ECR DUNKIRK ESC3100 Instruction manual

P/N 240007514, Rev. F [03/2011]
ESC STEAM
OIL-FIRED CAST IRON BOILER
INSTALLATION, OPERATION &
MAINTENANCE MANUAL
An ISO 9001-2008 Certified Company
DUNKIRK BOILERS
2201 Dwyer Ave.
Utica, NY 13051
www.ecrinternational.com
MODEL NUMBERS:
ESC3100, ESC4100,
ESC4125, ESC4150,
ESC5175, ESC5200,
ESC6225, ESC7275
PATENT 7,823,544

2
KEEP THIS MANUAL NEAR BOILER
RETAIN FOR FUTURE REFERENCE
SAFETY SYMBOLS
IMPORTANT: Read the following instructions
COMPLETELY before installing!!
TABLE OF CONTENTS
H
Tested For 15 psi.
ASME
Working Pressure
The following dened symbols are used throughout this
manual to notify the reader of potential hazards of varying
risk levels.
INSTALLATION MANUAL AND OPERATING INSTRUCTIONS
Ratings, Data, And Dimensions........................ 3
Installation Procedure....................................... 4
Ventilation And Combustion Air ........................ 5
Connecting Supply And Return Piping ............. 7
Venting System Inspection & Installation.......... 8
Oil Tank And Piping .......................................... 8
Electrical Wiring................................................ 9
Thermostat Installation .....................................9
Normal Sequence Of Operation ..................... 13
Operating Instructions .................................... 13
Maintenance Procedures................................ 15
Service Checklist............................................17
Replacement Parts.........................................18
!
WARNING
Indicates a hazardous situation which, if not
avoided, could result in death or serious injury.
NOTICE
Indicates information which should be followed
to ensure proper installation and operation.
!
CAUTION
Indicates a hazardous situation which, if not
avoided, may result in minor or moderate
injury.
!
DANGER
Indicates a hazardous situation which, if not
avoided, WILL result in death or serious injury.
!
WARNING
1. Keep boiler area clear and free from
combustible materials, gasoline and
other ammable vapors and liquids.
2. DO NOT obstruct air openings to the
boiler room.
3. Modication, substitution or elimination
of factory equipped, supplied or specied
components may result in property
damage, personal injury or the loss of
life.
4. TO THE OWNER - Installation and
service of this boiler must be performed
by a qualied installer.
5. TO THE INSTALLER - Leave all
instructions with the boiler for future
reference.
6. When this product is installed in the
Commonwealth of Massachusetts the
installation must be performed by a
Licensed Plumber or Licensed Gas
Fitter.
!
WARNING
All installations of boilers and venting
should be done only by qualied expert
and in accordance with this manual.
Installing or venting a boiler or any other
gas appliance with improper methods
or materials may result in serious injury
or death due to re or to asphyxiation
from poisonous gases such as carbon
monoxide which is odorless and
invisible.
PATENT 7,823,544

3
Boiler Model
Number(1)
I=B=R Oil Burner
Input(2) Output
MBH(4)(9)
I=B=R Net Ratings(3)(4) Min. Natural Draft
Chimney Size Pump
Pressure
PSI
Nozzle
Furnished
140PSIG(5)
A.F.U.E.
Rating
G.P.H. MBH(4) Steam
MBH Sq. Ft.
Steam Round Square
365S 0.65 91 79 59 246 6 8x8x15 140 .60 80B 85
3100S 1.00 140 116 87 363 6 8x8x15 140 .85 80B 81.5
4100S 1.00 140 120 91 377 7 8x8x15 140 .85 80B 85
4125S 1.25 175 145 109 454 7 8x8x15 140 1.10 60B 82.5
4150S 1.50 210 170 128 533 7 8x8x15 140 1.25 80B 81
5175S 1.75 245 202 152 633 8 8x8x15 140 1.50 80B H 83
5200S 2.00 280 227 170 708 8 8x8x15 140 1.75 70B H 82
6225S 2.25 315 251 188 783 8 8x12x15 140 2.00 45B -
7275S 2.75 385 307 230 958 8 8x12x15 140 2.25 60B -
NOTES:
1. Add sufx "T" to denote boiler with tankless heater.
2. I=B=R burner capacity is based on an oil heating value of 140,000 Btu/gal. and with 13% CO2.
3. Net I=B=R Steam Ratings based on piping and pick-up allowance of 1.333. Consult manufacturer for unusual piping and pick-up temperatures.
4. For altitudes above 2,000 ft. ratings maybe reduced at the rate of 4% for every 1,000 ft. above sea level.
5. Nozzle sizes with an H designation are Hago brand, all others are Delavan.
6. Electrical service is 120 Volts, 15 Amps, 60 Hz.
7. MEA number for this boiler series is 182-86E.
8. MEA number for the AFG Beckett Burner used in this boiler series are;
AF/156-77-E, AFG/213-83-E, AFII 85/24-92-E, AFII 150/ 456-90-E.
9. Output is "Heating Capacity," for units with input <300 Mbh and "Gross Output"
for units ≥300 Mbh.
RATINGS, DATA, AND DIMENSIONS
STANDARD EQUIPMENT: Crated boiler, ush jacket, oil burner, target
wall/liner, ASME relief valve, steam water level gauge, steam pressure
gauge, steam pressure control, mechanical low water cut-off, drain valve,
wiring harness, burner electric disconnect, plastic cover, 2" supply tapping,
1½" return tapping, skim port, and primary control.
(NOTE: For tankless heater units, add tankless hot water coil, and 4006
limit control.)
DIMENSIONS (See Figure A)
Boiler No. Length of Flush
Jacket
Front of Jacket to
Center Line of Flue
Outlet
Flue Outlet Diam-
eter
-A- -B- -C-
3S 16.375" 6.5" 6.0"
4S 20.25" 8.5" 6.0"
5S 23.875" 10.25" 7.0"
6S 27.5" 8.3125" 8.0"
7S 31.125" 8.3125" 8.0"
TANKLESS WATER HEATER CAPACITIES
Boiler Model
Number
Firing
Rate
G.P.H.
Tankless
Heater
Number
Tankless Heater Capac-
ity Intermittent Draw
G.P.M.
Boiler Water Content
(Gallons)
To Water
Line To LWCO Line
365S 0.65 L-24 Available on request 11 8
3100S 1.00 L-24 4.5 11 8
4100S 1.00 L-24 4.5 13 9
4125S 1.25 L-24 4.5 13 9
4150S 1.50 L-24 4.5 13 9
5175S 1.75 L-24 5.0 15 10
5200S 2.00 L-24 5.0 15 10
6225S 2.25 L-24 5.0 17 11
7275S 2.75 L-24 5.0 19 12
Figure #1

