SlimFit 550-750 User Manual
Contents
1. F SUPPLY HHH F RETURN HHH F OUTDOOR HHH F DEMAND F PUMPS H H H H ADD L HEAT DEMAND FER SETTINGS SELECTAY x PREVIOUS ENTER Screen will show solid red with the exclamation mark symbol if a non shutdown failure occurs i e failure of a non critical sensor such as outdoor or system supply or return sensor Time and date 2 Status graphic 3 Firing rate bar 4 Operating status Active system O lt Move selection up D lt Move selection down Q o D lt ____ e B lt Next screen a lt Previous screen a lt Enter lt Time and date lt Active system type lt Firing rate lt Setpoint temperature lt Supply temperature lt Return temperature lt lt Outdoor air temperature Systems with heat demand lt Pumps operating lt ON or OFF lt Select to change settings lt Scroll up or down lt Previous screen or ENTER UC5002 user m WEIL McLAIN MM DD YY HH MM AM NO BACKLIGHT STANDBY Pressing any button changes background to blue below m WEIL McLAIN HH MM AM MM DD YY BLUE BACKLIGHT PURPLE BACKLIGHT DHW HEATING Domestic hot water heating RED BACKLIGHT Alternating 4 colors mm UJENL Mc LAIN MM DD YY HH MM AM NO BACKLIGHT BOILER IN LOCKOUT Attention re2. Follow TO TURN OFF GAS TO APPLIANCE of the Operating Instructions Fig ure 1 page 4 DO NOT drain the system unless exposure to freezing temperatures will occur DO NOT drain the system if it is filled with an antifreeze solution DO NOT shut down boilers used for domestic water heating They must operate year round 15 SlimFit GAS FIRED WATER BOILER User s Information Manual Weil McLain a 500 Blaine Street C Michigan City IN 46360 2388 http www weil mclain com 16 Part number 550 100 088 0814
3. by a qualified service technician In addition the maintenance and care of the boiler listed on Figure 5 page 9 and explained in this manual must be performed to assure maximum boiler efficiency and reliability Failure to service and maintain the boiler and system could result in equipment failure causing possible severe personal injury death or substantial property damage Part number 550 100 088 0814 SlimFit GAS FIRED WATER BOILER User s Information Manual Maintenance procedures DAILY Check the boiler area AWARNING To prevent potential of severe personalin Jury death or substantial property dam age eliminate all materials discussed below from the boiler vicinity and from the vicinity of boiler combustion air inlet If contaminants are found Immediately remove products from the area If they have been there for an extended period call a qualified service technician to inspect the boiler for possible damage from acid corro sion If products cannot be removed im mediately call a qualified service technician to re pipe vent and air piping and locate vent termination air intake away from contaminated areas Combustible flammable materials Do not store combustible materials gasoline or any other flammable vapors or liquids near the boiler Remove im mediately if found Air contaminants Products containing chlorine or fluorine if allowed to contaminate the boiler intake
4. fill trap Call your qualified service technician to inspect the boiler and condensate line and refill the condensate trap if problem persists regularly AWARNING Under some circumstances an SlimFit vent system may not produce enough condensate to keep the condensate trap full of liquid If the trap is not full small amounts of flue products can be emitted into the boiler room through the condensate drain line or tee Follow procedure below to fill trap 3 Verify that the condensate drain line is unobstructed by slowly pouring water into the top of the PVC tee on the side of the boiler The water should run out the end of the con densate drain line If the water does not run out call your qualified service technician to inspect the boiler and clean or replace the condensate drain line 4 To fill the condensate trap if necessary temporarily plug the end of the condensate drain line Then slowly pour water into the 1 inch plastic tee on boiler right side Pour until water fills drain line then overflows into the boiler trap tubing When water fills up to top of 1 inch tee stop filling Remove temporary plug from end of condensate drain line Check automatic air vents if used Au B 1 See illustration at right 2 Remove the cap from any automatic air vent in the system and check operation by depressing valve B slightly with the tip of a screwdriver 3 If the air vent valve appears to be working freely an
