Slant/Fin EC-20 Installation
EUTECTIC EC-20
OIL-FIRED WATER BOILERS/NO. 2 OIL
INSTALLATION AND OPERATING INSTRUCTIONS
SAFETY WARNING:
KEEP BOILER AREA CLEAR AND FREE FROM COMBUSTIBLE MATERIALS, GASOLINE AND OTHER FLAMMABLE VAPORS AND LIQUIDS. FAILURE TO ADHERE TO
ABOVE SAFETY WARNING, MAY RESULT IN PERSONAL
INJURY OR DEATH AND PROPERTY DAMAGE.
CONTENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PAGE
Ratings and Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Installation Requirements:
Boiler Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Clearances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Chimney Requirements . . . . . . . . . . . . . . . . . . . . . . . . . .3
Air Supply and Venting . . . . . . . . . . . . . . . . . . . . . . . . .3-5
Controls and Accessories . . . . . . . . . . . . . . . . . . . . . . . . .6
Piping for Water Units . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Installing Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Oil Supply Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Wiring the Boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Vent Piping and Draft Regulator . . . . . . . . . . . . . . . . . . . .7
Operating Instructions:
Precautions Before Starting . . . . . . . . . . . . . . . . . . . . . . .7
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8-12
Cleaning and Filling New Water Boiler . . . . . . . . . . . . . . . .13
Care and Maintenance:
Extended Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Freezing Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Oil Burner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
General Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Burner Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15-16
IMPORTANT: The installation of this equipment must conform to the requirements of the authority having jurisdiction
or, in the absence of such requirements, to the Installation of
Oil Burning Equipment, ANSI/NFPA 31, latest edition, and to
the National Electrical Code ANSI/NFPA 70, latest edition.
The installation must also conform to the additional requirements in this Slant/Fin Instruction Manual. Where there is any
difference, the more stringent requirement shall govern.
In addition, where required by the authority having jurisdiction,
the installation must conform to American Society of Mechanical
Engineers Safety Code for Controls and Safety Devices for
Automatically Fired Boilers, No. CSD-1, latest edition.
THIS MANUAL MUST BE LEFT WITH OWNER AND
SHOULD BE HUNG ON OR ADJACENT TO THE BOILER
FOR REFERENCE.
IMPORTANT: This boiler must be installed, serviced and
repaired by a trained, experienced, service technician,
licensed for the installation and servicing of oil burning hot
water heating system equipment or otherwise qualified by the
authorities having jurisdiction over the installation.
Printed in U.S.A. 1113 Publication No. EC-20-40 Rev.A
Part No. 470910000
SERVICE COMPANY
Name ______________________________
Address_____________________________
___________________________________
Telephone ___________________________
Model # _____________________________
Serial # _____________________________
EUTECTIC EC-20
2
Maximum operating pressure 60 psi.
All boilers hydrostatically tested — A.S.M.E.
* For forced hot water heating systems where the boiler and all piping are
located within the area to be heated, the boiler may be selected on the basis
of D.O.E. capacity output. The net AHRI output ratings shown are based on
an allowance for piping and pickup of 1.15 (water). D.O.E. capacity output is
divided by the allowance to obtain net rating. The Slant/Fin Technical Service
department should be consulted before selecting a boiler for unusual piping
and pickup requirements such as intermittent system operation, extensive
piping, etc.
† Ratings apply to the use of light oil at 140,000 Btu per gallon and apply only
when burner models listed on page 12 of this manual are used, and are
properly adjusted to produce 13% CO2.
# All dimensions subject to normal manufacturing tolerance.
NOTE: All boilers under 300,000 Btuh (87.9 kw) input are tested and rated for
capacity under the U.S. Department of Energy (D.O.E.) Test Procedures for
Boilers.
TABLE 1: Ratings and Dimensions
EC-25 1.55 217,000 190 165 6 x 15 86.5 N/A 32-9/16 35-3/8 46-3/8 6 20 2
EC-26 1.90 266,000 232 202 7 x 15 86.5 N/A 37-9/16 40-3/8 51-3/8 7 25 2
EC-27 2.25 315,000 269 234 7 x 15 N/A 85.3 42-9/16 45-3/8 56-3/8 7 30 2
EC-28 2.50 350,000 298 259 7 x 15 N/A 85.3 47-9/16 50-3/8 61-3/8 7 35 2
BOILER
MODEL
NO.
GPH BTUH
AHRI
BURNER
CAPACITY
OIL INPUT † §
D.O.E.
HEATING
CAPACITY
MBH *
WATER
APPROX.
OVERALL
LENGTH
“A”
THERMAL
EFF. (%)
AHRI
WATER
NET
RATING
MBH *
AHRI
CHIMNEY SIZE
DIMENSIONS (inches) #
I.D. ROUND
X HEIGHT
(in x ft)
AFUE
%
BOILER
LENGTH
“B”
BOILER
LENGTH
“C”
FLUE
DIA.
