ECR SBO Series Oil Steam Boilers Instruction Manual

ECR SBO Series Oil Steam Boilers

TO THE INSTALLER
This manual is the property of the owner and must be affixed near the boiler for future reference.

Service Information

• Name:
• Address:
• Phone:

ECR International Inc. 2201 Dwyer Avenue, Utica, NY 13501 Tel. 800 325 5479 www.ecrinternational.com PN 240013301 REV. B [02/23/2021]

INSTALLATION CLEARANCE
Follow the installation instructions provided in this manual in the order shown. The order of these instructions has been set to provide the installer with a logical sequence of steps that will minimize potential interferences and maximize safety during boiler installation.

SPECIAL ATTENTION BOXES
Throughout this manual, you will see special attention boxes intended to supplement the instructions and make special notice of potential hazards. These categories mean, in the judgment of manufacturer.

DANGER

• Indicates a hazardous situation, which, if not avoided, will result in death or serious injury and major property damage.

WARNING
Indicates a hazardous situation, which, if not avoided, could result in death or serious injury and major property damage.

CAUTION
Indicates a hazardous situation, which, if not avoided, could result in minor or moderate injury, and minor property damage.

NOTICE
Indicates special attention is needed, not related to personal injury or property damage.

PREINSTALLATION

WARNING
This manual is intended for use by Qualified Heating Professionals only. Installation, service, or adjustment of this heating appliance by anyone other than a Qualified Heating Professional can cause significant property damage, personal injury, or death.Read carefully, study these instructions before beginning work. It will save time. Study the included drawings. Save these instructions for reference. The boiler warranty can be voided if the boiler is not installed, maintained and serviced correctly.

NOTICE
The equipment shall be installed by those installation regulations in force in the local area where the installation is to be made, including the current edition of NFPA-31, Standard for the Installation of Oil-Burning Equipment. These shall be carefully followed in all cases. Authorities having jurisdiction shall be consulted before installations are made.

CAUTION
Never burn garbage or paper in the unit, and never leave combustible material around it.

CAUTION
Do not tamper with boiler controls.

CLEARANCES

Required from Jacket to Combustible Construction| Recommended From Jacket for Accessibility and Mounting Controls
---|---
Top| 5”| 24” to clean flueways.
Front| 16.5”| 16.5” from jacket due to burner.
Left| 2”*| 12” due to burner swing radius.

Right

| ****

2”*

| 18” on steam with tankless heater
9” in area of boiler service switch and junction box.
Rear| 2”*| 9” for mounting relief valve in standard location.
Vent Pipe (Single Wall)** – 9” to Combustible Construction. Clearance may be reduced using methods in NFPA 31.

Vent Pipe (Double Wall) – See Manufacturer’s Instructions.

• Consider also vent pipe clearance, including distance from the edge of the flue outlet to combustible construction (as applicable).
• See the dimensional drawing for the alternate relief valve location.

The unit may be installed on combustible flooring, provided the boiler is not set on carpet and a metal drip pan is placed under the appliance. The unit may be installed in a closet with the above clearances. See also Section B, Air for Combustion and Ventilation.

AIR FOR COMBUSTION & VENTILATION

1. Be certain adequate facilities are available to provide air for satisfactory combustion and ventilation.
2. Appliances Located in Unconfined Spaces (a space whose volume is equal to or greater than 50 cubic feet per 1,000 Btu/hr of the aggregate input rating of all fuel-burning appliances installed in that space).
   •  For installation in unconfined spaces with conventional construction and larger areas such as basements, the supply of air for combustion and ventilation can usually be considered adequate.
3. Appliances Located in Confined Spaces (a space whose volume is less than 50 cubic feet per 1,000 Btu/hr of the aggregate input rating of all fuel-burning appliances installed in that space).
4. All air from inside the building: Provide two permanent openings communicating directly with an additional room. If all air for combustion and ventilation is to come from within the building: two openings, one near the ceiling and one near the floor of the boiler room shall be provided with the minimum free area of each opening equal to 140 sq. in. per gallon of oil burned.
5. If all air for combustion and ventilation is to come from outside the building: two openings, one near the ceiling and one near the floor of the boiler room shall be provided with the minimum free area of each opening equal to 35 sq. in. per gallon of oil burned.
6. If ducts are used to convey the air, areas of 35 sq. in. per gallon of oil burned for vertical ducts or 70 sq. in. per gallon of oil burned for horizontal ducts are to be provided. Ducts shall have the same area as the free area of the openings to which they are connected.

