1. Manuals
  2. Brands
  3. Nortek Manuals
  4. Air Conditioner
  5. AB 225
  6. Installation and operating manual

Nortek AB 225 Installation And Operating Manual

Gas fired combined flue air curtain
Hide thumbs Also See for AB 225:
Table of Contents

Advertisement

Quick Links

Download this manual See also: Installation and Operating Manual
A
IRBLOC
G
AS
I
NSTALLATION AND
INDEX
General Information -------------------------------------------------------- 1
Dimensions -------------------------------------------------------------------- 2
Installation Details ---------------------------------------------------------- 4
Wiring Details ---------------------------------------------------------------- 5
Servicing ---------------------------------------------------------------------- 6
Commissioning -------------------------------------------------------------- 7
Parts Replacement ---------------------------------------------------------- 8
Spare Parts -------------------------------------------------------------------- 9
Fault Finding --------------------------------------------------------------- 10
User Instructions ----------------------------------------------------------- 11
Nortek Global HVAC (UK) Ltd equipment must be installed and maintained in accordance with
the relevant provisions of the Gas Safety (Installations and Use) Regulations 1998 for gas fired
products. Due account should also be taken of any obligations arising from the Health and Safe-
ty at Works Act 1974 or relevant codes of practice. In addition the installation must be carried
out in accordance with the current IEE wiring regulations (BS 7671), BS 6896 (Industrial & Com-
mercial) and any other relevant British Standards and Codes of Practice by a qualified installer.
All external wiring MUST comply with the current IEE wiring regulations.
Nortek Global HVAC (UK) Limited, Fens Pool Avenue, Brierley Hill, West Midlands, DY5 1QA
AB R
F
C
IRED
OMBINED
O
ANGE
F
A
C
LUE
IR
URTAIN
M
PERATING
Part No. 702115
Doc No. 702115 Page of 24
ANUAL
Section

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the AB 225 and is the answer not in the manual?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Nortek AB 225

Summary of Contents for Nortek AB 225

  • Page 1: Table Of Contents

    User Instructions ----------------------------------------------------------- 11 WARNINGS Nortek Global HVAC (UK) Ltd equipment must be installed and maintained in accordance with the relevant provisions of the Gas Safety (Installations and Use) Regulations 1998 for gas fired products. Due account should also be taken of any obligations arising from the Health and Safe- ty at Works Act 1974 or relevant codes of practice.

  • Page 2: General Information

    1. General Information. Welcome to the new AB Airbloc gas fired air All dimensions shown are in mm unless curtain models. Local regulations may vary in otherwise stated. the country of use and it is the installers responsibility to ensure that such regulations are The manufacturer reserves the right to alter satisfied.

  • Page 3: Dimensions

    2. Dimensions. Diagram 1: Dimensions (AB 400) Module Weight (kg) AB 175 1750 1090 1710 AB 225 2250 1090 2210 AB 400 4000 1090 AB 175 module AB 225 module Doc No. 702115 Page 3 of 24...

  • Page 4: Technical Specifications

    Type Centrifugal (with integral thermal trip) Speeds No. of fans Maximum air volume 9600m /hr (AB 175) 12800m /hr (AB 225) Voltage 230V 1PH 50Hz Power rating (per fan) 1140 W Current (per fan) 5.2A (FLC) Start current (per fan)

  • Page 5: Installation Details

    (arrowed, Fig. B). The louvres can now be moved to the desired position and the locking pins re-tightened. NOTE: The AB 225 model has two pairs of intermediate locking Allen pins, whereas the AB 175 model only has one pair.
  • Page 6 Typical support channels Cantilever brackets (not supplied) Factory fitted mounting brackets Diagram 4: Mounting FRONT VIEW Flue technical details. Model AB 225 AB 175 Gas type Natural gas (G20) Propane (G31) Natural gas (G20) Propane (G31) Mass flow rate of 0.0340 0.0332...
  • Page 7 4. Installation Details cont. Diagram 5: Typical vertical flue arrangement Terminal 600mm minimum Ventilation requirements are detailed in section 4.3. Maximum flue length = 10m + 4 bends Flue damper Flue damper Alternative flue exit FRONT VIEW Diagram 6: Typical horizontal flue arrange- GC1 terminal SIDE VIEW Note:...

  • Page 8: Wiring Details

    5. Wiring Details. Diagram 7: Burner control wiring In addition to the above burner wiring diagram, a customer specific control panel wiring diagram will be supplied with each air heater. WARNING: THIS HEATER SHOULD NOT BE INSTALLED WHERE THERE IS A CORROSIVE ATMOSPHERE.
  • Page 9 5. Wiring Details cont. A customer specific control panel wiring The panel also contains a removable link on the diagram will be supplied with each air curtain main terminal rail to allow the air curtain to be switched on and off remotely via a BMS control 5.1 Burner controls relay.

