Series F Fan Coil Units - dbsaltd.co.uk Literature/FCU - Series … · Series ‘F’ Fan Coil Units and guidance on selection, application, use and supply. Each standard unit consists

Series F Fan Coil Units

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ContentsPAGE

IDENTIFICATION 2

Introduction 2

Authority 2

DESCRIPTION 2

Range 3

Composition – features 4

Accessories 6

PERFORMANCE 9

Chilled water cooling 9

Low temperature hot water 14

Electric heating 17

Coil volume 17

Minimum flow rates 17

Hydraulic data 17

Electrical data 18

Unit Masses 19

APPLICATION 20

General 20

Selection 20

Dimensions 21

Engineering specification 29

CONSTRUCTION 31

Handling 31

Storage 31

Preparation 31

Installation 31

Pipework connections 31

Electrical connections 31

Typical wiring diagrams 32

Typical applications 33

PRICES & CONDITIONS OF SALE 35

Prices 35

Condition of Sale 35

TECHNICAL SUPPORTSERVICES 35

Product support 35

SUPPLY 35

Availability 35

Packaging 35

Ordering 35

Identification

IntroductionThis product catalogue providescomprehensive information aboutSeries ‘F’ Fan Coil Units and guidanceon selection, application, use andsupply.

Each standard unit consists of a dualpurpose cooling/heating coil,fans/electric motor and air filter within asteel enclosure. Units provide comfortcooling and heating when used withchilled and hot water services.

A simple Fan Coil Unit description codeis used to identify units andaccessories. Each unit has a uniqueserial number

AuthorityDunham-Bush Limited operates aquality control system and is aregistered firm of Assessed Capability,BS EN ISO 9001: 2000

Description

Each standard Series ‘F’ Fan Coil Unitcomprises a dual purpose coil withseparate connections for chilled and hotwater, drip tray, resiliently mountedslide-out fans/motor platform, electricalconnections box with auto transformerand air filter. These components areassembled into basic and casedmodels.

Each basic model has galvanised sheetsteel self finished panels, assembled toform an enclosure. Each cased modelhas mild steel powder coated panels,extruded aluminium alloy grille(s) androunded MDF side panels.

Model HBHorizontal basic ceiling mounting ‘drawthrough’ unit has an integral dischargeplenum with rectangular flange. Theunit inlet has a similar rectangularflange.

A spigot plate and circular spigots –optional accessories, can be fitted tothe discharge and/or inlet flange.

Each side of the discharge plenum hasa circular aperture fitted with a blankplate which can be removed andreplaced with optional accessory –circular spigot.

Separate bottom panels are providedfor access to the fans/motor platformand air filter. The dual purpose coil andfans/motor platform are removable fromthe bottom of the unit.

Models VBB and VBFVertical basic ‘blow through’ units withtop discharge spigot. Both models havea front access panel to allow the dualpurpose coil and fans/motor platform tobe removed from the front.

Model VBB, wall mounting bottom inlet,has a filter which may be tilted down, toallow removal without detaching theaccess panel.

Model VBF, floor mounting front inlet,has a filter which lifts out from the frontof the unit without detaching the accesspanel.

Model HCHorizontal ceiling mounting cased ‘blowthrough’ unit with rounded MDF sidepanels and curved outlet grille. A hingedinlet grille is provided for filter access. Aseparate bottom access panel withconcealed fixings, allows the dualpurpose coil and the fan/motor platformto be removed from the bottom of theunit. All model HC units are completewith suspension brackets andcondensate pump.

Model VCVertical cased wall mounting ‘blowthrough’ unit with rounded MDF sidepanels and curved hinged outlet grillefor access to optional accessories –switches and controls. Front accesspanel has concealed fixing. Filter ishinged and can be removed withoutremoving the front access panel.

Options – all models4 row chilled water cooling coil, insteadof dual purpose coil.

4 row direct expansion cooling coil,instead of dual purpose coil.

2

RangeThe range consists of three basic uncased models, each produced in six sizes andtwo cased models, each produced in three sizes

FIGURE NUMBER SIZE 2 3 4 5 6 7

Nominal CH.W.S. cooling kW 2.2 3.3 4.3 5.3 6.6 7.8

Nominal L.T.H.W. heating kW 3.4 5.1 6.6 7.7 9.7 10.8

Nominal electric heating kW 2.0 2.5 3.5 5.0 7.0 7.0

Air volume flow rate l/s 125 190 250 310 380 450

Basic models * * * * * *Cased models * * * – – –

Notes1. Nominal CH.W.S. cooling and L.T.H.W. heating based on standard dual purpose coil.2. See performance tables for actual duties at various conditions3. Electric heating is an optional accessory.

Range ofmodels

3

Range of accessoriesACCESSORY MODEL MODEL MODEL MODEL MODEL

HB VBB VBF HC VC

Electric heating O O O O O

Fan controls O O O O O

Thermal controls O O O O O

Inlet spigot plate O

Outlet spigot plate O

100,150,200,250 ∅ spigots O

Inlet box O

Legs O

Inlet grille box O

Condensate pump O O O I O

Acoustic treatment O O O O O

Special finish O O

O = Option accessory I = Included in standard unitNote: Spigot diameters depend on figure number

Model HB

Model VBF

Model HC

Model VC

Model VBB

4

Model HB, horizontal basic end inlet, ‘draw through’, air flow F.C.U.

Model VBB, vertical basic bottom inlet, ‘blow through’ air flow, F.C.U.

Model VBF, vertical basic front inlet, ‘blow through’ air flow, F.C.U.

Composition-Features

Models HB, VBB and VBF● Integral discharge plenum - model HB

● Separate access panels for fans/motor platform and filter - model HB

● Galvanised steel panels

● Dual purpose coil with separate connections for chilled and hot water, removable from unit

● Graded drip tray with 22mm copper connection

● Resiliently mounted fans/motor platform

● 1, 2 or 3 speeds, from auto transformer with 15 speed options and 24 volt A.C. supply for controls

● Fused inlet socket and isolating plug - fan motor circuit

● Washable air filter

Options● 4 rows chilled water cooling only coil,

instead of dual purpose coil

● 4 rows DX direct expansion coil, insteadof dual purpose coil

Accessories● Circular spigots on discharge plenum -

model HB

● Circular spigots on unit inlet - model HB

● Fitted acoustic lining kits, fan section anddischarge plenum - model HB

● Electric heating coil

● Fitted low/medium and medium/highcommissioning switches

● Remote switches

● Waterside control packages

● Fitted condensate pump

● Loose grilles and fixing frames (sizes 2, 3and 4 only)

● Inlet box - model VBB

● Fitted acoustic kit, fan plenum - modelsVBB and VBF

5

Model HC, horizontal cased ‘blow through’ air flow F.C.U.

Model VC, vertical cased, ‘blow through’ air flow F.C.U.

