BENSON HEATING CVO 70 Guía de inicio rápido

Installation, use and maintenance instructions

BENSON

HEATING

Light oil warm air heater

Machinery Directive

EEC 89/392

EEC 91/368

EEC 93/44

EEC 93/68

MODEL PRODUCT CODE

CVO 55 3NDGBCD015

CVO 70 3NDGBCD020

CVO 100 3NDGBCD030

Fuel Light oil

Country of destination Great Britain

Serial number and year of construction See machine ID plate

CVO Series

Dear Customer,

Thank you for requesting a Benson Heating warm air heater from your installer. In doing so you have selected one of the

best products on the market, one which will provide you with all the undisputed advantages of greater indoor comfort. This

manual provides information and advice for its proper installation, use and maintenance. To ensure long-lasting

performance we recommend that you read the entire manual carefully. Store this manual in a safe place for future

consultation.

WARNING

Always make sure the unit is accompanied by this manual so that it can be consulted by the user, installer and any

specialised Assistance Service personnel.

Before reading this manual please note that the warm air heater warranty is only valid where the unit has been installed by

QUALIFIED PERSONNEL ONLY.

This unit has been designed for indoor heating purposes only. IT IS FORBIDDEN TO USE THE UNIT FOR ANY

PURPOSES OTHER THAN THAT FOR WHICH IT HAS BEEN SPECIFICALLY DESIGNED.

Fumes and/or odours may be emitted during the first few hours of operation owing to evaporation of the liquid which

protects the heat exchanger; this is quite normal and will cease after a short time.

The room in which the unit is installed should be properly ventilated.

USEFUL ADVICE:

Installation and maintenance must be carried out by personnel qualified as per Italian Law n° 46 of 5th march 1990 and in

compliance with UNI-CIG 7129 and 7131, amendments included.

Your safety starts here:

Improper installation can cause damage to persons, animals and objects. The manufacturer cannot be held liable for any

such damages.

After removing the unit from its packaging make sure it has not been damaged during transport and that no parts are

missing; if in doubt do not use the unit and contact your dealer.

Dispose of packaging (plastic bags, expanded polystyrene etc.) properly. Keep such packaging away from children as it is

dangerous.

Do not install the unit near inflammable materials.

Fix and protect fuel feed lines properly.

Fuel feed lines and electrical power lines must not cause obstruction or cause personnel to trip up.

The unit must be serviced at least once a year by qualified personnel and in any case by a specialised Assistance Service

firm.

If the installation area is poorly lit use additional lighting when carrying out installation/maintenance tasks.

Never let children or incapable persons use the unit unless under adult supervision.

Do not install the unit in areas with an “aggressive” atmosphere.

Do not get the unit wet, install it in a damp area or where it may be splashed by water or other liquids.

Never place any objects on top of the unit.

Do not touch the chimney flue connector duct during routine use as this can become extremely hot.

Do not insert anything in the cover grating and/or fume outlet duct.

In the event of prolonged absence close the main fuel cut-off valve.

DO NOT CARRY OUT ANY WORK ON THE UNIT YOURSELF

As with all Benson Heater units, use original spare parts only.

The manufacturer cannot be held liable for any damages caused by improper, erroneous or unreasonable use of the unit or

the use of non-original parts/materials.

The manufacturer cannot be held liable for any errors in the translation of this manual which result in erroneous

interpretation.

The manufacturer cannot be held liable for any inobservance of instructions contained in this manual or the consequences

of doing any work not specifically described therein.

Before carrying out any cleaning or maintenance work:

- close all fuel valves/taps.

- disconnect the unit from the electrical power supply via the main unit switch and/or any power line breakers.

- make sure the heat exchanger has cooled so that there is no risk of being burnt. Do not use adapters, multiple sockets

and/or extension leads to connect up to the mains power supply. To connect to the mains install an omnipolar switch as per

the safety standards in force.

Use of any electrical device involves observance of the following essential rules:

 Do not touch the unit with wet/damp body parts or if barefoot.

 Do not tug power leads.

Do not leave the unit exposed to atmospheric agents.

