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UTICA BOILERS UB90 125, Инструкция по установке, эксплуатации и обслуживанию

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31

DRAFT INDUCER TEMPERATURE SAFETY SWITCH

if draft  inducer temperature reaches temperature safety switch 
set-point, safety switch contacts open immediately, closing gas 
valve 

(light goes out)

.

Draft  inducer runs through 30 second post purge and switches 
OFF.

Circulator runs with thermostat on call for heat.

When temperature safety switch contacts remake before end of 
call for heat, control goes into normal light-off  sequence.

LOSS OF COMBUSTION AIRFLOW

If combustion airfl ow is lost while burner is fi ring (Diff erential 
air pressure switch contacts open) gas valve will be de-
energized. 

Valve and fl ame lights go out.

Draft  inducer runs through 30 second post purge.

If call for heat remains, IBC waits 5 minutes for airfl ow to be 
re-established.

If airfl ow does not re-establish control lockout - problem with 
combustion airfl ow. 

Purge light blinks

. Control will 

automatically reset aft er 15 minutes.

LOSS OF FLAME SIGNAL

if an established fl ame signal is lost while control expects that 
the burner is operating, control will immediately de-energize 
gas valve. 

Valve and fl ame lights go out.

Draft  inducer runs through 30 second post purge.

Control will attempt to relight boiler 3 times. if fl ame is not 
proven, control lockout - problem establishing a fl ame signal. 

Valve light is blinking

. Control will automatically reset 

aft er 1 hour.

HIGH LIMIT CONTROL

if boiler water temperature reaches high limit (aquastat) 
setpoint, high limit n.c. contacts open immediately, closing gas 
valve. 

Valve and fl ame lights go out.

Draft  inducer continues to run for 30 second post purge and 
switch OFF.

Circulator runs as long as thermostat calls for heat.

When high limit contacts remake before end of call for heat - 
control goes into a normal light-off  sequence.

CASTING TEMPERATURE SAFETY SWITCH

If burner operates when boiler has no water, aluminum boiler 
sections heat up rapidly.

Casting temperature safety switch contacts will open, breaking 
24 volt power to ibc. power indicator light goes out. Requires 
manual reset to re-close contacts.

 Power light goes out.

CIRCULATOR PUMP

Circulator will be energized as long as thermostat calls for heat 
during lockout.

Recovery from any lockout requires reset, which can be 
accomplished by:

(a) Removing and reestablishing the thermostat’s call for heat 
or turning the service switch off  and back on; 
                                             or 
(b) Waiting for the control to automatically reset aft er 15 
minutes for loss of combustion airfl ow or one hour for loss of 
fl ame.

DETAILED SEQUENCE OF OPERATION

Содержание UB90 125

Страница 1: ... 11 UB90 125 200 GAS FIRED DIRECT VENT CONDENSING HOT WATER BOILER INSTALLATION OPERATION MAINTENANCE MANUAL An ISO 9001 2008 Certified Company Utica Boilers 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com ...

Страница 2: ...potential hazards of varying risk levels KEEP THIS MANUAL NEAR BOILER AND RETAIN FOR FUTURE REFERENCE NOTICE Indicates information which should be followed to ensure proper installation and operation Safety Symbols 2 Rules For Safe Installation And Operation 3 Boiler Ratings Capacities 4 Before Installing The Boiler 5 Placing The Boiler 9 Near Boiler Piping 10 Combustion Air And Vent Pipe 13 Gas S...

Страница 3: ...nents This may cause dangerous operation Under firing may result in too much air for the pre mix burner causing poor or loss of combustion Never vent the products of combustion from this boiler 5 to an enclosed space Always vent to the outdoors Never vent to another room or to inside a building Be sure there is adequate outdoor air supply to boiler 6 for complete combustion Follow a regular servic...

Страница 4: ... 196 500 172 400 172 200 147 800 147 400 123 500 123 000 2 000 194 000 193 000 169 800 169 400 145 600 144 800 122 000 121 000 3 000 191 000 189 500 167 200 166 600 143 400 142 200 120 500 119 000 4 000 188 000 186 000 164 600 163 800 141 200 139 600 119 000 117 000 5 000 185 000 182 500 162 000 161 000 139 000 137 000 117 500 115 000 6 000 182 000 179 000 159 400 158 200 136 800 134 400 116 000 1...

Страница 5: ...as gas fired direct vent condensing hot water boilers Heating Capacity indicates amount of heat available after subtracting losses up the stack Most of this heat is available to heat water Small portion is heat loss from jacket and surfaces of boiler it is assumed this heat stays in the structure Net I B R Rating represents portion of remaining heat applied to heat radiation or terminal units i e ...