Accessories

Model VC only● Fitted switches concealed below hinged

outlet grille

● Support legs

● Inlet grille box


Composition-Features

Model HC only● Suspension brackets

● Extruded aluminium inlet and outletgrilles, powder coated black

● Hinged inlet grille for filter access

● Access panel safety chains


Models HC and VC● Mild steel casing

● Durable flake grey powder coated finish

● MDF rounded edge side panels

● Concealed access panel fixings

● Washable air filter

● Dual purpose coil with separateconnections for chilled and hot water,coil removable from unit

● Graded drip tray

● Resiliently mounted fans/motor platform

● 1, 2 or 3 speeds, from auto transformerwith 15 speed options and 24 volt A.C.supply for controls

● Fused inlet socket and isolating plug -fan motor circuit

Model VC only● Extruded aluminium outlet grille, powder

coated black

● Curved hinged outlet grille

Options● 4 rows chilled water cooling only coil,

instead of dual purpose coil

● 4 rows DX direct expansion coil, insteadof dual purpose coil

Accessories

Models HC and VC● Electric heating coil

● Fitted low/medium and medium/highcommissioning switches

● Remote switches

● Waterside control packages

● Fan section, fitted acoustic kit

Accessories

Electric HeatingElectric heating with automatic reset hightemperatures cut-out, can be fitted to all models.Figure numbers 2, 3 and 4 have one electric heatingcoil and one 24 volt A.C. power relay. Figurenumbers 5, 6 and 7 have two electric heating coilsand two 24 volt A.C. power relays. Cased models VCand HC offered in sizes 2, 3 and 4 only. Refer toPERFORMANCE section for heat outputs.

Inlet and Outlet Spigot PlatesModel HB can be supplied with spigot plates fitted tothe unit inlet and/or outlet. Spigot plates have anumber of circular apertures which can be fitted withcircular spigots of various diameters or with blankplates.

Circular spigots may also be fitted to either or bothsides of the unit discharge plenum. Please refer tothe drawings on pages 26,27 and 28, for all possiblespigot positions/sizes and page 20 for selection.

Inlet boxModel VBB can be supplied with fitted inlet box tosupport the unit where base mounting required.Figure numbers 2, 3 and 4 inlet box, 100mm high.Figure numbers 5, 6 and 7 inlet box, 150mm high.

LegsModel VC can be supplied with 100mm high fittedlegs, to support the unit where base mounting isrequired.

Inlet grille boxModel VC can be supplied with 135mm high fittedinlet grille box, to support the unit where basemounting is required. The hinged inlet grille allowseasy access to the hinged filter, without removing thefront access panel.

6

Electric heating

Inlet box – model VBB

Legs – model VCInlet grille box – model VC

Inlet and Outlet spigot plates model HB.

7

Fan ControlsAll models can be supplied withswitches for fan motor control. Switchescan be fitted to units or remote switchescan be supplied for flush or surfacemounting as listed below.

Code DescriptionL Remote on/off switchM Remote on/off and high/low

switchesN No switchesP Remote on/off, high/medium/low

switchesR Remote on/off and high/

medium/low switches (see note 3)

S High/medium and medium/lowswitches fitted to electricalconnections box

T High/medium, medium/lowswitches fitted to electricalconnections box and remoteon/off switch

U Fitted high/low switch belowhinged outlet grille

V Fitted high/medium andmedium/low switches belowhinged outlet grille

W Fitted on/off switch below hingedoutlet grille

X Fitted on/off and high/lowswitches below hinged outletgrille

Y Fitted on/off, high/medium andmedium/low switches belowhinged outlet grille

Z Fitted on/off switch below hingedoutlet grille. High/medium and medium/low switches fitted toelectrical connections box

Notes1. Fan control codes L, M, N, P, R, S

and T may be used with all models.2. Fan control codes U, V, W, X, Y and

Z apply to model VC only.3. Fan control code R. This wall

mounting on/off and speed changeswitch combines with thermalcontrols code B - remote detector,code C - remote set point adjusteror code D - remote detector andset-point adjuster to form a singleitem.

4. Fan control codes which include anon/off switch (codes L, M, P, R, T,W, X, Y and Z) cannot be used withelectric heating.

Stand alone/master/slave fancontrolsUnits supplied with fitted switches are‘stand alone’, each unit controlled by itsown switch. Units supplied with remoteswitches are normally ‘stand alone’ butfan control codes P and R only, canalso be used to control several ‘slaveunits’ from one ‘master’ unit. For thesecontrol modes, both master and slaveunits are fitted with three 24 volt A.C.coil relays.

Code DescriptionA stand aloneM masterS slave

Condensate pumpWhere it is not practicable or desirableto remove condensate from the driptray by gravity, a condensate pump canbe fitted to models HB, VBB, VBF andVC. A condensate pump is fitted asstandard on model HC.

Acoustic treatmentAcoustic treatment can be applied tothe fan section of all models and thedischarge plenum of model HB. Itconsists of fitting acoustic open cellflexible foam meeting class ‘O’ of thecurrent building regulations. Fireperformance BS476, part 7: class 1.

Special finishModel HC and VC only can be suppliedwith casings and end panels finished inany of our preferred range of colours,excluding textured finishes. Othercolours to BS 4800 and RAL rangesmay be available subject to quantity.

Loose grille and fixing frameLoose grilles can be supplied for usewith basic models, figure numbers 2, 3and 4. Grille surrounds are extrudedaluminium alloy, satin anodised. Grillecores are extruded aluminium alloy andconsist of nine chevron shaped bars.Grille cores are powder coated black10% gloss. A fixing frame can besupplied for ceiling, sill or facia panelfixing.

Fan SpeedsUnits are pre-set for one, two or threespeeds from the range listed below.

Code Description1 Low speed2 Medium speed3 High speed4 Low/medium speeds5 Low/high speeds6 Medium/high speeds7 Low/medium/high

speedsQ Special speeds

Code ‘S’ switches

Code ‘Y’ switches

Condensate pump - model HC

8

Thermal ControlsThermal controls automatically adjust the Series ‘F’ Fan Coil Unitperformance in accordance with demand. Complete pre-wired andpiped thermal packages can be provided.

One stage controls for cooling only, are intended for use with a 2pipe system. They comprise controller, 4 port valve/actuator andfitted or remote air temperature detector.

Two stage controls for cooling and heating are intended for usewith a 4 pipe system. They comprise sequence controller withadjustable ‘dead band’, two 4 port valves/actuators and fitted orremote air temperature detector.

Two stage controls for chilled water and electric heating areintended for use with a two pipe system. They comprise sequencecontroller with ‘dead band’, 4 port valve/actuator, power relay andelectric heating coil with high temperature cut-out.

The following thermal controls can be supplied for single stagecooling and two stage cooling and heating. Heating coil may beL.T.H.W. or electric.

Code DescriptionA Fitted controller with set-point adjustment, fitted return

air detectorB Fitted controller with set-point adjustment, remote

detectorC Fitted controller, fitted return air detector remote

set-point adjustmentD Fitted controller, remote set-point adjustment and

detectorG This code applies to model VC only. Fitted controller,

set-point adjustment below hinged outlet grille, fittedreturn air detector

H This code applies to model VC only. Fitted controller,set-point adjustment below hinged outlet grille, remoteair detector

F ‘free issue’ controlsCustomers may supply their own ‘free issue’ controls,which we undertake to fit to Series ‘F’ Fan Coil Unitsduring assembly. We provide fixings for controller andsensor, if required. We also provide pipe fittings forconnection of 4 port (40mm centres) valves to coil, andwhen necessary, a 24 volt A.C. supply for the controller.Please discuss your requirements with our localSales Engineer.

N No controlsQ Special controls

Stand alone/master/slave thermal controlsUnits supplied with thermal controls are normally ‘stand alone’,each unit controlled by its own controls. Thermal controls, codesA, B, C and D only, fitted to a ‘master’ unit can also be used tocontrol several ‘slave’ units. Slave units are fitted with 4 portvalve(s) and actuator(s) only.

Notes:1. Master/slaving excludes units fitted with electric heater.2. Quantity of slave units per master unit depends on make ofcontrols.

4 pipe model HB dual purpose coil.

4 pipe model VBB dual purpose coil.

2 pipe model VBB 4 row chilled water & electric heating.

