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Cougar Fan Coil Unit
Installation, Operation & Maintenance Instructions
Dunham-Bush Ltd, Downley Road, Havant, Hants PO9 2JD
Tel: 023 9247 7700
UK:www.dunham-bush.co.uk
NOTE: PLEASE LEAVE COPIES OF THESE INSTRUCTIONS AND ANY WIRING DIAGRAMS
AND OTHER RELEVENT LITERATURE WITH THE END USER.
INTRODUCTION
This booklet provides guidance to identify, handle,
install and commission Dunham-Bush Cougar fan coil
units as well as guidance for operation and
maintenance.
These instructions are to be read in conjunction
with the wiring diagram supplied with the unit.
The instructions apply to units from the standard range
only. Please study the instructions carefully before
commencing any installation work.
IDENTIFICATION
The fan coil unit serial number, description and figure
number (size) are displayed on a label found on the
unit discharge plenum. If specified, a stencil reference
may also be marked on the discharge plenum for on-
site identification.
Electrical connections
and controls box
Valves and actuators
(coil connections)
Drip tray drain
Filter access
connection
panel
Diagram 1 - Cougar Fig 3 LH connections with octagonal discharge plenum
Email: info@dunham-bush.co.uk
Global:www.dunham-bush.com
Coil/drip tray access panel
DESCRIPTION
Dunham-Bush Cougar fan coil unit comprises a self-
finished galvanised sheet steel casing with multiple
access panels to each part of the fan coil unit,
including fans, motors, air filter, dual purpose
heating/cooling coil, electrical connections box and
discharge plenum. Fan coil units are designed for
continuously variable fan speed, with fan speed set by
a 0-10VDC signal.
STANDARD RANGE MODELS & SIZES
Cougar is a horizontal basic chassis fan coil unit,
available in seven sizes, figs 1 to 7 inclusive
Fan speed and on/off switches
Fan/motor access panel
Document Ref:
127-000-001-B
June 2018
Discharge spigot
Discharge plenum access panel
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Summary of Contents for Dunham-Bush Cougar
- Page 1 Electrical connections and controls box Valves and actuators (coil connections) Drip tray drain Filter access connection panel Coil/drip tray access panel Fan/motor access panel Discharge plenum access panel Diagram 1 - Cougar Fig 3 LH connections with octagonal discharge plenum...
- Page 2 Diagram 2: Range of standard sizes with octagonal discharge plenum ACCESSORIES Standard controls Discharge Configuration Dunham-Bush Cougar fan coil units are available with The standard configuration is for an octagonal accessories for fitted stand alone or remote control. discharge plenum with up to eight spigots (depending These include fitted or remote setpoint adjusters, on size/figure number).
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Page 3: Installation
WARNING: Cougar fan coil units are designed with minimal sharp edges on the chassis. Some internal components on the fan coil may have sharp edges. Care must be taken when handling the product; protective gloves should be worn. FIGURE Dry mass of basic unit with discharge... - Page 4 Diagram 4: Standard spigot sizes and positions Diagram 5: Pipework connections, as viewed on header/connection end of coil Page 4 of 12...
- Page 5 (Refer to diagram 8 for fan switch settings) For further information on any fan coil unit - contact Dunham-Bush, quoting the serial number on the label on the access panel. Page 5 of 12...
- Page 6 Size Cooling coil valve Kv Heating coil valve Kv Figure 1 Figure 2 & 3 Figure 4 & 5 Figure 6 & 7 Table 2 - 4 port valves; recommended Kv values to match coils Coil Section Maximum test pressure Recommended working pressure Cooling 20 bar gauge...
- Page 7 Diagram 9: Typical wiring diagram – Basic AC motor speed Control – Refer to wiring diagram supplied with unit. Page 7 of 12...
- Page 8 Diagram 10: Typical wiring diagram – Basic EC motor speed Control - Refer to wiring diagram supplied with unit Page 8 of 12...
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Page 9: Operation
40°C), using detergent if necessary. The CONTROLS filter must be rinsed and allowed to dry Cougar fan coil units are fitted with a waterside control naturally before replacing. Do not use a system, which typically comprises the following vacuum cleaner, as it can damage the filter elements: - media. -
Page 10: Maintenance
MAINTENANCE Purge any air from both cooling and heating Each fan coil unit is supplied with a wiring sections of the coil using the manual air vents diagram applicable for the particular controls (using a suitable key). and accessories (Refer to pages 7 and 8). The fan motor has ‘sealed for life’... - Page 11 Page 11 of 12...
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Page 12: Date Of Installation
SPARES/SERVICE PLEASE WRITE THE DETAILS OF THE UNIT HERE. These details will be required when ordering spares for you Dunham-Bush Cougar Fan Coil Unit UNIT TYPE AND MODEL INFORMATION SERIAL NUMBER DATE OF INSTALLATION Spare parts/service – Please contact our office, contact information shown below.
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