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LCD INSTALLATION AND OPERATION INSTRUCTIONS

Page 32

Heat Exchanger Removal, Cleaning & Replacement - 
See Figure 20 

1.   Close the shut off valves in the inlet and outlet 

piping. On heating systems close the system fi ll 
valve and relieve the system pressure from the 
boiler by carefully lifting the relief valve or opening 
the drain valve.

2.   Drain the boiler/water heater and disconnect it from 

the system piping. 

3.   Remove the inlet/outlet and return headers. 
4.   Remove the jacket front panels. 
5.   Loosen, 4 turns, but 

don’t remove

 the 6 screws, 

(3 on each side) holding the heat exchanger upper 
rails in place, Figure 21. 

6.   Disconnect the gas piping at the ground joint unions. 

Also disconnect the pressure sensing lines, pilot 
tubing and ignition and sensing leads. 

7.  Remove the upper partition panel, 1050 through 

2300 models.

8.   Remove the 1/4 inch nuts and washers holding the 

upper combustion chamber front panel in place and 
carefully remove it. 

9.   Carefully slide the heat exchanger out of the unit. 
10.  Remove the “V” baffl e straps and “V” baffl es.
11.  Thoroughly inspect the heat exchanger for signs of 

damage. If there is no damage, clean the heat 
exchanger with water from a high-pressure hose.  
Use a soft bristle brush if necessary.

Figure 20-Burner and Heat Exchanger Servicing

CAUTION: Never clean the heat exchanger while it’s 
in the boiler/water heater or the combustion 
chamber will be destroyed!

12.  Sagging or distorted heat exchanger tubes are an 

indication of low water fl ow through the system. A 
leaking or otherwise damaged heat exchanger must 
be replaced and the condition that caused the 
damage resolved before the boiler/water heater is 
returned to service. 

13.  If the heat exchanger isn’t damaged rewire the heat 

exchanger baffles in place and slide the heat 
exchanger back into the unit.

14.  Reinstall all of the other components in the reverse 

order of their removal.

15. The torque values for the bolts that secure the 

removable headers are 17-20 ft lbs. Once bolts have 
been started and secured the tightening sequence 
is as follows:

 1) 

Middle 

Top

 2) 

Middle 

Botom

 3) 

Right 

Top

 

4) Left Bottom

 5) 

Left 

Top

 

6) Right Bottom

Содержание LCD Series

Страница 1: ...se gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch Do not...

Страница 2: ...form to the Standard for Controls and Safety Devices for Automatically Fired Boilers ANSI ASME CSD 1 In Canada the installation must be in accordance with the requirements of CSA B149 1 or 2 Installat...

Страница 3: ...acent construction should a leak occur or during routine maintenance If such a location doesn t exist a suitable drain pan that s adequately drained must be installed under the unit 5 DO NOT place thi...

Страница 4: ...the minimum clearances listed in Table 1 must be maintained between it and any combustible construction When installed in a confined space without the intake air option Figures 1 2 3 two permanent op...

Страница 5: ...l Venting using a Masonry Chimney and Inside Air Figure 3 Horizontal Venting using Inside Air Table 2 305 TO 457 127 TO 254 VENT PIPE DIAMETER 5 TO 10 12 TO 18 MINIMUM VERTICAL RISE OFF THE TOP OF UNI...

Страница 6: ...ional area of not less than 1 in2 per 7 000 Btuh 310 mm2 per kW up to and including 1 million Btuh plus 1 in2 per 14 000 Btuh 155 mm2 per kW in excess of 1 million Btuh Intake Air Option General Guide...

Страница 7: ...exhaust and combustion air terminals must be installed on the same plane outside wall in order to prevent pressure differences due to prevailing winds In cold climates double wall or insulated inlet p...

Страница 8: ...on Air and Venting Metal Chimney System Shown Figure 7 Combination Air Intake And Venting Masonry Chimney Shown 10 FT 3 1 m 4 FT 1 2 m 5 FT 1 5 m 1 5 FT 0 5 m 5 1 2 FT 1 7 m 1 5 FT 5m 10 FT 3 1 m 3 FT...

Страница 9: ...venting material must be approved for the application Consult the vent manufacturer s product literature GENERAL VENTING GUIDELINES WARNING The vent installation must be in accordance with Part 7 Ven...

Страница 10: ...nector must terminate flush with the inside of the chimney flue Figure 2 Fasten each single wall vent connection with at least 3 corrosion resistant sheet metal screws WARNING Never install a vent pip...

