ECE IOM Manuale utente

Contents

1. Checks at Design Stage

2. Checks at Order Stage

3. Delivery

4. Installation.

5. Commissioning.

6. Maintenance

7. Fault Finding

This manual contains advice for installers and users.

General information about the range, construction and

selection of ECE air handling/conditioning equipment can be

obtained from the various sales publications, or by telephone.

Certified individual unit data concerning dimensions, weights,

component specification and performance, is issued with the

order acknowledgement for each unit.

Due to our policy of continuous improvement the information

contained within this manual may be altered from time to time

without prior notice.

1. Checks at Design Stage

Acceptable

Good

Very Good

Best

D = Fan inlet eye diameter

3 to 5D

Acceptable

min

0.75H

x W

A.S.

SCTV

H x W

Good

x W

H x W

A.S.

SCTV

Poor

Acceptable

0.5H

H x W

L C T V

Poor

Very

Poor

Acceptable

A.S.

SCTV

LCTV

Very

Good

A.S.

SCTV

A.S.

SCTV

Min 0.75H

Min 0.75W

Good

A.S.

SCTV

A.S.

SCTV

1.1. Air Inlets and Discharges

Whether ducted, or part of the Air Handling Unit, inlet and discharge connections to atmosphere such as

Louvres, cowls, spigots etc. should be located and dimensioned so that flow restriction, short circulating,

recirculation of vitiated air, pick up of contaminated air or nuisance discharge of exhaust air do not occur.

Ducted intakes and discharges to units should be designed and constructed to ensure that flow restriction,

turbulence, pre rotation, jetting, uneven velocity profile and surface or object excitation do not occur.

Poor intake design causes uneven velocity profile across unit components resulting in moisture carryover

hence flooding, design supply air conditions not being achieved, electric heater elements overheating,

DX refrigerant cooling coils freezing and secondary generation of noise and vibration etc.

Poor discharge design causes reduction in fan pressure and volume, also turbulence generating secondary

noise and vibration, which may reduce impeller, bearing, vibration isolator and flexible connection life.

Design supply conditions may not be achieved. Electric elements may overheat. DX coils may freeze.

Very Poor

A.S. SCTV = Aerofoil Section Short Cord Turning Vane 50mm ctrs.

LCTV = Long Cord Turning Vanes to HEVAC - CIBSE - ASHRAE Standards

L<3D

0.5H

H x W

LCTV

A.S.

SCTV

A.S.

SCTV

A.S.

SCTV

A.S.

SCTV

<30º

1.2. Acoustics - Vibration

Ensure space exists for incorporating attenuation of noise to atmosphere from outside air inlet and exhaust

air discharge and on room side supply and extract ducts.

Consider noise from casing radiation, flanking and breakout.

Consider primary and secondary vibration isolation including service connections.

1.3. Services - Connections

Ensure space with clearance exists for access to, routing of, connection to and expansion and contraction

of water, steam, refrigerant, gas, oil supplies and line fittings. Combustion air supply, flue gas exhaust. venting

of air, Isolating and draining of plant, trapping and returning steam, condensate, trapping and draining of

condense from cooling coils, humidifiers and heat recovery devices to open tundish, blowing down waste

to open tundish, pumping down and storing of refrigerant, power - control wiring, and components.

1.4. Commissioning & Fault finding

Ensure plant is designed to allow installation of and access to calibration and adjustment of measuring and

modulating devices for:-

Air flow direction and rate.

Resistance to airflow.

Air on and off dry bulb, wet bulb and humidity.

Ensure space exists in and around the plant for access to, inspection of, measuring of and work on items

including:-

Belt tensioning of external motors.

Jacking and levelling of steel spring vibration isolators.

Clear sight of identifying labels measuring and recording devices.

VCD blades, links and actuators, humidifier generators, sparge pipes,

coil and eliminator surfaces and drain pans, electric heaters, fan and drives.

Fan speed and direction of rotation.

Belt tension.

Motor speed and direction of rotation.

Motor current, resistance, continuity.

Motor nameplate.

Terminal wiring diagrams.

Wiring.

1.5. Maintenance Repair and Renewal

For units with one piece coils ensure space exists of at least one unit width plus 150mm on the withdrawal

side of each plant item. for units with split coils ensure at least half the width of unit or 700 mm whichever is

greater.

Adjacent units can share the common space between them for access and withdrawal.

Ensure room exists for safe working platforms where units are mounted at high level.

Ensure provision exists for steps, ladders etc. where units are over 1750 high or mounted on platforms which

elevate the unit height and make access difficult.

1.6. General

Any or all of the following and their effect on the plant should be considered and the appropriate action

taken:-

Conditions within surrounding areas.