9

Cooling – Dual purpose coil. Total heat (TH) kW. Sensible heat (SH) kW, air volume flow rate (AVFR)l/s, air off coil, °C DB and WB.

Table 1 Conditions: Chilled Water 5.5°C on coil, 11.0°C off coil at each speed, air on 20°C, 50% RH.

Low Speed Medium Speed High Speed

kW l/s °C kW l/s °C kW l/s °CTH SH AVFR DB WB TH SH AVFR DB WB TH SH AVFR DB WB

2 1.3 1.2 100 10.5 9.4 1.7 1.5 125 10.2 9.2 1.9 1.7 140 10.2 9.2

3 2.1 1.9 160 10.3 9.2 2.5 2.2 190 10.3 9.2 2.7 2.4 210 10.4 9.4

4 2.7 2.5 220 10.8 9.6 3.2 2.9 250 10.5 9.4 3.5 3.2 280 10.7 9.5

5 3.0 2.7 250 11.1 9.7 3.6 3.3 310 11.3 9.9 4.1 3.8 360 11.5 10.0

6 3.9 3.6 320 11.0 9.7 4.6 4.2 380 11.1 9.7 5.4 4.9 450 11.0 9.7

7 4.6 4.2 380 11.1 9.7 5.4 4.9 450 11.0 9.7 6.0 5.5 500 11.0 9.7

Notes: 1) Model HB, air volume flow rate at medium speed against 25Pa external resistance.2) Model VBB and VBF, air volume flow rate at medium speed against 12Pa external resistance.3) Cased models HC and VC are produced in figure numbers 2, 3 and 4 only.

Cooling – Dual purpose coil. Total heat (TH) kW. Sensible heat (SH) kW, air volume flow rate (AVFR) l/s, air off coil, °C DB and WB.




2 1.3 1.2 100 10.4 9.4 1.5 1.4 125 11.0 9.7 1.7 1.5 140 11.0 9.7

3 1.8 1.7 160 11.4 9.9 2.2 2.0 190 11.2 9.8 2.4 2.2 210 11.3 9.9

4 2.5 2.3 220 11.4 9.9 2.9 2.7 250 11.2 9.8 3.2 2.9 280 11.3 9.9

5 2.8 2.6 250 11.4 9.9 3.3 3.1 310 12.0 10.2 3.8 3.5 360 12.0 10.2

6 3.7 3.4 320 11.4 9.9 4.2 3.8 380 11.7 10.1 5.0 4.6 450 11.6 10.0

7 4.2 3.9 380 11.7 10.1 5.0 4.6 450 11.6 10.0 5.6 5.1 500 11.5 10.0






2 1.2 1.1 100 10.9 9.7 1.3 1.2 125 12.0 10.3 1.4 1.3 140 12.3 10.4

3 1.6 1.5 160 12.4 9.5 1.9 1.8 190 12.2 10.4 2.1 2.0 210 12.2 10.4

4 2.2 2.1 220 12.2 10.4 2.5 2.4 250 12.2 10.4 2.7 2.5 280 12.5 10.5

5 2.4 2.3 250 12.5 10.5 2.8 2.6 310 12.9 10.7 3.2 3.0 360 13.1 10.8

6 3.2 3.0 320 12.4 10.5 3.6 3.4 380 12.7 10.6 4.1 3.8 450 13.0 10.7

7 3.6 3.4 380 12.7 10.6 4.1 3.8 450 13.0 10.7 4.6 4.3 500 12.9 10.7


FigureNumber

Performance

FigureNumber

FigureNumber

10





2 1.5 1.3 100 10.5 9.6 1.9 1.6 125 10.4 9.6 2.2 1.9 140 10.1 9.4

3 2.4 2.1 160 10.4 9.5 2.9 2.5 190 10.2 9.4 3.1 2.7 210 10.5 9.6

4 3.3 2.8 220 10.4 9.5 3.7 3.2 250 10.5 9.6 4.2 3.6 280 10.4 9.6

5 3.6 3.1 250 10.8 9.8 4.3 3.8 310 11.1 10.0 5.0 4.4 360 11.1 10.0

6 4.8 4.1 320 10.4 9.5 5.7 4.9 380 10.4 9.6 6.7 5.8 450 10.5 9.6

7 5.7 4.9 380 10.4 9.6 6.7 5.8 450 10.5 9.6 7.4 6.4 500 10.5 9.6


Cooling – Dual purpose coil. Total heat (TH) kW. Sensible heat (SH) kW, air volume flow rate (AVFR)‘/s, air off coil, °C DB and WB.




