Reznor Comet+ Manuel utilisateur

FLOOR STANDING WARM AIR HEATER

INSTALLATION / COMMISSIONING / SERVICE /

USER MANUAL

Comet+ (Gas & Oil)

Manual Part No. D301518 Issue 0

Supply of Machinery (Safety) Regulations 2008

Supply of Machinery (Safety) Regulations (A) 2011

Electrical Equipment (Safety) Regulations 2016

Electromagnetic Compatibility Regulations 2016

Gas Appliances (Product Safety and Metrology etc (Amendment etc)

(EU Exit) Regulations 2019)

Please read this document carefully before commencing installation, commissioning and/or servicing.

Leave it with the end user/site agent to be placed in their premises technical ﬁle after installation.

WARNING

Improper installation, adjustment, alteration, service or maintenance can cause property damage, injury or death.

All work must be carried out by appropriately qualiﬁed persons.

The manufacturer does not take any responsibility in the event of non-observance of the regulations concerning the

connection of the apparatus causing a dangerous operation possibly resulting in damage to the apparatus and/or environment

in which the unit is installed.

ErP

2021

ErP Lot 21

Seasonal Efficiency and

NOx compliant

PAGE 2 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0

Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 3

CONTENTS

Contents

Product Introduction

Comet+ Range ................................................4

Health and Safety

General Health and Safety ................................5

Before Using this Appliance ..............................6

Location/Positioning..........................................6

General Requirements.......................................7

Electrical Supply................................................8

General

General.............................................................9

Disposal Instructions .........................................10

Installers Responsibilities ...................................11

Compliance Notices ..........................................11

Warranty ..........................................................12

Technical Data (TD)

Technical data...................................................14

Dimensions.......................................................16

Installation

Pre Installation ..................................................18

Handling...........................................................18

Installation Considerations ................................19

Clearances and Access......................................20

Combustion Air/Ventilation Requirements.........20

Flue System.......................................................20

Gas Installation and Connection........................25

Oil Installation/Connection................................25

Ducted Models .................................................28

Nozzled Models ................................................29

Condensate Drains............................................29

Electrical Installation/Connection.......................29

Controls............................................................31

Commissioning

Commissioning.................................................32

Unit Operation..................................................34

Overheat Protection ..........................................34

Maintenance

To Clean the Heat Exchanger ............................36

Burner Removal ................................................36

Burner Maintenance .........................................36

Heat Exchanger Maintenance............................37

Routine Maintenance........................................37

Fan Assembly....................................................37

Gas/Oil Control Valve Maintenance ...................37

Cleaning of Heater............................................37

Removal and Replacement of

Parts

Multi-Block Gas Valve .......................................38

Fan and Limit Stat.............................................38

Burner Replacement .........................................38

Recommended Tools.........................................38

Spare Parts

Spare Parts........................................................39

Trouble Shooting

Fault ﬁnding .....................................................40

User Instructions

User Instructions ...............................................41

PAGE 4 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0

COMET+ is the latest generation of ﬂoor standing cabinet heaters, combining innovative

design with proven heat exchanger technology to provide a highly efﬁcient, cost effective and

durable range. The heaters are CE and UKCA certiﬁed and compliant with BS EN 17082 for

use in non domestic installations.

The COMET+ range encompasses heating duties from 45kW to 300kW in a number of

variants:-

• Natural gas (G20) ﬁred;

• Natural gas (G20) ﬁred high efﬁciency condensing;

• Propane gas (G31) ﬁred;

• Oil (Class D 35 second gas oil) ﬁred complete with a ﬁre valve and oil ﬁlter supplied as loose

components;

• Kerosene (Class C2 28 second heating oil) ﬁred complete with a ﬁre valve and oil ﬁlter

supplied as loose components;

• Free blowing with rotating long throw discharge nozzles complete with horizontal louvres

(supplied loose);

• Ducted discharge with top outlet suitable for duct connection.

The following options are available upon request:-

• Front ﬂue connection (rear connection as standard)

• External weatherproof casing

• Right hand side grille (left hand side as standard)

• Flat pack format to aid with installation in areas with restricted access.

All models have been designed for internal use only unless speciﬁcally designated for external

use (optional external weatherproof casing).

The type of fuel, the input rate and the electrical supply requirement is shown on the heater

rating plate. Check the rating plate to determine if the heater is appropriate for the intended

installation. It is especially important to check that the fuel type shown on the data

plate corresponds with the fuel intended to be used/available on site. All available

variants are listed in the technical data section following on pages 14 and 15.