External temperature and humidity.

Direct solar radiation.

Wind speed and direction.

Driven rain.

Driven snow.

Driven sand.

Sea spray, mist, fog, moisture in suspension.

Saline atmosphere.

1. Checks at Design Stage

Icing

Unit surface temperatures and surrounding air dew point.

Gases which form acids in solution in water Such as SO2.

Flammability.

Explosion risk.

Toxicity.

Bacteria.

Fungi

Algae

Medium flow direction and rate.

Resistance to medium flow.

Medium on and off pressure and temperature.

2. Checks at Order Stage

GENERAL INFORMATION

DATE.

TIME .

CONTACT(S).

COMPANY.

ADDRESS.

PHONE NO.

FAX NO.

________________________________________

CONTRACT INFORMATION

CUSTOMER REF. No.

CONFIDENTIAL? JOB NAME.

DELIVERY AREA.

SPECIFICATION PAGES.

OTHER STANDARDS REFERRED TO IN SPECI.

DRAWING NO's.

SCHEDULE REFERENCE.

OTHER CUSTOMER DOCUMENTS.

________________________________________

UNIT INFORMATION

ITEM No.

AREA REF.

No. OFF.

SUPPLY/EXTRACT.

INT/EXT/ROOF/FITTED WORKS OR SITE.

PART/HORIZ.

PART/VERT.

CONFIGURATION/SKETCH .

25mm - 50mm PANELS.

________________________________________

EXTERNAL SYSTEM RESISTANCE.

DEPRESSION AT UNIT INLET.

POSITIVE AT FAN DISCHARGE.

PRESSURISED SEP/MIX BOX/PLENUM.

DIFFUSION/BLANKING SCREEN?

INLET POSITION.

DISCHARGE POSITION.

ONE-TWO-DUPLEX-TRIPLEX.

DIDW - SISW.

FC/BC.

BD/DD.

RAFT/RIGID.

I.G V. + CONTROLLER.

NRD's ONE. TWO.

GUARDS:-

INLET/EYES/DISCH/DRIVE.

________________________________________

DRIVES

MOTORS INT/EXT.

DUTY/IDLING.

PULLIES/BELTS/IN/OUT/AIR STREAM.

1 SPEED/2 SPEED/VARIABLE SPEED.

SPD CHANGE INTERLOCK WITH EAHB.

POLE CHANGE/DUAL WOUND.

ELECTROMAGNETIC CLUTCH (TASC)

SWITCHED RELUCTANCE.

INVERTER.

DOL/SD.

ST' D/FLF!

ELEC SUPPLY.

FLOOR GRID.

LIFTING BEAMS.

________________________________________

FILTERS

PRESTl.STll.

AFTER ST.l .11.111.

TO EXTRACT HEAT RECOVERY.

GREASE TO KITCHEN EXTRACT.

TYPE.

EFFICIENCY BY WEIGHT.

EFFICIENCY SPOT DUST.

RETENTIVITY (ACT.CARBON).

BS.ASHRAE.EUROVENT.

WITHDRAWAL- SIDE/US/DS/T/B.

FITTED MANOMETER(S).

MAGNAHELIC(S).

RADIANT HEAT FROM EAHB.

________________________________________

INLETS AND DISCHARGES.

LOUVRES/FAI/DTA/STD/ACOUSTIC.

ELMTRS + DRAIN HIGH VELOCITY

FAN DISCHARGE 45

SPIGOT + MESH.

________________________________________

SEPARATlON/MlXlNG BOXES/VCD'S

INT/EXT DAMPERS.

FAI/RC/DTA POSITION.

OPP/PAR/MAN/MOTOR/BELIMO.

VOLUME CONTROL

100%/ZONE/F & BP/LOCATION.

INT/EXT.

OPP/PAR/MAN/MOTOR .

CONSTRUCTION GSS.

________________________________________

HEATING/COOLING

HEAT RECOVERY

HEAT REJECTION

DEHUMIDIFYING

HUMIDIFYING

POSITION/TYPE.

DRAW THROUGH/BLOW THROUGH.

VOLUME m

/s.

AIR ON CWB/DB/kg/kg.

AIR OFF CWB/DB/kg/kg.

SWEATING INS FRAME.

DX + CONST OFF = FREEZE.

HUMID POSN ADJ SURFACES - WETTING.

CLEAR DISTANCE DOWNSTREAM.

GAS HEATER.CONDENSATION - BYPASS.

COMBST'N AIR INLET-FLUE OUTUT. POSN.

LOAD/EFF/OUTPUT.

STEPS/INTERLACED/FACE .

MEDIUM TYPE.