“D”
DISTANCE
BETWEEN
LEGS
“E”
FLUE
OUTLET
LENGTH
“F”
Figure 1: Dimensions
1-1/2”
NPT
Supply
Automatic
Air Vent
Air Eliminator
as per Manufacturer
Specifications
To Circ. (s)
and Zones
Suppy Pipe Mounted
Tridicator
A
D
1-1/2”
NPT
Return
3/4”
NPT
Drain
EUTECTIC EC-20
3
THE INSTALLATION INSTRUCTIONS IN THIS MANUAL ARE
ABBREVIATED. SEE THE FRONT COVER OF THIS MANUAL
FOR REFERENCES TO CODES AND STANDARDS. SEE
ASSEMBLY INSTRUCTIONS (Part No. 47091100)
BOILER LOCATION
Provide a level, solid foundation for the boiler. Location should
be near the chimney so that the Flue Pipe Connector or
Breeching to the chimney is short and direct.
A. The foundation must be capable of supporting the weight
of the boiler when filled with water:
* Includes burner, circulator and controls
B. The EC-20 Boiler has full wet base sections which sur-
round fire-box for maximum heat absorption of burning
fuel, and low floor temperature.
C. If boiler is to be located over buried conduit containing
electric wires or telephone cables, consult local codes or
the National Board of Fire Underwriters for specific requirements.
MINIMUM CLEARANCE
Provide accessibility clearance of 24" from surfaces requiring
servicing (top and front) and 18" on any side requiring passage. The boiler shall be installed with the following MINIMUM
clearances from combustible materials:
A. CHIMNEY CONNECTOR-18"
B. BACK AND SIDES- 6" EXCEPT as limited by 18" clear-
ance from chimney connector
NOTE: Except in closets and alcoves, clearances above in (A)
and (B) may be reduced by providing forms of protection as
specified in NFPA 31, latest edition.
CHIMNEY REQUIREMENTS (see NFPA 211, latest edition)
A. The chimney must be constructed in accordance with all
local applicable codes and the National Board of Fire
Underwriters. See boiler models and rating table shown on
page 2 for chimney sizes.
B. Check chimney condition.
Existing chimneys and stacks may have deteriorated; without repairs their use would be hazardous. Before connecting to an old chimney or stack:
1. Clean it.
2. Inspect it thoroughly.
3. Remove obstructions.
4. Replace worn sections of metal stacks.
5. Seal bad masonry joints.
6. Repair damaged lining.
C. Breeching area must not be reduced at connection into
chimney. Breeching must be inserted into, but not beyond,
inside of chimney liner.
D. Chimney height shall extend at least 3 feet above where it
passes through the roof of the building, and at least 2 feet
above any ridge within 10 feet of the chimney.
E. The use of a vent cap, where permitted by code, gives
additional protection against adverse wind conditions and
precipitation.
F. Flue Connection: Connect flue pipe between back of boiler
and chimney. Horizontal sections of flue pipe must be
pitched upward to the chimney at least 1/4" per foot. Flue
must be inserted into, but not extend beyond, the inside
wall of the chimney flue. Draft regulator is not required but
may be installed if conditions warrant it. Install draft regulator in flue pipe, as shown in figure 2.
AIR SUPPLY AND VENTILATION (see NFPA 31, latest edition)
Sufficient air for combustion and ventilation in the boiler room
must be provided. Failure to do this will result in poor combustion, heavy sooting and health hazards. Any oil-fired boiler
must have a steady draft* and an ample supply of combustion
air at all times during firing. If air supply or chimney draft* is
CHIMNEY
BOILERBOILER
PITCH UP
1/4" PER LINEAR FOOT
DO NOT INSTALL DRAFT REGULATOR HERE
BAROMETRIC DRAFT CONTROL
INSTALLED ON VERTICAL RISE
18"
MINIMUM
9"
PITCH UP
1/4" PER
LINEAR FOOT
BAROMETRIC DRAFT CONTROL
INSTALLED ON HORIZONTAL
CONNECTOR
DRILL 1/4" HOLE TO MEASURE
DRAFT,SMOKE,CO % AND STACK
TEMPERATURE
DO NOT INSTALL DRAFT REGULATOR HERE
9"
18"
MINIMUM
2
DRILL 1/4" HOLE TO MEASURE
DRAFT,SMOKE,CO % AND STACK
TEMPERATURE
2
CHIMNEY
Boiler Approximate Total Weight of Boiler
Size Assembly*, filled with water
EC-25 701
EC-26 815
EC-27 906
EC-28 1,008
Figure 2.
Barometric Draft
Regulator
Location
EUTECTIC EC-20
4
unreliable, CO2and overfire draft* will change unpredictably.
