Econo Heat OWB-15 Installation & Operation Manual Download Page 21

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Installation, Operation, And Service Instructions

BLU

WHT

OIL

PREHEATER BLOCK

CONTROLLER

WHT

RED

HT
R

PR
I

BLOWER MOTOR

HIGH

VOLTAGE

TRANS-

FORMER

PHOTO EYE

FLAME SENSOR

OIL PRIMARY CONTROL

(IE, Honeywell, etc.)

THERMOSTAT

CONNECTION

500W
HEAT
ROD

Bi
METAL
HIGH
LIMIT
SWITCH

THERMO-
COUPLE

OIL

PREHEATER

BLOCK

Fuse

Power Switch

BLK

WHT

BLU

RED

Power Plug

(Looking at Terminal Side)

Oil Valve

GRN

Power Socket

Electrical Box

(Looking at Socket Side)

Burner Assembly

Thermostat

Circulator

Honeywell

L8148A Aquastat

L1 L2

B1 B2

Jumper

Oil Pump

WHT

BLK

WHT

BLK

Service Switch

Fused Disconnect Switch

GND

(Items Supplied By Installer)

120 VAC

(Supplied By Installer)

Low

Water
Cutoff

Manual

High
Limit

L4006E

RED

WHT

Figure 33. WIRING DIAGRAM, SINGLE HEATING ZONE ONLY, OWB-90, OWB-150, OWB-
350

Summary of Contents for OWB-15

Page 1: ...with proper filtration to the inside supply tank is acceptable 6 The fuel pump included with burner is to be mounted at tank level or below PUMP MUST BE MOUNTED HORIZONTAL AND LOCATED NEXT TO WASTE O...

Page 2: ...ked in the wirebound crate Install in tappings provided at the top rear of the boiler as shown in Figure 13 Figure 13 b Take the boiler drain from the same carton and connect it to the 3 4 inch openin...

Page 3: ...he 2 x 1 1 4 inch bushing which is supplied in the boiler supply and return ports and must provide his own boiler drain and circulating pump 1 Accessories for Boilers OWB 35 and OWB 50 Figure 14 Suppl...

Page 4: ...em is to comply with ASME code 1 Backflow Preventer Required by many State and local codes 3 Additional circulating pumps or zone valves may also be required if the system is to be multi zone or if it...

Page 5: ...e pressure reducing fill valve may be piped with 1 2 inch pipe Figure 17 Closed Type Expansion Tank Supply to System Shutoff Valve Fill Valve Cold Water Feed Return From System Circulation Pump Drain...

Page 6: ...piped to a drain or must terminate 6 above floor to eliminate damage to the structure or personal injury It must not be piped to a point where freezing might occur 1 MULTIPLE ZOINING WITH ZONE VALVES...

Page 7: ...drop below about 135 Degree F for an extended period of time Return water temperatures of 130 Degree F or lower will cause condensation on the exterior surface of the heat exchanger and corrosion and...

Page 8: ...systems that employ outdoor reset control present a potential problem with low return water temperatures and condensation The boiler must be protected from condensation in such cases by using a by pa...

Page 9: ...r output is available to recover the storage tank quickly and should be used where supply of domestic hot water on demand is critical For this application use a full throated valve with a minimum pres...

Page 10: ...t for heating Because the tank is usually close to the boiler the pressure drop through the coil circuit will generally be less than through a heating zone circuit which will provide some measure of p...

Page 11: ...gravity circulation Install a balancing valve in each zone and adjust so that flow in each zone is about the same see Figure 24 While this basic system does not provide priority for domestic hot water...

Page 12: ...iler shall be not less than 1 8 GPM for each 100 000 BTU HR of gross boiler output Size blend pump accordingly See Table 3 Blend Pump Primary Secondary Pump Boiler Model GPM GPM OWB 9 OWB 15 OWB 25 OW...

Page 13: ...e 27 Blend Pump Check Valve System Supply System Circulator Pressure Reduction Valve Backflow Preventer From City Water Supply Expansion Tank System Return Amtrol 720 Air Eliminator or Equal To Size B...

Page 14: ...REVERSE RETURN FLOW WITH BLEND PUMP Figure 28 Blend Pump Check Valve System Supply System Circulator Pressure Reduction Valve Backflow Preventer From City Water Supply Expansion Tank System Return Amt...

Page 15: ...t fill in the space between the burner blast tube and the insulation block on the inside of the burner door with refractory mix provided Burner Mounting Figure 29 OWB 35 and OWB 50 Burner Mounting Boi...

Page 16: ...on top of wraparound insulation This will provide double thick insulation on top of the boiler block 4 Remove flue collector clean out covers 62 5 Push the two smaller pieces of insulation 60 onto th...

Page 17: ...WB 9 OWB 15 and OWB 25 Jacket Installation Instructions 1 Attach the rear jacket mounting brackets 7 to rear tie rod ends on back of boiler using the 12mm nut 9 provided on the end of each tie rod 2 A...

Page 18: ...nel 5 using four 10x1 2 sheet metal screws 9 Attach the flue collector cover 4 using four 10x 1 2 sheet metal screws 10 Press the door switch 16 into the door switch bracket 17 Connect the door switch...

Page 19: ...C2 on the L8148A are not used A DPST Honeywell RA832A may be substituted in place of the R845A using the X and X terminals in place of the 5 and 6 terminals on a R845A A call for heat from any thermos...

Page 20: ...nnections 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 terminal TH TR has no internal connection on the zone valv...

Page 21: ...ATER BLOCK Fuse Power Switch BLK BLK WHT WHT RED WHT WHT WHT RED BLU RED Power Plug Looking at Terminal Side BLK Oil Valve BLK GRN Power Socket Electrical Box Looking at Socket Side Burner Assembly Th...

Page 22: ...K BLK WHT WHT RED WHT WHT WHT RED BLU RED Power Plug Looking at Terminal Side BLK Oil Valve BLK GRN Power Socket Electrical Box Looking at Socket Side Burner Assembly N H Oil Pump WHT BLK WHT YEL Serv...

Page 23: ...23 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 FACTO...

Page 24: ...n exit the system through a hose as in 1 above When system seems to be full and free of air close the drain cock and the shutoff valve on the boiler supply pipe leaving the manual valve on the cold wa...

Page 25: ...Oil Primary This will allow the burner to run during the pump priming process 9 Priming the oil pump Open bleeder valve one turn until all air is expelled Figure 4 This may need to be done twice to i...

Page 26: ...ng connections to ensure there are no flue gas leaks Seal any leaks found with High Temperature Silicone Sealant 6 Check flue gas temperature at the test point in the breeching If gross flue gas tempe...

Page 27: ...ion And Service Instructions 27 Figure 37 Electrode Adjusment Diagram Figure 38 Nozzle Assembly Detail When cleaning inspect all three pieces thoroughly When disassembling and reassembling nozzle keep...

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