FLOW/RETURN ºC.

EVAP. TEMP ºC.

PRESSURE - BAR/Kpa.

GLYCOL %.

OUTSIDE AMBIENT,

COND.TEMP C.

ELEC SUPPLY.

EAHB MIN AIR FLOW SPEED.

EAHB BALANCED ACROSS 3PH SUPPLY.

INTERLOCK WITH VAR. SP. FAN.

CONSTRUCTION.

PLATES/TUBES/FINS.

ELEMENTS/BURNER/INFILL.

FINISH:- SELF/VINYL/ET.

FREE COOLING & MECHANICAL TOP UP.

AIR ENTERING AT 90º TO COIL FACE.

FACE VELOCITY PROFILE.

CONDENSATE DRAIN PROVISION - HEIGHT

________________________________________

PLENUMS

LOCATION/FUNCTION .

DIFFUSER/SPACER/ACCESS.

90º/HORZ/VERT.

TO/FROM:- ABOVE/BELOW/LHS/RHS.

HINGED/LIFT OFF.

TOOL OP/HANDLES/LOCK TO ONE HANDLE.

VIEWPORT(S).

BULKHEAD LIGHT(S) EXT SWITCH.

WIRING BY OTHERS.

FLOOR GRIDS.

________________________________________

INLET/DISCHARGES

FROM:- ABOVE/BELOW/LHS/RHS/FACE.

LOUVRE/SPIGOT.

STACK & COWL.

90º + SCTV.

GRlLLE/SD/DD/NV/OBD's.

CONSTRUCTION.

FINISH.

________________________________________

VIBRATION ISOLATORS

INT/EXT.

EFF REQUIRED %.

RUBBER IN SHEAR/STEEL SPRING.

JACKING.

SELF LEVELLING.

FIXED/LOOSE.

________________________________________

FLEXIBLES

ISOLATING/FAN RAFT/FAN SECTION.

COMPUTE UNIT/PIPE CONNECTIONS.

ATTENUATING.

FLAME RESISTANT.

CONSTRUCTION.

FINISH.

________________________________________

ATTENUATORS

EXTRACT/ATMOS/ROOM SIDE/ZONE.

SUPPLY/ATMOS/ROOM SIDE/ZONE.

TO ACHIEVE NR IN/AT.

UNIT/DUCT MOUNTED.

STRAIGHT /90 + SCTV.

VOLUME m

/s.

INLET/OUTLET PLENUM/LENGTH.

FROM/TO/ABOVE/BELOW/LHS/RHS/FACE.

FINISH.

BREAKOUT.

FLANKING .

ANCILLARIES

50 x 100 x 50 FULL PERIMETER BASE.

6MM ANODISED ALUMINIUM.

3MM GSS.

INTEGRAL LUGS.

SUPPORT LEGS.

SUPPORT STEELWORK.

SlDE/CENTRAL/SERVlCES CORRIDORS.

PIPEWORK.

CONTROLS.

WIRING.

ACCESS PLATFORMS.

________________________________________

CONSTRUCTION

FRAME/GSS/ALI/PLASTISOL.

OUTER PANELS/GSS/PLASTISOL.

INNER SKIN/GSS/PLASTISOL/ST. ST.

INSULATlON/25mm/50mm/65kg/m

________________________________________

FINISH

LOCATION EXT/INT.

ANODISED ALI.

PLASTISOL.

GSS SELF.

________________________________________

PROTECTION

POLYSTYRENE CORNERS

CLING FILM WRAF'

POLYSTYRENE BOARDS

REWRAPPED AFTER ASSEMBLY.

________________________________________

SITE COSTS

SITE SUPERVISION WORK REQUIRED.

SITE ASSEMBLY REQUIRED

SAFETY CHECKS l.E. GAS HEATERS

GUARANTEE CHECKS

l.E. ASSEMBLY STANDARDS. WEATHERING

AND SITE AIR LEAKAGE STANDARDS.

________________________________________

PROBLEMS

TRANSPORT:- LOADED VEHICLE OBSTACLE

CLEARANCE/ROUTE LOAD BEARING.

ROAD CLOSURE/STAT PERMISSIONS

ONLOADING/OFFLOADING. CRANE/FORK

LIFT-

WEIGHT/CAPACITY.

MOVING ON SITE:- ROUTE/LOADS/METHOD/

BUILDING LOAD BEARING.

MAX SIZE/WEIGHT PER PIECE FOR ACCESS

DRY STORAGE BEFORE ERECTION

BASES:- LEVEL/LOAD BRG/RELEVELLING

DEV'S

BOLTING ADJACENT SECTIONS ON SITE

l.E. HEATING & COOLING COILS.