2 1.5 1.3 100 10.4 9.6 1.8 1.6 125 10.8 9.8 1.9 1.7 140 11.2 10.1

3 2.1 1.9 160 11.3 10.2 2.5 2.2 190 11.3 10.2 2.7 2.4 210 11.5 10.3

4 2.9 2.6 220 11.4 10.2 3.3 2.9 250 11.3 10.2 3.7 3.3 280 11.3 10.2

5 3.3 2.9 250 11.4 10.2 4.1 3.6 310 11.4 10.2 4.7 4.2 360 11.5 10.3

6 4.2 3.7 320 11.5 10.3 5.0 4.5 380 11.4 10.2 5.9 5.3 450 11.4 10.2

7 5.0 4.5 380 11.4 10.2 5.9 5.3 450 11.4 10.2 6.5 5.8 500 11.5 10.3






2 1.3 1.2 100 11.4 10.3 1.5 1.4 125 12.0 10.6 1.7 1.5 140 12.0 10.6

3 1.8 1.7 160 12.4 10.8 2.2 2.0 190 12.2 10.7 2.4 2.2 210 12.3 10.8

4 2.5 2.3 220 12.4 10.8 2.8 2.6 250 12.5 10.9 3.2 2.9 280 12.3 10.8

5 2.8 2.6 250 12.4 10.8 3.4 3.1 310 12.7 11.0 4.0 3.7 360 12.6 10.9

6 3.7 3.4 320 12.3 10.8 4.3 4.0 380 12.5 10.9 5.1 4.7 450 12.4 10.8

7 4.3 4.0 380 12.5 10.9 5.1 4.7 450 12.4 10.8 5.6 5.2 500 12.5 10.9


FigureNumber

FigureNumber

FigureNumber

11





2 1.8 1.5 100 10.2 9.5 2.2 1.8 125 10.4 9.7 2.5 2.0 140 10.2 9.6

3 2.8 2.3 160 10.3 9.6 3.3 2.7 190 10.3 9.7 3.7 3.0 210 10.4 9.7

4 3.8 3.1 220 10.4 9.7 4.3 3.5 250 10.5 9.7 4.8 3.9 280 10.5 9.8

5 4.4 3.6 250 10.3 9.7 5.3 4.3 310 10.6 9.8 6.0 5.0 360 10.8 10.0

6 5.5 4.5 320 10.5 9.8 6.6 5.4 380 10.4 9.1 7.8 6.3 450 10.4 9.7

7 6.6 5.4 380 10.4 9.1 7.8 6.3 450 10.4 9.7 8.3 6.9 500 10.8 10.0






2 1.7 1.4 100 10.6 9.9 2.1 1.7 125 10.7 10.0 2.4 2.0 140 10.5 9.8

3 2.4 2.0 160 11.4 10.5 2.9 2.5 190 11.3 10.4 3.2 2.7 210 11.3 10.4

4 3.3 2.8 220 11.4 10.5 3.8 3.2 250 11.4 10.4 4.2 3.6 280 11.5 10.5

5 3.8 3.2 250 11.4 10.5 4.7 4.0 310 11.5 10.5 5.5 4.7 360 11.4 10.5

6 4.8 4.1 320 11.5 10.5 5.7 4.8 380 11.5 10.5 6.8 5.8 450 11.4 10.5

7 5.7 4.8 380 11.5 10.5 6.8 5.8 450 11.4 10.5 7.5 6.4 500 11.5 10.5






2 1.5 1.3 100 11.4 10.6 1.8 1.6 125 11.8 10.8 2.0 1.7 140 11.8 10.8

3 2.1 1.9 160 12.3 11.1 2.5 2.2 190 12.3 11.1 2.7 2.4 210 12.5 11.2

4 2.9 2.6 220 12.3 11.1 3.3 2.9 250 12.3 11.1 3.7 3.3 280 12.3 11.1

5 3.3 2.9 250 12.4 11.2 4.1 3.6 310 12.4 11.1 4.7 4.2 360 12.5 11.2

6 4.2 3.7 320 12.5 11.2 5.0 4.5 380 12.3 11.1 5.9 5.3 450 12.4 11.1

7 5.0 4.5 380 12.3 11.1 5.9 5.3 450 12.4 11.1 6.5 5.8 500 12.4 11.2


FigureNumber

FigureNumber

FigureNumber

12





2 2.3 1.7 100 10.3 9.8 2.9 2.1 125 10.2 9.7 3.2 2.3 140 10.4 9.8

3 3.7 2.7 160 10.3 9.8 4.4 3.2 190 10.3 9.8 4.8 3.5 210 10.4 9.9

4 5.0 3.7 220 10.3 9.8 5.6 4.1 250 10.5 9.9 6.3 4.6 280 10.4 9.9

5 5.7 4.2 250 10.4 9.9 7.0 5.2 310 10.5 10.0 7.4 5.6 360 11.3 10.6

6 7.2 5.3 320 10.4 9.9 8.5 6.3 380 10.5 10.0 9.5 7.1 450 11.0 10.4

7 8.5 6.3 380 10.5 10.0 9.5 7.1 450 11.0 10.4 10.0 7.6 500 11.4 10.7






2 2.3 1.7 100 10.3 9.8 2.9 2.1 125 10.2 9.7 3.2 2.3 140 10.3 9.8

3 3.6 2.7 160 10.5 10.0 4.3 3.2 190 10.5 10.0 4.8 3.6 210 10.4 9.9

4 4.7 3.5 220 10.8 10.3 5.6 4.1 250 10.4 9.9 6.2 4.6 280 10.5 10.0

5 5.0 3.9 250 11.5 10.8 6.2 4.8 310 11.5 10.8 7.2 5.5 360 11.5 10.8

6 6.8 5.1 320 10.9 10.3 7.8 5.9 380 11.3 10.6 9.0 6.9 450 11.4 10.8

7 7.6 5.9 380 11.4 10.8 9.0 6.9 450 11.4 10.8 9.9 7.6 500 11.5 10.8






2 2.0 1.5 100 11.4 10.8 2.5 1.9 125 11.4 10.8 2.8 2.2 140 11.4 10.8

3 3.0 2.4 160 11.8 11.1 3.8 2.9 190 11.5 10.9 4.2 3.2 210 11.4 10.8

4 3.9 3.1 220 12.3 11.5 4.7 3.7 250 11.8 11.1 5.2 4.1 280 11.9 11.2

5 4.4 3.6 250 12.4 11.6 5.5 4.4 310 12.4 11.6 6.3 5.1 360 12.5 11.7

6 5.8 4.6 320 12.1 11.4 6.6 5.3 380 12.5 11.6 7.8 6.3 450 12.5 11.7

7 6.6 5.3 380 12.5 11.6 7.8 6.3 450 12.5 11.7 8.7 7.0 500 12.5 11.6


FigureNumber

FigureNumber

FigureNumber

13

Cooling – 4 row coil. Total heat (TH) kW. Sensible heat (SH) kW, air volume flow rate (AVFR)l/s, air off coil, °C DB and WB.




2 1.3 1.2 100 10.4 9.4 1.7 1.5 125 10.1 9.2 1.9 1.7 140 10.1 9.2

3 1.9 1.7 160 11.0 9.7 2.2 2.0 190 11.2 9.8 2.4 2.2 210 11.3 9.9

4 2.5 2.3 220 11.4 9.9 2.9 2.7 250 11.2 9.8 3.2 2.9 280 11.3 9.9

5 2.8 2.6 250 11.4 9.9 3.6 3.3 310 11.3 9.9 4.1 3.8 360 11.4 10.0

6 3.7 3.4 320 11.4 9.9 4.4 4.0 380 11.3 9.9 5.1 4.7 450 11.4 9.9

7 4.4 4.0 380 11.3 9.9 5.1 4.7 450 11.4 9.9 5.7 5.2 500 11.4 9.9






2 1.8 1.5 100 10.2 9.6 2.2 1.8 125 10.3 9.7 2.5 2.0 140 10.2 9.6

3 2.6 2.2 160 10.8 10.1 3.3 2.7 190 10.3 9.7 3.6 3.0 210 10.6 9.9

4 3.7 3.1 220 10.6 9.9 4.3 3.5 250 10.4 9.7 4.8 3.9 280 10.4 9.8

5 4.2 3.5 250 10.7 10.0 5.0 4.2 310 11.0 10.2 5.8 4.9 360 11.0 10.2

6 5.5 4.5 320 10.4 9.8 6.5 5.3 380 10.5 9.8 7.7 6.3 450 10.5 9.8

7 6.5 5.3 380 10.5 9.8 7.7 6.3 450 10.5 9.8 8.4 7.0 500 10.6 9.9






2 2.3 1.7 100 10.3 9.8 2.9 2.1 125 10.2 9.7 3.2 2.3 140 10.3 9.8

3 3.7 2.7 160 10.3 9.8 4.3 3.2 190 10.5 10.0 4.8 3.6 210 10.4 9.9

4 4.9 3.6 220 10.5 10.0 5.6 4.1 250 10.4 9.9 6.3 4.7 280 10.4 9.9

5 5.7 4.2 250 10.3 9.9 7.0 5.2 310 10.5 10.0 7.7 5.8 360 10.9 10.3

6 7.2 5.3 320 10.4 9.9 8.5 6.3 380 10.5 10.0 9.9 7.3 450 10.6 10.1

7 8.5 6.3 380 10.5 10.0 9.9 7.3 450 10.6 10.1 10.3 7.8 500 11.2 10.5


FigureNumber

FigureNumber

FigureNumber

14





2 3.0 2.1 100 10.1 9.8 3.7 2.6 125 10.3 9.9 4.1 2.9 140 10.4 10.0

3 4.7 3.2 160 10.4 10.0 5.5 3.8 190 10.8 10.4 5.6 4.0 210 11.4 10.9

4 6.4 4.5 220 10.3 10.0 7.2 5.0 250 10.5 10.1 7.7 5.5 280 11.0 10.5

5 7.2 5.0 250 10.6 10.2 8.2 5.9 310 11.5 11.0 9.6 6.9 360 11.4 10.9

6 9.3 6.5 320 10.4 10.0 10.0 7.2 380 11.4 10.9 11.8 8.5 450 11.5 11.0

7 10.0 7.2 380 11.4 10.9 11.8 8.5 450 11.5 11.0 12.7 9.3 500 11.8 11.2


Heating – Dual purpose coil. Heat output (SH) kW, air volume flow rate (AVFR) l/s, air off coil °C DB.

