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dB AM Series Installation, Operation & Maintenance Instructions Manual

Fan convectors

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Series AM Fan Convectors
Installation, Operation & Maintenance Instructions
Dunham-Bush Ltd, Downley Road, Havant, Hants PO9 2JD
023 9247 7700
UK:www.dunham-bush.co.uk
INSTALLER: Please leave these instructions, heater wiring diagram & access panel keys with the user.
INTRODUCTION
This booklet provides guidance to identify, handle,
install, commission, operate and maintain
Dunham-Bush Series AM fan convectors. The
instructions apply to the standard range of 22
models shown on page 2. Please study the
instructions carefully before commencing any
installation work.
IDENTIFICATION
The fan convector serial number, model description,
figure number (size) are displayed on a label found
on the inside of the heater access panel. If specified,
a stencil reference may also be marked on the
heater on-site identification.
Diagram 1: Series AM Model 13 Figure 04 with left hand coil connections - *items are optional accessories
info@dunham-bush.co.uk
Global:www.dunham-bush.com
DESCRIPTION
Each Series AM fan convector comprises a sheet
steel casing with a lockable access panel, fan/motor
assemblies, air filter and hot water heating coil.
Single phase electric elements can be fitted instead
of a hot water coil. Heaters can be supplied for one
or two speed fan operation ; single speed units are
pre-set to low, medium or high speed, and two
speed units are pre-set to low/medium, low/high or
medium/high speeds, as ordered.
Fan control is by means of switches and/or
thermostats, listed in Accessories.
1
Document Ref:
121-000-001-D
July 2021

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Summary of Contents for dB AM Series

  • Page 1 Series AM Fan Convectors Installation, Operation & Maintenance Instructions Document Ref: Dunham-Bush Ltd, Downley Road, Havant, Hants PO9 2JD 121-000-001-D 023 9247 7700 info@dunham-bush.co.uk UK:www.dunham-bush.co.uk Global:www.dunham-bush.com July 2021 INSTALLER: Please leave these instructions, heater wiring diagram & access panel keys with the user. INTRODUCTION DESCRIPTION This booklet provides guidance to identify, handle,...
  • Page 2 Diagram 2: Range of standard models and accessories...
  • Page 3 RANGE The standard range comprises 22 standard models, Size Nominal output Casing width in 4 categories - floor standing, ducted floor (kW) (mm) standing, wall mounted and ceiling mounted. Refer Fig 03 to Diagram 2 on page 2 for model identification. Fig 04 All models are available in seven sizes (figure Fig 06...
  • Page 4: Installation

    ACCESSORIES Electric heating (single stage up to 6kW) on sizes 100mm, 150mm or 200mm high plinth on floor Fig 03, Fig 04 and Fig 06 on all models. Heaters are mounted models single speed and may be supplied with programmable thermostat/timeclock. Remote pencil proof grille and fixing frame available on models 15, 16, 17, 41, 21, 23 and 92.
  • Page 5 Floor models 13, 15, 16, 17, 19, 25, 37, 41 and 88 Pipework Connections Models 15 & 41 - see Diagram 12 on page 9. Pipe up as detail in Model 17 - see Diagram 13 on page 10. page 6. Electrical Connections Models 19 &...
  • Page 6 Ceiling/wall models 28, 30, 31, 34, 38, 52 and 53 Loosen the M8 screws which attach the Connect pipework to the coil as described in Pipework Connections suspension brackets to the heater casing and below. remove the brackets. Wire up as detailed in Electrical Connections and Controls Position and fix the suspension brackets to...
  • Page 7 Electrical Connections and Controls Loose Grille and Fixing frame Connect a 230v/1ph/50Hz supply to the IEC Check dimensions and position of the grille mains inlet connector. (see Diagram 5 on and frame in relation to the heater. page 4). Prepare an opening to accept the frame. Fix any remote accessories-switches or Fit spire captive nuts into the slots in each thermostats in the appropriate locations and...
  • Page 8 Fan Speed Adjustment (EC Motors) Heaters fitted with EC motors are available Avoid setting fan speeds too low:- as one of two standard options:- a) low fan speeds can cause stratification of ECS - variable fan speed with speed control heated air within the room, reducing by an external 2-10VDC signal (e.g.
  • Page 9 Diagram 12: Typical installation detail for Models 15 and 41...
  • Page 10 Diagram 13: Typical installation detail for model 17...
  • Page 11 Diagram 14: Typical installation detail for models 19, 22, 53 and 88.
  • Page 12 Diagram 15: Typical installation detail for model 21...
  • Page 13 Diagram 16: Typical installation detail for models 23 and 92...
  • Page 14 Diagram 17: Fixing detail for loose grille and fixing frame Diagram 18: Fixing detail for plinth...
  • Page 15 Diagram 19: Fixing detail for suspension brackets (wall and ceiling mounted units)
  • Page 16 CLEANING AND MAINTENANCE WARNING: Prior to undertaking any cleaning or maintenance, ensure that all electrical supplies are disconnected from the heater via local isolators. Some internal components may have sharp edges. Protective gloves should be worn. Inspection Maintenance Coil Frequency of cleaning and inspection depend - Purge any air from the coil using the upon the operating conditions.