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dB AM Series User Manual

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Series AM Fan Convectors
Installation, Operation & Maintenance Instructions
Dunham-Bush Ltd, Downley Road, Havant, Hants PO9 2JD
Document Ref:
023 9247 7700
info@dunham-bush.co.uk
121-000-001-D
UK:www.dunham-bush.co.uk
Global:www.dunham-bush.com
July 2021
1
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.
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.
Diagram 1: Series AM Model 13 Figure 04 with left hand coil connections - *items are optional accessories
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dB AM Series Specifications

General IconGeneral
BranddB
ModelAM Series
CategoryHeater
LanguageEnglish

Summary

Controls

Fan Motors

Describes conventional synchronous AC motors and energy efficient EC motors for fan control.

Air Thermostats

Explains fitted and remote air thermostats for automatic temperature control and fan speed adjustment.

Low Temperature Cut-Out (LTC) Thermostat

Describes the LTC thermostat for automatic heater shutdown when water supply is low.

Commissioning Procedures

Coil Purging and System Filling

Procedure for purging air from the coil and filling the system.

Air Thermostat & Switch Operation

Adjusting air thermostats and checking switch functionality.

Cleaning and Maintenance

Maintenance Checks

Details on coil purging, motor bearings, fuse checks, and control system verification.