Table 17 Conditions: L.T.H.W. 80°C on coil, 70°C off coil at each speed, air on 20°C.


kW l/s °C kW l/s °C kW l/s °CSH AVFR DB SH AVFR DB SH AVFR DB

2 2.8 100 42.7 3.4 125 42.1 3.6 140 40.9

3 4.4 160 42.3 5.1 190 41.7 5.4 210 40.8

4 5.9 220 41.6 6.6 250 41.3 7.1 280 40.4

5 6.7 250 41.7 7.7 310 40.1 8.5 360 39.1

6 8.7 320 42.1 9.7 380 40.7 10.8 450 39.5

7 9.7 380 40.7 10.8 450 39.5 11.7 500 39.0


Heating – Dual purpose coil. Heat output (SH) kW, air volume flow rate (AVFR) l/s, air off coil °C.




2 3.0 100 40.3 3.6 125 39.4 3.9 140 38.6

3 4.7 160 39.8 5.5 190 39.4 5.9 210 38.7

4 6.4 220 39.4 7.1 250 38.9 7.6 280 37.9

5 7.2 250 39.3 8.3 310 37.7 9.2 360 36.7

6 9.3 320 39.6 10.5 380 38.5 11.7 450 37.1

7 10.5 380 38.5 11.7 450 37.1 12.6 500 36.5


FigureNumber

FigureNumber

FigureNumber

15





2 2.5 100 40.3 3.0 125 39.5 3.3 140 39.1

3 4.0 160 40.2 4.6 190 39.6 4.9 210 38.9

4 5.4 220 39.8 6.0 250 39.3 6.5 280 38.7

5 6.0 250 39.4 6.9 310 38.0 7.7 360 37.3

6 7.8 320 39.8 8.7 380 38.6 9.8 450 37.7

7 8.7 380 38.6 9.8 450 37.7 10.6 500 37.2






2 2.7 100 37.9 3.3 125 37.4 3.6 140 36.9

3 4.3 160 37.7 5.0 190 37.3 5.4 210 36.8

4 5.8 220 37.2 6.5 250 37.0 7.0 280 36.2

5 6.5 250 37.0 7.5 310 35.6 8.3 360 34.7

6 8.5 320 37.6 9.5 380 36.3 10.7 450 35.3

7 9.5 380 36.3 10.7 450 35.3 11.4 500 34.5


Heating – Dual purpose coil. Heat output (SH) kW, air volume flow rate (AVFR) l/s, air off coil °C.




2 3.1 100 45.1 3.7 125 44.0 4.0 140 43.2

3 4.9 160 44.8 5.6 190 43.9 5.9 210 42.7

4 6.5 220 43.8 7.3 250 43.5 7.8 280 42.5

5 7.3 250 43.6 8.4 310 41.9 9.3 360 40.9

6 9.5 320 44.1 10.6 380 42.7 12.0 450 41.7

7 10.6 380 42.7 12.0 450 41.7 12.8 500 40.8


FigureNumber

FigureNumber

FigureNumber

16





2 3.3 100 42.8 3.9 125 41.3 4.3 140 40.9

3 5.2 160 42.3 6.0 190 41.6 6.4 210 40.7

4 7.0 220 41.7 7.7 250 40.8 8.3 280 39.9

5 7.8 250 41.3 9.0 310 39.5 10.0 360 38.5

6 10.2 320 41.9 11.4 380 40.4 12.8 450 39.1

7 11.4 380 40.4 12.8 450 39.1 13.7 500 38.3


Heating – 4 row coil, heat output (SH) kW, air volume flow rate (AVFR) l/s, air off coil °C

Table 23

Conditions: L.T.H.W. 45°C on coil, 40°C off coil at each speed, air on 20°C.



2 2.8 100 42.6 3.5 125 42.6 3.8 140 41.9

3 4.5 160 42.6 5.2 190 42.0 5.7 210 41.9

4 6.1 220 42.7 6.9 250 42.6 7.4 280 41.6

5 6.8 250 41.9 8.3 310 41.6 9.4 360 41.1

6 8.7 320 42.1 10.1 380 41.7 11.9 450 41.5

7 10.1 380 41.7 11.9 450 41.5 12.6 500 40.5


Heating – 4 row coil, heat output (SH) kW, air volume flow rate (AVFR) l/s, air off coil °C

Table 24

Conditions: L.T.H.W. 45°C on coil, 40°C off coil at each speed, air on 16°C.



2 3.3 100 42.6 4.0 125 41.9 4.5 140 42.0

3 5.1 160 41.6 6.1 190 41.9 6.7 210 41.7

4 7.1 220 42.4 7.9 250 41.8 8.8 280 41.6

5 7.9 250 41.5 9.7 310 41.3 11.0 360 40.7

6 10.1 320 41.7 11.9 380 41.5 13.6 450 40.6

7 11.9 380 41.5 13.6 450 40.6 15.1 500 40.6


FigureNumber

FigureNumber

FigureNumber

17

Electric heating coil, heat output (SH) kW, air volume flow rate (AVFR) l/s, air off coil °C DB.

Table 25 Conditions: 230 volt, single phase, 50 Hertz supply, air on, 20°C.



2 2.0 100 36.2 2.0 125 33 2.0 140 31.6

3 2.5 160 32.7 2.5 190 30.7 2.5 210 29.7

4 3.5 220 32.9 3.5 250 31.4 3.5 280 30.1

5 5.0 250 36.2 5.0 310 33.1 5.0 360 31.3

6 7.0 320 37.7 7.0 380 34.9 7.0 450 32.6

7 7.0 380 34.9 7.0 430 32.6 7.0 500 31.4

Notes: 1) Model HB, air volume flow rate at medium speed against 25Pa external resistance.2) Model VBB and VBF, air volume flow rate at medium speed against 12Pa external resistance.3) Cased models HC and VC are produced in figure numbers 2, 3 and 4 only.4) Figure numbers 2, 3 and 4 have one electric heating coil and one 24 volt A.C. coil relay.

Figure numbers 5, 6 and 7 have two electric heating coils and two 24 volt A.C. coil relays.

Hydraulic Data – Dual purpose coil

Table 26

Coil water content – litre Rec. minimum water flow rate kg/s

Cooling Heating Cooling Heating

2 1.63 0.28 0.0122 0.0061

3 2.29 0.37 0.0183 0.0061

4 2.95 0.44 0.0244 0.0122

5 2.77 0.51 0.0244 0.0183

6 3.57 0.65 0.0305 0.0183

7 3.57 0.65 0.0305 0.0183

Hydraulic Data – 4 row coil

Table 27Coil water content – litre Rec. minimum water flow rate kg/s

Cooling Heating Cooling Heating

2 1.89 1.89 0.0122 0.0122

3 2.64 2.64 0.0183 0.0183

4 3.39 3.39 0.0244 0.0244

5 3.27 3.27 0.0244 0.0244

6 4.22 4.22 0.0305 0.0305

7 4.22 4.22 0.0305 0.0305

Note: The minimum flow rates listed are based on water. Higher flow rates will be necessary if anti-freeze is added. Please consult Dunham Bush.

FigureNumber

FigureNumber

FigureNumber

18

Electrical Data-motors

Table 28

Figure Nominal Power Starting Current Max F.L.C.Number Watts amperes amperes

2 40 0.75 0.5

3 75 1.15 0.6

4 75 1.15 0.6

5 180 3.50 1.4

6 180 3.50 1.4

7 180 3.50 1.4

Hydraulic resistance graphscoil only

4 - port valves kv values

Table 29

Figure cooling coil heating coilnumber valve kv valve kv

2 0.63 0.63

3 1.00 1.00

4,5,6 & 7 1.60 1.60

Notes:1) Cooling coil kv is for dual purpose and 4 row coil.2) Flow coefficient kv is flow in m3/h for a 1 bar

pressure drop.3) 4 port valves are accessories.

