Roberts Gorden Combat MGB0100, Руководство по установке

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SECTION 9: W
IRING AND
E
LECTRICAL
I
NFORMATION
27 of 85
SECTION 9: WIRING AND ELECTRICAL INFORMATION
9.1 Electrical Supply
A 230 V 50 Hz 1 Ø s u pply is req u ired for all heater
Models 015 to 030 connected to the heater terminals
L1, N and Earth.
Standard models 040 to 0100 and all High Flo w
models req u ire a 400 V 50 Hz 3 Ø and ne u tral
s u pply connected to the heater terminals L1, L2, L3,
N and Earth.
All heaters and controls m u st be correctly earthed.
All external w iring m u st comply w ith the rele v ant IEE
and local reg u lations and be carried o u t by a
q u alified electrician.
Polarity "L & N" m u st be correct. The v oltage
bet w een ne u tral and earth sho u ld be 0 and ne v er
exceed 15 v olts.
An isolator w ith a contact separation of at least 3
mm (.12
"
) on all poles sho u ld be installed adjacent
to the heater, b u t not attached to it, to disconnect all
s u pplies to the heater and w here 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 b u rner m u st be v oltage free
contacts connected bet w een terminals 2 and 3 of
the main terminal block.
9.2.2 Positionin g Room Thermostats or
ROBERTS GORDON
®
Control
A room thermostat or Roberts-Gordon E u rope
Limited control sho u ld be mo u nted on a w all or
col u mn at a height of approximately 1.5-1.8 m (5'-6')
from the floor to meas u re the ambient temperat u re.
It sho u ld be clear of both cold dra u ghts and the
direct path of w arm air from the heater.
9.2.3 Remote Frost Thermostat
When req u ired, connect to terminals 2 and 3 in the
main terminal block.
Locate the thermostat
w ithin the heated space
adjacent to the most vu lnerable eq u ipment that
req u ires protection.
See Page 28, Section 9.3 through Page 39, Section
9.14 .
9.2.4 Controls for Hi g h/Low Burner Operation
For heaters w ith a high/lo w b u rner, the controls w ill
need to pro v ide t w o stage signal to operate these
b u rners. This is best pro v ided by a t w o stage
thermostat.
The thermostat may control the heater o
u tlet
temperat u re if the heater is designed for a d u ct
distrib u tion system or the room temperat u re.
The site w iring w ill be across terminals 2 and 3 for
any time control and the on/off f u nction of the b u rner
(stage t w o), and across terminals 7 and 8 for the
high fire (first stage) setting.
The b u rner w ill then operate as follo w s:
Temp. from cold u p to the 1st set point..................
............................................ F u ll fire at max. rate
Temp. abo v e 1st set point u p to 2nd set point........
............................................ Lo w fire at min. rate
Temp. abo v e 2nd set point ...............................Off.
9.2.5 Remote Fan Controls
The fan w ill operate a u tomatically pro v iding there is
a constant 230 V s u pply to the main terminals.
A s w itch or control w ired bet w een terminals L & 1 in
the terminal block w ill allo w external control of the
fan(s).
The fan may be controlled to operate contin u o u sly
from an external control, w ith the b u rner cycling on
and off, pro v iding that the fan r u n-on at close do w n
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.