Страница 11: ...a 4 ft 1 2 m horizontal distance is maintained from electric meters gas meters regulators and relief equipment and not less than 7 ft 2 1 m from any adjacent public walkway The bottom of the vent term...

Страница 12: ...ose all building doors and windows and all doors between the space in which the appliances remaining connected to the common venting system are located and other spaces of the building Turn on clothes...

Страница 13: ...vered under the manufacturer s warranty Excessive pitting and erosion of the internal surface of the copper heat exchanger tubes is NOT covered under the manufacturer s warranty if the result of high...

Страница 14: ...itch The flow switch supplied with the boiler water heater must be wired to the terminal strip in the control panel to prevent the boiler from firing unless there s adequate water flow through the uni...

Страница 15: ...e flow rate required to maintain the desired temperature rise across the boiler heat exchanger The system pump is sized to provide the required flow to the heating system The boiler piping connections...

Страница 16: ...g Check with local codes and ordinances for specific requirements Adjustment Procedure To Maintain Inlet Temperature Above Dew Point T1 Temp Min 110 For Atmospheric T1 Temp Min 125 Sealed Combusion 1...

Страница 17: ...ng must be sized large enough to handle maximum flow through unit 4 All boilers furnished with factory mounted outlet water temperature gauge 5 Boiler pump purging required Use terminals supplied 6 Va...

Страница 18: ...osion of the heat exchanger Water that has a hardness greater than 18 grains per gallon and or a level of dissolved solids exceeding 350 ppm will require a recalculation of the pump size and temperatu...

Страница 19: ...g the warranty The method outlined below can be employed to prevent this condition from occurring A balancing valve should be installed on the outlet side of the water heater for purposes of adjusting...

Страница 20: ...6 Common piping must be sized for maximum combined heater flow 7 Hot water tanks should be equipped with a combination temperature pressure relief valve 8 MA Code requires an 1 8 hole in check valve...

Страница 21: ...valve must be installed in the supply piping It should be installed 5 ft 1 5 m above the floor where required by local codes Provide a sediment trap at the bottom of the vertical section of the gas s...

Страница 22: ...trapped in the heating system piping When applicable provisions for vent bleed and gas relief lines must be made in accordance with the latest revision of ANSI Z223 1 NFPA 54 Safe lighting and other p...

Страница 23: ...Table 13 identifies the stages and firing modes associated with the standard single stage units Table 14 identifies the stages and firing modes associated with the two stage option Table 13 Firing Mod...

Страница 24: ...above The FSM will continue to cycle the unit through steps 3 4 and 6 until the unit lights or the demand for heat is removed Main Burner Once the pilot is proven the MV terminal on the FSM is energi...

Страница 25: ...the flame sense module FSM is energized 2 The FSM starts the 10 second ignition trial energizing relay R7 the pilot solenoid valve and the spark generator 3 The pilot valve and spark generator are en...

Страница 26: ...gas is heavier than air and can collect in low areas Propane gas can ignite or explode if an ignition source is present and result in death serious injury and property damage FOR YOUR SAFETY Have only...

Страница 27: ...should match those listed in Table 15 To adjust the differential air pressure see the AIRFLOW ADJUSTMENT instructions in the CHECKING AND ADJUSTMENTS section Figure 19 Manual Valve Manifold Pressure T...

Страница 28: ...faut proc der l entretien 3 Fermer la vanne manuelle d arr t d alimintation de gaz CHECKING ADJUSTMENTS 1 With the burners in operation close the manual shutoff valve in the gas supply line As soon a...

Страница 29: ...b to the off position Figure 18 3 Observe the pilot flame through one of the observation ports located at the left and right ends of the unit For L600 L2300 1 Remove the upper front jacket panel 2 Tur...

Страница 30: ...pressure switch confirms proper air flow These time delays are set within the separate time delay board connected to the relay board PROPANE GAS Optimum results are obtained when the boiler water heat...

Страница 31: ...lem resolved before the boiler water heater is returned to service 7 If there are no signs of damage sooting or corrosion reassemble the unit following the previous steps in reverse order 8 A badly co...

Страница 32: ...heat exchanger out of the unit 10 Remove the V baffle straps and V baffles 11 Thoroughly inspect the heat exchanger for signs of damage If there is no damage clean the heat exchanger with water from a...