  • Page 10: Servicing

    6. Servicing. These appliances should be serviced annually by a competent person to ensure safe and efficient operation. In exceptionally dusty or polluted conditions more frequent servicing may be required. The manufacturer offers a maintenance service. Details available on request. Isolate gas and electricity supplies before commencing any work.
  • Page 11 6. Servicing cont. Fig.0 Fig.3 Clean out the emitter tubes using a suitable flue brush/scraper fitted with flexible extension rods. Fig.1 Fig.4 Remove the six flue box lid retaining nuts from their captive studs as shown in Fig.2. then remove lid taking care not to damage the gasket.

  • Page 12: Commissioning

    7. Commissioning. This appliance must be commissioned by 7.5 Burner gas pressure adjustment The gas pressure is set for the required heat a suitably qualified engineer input before the appliance leaves the factory, normally, provided the gas supply to the air 7.1 Gas connection Only persons suitably qualified to work on gas heater is in accordance with the supply pressure...
  • Page 13 7. Commissioning cont. Fig.6 Fig.6C Grub screw OPEN Gas flow  Re-check manometer reading. 7.6 Flue damper setting.  Re-tighten flue damper handle grub screw. Each burner pressure switch tube is fitted with a test point tee for connecting to a manometer. 7.7 Air solenoid timer setting.

  • Page 14: Parts Replacement

    8. Parts Replacement. All servicing/maintenance work on this air Fig.8 heater should be carried out by suitably qualified and Gas Safe registered engineer. Before commencing any work please ensure that the gas and electricity supplies are turned off. Always test for gas soundness with a suitable leak detection fluid.
  • Page 15 8. Parts Replacement cont. Using a suitable pair of spanners release the The manifold can now be removed downwards union on the outlet side of the gas valve as complete with injectors. Fig.14 shows the shown in Fig. 11. manifold with injectors in isolation for clarity. Fig.14 Fig.11 Remove the two mounting bracket screws as...
  • Page 16 8. Parts Replacement cont. Lift the air pressure switch upwards from the 8.1.6 Flame probe. rear of the mounting plate then remove the three Remove the flame probe cable spade connector female spade connectors as shown in Fig.17 as shown in Fig.20. then remove switch.
  • Page 17 8. Parts Replacement cont. 8.1.8 Overheat thermostats 8.1.7 Spark electrode Remove the two retaining screws securing the Remove the HT cable spade connector from the thermostat access lid as shown in Fig.26. ignition sequence controller as shown in Fig.23. Fig.26 Fig.23 Disconnect the spade terminals from the self Remove fixing screw as shown in Fig.24.
  • Page 18 8. Parts Replacement cont. 8.2 Air distribution fans. Remove the spade terminals from the manual The air distribution fans can be accessed by removing the retaining screws securing the hinged lid on the underside of the air heater. Fig.29 (See Fig.32) Fig.32 reset thermostat as shown in Fig.
  • Page 19 8. Parts Replacement cont. Fig.38 shows single air distribution fan in Fig.35 isolation for clarity. Fig.38 Fan outlet Fan closure plate 8.2.2 Fan removal Identify the feed cable for the fan requiring removal and disconnect it from its cable mount- ed plug/socket.

  • Page 20: Spare Parts

    Recommended spares Note: Any spare parts or components used In order to aid troubleshooting and servicing we that are not approved by Nortek could invali- recommend that the components shown in this date the approval of the appliance and also the section should be stocked.

  • Page 21: Fault Finding

    If the heater still fails to 1. Burner inlet pressure. operate normally, 2. Burner nozzle pressure. please contact 3. Check live & neutral polarity. the Nortek 4. Check presence of good service department. earth. Doc No. 702115 Page 21 of 24...
  • Page 22 1. Motor thermal trip (may run Single fan when cool), test motor. unit off? 2. Motor wiring. 3. Motor plug/socket. If the fan(s) still fail to operate normally, please contact the Nortek service department. Doc No. 702115 Page 22 of 24...
  • Page 23 Notes Doc No. 702115 Page 23 of 24...

  • Page 24: User Instructions

    Registered in England No. 1390934. Registered office: 10 Norwich Street, London, EC4A 1BD Nortek Global HVAC is a registered trademark of Nortek Global HVAC Limited. Because of continuous product innovation, Nortek Global HVAC reserves the right to change product specification without due notice.

This manual is also suitable for:

Ab 175Ab 400

Table of Contents