Manual Elco R3500 (page 23 of 192) (English, German, Dutch, French, Italian)

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Installation

Connecting the boiler

Gas connection (6)

The gas connection must be made by

an authorized installer in accordance

with the applicable national and local

standards and regulations.

Connect the gas line from the system

tension free to the gas connection (6) of

the boiler. A gas cock should be

mounted directly behind the boiler.

A gas filter can be mounted directly on

the gas connection of the boiler.

Flue gas connection (5)

Regulations for the construction of flue

gas systems are very different for each

country. It should be ensured that all

national regulations with regard to flue

gas systems are respected.

Connect the flue gas system to the flue

gas connection (5) of the boiler, use

fluegas systems with seamless connec-

tions only. It’s not necessary to make a

separate condensate drain for the flue

gas system, as the condensate will be

drained via the syphon of the boiler.

Please note the following issues:

It’s recommended to use stainless

steel systems

The diameter of the flue gas system

must be chosen by calculation ac-

cording to the national regulations

Construct the flue gas system as

short as possible (for maximum

length see planner documentation)

Construct horizonal ways with a mini-

mum angle of 3º

Air intake connection (3)

When using the boiler roomsealed. The

air intake can be connected if the boiler

was ordered as roomsealed. The dia-

meter should be calculated according

to the national regulations, together

with the flue gas system. The total re-

sistance of both systems should never

overcome the maximum permissible

resistance of the fan inside the boiler

(see also chapter: Technical data).

Electrical connection (4)

The electrical connection must be ma-

de by an authorized installer in

accordance with the applicable national

and local standards and regulations.

For the power supply it’s necessary to

use a mains isolator switch with a con-

tact opening of at least 3 mm

within the boiler room. This switch can

be used to switch off the power supply

for maintenance purposes.

Cables can be inserted through the

cable trays and glands at the back of

the electrical panel at the front of the

boiler.

Connect all wires to the terminals ac-

cording to the wiring diagram of the

boiler (enclosed in map attached to

back panel of the boiler).

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Elco R3500 Manual

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