5. m WENL Mic LAIN Slima Commercial Condensing User s Gas fired water boilers u Models 550 and 750 only Information Manual CERTIFIED If the information in this manual is not followed exactly a fire or explosion may result causing property damage personal injury or loss of life Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance e Do not touch any electrical switch do not use any telephone in your building e Immediately call your gas supplier from a neighbor s telephone Follow the gas supplier s instructions e f you cannot reach your gas supplier call the fire department Installation amp service must be performed by a qualified installer service technician or the gas supplier Part number 550 100 088 0814 SlimFit GAS FIRED WATER BOILER User s Information Manual How to use this manual Learn precautions Warnings and definitions Start or shutdown the Use the OPERATING INSTRUCTIONS Boiler components amp These illustrations and callouts will show you the location the U Control display of main components and use of the U Control display Read the list of air contaminants you must avoid Prevent air If found either remove the products permanently or have contamination your installer relocate boiler vent and air t
6. to crack Part number 550 100 088 0814 SlimFit GAS FIRED WATER BOILER User s Information Manual OPERATING INSTRUCTIONS Figure 1 Operating instructions FOR YOUR SAFETY READ BEFORE OPERATING If you do not follow these instructions exactly a AWARNING fire or explosion may result causing property damage personal injury or loss of life A This appliance does not have a pilot Itis C Use only your hand to turn the gas equipped with an ignition device which control knob Never use tools If the automatically lights the burner Do not knob will not turn by hand don t try to try to light the burner by hand repair it call a qualified service technician Force or attempted repair Before OPERATING smell all around the may result in a fire or explosion appliance area for gas Be sure to smell next to the floor because some gas is Do not use this appliance if any part heavier than air and will settle on the has been under water Immediately floor See below 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 WHAT TO DO IF YOU SMELL GAS Donottrytolight any appliance e Immediately call your gas supplier from a neighbor s phone Follow the Do not touch any electric switch do not gas supplier s instructions use any phone in your building If you cannot reach your gas supplier call the fire department
7. water cutoff SERVICE light is on contact your service technician im mediately 9 Replace the jacket door and rotate the two top latches clockwise to secure in place DIRECT VENT installations The jacket door must be securely sealed See the WARNING on page 11 Check U Control date and time 1 Check the time shown on the U Control display see Figure 3 page 6 2 If time is incorrect set the correct date and time as shown in Figure 3 page 6 Part number 550 100 088 0814 13 SlimFit GAS FIRED WATER BOILER User s Information Manual Maintenance procedures EVERY 6 MONTHS Perform DAILY and MONTHLY procedures plus the following additional procedures Check the boiler water and gas piping 1 Perform gas leak inspection per steps 1 through 7 of the Operating Instructions Fig ure 1 page 4 2 If gas odor or leak is detected immediately shut down boiler following procedures in the Operating Instructions Figure 1 page 4 Call a qualified service technician 3 Visually inspect for leaks around internal water piping Also inspect external water pip ing circulators relief valve and fittings Immediately call a qualified service technician to repair any leaks AWARNING Have leaks fixed at once by a qualified service technician Failure to comply could result in severe personal injury death or substantial property damage 4 Reinstall the jacket door securely after inspections DIREC
8. De operatine inssrRucrions M G l G l 1 Stop Read the safety information at left on this label This appliance is COED as valve eguipped with an ignition device which automatically lights the burner Do not try to light the burner by hand Set room thermostat s to lowest setting Verify external manual gas cockis to OPEN open valve handle parallel to gas piping Turn OFF all electrical power to the appliance two rotary latches at top of access door counterclockwise to release oor Remove boiler access door by tilting forward and lifting up Turn boiler manual gas valve knob counterclockwise v to open gas supply Wait five 5 minutes to clear out any gas Then smell for gas including near the floor If you smell gas STOP Follow B in the safety information to the left Ifyou don t smell gas go to the next step 11 If the appliance will not operate when there is a call for heat and Turn ON all electrical power to the appliance piping is not hot follow the instructions To Turn Off Gas To Set thermostat s to desired setting Appliance below and call your service technician or gas The Ultra display will show symbols and text describing the status of the supplier boiler as it proceeds through its operating sequence Standby status means 12 Replace jacket front panel Make sure panel is seated firmly in there is no call for heat A faucet or flame symbol on the display means the place and all joints are visuall