4
INSTALLATION PROCEDURE
replacement of another appliance such as a water heater.
The boiler shall be installed such that the oil ignition system
components are protected from water (dripping, spraying,
rain etc.) during appliance operation and service.
FOR INSTALLATION ON NON-COMBUSTIBLE FLOORS
ONLY - The boiler must not be installed on carpeting
or vinyl ooring. Minimum clearances to combustible
construction are:
TOP 24 IN.
FRONT 24 IN.
FLUE CONNECTOR 9 IN.
REAR 24 IN.
LEFT SIDE 6 IN.
RIGHT SIDE 24IN.
NOTE: Clearance for access should exceed fire protection
clearance.
All installations must conform to the requirements of the
authority having jurisdiction. Such applicable requirements
take precedence over the general instructions of this
manual.
Where required by the authority having jurisdiction, the
installation must conform to the American Society of
Mechanical Engineers Safety Code for Controls and Safety
Devices for Automatically Fired Boilers, ANSI/ASME No.
CSD-1.
Locate boiler in front of nal position before removing crate.
Provide a level solid base as near chimney as possible and
centrally located with respect to the heat distribution system
as practical.
!
WARNING
Boiler may not be installed on combustible
ooring.
Allow 24 inches in the front, top and right hand side for
servicing and cleaning, or removing tankless water heating
coil.
It is recommended that 24 inches be allowed in back of
boiler for convenience when skimming hole is used.
When installed in a utility room, the door should be wide
enough to allow the largest boiler part to enter, or to permit
Minimum clearances to combustible
construction (as seen from above)
6" 24"
24"
BOILER
24"
!
WARNING
Improper installation, adjustment,
alteration, service or maintenance can
cause injury or property damage.
Figure #2

5
VENTILATION AND COMBUSTION AIR
Ventilation of boiler room must be adequate enough to 1.
provide sufcient air to properly support combustion,
venting and maintain safe ambient temperatures under
normal operating conditions.
When the boiler is located in an unconned space in a 2.
building of conventional construction frame, masonry
or metal, inltration normally is adequate to provide
air for combustion and ventilation. However, in any
building which has been altered to conserve energy
or to minimize inltration, the boiler area should
be considered as a conned space. If there is any
doubt, install air supply provisions for combustion
and ventilation in accordance with Chapter 5, Air for
Combustion and Ventilation, of NFPA 31, Standard
for the Installation of Oil Burning Equipment. The
recommendations that follow, or applicable provisions
of the local building codes.
When the boiler is installed in an unconned space, 3.
in a building of unusually tight construction, air for
combustion and room ventilation must be obtained from
outdoors or from spaces freely communicating with the
outdoors. A permanent opening or openings having a
total free area of not less than 1 square inch per 5,000
BTU per hour of total input rating of all appliances shall
be provided. Ducts may be used to convey make-up
air from the outdoors and shall have the same cross-
sectional area of the openings to which they are
connected.
When air for combustion and room ventilation is from
4.
inside buildings, the conned space shall be provided
with two permanent openings, one starting 12 inches
from the top and one 12 inches from the bottom of the
enclosed space. Each opening shall have a minimum
free area of 1 square inch per 1,000 BTU per hour of
the total input rating of all appliances in the enclosed
space, but must not be less than 100 square inches.
These openings must freely communicate with the
interior areas having adequate inltration from the
outside. See Figure #3.
COMBUSTION AIR REQUIREMENTS
(Minimum Opening Requirement)
BTU/Hr Input
Unconned Area* Conned Area**
Outside Inside Outside Combustion Air
Combustion Air 1 Sq.
In./5000 BTU/Hr
(Step 4)
Combustion Air 1 Sq.
In./1000 BTU/Hr
(Min. 100 Sq. In.) (Figure #1)
Vertical Ducts 1 Sq. In./4000 BTU/
Hr (Figures # 2 & #3)
Horizontal Ducts 1 Sq. In./2000
BTU/Hr (Figure # 4)
91,000 19 100 23 46
140,000 28 140 35 70
175,000 35 175 44 88
210,000 42 210 53 106
245,000 49 245 61 122
280,000 56 280 61 140
* A space whose volume is not less than 50 cubic feet per 1000 BTU/Hour of all appliances installed in that space (cubic feet of space = height x width x length)
** A space whose volume is less than 50 cubic feet per 1000 BTU/Hour of all appliances installed in that space (cubic feet of space = height x width x length)
VENTS
CHIMNEY
OR
L TYPE VENT PIPE
VENT PIPE
BASEBOARD
12"
12"
!
WARNING
Air openings to combustion area must not be obstructed. By following the instructions below,
adequate combustion air can be maintained.
Figure #3

