Wht

RED NEON

Red Neon

Terminal 1

Pactrol

RESET

AMBER

INDICATOR/

SUPPLY

FAN

FAN MOTOR

CENTRIFUGAL

NLE

G/Y 2.5

Br 2.5

Blu 2.5

230V AC

50HZ 1PH

MAINS SUPPLY

Blu 1.0

CONTROL

NLE

Or 1.0

SIGNAL

GREEN NEON

G/Y 1.0

LIMIT

STAT1

Blu

Red

Grn

Blu

Grn

450mm

AIR

21 C

450mm

SWITCH

PRESSURE

Yel

Gry

3-PHASE

FAN

EXHAUST

LNEEN

Red

Blk

G/Y 0.5

OPTION

400V AC

50HZ 3PH

MAINS SUPPLY

T6A

GAS

VALVE

L2L

Blu

SUPPLY

FAN MOTOR

CENTRIFUGAL

Gry 1.5

Blk 1.5

Br 1.5

Grn/Y 1.5

Hi-Lo

Head

Gas Valve

Yel

Controller, L

Controller, N

Controller, E

18171615141

Blu

Engineer's Switch

(if fitted)

Grn

CON 1CON 4

PACTROL

CON 5

Blu 1.0

Or 1.0

Br 1.0

Blk 0.5

GV PACTROL

Heat

Aux 230v out

Fan

Lockout Ind.

Lockout Reset

Hi-Fire

345

G/Y 0.5

JT 1 JT 2

CON 6 CON 7

MicroGas P25

CON 3

NCNOC

O N

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 23 of 40

Page 24

2.5 Wiring Diagrams

VPx Modulation Internal Wiring 1pha

Blk

Gry

Brn

LIMIT

connections

Stat extension

21 C

STAT2

(when

is tted).

secondary stat

LIMIT

21 C

STAT1

Red

Gry

Wht

Pactrol

Red Neon

MAIN

FAN(S)

Terminal 1

G/Y 1.0

Or 1.0

AIR

SWITCH

LIMIT

STAT

C 21

Blu

RESET

AMBER

INDICATOR/

Blu

Grn

Blu

Red

PRESSURE

Yel

Gry

FAN

GAS

EXHAUST

Red

Blk

G/Y 0.5

VALVE

G/Y 0.5

Yel

Main loom assembly

Wiring Legend

Loom sub-assembly

Wire size: 0.5mm

16151

Blu

Wire size: 1.0mm

Grn

Bullet connector

Spliced connection

Male

456

CON 1

CON 4

PACTROL

GV PACTROL

MicroGas P25

CON 5

Blu 1.0

Or 1.0

Br 1.0

Blk 0.5

SWTRL

G/Y 0.5

JT 2

JT 1

CON 6 CON 7

CON 3

NCNOC

Female

page no. 24 of 40

0v-

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 25

2.6 Commissioning and Testing

Gas Safety (Installation & Use) (Amendment) Regulations

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

2.6.1. Electrical Installation

Checks to ensure electrical safety must be carried out by a qualified person.

2.6.2. Gas Installation

For new installations, the whole of the gas installation, including the meter, should be inspected and tested for soundness and purged in accordance with the recommendations of IGE/UP/1 (Edition 2) or IGE/UP/2A as appropriate.

2.6.5. Operating the Air Heater

NOTE: On initial lighting of the heater(s), it may take some time to purge the internal pipe work of air.

IMPORTANT: The internal pipe work of the appliance has been tested for soundness before leaving the factory. After establishing the main burners test round the gas inlet

connection using a leak detection fluid.

1. Switch on the electrical supply at the isolator.

NOTES: If the red indicator illuminates, remove the adjacent black cap and press the High Limit Reset button. If the amber rocker switch illuminates, depress the switch for 2 seconds to reset the burner lockout.

2. The ignition sequence should now commence. After a delay of approximately 45 seconds the ignition spark will be generated and the main gas valves energized. The burners will then light.

2.6.3. Air Distribution System

The system should be checked to ensure that the installation work has been carried out in accordance with the design requirements.

Particular attention should be given to the correct arrangement of delivery ducts and registers, return air ducts and grills and general adequacy of return air paths.

Ensure that the duct work is balanced so that the specified motor running currents are achieved See section

1.2

2.6.4. 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 all warm air delivery outlets are open. c) Check that all external controls are calling for heat. d) If an MC200 or MC300 is being used ensure that the

control is set to winter operation.

