5.4.8
Install the right cross log (fig. 18).
The underside of the log is marked “R” (for right)
and “F” (for front).
Place the cross log so that the right side peg
projecting from the front log is inserted into the hole
in the cross log and with the rear of the cross log
resting on the flat area of the rear log.
Be careful
not to break the peg projecting from the log.
The left
branch of this cross log should rest on top of the
other cross log.
5.5
REFIT THE WINDOW
5.5.1
Hook the top of the window frame over the firebox
top front edge.
5.5.2
Secure the window unit in place by refitting two
screws at the bottom corners of the unit.
5.6
CHECK OPERATION ON CONTROLS
Check ignition, valve control and thermostat
settings as described in the lighting instructions
section further on in this manual.
5.7
CHECK SYSTEM PRESSURE
The appliance is pre-set to give the correct heat
input with the gas for which it is designed.
The burner manifold pressure is controlled by a
built-in non-adjustable regulator.
The gas supply pressure to the appliance inlet and
the manifold pressure must be between the figures
shown in section 1.4
The manifold pressure should be checked at the
pressure test point which is located on the
thermostat unit (see fig.10). The pressure check
should be made with the appliance burning, the
valve control set at “MAX” and the thermostat
control turned to "HI".
Fig. 18 Right cross log location
Pressure testing supply line
The appliance and its individual shut-off valve must
be disconnected from the gas supply piping system
during any pressure testing of that system at test
pressures in excess of 1/2 psig (3.5kPa). The
appliance must be isolated from the gas supply
piping system by closing its individual manual shut
off valve during any pressure testing of the gas
supply piping system at test pressures equal to or
less than 1/2 psig (3.5kPa).
5.8
AERATION ADJUSTMENT (737CN & 737AN
Only)
On natural gas appliances both front and rear
burners are equipped with adjustable shutters to
control primary aeration. The air holes are at the
right side of the front and rear burner rails - See fig
19. The shutters can slide to the right to reduce the
air supply or to the left to increase it.
The appliance is supplied with the shutters set to
suit the vast majority of installations. No adjustment
should usually be necessary. However, in certain
installations (e.g. Low Btu value gas, high altitude) it
may be necessary to adjust the shutter position of
one or both of the burners to obtain the optimal
visual effect.
Aeration is not adjustable on Propane
appliances (Model #737AP)
Fig. 19 Aeration shutters
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