CHIMNEY / VENT & DRAFT CONTROL

WARNING
This boiler shall be connected to a venting system having a sufficient draft. Follow the draft requirements listed in Section C below. Improper venting may result in property damage and the release of flue gases that contain deadly carbon monoxide into the home, which can cause severe personal injury, death, or substantial property damage.

1. Draft Requirement – The minimum draft required in the vent system is -.03” W.C. to -.06” W.C. depending on the boiler model, see Table 7.1 (Section 7). This draft is necessary to provide the required draft over fire of -.01” W.C. to -.02” W.C..

2. Barometric draft control is required for regulation of over fire draft. Follow the manufacturer’s instructions to locate and adjust the control. The vent system and installation must follow the current edition of ANSI/ NFPA 211, “Standard for Chimneys, Fireplaces, Vents, and Solid Fuel Burning Appliances”; NFPA-31, “Standard for the Installation of Oil-Burning Equipment” and in Canada, CSA B 139, “Installation Code for Oil-Burning Equipment” or applicable provisions of local building codes. Typical minimum chimney size is 8” x 8” x 15 feet high unless otherwise allowed by code. If the vent system is not sized correctly, the burner may not operate properly. This can cause poor combustion, sooting, and odours to occur.

3. NFPA 31 recommends using a listed metal chimney liner to reduce transient low draft during startup and flue gas condensation during cyclic operation. Any doubt on the condition of a chimney or its ability to prevent the generation and accumulation of flue gas condensate must be lined according to NFPA 31.

4. Inspect the existing chimney, chimney liner, and vent connector. Make sure each are in good condition and repair or replace as required.
   WARNING
   A masonry chimney must have a clay flue liner. If gas condensation is occurring, install a listed corrosion-resistant metal liner. Failure to install a clay flue liner may cause severe injury or death.

5. Chimney flue gas condensation is affected by several factors such as chimney design, flue connector length, sulphur content in fuel oil, and flue gas temperature. If your application experiences flue gas condensation, installation of a listed corrosion-resistant metal liner is required.

   • External chimneys are more susceptible to flue gas condensation due to exposure to outside air temperatures. To prevent corrosion due to flue gas condensation, use a listed corrosion-resistant metal liner.
   • When firing the appliance where fuel oil sulphur content exceeds 300ppm, a listed corrosion-resistant chimney liner is recommended.

WARNING
Series SBO is approved at the listed firing rates only. Failure to fire the boiler at its designed input may cause excessive flue gas condensation. In addition, lower input may not create enough draft to adequately evacuate the products of combustion.

PLANNING THE LAYOUT
Prepare sketches and notes of the layout of the installation. Include boiler location, venting system, existing piping and wiring. Show existing equipment that may interfere with the installation of new equipment.

BOILER WATER TREATMENT
Consult a local qualified water treatment specialist for recommendations regarding the appropriate chemical compounds and concentrations that are compatible with local environmental regulations.

1. Boiler water pH should be in the 7.5 to 11 range.
2. Boiler water chloride concentration should be less than 30 ppm.
3. The water hardness should be less than 7 grains per gallon to prevent scale build-up and foaming.

BOILER PLACEMENT & ASSEMBLY

SETTING THE BOILER

1. Provide a level foundation, located as close as possible to the center of the heating system.
2. Refer to Figure 2.1 for an exploded view of the boiler while checking and/or assembling parts of the boiler.
3. Open the burner mounting plate (item 5) at this time to make certain the target wall (item 2) is seated in the back of the combustion chamber. The ceramic fiber blanket baseliner (item 3: SBO-4 only) should be lying flat on the bottom of the combustion chamber between the target wall and burner mounting plate. Close burner mounting plate.
4. See clearance information in Section 1, “Preinstallation.”