3. If the burners fail to light the control box will complete a further four ignition attempts. If at the end of five attempts the burners have still not lit the control box will go to lockout and the amber rocker switch will be illuminated. To restart the ignition sequence depress the illuminated reset button for about 1-2 seconds.

4. SHUT OFF Set the external controls to OFF or MIN.

2.6.6 Adjustments

2.6.6.1. Burner Gas Pressures

This is set for the required heat input before despatch. High and low pressures should be checked in the following manner:

2.6.6.1.1. High/Low Regulation

1. Set external controls to ensure the main burner is off. Open the side access panel. Connect a pressure gauge to the burner pressure test point on the multifunctional control.

2. Set external controls to turn on the main burner and maintain high fire. Compare the measured burner gas pressure to that stated on the data plate. In addition it is advisable to check the gas rate using the gas meter

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 25 of 40

Page 26

2.6 Commissioning and Testing

dial pointer ensuring that no other appliances supplied through the meter are in operation.

3. Repeat 2 above with external controls set to maintain low fire.

4. If it is necessary to adjust either the high fire or low fire pressures proceed as follows after levering off the plastic cover from the High/Low regulator.

Note: High fire setting must be adjusted first after which the low fire setting can be set. Any adjustment of the high fire setting alters the minimum setting.

2.6.6.1.1.1. SIT Sigma 843 Adjustment

Maximum Setting.

With the controls set to high fire, use an adjustable or 10mm spanner to screw the adjustment nut in to increase and out to decrease, until the required pressure is obtained.

Turn the burner On and OFF several times to check the pressure setting and then turn off.

Minimum Setting.

Disconnect electrical connection to the regulator and turn the burner back on and wait until the burner pressure has stabilised.

Keeping the nut stationary, use a 6 x 1 screwdriver to turn the slotted adjustment screw clockwise to increase and counter-clockwise to decrease, until the required pressure is obtained.

Reconnect high/low regulator and check high fire pressure.

Repeat both steps if necessary and then replace cover cap

Cap

2.6.6.1.1.2. Honeywell V4336 Adjustment

Maximum Setting

With the controls set to high fire, use an adjustable or 8mm spanner to turn the adjustment screw, clockwise to increase and counter-clockwise to decrease, until the required pressure is obtained

Turn the burner On and OFF several times to check the pressure setting and then turn off.

Minimum Setting

Disconnect electrical connection to the regulator and turn the burner back on and wait until the burner pressure has stabilised.

Use a screwdriver to turn the slotted adjustment screw clockwise to increase and counter-clockwise to decrease, until the required pressure is obtained.

Reconnect high/low regulator and check high fire pressure.

Repeat both steps if necessary and then replace cover cap.

Hexagonal adjustment screw for maximum pressure setting

Cover Lever point

5. Turn off the main burner, disconnect the pressure gauge and replace the sealing screw.

Internal slotted adjustment screw for minimum pressure setting

Adjustment nut (10mm) for maximum pressure setting

5. Turn off the main burner, disconnect the pressure gauge and replace the sealing screw.

page no. 26 of 40

Adjustment screw for minimum pressure setting

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

2.6.6.1.2. Modulating Regulation

1. Set external controls to ensure that the main burner is off. Open the side access panel. Connect a pressure gauge to the burner pressure test point on the multifunctional control.

2. Set external controls so as to turn on the main burner and maintain high fire. Compare the measured burner gas pressure to that stated on the data plate. In addition it is advisable to check the gas rate using the gas meter dial pointer ensuring that no other appliances supplied through the meter are in operation.

Page 27

2.6 Commissioning and Testing

3. Repeat 2 above with external controls set to maintain low fire.

4. If it is necessary to adjust either the high fire or low fire pressures proceed as follows after removing the plastic cover from the Modulating regulator.

Note: Minimum fire setting must be adjusted first after which the high fire setting can be set. Any adjustment of the minimum fire setting alters the maximum setting.

Minimum Setting.

Disconnect electrical connection of modulating regulator and turn burners back on and wait until the burner pressure has stabilised.

Turn 9mm adjustment nut for low fire pressure clockwise to increase and counter-clockwise to decrease until the required pressure is obtained.

Reconnect modulating regulator and check high fire pressure, readjust if necessary.