DO NOT vent this boiler to the same chimney flue used by a
fireplace or coal or wood burning furnace or boiler. The draft*
produced by solid fueled devices varies tremendously
between high fire and low fire:
In modern, weather stripped, energy-saving buildings or older
buildings which have been modified similarly, natural infiltration may not supply enough air for combustion, particularly if
other fuel burning appliances, exhaust fans or draft inducers
are competing for the same air supply. Fireplaces, other solid
fuel burning appliances and exhaust fans consume great
quantities of air; if air supply is not ample, such an appliance
will create a downdraft in the oil-fired boiler flue. This can create a hazardous condition. Flue gases can be sucked out of
the chimney through the vent regulator into the living space.
DO NOT operate this boiler and a solid fuel burning appliance
at the same time, unless the solid fuel burner is provided with
its own outside air supply.
See Table 2, “Provisions for Combustion and Ventilation Air
Supply” for determining need and method of providing air for
combustion and ventilation.
If fly screen must be used over air supply openings, areas calculated should be doubled; the screen should be inspected
and cleaned frequently to maintain free air flow.
Protect air openings against closure by snow, debris, etc.
Openings such as doors or windows, if used, must be locked
open.
TABLE 2: Provisions for Combustion and Ventilation Air Supply. See NFPA 31, latest edition for more detailed information.
Boiler Location Air Supply
2.1 Unconfined space Is there sufficient air for combustion by natural infiltration (see
NOTE (1), “Test...” below)?
2.2 Unconfined space If there is NOT sufficient air for
combustion by natural infiltration
due to tight construction or other
conditions, then it REQUIRES AIR
FROM OUTDOORS. SEE
“ACTION REQUIRED” column at
right. See Notes (1) and (2) below.
2.3 Confined space If there is sufficient air for combustion from within building but it
comes from outside of the
confined space, see “ACTION
REQUIRED” column at right.
See Note (1) below.
2.4 Confined space If there is NOT sufficient air for
combustion due to tight construction or other conditions it
REQUIRES AIR FROM OUTDOORS. SEE “ACTION
REQUIRED” column at right.
See NOTE (2) below.
Action Required
NONE
Provide air from outdoors directly through a permanent outside wall opening or openings with a free open area of not
less than 1 sq. in. per 4000 Btu/hr of TOTAL input of ALL fuel
burning appliances in the building. See Note (1) and (3).
The confined space shall be provided with two permanent air
openings, one near the top of the enclosure and one near the
bottom. EACH opening shall have a free air opening of not
less than 1 sq. in. per 1000 Btu/hr. of TOTAL input of ALL fuel
burning appliances within the enclosure. The two openings
shall freely communicate with the interior areas of the building
which in turn would have to have adequate infiltration of air
from outdoors. See Notes (1, 3) and Figure 3a.
(a) Air from the outdoors shall be provided to the confined
space by two permanent openings, one in or near the top
of the enclosure space and one in or near the bottom. The
openings shall communicate directly, or by means of
ducts, with outdoors or to such spaces (crawl or attic) that
freely communicate with outdoors (See figures 3b, 3c
and 3d).
(b) Where directly communicating with outdoors or by means
of vertical ducts, each opening shall have a free area of
not less than 1 sq. in. per 4,000 Btu/hr. (35 sq. in. per gal.
per hr.) of total input rating of all appliances in the enclosure. If horizontal ducts are used, each opening shall have
a free area of not less than 1 sq. in. per 2,000 Btu/hr. (70
sq. in. per gal. per hr.) of total input of all appliances in the
confined space. See Figures 3b, 3c and 3d.
(1) Test for sufficient air for combustion by infiltration by running this boiler for 30 minutes under all of the following conditions and at the same time: a) all doors, win-
dows and other like openings must be closed, b) all fuel burning appliances should be FIRING, c) all exhaust fans and clothes dryers turned ON. At the above
conditions the CO2, smoke and draft readings must be normal. (CO2between 11% and 13%, smoke between ZERO and a TRACE, draft between .02” W.C. and
.04” W.C. negative pressure.)
(2) Aside from tight construction, some of the conditions that steal air for combustion from a boiler are other fuel burning appliances, exhaust fans and clothes dryers.
(3) Generally, louvers made of wood have a free open area of 20% and those made of metal have a 60% to 70% free open area. Screens also reduce the open area
of the louvers. Fly screen can reduce air opening by 50%.
* Draft is negative or suction pressure
EUTECTIC EC-20
5
6 IN.
MAX.
12 IN
MAX
CHIMNEY
6 IN.
MAX.
12 IN
MAX
CHIMNEY
CHIMNEY
CHIMNEY
Figure 3a.
Appliances located in confined spaces. Air from
inside the building. See Table 2 (2.3).
Figure 3b.
Appliances located in confined spaces. Air from outdoors. See Table 2 (2.4).
Figure 3c.
Appliances located in confined spaces. Air from outdoors through ventilated attic. See Table 2 (2.4).
Figure 3d.
Appliances located in confined spaces. All air from
outdoors through ventilated crawl space and outlet
air to ventilated attic. See Table 2 (2.4).
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