1. INDEX

Chapter Subject Page

1. CONTENTS 3

2. DESCRIPTION AND CHARACTERISTICS 4

2.1 Description 4

2.2 Technical characteristics 5

2.3 Overall dimensions 5

3. INSTALLATION INSTRUCTIONS 6

3.1 Handling and transport 6

3.1.1 Handling with vehicles/other mechanical devices 6

3.1.2 Handling manually 6

3.2 Removing the packaging 6

3.3 Positioning the unit 7

3.4 Connections 7

3.4.1 Chimney flue connections 7

3.4.2 Fuel line connections 8

3.4.3 Electrical connections 11

3.4.4 Air delivery connections 12

4 ADJUSTING THE UNIT 13

5 CONTROLS 13

6 INSTRUCTIONS FOR USE 13

6.1 Preliminary tasks 13

6.2 Preventive checks 13

6.3 First-time start up 14

7 MAINTENANCE 15

8 ASSISTANCE 16

9 TROUBLESHOOTING 17

2. DESCRIPTION AND CHARACTERISTICS

2.1 Description

The CVO Series warm air heater manufactured by BENSON HEATING has been designed to meet a wide range

of heating needs. It is ideal for houses, apartments, offices, shops, restaurants, pubs, laboratories, workshops,

hospital rooms etc. and can diffuse warm air either directly or distribute it via a system of ducts.

The CVO Series warm air heater manufactured by BENSON HEATING uses heat energy provided by internal

combustion and a heat exchanger. A fan generates an air current which flows over the exchanger directly, this

making the use of intermediate fluids unnecessary. This system significantly reduces both initial outlay and

running costs, thus making the unit suitable even in circumstances where it is used only intermittently or

occasionally.

During the summer the unit also provides efficient ventilation.

THE UNIT MUST NOT BE USED FOR PURPOSES OTHER THAN THAT FOR WHICH IT HAS BEEN

DESIGNED.

1. Min-max commutator 8. Rear panel

2. FAN-LIMIT two-way thermostat 9. Tube through-slot

3. Chimney flue inlet 10. Motor

4. Fume ducts 11. Fan

5. Flame control spy-hole 12. Air filter

6. Burner inlet 13. Front panel

7. Combustion chamber 14. Burner

2.2 Technical characteristics

CVO 55 CVO 70 CVO 100

Heating capacity input Kw 18.49 23.72 34.13

Btu/h 63.104 80.920 116.403

Efficiency % 88.0 88.2 88.5

Heating capacity output Kw 16.3 20.9 30.2

Btu/h 55.600 71.300 103.000

Air flow at +15°C m3/s 0.24 0.31 0.44

cfm 508 647 940

Thermal head °C 55 55 55

Available low speed Pa 0 0 0

Static medium speed Pa 50 50 70

Pressure high speed Pa 80 80 150

35 Second Gas Oil l/h 1.75 2.24 3.23

Consumption gal/h 0.39 0.50 0.72

28 Second Kerosene l/h 1.81 2.33 3.35

Consumption gal/h 0.40 0.52 0.74

Electricity Supply V/50Hz 230 230 230

Electrical fan power w 150 150 420

Nett Weight(1) Kg 82 97 116

(1) Data refers to unit without burner

2.3 Overall dimensions

MOD. A B H C D ∅

∅∅

∅

CVO 55 350 860 860 210 422 100

CVO 70 390 960 960 250 502 120

CVO 100 430 1.030 1.030 290 592 130

3. INSTALLATION INSTRUCTIONS

3.1 Handling and transport

The CVO Series warm air heater manufactured by BENSON HEATING is shipped on a wooden base and is

protected by plastic and cardboard packaging. Any accessories are shipped separately. Handling and transport

must be carried out with the unit in a vertical position. To minimise risk of damage wait until the unit reaches

the installation area before removing the packaging.

3.1.1 Handling with vehicles/other mechanical devices

The CVO Series warm air heater manufactured by BENSON HEATING has been designed to be handled with

the aid of mechanical lifting devices (fork-lift truck, bridge crane with lift harness etc.). It is essential that the pick-

up points indicated in fig. 3.1.1.1 be used.

Should it be necessary to stack the units observe the stacking index indicated on the packaging itself. Make sure

stacks are aligned properly to prevent instability.

WARNING: Personnel should keep a safe distance from the unit during transport, lifting and handling.

Fig. 3.1.1.1 Pick-up points

3.1.2 Handling manually

If handling the unit-plus-packaging set manually, grasp it by its wooden base only. Make sure that the weight of

the unit (as indicated in chapter 2.2) can be lifted and manoeuvred along the route to be taken by available

personnel without difficulty.

3.2 Removing the packaging

To free the unit from the packaging proceed as follows:

remove the strap fixing the unit to the wooden base.

remove the cardboard case by sliding it upwards.

remove the plastic film from the unit cover.

remove the wooden base (not fixed to the unit) by raising the heater a little.

All packaging must be disposed of in compliance with the laws in force.

3.3 Positioning the unit

The unit must be positioned on a flat, dry, stable surface capable of bearing the load indicated in the “Technical

Characteristics”.

