Omni OWB Series manual

Econo Heat ♦ 5714 1st Avenue ♦ Spokane Washington 99212. ♦ (509)534-1022 ♦ www.econoheat.com 100270 Rev A3 By WASTE OIL FIRED BOILER OWB Series Installation, Operation, And Service Instructions Manual Thank you and congratulations on your purchase of an Omni Waste Oil Fired Boi ler. You have selected a high quality, precision-engineered pie[...]

TABLE OF CONTENTS WASTE OIL BURNER ........................................................................ 5 OIL BURNER TECHNOLOGY .......................................................... 8 OIL BURNER/PUMP TECHNICAL DATA ....................................... 10 BOILER SPECIFICATIONS .............................................................[...]

Installation, Operation, And Service Instructions 3 PRECAUTIONS Waste oil may contain many foreign materials. Waste oil may also contain gasoline. Therefore, specific precaut ions on the handling and storage of waste oils are to be observed when using, cleaning and maintaining this heater. Use a screen in a funnel when pouring oil into storage tank[...]

IMPORTANT NOTICE TO OWNER AND INSTALLER To enjoy the long term benefits of burning your used oil in an Omni Waste Oil Boiler, it is necessary to become familiar with the correct installation operation and maintenance of your new boiler. Before installing or operating this appliance, make sure you read and understand this manual. IMPROPER INSTALLATI[...]

WASTE OIL BURNER ONLY Authorized Technicians strictly comp ly ing w ith the manufacturer’s instructions and the local standards should perform installation, maintenance and serv ice on the unit’s internal components. Installation and use of this used oil burning appliance shall be in accordance w ith the standard for the Installation of Oil Bur[...]

Air Muffler/Filter Pre-Heater Control Circuit Board Oil Pre-Heater Block Photo Eye Flame Sensor Electrical Terminal Block Transformer Igniter Springs Heater Electrical Schematic Figure 2 – Oil Burner (Back View Opened) Electrodes Oil Valve Nozzle Burner Motor Flame Cone Figure 3 – Oil Burner (Front View) 6 Installation, Operation, And Service I[...]

Oil Outle t Oil Inlet Figure 4 –Oil Pump Diagram Figure 5 –Oil Pump Assembly Installation, Operation, And Service Instructions 7[...]

OIL BURNER TECHNOLOGY Omni’s patented burner technology improves the e fficiency of the oil burn process by continuous stabilization of the oil viscosity. Optimum atom ization (spray) is accomplished by precisely pre- heating the oil and air prior to introduction to the combustion chamber. The waste oil enters into the Oil Pre-Heater Block (figur[...]

• Air Pressure Adjuster: (figure1) Adjusts the air pressure going to the pre-heater block. Should be adjusted between 12 PSI and 13PSI as indicated on the Air Pressure Gauge on the burner for thorough burn of the waste oil. Note: In order to insure proper air adjustment, air gauge must read 0 when burner is cycled off or powered down. • Oil Pre[...]

OIL BURNER/PUMP TECHNICAL DATA BURNER ASSEMBLY Performance Ratings Voltage - 115 VAC Cycles - 60Hz Total Operating Amperage (Burner Only) Amp 8.4 Total Operating Amperage (Burner and Oil Pump) Amp 10.5 Electrical Operating Consum ption (Burner Only) Watts 970 Electrical Operating Consumpti on (Burner and Oil Pump) Watts 1,212 Weight Lbs 36.5 Oil Pr[...]

BOILER SPECIFICATIONS Figure 6 –Boiler (OWB-35 & OWB-50) OWB series boilers are three pass Scotch Ma rine design with fully water backed transfer surfaces. Boilers are designed for use in forced hot water heating systems. Heating is supplied by a Waste Oil Burner that burns all petroleum products any weight combination up to SAE 90W as well a[...]

CODE REQUIREMENTS Installations must comply with all state, local, and utility codes, laws, regulations, and ordinances, and CSA standard B139. Where required by the authority having jurisdiction, the installation must conform to Am erican society of Mechanical Engineers Safety Code for Controls and Safety Devices for Automatically Fired Boilers, N[...]

