Powrmatic NVx10 User, Installation And Servicing Instructions
  1. Manuals
  2. Brands
  3. Powrmatic Manuals
  4. Gas Heater
  5. NVx10
  6. User, installation and servicing instructions

Powrmatic NVx10 User, Installation And Servicing Instructions

Hide thumbs Also See for NVx10:
Table of Contents

Advertisement

Quick Links

Issue 5.5 August 2015
Users, Installation
and Servicing
Instructions
(Brahma Control, MKIII LIB & GM44)
WARNING: THIS APPLIANCE MUST BE EARTHED
IMPORTANT: Reset from Lockout is by a switched Neutral
GB & IE
H E A T I N G
/ /
V E N T I L A T I O N
/ /
A I R C O N D I T I O N I N G

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the NVx10 and is the answer not in the manual?

Questions and answers

Related Manuals for Powrmatic NVx10

Summary of Contents for Powrmatic NVx10

  • Page 1 Issue 5.5 August 2015 Users, Installation and Servicing Instructions (Brahma Control, MKIII LIB & GM44) WARNING: THIS APPLIANCE MUST BE EARTHED IMPORTANT: Reset from Lockout is by a switched Neutral GB & IE H E A T I N G V E N T I L A T I O N A I R C O N D I T I O N I N G...

  • Page 2: Nvx Range Users, Instructions & Service Instructions Issue 5.5 August

    Except for the obligation of Powrmatic Ltd to perform warranty repairs during the guarantee period Powrmatic will not be liable in repect 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.

  • Page 3: Table Of Contents

    We appreciate you buying one of our high quality products and know that you have made the best choice. By choosing Powrmatic, you are investing in UK manufacturing & its workforce. We pride ourselves by manufacturing products that provide clean, comfortable and safe working environ- ments worldwide together with the personal &...
  • Page 4 Amber indicator level reset for about 1-2 seconds. switch light on the front panel is illuminated. NVx10 - 75 units have the thermostat located inside the controls WARNING: If it is not possible to light the heater section.

  • Page 5: Introduction

    * An approved class of person listed on the gas All Powrmatic heaters use gas and electricity to power safe register. them, they may also contain moving parts such as pulleys and belts. It would be hazardous to tamper with or attempt 1.1 Introduction...

  • Page 6: General Requirements

    Those appliances having a gross input rating not exceed- • Where high levels of extract persist ing 60kW viz. NVx10 to NVx50 inclusive and installed to take their combustion air from within the building must be Installation in such areas may be possible under specific installed in accordance with the relevant recommenda- conditions.

  • Page 7: Gas Supply

    Code. 1.2.5 Flue System Combustion air socket Only flue systems supplied through Powrmatic Ltd may be used with NVx units. Several configurations of flue and NVX Range Users, Instructions & Service Instructions Issue 5.5 August 2015 Page 7...
  • Page 8 1.2.6 Combustion & Ventilation Air 2) Installation in plant rooms or enclosures There must be permanent air vents communicating direct- Supply ly with the outside air, at high level and at low level. There shall be provision for a supply of air for combustion Plant Rooms and, in the case of heaters installed in an enclosure or Low level (inlet) 4cm²/kw of total rated net heat input...
  • Page 9 A full and unobstructed return air path to the air heater(s) 900mm of the outlets. must be provided. Ducting Requirements Model Air Volume m Maximum Duct Resistance NVx10 NVx15 1405 NVx20 1873 NVx25 2341 NVx30...