2.6.6.1.3. Modulating Control Board

For Modulation a modulating control board is fitted (which also includes the fan command outputs). The board interfaces between a 0-10VDC control signal and the modulating regulator.

Basic operation method

1. With the 0 to 10 signal at 0, the gas valve drive signal will be de-energised.

2. When the input control signal goes to >2V, the gas valve drive output will be at its maximum output value for a preset 2 minutes.

3. An input signal from the burner controller - when received by the board continually for more than 30 seconds - will switch an output to the main heater fan.

4. After the preset 2 minutes of maximum output, the 0 to 10V input signal will take control of the gas valve drive.

Maximum Setting.

Disconnect electrical connection of modulating regulator and turn burners back on and wait until the burner pressure has stabilised.

Push shaft gently downwards to the maximum adjustment screw and hold there. Turn 7mm adjustment nut for high fire pressure, clockwise to increase and counter-clockwise to decrease, until the required pressure is obtained. Release shaft.

Repeat both settings if necessary and then replace cover cap.

Shaft

Cap

Adjustment nut (7mm) for maximum pressure setting

Adjustment nut (9mm) for minimum pressure setting

‘O’ ring

6.3mm AMP terminals

5. When the 0 to 10V signal drops below 1V the signal will drop to zero and the gas valve drive signal will be deenergised.

6. The fan output will continue for a further 2.5 minutes.

2.6.6.2. Final Adjustments

1. In addition it is advisable to check the gas rate using the gas meter dial pointer. Ensure that no other appliances supplied through the meter are in operation.

2. If required, after checking or setting the burner pressures, the CO2 content in the flue gases can be checked by sampling in the first section of flue fitted to the flue outlet of the unit. Nominal CO2 values are given for guidance in the table at the bottom of the previous page.

3. Turn on the main burner as before and test for gas soundness around pressure test joint using a leak detection fluid e.g. soap solution. Replace access panel.

2.6.6.3. Flame Current

1. To measure the flame current connect a multimeter capable of measuring micro amps as shown in the following diagram.

5. Turn off the main burner, disconnect the pressure gauge and replace the sealing screw.

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 27 of 40

Page 28

2.6 Commissioning and Testing

Model 35 50 70 90 120 140

High Fire CO2 % 8.02 8.6 9.15 7.5 0 8.40 8.72

FGT (nominal) °C 150.5 152.0 158.6 132.0 153.0 128.0

Low Fire CO2 % 4.76 4.9 5.00 4.50 5.00 4.99

FGT (nominal) °C 124.0 120.5 121.7 123.0 121.0 98.4

2.6.6.5. Limit Thermostat

Limit Thermostat settings:-

VPx (all) = 90°C

Note: VPx35 & 90 - 140 units have a single limit thermostat whereas VPx 90 to VPx 140 units have two. The second stat is at the

Flame Current Measurement

controls end. The limit thermostats are wired in series (either thermostat will shut down the burner).

opposing side of the heater to the burner/

2. Minimum current reading is 0.5µA and normal value should be 1.5µA or higher.

2.6.6.4. Fan Adjustments

The running current of the centrifugal fan must be checked once the heater is running and compared with the following table.

Typical

Running

Current

Model

Pha

Motor

VPx35 1 1.1 5.7A 6.8A

VPx50 1 1.1 8.5A 9.8A

VPx70 1 1.4 11.0A 12.0A

VPx90 1 2 x 0.55 6.4A 8.0A*

VPx120 1 2 x 1.4 8.5A 10.0A*

VPx140 1 2 x 1.4 10.0A 10.0A*

Max

Running

Current

2.6.7. Air Heater Controls

1. Close the gas service tap and ensure that the gas valve is heard to close within 1 second and that the lockout light is illuminated. Note that the heater may attempt five re-ignitions before going to lockout. Open the gas service tap and reset the unit from lockout.

2. Check that the room thermostat and all automatic controls are operating satisfactorily.

2.6.8. Handing over the Air Heater

Hand these instructions to the user or purchaser for retention and instruct in the efficient and safe operation of the air heater and associated controls. Adjust the automatic controls to those values required by the User.

Finally, advise the user or purchaser that, for continued efficient and safe operation of the air heater, it is important that servicing is carried out annually.

* current shown for each fan

WARNING: Exceeding the MAX running current will cause the fan’s thermal overload to trip!