FLUE OUTLET
Boilers are shipped set up for rear flue outlet and may be converted to top flue outlet by removing the large knockout in the jacket top panel and switching the flue collar (item 14) with the flue cover plate (item 13). Both items use the same gasket seal (item 12). Continue to use machine screws in the back section and sheet metal screws in (top) flue collector. Locate the jacket cover plate in the accessory carton and attach to jacket rear panel using the sheet metal screws provided.

PIPING AND CONTROLS

NOTICE

• Do not pipe boiler before jacket is installed.

PRESSURE TEST BLOCK ASSEMBLY

1. Temporarily provide a cold water supply connection to the boiler.
2. Install pressure gauge in tapping provided. See Boiler Dimensional drawing, Figure 7.1 (Section 7)
3. Plug all open tappings in the boiler and fill with water. Apply approximately thirty (30) psig pressure. Check to make certain that all joints and fittings are water tight.
4. After all joints and connections have been proven tight, remove cold water supply and plugs from all tappings that are to be used. See Figure 7.1 (Section 7) for tapping locations.

BOILER RETURN CLEARANCE

If using front return, piping must allow for opening and closing Burner Mounting Plate.

STEAM BOILER PIPING

1. Refer to Hydronics Institute Residential Hydronic Heating Installation/Design Guide for assistance.
2. See Figure 3.1. The return loop from the system should always enter an equalizer through the Hartford Loop, 2” to 4” below the normal water line (see dimensional drawing for normal water line).
3. See Table 3.1 and Figure 3.1 for pipe size information.
4. Pipe the steam header a minimum of 24” above the normal water line using swing joints to attach the risers to the steam header.

Table 3.1: Steam Pipe Sizing

TANKLESS HEATER OR COVER PLATE

1. If a tankless coil is used (item 9), install in the opening in rear section.
2. For suggested piping of tankless water heater refer to Figure 3.2.
3. Install control well for low limit operating control into 3/4 NPT control tapping on tankless heater plate. Install low-limit operating control on the control well. Wire low limit control to oil burner per Figure 4.2.

DANGER
Install an anti-scald device in the hot water supply piping. Water temperatures above 125°F can cause severe burns instantly or death from scalds.

If not using a tankless coil, cover the heater opening with cover plate (item 16). The packaged boiler is factory-equipped with a cover plate installed.

NOTICE
Be sure rubber gasket is in place between cover plate or water heater plate and the boiler section.

CONTROLS

1. Steam Boiler Controls:

   • Install the gauge glass trim and safety relief valve. See Figure 7.1 (Section 7).

   • For installations requiring a second operating control that senses steam pressure (not provided), use a Honeywell PA404A or equivalent. On probe boilers, install the additional pressure control opposite the
     standard PA404A using a cross instead of a tee along with a second brass siphon (not provided).

   • Boiler is factory equipped with Hydrolevel CG450 low water cut off. See Figure 7.1 (Section 7) for location. See also the control manufacturer instruction sheet.

CAUTION
Pipe the discharge of the safety valve or relief valve to prevent injury in the event of pressure relief. Pipe the discharge to a drain. Provide piping that is the same size as the relief valve.

For complete information on servicing and adjustment of controls, refer to the attached control specification sheets.

ELECTRICAL

GENERAL
All electrical wiring shall be done under the National Electrical Code and Local Requirements. Single pole switches including those of safety controls or protective devices shall not be wired in a grounded line.

WIRING

1. See Section 5 for the mounting burner.
   WARNING
   Improper installation of the burner harness can allow the burner to energize with the burner mounting plate open, creating a severe burn hazard to boiler maintenance personnel.

2. Burner harness is pre-wired to the burner by burner manufacturer. After the burner is mounted, the Molex plug on burner harness plugs into the mating Molex receptacle in the junction box. See Figure 4.1.