  • Page 10: Size Data

    1.3 Size Data NVx F - Axial Fan Crossflow Units Page 10 NVX Range Users, Instructions & Service Instructions Issue 5.5 August 2015...
  • Page 11 NVx 90S - Single Fan Unit NVx F / NVx90S - Axial Fan Crossflow Units Model 1325 1575 2325 2325 2325 1000 1000 1000 1000 1000 1000 1325 DØ 235.5 235.5 233.5 233.5 233.5 235.5 235.5 235.5 235.5 232.5 232.5 232.5 232.5 232.5...
  • Page 12 NVx V - Axial Fan Downflow Units Model 1000 1000 1325 1325 2325 2325 2325 1000 1000 1000 1000 DØ 233.5 233.5 235.5 235.5 235.5 235.5 235.5 233.5 442.5 442.5 442.5 Page 12 NVX Range Users, Instructions & Service Instructions Issue 5.5 August 2015...
  • Page 13 NVx CCF - Centrifugal Close Coupled Fan Units Model 2325 1000 1000 1000 1000 1000 1325 1000 1325 2325 2325 DØ 235.5 233.5 233.5 235.5 233.5 235.5 235.5 235.5 232.5 232.5 232.5 232.5 232.5 232.5 1505 1317 1317 1356 1356 1430 1430 1505...
  • Page 14 NVx D - Ducted Heat Module (No Fan) Model 1000 1000 1000 1000 1325 1000 1000 1325 2325 2325 2325 DØ 233.5 235.5 233.5 233.5 235.5 235.5 235.5 235.5 232.5 232.5 232.5 232.5 232.5 1932 1932 1932 Page 14 NVX Range Users, Instructions & Service Instructions Issue 5.5 August 2015...
  • Page 15 NVx Duo - Axial Fan Bi-Directional Units Model 2325 2325 2325 DØ 235.5 235.5 235.5 1120 1182 1182 NVX Range Users, Instructions & Service Instructions Issue 5.5 August 2015 Page 15...

  • Page 16: Fitting The Unit

    2.1 Fitting the unit Distance from last part of heater to the closest obstacle Distance RHS Clearance (looking at front of the heater) 1000mm LHS Clearance (looking at front of the heater) 200mm Top of heater 200mm Rear of heater 400mm (Dependant on flue system used) For Multi air heater Installations the following minimum...
  • Page 17 2.1.1 Fitting space requirement 2.1.2 Suspending the heater For NVx/D units the normal air flow direction is from right Threaded drop rods must have lock nuts fitted that are to left when viewing the heater from the burner/controls tightened down onto the 10mm fixings in the heater. If end with the fan unit upstream.

  • Page 18: Flue/Combustion Air Duct System

    (end of flue terminal to back or top of 1. Remove the two blanking plates from the flue /combus- heater) shall not be less than 1.0m for the NVx10 – 50 and tion air openings at the top of the unit.
  • Page 19 1. Locate the position of the flue terminal, allowing for a Notes for all systems. slight gradient running down from the heater to the termi- i) Final overall length of adjustable disconnection nal of 2° - 3° and cut a hole to suit. piece must be between 360 - 415mm.

  • Page 20: General Identification Of Electrical Items

    Fig 2b Individual system - vertical Type C32 installation Fig 2a Individual system - horizontal Terminal Type C12 installation Single to twin Terminal adaptor Flue socket Lengths Flashing Single to twin adaptor Maximum 6m Minimum Combustion 80Ø - 1480mm air duct 100Ø...

  • Page 21: Electrical Cable Instrallation

    Max. 100m) ‘F’ Free Blowing ‘C’ Centrifugal FUSE FUSE MODEL RATING (A) RATING (A) NVx10, NVx15 NVx20, NVx25, NVx30 NVx35, NVx40, NVx50 NVx60, NVx75 NVx90, NVx90S NVx120, NVx140 NVX Range Users, Instructions & Service Instructions Issue 5.5 August 2015 Page 21...

  • Page 22: Electrical Thermostat Connections

    2.5 Electrical Thermostat Connections Note: To achieve maximum system efficiency it is recommended that NVx units are controlled by an MC200 Fuel Saver 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.
  • Page 23 2.6.6.1. Standard Units Governor adjustment screw under cover cap (Honeywell VR4605AB1027) This is set for the required heat input before despatch. In the case of Hi/Lo and Modulating units both high and low pressures are set. Pressures should be checked in the following manner.
  • Page 24 Note: High fire setting must be adjusted first after through the meter are in operation. which the low fire setting can be set. Any adjust- ment of the high fire setting alters the minimum 3. Repeat 2 above with external controls set to maintain setting.
  • Page 25 2.6.6.2. Modulating Interface Board E.g. -When P1 is set at 100% (fully clockwise) maximum power (165mA @ 22VDC) is provided to the modulation coil with a 10VDC input control signal. -When P1 is set at 50% (fully anticlockwise) maximum power (165mA @ 22VDC) is provided to the modulation coil with a 5VDC input control signal.