ACCESS/MAINTENANCE/WITHDRAWAL PLANT.

SUN/WIND/RAIN/SNOW.

SALINE/ICING.

DUST/POWDER/GRIT/SOOT/SMOKE/SAND.

TALL UNITS ON PLINTHS SIDE WALKWAY?

ARE TOP ACCESS DOOR CATCHES IN

REACH?

CONTAINMENT & DRAINAGE OF LEAKS.

SLOPING, DIFFERENTIAL TRAPPED

CONDENSE DRAINS, TO OPEN TUNDISH.

MISWIRING MOTORS COMPETENT

ELECTRICIAN.

________________________________________

TIME SCALE FOR ACTION

JOB POSN/CUST POSN/ECE POSN

PRELIM. DSGN?/FINAL DSGN?/BUDGET?

QUOTE REQUIRED BY

IF ECE SPECIFIED. WHEN?

OUT TO TENDER BY.

RETURN DATE

ORDER TO ECE CUSTOMER BY

IF ECE SELECTED. WHEN?

ORDERS TO ECE BY

DELIVERY DATE(S) REQUIRED

GUARANTEE PERIOD REQUIRED FROM.

FOB/CIF/PACKED FOR SHIPPING

CONDITIONS OF TRADING

CREDIT RATING IF APPLICABLE.

3.1. Receipt & Unpacking

Units are designed and manufactured according to ISO 9001

As part of our quality control system each unit undergoes a full pre-delivery inspection before loading.

Units are then fitted with corner protection and wrapped in polythene to prevent ingress of foreign bodies

or water during transportation.

All units are fitted with a full perimeter bases to facilitate lifting, moving and installation.

Units should be inspected and any external damage or short delivery reported to ECE. before unloading .

We cannot accept responsibility for damage sustained during unloading from the delivery vehicle or on site.

All claims for internal defects or short delivery must be reported immediately and confirmed in writing.

Units must be off loaded, lifted and lowered using long lifting straps and timber blocks or using an 'H' Frame

with short lifting straps and timber blocks or a fork lift with extended forks.

Units must be moved across site using a fork lift with extended forks, multiple solid rollers or skates.

Final lowering and side shifting to bring parallel faces together should be by toe jacks with timber blocks

Internal joining bolts should never be used to pull modules together.

Modules should never be rolled over to move across site

Guidance notes for unloading and handling are given in the following pages.

Before commissioning all packaging materials must be removed from the units and cleared from the area.

3. Delivery

Unit wrapped ready for dispatch

3. Delivery

3.2 Lifting

3.2.1. Cra ne

lo ng lifting stra p s

150m m min. wid th

3.2.2 Cra ne

'H' fra m e

sh o rt liftin g st ra p s

150m m min. wid th

3.2.3 Fork lift

3. Delivery

3.3. Moving

3.3.1. Rollers

3.3.2 Toe Jacks

3.3.3 Skates

4. Installation

4.1. General

Electrical wiring and controls, water, steam, gas and refrigerant piping, line fittings and controls should be

installed In accordance with appropriate governing institute standard practice (I.E.E., C.l.B.S.E. etc.) and

together with the electricity supply, water supply and drains should conform to the appropriate authority

and all statutory regulations.

Units with drains should be mounted at a level which allows installation of cleanable drain traps at each

connecting point then installation of drain pipework falling to an open tundish.

Space should exist for the application of sealant - jointing rubbers. Tightening of internal fixings. Internal

installation, attachment or insertion of isolating, indicating, recording, modulating, activating, devices, also

making and tightening of fixings at connections to air Inlet and discharge ducts.

4.2. Bases and foundations

All units must be installed on a permanent prepared base which must be firm, level and structurally rigid.

Units may be mounted on suitable steels or purpose built C.l. frames supported from the main roof structure

providing this is capable of supporting the weight - see Checks at Design Stage.

Note:-

The use of TICO material to dampen vibration / noise is not recommended as it will cause uneven deflection

due to variations in point loading within units. This will cause vertical joints to go 'out of parallel' causing

leakage at joints.

4. Installation

4.2. Bases and foundations (cont'd)

When foundations are uneven units will 'lozenge' if the installer attempts to use the joining bolts to pull non

parallel faces together causing air leakage at joins, access doors will jam and not close after opening and

duct connections will not be 'parallel' and will leak.

When foundations are level and perfectly flat units will be perfect cubes and will fit together squarely with

good air seals, access doors will open and close correctly and duct connection are air tight.

Do not use joining bolts to pull units together in elevation or in plan.

Level Base -

units perfect cubes

Elevation

Uneven Base - units 'lozenged'

Plan

Thin mastic seal

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