Adjust the balancing dampers within the airflow ductwork system to achieve a current suitable for the model in question.

page no. 28 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

In the event that the premises are not yet occupied turn off the gas and electricity supplies and leave instructional literature adjacent to gas meter.

Page 29

2.7 Servicing

Gas Safety (Installation & Use) (Amendment) Regulations

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

WARNING: Always switch off and disconnect electricity supply and close the gas service valve before carrying out any servicing work or replacement of failed components.

NOTE: If a suspended air heater is to be serviced do not lean ladders against the heater.

Ensure that an access tower or equivalent is used.

NOTE: The access door to the controls section may be removed to improve access.

Open the door to 90°, remove the earth cable at the bottom, and then lift the door vertically upwards to disengage the hinge plates.

Refit in reverse order. Ensure that the earth cable is refitted.

2. Disconnect the spark and rectification leads from the control box and remove the electrical plug connections from the top of the gas control valve assembly.

3. Remove the burner heat shield, 3 screws.

4. Release the inlet connection flange from the gas valve by removing the four screws.

5. If required remove the manifold by removing the four screws securing it to the burner assembly.

6. Remove the two screws that secure the top of the burner assembly to the bulkhead and lift out burner assembly.

7. Using a stiff brush, not a wire brush, brush the burners to dislodge accumulated deposits. Inspect the burners both internally and externally to ensure that they are clean. Examine the injectors and if damaged or deteriorated, replace with new ones of the correct size and marking. If deemed necessary, clean the injectors. Do not broach out with wire.

8. Reassemble the injectors, manifold and burners in reverse order to that above.

2.7.1. General

Full maintenance should be undertaken not less than once per year by a qualified person.

No 'specialised 'tools will be required to carry out this service.

A fault finding guide is given in section 3.1 to aid servicing.

After any servicing work has been complete, or any component replaced, the air heater(s) must be fully commissioned and tested for soundness as described in Section 2.6.

To commence servicing, firstly open the side access door by rotating the quarter turn screw(s).

2.7.2. Main Burner Assembly Removal

1. Ensure that the gas service valve is turned OFF and then unscrew the union nut situated immediately downstream of it.

2.7.3. Ignition and Rectification Electrodes

Note: The ignition electrode is located at the bottom of the burner assembly, the rectification electrode is located at the top of the burner assembly.

Inspect the electrodes, making sure that they are in a sound and clean condition. In particular check that the ignition electrode is clean and undamaged. Check that the spark gap is 2.5mm and that the rectification probe is 10 12mm forward of the burner.

2.5mm

Ignition Electrode Spark Gap

2.7.4. Exhaust Fan

1. Remove the four screws securing the flue outlet socket.

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 29 of 40

Page 30

2.7 Servicing

2. Disconnect the fan electrical connections from the main terminal strip

3. Remove the screws securing the fan mounting box to the exhaust header plate.

4. Clean impeller by brushing with a stiff brush.

5. Re-assemble using a new sealing gasket to the fan mounting box. Use silicon sealant around the joints

2.7.5 Heat Exchanger

Whilst the main burner assembly is removed from the unit, check that the primary sections that the burners fire into are clean.

2.7.5 Main Fan Assembly

1. Remove section side panel(s) and inspect the fan blades for any damage or excessive buildup of deposits that could give rise to an imbalance. Remove the assembly for cleaning as follows.

downstream of the gas service valve.

2. Remove the electrical plug connections from the top of the multifunctional control.

3. Release the flanged connections at the inlet and outlet of the multifunctional control and remove the multifunctional control.

4. Reconnect the new valve in the reverse order to that above ensuring that the valve is correctly orientated. Renew the sealing 'O' rings if necessary.

2.7.6.2. Burners

1. Remove the burner assembly as described in Section

2.7.2.

2. Remove the end plates of the burner assembly and the central burner support plate.

3. Exchange burners as required and reassemble components in reverse order.

2. Slacken the cable gland on the casing through which the fan electrical cable passes.

3. Disconnect the fan leads from the electrical terminals in the contactor enclosure.

4. Withdraw cable through entry grommet.

5. Remove the complete fan assembly by removing the fixings securing the fan to the base rails.

6. Reassemble in reverse order.

2.7.6. Replacement of Faulty Components

Only parts supplied via or authorised by Powrmatic should be used. A short list of parts and part numbers are detailed in section 3.2 of this manual. If in doubt, please contact Powrmatic.