2-1/2 M.P.T. Supply Connection 9-3/8” Centerline Of Burner Plate 36” 29-1/2” 20” 17” 4” 2-1/2 F.P.T. Return Connection 3/4” L 8” 33” A pprox. 14” OWB-35 and OWB-50 Specifications 1-1/2” Supply Connection Circulato r 26” 21-1/2” 15-1/2” 12-1/4” 1-1/2” Return Connection L 25” A pprox. 14” OWB-9, OWB-15, and OWB-25 [...]

COMBUSTION AIR SUPPLY WARNING Failure to provide an adequate supply of fresh air for combustion will result in hazardous operating conditions. Note If you use a fireplace or a kitchen or bathroom exhaust fan, you should install an outside air intake. These devices will rob the boiler and water heater of combustion air. 1. In unconfined spaces in bu[...]

(b) All Air From Outdoors: The confined space shall be provided with two permanent openings, one within 12 inches of the top and another within 12 inches of the bottom of the enclosure. The openings shall comm unicate directly, or by ducts, with the outdoors or crawl or attic spaces which communicate freely with the outdoors. Direct To Outdoors, Se[...]

NOTE All wall openings directly to outdoors must be screened to prevent entry by birds or small animals. With Horizontal Ducts See Figure 10. Note: Each air duct opening shall have a free area of not less than one square inch per 2,000 Btu per hour of the total input rating of all equipment in the enclosure.* Chimney Outlet Air Duct Inlet Air Duct [...]

3. Breeching • See Table 2 for minimum recommended breeching and chim ney sizes. • Keep run boiler to chimney as short as possible. • Use as few elbows as possible. • Slope upward towards chimney at not less than 1/4” per foot. • Use a sealed-in thimble for the chimney connection. • Connect together all sections and/or fittings with s[...]

SIDE-WALL VENTING---IMPORTANT NOTE Two problems arise when side wall venting any oil appliance; 1. There is sometim es an accelerated rate at which soot builds up on the cad-cell, spinner, etc. 2. There is the potential for severe soot damage to the side of the structure in the event that the boiler operates at a high smoke level. This can happen f[...]

INSTALLING THE BOILER Placing The Boiler (OWB-9 – OWB-25) 1. Move the boiler as close as possible to its final location in the crate. 2. Rem ove the two lag screws holding the rear feet to the skid. 3. Rem ove the front jacket panel. Cut the band holding the front of the boiler to the skid. 4. Move the boiler into the final position. 5. Waste Oil[...]

Baro m etric Draft Control Pitch U p 1/4” p er foo t 18” Strai g ht Run Preferred Figure 12. INSTALLING THE BOILER CONTROLS AND ACCESSORIES 1. Accessories for Boilers OWB-9, OW B-15, and OWB-25: a) Take the L8148A Aquastat relay, the well, the pressure relief valve with pipe nipple and the temperature/pressure gauge from the large carton which [...]

d) Remove the circulating pump from its carton in the crate and mount it to the pump flange on the end of the return manifold. 2. Bare Boiler: a) The pressure relief valve and temperature/pressure gauge are supplied with the boiler and should be mounted as shown in Figure 13. b) The bare boiler does not include the return manifold. The installer mu[...]

WATER PIPING CONNECTIONS 1. OWB-9, OW B-15, and OWB-25 boilers are shipped com plete with circulating pump. To make the piping connections to the boiler ready to connect to the system piping, the following will also be required at a minim um: 1 – Air Purger (same size as supply pipe) 1 – Pressure reducing Fill Valve 1 – Expansion Tank (sized [...]

Closed Type Expansion Tank Drain Cock Pressure Relief Valve R Figure 16. (b) Piping connections with diaphragm expansion tank--- See Figure 17. The cold water feed to the pressure reducing fill valve may be piped with 1/2 inch pipe. Supply to System Shutoff Valve Fill Valve Cold Water Feed Return From System Circulation Pump S 3/4 in. Shutoff Valve[...]

Supply and return and system piping should be sized by determining the pressure drop, required flow rate and pump capacity. WARNING Discharge piping from relief valve must be pi ped to a drain or m ust terminate 6” above floor to eliminate damage to the structure or personal injury. It m ust not be piped to a point where freezing might occur. 1. [...]