9. T VENT installations The jacket door must be securely sealed See the WARNING on page 11 Operate the relief valve 1 Before proceeding verify that the relief valve outlet has been piped to a safe place of dis charge avoiding any possibility of scalding from hot water AWARNING To avoid water damage or scalding due to valve operation a metal discharge ine must be connected to relief valve outlet and run to a safe place of disposal This discharge line must be installed by a qualified heating installer or service technician in accordance with the instructions in the SlimFit Boiler Manual The discharge line must be terminated so as to eliminate possibility of severe burns or property damage should the valve discharge 2 Read the boiler pressure temperature gauge to make sure the system is pressurized Lift the relief valve top lever slightly allowing water to relieve through the valve and discharge piping 3 If water flows freely release the lever and allow the valve to seat Watch the end of the relief valve discharge pipe to ensure that the valve does not weep after the line has had time to drain If the valve weeps lift the seat again to attempt to clean the valve seat If the valve continues to weep afterwards contact your qualified service technician to inspect the valve and system 4 If water does not flow from the valve when you lift the lever completely the valve or dis charge line may be blocked Immediately shut dow
10. air will cause acidic condensate in the boiler This will cause significant damage to the boiler if allowed to con tinue Read the list of potential materials listed on page 4 of this manual If any of these products are in the room from which the boiler takes its combustion air they must be removed immediately or the boiler combustion air and vent termina tion must be relocated to another area Check the pressure temperature gauge l Make sure the pressure reading on the boiler pres sure temperature gauge does not exceed 80 psig or no higher than the 5 psig less than the relief valve setting Contact a qualified service technician if pressure is too high Part number 550 100 088 0814 DIRECT EXHAUST installations Verify combustion air openings are clear and flue is unobstructed 1 DIRECT EXHAUST INSTALLATIONS air piped to the boiler from outside a Visually inspect all combustion air openings b Remove any debris or blockage from combustion air louvers AWARNING The combustion air openings must be unobstructed This is the means for combustion and ventilation air to be drawn into the boiler room Failure to provide proper combustion air can result in severe personal injury death or substantial property damage 2 Verify that boiler vent discharge is clean and free of obstructions 3 Remove any debris on the flue exhaust openings 4 If removing the debris does not allow the boiler to operate corre
11. ctly afterwards contact your qualified service technician to inspect the boiler and vent air systems DIRECT VENT installations Verify boiler front door is securely closed and vent air terminations are unobstructed 1 DIRECT VENT INSTALLATIONS air piped to the boiler from outside c Visually inspect the boiler jacket door to be sure it is sealed all around its perimeter d Verify that the two rotary latches on top are tight e Re install the jacket door after service or maintenance The boiler jacket door must be securely fastened to the boiler AWARNING y to prevent boiler from drawing air from inside the boiler room This is particularly important if the boiler is located in the same room as other appliances Failure to keep the door securely fastened could result in severe personal injury or death Contact your installer or technician immediately if the jacket door does not fit correctly in place or if the door gaskets are damaged 2 Verify that boiler vent discharge and air intake are clean and free of obstructions 3 Remove any debris on the air intake or flue exhaust openings 4 If removing the debris does not allow the boiler to operate correctly afterwards contact your qualified service technician to inspect the boiler and vent air systems 11 SlimFit GAS FIRED WATER BOILER User s Information Manual Maintenance procedures MONTHLY Perform DAILY procedures plus the following add