6
When communicating with the outdoors by means of B.
vertical ducts, each opening shall have a minimum
free area 1 square inch per 4,000 BTU per hour of
total input rating of all appliances in the enclosed
space. (Figure #5)
If horizontal ducts are used, each opening shall have C.
a minimum free area 1 square inch per 2,000 BTU per
hour total input rating of all appliances in the enclosed
space. (Figure #6)
When ducts are used, they shall be of the same D. cross sectional area as the free area of the area of
the openings to which they connect. The minimum
dimension of rectangular air ducts shall not be less
than 3 inches.
In calculating free area using louvers, grills or screens 6.
for the above, consideration shall be given to their
blocking effect. Screens used shall not be smaller than
1/4 inch mesh. If the free area through a design of
louver or grill is known, it should be used in calculating
the size opening required to provide the free area
specied. If the design and free area is not known, it
may be assumed that wood louvers will have 20-25%
free area and metal louvers and grills will have 60-75%
free area. Louvers and grills shall be xed in the open
position or interlocked with the boiler so that they are
opened automatically during boiler operation.
When the boiler is installed in a conned space and 5.
all air is provided from the outdoors, the conned
space shall be provided with two permanent openings,
one commencing within 12 inches from the top and
one commencing 12 inches from the bottom of the
enclosure. The openings shall communicate directly,
or by ducts, with the outdoors or spaces (crawl or attic)
that freely communicate with the outdoors. One of the
following methods must be used to provide adequate
air for ventilation and combustion.
When directly communicating with the outdoors, each A.
opening shall have a minimum free area of 1 square
inch per 4,000 BTU per hour of total input rating of all
equipment in the enclosure. (Figure #4)
VENTILATION AND COMBUSTION AIR
Figure #4
Figure #5
Figure #6

7
CONNECTING SUPPLY AND RETURN PIPING
Suggested piping for steam heating system can be 1.
seen in Figure #7. Actual piping may vary based on
system design and local conditions.
For further piping information refer to the I=B=R
2.
installation piping guide.
See 3. Figure #8 for typical piping for domestic hot water
heater.
See 4. Figures #9 and #10 for the suggested piping for a
modular steam boiler.
SUGGESTED PIPING FOR MODULAR
STEAM BOILERS - PUMPED RETURN
CHECK
VALVE BLOWOFF
VALVE
SOLENOID
VALVE
(OPTIONAL)
F & T TRAPHIGH
LEVEL"SPILL"
(DO NOT USE WITH
CONDENSATE PUMP)
TO
RECEIVER
TANK
STEAM MAIN
TRAP
PUMPED RETURN
TO
SYSTEM
FROM
RECEIVER
TANK
FROM
RECEIVER
TANK
STOP
VALVE
TO
RECEIVER
TANK
STOP
VALVE
PIPING FOR BUILT-IN
DOMESTIC HOT WATER HEATER
PIPING FOR BUILT-IN
DOMESTIC
HOT WATER HEATER
COLD WATER IN
UNTEMPERED
HOT
FLO W
REGULATOR
TEMPERING VALVE
COLD WATER
DOMESTIC
HOT
WATER
T & P VALVE
UNTEMPERED HOT
WATER TO
AUTOMATIC WASHER
CONTROL
WATER
INSTALLED BELOW CENTER
LINE OF BOILER HOT
CONNECTION
SUGGESTED PIPING FOR MODULAR
STEAM BOILERS - GRAVITY RETURN
RETURN
GRAVITY RETURN
2"
TO
SYSTEM
STOP
VALVE
BLOWOFF
VALVE
STOP
VALVE
CHECK
VALVE
(OPTIONAL)
STEAM MAIN
WATER
LINE
28"
Figure #7
Figure #8
Figure #9
Figure #10

