2
A. CLEARANCES
Unit may be installed on combustible flooring, provided the 
boiler is not set on carpet and a metal drip pan is placed 
under the appliance.
Unit may be installed in a closet with the above clearances. 
See also Section B, Air for Combustion and Ventilation.
B. AIR FOR COMBUSTION AND
VENTILATION
1. Be certain adequate facilities are available to provide 
air for satisfactory combustion and ventilation.
2. Appliances Located in Unconfined Spaces.
a. For installation in unconfined spaces with
conventional construction and larger areas such 
as basements, the supply of air for combustion 
and ventilation can usually be considered 
adequate.
3. Appliances Located in Confined Spaces.
a. All air from inside the building: Provide two
permanent openings communicating directly with 
an additional room. If all air for combustion and 
ventilation is to come from within the building: 
two openings, one near the ceiling and one near 
the floor of the boiler room shall be provided 
with the minimum free area of each opening 
equal to 140 sq. in. per gallon of oil burned.
b. If all air for combustion and ventilation is to
come from outside the building: two openings, 
one near the ceiling and one near the floor of the 
boiler room shall be provided with the minimum 
free area of each opening equal to 35 sq. in. per 
gallon of oil burned.
If ducts are used to convey the air, areas of 35 
sq. in. per gallon of oil burned for vertical ducts 
or 70 sq. in. per gallon of oil burned for 
horizontal ducts are to be provided. Ducts shall 
have the same area as the free area of the 
openings to which they are connected.
PREINSTALLATION
1. PREINSTALLATION
Read carefully, study these instructions before beginning work. It will save time. Study the included drawings. Save these 
instructions for reference.
This boiler must be installed by a qualified contractor.
The boiler warranty can be voided if the boiler is not installed, maintained and serviced correctly.
Table 1.1: Clearances from Jacket and Vent System
Required from Jacket
to Combustible
Construction
Recommended From Jacket for
Accessibility and Mounting Controls
To p 5"* 24" to clean flueways.
Front 16.5"* 16.5" from jacket due to burner.
Left 2"* 12" due to burner swing radius.
Right 2"*
18" on steam with tankless heater or with 
Float LWCO.
9" in area of boiler service switch and 
junction box.
Rear 2"*
9" for mounting relief valve in standard 
location**.
Vent Pipe (Single Wall) - 9" to Combustible Construction. 
Clearance may be reduced using methods in NFPA 31.
Vent Pipe (Double Wall) - See Manufacturer’s Instructions.
The equipment shall be installed in accordance with those installation regulations in force in the 
local area where the installation is to be made, including the current edition of 
NFPA-31, Standard
for the Installation of Oil-Burning Equipment
, and in Canada, 
CSA B139, Installation Code for Oil
Burner Equipment
. These shall be carefully followed in all cases. Authorities having jurisdiction
shall be consulted before installations are made.
NOTICE
Never burn garbage or paper in the 
unit, and never leave combustible 
material around it.
CAUTION
Do not tamper with boiler controls.
CAUTION
* Consider also vent pipe clearance, including distance from edge of
flue outlet to combustible construction (as applicable).
** See dimensional drawing for alternate relief valve location.