Valor 492CNA Installer's & Owner's Manual page 10

8.
CHECK APPLIANCE OPERAWON
Depress the control knob. Turn counterclock-
wise until resistance is felt just before the
piezo-electric ignition is activated. Keep the
knob depressed for a few seconds to purge
air from the gas lines. When it is judged that
the air has been purged, keep the knob
depressed and turn to the IGN position. A
spark should be produced which should ignite
the pilot and cross lighting burner.
When ignition has been achieved, keep the
control knob depressed for approximately five
seconds to allow the thermocouple probe to
warm up then release
it.
If the bumer does not
remain alight, ensure that the air has been
purged.
Check that the burners are correctly alight at
all settings as shown in the following table:-
Turn off after checking. To turn o f f , Push the
control partially in, turn clockwise to OFF and
release the knob. If any resistance is
experienced at the IGN position, release the
knob before turning to OFF.
Note: If the fire is turned off while hot, wait
three minutes before relighting.
CONTROL
KNO6
SElTING
IGN
1
2
3
9.
CHECK SYSTEM PRESSURES
For input adjustment, the gas supply pressure
to the appliance inlet must be between the
figures in the table:-
BURNERAPPEARANCE
Pilot
&
cross lighting burner
only on.
Pilot & cross lighting burner on.
Front burner on low.
Pilot 8 cross lighting burner on.
Front burner on low.
Rear burner on high.
Pilot & cross lighting burner on.
Front burner on high.
Rear burner on high.
The burner manifold pressure is controlled by
a built-in nonadjustable regulator.
The manifold pressure should be checked at
the pressure test point which is located
immediately downstream o f the regulator (i.e.
located above the regulator). The pressure
check should be carried out with the fire
alight and the control knob at setting 3.
The pressure setting should be within the limits
shown in the table.
If the pressure reading at this test point is
incorrect but the supply system pressure is
correct when measured at the test point
upstream o f the regulator, then the regulator
is faulty and should be replaced. After checking
the pressure. turn off the fire, remove the
- ,
pressure gauge and replace the pressure test
sealing screw. Test the sealing screw for gas
soundness.
TEST TAPPING POINT
Supply
-
Upstream of
heater regulator
Manifold
-
Downstream
of heater regulator
at #4 setting)
10.
CHECK FOR CORRECT MNTlNG
A CHECK FOR CORRECT VENTlNG OF
COMBUSTION PRODUCTS MUSTBE MADE
BEFORE THE INSTALLED HEATER IS LEFT
WITH THECUSTOMER. THETESTSHOULD
BE MADE IN THE FOLLOWING MANNER
BEFORE REFllTlNG THE OUTER CASE.
(Note: This appliance is supplied with a special
smoke match tube.)
Light the heater and set the control to No.
3
position.
After the appliance has been alight for five
minutes test with a lighted smoke match
inserted in the special tube supplied. Insert the
tube horizontally along the rear edge of the
draft diverter up to the mark on the tube
(4"
from the end)
-
see figure 12.
PRESSURES (in w.c.)
NATURAL
MAX
14.0
9.7
MAX
10.5
4.2
,
MIN
11.0
9.3
MIN
5.0
3.8