19

FilterThe filter shall be class G2(EU2) to BS EN 779.

Sound dataSeries ‘F’ Fan Coil Units are‘commercially quiet’ and the optionalaccessory, fitted acoustic treatment,can be further applied to reduce soundlevels.

For application where extremely lowsound levels are necessary, we canselect units to operate at speeds lowerthan the low speed data listed in theperformance section of this catalogue.Sound power levels, available onrequest, may be used to calculate roomNR or NC levels in accordance with theCIBSE guide or other procedures.

Approximate masses, kilogrammes

Table 30

Figure Model HB ‘Models VBB, VBF‘ Model HC Model VC Model VCNumber Inlet grille box

2 39 32 54 47 4

3 48 40 69 57 5

4 57 48 74 65 6

5 61 52 – – –

6 72 63 – – –

7 72 63 – – –

Notes: 1) Masses are with dry coils2) ‘If optional acoustic kit is fitted, add 5% to models HC and VC.’

‘Add 10% to models HB, VBB and VBF.’

Model VC with fitted inlet grille box (optional accessory).

20

Application

GeneralThe versatile range of horizontal and vertical basic and casedmodels is suitable for comfort cooling and heating of newbuildings and those to be refurbished, typically most types ofoffice buildings, hotels, restaurants and department stores. Basichorizontal units are intended for concealed installation, in aceiling void. Basic vertical units are intended for concealedapplications under a window sill and behind a decorative buildersfacia panel. In both applications it is absolutely essential toensure adequate access is provided for maintenance.Where it is impracticable to conceal basic units, attractivelystyled cased units for horizontal and vertical installation can beprovided.

SelectionFrom the cooling and heating loads calculated for each room orzone, the appropriate size and quantity of Series ‘F’ Fan CoilUnits can be selected.Model HB air volume flow rates listed in the performance tablesare for basic units with rectangular inlet and outlet, workingagainst an external resistance of 25 Pa. If accessories - circularspigots are used, the available fan pressure to overcome anyexternal resistance will depend upon the number and size ofspigots used. Please contact your local Dunham-Bush SalesAgent.The air ‘on’ condition is usually taken as the desired roomcondition but due allowance must be made for the mixed air ‘on’condition and revised performance, when a proportion oftempered or outside air is introduced. If the application includescircular ducting connected to model HB, ensure duct velocitiesand pressure losses are within acceptable limits to preventexcessive pressure drops and noise regeneration.The following information is required to make a full selection.

Calculate water mass flow rates from the formula

kg/sec = kW (Total Cooling or Heating)Water ∆t x 4.187

where ∆t is water temperature difference between ‘on’ and ‘off’coil. Read off water-side pressure drop from graphs on page 18

The ‘off’ coil DB air temperature can be estimated, if required,from the formula:

∆t air = kW (Sensible Cooling or Heating)Air Flow, lit/sec x 0.00122

where ∆t is the air temperature difference across the unit, to beadded to, or subtracted from the air ‘on’ coil temperature, and0.00122 is an approximation based on the specific volume andspecific heat capacity of entering air.

Non-Catalogue SelectionsThe performance tables cover a range of common operatingconditions. For other conditions we offer a computerisedselection service. Please contact your Dunham-BushSales Agent.

CoolingTotal air volume flow rate l/sFresh air quantity (if applicable) l/sSensible heat extraction kWTotal heat extraction kWRoom design conditions °C DB/WBFresh air condition °C DB/WBChilled water flow temp °CChilled water return temp °CPercentage by mass or volume and type of any anti-freezeExternal pressure loss (ducting etc.)if applicable, including inlet and outlet plenum resistances. Pa

HeatingToal air volume flow rate l/sFresh air quantity (if applicable) l/s Heat loss kWFresh air temperature °CRoom conditions °CL.T.H.W. flow temp °CL.T.H.W. return temp °CExternal pressure loss (ducting etc.)if applicable, including inlet and outlet plenum resistances. Pa

21

Dimensions

SE

RIE

S F

FAN

CO

ILU

NIT

MO

DE

LV

BB

22

SERIES F FAN COIL UNIT MODEL HB

23

SE

RIE

S F

FAN

CO

ILU

NIT

MO

DE

LV

BF

24

SE

RIE

S F

FAN

CO

ILU

NIT

MO

DE

LH

C

25

SE

RIE

S F

FAN

CO

ILU

NIT

MO

DE

LV

C

26

SE

RIE

S F

FAN

CO

ILU

NIT

MO

DE

LH

B F

IG. 2 &

5IN

LET

& O

UT

LET

CIR

CU

LAR

SP

IGO

TS

27

SE

RIE

S F

FAN

CO

ILU

NIT

MO

DE

LH

B F

IG. 4

INLE

T&

OU

TLE

TC

IRC

ULA

R S

PIG

OT

S

28

SE

RIE

S F

FAN

CO

ILU

NIT

MO

DE

LH

B F

IG. 3,6 &

7IN

LET

& O

UT

LET

CIR

CU

LAR

SP

IGO

TS

29

Engineering Specification

Series ‘F’ Fan Coil Units shall be manufactured by Dunham-Bush Limited, European Headquarters, Downley Road,Havant, Hampshire, PO9 2JD. The models, figure numbersand quantities shall be as indicated in the schedule and/or onthe drawings. The construction of all units shall comply withthe following specification.

Each unit shall comprise a dual purpose coil with separateconnections for chilled and hot water, drip tray, fans/motorplatform, electrical connections box and air filter. If specified,a 4 row chilled water coil or 4 row direct expansion coil shallbe provided instead of the standard dual purpose coil.

Basic unitsBasic units shall be constructed from 0.9mm galvanised steelself finished panels.

Model HBHorizontal basic shall be a ‘draw through’ unit with integraldischarge plenum. If specified, a spigot plate and circularspigots shall be provided on the discharge plenum and/or unitinlet. Separate bottom access panels shall be provided forfans/motor platform and air fitter.

Models VBB and VBFVertical basic ‘blow through’ units shall have top dischargespigot and front access panel. Model VBB air filter frameshall be fitted on pivots so that it can be tilted and the filterremoved, without detaching the front access panel. ModelVBF air filter shall lift out from the front, without detaching thefront access panel.

Cased unitsCasings shall be constructed from 1.2mm mild steel powdercoated panels. Rounded MDF panels shall be fitted on eachside of the casing.

Model HCHorizontal cased ‘blow through’ unit shall have curved outletgrille to match the casing profile. The inlet grille shall behinged to allow the filter to be easily removed. The bottomaccess panel shall have concealed fixings and safety chains.Each unit shall be supplied with a condensation pump andsuspension brackets.

Model VCVertical cased ‘blow through’ unit shall have hinged curvedoutlet grille, to match the casing profile. The air filter frameshall be fitted on pivots so that it can be tilted and easilyremoved. The front access panel shall have concealedfixings.

Dual purpose coilThe coil shall be constructed from 4 rows of 9.53mm O.D.solid drawn copper tubes, expanded into single platecorrugated aluminium fins and brazed to copper headers. Thecoil tubes shall be divided into two sections, with separate15mm O.D. plain copper tube connections, to BS2871: part 1,table X, for chilled and hot water. Manual air vents shall beprovided to facilitate purging air from each coil section. Coilconnections shall be left or right hand, determined lookinginto the discharge air flow and at the access panel.