This installation manual is shipped with the unit. Verify that the literature is correct for the

model being installed. If the manual is incorrect for the heater, contact the supplier before

beginning installation. The instructions in this manual apply only to the models listed.

This installation manual must be read in conjunction with the burner installation manual

shipped with the unit. Verify that the manual is correct for the burner installed in the heater. If

the manual is incorrect for the burner, contact the supplier before beginning installation.

All heaters are factory tested prior to despatch. Each heater is individual. The relevant data

can be found on the data plate attached to the heater.

Installation should be carried out by a suitably qualiﬁed installer in accordance with these

instructions and the current rules and regulations in force. The installer is responsible for the

safe installation of the heater.

PRODUCT INTRODUCTION

Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 5

General Health and Safety

WARNING

Warning is used when failure

to heed or implement the

instruction(s) can lead to not

only component damage, but

also to a hazardous situation

being created where there is a

risk of personal injury.

CAUTION

Caution is used when failure

to follow or implement the

instruction(s) can lead to

premature failure or damage

to the heater or its component

parts

GAS LEAK EMERGENCY

If you can smell gas from or near the

heater:

• Do not try to light any appliance

• Do not smoke or light matches

• Do not turn electrical switches on or

off

• Open doors and windows, to air the

room

• Close the fuel control to the device

• If you still smell gas turn off the

supply at the meter unless the meter

is in the cellar

• Raise the alarm and evacuate all

personnel to a safe place

• Promptly Call your Gas Emergency

number

Enter your gas emergency number below

• Do not store or use petrol or other

ﬂammable vapours and liquids in the

vicinity of the appliance.

• In case of persistent problems, contact

your distributor.

Improper installation, adjustment,

alteration, service, or maintenance can

cause property damage, injury, or death.

Read the installation, operation, and

maintenance instructions thoroughly before

installing or servicing this equipment.

Do not use this appliance if any part has

been immersed in water. Immediately call

a qualiﬁed service technician to inspect the

appliance and replace any gas control that

has been immersed in water.

Gas-ﬁred appliances are not designed for

use in hazardous atmospheres containing

ﬂammable vapours or combustible dust,

in atmospheres containing chlorinated or

halogenated hydrocarbons or in applications

with airborne silicone substances.

Should overheating occur, or the gas supply

fail to shut off, isolate the manual gas valve

to the appliance before shutting off the

electrical supply.

This appliance is not intended for use by

persons (including children) with reduced

sensory or mental capabilities or lack of

experience and knowledge, unless they

have been given supervision or instruction

concerning use of the appliance by a person

responsible for their safety.

Children should be supervised to ensure

that they do not play with the appliance.

Carry out a risk assessment for the task to

be carried out and ensure the correct use of

any Personal Protective Equipment.

This manual should be kept in a safe place

for future reference.

HEALTH AND SAFETY

PAGE 6 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0

Before using this appliance:

• Carefully read these instructions and

follow the processes explained by the

manufacturer. These instructions are

only valid for appliances designed to

operate in Europe.

• Check that the voltage indicated on

the type plate corresponds to the mains

supply voltage. If the country code and

gas category on the appliance data

label does not match the country of

installation or the country codes and gas

categories as shown in this instruction

manual, it will be necessary to contact

the distributor or manufacturer to

provide the necessary information for

the modiﬁcation of the appliance to

the conditions of use for the country of

installation

• Ensure that the heater has been securely

fastened in its ﬁnal mounting position.

• Installing, commissioning, testing,

programming and maintenance of these

products must only be carried out by

suitably qualiﬁed and trained technicians

and in full compliance with all applicable

regulations and current best practices.

• Check if the appliance as described on

the packaging label is in accordance

with the correct type and model as

speciﬁed on the data plate and complies

with your customer order.

• Check that the temperature ranges

given and those of the location match.

The appliance must be powered with

a voltage corresponding to the value

shown on the rating plate.

• The heater must be installed in

accordance with the rules in force

and local regulations/legislation as

appropriate plus all local building codes.

• Ensure that the burner manual is

available.

• Installers should satisfy themselves that

the gas or oil pipework installation

is carried out in accordance with all

current legislation, Codes of Practice

and recommendations.

Location/Positioning

The oil variants of the heaters

must be installed in accordance

with the current OFTEC regulations

for oil ﬁred products.

Under no circumstances should

any item be placed on or above

any part of the heater, whether it

is being used or not.