2.7.6.1 Multifunctional Control

1. Ensure that the gas service valve is turned OFF. If a flexible gas connection has been used go to step 2 otherwise unscrew the union nut situated immediately

4. Re-commission the appliance as described in Section

2.6.

2.7.6.3. Electrode Assemblies

1. Disconnect the electrode leads from the control box as appropriate.

2. Remove the screw securing the electrode assembly to the burner assembly side plate and withdraw the assembly.

3. Fit replacement and reassemble in reverse order. Check that the spark gap is 2.5mm (See section 2.7.3) and the rectification electrode is 10 - 12mm forward of the burner.

2.7.6.4. Limit Thermostat

NB. Ensure that the thermostats are set correctly before fitment

Limit Thermostat settings:-

1. Remove the screws securing the thermostat phial mounting plate to the inner bulkhead*, withdraw assembly and unclip the phial.

VPx (all) = 90°C

page no. 30 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 31

2. Remove the electrical connections from the limit thermostat.

Model

2.7 Servicing

Pressure Switch Setting (Pa)

3. Remove the securing nut and remove thermostat from the front panel.

4. Fit replacement thermostat in reverse order.

Note*: VPx35 & 90 - 140 units have a second limit stat at the opposing end of the heater to the burner/controls. Remove the two small cover plates and replace as above.

2.7.6.5. Exhaust Fan

1. Remove the four screws securing the flue outlet socket.

2. Disconnect the fan electrical connections from the main terminal strip

3. Remove the screws securing the fan mounting box to the exhaust header plate.

4. Remove fan assembly.

LNVx35

LNVx50 180

146522176

180

LNVx70 200

LNVx90

LNVx120 350

146522177

300

LNVx140 330

2.7.6.7. Control Box

1. Unplug all the electrical connections.

2. Remove the two screws that secure the control box in place.

3. Fit replacement in reverse order.

5. If needed, transfer the fan mounting box to the replacement fan.

6. Fit replacement exhaust fan, using new gaskets and silicon sealant as necessary, and reassemble in reverse order.

2.7.6.6. Air Pressure Switch

1. Remove the two screws securing the cover and remove cover.

2. Disconnect electrical connections.

3. Pull off the sensing tube from the air pressure switch.

4. Remove the screws fixing the air pressure switch and remove switch.

5. Fit replacement in reverse order refitting the sensing tube to the negative (- or L) tapping on the pressure switch.

6. Adjust pressure switch set point to that shown in the following table:

2.7.6.8. Fan Command Module

1. Unplug all the electrical connections by squeezing each side to release.

2. Using a small flat screwdriver push on the locking tab of each PCB mount and gently ease the board upwards to release.

3. Fit replacement in reverse order.

2.7.6.9. Centrifugal Fan/Motor

1. Disconnect the electrical connections to the centrifugal fan section.

2. Remove the side panels of the section for access to the fan and motor.

3. Fit replacements as appropriate and reassemble in reverse order.

Note: If a 3ph motor is being replaced ensure that the direction of rotation is correct. If it is not interchange any two of the three phases connected to the motor.

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 31 of 40

Page 32

3.1 Fault Finding

START

Is there

230V between

Pactrol controller terminals

CON5 - pin 1 and

pin 2?

YES

Is there

continuity between

Pactrol controller terminals

CON5 - pin 1 and

pin 7?

YES

Is there

230V between

Pactrol controller terminals

CON5 - pin 3 and

Neutral?

TURN ON MAINS

ISOLATOR!

YES

Is there

now 230V between

Pactrol controller terminals

CON5 - pin 1 and

pin 2?

Check the

internal fuse

inside the

Pactrol

in overheat trip?

RED lamp will be

Is the unit

indicating

Check for break

in BROWN cable.

NOW continuity

between Pactrol controller

terminals CON5 - pin

1 and pin

YES

there

230V at

contractors

terminal

Replace Pactrol!

No call for heat!

Check controller!

YES

there

230V at

contractors terminal 6?

AMBER lamp will be

indicating

Is the exhaust fan

running?

YES

there 230V on the

YELLOW cable to the 'C'

terminal of the Pressure

switch?

YES

Continued on

YES

Burner in Lockout.

Press the illuminated

amber rocker switch

YES

Is there

230V on the WHITE

cable to the 'N.O' terminal

of the Pressure

switch?

the inpulse tube connected to the negative connection ofthe pressure

switch?

