Install Instructions

MNEZ123 111820
– 5 –
Model EZ 1,2,3 and LF Oil/Bio-fuel Burners — Instruction Manual
2. Prepare Site • Assemble Burner • Mount Burner
Inspect/repair/replace vent system
Do not install this burner unless you have veried
the entire vent system and the appliance are in good
condition and comply with all applicable codes. And ...
The vent and chimney must be sized and constructed
in accordance with all applicable codes.
Do not install or use an existing manual damper in the
breeching (vent connector) or chimney.
Do not connect the appliance vent connector to a
chimney or vent serving a replace, incinerator or
solid-fuel-burning apparatus.
In a cold climate, do not vent into a masonry chimney
that has one or more sides exposed to the outside.
Install a listed stainless steel liner to vent the ue
products.
A defective vent system could result in severe personal
injury, death or substantial property damage.
Prepare vent/chimney
• Secure all metal vent joints with screws, following the vent
manufacturer’s instructions. Seal all joints in the vent system
and chimney. Repair masonry chimney lining and repair all
mortar joints as needed.
• Install a barometric draft regulator in the vent piping if specied
in the appliance manual. (The damper must be located in the
same space as the appliance.)
• Provide support for the vent piping. Do not rest the weight of
any of the vent piping on the appliance ue outlet.
Combustion/ventilation air openings
Even if combustion air is piped to an (optional) burner
air intake adapter, the boiler room must still have the
minimum air openings listed in Table 2 and described
in the following paragraphs. This is to provide needed
ventilation to keep the burner and appliance cool and to
avoid the boiler room developing negative pressure.
The combustion air openings MUST be sized based
on the total input of all appliances in the room.
Check appliance manual and applicable codes for required sizing/
design/placement of combustion/ventilation air openings. You can
use the following general guidelines, taken from NFPA 31, provided
they meet all local requirements.
Louvers/screens
• Air opening sizes are always given in free area. This means
after deduction for louver obstruction. If you can’t nd the louver
reduction for the grilles used, assume free area is 20% of total
for wood louvers, or 60% of total for metal louvers.
• Screens can be no ner than ¼-inch mesh, and must be ac-
cessible for cleaning.
Residential installations
Unconned spaces (at least 7,000 cubic feet per GPH)
• An unconned space means a room with at least 7,000 cubic
feet volume for each GPH input (or 50 cubic feet per MBH) of
all appliances in the room. Example: For each 1 GPH oil input,
Table 2 Minimum combustion/ventilation air openings
the room must have 7,000 cubic feet (875 square feet with an
8-foot ceiling height.)
• Open basements and crawl spaces are usually large enough,
and will generally allow enough air inltration so special provi-
sions will seldom be required.
• If the building is tightly constructed, you will have to provide
outside air openings into the building. The total free area of the
openings must be at least 1 square inch per 5,000 Btuh (28
square inches per GPH) of all appliances in the space.
• See Table 2 for summary.
Air openings to conned spaces
(less than 7,000 cubic feet per GPH)
• Air taken from inside building only —
• Provide two openings — one near oor, the other near ceiling.
Provide free area of 140 square inches per GPH input. If build-
ing is tightly constructed, provide air opening(s) into building
providing 30 square inches per GPH as well.
• Air taken from outside —
• Direct through outside wall or vertical ducts: Provide two
openings — one near oor, the other near ceiling. Provide
free area of 35 square inches per GPH input.
• Through horizontal ducts: Provide two openings — one near
oor, the other near ceiling. Provide free area of 70 square
inches per GPH input.
• Ventilation air from inside/combustion air from outside
Size openings to interior to provide 140 square inches free area
per GPH input. Size outside air duct to provide 28 square
inches free area per GPH.
• See Table 2 for summary.
Source
of air
Mininimum
free area
of opening(s)
Total grill area, typical (sq. in.)
for ring rates of:
1 GPH 2 GPH 3 GPH
Wood Metal Wood Metal Wood Metal
Residential installations, unconned spaces (7,000 cu. ft. volume per GPH)
From inside building,
typical construction
No special openings required if natural inltriation is sufcient.
From inside building,
tight construction
1 or more grilles
30 Sq. in./ GPH
150
50 300 100 450 150
Residential installations, conned spaces
From inside building
through interior walls
2 openings, each
140 Sq. in./ GPH
700 234 1400 467 2100 700
From outside building
direct through outside
wall
2 openings, each
35 Sq. In./ GPH
175 59 350 117 525 175
From outside building
through vertical ducts
2 openings, each
35 Sq. In./ GPH
175 59 350 117 525 175
From outside building
through horizontal
ducts
2 openings, each
70 Sq. In./ GPH
350 117 700 234 1050 350
Ventilation through
interior walls, with an
opening to outside
2 Int. openings,
each
140 Sq. In./ GPH
1 Exterior opening
28 Sq. In./ GPH
700
140
234
47
1400
280
467
94
2100
420
700
140
Commercial installations
From outside building
direct through adjacent
outside wall
One opening through outside wall, providing free area of at least
28 Square inches per GPH input
Other conditions
Size openings per local codes/jurisdictions