12. d not leaking re place cap A twisting all the way on 4 Loosen cap A one turn to allow vent to operate U050 5 Have vent replaced if it does not operate correctly Part number 550 100 088 0814 SlimFit GAS FIRED WATER BOILER User s Information Manual Maintenance procedures PERIODICALLY Perform DAILY procedures Figure 6 Low water cutoff plus the following additional procedures Test the low water cutoff 1 Remove the boiler jacket door by rotating the two latches on top of the boiler counterclockwise Then lt OW WATE R i lift the jacket door up and off iter CUTOF 2 Locate the low water cut off in the upper right of the boiler see Figure 6 at right and Figure 2 page 5 3 Press the TEST button Hold the button for at least 5 seconds Any shorter time will result in STATUS an automatic reset instead of a manual reset O 4 The green STATUS light should change to red indicating a low water condition ORI i 5 The SlimFit boiler s U Control will shut down the MAL CALL FOR boiler on manual reset RED SERVICE LOW WATER 6 The U Control display will flash red as shown in Figure 4 page 7 7 Select MANUAL RESET to reset the control 8 The boiler should return to normal operation AWARNING If the low water cutoff fails to cause a manual reset lockout condition immedi ately turn off all power to the boiler and contact your boiler technician AWARNING Ifthe low
13. erminations to an uncontaminated area Maintain the boiler using the schedule in this manual Maintain the boiler Schedule an annual start up by a gualified service technician before every heating season Hazard definitions The following defined terms are used throughout this manual to bring attention to the presence of hazards of various risk levels or to important information concerning the life of the product yaa Indicates presence of hazards that will cause severe personal injury death or substantial property damage AWARNING Indicates presence of hazards that can cause severe personal injury death or substantial property damage ACAUTION Indicates presence of hazards that will or can cause minor personal injury or property damage NOTICE Indicates special instructions on installation operation or maintenance that are important but not related to personal injury or property damage Boiler service and maintenance The Boiler manual is for use only by a gualified heating installer service technician Refer only to this User s Information Manual for your reference Improper installation adjustment alteration service or maintenance can cause property damage personal injury exposure to hazardous materials or loss of life Installation and service must be performed by a gualified installer service agency or the gas supplier who must read and follow the supplied instructions before installing servicing or removing
14. guired to restart boiler Part number 550 100 088 0814 SlimFit GAS FIRED WATER BOILER User s Information Manual Resetting the U Control Figure 4 U Control display turns red when boiler locks out select MANUAL RESET to reset boiler as shown below NOTICE Screen background color alternates from RED to no backlight gray screen SEE TOP LINE OF DISPLAY FOR ERROR ALTERNATING SCREENS r Select MANUAL RESET to reset condition Make sure to correct the cause of the problem if possible U5003 user To reset Press the DOWN or RIGHT arrow The display will go to the STATUS screen SETTINGS will be highlighted e Press the DOWN arrow to move down to MANUAL RESET e Press ENTER center button e The display will switch to the manual reset screen indicating what caused the shutdown Press ENTER to reset the U Control The U Control will than return to normal operation if the condition has been corrected Part number 550 100 088 0814 7 SlimFit GAS FIRED WATER BOILER User s Information Manual Prevent combustion air contamination If the boiler combustion air inlet is located in any area likely to cause contamination or if products which would contaminate the air cannot be removed you must have the combustion air and vent re piped and terminated to another location Contaminated combustion air will damage the boiler