If specified, a 4 row chilled water or 4 row direct expansioncoil shall be provided instead of a dual purpose coil.

Test and working pressuresEach coil shall be tested to 24 bar gauge, air under water.Coil working pressure shall be limited to 7 bar gauge toensure safe operation of manual air vents fitted to coils, or alower pressure, if appropriate to any accessories fitted, suchas valves.

Drip trayEach unit shall be fitted with a drip tray manufactured from0.9mm galvanised steel, externally insulated with bitumasticcompound. The drip tray shall be graded and extended underreturn bends, headers and optional control valves, so thatcondensate falls to a low point. All drip trays except for modelHC, shall have a 22mm O.D. copper connection, Model HCshall be fitted with a condensate pump.

Fans/motor platformThe fans/motor platform shall be manufactured from 1.6mmgalvanised steel and shall be fitted with galvanised steel fanhousings, resiliently mounted motor and centrifugal fans. Thewhole assembly shall be mounted on polychloroprenechannels and shall be designed for easy slide-out removal.The fans/motor platform shall be complete with a cableharness manufactured from heat resistant PVC insulated wireterminating in a quick release connector.

Fan motorMotors shall be quiet running, resiliently mounted capacitorstart and run, totally enclosed, having class ‘B’ insulation andrated in accordance with BS5000, part 11. All motors shall bedouble shaft with sealed for life sleeve or ball bearings.Motors shall be wound 230/240 volts, single phase, 50 Hertz.

Centrifugal fansEach fan shall be double inlet, forward curved multi-bladecentrifugal type, statistically and dynamically balanced. Eachfan shall be secured directly to a motor shaft by a grub screw.

30

Electrical connections boxEach unit shall be provided with an electrical connections boxcontaining a terminal block and auto-transformer. Theelectrical connections box for model HB shall have a hingedcover. All other models shall have a lift-off cover. Eachelectrical connections box shall have a fused I.E.C. mainsinlet socket, with spare fuse in the slide-out carrier and amains inlet connector. Figure numbers 2,3 and 4 shall befused 2 amps. Figure numbers 5,6 and 7 shall be fused 5amps.

Fan motor speed controlAn auto-transformer with fifteen speed options shall be fittedin the electrical connections box. Tranformers shall be wiredto provide one, two or three speeds from the range low,medium and high. If specified transformers shall be set fornon-standard lower or higher speeds. An isolated 24 volt A.C.(30VA) supply shall be provided for operation of any controlsspecified.

Air filterAir filter shall be washable, Interfilta T15/155NG or equal ,composed of synthetic fibres bonded with resin. Filters shallbe class G2 (EU2) to BS EN 779.

GrillesModel HC shall be fitted with hinged inlet and curved outletgrille. Model VC shall be fitted with curved hinged outlet grille.If specified, an inlet grille box shall be fitted to model VC.

Grilles shall be extruded aluminium alloy section having ninechevron section bars.

IdentificationEach unit shall be fitted with a nameplate indicating themodel, figure number and unique serial number.

PerformanceUnits shall be tested and rated in accordance with BS4856,parts 1 and 2.

FinishBasic models shall be self finished galvanised steel. Casedmodels shall have all mild steel panels and grilles, epoxypolyester powder coated.

Model HC panels and back, colour flake grey, 10 A 03 36%gloss

Model VC front and side panels colour flake grey, 10 A 0336% gloss, back colour black, 00 E 53 10% gloss

All grilles shall be finished black 00 E 53 10% gloss

Colours in accordance with BS4800

PackagingBasic units shall be palletised and shrink wrapped in suitablequantities according to size. Adequate protection shall beprovided to coil fins, connections and if fitted, controls. Casedunits shall be packed in purpose made cartons. TheCustomer shall be responsible for off-loading, providingadequate protection and secure storage.

AccessoriesIf specified, any of the accessories listed in the manufacturerscatalogue shall be supplied.

Model HC

31

Construction

HandlingBasic units are normally palletised and shrink wrapped insuitable quantities, according to size, for ease of handling.Cased units are individually cartoned and palletised. A fork-liftor similar lifting device is therefore desirable. Alternatively,units can be carefully be off-load by hand. This is a two manjob and it is important that the units and in particular, their coilconnections are not knocked or dropped under anycircumstances.

StorageUnits should be stored under clean, dry conditions. Packingshould not be removed until units are required for installation,unless damage in transit is suspected. Note – buyer mustexamine units promptly upon receipt and claims for damagedgoods will not be accepted unless at the time of delivery, theconsignment note is endorsed with a note detailing thedamage and countersigned by the carrier.

Each unit is marked to show the model, figure number andserial number and any reference given on the order for siteidentification. This information also appears on theconsignment note.

PreparationMake provision for proper fixings. The structure to which aunit is to be fixed must be fit for purpose and capable ofaccepting suitable fixings, such as plugs and screws forvertical models and rawl bolts or drop rods for horizontalunits.

It is essential to provide adequate access for maintenance.Any panels used to conceal vertical basic units or suspendedceiling tiles used to conceal horizontal basic units must beremovable with sufficient clearance to allow internalcomponents to be removed.

InstallationSeries ‘F’ Fan Coil Units are designed for ease of installation.The access panel, fans/motor platform and filter can beremoved from the unit, to facilitate installation. Horizontalmodels must be suspended from the ceiling or underside ofthe floor slab. Vertical models must be fixed back to a wall orother vertical structure.

DuctworkAny ductwork connected to units must be properly supportedand not suspended from the unit. Flexible connections arerecommeded between the unit and the ductwork system.

PipeworkAll pipework being connected to coils must be properlysupported and not suspended from the unit connections.

Electrical ConnectionsEach unit is suitable for 230/240 volts, single phase, 50 Hertzelectrical supply. The standard auto-transformer provides anisolated 24 volt A.C. (30VA) supply for any controls suppliedor controls by others. Wiring diagrams are supplied for anyfan and/or thermal controls provided by Dunham-Bush.

For electric heating, ensure the supply cables are sized andfused to suit the restive load.

32

Typical wiring diagrams

33

MODEL HB TYPICAL APPLICATION IN CEILING VOID

Typical applications

34

MO

DE

LV

BF

TY

PIC

AL

AP

PLIC

AT

ION

UN

DE

R S

ILL

35

Prices and Conditions of Sale

PricesDunham-Bush do not issue price lists but will be pleased tosupply a written quotation upon request.

Standard conditions of saleThe standard conditions of sale appear on all quotation andacknowledgement of order forms, additional copies areavailable upon request.

Supply

Availability

Series ‘F’ Fan Coil Units are supplied direct from ourmanufacturing plant. Delivery varies with demand and shouldtherefore be checked at the ordering stage.

PackagingSeries ‘F’ Fan Coil Units are normally packed on pallets andshrink wrapped to provide proper protection.

Cased units are individually cartoned to provide additionalprotection to the finished casings.