3. For complete information on servicing and adjustment of controls, refer to the attached control specification sheets.

4. See Wiring Diagram Figure 4.2 for Steam Boilers with Probe LWCO

ELECTRICAL

BURNER SETUP & BOILER OPERATION

CAUTION
Burn only #2 Fuel Oil in this appliance. Do not use gasoline, crankcase drainings or any oil containing gasoline.

BURNER INSTALLATION

1. The oil burner is supplied with a mounting flange fixed in position.

2. Mount the burner to the burner mounting plate (item 5) with four (4) 5/16” studs and nuts provided.
   NOTICE Be sure hi temp gasket is between the burner mounting flange and the Burner Mounting Plate.

3. Care must be taken when routing the oil lines so not to interfere with the opening and closing of the burner mounting plate. Flexible oil lines or flared copper disconnects with valves (when copper lines are used) may be installed to assure full opening of the burner mounting plate when servicing.

4. Oil burner specifications: For information pertinent to the oil burner such as nozzle sizing, fuel supply piping, adjusting or servicing, refer to the charts in this section and the burner installation manual.

BURNER START-UP & ADJUSTMENT

CAUTION
Do not start the burner unless all cleanout doors are in place.

1. 1. The burner should start automatically when the thermostat is turned up and the main boiler service switch is turned on. If burner does not start, check to be sure there is oil in the tank and push square red reset button on Beckett burner control. If the burner still does not start, contact the serviceman.
   CAUTION
   Do not attempt to start the burner when excess oil has accumulated, when the unit is full of vapour, or when the combustion chamber is very hot.

2. Adjust burner and barometric draft control for highest CO² (Maximum 13.1%) while maintaining a 0 Smoke and a minimum -.01” W.C. draft overfire. All adjustments must be made using suitable instruments such as found in a Bacharach Combustion Test Kit.

3. Burner and boiler can be shut down by turning down the thermostat and moving the main boiler service switch to the “off” position.

4. See burner manufacturer’s manual for further information regarding the burner.

CHECK BOILER CONTROLS

1. Limit and Operating Controls:
   • Lower the set point of each control until the burner shuts down. Note that the system pressure (or temperature) corresponds to the desired set point.
   • Return the controls to the desired set point.
2. Low Water Cut-off – consult the manufacturer’s instructions for the low water cut-off operational check procedure.

FILL THE BOILER

1. The normal water line for steam boilers with gravity returns is shown in Figure 7.1.
2. For systems with pumped returns or boiler feed units, the fill level will depend on the control being used. Verify the unit maintains a water level that is visible in the gauge glass and does not exceed the normal water level.
3. Check all joints and fittings in the system piping for leaks and repair as necessary
4. See Section 1 – Preinstallation for boiler water treatment requirements.

CLEAN THE BOILER

1. Clean the boiler within one week after initial start-up. Cleaning will be more effective if boiler operates a day or two to loosen sediment and impurities in the system.

2. Boiler must be cleaned to remove any accumulation of oil, grease, sludge, etc. in the system. These substances can cause foaming and surging of boiler water, producing an unstable water line and water carryover to system.
   WARNING Cleaning the boiler requires the use of very hot water and corrosive chemicals. Use care when handling to prevent injury.

3. Connect a skim valve off the 1-1/4 NPT skim tapping on front of boiler. See Figure 7.1 (Section 7) to locate skim tapping. Run a drain line off the skim valve to a point of safe discharge.

4. Provide a means of supplying continuous fresh water to the boiler for the cleaning process.

5. Use common washing soda, such as Arm and Hammer Super Washing Soda. Mix 1/2 pound of soda with water in a 10-quart pail. Pour the mixture into the boiler through the safety relief valve tapping.

6. Open the skim valve. Fill boiler until water begins to flow out of the valve.
   CAUTION
   Do not leave the boiler unattended while firing burner. Operating a boiler with water below the minimum permissible water level may fracture sections.

7. Turn on the burner. Allow boiler water to heat up to just below steaming (180 – 200°F). Do not allow the boiler to steam; steaming mixes up contaminants instead of floating them at the surface.