The position of the warm air heater must be defined by qualified personnel and should take into account the

following:

it should be adjacent to a chimney flue

connection to the fuel line should be easy

it should be near a power socket

there should be sufficient space around the unit to allow maintenance/checks to be effected (see 3.3.1.)

ventilation must comply with the standards in force.

Fig. 3.3.1 Minimum installation distances

Warning!

To prevent accidental contact with moving parts it is forbidden to run the unit without its guard panels fitted.

These are:

 Rear inspection panel

 Burner cover

3.4 Connections

All connections must be effected by qualified personnel only, in observance of the standards in force. If

necessary, use additional lighting to prevent errors caused by poor visibility in the work area.

3.4.1 Chimney flue connections

A proper burner/heater/chimney flue match provides significant reductions in fuel consumption, makes

combustion more efficient, lowers pollutant emissions provides effective protection against condensation The

chimney flue is thus of primary importance for the system as a whole.

The chimney flue must compulsorily be made of an impermeable material that is resistant to heat and

condensation (Italian law 1083 DM of 7.6.73 – G.U. 203 and UNI-CIG 7129 p. 3116); it must also be smooth,

insulated, be as vertical as possible and sized in accordance with height and power ratings as per legislation in

force. Improperly sized or poorly shaped flues amplify combustion noise, give rise to condensation problems and

interfere with combustion parameters, thus aiding the formation of soot and incrustations.

The CVO Series warm air heater manufactured by BENSON HEATING must be connected to chimney flues

having the following specifications (see fig. 3.4.1.1):

cross-section equal to or greater than flue connector duct

smooth internal surface

maximum horizontal length of 1 m

no tight bends or changes in cross-section

minimum vertical length of 3 m.

Fig. 3.4.1.1 Flue connections

3.4.2 Fuel line connections

Light oil

To effect fuel line connections it is necessary to connect the two flexible burner pump hoses (intake and return)

to a fuel tank according to the instructions given in fig. 3.4.2.2. Proceed as follows:

 remove the burner cover.

 remove the intake and return plugs positioned on the lower part of the burner pump body (see fig. 3.4.2.1).

fit the two fuel flex hoses (supplied) and insert them in the slots designed to receive them from both sides

(see fig. 3.4.2.3).

 connect up the flex hoses to the fuel tank via an 8 – 10 mm copper pipe, inserting a tap and filter on the

intake line near the unit.

replace the burner cover.

Warning: before starting the burner make sure there are no obstructions on the return tube. Any such

obstruction will rupture the pump seal.

Fig. 3.4.2.1 Burner pump

Fig. 3.4.2.2 Light oil connection instructions

∅i = internal tube diameter

L =

max intake tube length

H =

vertical height

H L metres

∅

∅∅

∅i ∅

∅∅

∅i

metres 8 mm 10 mm

0,5 10 20

1 20 40

1,5 40 80

2 60 100

H L metres

∅

∅∅

∅i ∅

∅∅

∅i

metres 8 mm 10 mm

0 35 100

0,5 30 100

1 25 100

1,5 20 90

2 15 70

3 8 30

3,5 6 20

Do not exceed the maximum permitted vacuum of 0.4 bar (30 cm Hg). Once this value is exceeded combustible

gas will escape.

The tubes must be sealed perfectly.

It is recommended that the return tube arrive at the same height as the intake tube.

In this event installation of a foot valve is not necessary.

If, instead, the return tube arrives above the level of the fuel the foot valve becomes indispensable. This latter

solution is less secure in that there is always a possibility that the foot valve may provide an inadequate seal.

Pump priming

Start the pump and wait for it to prime. If shutdown occurs before the fuel arrives wait at least twenty seconds

before repeating.

A filter must be fitted on the fuel feed line

* Automatic shut-off device as per Italian Home Office circular letter n. 73 of 29/7/71

Fig. 3.4.2.3 Tube through-slots.

If a tank is unavailable and you wish to connect a Series SR tank (accessory available on request) observe the

instructions in fig. 3.4.2.4.

fig. 3.4.2.4 Assembly diagram for Series SR light oil tank

Key:

1Cover

2Female return coupling, 3/8”

3Female delivery coupling, 3/8”

* 4 Water drain valve

5Light oil filter

* 6 Shut-off valve

*to be installed by customer

Model Tank A B C Capacity (litres)

CVO 55 SR 10 350 300 860 80

CVO 70 SR 20 390 300 960 100

CVO 100 SR 30 430 320 1.030 130

NB: - It is recommended that shut-off valves be fitted on the fuel couplings to prevent any fuel loss during

burner maintenance.

- Remember that the tank, where positioned adjacent to the rear wall of the heater, will have to be

removed to allow fume ducts to be cleaned.

Make sure that all fuel lines/hoses are properly protected and secured so that they cannot be damaged

by external factors.

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