8
VENTING SYSTEM INSPECTION & INSTALLATION
RIDGE 2’ (.61 M) MIN.
MORE THAN 10’(3.1 M)
10’ (3.1 M)
HEIGHTABOVE ANY
ROOF SURFACE WITHIN
10’ (3.1 M)
HORIZONTALLY
CHIMNEY 3’ (.92 M)
GAS VENT OR
TYPE L VENT
2’ (.61 M) MIN.
If oil red water heater is vented into same ue as boiler,
provide separate hole into chimney whenever possible.
When this isn’t possible, use “Y” connection in ue pipe,
using separate draft regulator for each unit. When chimney
will not provide adequate draft to handle input from water
heater and boiler simultaneously, wire units so only one will
operate at a time, favoring water heater.
OIL TANK AND PIPING
Oil tank and piping should be installed in accordance with
National Board of Fire Underwriters and local regulations.
Oil storage tank, vent, ll pipe and caps should be as
prescribed by local codes. In no case should vent pipe be
smaller than 1¼" I.P.S. Fill pipe should not be less than 2"
I.P.S.
Ssuction line from tank to burner should be one continuous
piece of tubing to prevent air entering line. Suction line,
must be ⅜" O.D. copper tubing for runs of 50 feet or less,
and ½" O.D. for longer runs. Oil return line, same size as
suction line, must be used on any installation where bottom
of tank is below fuel unit of burner. Oil lines should be
buried or otherwise protected from mechanical injury. Flare
ttings on all oil lines are recommended. Compression
ttings on suction line often allow air to be drawn into fuel
pump, making it difcult to maintain oil pressure at nozzle.
Do not run overhead fuel lines from tank to oil burner.
!
WARNING
Boiler is to be vented by natural draft and
shall not be connected into any portion of
mechanical draft operating system under
positive pressure.
Inspect chimney to make certain it is constructed according
to the latest revision of the NFPA 211. Local regulations
may differ from this code and should be checked. Where
there is a conict, the local code will prevail.
The boiler must be installed into a chimney which has a
masonry or metallic chimney liner.
An unlined chimney will have leaks that will cause poor
chimney performance (no draft), and could result in a
positive pressure in the combustion chamber.
Horizontal portions of the venting system should not exceed
10 feet in length. Horizontal lengths over 10 ft. will have a
negative effect on the chimney performance.
The chimney should extend at least 2 ft. above any portion
of the building within 10 ft. (Figure #11)It should produce
a -.02 inch W.C. draft in the combustion chamber. See
"Chimney or Vent Sizes" chart for recommended minimum
and maximum chimney or vent sizes.
Inadequate draft will cause improper combustion, resulting
in dirty ue ways and high fuel bills.
Connect ue pipe same size as boiler outlet to chimney,
sloping upward continuously toward the chimney
approximately ¼" per foot. Bolt or screw joints together to
avoid sag.
CHIMNEY OR VENT SIZES
BTU/HR INPUT ROUND
INCHES SQUARE INCHES HEIGHT (FT)
MIN MAX MIN MAX MIN MAX
91,000 - 140,000 6 8 8x8 8x8 15 40
175,000 - 210,000 7 8 8x8 8x10 15 40
245,000 - 280,000 8 10 8x8 8x12 15 50
315,000 8 10 8x8 8x12 15 50
385,000 8 10 8x8 8x12 15 50
Figure #11

9
THERMOSTAT INSTALLATION
Fuel pump connections and by-pass should be made
according to instructions attached to the fuel pump. If
tank is more than 20' from the boiler, a two stage fuel
unit should be installed in place of the single stage pump
supplied as standard equipment with the burner. Make
certain the rotation and speed are the same and the pump
is suitable for the burner horsepower rating.
TYPICAL INSTALLATION
SINGLE PIPE OIL SYSTEM TYPICAL INSTALLATION TWO PIPE OIL SYSTEM
An oil line lter and shut-off valve should be installed in the
suction line. Shut-off valves should be installed in both the
suction and return lines at the burner for convenience in
servicing burner. Allow extra tubing at burner so burner may
be removed from boiler for cleaning without disconnecting
tubing. (Figures #12 - #13) An optional exible oil line is
available.
ELECTRICAL WIRING
Electrical wiring must conform with the latest revisions of
the National Electrical Code, ANSI/NFPA No. 70, and/or
local authority having jurisdiction.
When an external electrical source is utilized, the
1.
boiler, when installed, MUST BE electrically grounded
in accordance with these requirements.
OIL TANK AND PIPING
Install a fused disconnect switch between boiler and 2.
meter at a convenient location.
When the boiler is equipped with self-energized
3.
controls, no outside source of electric power shall be
connected to the circuit of this system. (See "Steam
Wiring" on next page.)
Thermostat should be installed on inside wall about
1.
four feet above oor.
NEVER 2. install thermostat on outside wall.
Do not install thermostat where it will be affected by 3.
drafts, hot or cold pipes, sunlight, lighting xtures,
television, replaces, or chimneys.
Check thermostat operation by raising and lowering
4.
thermostat as required to start and stop burner.
Instructions for nal adjustment of thermostat 5.
are packaged with thermostat (adjusting heating
anticipator, calibration, etc.).
Figure #12 Figure #13

10
COMPONENT CODING
TH-1 Thermostat (Millivolt) MR-PS Manual Reset Pressure Switch CIR Circulator
TH-2 Thermostat (24 Volt) Control Terminal ECO Energy Cut-Off
TH-3 Thermostat (Line Voltage) 1K Relay Coil PSC Pilot Safety Coil
TR-1 Transformer (120V/24V/40VA) 1K1 Relay Contacts Wire Connection
TR-2 Transformer (120V/24V/50VA) 1K2 Relay Contacts LWCO Low Water Cut Off
LGV24 Volt Gas Valve LS Limit Switch EWF Electric Water Feeder
PS Pressure Switch MS Manual Switch PG Power Generator
STEAM WIRING W/BECKETT BURNER
NOTE: Not all components listed are used in all control systems.
WIRING CODE
Line Voltage By Factory
Low Voltage By Factory
Line Voltage By Installer
Low Voltage By Installer

11
STEAM WIRING W/RIELLO BURNER
WIRING CODE
Line Voltage By Factory
Low Voltage By Factory
Line Voltage By Installer
Low Voltage By Installer