All basic criteria must be satisﬁed

prior to commencing the

installation and commissioning

process.

The heater must be positioned

and installed to comply with all

relevant standards and guidelines.

The heater installation should

meet the local and national ﬁre

regulations and insurance criteria;

this is critical if the heater is to be

installed within a special risk area

(e.g. being within close proximity

to where petrol engined vehicles

are stored or parked, where

cellulose spraying takes place,

where woodworking machinery is

being operated, etc.).

The heater must not be installed

within an area with unsuitable

conditions, e.g. where the

atmosphere is highly corrosive, has

a high degree of salinity, or where

high wind velocities may affect

burner operation.

Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 7

Suitable protection should be

provided for the appliance when it

is to be located in a position where

it may be susceptible to external

mechanical damage; for example,

fork lift trucks, overhead cranes

etc.

Heaters must not be located in hazardous

areas, however, it is permissible for the

heater to supply air to such areas.

The heater must not be installed within

an environment where there is a high

concentration of chlorides, ﬂuorides, salts,

or other aggressive or volatile chemicals/

compounds. Nor should the heater be

positioned where the burner could be

adversely affected by high winds or

draughts.

The location chosen for the heater must

allow for the ﬁtting of an effective ﬂue

system.

The location must also allow for adequate

clearance for the air supply, return air

circulation, gas supply and electrical supply,

whilst also providing good and safe working

access.

The heater must be installed on a ﬂat and

level surface made from non-combustible

material, which is sufﬁciently robust to

withstand the weight of the heater and any

ancillary equipment.

General requirements

Unauthorised modiﬁcation of the

appliance, or departure from the

manufacturers guidance on

intended use and recommended

practices may constitute a hazard.

To ignore the warning and caution

notices, and advice from the

manufacturer on installation,

commissioning, servicing, or use,

will jeopardise any applicable

warranty.

Moreover, such a situation could

also compromise the safe and

efﬁcient running of the appliance

itself and thereby constitute a

hazard.

All heaters must be earthed.

The installation of the appliance must meet

all the relevant national, regional and local

criteria.

Prior to installation the following

points should be considered:-

• The position of the heater for the

optimum efﬁcient distribution and

circulation of warm air.

• The position of the heater relative to the

route of the ﬂue.

• The position of the heater relative to the

supply of fuel.

• The position of the heater relative to the

electrical services, and if appropriate,

any additional controls.

• The position of the heater relative to the

supply of fresh combustion air.

• The height if applicable at which the

heater is to be mounted and potential

stratiﬁcation/circulation problems.

• The position of the heater relative to

service and maintenance requirements.

The heater output should be sized to

suit the area that it is heating; heat loss

calculations must be carried out to ensure

the correct sized heater is installed. The

Reznor technical department can provide

guidance.

The appliance is designed to work in a

maximum ambient temperature of 40°C.

The air heaters are designed for mounting

directly on the ﬂoor and do not need any

ﬁxing.

PAGE 8 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0

Electrical supply

Ensure the supply is in accordance

with the manufacturer’s

recommendations and is as stated

on the appliance data plate.

The main electrical supply

must not be switched off or

disconnected as a method for

stopping the heater; the exception

to this is in an emergency, or

during servicing, where the

heat exchanger has been given

sufﬁcient cooling time to prevent

damage from occurring. Claims for

damage will not be considered if

they result from incorrect wiring

or incorrect use of the heater.

Wiring external to the heater must be

installed in accordance with all local,

regional and national regulations.

The means of connection to the main

electrical supply must allow for complete

electrical isolation of the heater and

furthermore, the supply should only be used

to serve the heater itself and no other plant

or equipment.

The position of the isolation switch must

be such that it is adjacent to the heater and

easily accessible at all times. In addition,

the isolator itself must have a contact

separation of not less than 3mm.

The control fuse ratings are detailed on the

appliance data plate.

Ensure that the electric and gas or

oil supplies are turned off before

any electrical work is carried out

on the heater.

Ensure that wiring cannot make contact

with any surfaces liable to be subject to

high temperatures or where the insulation

of the wiring could be impaired as a result

of such contact.

Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0 PAGE 9

General

This manual and the burner manual are

integral parts of the heater, therefore they

should always be carefully kept and should

always be provided together with the

heater, if it is transferred to another owner

or user. If this manual or the burner manual

is damaged or lost, a new one should be

requested from the installer or from the

manufacturer.

After unpacking the product, please check

the contents to ensure all components are

present. If not, please contact your supplier.