OrderingTo ensure Series ‘F’ Fan Coil Units are supplied as specified,a simple alphanumeric code is used for order entry andmanufacture. Letters and numbers in this catalogue are usedto identify the units and accessories. The combination ofthese generates the Fan Coil Unit description code. Thefollowing notes provide guidance when completing the codesfor each model. They apply to all models except wherestated.

a) Code position 4, handing of coil connections, code L and R, please refer to model drawings.

b) Code position 7, fan speeds codes 1 to 7, low, medium and high speed combinations refer to standard performance table air volume flow rates. Model HB, medium speed against 25Pa external resistance. Models VBB and VBF, medium speed against 12Pa external resistance. For other conditions, insert Q and advise details.

c) Code position 8, code R. This wall mounting on/off and speed change switch combines with thermal controls code B - remote detector, code C - remote set-point adjuster or code D - remote detector and set-point adjuster, to form a single item.

d) Code position 8, codes L, M, P, R, T, W, X, Y, and Z which include on/off switch, cannot be used to electric heating.

e) Code position 8, only codes P and R can be master and slave, codes M and S.

f) Code position 9, code F free issue controls. Please provide a full list of all items with manufacturers part numbers and a wiring diagram detailing how the controls are to be connected. Provide details of any interface between the controls and the fan motor. See page 32 for typical wiring diagrams. Page 18 lists suggested kv values for 4 port valves. Series F coils have 15 mm O.D. copper connections, at 40mm centres. The minimum distance between cooling and heating coil connections on dual purpose coils is 55mm.

g) Code position 9, codes M and S cannot be used with electric heating.

h) Code positions 10, 10S, 11 and 11S, model HB only. Please refer to drawings on pages 26 to 28 for availability of spigot positions and sizes. Where a spigot is not required, insert code 0. Where a spigot position is not available on the drawing, insert code N.

j) If code position 10 or 11 is R, (rectangular flange), insertN in each spigot position.

k) List any remote items required separately.

36

F H B

SERIES ‘F’ MODEL HB FAN COIL UNIT DESCRIPTION CODE

Code Component Component Code Definition

Posn.

1 Series ‘F’ - fan coil unit

2 Model HB - horizontal basic

3 Figure Number 2, 3, 4, 5, 6 or 7 - unit size

4 Coil connections L - left hand, R - right hand

5 Cooling coil 3 - dual purpose, 4 - 4 rows

X - direct expansion, Q - special

6 Heating coil W - dual purpose, E - electric, N - none, Q - special

7 Fan speeds 1 - LOW, 2 - MED, 3 - HIGH, 4 - LOW/MED, 5 - LOW/HIGH,

6 - MED/HIGH, 7 - LOW/MED/HIGH, Q - SPECIAL

8 Fan control switches L - remote on/off, M - remote on/off and high/low, N - no switches,

P - remote on/off, high/med/low,

R - remote on/off and high/med/low (see note c),

S - high/med and med/low fitted to electrical connections box,

T - high/med and med/low fitted to electrical connections box and remote on/off

8 Fan Control A - stand alone, M - master, S - slave, N - no controls (see note e)

9 Thermal control A - fitted controller with set-point adjustment, fitted detector

B - fitted controller with set-point adjustment, remote detector

C - fitted controller, fitted detector, remote set-point adjustment

D - fitted controller, remote set-point adjustment and detector

F - free issue controls, supplied by customer (see note f)

N - no controls, Q - special controls

9 Thermal control A - stand alone, M - master, S - slave, N - no controls (see note g)

10 Inlet R - rectangular flange, S - circular spigots, Q - special

10S Spigot position 1

Spigot position 210 - 100∅ spigot, 15 - 150∅ , 20 - 200∅ , 25 - 250∅ ,

Spigot position 30 - spigot not required, N - position not available (see note h)

Spigot position 4

Spigot position 5

11 Outlet R - rectangular flange, S - circular spigots, Q - special

11S Spigot position 1

Spigot position 2

Spigot position 310 - 100∅ spigot, 15 - 150∅ , 20 - 200∅ , 25 - 250∅ ,

Spigot position 40 - spigot not required, N - position not available (see note h)

Spigot position 5

Spigot position 6

Spigot position 7

12 Acoustic treatment Y - yes, N - none, Q - special

13 Condensate pump F - fitted, N - none, Q - special

Q Special features Q - special features, provide full details, N - none

Code Position MODEL HB FAN COIL UNIT DESCRIPTION CODE

1 2 3 4 5 6 7 8 9 10 10S 11 11S 12 13 Q

1 2 3 4 5 1 2 3 4 5 6 7

37

SERIES ‘F’ MODEL VBB AND VBF FAN COIL UNIT DESCRIPTION CODE


Posn.


2 Model VBB - Vertical basic bottom inlet. VBF - Vertical basic front inlet

3 Figure Number 2, 3, 4, 5, 6 or 7 - unit size








P - remote on/off, high/med/low.












10 Inlet (model VBB only) B - inlet box, N - none, Q - special




Code Position MODEL VBB AND VBF FAN COIL UNIT DESCRIPTION CODE

F V B

1 2 3 4 5 6 7 8 9 10 11 12 Q

38

F V C

SERIES ‘F’ MODEL VC FAN COIL UNIT DESCRIPTION CODE


Posn.


2 Model VC - vertical cased

3 Figure Number 2, 3, or 4 - unit size












U - fitted high/low switch below hinged outlet grille,

V - fitted high/med and med/low switches below hinged outlet grille,

W - fitted on/off switch below hinged outlet grille,

X - fitted on/off and high/low switches below hinged outlet grille

Y - fitted on/off, high/med and med/low switches below hinged outlet grille,

Z - fitted on/off switch below hinged outlet grille. High/med and med/low

switches fitted to electrical connections box

8 Fan Control A - stand alone, M - master, S - slave, N - no switches (see note e)






G - fitted controller, set-point adjustment below hinged outlet grille, fitted

return air detector

H - fitted controller, set-point adjustment below hinged outlet grille,

remote air detector



10 Inlet G - inlet grille box, L - legs, N - none, Q - special



13 Hinged outlet grille S - standard fixing, T - tamperproof fixing


Code Position MODEL VC FAN COIL UNIT DESCRIPTION CODE

1 2 3 4 5 6 7 8 9 10 11 12 13 Q

39

SERIES ‘F’ MODEL HC FAN COIL UNIT DESCRIPTION CODE


Posn.


2 Model HC - horizontal cased

3 Figure Number 2, 3 or 4 - size/output









R - remote on/off and high/med/low (see note 3),












11 Hinged inlet grille S - standard fixing, T - tamperproof fixing


Code Position MODEL HC FAN COIL UNIT DESCRIPTION CODE

1 2 3 4 5 6 7 8 9 10 11 Q

F H C

QQuality

Dunham-Bush operates a quality control system and is aregistered firm of Associated CapabilityBS EN ISO 9001 : 2000.Whatever the product, wherever its eventual destination,Dunham-Bush design and manufacturing policy hasalways been firmly based on technical quality.

Product supportIn the United Kingdom and Ireland, Dunham Bush have anetwork of sales agents and representatives, situated atstrategic locations, to provide local support in pricing andselection. Further technical and application support isavailable at Dunham Bush head office factory in Havant

Other Dunham-Bush Products:Series AM fan convectorsSeries BM fan convectorsSeries CM fan convectorsSeries L fan convectors

Sentry air curtains

Evolution Radiant PanelsEvo-Lite radiant panelsDunham Strip radiant panels

Panther fan coil unitsCougar fan coil unitsLeopard fan coil unitsLynx fan coil units

Voidpak air handling unitsECS air handling units

Finvector perimeter heating systemTrench Finvector heatingSeries UH unit heatersWarmSafe LST radiators

Systema gas fired productsThermocold packaged chillers

Manufacturer reserves the right tochange any product specificationwithout notice.

Dunham-Bush Ltd.Downley Road,

Havant,Hants, PO9 2JD.

Tel: 023 9247 7700 Fax: 023 9245 0396

email: [email protected]

PDS-1000-F-0087-13September 2002

Documents

Series F Fan Coil Units - dbsaltd.co.uk Literature/FCU - Series … · Series ‘F’ Fan Coil Units and guidance on selection, application, use and supply. Each standard unit consists