12
STEAM WIRING W/CARLIN BURNER
WIRING CODE
Line Voltage By Factory
Low Voltage By Factory
Line Voltage By Installer
Low Voltage By Installer

13
NORMAL SEQUENCE OF OPERATION
On a call for heat, the thermostat will actuate, completing
the circuit to the boiler. In turn, the ignition systems
are activated and ignition will begin.
In the event of a low water condition, an automatic low
water cut-off device will interrupted power between the low
water cut-off and the burner. The burner will remain off until
the low water condition is corrected, (i.e., manually restore
boiler water or utilize a water feeder device which will
automatically restore water to its normal operating level).
IMPORTANT TO THE INSTALLER - Before putting the Rell boiler to its normal water line.
boiler in operation, test the mechanical low water cut-off
device for proper operation. While burner is on, open the
blow-off valve located in the lower portion of the cut-off
body. This will drain the water quickly from the cut-off body
and break the circuit to the burner. If it does not, replace
control.
!
WARNING
Water will be boiling hot.
OPERATING INSTRUCTIONS
The venting system should be inspected at the start of each
heating season. Check the vent pipe from the boiler to the
chimney for signs of deterioration by rust or sagging joints.
Repair if necessary.
Remove the vent pipe at the base of the chimney or
ue and, using a mirror, check for obstruction and verify
compliance to the latest revision of the NFPA 211.
The lever of the pressure relief valve (Figure #14)on the
boiler should be operated periodically to make sure that it is
functioning properly.
MOUNTING
(BOTH SIDES)
LOWER FRONT
JACKET PANEL
PRESSURE RELIEF
VALVE TOP JACKET
PANEL
1/4" SLOT
BURNER
ELECTRICAL
DISCONNECT
28"
WATER
ELECTRONIC LOW
WATER CUT OFF
INSPECTION
COVER
LINE
SCREWS
HOT
The pressure relief valve should open before the steam
pressure exceeds the 15 lb. reading on the gauge. If this
pressure is exceeded and the pressure relief valve leaks
steam when the boiler is operating at normal pressures, it
should be immediately replaced. Corrosion can build up
rapidly at the valve seat and prevent its functioning as a
safety device.
START-UPAND ADJUSTMENT OF OIL BURNER
(See oil burner instructions for nozzle and electrode setting)
!
CAUTION
DO NOT SET FIRE VISUALLY.
Instruments are the only reliable method
to determine proper air adjustments.
An improperly adjusted burner causes
soot and high fuel bills because of
incomplete combustion of the fuel oil.
This in turn may require excessive
boiler maintenance, service costs, and
in some instances, house cleaning
or redecorating. A competent service
mechanic should be consulted to make
the proper adjustments with a smoke
tester, CO2indicator, and draft gauge.
Bacharach or Dwyer test kits
include these instruments.
Check oil burner nozzle to make certain it is tight in A.
adapter. Burner mounting bolts should be tight.
Check electrode setting, as they may have been jarred B.
!
WARNING
Discharge will be boiling hot water and
steam.
Figure #14

14
out of position during transportation.
Lubricate burner motor if necessary.C.
Set room thermostat to call for heat, or jump thermo-D.
stat contacts on the boiler control.
Open all oil line valves.E. Turn service switch on. Burner should start.F.
On one pipe fuel systems only, bleed pump as soon G.
as burner starts. Allow oil to run until all traces of air in
the suction line disappear.
Turn “OFF” burner and install pressure gauge port on H.
pump.
Start burner again and check oil pressure for 140 lbs. I. Adjust if necessary.
OPERATING INSTRUCTIONS
INSTRUCTIONS TO OBTAIN PROPER OPERATION OF
BOILER-BURNER UNIT A ¼" diameter slot
is provided in the inspection cover plate to
take draft readings in the combustion cham-
ber. (Figure #14) A ¼" diameter hole will be
required in the ue pipe between the boiler
and barometric damper (if used) to take
draft, CO2, smoke and temperature read-
ings. Adjust air shutter on oil burner to obtain
a “trace” of smoke. Measure CO2 at
this point. Increase air adjustment to
lower CO2 approximately one percent.
Check to insure minimum negative
.02 w.c., (water column), “overre”
draft and zero smoke. If -.02 w.c.
“overre” draft can not be maintained,
changes and/or modications may be
required in the vent-
ing or the chimney.
The following tables
are provided as a
guideline for ini-
tial start-up. Final
adjustments MUST
be made using
combustion instru-
ments as previously
mentioned.
IMPORTANT: Check safety control circuit after burner adjustments have been made for satisfactory performance.
RIELLO SETTINGS
Boiler
No. Burner No. Air Damper Pump
Press. Turb. Nozzle Fur- nished
3100 F-5 3.6 150 PSI 1 .85 80W
4125 F-5 4 150 PSI 3 1.10 60W
4150 F-5 6 150 PSI 4 1.25 60W
5200 F-10 5 150 PSI 0 1.75 80B
CARLIN SETTINGS
Boiler
No. Burner
No. Air Damper
Pump
Press. Head Bar Nozzle Fur-
nished
3100 EZ-1 0.85 150 PSI .85 - 1.00 .85 70B
4125 EZ-1 1.00 - 1.10 150 PSI 1.10 - 1.25 1.10 70B
4150 EZ-1 1.25 - 1.35 150 PSI 1.10 - 1.25 1.25 70B
5200 EZ-2 1.75 150 PSI 1.65 - 1.75 1.75 70B
BECKETT SETTINGS
Boiler
No. Burner No. Air
Damper Air Shut. Pump Press. Static Disc End Cone Nozzle Fur-
nished
3100 AFG 1 5 140 PSI 3 ⅜ U F3 .85 80B
4125 AFG 1 8 140 PSI 2 ¾" F4 1.10 60B
4150 AFG 2 6 140 PSI 2 ¾" F6 1.25 80B
5200 AFG 5 5 140 PSI 3U F12 1.75 70B H
6225 CF375 4 6 140 PSI L1 N/A 2.00 45B
7275 CF375 4 6 140 PSI L1 N/A 2.25 60B
NOTES:
(1) Model 6225 needs a head setting of 1 and 7275 needs a head setting of 2.
(2) Nozzle sizes with an H designation are Hago brand, all others are Delavan.
(3) Information in above table uses Beckett model AFG burner for model numbers 365-5200 and
Beckett model CF375 for model numbers 6225 and 7275.
Pressure Control - Remove cover and note pressure
A.
setting. With boiler operating, decrease the setting.
When the setting is lower than boiler pressure, the
control will open and turn off the boiler. After checking
pressure control, reset control to original setting.
Mechanical Low Water Cut-off - May be checked by
B.
opening the blow-off valve on the lower portion of the
cut-off body while the boiler is running. This will drain
the water from the boiler and break the circuit to the
burner.
!
WARNING
Water will be boiling hot.

