3
3
Model
Flue
Size (Nominal Bore)
GP-300
230mm (9 in)
GP-400
230mm (9 in)
GP-500
230mm (9 in)
GP-750
255mm (10 in)
GP-900
255mm (10 in)
Wherever possible horizontal runs should
be avoided, but where this is unavoidable
every one foot of horizontal flue must be
followed by three feet of vertical. If the total
flue height exceeds 8 metres please contact
our PARFLUE systems dept TEL 0161
330 3838.
The draft should not exceed
4mmWG
(Positive)
Before the unit is operated a check must be
made to ensure that the flue has no
obstruction and terminates in such a
position that down draught is avoided. An
8mm(5/16in) diameter hole should be made
in the flue pipe approximately 1m (3 feet)
from the unit to see that the flue is pulling
and to make a check on combustion. This
check should be made after the unit has
been running for approximately 15 minutes.
6 Gas Pipe
The nominal inlet pressure for natural gas
should be 20mb(8in. w.g.)
. The pipe to the heater should be
adequately supported along its length, and
also contain as near to the heater as
practical a gas cock to enable the burner to
be removed for servicing. The units are
fitted with a main gas governor. This is
adjusted at the works to give the correct
rate for the appliance.
7. Electrical
The electrical supply position is located on
the front of the heater.
A CONTINUOUS ELECTRICAL
SUPPLY TO THE UNIT IS
REQUIRED
The GP 300 model requires an operating
voltage of 220/240v single phase. The rest
of the range 400 to 800 require 380/440v
three phase and neutral ,the burner utilising
one phase and neutral. Circuit diagrams are
attached to the inside of the lower front
panel.
On three phase units check the direction of
rotation of the main fan is correct. A
Honeywell CM51 controller time clock
room thermostat and frost thermostat is
supplied with each unit.
Positioning of the Controller is important
and care must be taken to avoid cold and
draughty areas and sites likely to be
