4
5)
OIL SUPPLY
The oil tank and lines must be installed in accordance
with local codes and regulations. The burner can be
hooked up with a one pipe system if the oil level in the
tank is always over the burner level. For an outside
aboveground fuel tank hook up, ideally use a one pipe
system with nominal dimension of 12 mm (1/2”)
diameter, and be sure to have the oil filter and at least
3 meters (10 ft) of piping installed inside, to allow the
fuel oil to warm up before reaching the burner in very
cold weather. The following configurations must be
respected regarding the oil pump by-pass plug. With
Riello burner, remove the by-pass plug for one pipe
system.
The installation must include an oil filter and shutoff
valve. Make sure the piping has no leaks or
stoppages. Oil lines shall include no couplings. Never
use compression fittings. For a 2 pipes system, use
the same diameter for both the suction and the return
lines and set them at the same depth in the oil tank.
Additional information can be found in the burner
installation brochure that came with your boiler.
6)
CHIMNEY
6.1)
Chimney draft
Chimney draft must be strong enough to ensure safe,
reliable operation of your unit.
6.2)
Installation
The connecting flue pipe diameter should never
exceed that of the chimney and its horizontal runs
should have a minimum slope of 1/4” (6.4 mm) per
foot (300 mm) of run upward toward the chimney. The
use of a damper in the connecting flue pipe is strictly
prohibited. If more than one pipe are to be connected
to the same chimney, the sectional area of the
chimney must be equal to the total of individual
sectional areas. The usage of a draft control is
compulsory. His omission constitutes sufficient
grounds for voiding your warranty.
NOTICE
The formation of condensation on the three
outer sides of an outside chimney is a
possibility with efficient hot water boilers.
Should this happen, a chimney liner or a
“SMH” sidewall venting system should be
installed.
7)
BURNER INFORMATIONS
The burner is shipped in a separate box from the
boiler and must be installed following the next steps :
1. Verify the model number on burner box to be
match with the one on the boiler nameplate;
2. Install the nozzle supplied and verify the
electrodes setting;
3. Install the burner on the boiler using supplied nuts
already on the studs. Do not forget the fireproof
gasket supplied with the burner. For the Riello
burners with an adjustable flange, make sure that
the end of the blast tube is flush with the inside
surface of the combustion chamber;
4. Connect the oil pipe(s) to the burner pump;
5. Perform electrical connections in accordance with
the appropriate diagram (See paragraph 4).
TABLE 1
Chimney draft
Models
Chimney size
inches (mm)
Connecting pipe
inches (mm)
Recommended draft
inches (mm) W.C.
Minimum
Maximum
HMD-124 @ 146
5 (127)
6 (152)
7 (178)
0.035 (0.9)
HMD-163 @ 179
6 (152)
8 (203)
7 (178)
0.05 (1.3)