Swap terminals

Still not

working?

Heater in Overheat.

Remove the black cap

and press the button

Replace Pactrol!

YES

Pressure Swirch stuck

in a closed position

Chan ge A.P. S.!

YES

there 230V on the YELLOW cable to the 'C' terminal of the Pressure

switch?

Replace Pactrol!

Check for break

in WHITE &

GREY cables.

Replace

Combustion

Fan!

page no. 32 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 33

Continued from

3.1 Fault Finding

Is there

230V between

contractors terminals 14 and

15? Green lamp will be

indicating?

Check for break in

VIOLET & WHITE

YES YES

Has the Gas Solenoid

Valve energised?

YES

Is the Gas

Solenoid Valve

energised to HIGH FIRE?

(for only 30 seconds if input

is at low fire)?

BROWN cable from

terminal 'C' of the

YES

cables.

Replace

Gas Valve and

Lead!

YES

Is there

230V on the

Fan Comand

Module?

there

NOW 230V

between contractors

terminals 14

and 15?

WHITE & PURPLE cables to

terminal 'GV PACTROL' of

the Fan Command

YES

Is there

230V on the

Module?

Replace Pactrol!

Replace Main

Fan Command

Manual!

there

NOW a spark present at the ignition

Electrode?

Is a

spark present and

the Ignition Electrode and

flame present during the 5

second period?

YES

Is the

flame sensor

sending a rectification

signal back to the

controller?

YES

Continued on

• Ensure spark gap is 2.5mm

• Ensure there are no cracks on

• Clean electrode with wire wool

• Ensure heater has a good earth

• Ensure there are no cracks on

• Clean electrode with wire wool

the ceramic

• Check cable to Pactrol

the ceramic

• Ensure mains polarity is correct

• Check cable to Pactrol

YES

there

NOW a

spark present

at the ignition

Electrode?

Has the

flame rectified

NOW?

Replace Pactrol!

• Minimum reading is 1.0μA a

Replace

Electrode!

• Check flame current by connecting a sensitive

multi-meter capable of

measuring micro amps

normal value should

be 1.5μA or higher.

Has the

flame rectified

NOW?

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 33 of 40

Page 34

3.1 Fault Finding

Burner Fired!

Continued from

Has the main fan

star ted after the 30 second

delay?

YES

Heater Working!

Does

the burner

go into high limit

trip after a period

of time?

YES

• Check burner pressure for correct setting.

• Check Overheat Stat for incorrect limit setting.

• Check fan rotation.

• Remove the black cap and press the reset button

Is there

230V at terminal

'SW' on the Fan Command

Module?

Replace Main

Fan Assembly!

• Check for 230V on terminals L & N on Fan Command Module.

• Check for 230V between terminals GV on Fan Command Module.

YES

Has

the main fan

star ted

NOW?

• Check the operation of the main fan by

connecting it to

a permanent mains

supply.

Has

the main fan

star ted

NOW?

YES

Burner

STILL in high

limit trip?

YES

Replace

Limit Stat!

3.1.1 Modulation Driver LED Indication

The unit will have a single LED indicator and will provide the following information :-

Steady on LED

Unit in standby mode (all outputs off)

1 LED Blink

Summer fan “ON” mode active.

2 LED Blinks

DC control signal received >2V, Heating mode gas valve drive at maximum.

Replace Main

Fan Command

Manual!

4 LED Blinks

DC control signal <2V. Heating mode now off but fan in overrun mode (2.5 mins max)

Slow on off @ 50%

Auto Time Out has occurred. (i.e. DC control signal received >2V but no trigger from sequence controller within 5 mins.

3 LED Blinks

Fan output on, (heating mode) Heating mode gas valve drive follows DC input.

page no. 34 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 35

3.2 List of Parts

Item Description Usage Part No.