Isolation Valves Flow Control Valves Shutoff Valve S R Cold Water Feed Drain Coc k Figure 19. 2. MULTIPLE Z ONING WITH CIRCULATORS ----- Each pump will require a separate relay (Honeywell R845A or White Rodgers 829A- 845, or equivalent). Install a flow control valve in each zone including the indirect water heater to prevent gravity circulation. In[...]

Shutoff Valve Circulatin g Pum p s Stem Therm o m ete r Su pp l y to S y ste m Return from S y ste m B yp ass A S R Cold Water Feed Drain Coc k Circulatin g Pum p s Adjust the two manual valves to m aintain 160 degree F or m ore in the boiler while holding the supply water temperature at the stem therm ometer at 140 degree F or whatever minim um te[...]

Su pp l y to S y ste m Shutoff Valve S R Circulatin g Pum p s Cold Water Feed Return from S y ste m Drain Coc k Adjust the two manual valves to m aintain 135 degree F or m ore in the b oiler with return wate r at the lowest tem p erature to be ex p ected. Figure 21. 5. INTEGRATED SYSTEM (HEAT AND DOMESTIC HOT WATER) ----- With a single heating zone[...]

S Shutoff Valve Su pp l y to S y ste m Indirect Water Heater ( Stora g e Tank With Coil ) 3 Port Zone Valve R Cold Water Feed Return from S y ste m Drain Coc k Circulatin g Pum p s Figure 22. 6. INTEGRATED SYSTEM WITH MULTIPLE HEATING Z ONES AND NO PRIORITY FOR DOMESTIC HOT WATER, USING ZONE VALVES----- Where the boiler output is large relative to [...]

Indirect Water Heater Su pp l y to S y ste m S R Circulatin g Pum p s Cold Water Feed Shutoff Valve Zone Valves Return from S y ste m Drain Coc k Figure 23. 7. INTEGRATED SYSTEM, SINGLE OR MULTIPLE HEATING Z ONES, USING CIRCULATING PUMPS RATHER THAN ZONE VALVES---- Each pump will require a separate relay (Honeywell R845A or White Rodgers 828A- 845,[...]

8. COMBINATION HEATING/COOLING SY STEM WITH CHILLED WATER The chiller must be piped in parallel with the boiler and isolation valves installed to prevent the chilled water from circulating through the boiler and heated water from circulating through the chiller. See Figure 25. S Insulation Valve # 4 Chille r Circulatin g Pum p s Flow Chec k Return [...]

Air Se p arato r System Su pp l y Amtrol #720 Air Eliminator or E q ual System Circulato r S R Figure 26. 10. SINGLE OR MULTIPLE BOILER PIPING FOR PRIMARY/SECONDARY PUMPING Size Secondary Pump GPM at Gross Boiler Output for 20” Drop. When Calulating Pump Head, the Maximum Boiler Resistance for any Boiler will not Exceed 14 in. W.C. Head. Figure 2[...]

11. MULTIPLE BOILER PIPING- REVERSE RETURN FLOW WITH BLEND PUMP Figure 28. Check Valve System Su pp l y System Circulato r Pressure Reduction Valve Air Se p arato r Amtrol #720 Air Eliminator or E q ual Backflow Prevente r *Blend Pump S S R R *Blend Pum p Check Valve From City Water Su pp l y Ex p ansion Tan k Syste m Return 32 Installation, Operat[...]

Burner Mounting BOILER ASSEMBLY & WIRING NOTE: When the burner is field installed the installer must fill in the space between the burner blast tube and the insulation block on the inside of the burner door with refractory mix p rovided. Figure 29. OWB-35 and OWB-50 Burner Mounting & Boil er Door Detail Figure 30. OWB-9, OWB-15 and OWB-25 B[...]

Boiler Jacket Assembly 48 26A 25 26 Sight Class Assy 33 60 86 38 94 36 43 18 93 41 18 40 Figure 31. OWB-35 and OWB-50 Assembly Detail OWB-35 and OWB-50 Jacket Installation Instructions 1. Screw the four extension setscrews (43) into the four outer holes in the corners of the rear sections. Securely tighten the setscrews and other fastening bolts of[...]

8. Hook center panel (33) with flange edge down between side panels (93) and (94). 9. Attach the upper front trim panel (41) between the right and left side panels over the front door. 10. Place the top panel (86) in position. Hook to the side panels. 11. Remove sight glass plug in front door and install sight glass assembly. Sight Glass (25) Sight[...]