15
It is recommended to replace the nozzle at the start of each
heating season. Lubricate the burner motor and circulator
motor - if required - with a few drops of a good grade of
light motor oil. Do not over oil. Have a competent service
person service the burner and check the controls and
check the electrodes for carbon or cracks in the insulators.
Burners should be adjusted to produce the conditions
shown in "Startup and Adjustment of Oil Burner."
CLOSING THE BURNER SWING DOOR
Swing burner and door to the right until insulation is 1.
slightly compressed and the stud is exposed.
Attach nut to the stud and tighten it until the built in stop 2.
contacts the mounting door.
Reconnect oil line to burner. 3.
Replace lower jacket panel, and tighten the screws. 4.
Connect the power cable at the factory supplied burner 5.
electrical disconnect.
Turn on power to boiler and bleed oil line. 6.
MAINTENANCE PROCEDURES
OPERATING INSTRUCTIONS
Before seasonal start up it is advisable to have a competent
service agency check the boiler for soot and scale in the
ues, change oil lter and nozzle, clean the burner and
readjust burner input rate to maintain proper operation and
high operating efciency.
On steam boilers make certain the boiler is lled to the
water line as indicated in Figure #14. The gauge cocks
should be normally open. To remove dirt from the gauge
glass the petcock may be opened to ush out the glass.
!
WARNING
Discharge may be boiling hot water.
The radiator valves on a one-pipe steam system must be
either wide open or tightly shut. Do not attempt to regulate
room temperature by partially closing the radiator valve.
Air vents on steam radiators and the supply main release
air from the system. If radiators do not heat satisfactorily,
make sure the air vents are clean and operational.
The lever of the pressure relief valve on the boiler (Figure
#14) should be operated periodically to make sure that it
is functioning properly.
Rell boiler to its normal water line.
C. Primary Control and Flame Sensor -
To Check:
Flame Failure
1. - simulate by shutting off oil supply with
hand valve while burner is on. Sixty seconds after ame-
out, the safety switch locks out, ignition stops, motor stops
and oil valve - when used - closes. To restart, open oil
supply valve and reset safety switch.
Ignition Failure 2. - With burner off, close oil supply valve
and run through start-up procedure, The safety switch
should lock out as in ame failure.
Power Failure 3. - Turn off main power supply switch while
burner is operating. When burner stops, restore power
and burner should start. If operation is not as described
as above, check wiring and controls.
Preventative maintenance of an oil red boiler reduces op-
erating costs. The boiler and vent pipe should be inspected
for accumulation of soot or scale deposits periodically but
at least once every year before the start of each heating
season. When soot is present on the section walls and u-
eways, improper combustion will result, causing additional
sooting and scaling until ueways are completely closed.
To remove soot and scale from the ueways, remove top
jacket panel, top clean-out plate, open burner swing door.
(Figure #14)
OPENING THE BURNER SWING DOOR
Turn off power to boiler and allow boiler to cool down. 1.
Disconnect power cable at factory supplied burner elec- 2.
trical disconnect. (Figure #14)
Loosen screws on the sides of the lower front jacket 3.
panel. (Figure 6) Pull the bottom part of the lower front
panel forward and lift the lower front panel up and off
the boiler. (Figure #14)
Close oil valve 4. (Figures #12 - #13)and disconnect oil
line from burner.
IMPORTANT: Do not open swing door with oil line
attached.
Remove nut from swing door stud on right hand side of 5.
door.
Swing open burner and door to the left. Using a ue 6.
brush, brush the soot and scale into the combustion
space where it can be removed through the swing door
opening.
!
CAUTION
Use caution when vacuuming in the
chamber area. Damage to chamber could
result.