Страница 6: ...or external condensate pump with reservoir at per foot 21 mm m wood frame or blocks may be used to raise boiler Locating The Boiler Select location which is level central to piping systems 1 served and as close to vent and air intake terminals as possible Accessibility clearances if more stringent i e larger 2 clearances than required fire protection clearances must be used for boiler installation...

Страница 7: ... dripping spraying rain etc during operation and service circulator replacement condensate trap control replacement etc Boiler must be located where ambient temperatures 8 minimum possible room temperatures where boiler is installed assuming boiler is not in operation and therefore contributes no heat to space are always at or above 32 F 0 C to prevent freezing of liquid condensate Combustion Air ...

Страница 8: ...lated with 1 2 armaflex or equivalent In extremely cold climate areas use 3 4 armaflex or equivalent Combustion air must be clean outdoor air Combustion air must not be taken from inside structure because that air is frequently contaminated by halogens which include fluorides chlorides phosphates bromides and iodides These elements are found in aerosols detergents bleaches cleaning solvents salts ...

Страница 9: ...ate at maximum speed Do not operate a summer exhaust fan Close fire dampers Place in operation the appliance being inspected 4 Follow the lighting instructions Adjust thermostat so appliances will operate continuously Test for spillage at the draft hood relief opening after 5 5 minutes of main burner operation Use the flame of a match or candle or the smoke from a cigarette cigar or pipe After it ...

Страница 10: ...ons U S Size expansion tank accordingly Consult expansion tank manufacturer for proper sizing information Connect properly sized expansion tank not furnished as shown in Figure 6 for diaphragm type expansion tank For diaphragm type expansion tanks adjust the tank air pressure to match the system fill pressure Install air vent furnished as shown for diaphragm type expansion tank system only Install...

Страница 11: ... Single Zone Boiler Piping Figure 9B Multi Zone Boiler Piping With Zone Valves Figure 9A Multi zone Boiler Piping with Circulators Individual boiler discharge piping shall be independent of other discharge piping Size and arrange discharge piping to avoid reducing safety relief valve relieving capacity below minimum relief valve capacity stated on rating plate Run pipe as short and straight as pos...

Страница 12: ...a use CSA or ULC certified schedule 40 PVC drain pipe and cement Condensate pump with reservoir not furnished may be used to remove condensate to drain line sanitary line above boiler if floor drain is not available or is inaccessible Filling Condensate Trap With Water NOTICE On initial start up the condensate trap must be manually filled with water Following are steps required to initially fill c...

Страница 13: ...is unit of CSA or ULC certified schedule 40 CPVC schedule 40 PVC PVC DWV or ABS DWV pipe and pipe cement SDR pipe is NOT approved in Canada For Canadian installations all plastic venting material must be listed to ULC S636 Combustion air and vent piping connections on boiler 3 are 2 but must increase to 3 Due to potential for flue gas temperatures over 155 F first 5 feet of vent pipe must be CPVC ...

Страница 14: ...ere vent vapors will not damage plants shrubs air conditioning equipment or siding on the house Termination should be positioned so that it will not be effected by wind eddy air born leaves snow or recirculated flue gases Termination should be positioned where it will not be subjected to potential damage by foreign objects such as stones balls etc Termination should be positioned where vent vapors...

Страница 15: ...ty having jurisdiction or in the absence of such requirements United States National Fuel Gas Code ANSI Z223 1 NFPA 54 Canada Natural Gas and Propane Installation Code CAN CSA B149 1 Use pipe joint compound suitable for liquefied 2 petroleum gas on male threads only Use ground joint unions 3 Install sediment trap upstream of gas controls 4 Use two pipe wrenches when making connection to 5 gas valv...

Страница 16: ...located on exterior boiler jacket See Figure 13 for diagram showing location of service switch junction box and power supply connection points Connect black hot lead from power supply to either of unused brass screws on service switch Connect white neutral lead from power supply to white screw on service switch Connect green ground lead from power supply to ground green screw on service switch Rec...

Страница 17: ...ctions If the two 120 volt circulator wire terminals inside the junction box are not used please leave the two wire nuts to prevent the short circuit CAUTION Label all wires prior to disconnection when servicing controls Wiring errors can cause improper and dangerous operation Verify proper operation after servicing Run 14 gauge or heavier copper wire from boiler to grounded connection in service ...

Страница 18: ...6 BLOWER G 2 4 3 1 P5 W BK CASTING TEMPERATURE SAFETY SWITCH MANUAL RESET BR BL W V BR SET AT 3 5 WC SWITCH N C AIR PRESSURE DIFFERENTIAL CONTROL HI LIMIT AQUASTAT SET AT 0 5 WC BL BR AIR PRESSURE DIFFERENTIAL SWITCH N O V CIRCULATOR 2 4 3 1 P4 9 3 6 Y 24 VAC SECONDARY TRANSFORMER 1 4 7 8 5 2 BR CONTROL P3 1 2 V 1 3 P2 Y 2 Y 1 1013 10 INTEGRATED BOILER CONTROL W BK NOTE USE COPPER CONDUCTORS ONLY ...