15. itional procedures Check vent piping 1 Visually inspect the flue gas vent piping for any signs of blockage leakage or deterioration of the piping Notify your qualified service technician at once if you find any problem AWARNING Failure to inspect the vent system as noted above and have it repaired by a qualified service techni cian can result in vent system failure causing severe personal injury or death Check air piping DIRECT VENT installations 1 Visually inspect the air inlet to be sure it is unobstructed Inspect entire length of air piping to ensure piping is intact and all joints are properly sealed 2 Call your qualified service technician if you notice any problems Check the relief valve 1 Inspect the boiler relief valve and the relief valve discharge pipe for signs of weeping or leakage 2 Ifthe relief valve often weeps the expansion tank may not be working properly Immediately contact your qualified service technician to inspect the boiler and system Check the condensate drain system 1 While the boiler is running check the discharge end of the condensate drain tubing and the open top of the condensate tee at the boiler see Figure 2 page 5 for locations Make sure no flue gas is escaping from the condensate drain tubing or tee by holding your fingers in front of the opening 12 2 Ifyou notice flue gas escaping this indicates a dry conden sate drain trap See step 4 for procedure to
16. maintenance schedules OWNER MAINTENANCE see the following pages for instructions BEGINNING OF SEASON MONTHLY PERIODICALLY EVERY 6 MONTHS END OF SEASON Contact your boiler service technician to inspect service and start up your boiler You must have an annual start up performed by a qualified service technician to ensure reliable operation of the boiler and system Check boiler area Check air openings Check pressure temperature gauge Verify boiler front door is secure Check vent piping Check air piping Check relief valve Check condensate drain system Check automatic air vents if used Test low water cutoff Check time and date on the U Control display Check boiler piping gas and water Operate relief valve Shut boiler down unless boiler used for domestic water Follow the service and maintenance procedures given throughout this manual and in component literature shipped with the boiler Failure to perform the service and maintenance could result in damage to the boiler or system Failure to follow the directions in this manual and component literature could result in severe personal injury death or substantial property damage Part number 550 100 088 0814 SlimFit GAS FIRED WATER BOILER User s Information Manual Maintenance and service overview The boiler must be serviced amp maintained The boiler must be inspected and started annually at the beginning of the heating season
17. n the boiler following the operating instructions on page 9 Call your qualified service technician to inspect the boiler and system 14 Part number 550 100 088 0814 SlimFit GAS FIRED WATER BOILER User s Information Manual Maintenance procedures END OF SEASON To continue operation for DHW l If the boiler is to supply heat for domestic hot water generation during the summer no changes should be needed Just leave the boiler power on and allow the DHW storage tank to call for heat as necessary Set back room thermostats to prevent any unnecessary call for heat during the off season To leave boiler in stand by mode l The SlimFit boilers U Control provides effective features for stand by operation includ ing periodic exercising of the boiler and system circulators and automatic operation of the boiler at low fire if water temperatures drop too close to freezing Just configure the U Control as needed to operate the necessary circulators Leave the boiler power on and allow the U Control to monitor the boiler and system dur ing the stand by period AWARNING The U Control must be configured to operate all circulators needed to ensure the system and all circuits will be protected against freezing See the SlimFit Commercial Boiler manual for details 3 Set back room thermostats to prevent any unnecessary call for heat during the off season To shut down the boiler Part number 550 100 088 0814
18. resulting in possible severe personal injury death or substantial property damage Do not operate an SlimFit boiler if its combustion air inlet is located in a laundry room or pool facility for example These areas will always contain hazardous contaminants Pool and laundry products and common household and hobby products often contain fluorine or chlorine compounds When these chemicals pass through the boiler they can form strong acids The acid can eat through the boiler wall causing serious damage and presenting a possible threat of flue gas spillage or boiler water leakage into the building Please read the information listed below If contaminating chemicals will be present near the location of the boiler combustion air inlet have your installer pipe the boiler combustion air and vent to another location per the Boiler manual Products to avoid Areas likely to have contaminants Spray cans containing chloro fluorocarbons Dry cleaning laundry areas and establishments New building construction Antistatic fabric softeners used in clothes dryers Chlorine type bleaches detergents and cleaning Garages with workshops solvents found in household laundry rooms Refrigerant leaks Auto body shops Adhesives used to fasten building products and other similar products 8 Part number 550 100 088 0814 SlimFit GAS FIRED WATER BOILER User s Information Manual Annual startup and general maintenance Figure 5 Service and