Страница 33: ...ter at normal system pressure If it does contact a qualified service technician to have it inspected NEVER try to clean or repair the relief valve If the valve fails to operate properly have it replac...

Страница 34: ...as From Unit shown in connection diagram No Power To Blower s Blower s not plugged in Plug in blower s Defective blower timer TD3 Replace Blower Timer TD3 Blower s malfunctioning Replace blower s Uni...

Страница 35: ...rating control set too low Increase control temperature setting Unit Consistently Shuts Down High limit set too low Increase high limit setting On High Limit Bad Combustion Insufficient air Check CO C...

Страница 36: ...LCD INSTALLATION AND OPERATION INSTRUCTIONS Page 36 RIOM 23 REV B Figure 23 Exploded View...

Страница 37: ...106 1 1 70 3107 1 1 1 70 3108 1 1 70 3109 1 1 70 3110 1 1 3 Jacket Left Panel 03 2155 1 1 1 1 1 1 1 03 1822 1 1 1 1 Jacket Left Panel SS 03 2155 1 1 1 1 1 1 1 1 03 1822 1 1 1 1 1 4 Junction Box Assemb...

Страница 38: ...1 03 1802 1 03 1803 1 03 1804 1 03 1806 1 03 1807 1 1 03 1808 1 03 1809 1 03 1810 1 Jacket Top Panel SS 03 1801 1 1 1 03 1802 1 1 03 1803 1 1 03 1804 1 1 03 1806 1 1 03 1807 1 1 1 03 1808 1 1 03 1809...

Страница 39: ...1 1 1 1 1 1 Comb Chamber Lower Right Side Panel 70 2773 1 1 1 1 1 1 1 1 1 1 1 18 Comb Chamber Upper Left Side Panel 70 2770 1 1 1 1 1 1 1 1 1 1 1 Comb Chamber Upper Right Side Panel 70 2771 1 1 1 1 1...

Страница 40: ...t Orifice NG 10 0089 1 1 1 1 1 1 1 1 1 1 Pilot Orifice LP 10 0090 1 1 1 1 1 1 1 1 1 1 Pilot Orifice NG 10 0093 1 Pilot Orifice LP 10 0120 1 30 Burner Tube 10 0275 2 3 5 7 9 13 15 17 19 25 27 Burner Tu...

Страница 41: ...4 4 4 6 6 6 NS Heat Exchanger Support Channel 03 2022 1 03 2023 1 03 2024 1 NS Tube Replacement Assembly 70 3080 2 2 70 3081 2 70 3082 2 70 3083 2 70 3085 2 70 3086 2 36 O Ring Inlet Outlet Return Hea...

Страница 42: ...1 1 1 1 1 1 49 Manual Shut Off Valve 1 11 0465 1 1 Manual Shut Off Valve 1 1 4 11 0466 1 1 Manual Shut Off Valve 1 1 2 11 0467 1 1 1 Manual Shut Off Valve 2 11 0454 1 50 Flame Sensor UTC 1003 Ignition...

Страница 43: ...idewall Vent Kit HS5 12 0002K1 1 1 1 NS Sidewall Vent Kit with air intake hood HS1 12 0009K 1 1 Sidewall Vent Kit with air intake hood HS2 12 0010AK 1 Sidewall Vent Kit with air intake hood HS2 12 001...

Страница 44: ...DED IS VENT VERTICAL THROUGH THE ROOF OUTDOOR AIR SENSOR INSTALLED WIRED IS VENT THROUGH THE WALL ARE UNITS RACKED IS POWER VENT INSTALLED AND WIRED IS RACK ASSEMBLED TIGHTLY SEALED COMBUSTION NO HOLE...

Страница 45: ...stion Air Damper Power Vent Proving Switch Barometric Damper COMMISSIONING THE UNIT Customer Instructed Yes No All Covers Replaced Yes No Wiring Secure Tight Yes No Customer Given Manual Yes No Cabine...

Страница 46: ...de wall horizontally vented gas fueled equipment is installed in a crawl space or an attic the hard wired carbon monoxide detector with alarm and battery back up may be installed on the next adjacent...

Страница 47: ...structions for the installation of the venting system design or the venting system components and 2 A complete parts list for the venting system design or venting system d MANUFACTURER REQUIREMENTS GA...

Страница 48: ...hrough the tubes and is not covered by the manufacturer s warranty See Installation Instructions for proper pump performance Chemical corrosion no corrosive chemical freon dry cleaning chemicals degre...

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