Gas Valve SIGMA 843 35-50 145035208HL-SIT/KIT

Gas Valve VK4105A 35-50 145035208/KIT

Gas Valve VR4605AB 70-90 145035204/KIT

Gas Valve V425AB 120/140 141378715 /K IT

Ignition Electrode

35-7 0 90 -14 0

Rectification (Flame Sensor) Probe All 142423003

35-7 0

Burner

90 -14 0

Limit Stat All 142403609

142423010 142423004

142400240 142400241

Control Box (Sequence Controller)

All High/Low All Modulation

High/Low Governor Head 35-14 0 -/HL 142466402

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

145030846 145030847

page no. 35 of 40

Page 36

3.2 List of Parts

Modulation Governor Head 35-140 -/MOD 142466403

Fan & Modulation Burner Controller 35-140 -/MOD 142400303M

Lockout Reset Switch All 143070276

Fan Command Module MkIII All (except /MOD) 142403603

Pressure Switch HUBA 604

Exhaust Fan Exhaust Fan c/w Mounting Brackets

Main Centrifugal Blower - VPx

35-7 0 90 -14 0

35-50 35-50

70 70

90 -14 0 90 -14 0

50/90

120/14 0

146522176 142522177

140210496 NV X1050EXH/SP

140201505 NVX6075EXH/SP

140201506 NVX90140EXH/SP

tba

1402CFAN210/T/15

1402CFAN550/T/15

1402CFAN580/T/15

Contactor

page no. 36 of 40

120 -14 0 70-90

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

143000600 143000601

Page 37

Information required for ecodesign (ErP) Directive 2009/125

Model 35 50 70

Rated Heat Capacity

Low Heat Input

Minimum Heat Capacity

Useful Efficiency

Electrical Power Consumption*

NOx Seasonal (Gross)

Envelope Loss Factor

Emission Efficiency

Seasonal Space Heating Energy Efficiency

Model cont. 90 120 140

Rated Heat Capacity

Low Heat Input

Minimum Heat Capacity

Useful Efficiency

Electrical Power Consumption*

NOx Seasonal (Gross)

Envelope Loss Factor

Emission Efficiency

Seasonal Space Heating Energy Efficiency

Nett CV kW 26.1 37.4 52.9

High Fire % 93% 93% 92%

Low Fire % 91% 91% 90%

High Fire kW 0.07 0.06 0.06

Low Fire kW 0.07 0.06 0.06

Standby kW <0.01 <0.01 <0.01

Ignition kW

Nett CV kW 71.7 90.8 101.2

High Fire % 92% 93% 94%

Low Fire % 81% 92% 92%

High Fire kW 0.06 0.06 0.06

Low Fire kW 0.06 0.06 0.06

Standby kW <0.01 <0.01 <0.01

Ignition kW

Appendices

kW 36.5 54.4 76.5

kW 23.8 33.9 47.8

0.00 0.00 0.00

mg/kWh

% N/A N/A N/A

% hs, flow

% hs,h

kW 97.5 126.8 146.1

kW 65.3 83.5 93.3

mg/kWh

% N/A N/A N/A

% hs, flow

% hs,h

<96.0 <96.0 <96.0

94% 94% 93%

74% 72.8% 72.1%

0.00 0.00 0.00

<96.0 <96.0 <96.0

93% 93% 93%

72.1% 73.7% 73.7%

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 37 of 40

Page 38

Notes:

page no. 38 of 40

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

Page 39

Notes:

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

page no. 39 of 40

Page 40

www.powrmatic.co.uk

Getting In Touch

Powrmatic Limited Hort Bridge, Ilminster Somerset

Stamm International HQ

TA19 9PS tel: +44 (0) 1460 53535

Stamm International Corporation

fax: +44 (0) 1460 52341

PO Box 1929

e-mail: info@powrmatic.co.uk

Fort Lee, NJ 07024

web: www.powrmatic.co.uk

Tel: 201-947-1700 Fax: 201-947-9662 E-mail: stamminc@pobox.com

More information is available from our website by scanning the following QR code.

Powrmatic Ireland

45 Broomhill Close

Tallaght

Dublin 24

tel: +353 (0) 1452 1533

fax: +353 (0) 1452 1764

e-mail: info@powrmatic.ie

web: www.powrmatic.ie

Powrmatic pursues a policy of continues improvement in both design and performance of its products and therefore reserves the right to change, amend or

vary specifications without notice. Whilst the details contained herein are believed to be correct they do not form the basis of any contract and interested

parties should contact the Company to confirm whether any material alterations have been made since publication of this brochure.

page no. 40 of 40

ICOM

Energy Association

VPx Range Users, Installation & Servicing Instructions Doc Ref M205 issue 1.2 Nov 2018.

EURO-AIR

QUALITY

Powrmatic VPx Series, VPx35, VPx50, VPx120, VPx140 User, Installation & Servicing Manual

Specifications and Main Features

Frequently Asked Questions

User Manual