8. Open make-up water valve to continually feed water to the boiler. Adjust flow to maintain water temperature at 180 – 200° F.
   CAUTION
   Do not allow make-up water to flow too fast. Excessive quantities of cold water may fracture sections.

9. Continue skimming the boiler until water flowing from skim tapping flows clear. This will take some time, possibly several hours for a dirty system.

10. Turn off the burner, and close the make-up water valve.

11. Drain the boiler completely. Refill and drain one or two times to wash out all washing soda.

12. Remove the skim valve and piping. Install 1-1/4”NPT plug-in skim tapping.

NOTICE
If gauge glass becomes dirty more contaminants have worked loose in the system. Repeat the cleaning and skimming process as needed to clean the system.

Table 5.1: Beckett Burner Specifications

BECKETT BURNER SPECIFICATIONS

Boiler Model No.| Burner Model No.| Burner Head| Static Plate| ****

Nozzle Size

| Pump Pressure| Start-up Settings| Head Setting
Air Shutter| Air Band
SBO-3085| AFG-F31| F3| 3-3/8”| 0.75 80° B HAGO2| 140 PSI| 6.0| 1| N/A
SBO-3105| AFG-F4| F4| 3-3/8”| 0.90 80° B HAGO| 140 PSI| 6.0| 0| N/A
SBO-4125| AFG-F4| F4| 3-3/8”| 1.10 80° B HAGO2| 140 PSI| 5.0| 2| N/A
SBO-4150| AFG-F6| F6| 2-3/4”| 1.25 80° B HAGO| 140 PSI| 8.0| 1| N/A

Factory Equipped Burner Cartons are indicated in Boldface.

1. Requires Low Firing Rate Baffle.
2. Parts required to convert factory equipped burner to operate at alternate lower firing rate are provided in rerate kits, sold separately.

MAINTENANCE

WARNING

Product Safety Information Refractory Ceramic Fiber Product
This appliance contains materials made from refractory ceramic fibers (RCF). Airborne RCF, when inhaled, have been classified by the International Agency for Research on Cancer (IARC), as a possible carcinogen to humans. After the RCF materials have been exposed to temperatures above 1800°F, they can change into crystalline silica, which has been classified by the IARC as carcinogenic to humans. If particles become airborne during service or repair, inhalation of these particles may be hazardous to your health. Avoid Breathing Fiber Particulates and Dust Suppliers of RCF recommend the following precautions be taken when handling these materials:

Precautionary Measures
Provide adequate ventilation. Wear a NIOSH/MSHA-approved respirator. Wear long-sleeved, loose fitting clothing and gloves to prevent skin contact. Wear eye goggles. Minimize airborne dust prior to handling and removal by water misting the material and avoiding unnecessary disturbance of materials. Wash work clothes separately from others. Rinse the washer thoroughly after use. Discard RCF materials by sealing in an airtight plastic bag.

First Aid Procedures:

• Inhalation : If breathing difficulty or irritation occurs, move to a location with fresh clean air. Seek immediate medical attention if symptoms persist.
• Skin Contact : Wash the affected area gently with a mild soap and warm water. Seek immediate medical attention if irritation persists.
• Eye Contact : Flush eyes with water for 15 minutes while holding eyelids apart. Do not rub your eyes. Seek immediate medical attention if irritation persists.
• Ingestion: Drink 1 to 2 glasses of water. Do not induce vomiting. Seek immediate medical attention.

GENERAL

1. Check pipes adjacent to cold walls or in unheated spaces. Insulate and tape them if necessary to be sure they can’t freeze up.
2. If there is considerable foreign matter in the boiler water, the boiler should be shut down and allowed to cool, then drained and thoroughly flushed out. Drain the boiler at the drain cock. Pipe the drain cock to a suitable drain. Skim and blow down the boiler to remove the remaining matter. See Section
3. PreInstallation for water quality requirements If there is evidence that a hard scale has formed on the internal surfaces, the boiler should be cleaned by chemical means as prescribed by a qualified water treatment specialist.
4. There must be no signs of continuous wetness at the chimney. If signs of continuous wetness are observed, a qualified service agency must be consulted to modify the vent configuration to prevent the formation of condensate, which may damage the vent pipe.