Страница 19: ... 3K 5K GAS VALVE 4K1 3K1 P3 5 24 VAC 4 5 P2 2 P3 2 BLOWER P5 1 1K1 P10 1 2K1 P7 1 P4 1 TRANSFORMER P1 1 120 VAC 3 P1 3 1 HOT SURFACE IGNITER P12 1 P6 1 5K1 P12 2 5K2 P6 2 P10 3 CIRCULATOR FIELD WIRED P5 3 P10 2 P7 3 P4 3 P7 2 NOTE USE COPPER CONDUCTORS ONLY ON OFF BLK HOT L1 WHT L2 SWITCH 120 VOLT POWER SUPPLY NOTE If any of the original wire as supplied with this appliance must be replaced it mus...

Страница 20: ...igure 16 will blink indicating the failure mode as a lack of flame signal The IBC is manually reset from lockout by either removing and reestablishing the thermostat s call for heat or by turning the service switch off then back on High Limit Aquastat Control The high limit aquastat control determines the maximum boiler water temperature and also provides a means for protecting the boiler and heat...

Страница 21: ... valve discharge must be piped with the same size as the valve discharge opening to an open drain tub or sink or other suitable drainage point not subject to freezing in accordance with A S M E specifications Failure to provide the pressure relief valve with piping as herein described may cause water damage and or serious bodily injury The boiler manufacturer is not responsible for any water damag...

Страница 22: ... type 356 T6 aluminum Use of incompatible antifreeze could damage the heat exchanger and will void the product warranty Antifreeze must be maintained per specifications of manufacturer Failure to do so will result in warranty being voided Follow antifreeze manufacturer s instructions on determining proper ratio of antifreeze to water for expected low temperature conditions and for maintaining anti...

Страница 23: ...t turn by hand do not try to repair it call a qualified service technician Force or attempted repair may cause fire or explosion Do not use this appliance if any part has been under 4 water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas control which has been under water Operating Instructions STOP 1 Read the safet...

Страница 24: ...y piping section in this manual Check for orifice in negative pressure hose at gas valve and 2 air intake pipe upstream of 3 gas valve Relight boiler 4 If boiler still does not light the air inlet pipe may need to be disconnected to allow the 5 boiler to start in order to verify the boiler firing rate and combustion properties The inlet air pipe can be disconnected by removing the pvc inlet air pi...

Страница 25: ...on port on the boiler A z B C z D E 6 After the igniter warm up period the integrated boiler control energizes the gas valve initiating a 6 second trial for ignition mode which is indicated by the illumination of Lamp D Two seconds later Lamp C will extinguish when the integrated boiler control stops sending power to the hot surface igniter A z B C z D z E 7 A low level illumination of Lamp E indi...

Страница 26: ... manual reset high limit or additional safety controls test for operation as outlined by the control manufacturer Burner should be operating and should go off when controls are tested When safety controls are restored burner should reignite Set Thermostat Heat Anticipator If Used And Verify Thermostat Operation For a single thermostat connected to the yellow thermostat lead wires in the furnished ...

Страница 27: ...re should read between 4 and 10 w C For natural gas and between 10 and 14 w c For propane gas Drill a hole in the plastic CPVC combustion analyzer 2 Turn the thermostat to the closed position so the appliance is activated 3 Allow the appliance to run for approximately 5 minutes 4 Insert the sample probe of your combustion analyzer into the hole you drilled in step 2 above about 5 halfway into the ...

Страница 28: ...eakage and tighten G bolts or replace gaskets if necessary Remove jacket front and top panels and check for H piping leaks around relief valve and other fittings Repair if found DO NOT use stop leak compounds Check that boiler area is free from combustible 2 materials gasoline and other flammable vapors and liquids Circulator pump and blower motor furnished with 3 boiler are permanently lubricated...

Страница 29: ...praying or running water Use a flexible handle nylon brush to loosen I sediment and aluminum oxide on all exposed heating surfaces of boiler see Repair Parts Manual for diagram Be sure that brush does not get stuck in heat exchanger After brushing and rinsing remove any remaining J loosened sediment using a shop vacuum with a snorkel attachment Inspect burner for any foreign matter in the flame K ...

Страница 30: ...30 SERVICE HINTS DETAILED SEQUENCE OF OPERATION ...

