5
2.11
COMBUSTION PRIMARY CONTROL
(ON BURNER)
The purpose of this control is to sequence the operation of
the burner. The first function is to close the burner circuit
and the ignition transformer circuit when the aquastat calls
for heat and also to open the burner circuit when the water
temperature is attained. The second function is to shut-off
the oil burner in the case of lack of ignition, oil, flame, proper
voltage or due to burner malfunction.
2.12
INSTALLING THE OIL BURNER
The nozzle is installed on the burner. Make sure to adjust
the nozzle and electrode as per Table 2. Mount burner on
water heater and use the gasket supplied, between burner
mounting flange and the water heater.
When reusing a compatible burner in good condition, verify
the insertion length and adjust the burner flange accordingly.
Always change the nozzle for a new one as specified on the
nameplate.
CAUTION
Riello burners requires a ceramic felt sleeve (amulet
#N05F016 over the tube.
If this caution is not observed, the warranty is null and
void.
2.13
NOZZLE DATA
Refer to the Technical Specifications (Table 2).
2.14
FUEL OIL PUMP
The fuel oil pump is developed for pressure atomizing type
oil burner service and has a built-in pressure regulating
valve and oil filter. Connections are provided for both, a one
pipe system and a two pipe system. Pump pressure is
gauged at the factory. This is the proper working pressure
and should be checked with a suitable gauge at the spot
indicated on the pump.
2.15
OIL TANK AND PIPING
The oil tank must be installed on a suitable base in order to
prevent settling and the foundation must be of non-
flammable material. A manual shut-off valve and an oil filter
must be installed in the oil supply line located at the outlet of
the oil tank. Use properly sized oil supply lines for
installation. Consult the latest C.S.A. code and supplements
for installation of oil burning equipment. An oil return line
must be used on an installation where the oil level of the
tank is below the burner. This return line must be the same
size as the suction line.
At the beginning of every heating season have a qualified
service technician check the entire oil distribution system for
leaks.
2.16
VENTILATION AND COMBUSTION AIR
Normally, infiltration of air into the home is adequate to
provide the necessary volume of air for combustion and
ventilation. When a unit is installed in a room under high
negative pressure conditions, provisions should be made for
an outside source of combustion air. If the unit is located in
an enclosed area, two openings are required, one near the
floor and the other near the ceiling. Each opening should
have a minimum area of one square inch per 1,000 BTU/h,
free of any obstruction. In the case of an outside wall, only
one opening is required. This opening must be protected by
a louver to prevent snow or rain penetration. A minimum
area of one square inch per 5,000 BTU/h is required and
must be free of any obstruction.
3.0 OPERATION
3.1
INITIAL START-UP
1. Turn-off the electric switch, which controls the water
heater (see that proper fuses are installed, max: 15
amps);
2. Fill the water heater (leave inlet water valve open);
3. Carefully check for water leaks;
4. Open manual shut-off valve from oil tank to burner;
5. Adjust the combustion air band or set the damper to a
quarter open position;
6. Press the reset button on the combustion safety relay
ONCE ONLY
(relay is mounted on burner);
7. Turn the switch to "ON" (burner should start);
8. Purge the oil line through the valve located near the
pump (refer to the instructions enclosed with the
burner).
9. Carefully check for oil leaks.
3.2
ADJUSTMENTS
CAUTION
In order for the manufactu
rer’s warranty to apply, the oil
burner must be adjusted between No. 0 and 1 of smoke
density. There must also be a minimum draft of -
0.02’’
w.c. at the vent connector. These adjustments must be
made with a Bacharach instrument or equivalent. If not,
the warranty is null and void.
1. Adjust the draft regulator to obtain a minimum of
-
0.02” W.C. The reading must be taken between the
water heater flue outlet and the draft regulator;
2. Adjust the combustion air band to produce a No. 1
smoke spot maximum on the Bacharach scale. The
reading must be taken only when the combustion
chamber is hot and the observation door is closed;
3. Set the operating and the Limit Control as previously
specified.
3.3
SHUT-DOWN
1. Turn off power to the unit.
2. Close oil valve at oil storage tank.
Note:
Always keep the fuel supply valve closed if the burner
is shut-down for an extended period of time.