  • Page 26: Servicing

    2.6.6.3. Air Heater Controls Note: NVx 10 to NVx 75 units have one fan/limit thermostat whereas NVx 90 to NVx 140 units have two. The second thermostat is at the oppo- 1. Close the gas service tap and ensure that the gas valve site end of the heater to the burner/controls end.
  • Page 27 2.7.5 Main Fan Assembly 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. 2.7.5.1. NVx/F & /CCF Models 3. Remove the burner heat shield, 3 screws. 1.
  • Page 28 2. Remove the electrical plug connections from the top of the multifunctional control. 4. Fit replacement thermostat in reverse order. 3. Release the flanged connections at the inlet and outlet Important: In this application the brass link is removed. of the multifunctional control and remove the multifunc- tional control.

  • Page 29: Technical Data

    4. Note the setting of the old pressure switch. 2.7.6.8. Centrifugal Fan/Motor 5. Remove the screws fixing the air pressure switch and remove switch. 1. Disconnect the electrical connections to the centrifugal fan section. 6. Fit replacement in reverse order refitting the sensing tube to the negative (- or L) tapping on the pressure 2.
  • Page 30 MAXIMUM NOISE DUCT WEIGHT VOLUME MOTOR LEVEL INPUT INPUT OUTPUT OUTPUT RESISTANCE (Nett) (Nett) MODEL m³/s m³/h dB(A) @ 3m 0.040 NVx10 10.79 10.0 6.57 5.90 0.2601 0.250 91.5 71.5 0.120 NVx15 16.00 15.0 8.22 7.50 0.3902 1405 0.250 106.5 0.130...
  • Page 31 Low Fire Inlet INJECTORS Pressure Burner Burner Gas Rate Gas Rate 20mb Pressure Pressure MODEL Size Marked mbar m³/h mbar m³/h NVx10 1.36 13.8 1.14 0.69 NVx15 1.67 12.5 1.69 0.87 NVx20 1.94 12.7 2.31 1.26 Minimum NVx25 1.94 12.5 2.89...

  • Page 32: Fault Finding Flow Chart

    4.1 Fault Finding Start ↓ ← Gas & Electrical supplies present → → Turn supplies On, Check fuses/connections Main fan running continuous → → If unit is cool ensure the white button on the Honeywell fan limit stat is pulled out. ↓...
  • Page 33 ↓ Burners light? Check ignition electrode position. Is gas pipe work purged of air? Check gas pressures. Replace gas valve → → Exhaust fan continues to run APS has lost C. to N.O. continuity, slightly reduce APS set point. → →...

  • Page 34: Short List Of Parts

    4.2 Short List of Parts ITEM USAGE PART # 10-50 145035208 60-90, 90S 145035204 120/140 141378715 Ignition Electrode 10-75 142423002 Ignition Electrode 90S, 90-140 142423004 Rectification Electrode 142423003 Burner 10-75 142400240 Burner 90S, 90-140 142400241 Fan & Limit Thermostat 143000306 Control Box 145030844 Hi/Lo Governor Head...
  • Page 35 Only original specified parts may be fitted as service replacements and all items are available from the Powrmatic Ltd Spares Department. Please refer to Powrmatic Ltd for any parts not shown in the listing. Powrmatic Ltd must also be consulted before parts other than those specified or recommended in the servicing instructions are replaced.
  • Page 36 More information is available from our web site on:- http://www.powrmatic.co.uk/products/heating/browse/view/product/nvx-gas-unit-heaters/ HEATING DIVISION Hort Bridge Ilminster, Somerset TA19 9PS Tel: 01460 53535 Fax: 01460 52341 Every effort is made to ensure accuracy at time of going to press. However as part of our policy of continued product improvement, we reserve the right to alter specification without prior notice.

This manual is also suitable for:

Nvx15Nvx seriesNvx20Nvx35Nvx30Nvx40 ... Show all

Table of Contents