INSTALLATION AND OPERATION INSTRUCTIONS
1-4
SL 80-399 MODULATING GAS BOILER
SL 26-260 G3, SL 40-399 G3 MODULATING GAS BOILERS
•
At a new construction site, or during renovations, action must be taken to protect
the boiler from drywall dust or other construction related contaminants; combustion
air should be drawn from a CLEAN source (e.g. outdoors) and the boiler should be
isolated from interior dust sources. Do not seal boiler case openings directly when
firing - allow for air circulation and ventilation in the immediate area.
SURFACE
DISTANCE FROM
COMBUSTIBLES
DISTANCE FOR INSTALLATION
AND SERVICE
Front
1"
24”
Rear
0"
0”
Left Side
1"
0” - (to non-combustibles)
Right Side
1"
4” (for electric and gas if required
Top
12”
12” (for vent connection)
Bottom
12"
12” (for condensate trap and piping)
Table 2 - Clearance from boiler cabinet
A minimum distance below the boiler of 12" is required to provide clearance for the
supplied condensation trap assembly. More clearance will typically be required to
accommodate associated water and gas piping.
1.4 EXHAUST VENTING AND AIR INTAKE
It is important to carefully plan the installation to ensure the appropriate vent materials,
travel and termination decisions are included. Specific attention is warranted to manage
the impact of the steam plume normally experienced at the exhaust terminal of a
condensing boiler. Generally, intake and exhaust pipes should terminate at a rooftop or
sterile wall location, to maximize customer satisfaction. Keep exhaust plumes well away
from all building air intakes including those of neighboring properties.
WARNING
DO NOT MOUNT THIS
BOILER TO HOLLOW WALL
STRUCTURES - The weight of the
boiler alone is 240 pounds. The
combined weight of the boiler, its
water contents and associated
piping components can exceed
300 pounds. Fasteners must be
rated for this strain, and must
be firmly anchored into solid
material that will support this
weight.
Installers are to take all
necessary precautions to avoid
injury during the installation of
this boiler.
DANGER
Do not common vent SL series
modulating boilers with any other
existing or new appliance.
Figure 2: Wall mounting of boiler
WARNING
Exposed water piping and
associated components
(relief valves, circulators,
etc.) should not be in contact
with combustible materials.
Check local codes for required
clearances and/or provide
adequate insulation.
