Venting; Oil Burner; Oil Connections - Carrier 110 Series Installation, Start-Up, And Operating Instructions Manual

with the latest editions of NFPA-90A (Installation of Air Condi-
tioning and Ventilating Systems) and NFPA-90B (Warm Air
Heating and Air Conditioning Systems) or Canadian equivalent.
The supply duct work should be attached to flanged front opening
provided at discharge end of furnace. The return-air duct work
should be attached to flanged rear opening of furnace. See Fig. 2
for dimensions of these openings.
NOTE: The back (blower access opening) should not be used for
return air.
The following recommendations should be followed when install-
ing duct work:
1. Install locking-type dampers in all branches of individual
ducts to balance out system. Dampers should be adjusted to
impose proper static at outlet of furnace.
2. A flexible duct connector of noncombustible material should
be installed at unit on both supply- and return-air systems. In
applications where extremely quiet operation is necessary, the
first 10 ft (if possible) of supply and return ducts should be
internally lined with acoustical material.
3. In cases where return-air grille is located close to fan inlet,
there should be at least one 90° air turn between fan inlet and
grille. Further reduction in sound level can be accomplished
by installing acoustical air turning vanes or lining duct as
described in item 2 above.
4. When a single air grille is used, duct between grille and
furnace must be the same size as return opening in furnace.

VENTING

Venting of furnace should be to the outside and in accordance with
local codes or requirements of local utility.
OIL-FIRED APPLIANCES SHALL BE CONNECTED TO
FLUES HAVING SUFFICIENT DRAFT AT ALL TIMES TO
ENSURE SAFE AND PROPER OPERATION OF APPLIANCE.
For additional venting information, refer to ANSI/NFPA 211
Chimney, Fireplaces, Vents, and Solid Fuel Burning Appliances
and/or CSA B139 Installation Code.
This furnace is certified for use with Type "L" vent (maximum flue
gas temperature 575°F).
Vent System Inspection
Before furnace is installed, it is highly recommended that any
existing vent system be completely inspected.
For any chimney or vent, this should include the following:
1. Inspection for any deterioration in chimney or vent. If dete-
rioration is discovered, chimney must be repaired or vent must
be replaced.
2. Inspection to ascertain that vent system is clear and free of
obstructions. Any blockage must be cleared before installing
furnace.
3. Cleaning chimney or vent if previously used for venting a
solid fuel burning appliance or fireplace.
4. Confirming that all unused chimney or vent connections are
properly sealed.
5. Verification that chimney is properly lined and sized per the
applicable codes. (Refer to list of codes in Safety Consider-
ations section.)
Masonry Chimneys
This furnace can be vented into an existing masonry chimney. This
furnace must not be vented into a chimney servicing a solid fuel
burning appliance. Before venting furnace into a chimney, the
chimney MUST be checked for deterioration and repaired if
necessary. The chimney must be properly lined and sized per local
or national codes.
If furnace is vented into a common chimney, the chimney must be
of sufficient area to accommodate the total flue products of all
appliances vented into chimney.
The following requirements are provided for a safe venting
system:
1. Be sure that chimney flue is clear of any dirt or debris.
2. Be sure that chimney is not servicing an open fireplace.
3. Never reduce pipe size below the outlet size of furnace. (See
Fig. 2.)
4. All pipe should be supported using proper clamps and/or
straps. These supports should be at least every 4 ft.
5. All horizontal runs of pipe should have at least 1/4 in. per ft of
upward slope.
6. All runs of pipe should be as short as possible with as few
turns as possible.
7. Seams should be tightly joined and checked for leaks.
8. The flue pipe must not extend into chimney but be flush with
inside wall.
9. The chimney must extend 3 ft above highest point where it
passes through the roof of a building and at least 2 ft higher
than any portion of a building within a horizontal distance of
10 ft. It shall also be extended at least 5 ft above highest
connected equipment flue collar.
10. Check local codes for any variance.
Factory-Built Chimneys
Listed factory-built chimneys may be used. Refer to chimney
manufacturer's instructions for proper installation.

OIL BURNER

This furnace is supplied with a high-pressure atomizing retention
head-type burner (for use with grade 1 or 2 fuel oil). The Riello oil
burner operates with a prepurge period of 10 sec and a safety
timing of 5 sec. The burner flange is factory installed for an
insertion length of 3-3/4-in. The oil pump is set to operate on a
single line system. To operate on a two-line system the by-pass
plug must be installed.

OIL CONNECTIONS

UNIT DAMAGE HAZARD
Failure to follow this caution may result in unit component
damage.
This burner is shipped with the oil pump set to operate on a
single line system. To operate on a two-line system the
by-pass plug must be installed. Do not operate a single line
system with the by-pass plug installed. Operating a single line
system with the by-pass plug installed will result in damage to
the pump shaft seal. Pump pressure must be set at time of
burner start-up. A pressure gauge is attached to the PRES-
SURE PORT for pressure readings. Two PIPE CONNEC-
TORS are supplied with the burner for connection lines to
burner pipe connectors. All pump port threads are British
Parallel Thread design. Direct connection of NPT threads to
the pump will damage the pump body. Riello manometers
and vacuum gauges do not require any adapters, and can be
safely connected to the pump ports. An NPT (metric) adapter
must be used when connecting other gauge models.
Complete instructions for installing fuel oil piping can be found in
oil burner Installation Instructions included with furnace.
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