19. s or cannot be removed have the boiler and system checked by a qualified service technician J Do not allow contaminated air to enter the boiler room or air inlet pipe if direct vented See page 8 for details J Should overheating occur or gas supply fail to shut off do not turn off or disconnect electrical supply to boiler Instead shut off the gas supply at a location external to the appliance J Do not use this boiler if any part has been under water Immediately call a qualified service technician to inspect the boiler and to replace any part of the control system and any gas control which has been under water Boiler water J Have boiler water chemistry checked at least annually by a qualified service technician J DO NOT use petroleum based cleaning or sealing compounds in boiler system Gaskets and seals in the system may be damaged This can result in substantial property damage J DO NOT use homemade cures or boiler patent medicines Serious damage to boiler personnel and or property may result J Continual fresh makeup water will reduce boiler life Mineral build up in boiler heat exchanger reduces heat transfer overheats the metal and causes heat exchanger fail ure Addition of oxygen can cause internal corrosion in system components Leaks in boiler or piping must be repaired at once to prevent makeup water _ Do not add cold water to hot boiler Thermal shock can cause boiler heat exchanger
20. this boiler This boiler contains materials that have been identified as carcinogenic or possibly carcinogenic to humans When calling or writing about the boiler Please have the boiler model number from the boiler rating label and the CP number from the label located on the left side of the control box 2 Part number 550 100 088 0814 i it GAS FIRED WATER BOILER E SlimFit User s Information Manual STOP READ THIS BEFORE PROCEEDING AWARNING Failure to adhere to the guidelines on this page can result in severe personal injury death or substantial property damage Boiler service and maintenance J To avoid electric shock disconnect all electrical supplies to the boiler before perform ing maintenance if wiring will be exposed J To avoid severe burns allow boiler to cool before performing maintenance You must maintain the boiler as outlined in this manual and have the boiler started up and serviced at least annually by a qualified service technician to ensure boiler system reliability Boiler operation J Do not block flow of combustion or ventilation air to boiler This boiler is equipped with a control which will automatically shut down the boiler should air or vent be blocked If vent or air blockage is easily accessible and removable remove it If the boiler display indicates a manual reset lockout follow the procedure in Figure 4 page 7 to reset the boiler If blockage is not obviou
21. y sealed See step 4 Rotate latches boiler is firing clockwise DE ro TURN OFF GAS TO THE APPLIANCE HAD 1 Setroom thermostats to lowest setting 3 Close external manual gas cock valve handle perpendicular to gas 2 Turn OFF all electrical power to the appliance piping Remove boiler access door Turn boiler manual gas valve knob clockwise v to close gas supply Replace boiler access door 550 101 255 0409 E 4 Part number 550 100 088 0814 SlimFit GAS FIRED WATER BOILER User s Information Manual Boiler components Figure 2 SlimFit component locations Pressure temperature gauge U Control display and navigation buttons Rotary latches Low water cutoff Manual gas shut off valve C Condensate drain connection UC3001 user Part number 550 100 088 0814 5 SlimFit GAS FIRED WATER BOILER User s Information Manual The U Control display Figure3 SlimFit boiler s U Control display McLAIN um WEIL H H MM AM O 1 Screen color Blue space heating or when a button is pressed MM DD YY MODULATION nRHRHHHRHHH D A I N F O Display above is typical for normal operation The center symbol changes BUTTONS to show operation status Press P to switch to INFO screen The INFO screen below is for at a glance information during normal operation HH MM AM MM DD YY STATUS HRRHRHHRWRH MODULATION 7 IJ TARGET HHH
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