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DUCT WORK RECOMMENDATIONS

When supply ducts carry air circulated by furnace to areas
outside spaces containing furnace, return air MUST also be
handled by a duct sealed to furnace casing and terminating
outside space containing furnace. Incorrect duct work termi-
nation and sealing will create a hazardous condition which
could lead to bodily harm.

Return-air grilles and warm air registers MUST NOT be
obstructed. Failure to follow this caution will result in
premature failure of the heat exchanger.

The proper sizing of warm air ducts is necessary to ensure
satisfactory furnace operation. Duct work should be in accordance
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.

Table 5-Combustion Air From

Outdoors Through Vertical Ducts

58CLA FURNACE

INPUT BTUH

FREE AREA PER

OPENING

(SQ IN.)

ROUND PIPE

(IN. DIAM)

70,000

17.5

5

91,000

22.8

6

105,000

26.3

6

119,000

29.8

6

140,000

35.0

6

154,000

38.5

6

Table 6-Combustion Air From Outdoors

Through Horizontal Ducts

58CLA FURNACE

INPUT BTUH

FREE AREA PER OPENING

(SQ IN.)

ROUND PIPE

(IN. DIAM)

70,000

35.0

7

91,000

45.5

8

105,000

52.5

9

119,000

59.5

9

140,000

70.0

10

154,000

77.0

10

5

Содержание 1-58CLA

Страница 1: ...OF VAPOR OR WHEN THE COMBUSTION CHAMBER IS VERY HOT For use with grade 1 or 2 Fuel Oil Do not use Gasoline Crankcase Oil or any Oil containing Gasoline Failure to follow this warning could lead to sooting fire explosion and or severe bodily harm Never burn garbage or paper in the heating system and never leave rags paper or any flammable items around the unit Failure to follow this caution will re...

Страница 2: ...ult in minor personal injury or product and property damage NOTE is used to highlight suggestions which will result in enhanced installation reliability or operation INTRODUCTION The model 58CLA Furnaces are available in 2 sizes Each size unit can be fired at 3 different rates by a simple nozzle change Unit 105 12 covers input ranges from 91 000 to 105 000 Btuh unit 120 20 covers input ranges from...

Страница 3: ...amper is in full cool or heat position INSTALLATION Step 1 Air for Combustion and Ventilation Installation of this furnace in an area where it will receive contaminated combustion air must be avoided Such contami nation would include the following ammonia chlorine hydrogen sulfide halogenated hydrocarbons carbon tetra chloride cleaning solvents hydrochloric acid water soften ing chemicals and simi...

Страница 4: ...hould be located about 6 in from top and bottom of enclosure at front of furnace See Table 3 NOTE In calculating free area consideration shall be given to blocking effect of louvers grilles or screens protecting openings Screens used shall not be smaller than 1 4 in mesh and shall be readily accessible for cleaning If free area through a design of louver or grille is known it shall be used in calc...

Страница 5: ...efer 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 Inspectio...

Страница 6: ...al Code CSA C22 1 or subauthorities having jurisdiction Do not connect aluminum wire between disconnect switch and furnace Use only copper wire Failure to follow this caution will lead to intermittent electrical operation and or fire hazard The control system depends on correct polarity of power supply Connect HOT wire H and NEUTRAL wire N as shown in Fig 3 or 4 A separate line voltage supply MUST...

Страница 7: ...required to determine thermal efficiency of fur nace 6 An oil filter should be installed as close to burner as possible with ALL oil burners and is essential on lower firing rate burners We recommend the use of a low pressure drop oil filter such as the General Filter Inc model 1A 25A or equivalent 7 The oil pressure regulator is factory set to give oil pressure of 130 psig for the model having 10...

Страница 8: ...Fig 3 Wiring Diagram For 105 12 A03164 X04031 Rev A 8 ...

Страница 9: ...Fig 4 Wiring Diagram For 120 20 A03165 X04032 Rev A 9 ...

Страница 10: ...o keep this furnace in good operating condition and to maintain its warranty the furnace MUST be serviced on an annual basis This servicing includes a nozzle change a burner inspection a visual check of tube passages through flue outlet and cleanout ports and a visual inspection of combustion chamber when burner is removed Depending on above inspection service could also include a cleaning and vac...

Страница 11: ...ed 8 After cleaning replace flue silencer flue collar and oil burner 9 Readjust burner for proper operation Step 4 Blower Removal To remove blower from furnace 1 Turn off all oil and electrical supplies upstream of furnace 2 Remove blower access door 3 Remove air filters 4 Remove blower retaining wing nuts 5 Slide blower on rails toward rear of unit 6 Reverse items 1 through 5 to reinstall blower ...

Страница 12: ...31 58cla5si Manufacturer reserves the right to discontinue or change at any time specifications or designs without notice and without incurring obligations Book 1 4 Tab 6a 8a PC 101 Catalog No 535 80122 Printed in U S A Form 58CLA 5SI Pg 12 11 03 Replaces 58CLA 4SI ...

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