5. Attach one door bracket (18) to the botto m of both the left and right side jacket panels. Use two 8-32x1/2” screws (19) and nuts (20) to assemble each door bracket. 6. Attach the left and right side jacket panels to the boiler. The front end of the right side panel is attached to the hinge usi ng 10-24x3/4 screws (21). The front end of the le[...]

Single Zone Wiring WARNING All wiring and grounding must be done in accordance with the authority having j urisdiction or, in the absence of such authority, with the National Electrical Code ( ANSI/NFPA70 ) . 1) 120 Volt Wiring —The boiler should be provided with its own 20A branch circuit with fused disconnect. All 120 volt connections are made [...]

thermostat connections so that any zone valve that opens will also start the circulator and fire the boiler(assuming the high limit is not open). Zone valve term inal TH/TR has no internal connection on the zone valve; it is merely a “binding post” used to connect two or more wires. 38 Installation, Operation, And Service Instructions[...]

WHT RED YEL Figure 33. WIRING DIAGRAM, SINGLE HEATING ZONE ONLY Installation, Operation, And Service Instructions 39[...]

WHT RED YEL Figure 34. WIRING DIAGRAM, SINGLE HEATING ZONE ONLY (BOILERS EQUIPPED WITH BURNER DOOR DISCONNECT SWITCH) 40 Installation, Operation, And Service Instructions[...]

Figure 35. WIRING DIAGRAM, ZONE WIRING USING HONEYWELL V8043F VALVES (FACTORY BOILER WIRING NOT SHOWN –SEE FIGURE 33 OR 34) Figure 36. WIRING DIAGRAM, CIRCULATOR ZONE WIRING USING HONEYWELL R845A’S (FACTORY DIAGRAM WIRING NOT SHOWN –SEE FIGURE 33 OR 34) Installation, Operation, And Service Instructions 41[...]

BOILER START-UP AND ADJUSTMENTS FILL SYSTEM 1. Close m anual air vents (if used) and automatic air vents. Attach hose to boiler drain on return connection and run to a drain or to outdoors. Open drain cock and close shutoff valve on boiler supply pipe. 2. HEATING ONLY – SINGLE ZONE SYSTEM--- Open manual valve in cold water feed line and set the f[...]

WARNING DO NOT fire boiler without water or boiler sections will overheat and eventually crack WASTE OIL BURNER STARTUP 6. IMPORTANT- Prior to starting the unit, pre-fill t he filter and fuel line with oil to assist priming procedure. Oil pump motor turns at low RPM’s and would take significant time to complete priming process if not pre-filled. [...]

MAINTENANCE WASTE OIL BURNER: 1. Weekly Drain water from storage tank. 2. Monthly Clean pump screen on oil pump assembly of sludge and remove any water. Access to screen is by removing pump cover. Clean flame cone of deposits. 3. Yearly Inspect and adjust electrodes per (figure 37). CAUTION: turn off main electrical power before checking or adjusti[...]

Figure 37 –Electrode Adjusment Diagram When cleaning, inspect all three pieces thoroughly. When disassembling and reassembling nozzle, keep facing up as shown. Figure 38 –Nozzle Assembly Detail Installation, Operation, And Service Instructions 45[...]

TROUBLE-SHOOTING GUIDE NO HEAT: 1. Check burner power switch and m ake sure power is available to the whole control system. 2. If included in system , check low-water cutoff and/or manual reset high limit. 3. Check room thermostat(s) and zone valves or pump relays (if used). 4. Make sure there is oil in tank. 5. Inquire if reset button on burner oi[...]

Omni Waste Oil Boilers Limited Warranty Econo Heat (manufacturer) warrants to the purchaser of Waste Oil Boilers will be free from defects in materi als and workmanship for t he durations specified bel ow, whic h durat i on begi ns on t he dat e of del i very to the customer. C ustomer is responsi ble for mai ntaining proof of date of deli very. If[...]

48 Installation, Operation, And Service Instructions[...]

WARRANTY CARD Please fill our, t ear off and return t o manufactur er Return following warranty in fo rmation to manufacturer within thirty (30) d ays o f purchase or warran ty will not be valid. (Please print or ty pe). Date of Purchase _____________________________________________________________________ Serial #__________________________ Model _[...]