Before installation, carefully read these

instructions and follow the processes

explained by the manufacturer. These

instructions are only valid for appliances

designed to operate in Europe. If the

country code and gas category on the

appliance data label does not match the

country of installation or the country

codes and gas categories as shown in this

instruction manual, it will be necessary to

contact the distributor or manufacturer

to provide the necessary information

for the modiﬁcation of the appliance to

the conditions of use for the country of

installation.

Installing, commissioning, testing,

programming and maintenance of these

products must only be carried out by

suitably qualiﬁed and trained technicians

and in full compliance with all applicable

regulations and current best practices.

The installation must be carried out by

suitably qualiﬁed personnel who, at the

end of the work, will commission the

appliance and issue to the owner a copy

of the commissioning report, which also

conﬁrms that the installation has been

carried out in accordance with regulations

& standards applicable to the country of use

and in accordance with the manufacturers

instructions.

This appliance has been manufactured

speciﬁcally for room heating and must be

used only for this purpose. Contractual

liability of the manufacturer in respect

of damages caused to people, animal or

premises by incorrect installation, settings,

maintenance or by improper use of the

heater is excluded.

Check if the appliance as described on the

packaging label is in accordance with the

correct type and model as speciﬁed on the

data plate and complies with your customer

order.

Check that the temperature ranges given

and those of the location match. The

appliance must be powered with a voltage

corresponding to the value shown on the

rating plate.

The unit must be installed in accordance

with the rules in force and local regulations/

legislation as appropriate plus all local

building codes. Installers should satisfy

themselves that the gas or oil pipework

installation is carried out in accordance with

all current legislation, Codes of Practice and

recommendations.

Additionally it may be necessary to protect

the gas valves which form part of the

heater or burner assembly from potential

pipe contamination particularly, but not

exclusively, where copper gas pipework is

used.

If the appliance is to remain

unused for long periods, it is

recommended that the following

operations are carried out:

• Turn the appliances’ electrical

supply off via the local isolator.

• Close the main fuel supply

valve.

GENERAL

PAGE 10 Reznor, COMET+, Installation Manual, EN 2023-03, D301518 Iss 0

If there is a long period of time between

operation of the heater, it is recommended

that you contact your installer to carry out

the new start-up.

The heater must be ﬁtted with approved

accessories and spares only. The

manufacturer is not liable for damages

arising from the improper use of the heater

or from the use of non-original materials

or accessories. References to Laws,

Regulations, Directives and Technical Rules

mentioned in this manual are provided only

for information purposes and are in force

when the manual is printed.

The introduction of new provisions or

amendments to current laws does not

represent an obligation of the manufacturer

towards third parties.

Repairs or maintenance are to be performed

by suitably trained and qualiﬁed personnel

only.

Do not modify or tamper with the appliance

- the manufacturer will not be held

responsible for any third party modiﬁcations

made to the heater.

The services that are to be connected (fuel

pipes, power supply, etc.) must be suitably

secured and must not be hazardous or

present the risk of a trip hazard.

The manufacturer is responsible for the

product compliance with Laws, Directives

or Construction Rules in force when the

product is marketed. The knowledge and

observance of the laws and standards

regarding plant design, installation,

operation and maintenance are the sole

responsibility of the designer, installer and

user. The manufacturer shall not be held

responsible for failure to comply with

the instructions of this manual, for the

consequences of any operations carried

out and not speciﬁcally provided for or for

translations open to misinterpretation.

The electrical system must feature suitable

individual and independent electrical

protection for each appliance which, in case

of accidental failure, will be activated on the

single appliance without prejudice to the

proper operation of the other units present

on the installation.

Note:

The appliance is designed to be operated

with the heating capacity and the air

ﬂow rate speciﬁed in the technical data

section following. If the heating capacity

is too low and/or the air ﬂow rate is too

high, combustion products may condense,

resulting in the irreparable corrosion of the

heat exchanger. If the heating capacity is

too high and/or the air ﬂow rate is too low,

overheating of the heat exchanger may

occur, resulting in the activation of the high

temperature safety devices and could cause

damage to the exchanger.

Disposal instructions

Disposing of the appliance must be

carried out by an authorised company

and in compliance with the applicable

laws. Before taking waste to Authorised

Collection Centres, dismantle and separate

the various materials that comprise it. In

summary these are:

• Ferrous materials

• Aluminium and copper

• Electrical wiring

• Seals and insulating materials

• Plastic materials

• Electronic cards

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