Roberts Gorden MGB Series Instrukcja Obsługi Pobierz pdf (Strona 33)

SECTION 9: WIRING AND ELECTRICAL INFORMATION

27 of 85

SECTION 9: WIRING AND ELECTRICAL INFORMATION

9.1 Electrical Supply

A 230 V 50 Hz 1 Ø supply is required for all heater

Models 015 to 030 connected to the heater terminals

L1, N and Earth.

Standard models 040 to 0100 and all High Flow

models require a 400 V 50 Hz 3 Ø and neutral

supply connected to the heater terminals L1, L2, L3,

N and Earth.

All heaters and controls must be correctly earthed.

All external wiring must comply with the relevant IEE

and local regulations and be carried out by a

qualified electrician.

Polarity "L & N" must be correct. The voltage

between neutral and earth should be 0 and never

exceed 15 volts.

An isolator with a contact separation of at least 3

mm (.12

") on all poles should be installed adjacent

to the heater, but not attached to it, to disconnect all

supplies to the heater and where necessary to

isolate the remote control panel.

9.2 Remote Controls

The heater is designed to be operated by controls

installed remotely from the heater. See Page 28,

Section 9.3. through Page 39, Section 9.14.

9.2.1 Burner Controls (Thermostat)

Controls to operate the burner must be voltage free

contacts connected between terminals 2 and 3 of

the main terminal block.

9.2.2 Positioning Room Thermostats or

ROBERTS GORDON

Control

A room thermostat or Roberts-Gordon Europe

Limited control should be mounted on a wall or

column at a height of approximately 1.5-1.8 m (5'-6')

from the floor to measure the ambient temperature.

It should be clear of both cold draughts and the

direct path of warm air from the heater.

9.2.3 Remote Frost Thermostat

When required, connect to terminals 2 and 3 in the

main terminal block.

Locate the thermostat within the heated space

adjacent to the most vulnerable equipment that

requires protection.

See Page 28, Section 9.3 through Page 39, Section

9.14.

9.2.4 Controls for High/Low Burner Operation

For heaters with a high/low burner, the controls will

need to provide two stage signal to operate these

burners. This is best provided by a two stage

thermostat.

The thermostat may control the heater outlet

temperature if the heater is designed for a duct

distribution system or the room temperature.

The site wiring will be across terminals 2 and 3 for

any time control and the on/off function of the burner

(stage two), and across terminals 7 and 8 for the

high fire (first stage) setting.

The b

urner will then operate as follows:

Temp. from cold up to the 1st set point..................

............................................ Full fire at max. rate

Temp. above 1st set point up to 2nd set point........

............................................ Low fire at min. rate

Temp. above 2nd set point ...............................Off.

9.2.5 Remote Fan Controls

The fan will operate automatically providing there is

a constant 230 V supply to the main terminals.

A switch or control wired between terminals L & 1 in

the terminal block will allow external control of the

fan(s).

The fan may be controlled to operate continuously

from an external control, with the burner cycling on

and off, providing that the fan run-on at close down

is not impaired.

DANGER

Electrical Shock Hazard

Disconnect electric before service.

More than one disconnect switch may be

required to disconnect electric from

equipment.

Equipment must be properly grounded.

Failure to follow these instructions can result

in death or electrical shock.

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 91 92

Komentarze do niniejszej Instrukcji

Brak uwag

Roberts Gorden MGB Series Instrukcja Obsługi Strona 33

Komentarze do niniejszej Instrukcji