WARNING
Do not use this appliance if any part has been underwater. Improper or dangerous operation may result. Immediately call a qualified service technician to inspect the boiler and to replace any part of the control system and any control which has been under water.

DAILY MAINTENANCE (WITH BOILER OPERATING)
Daily boiler observation can be performed by the owner. If any potential problems are found, a qualified installer or service technician/agency must be notified.

1. Remove any combustible materials, gasoline and other flammable liquids and substances that generate flammable vapors from the area where the boiler is contained. Make certain that the boiler area has ample air for combustion and ventilation and that there are no obstructions to the free flow of air to and from the boiler.
2. Observe general boiler conditions (unusual noises, vibrations, etc.)
3. Observe the operating pressure gauge on the boiler. Boiler pressure should never be higher than 5 psi below the rating shown on the safety relief valve. The valve rating can be found on the top of the safety relief valve.
4. Check for water leaks in the boiler and system piping.

MAINTENANCE OF SAFETY RELIEF VALVE

1. Check the function and maintain the safety relief valve as specified by the manufacturer, typically every other month or every month, per the instructions on the tag on the safety relief valve.

MONTHLY MAINTENANCE (WITH BOILER OPERATING)

1. Check boiler room floor drains for proper functioning.
2. Test probe type low-water cut-off by using the Pushto-Test Button.
3. Observe the operation of the boiler through one complete cycle to make sure the boiler is controlled as intended.
4. Follow additional instructions in the Burner Manual for proving the burner component operation.

NOTICE
Entire heating system, including the boiler, burner and venting system, must be inspected at least once a year by a qualified heating professional. The boiler is to be cleaned at least once a year.

WARNING
Disconnect all power to the burner before accessing the combustion chamber.

TO CLEAN

1. Remove top jacket panel, flue collector cover plate, Item 11 (Figure 2.1), and flue baffles.

2. To thoroughly clean the boiler it must be brushed down from the top. Alternatively, for limited space or minimum clearance to combustible installations, cleaning the heat exchanger from the combustion chamber side is acceptable. If unit is extremely dirty, it may be necessary to brush from both directions. The target wall is made of a soft ceramic fiber. Care must be taken not to damage this material during cleaning.

3. Remove any scale or soot from the combustion chamber area by vacuum cleaning or any other available means.
   NOTICE
   Burner mounting plate must be opened to facilitate this operation.

4. Replace oil burner nozzle and filter(s).

5. Re-install flue baffles. When replacing the flue collector cover plate, be certain that the blanket seal between the flue collector cover plate and top section makes a tight seal to prevent leakage of the products of combustion.

6. Replace jacket top panel.
   NOTICE
   All cover plates, enclosures, and guards must be maintained in place at all times, except during maintenance and servicing.

7. Inspect the venting system.

IF A LONG SHUTDOWN IS REQUIRED

1. To take the boiler out of service if the boiler and system are not to be used when temperatures are below freezing:
   • Drain the boiler and system completely and shut off the make-up water supply.
   • Open the main line power disconnect switch to the boiler. Remove the fuses or secure the switch so that the power cannot be turned on accidentally.
2. Be certain that the boiler and system are refilled before returning to service.

CAUTION
Always keep the manual fuel supply valve shut off if the burner is shut down for an extended period.

BOILER DIMENSIONS & RATINGS

Figure 7.1: Boiler Dimensions

Boiler Model Number| Jacket Depth “A”| Jacket Width “B”| Jacket Height “C”| Rear of Jacket to c/l of Vent “D”
---|---|---|---|---
SBO-3085/3105| 15-3/4”| 22-1/8”| 35”| 8-7/8”
SBO-4125/4150| 19-3/4”| 22-1/8”| 35”| 10-7/8”

Table 7.1: Boiler Ratings

SERIES SBO BOILER RATINGS

Series SBO| ****

Water Content, gal

| ****

Minimum Stack Draft Required, in. W.C.