16
MAINTENANCE PROCEDURES
Gradually raise hot water level to skimming hole (Figure #7)
installed on the rear section of the boiler being careful not to
raise it above the opening of the hole. Skim until there are no
impurities. Repeat the process if necessary.
Water may be checked to make sure it is free from oil by
drawing off a sample at the skimming hole. If the sample
is reasonably free from oil, it will not froth when boiled on
stove. This test does not indicate the amount of sediment
which may lay in the bottom of the boiler. It is therefore
necessary that the boiler be further cleaned by “blowing
down.”
BLOWING DOWN THE BOILER
Before blowing down the boiler, ll it to the water line. Turn
on burner and allow ve pounds of steam pressure to build
up. Run a temporary connection from one of the drain
valves to a nearby sewer. Connect to a drain valve on the
opposite end of the boiler from feed water inlet, if possible.
Shut off the oil burner, open drain valve and blow down the
entire contents of boiler.
Allow boiler to thoroughly cool and slowly rell to water line.
Repeat as many times as required until blow off water is
clear. Owner should blow down boiler at least once each
month of the heating season.
!
WARNING
Water will be boiling hot.
USING CLEANING COMPOUND
If an exceptional amount of dirt or sludge seems to be
present in the boiler, a boiler cleaning compound made by
a reputable manufacturer may be used according to the
instructions of the manufacturer of the compound. When
any type of cleaning compound is used, care must be taken
to thoroughly ush all traces of the compound out of the
boiler.
Following blow down allow the boiler to cool. Add fresh
water slowly. Be certain to blow enough times as required
to remove compounds from system.
The area around the boiler must be kept clear and free
of combustible materials, gasoline and other ammable
vapors and liquids.
The free ow of combustion and ventilation air to the boiler
and boiler room must not be restricted or blocked.
!
WARNING
Discharge will be boiling hot water and
steam.
The safety valve should open before the steam pressure
exceeds the 15 lb. reading on the gauge. (Figure #14)If
this pressure is exceeded and the safety valve does not
open, it must be replaced. If the safety valve leaks steam
when the boiler is operating at normal pressures, it should
be immediately replaced. Corrosion can build up rapidly
at the valve seat and prevent its functioning as a safety
device.
If the water in a steam boiler appears to be dirty or oily, or
the water level in the gauge glass uctuates considerably,
the boiler should be cleaned. A competent service person
will use approved cleaning compounds and properly
clean and ush out the boiler. He/she should also clean or
replace air vents and traps, clean ue passages and check
for proper operation of all controls and safety devices.
The venting system should be inspected at the start of each
heating season. Check the vent pipe from the boiler to the
chimney for signs of deterioration by rust or sagging joints.
Repair if necessary.
Impurities in boiler water of a steam boiler may cause
foaming and an unsteady water line, or prevent steam
generation. They may result in objectionable odors
escaping from the vents on water boilers. This condition
is caused by oil, grease, and sediment from pipe ttings
collecting within the boiler and can be remedied only by
giving the boiler a thorough cleaning.
BOILERS SHOULD BE CLEANED BY SKIMMING OR
BLOWING DOWN.
!
CAUTION
Boiler should not be left unattended during
the cleaning process.
SKIMMING OFF IMPURITIES
Some of the impurities in the boiler water will oat on the
water and must be skimmed off.
With the boiler empty and cool, slowly begin to add water.
After water has entered boiler - never before - turn “on”
oil burner and adjust water ow so that the water being
added is kept just below boiling point. Avoid boiling and
turbulence.

17
MAINTENANCE PROCEDURES
Periodic inspection and tightening of the tankless heater/cover
plate bolts will reduce the risk of leaks. See parts 3 and 5
under "Coil and Cover Plate Replacement Parts."
ELECTRONIC LOW WATER CUT-OFF
Operation of the probe and control should be checked, with
the burner on, by draining the water via the drain on the
bottom of the boiler. This will drain the water quickly from
the boiler and break the circuit to the burner. If it does not
inspect the probe for scaling. If scaling is present, clean off
the probe, rell the boiler until the ELWCO is satised, and
perform the check again.
SERVICE CHECKLIST
Inspect Chimney and Flue Pipe [ X ]
Inspect and Clean Appliance [ X ]
Inspect Oil Line - Size/Leaks [ X ]
Inspect Electrical Connections [ X ]
Install New Filter [ X ]
Room Make-up Air [ X ]
Electrode Setting [ X ]
Proper Light-Off (Hot & Cold) [ X ]
SERVICE RECORD
Date Nozzle Pump Pressure
PSI Line
Voltage Motor
Amps Smoke# Draft CO2
or O2
Flue
Temp °F
Size Angle Type O.F. INF
Controls and Safety Devices [ X ]
Nozzle-Size, Angle, Type [ * ]
Pump Pressure/Vacuum [ * ]
Line Voltage/Motor Amps [ * ]
Smoke Test [ * ]
Draft-Overre/In Flue [ * ]
CO2or O2 [ * ]
Flue Gas Temperature [ * ]
* Measure with instruments and record results below.
!
WARNING
Water will be boiling hot.
It is suggested that a qualied service agency be employed
to make an annual inspection of the boiler and heating
system. They are experienced in making the inspections
outlined above and, in the event repairs or corrections are
necessary, can make the proper changes for safe operation
of the boiler.