Страница 31: ...ontrol will attempt to relight boiler 3 times if flame is not proven control lockout problem establishing a flame signal Valve light is blinking Control will automatically reset after 1 hour HIGH LIMIT CONTROL if boiler water temperature reaches high limit aquastat setpoint high limit n c contacts open immediately closing gas valve Valve and flame lights go out Draft inducer continues to run for 3...

Страница 32: ...at Gas valve and circulator pump are de energized valve and flame lights go out Blower runs for 30 seconds post purge purge light is on Blower is de energized after 30 seconds purge light shuts off Boiler stand by for next call for heat DETAILED SEQUENCE OF OPERATION ...

Страница 33: ...evere injury or death Do not attempt to modify the physical or electrical characteristics of this boiler in any way NOTICE In a reset from lockout condition all electrical meter readings at the gas control valve 24 vac must be taken within the trial for ignition period If any component dose not function properly make sure it is correctly installed and wired before replacing it Static electricity d...

Страница 34: ...FF Off during purge cycle draft inducer is not powered on or air flow is not proven Off during igniter and run cycle normal operation purge cycle complete Blinking IBC is locked out Problem could indicate false positive proof of air flow Blocked vent intake air pipe flue way or orifice in negative pressure hose IGNITER ON IBC is energizing igniter OFF Igniter is not energized VALVE ON IBC is energ...

Страница 35: ...the gas supplier s instructions If you can not contact your gas supplier call the fire department Should overheating occur or the gas supply fail to shut off do not turn off or disconnect the electrical supply to the pump Instead shut off the gas at a location external to the appliance Do not use the boiler if any part of the gas control system has been under water A qualified service technician s...

Страница 36: ...36 Troubleshooting Chart 2 TROUBLESHOOTING ...

Страница 37: ...R SAGS OR LOW SPOTS WHERE CONDENSATE MAY PUDDLE AND BLOCK THE VENT YES CHECK AIR PRESSURE SWITCH PER INSTRUCTIONS ON FOLLOWING PAGES ARE SAMPLING LINES CLEAR AND CONNECTED PROPERLY NO CLEAN OUT SAMPLING LINES OR REPLACE DEFECTIVE SWITCH YES CHECK FLUE PASSAGES IN BOILER PER MAINTENACE AND CLEANING ARE FLUE PASSAGES IN BOILER CLEAN NO CLEAN BOILER FLUE PASSAGES PER MAINTENANCE AND CLEANING INSTRUCT...

Страница 38: ...ER LIGHT CHECK FOR 24 VAC ACROSS TERMINALS MV ON THE GAS CONTROL WHILE VALVE FLAME INDICATOR LIGHT IS ON NO NO CHECK FOR 24 VAC ACROSS TERMINALS CN6 2 AND CN6 5 ON IBC WHILE THE VALVE FLAME LED IS LIT NO REPLACE IBC YES REPAIR REPLACE WIRING BETWEEN IBC AND GAS CONTROL YES CHECK IF IGNITER SENSOR POSITION IS OK TIP SHOULD BE SLANTED TOWARDS BURNER RESTORE IGNITER SENSOR TO CORRECT POSITION DO NOT ...

Страница 39: ...39 Troubleshooting Chart 5 TROUBLESHOOTING ...

Страница 40: ...FIC INSTRUCTIONS REQUIRES SPECIFIC TOOLS NO YES REPLACE BURNER REPLACE IBC BOILER SHUTS OFF BEFORE END OF CALL FOR HEAT ARE HI LIMIT AQUASTAT CONTACTS CLOSED NO BOILER OFF ON HIGH LIMIT IS ACTUAL BOILER WATER TEMP GREATER THAN HI LIMIT SET POINT MINUS 30 F CONTROL DIFFERENTIAL NO NO REPLACE AQUASTAT OK YES SEE TROUBLESHOOTING PATH 2 ABOVE CHART 5 NO 3 CHART 5 YES SET THERMOSTAT BELOW ROOM TEMPERAT...

Страница 41: ...es Blockage or moisture in suction lines to switch Blockage or moisture in orifice installed in suction lines to switch Blockage in air intake or vent pipes Undersized air intake or vent pipes Loose blower wheel on motor shaft Incorrect pressure switch or pressure switch set point Gas valve out of adjustment When the pressure reading corresponds to the chart 6 at right and the pressure switch is o...

Страница 42: ...42 This Page Intentionally Left Blank ...

Страница 43: ...nd Service issues reviewed with owner maintenance person Installation booklet affixed on or adjacent to boiler Installer Company __________________________________________ Address ___________________________________________________ Phone _____________________________________________________ Installer s Name _____________________________________________ Signature ___________________________________...

Страница 44: ...UTICA BOILERS 2201 Dwyer Avenue Utica NY 13501 web site www ecrinternational com ...

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