Boiler Model Number

| ****

Input

| Heating Capacity 3 , MBH| ****

Net Ratings 2

| AFUE,

%

GPH¹| MBH| Steam| Steam Sq. Ft.| Steam, MBH| Steam
SBO-3085| 0.85| 119| 104| 325| 78| 85.6| 12.00| -0.04
SBO-3105| 1.05| 147| 127| 396| 95| 85.0| 12.00| -0.05
SBO-4125| 1.25| 175| 152| 475| 114| 85.6| 14.87| -0.04
SBO-4150| 1.50| 210| 180| 563| 135| 85.0| 14.87| -0.05

1. Burner input based on No. 2 fuel oil with a heating value of 140,000 Btu per gallon.
2. Net steam ratings based on an allowance of 1.333. Additional allowance is required when selecting a boiler for installations having unusual piping and pickup requirements, such as intermittent system operation, extensive piping systems, etc.
3. Heating Capacity and Annual Fuel Utilization Efficiency (AFUE) ratings are based on U.S. Government tests. Chimney Size: 8” x 8” x 15 ft.

REPAIR PARTS

**Item No.*| **

Description

| Additional Information| Stock Code
---|---|---|---

1

| Block Assembly – SBO-3 (Includes 2, 4, 5, 16. 17)| –| SB90707
Block Assembly – SBO-4 (Includes 2, 3, 4, 5, 16, 17)| –| SB90708
2| Target Wall| –| SB50795
3| Combustion Chamber Blanket Liner SBO-4| –| 420001185
4| Swing Door Hinge Kit| –| SB7240
5| Burner Mounting Plate Assembly Kit (Includes Mounting Plate Insulation, Gaskets, Hardware and #6)| –| SB90158
–| Burner Mounting Plate Insulation| –| SB50794
6| Burner Mounting Plate Rope Seal| 4.4 Feet| SB51211
9| Tankless Coil Kit with Gasket (17) and Bolts| –| SB90507
–| Tankless Coil Kit with Low Limit Control (L4006A1058) and wiring, Gasket (17) and Bolts| ****

–

| ****

550004158

10

| ****

Flue Collector Plate Rope Seal

| SBO-3 3.8 ft.

SBO-4 4.4 ft.

| ****

SB51211

11| Flue Collector Plate – SBO-3| –| SB90565
–| Flue Collector Plate – SBO-4| –| SB90566
12| Flue Gasket Seal| –| SBPP5011
13| Top/Rear Flue Outlet Cover Plate| –| SB90563
14| Flue Collar| –| SB90386

15

| Jacket Assembly – SBO-3| –| SB91165
Jacket Assembly – SBO-4| –| SB91166
16| Steel Cover Plate Kit (Rear, Includes Gasket and Hardware)| –| SB90141
17| Rubber Gasket (Rear Section Plate)| –| SB51673
18| Flue Baffle| 1 per Flueway| SB51613
–| Pressuretrol (PA404A1009)| –| SS-001.01
–| Drain Valve| –| 240009323
–| Pop Safety Valve| –| 1570001
–| Steam Pressure Gauge| –| 14623006
–| Water Level Gauge Glass (22-209-10 with 7-1/4” Glass)| –| SB50513
–| Syphon| –| 14643004
–| Probe Type Low Water Cut-Off (CG450P1560)| –| SB29041
–| Low Limit Operating Control with Control Well (L4006A1058)| –| SB50535
–| Low Limit Wire Harness| –| SB7540
–| Beckett AFG Burner for SBO-3105| –| 550004153
–| Beckett AFG Burner for SBO-4150| –| 550004154
–| Rerate Kit for SBO-3085| –| 550004155
–| Rerate Kit for SBO-4125| –| 550004156

• Part numbers may be subject to change without notice.
• See Figure 2.1 on page 4 for the boiler exploded view.

ECR International Inc. 2201 Dwyer Avenue, Utica, NY 13501 Tel. 800 325 5479 www.ecrinternational.com PN 240013301 REV. B [02/23/2021]

References

• A Family of Heating and Cooling Brands - ECR International / Granby

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