18
CONTROLS AND HARDWARE
REPLACEMENT PARTS
COIL AND COVER PLATE
ITEM PART NO. DESCRIPTION QTY.
1 HW-012.02 Bolt -
7
⁄16 -14 x 1½
Square Head
8
2 252-2-2.00 Gasket - B Tankless 1
3 202-2-1.00 Cover Plate - B Tank-
less Coil 1
4HW-013.01
Nut
7
⁄16 - 14 Square 8
5 252-3-1.02 Tankless Coil L - 24 1
6 1635001 Well ¾ x 1½ - 123870A 1
7 275-1-1.00 Harness 1
8 AQ-008.00 Control - L4006A1827 1
ITEM PART NO. DESCRIPTION QTY
1 PF-033.02 NPL,1/2x4NPT,BRS 2
2 14693052 CPLG,BRS,1/2 2
3GA-004.00 GAUGE WATER LEVEL 1
4 240007394 BRASS,SIPHON,OFF
CENTER,LOOP,62208 1
5 14693057 TEE BRASS 1/4” 1
6 240007412 PIPE,BRASS,1/4”x3” 1
7 240007411 ELB,BRASS,1/4”,90,STREET 2
8GA-003.00 GAUGE PRESSURE (STEAM) 1
9 240007160 ELWCO,CG450-P-2060,CYCLE
GUARD 1
10 SS-001.01 PRESSURE SWITCH PA404A-1009 1
11 1263012 HARN,J-BOX,22” (BECKETT &
RIELLO) 1
240007185 HARN,J-BOX,STEAM, CARLIN
12 240007187 HARN,BRNR,STEAM, BECKETT 11263011 BURNER HARNESS 8” RIELLO
240007186 HARN,BRNR,STEAM, CARLIN
13 240007161 HARN,ELWCO 1
14 28511201 HARNESS PRESSURE SWITCH 30” 1
15 14631316 BOX,ELEC,4”x2.1/8”,CSA 1
16 240007282 SW,TOGGLE 1
17 240007281 J BOX,TOGGLE,COVER,4”X4” 1
* This includes MLWCO #2, 4, 5, 7, 8, 9, & 10

19
REPLACEMENT PARTS
HARDWARE
ITEM PART NO. DESCRIPTION QTY
1 1570001 Relief Valve #15 ¾ 1
2 PF-019.02
Pipe Fit Coupling ¾" 1
3 PF-005.01
Pipe Fit Npl ¾ Close 1
4HW06701 Stud
5
⁄16 -18 x 2 ⅜ 4
5 2252501
Support - Jacket Brkt 2
6HW07001 Stud
5
⁄16 " x 18 x 1 ⅜" 3
7HW06901 Nut
5
⁄16 " - 18 Wislock 8
8HW-016.02
Drain 1
9 PF-004.04
Pipe Fit Bushing 1¼ x ¾ 1
10
2452906
Flue Collector - 3 Sec.
1
2452902
Flue Collector - 4 Sec.
2452903 Flue Collector - 5 Sec.
2452907 Flue Collector - 6 Sec.
2452908 Flue Collector - 7 Sec.
11 109007327
Bafe,Assy,H/E,Rear
1

20
REPLACEMENT PARTS









 
HEAT EXCHANGER
ITEM PART NO. DESCRIPTION QTY
1 100-5-10.01 Rear Section 1
2 100-1-8.01
#60 Push Nipple - 3 Sec. 2
#60 Push Nipple - 4 Sec. 3
#60 Push Nipple - 5 Sec. 4
#60 Push Nipple - 6 Sec. 5
#60 Push Nipple - 7 Sec.
6
3 10051101
Center Section - 3 Sec. 1
Center Section - 4 Sec. 2
Center Section - 5 Sec. 3
Center Section - 6 Sec. 4
Center Section - 7 Sec.
5
4 10051802
Front Section Castover 1
5611508 Kit - Target Wall & Insulation Blanket
Kit Includes #5 and #6
5 2552701 Target Wall - Pyrolite 1
6 25511005
Insul Blanket 16x24 1
7
HW-025.05 Tie Rod ½ x 9 - 3 Sec.
3
HW-025.01 Tie Rod ½ x 12½ - 4 Sec.
HW-025.02 Tie Rod ½ x 16½ - 5 Sec.
HW-025.03 Tie Rod ½ x 20½ - 6 Sec.
HW-025.09 Tie Rod ½ x 23½ - 7 Sec.
ITEM PART NO. DESCRIPTION QTY
8 100-1-5.01
#22 Push Nipple - 3 Sec. 2
#22 Push Nipple - 4 Sec. 3
#22 Push Nipple - 5 Sec. 4
#22 Push Nipple - 6 Sec. 5
#22 Push Nipple - 7 Sec. 6
9 MS-006.00
Rope, Med. Density - 3 Sec. 13.0'
Rope, Med. Density - 4 Sec. 19.5'
Rope, Med. Density - 5 Sec. 26.0'
Rope, Med. Density - 6 Sec. 32.5'
Rope, Med. Density - 7 Sec. 39.0'
10 HW-008.03
Washer ½ ID Flat 3
11 HW-003.05
Nut ½ -13 Hex Head 3
FULLY ASSEMBLED HEAT EXCHANGERS
550001977 3 Section Without Coil
550001978 4 Section Without Coil
550001979 5 Section Without Coil
550001980 6 Section Without Coil
550001981 7 Section Without Coil
550001982 3 Section With Tankless Coil
550001983 4 Section With Tankless Coil
550001984 5 Section With Tankless Coil
550001985 6 Section With Tankless Coil
550001986 7 Section With Tankless Coil