Triangle Solo 110 Boiler Manual
Contents
1. prestige User s Information Manual prestige Complies with ANSI Z21 13b CSA4 9b C US Gas Fired ters Low Pressure Boiler WARNING 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 FOR YOUR SAFETY e Do not store or use gasoline or other flammable vapors and liquids in the vicinity of this or any other appliance e WHAT TO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions If you cannot reach your gas supplier call the fire department Installation and service must be performed by a qualified installer service agency or the gas supplier Revised 8 31 06 T ri a 9 l eTu be 2004 3 Prestige User s Manual Hot Water 5 pecialists Table of Contents TriangleTube Hot Water Specialists PRODUCT amp SAFETY INFORMATION Page 1 Service and Maintenance PRESTIGE Operation Boiler amp System Water SECTION I Combustion Air Prevention of Contamination Page 2 Potential Contaminating Products Areas likely to find these Products SECTION Il Maintenance Schedule Page 3 Service Technician Own2. Fig 6 Prestige Electronic Components PSRKIT18 Prestige Control Module PSRKIT19 Transformer with Surge Protection PSRKIT20 Prestige Control Module Display PSRKIT17 Pressure Gauge Not shown Additional quality water heating equipment available from Triangle Tube Phase Ill Heat Master Commercial Water Heaters Stainless steel construction Oil and Gas fired A unique design that eliminates the problem of associated with traditional water heaters Inputs ranging from 165 000 BTU hr to 390 000 BTU hr 5 year non prorated warranty ASME version available Delta ELITE amp PERFORMANCE Combination Heaters Heat and hot water in one footprint Up to 292 gph domestic hot water Completely piped and wired from the factory Zero clearance to combustibles Available in direct vent Limited LIFETIME warranty Exclusive tank in tank design Phase Ill Indirect Fired Water Heaters Exclusive tank in tank design Stainless steel construction Available in 8 sizes and 2 models Limited LIFETIME residential warranty 15 year limited commercial warranty Self cleaning self descaling design Maxi flo Pool and Spa Heat Exchangers Constructed of high quality corrosion resistant stainless steel AISI 316 Specially designed built in flow restrictor to assure maximum heat exchange Compact and light weight Available in 5 sizes that can accommodate any size pool or spa Freeway Center 1 Tri
3. Check and remove any blockage from the combus tion air inlet and ventilation openings Check the temperature pressure gauge Monthly Check vent piping Check combustion air inlet piping Check the pressure relief valve Check the condensate drain system Every 6 months Check boiler piping and gas supply piping for corro sion or potential signs of leakage Operate the pressure relief valve Follow the maintenance procedures given throughout this manual Failure to perform the service and maintenance or follow the directions in this manual could result in damage to the PRESTIGE or in system components resulting in severe personal injury death or substantial property damage Maintenance Procedures SECTION III WARNING The PRESTIGE must be inspected and serviced annually preferably at the start of the heating sea son by a qualified service technician In addition the maintenance and care of the boiler as outlined on page 3 and further explained on pages 4 through 6 must be performed to assure maximum efficiency and reliability of the unit Failure to service and maintain the PRESTIGE and the system components could result in equipment failure causing possible severe personal injury death or substantial property damage NOTICE The following information provides detailed instruc tion for completing the maintenance items outlined in the maintenance schedule on page 3 In ad
4. Sx RN Internal control error failure to read parameters or mews Internal control failure FAR Fn 1 Fn 1 Fn Fn AR AR CAR Fn AR Fn Fp AR AR AR AR AR 1 Fn EE Fn Fn En Ln Inadequate power supply to the fan Replacement Parts TriangleTube Hot Water Specialists Fig 2 Prestige Jacket Components PSJKTOIT Top Jacket Panel Solo 110 PSJKTO3T Top Jacket Panel Solo 175 250 PSJKTO2T Top Jacket Panel Access Solo 110 PSJKTO4T Top Jacket Panel Access Solo 175 250 PSJKTO3 Control Cover Panel PSJKTOIS Side Jacket Panel Left and Right 0 9 PSRKT21 Wall Mounting Bracket with Hardware Replacement Parts TriangleTube Hot Water Specialists sis J lt d a bet e Replacement Parts TriangleTube Hot Water Specialists Fig 4 Prestige Internal Components Solo 175 250 EN 1 PGRKIT20 LWCO Pressure Device Replacement Parts TriangleTube Hot Water Specialists Fig 5 Prestige Burner Components en NJD EE PSRKITO9 Combustion Chamber Insulation Solo 110 1 Ee Peer TT CE 10 Propane Orifice 0 204 G52 Not Shown ao ____ Bumer Plate Gasket Nor Shown 8 PSRKITI5 Igniter with Gasket Replacement Parts TriangleTube Hot Water Specialists D E gt E eeeneee
5. dis play alternates between a 9 followed by the boiler outlet temperature and a b with a two digit error code Display TriangleTube Hot Water Specialists Boiler function STANDBY no demand for heat Fan prepurge 10 seconds or post purge cycle Ignition sequence Burner ON for space heating CH Burner ON for domestic water heating DHW Pre check for air flow prior to prepurge cycle Burner OFF due to reaching supply temperature set point Post pump cycle for primary space heating 1 minute Post pump cycle for domestic hot water 30 seconds Co ED ED 09 89 ED Oo oo Oo oo Burner blocked Er ka of a ae au Pu 1 Ka B9 bead beaa ead ead ea fees ea aal aal ke be d Supply temperature too high 203 F Burner will remain OFF until outlet temperature drops below 200 F pr be d Return temperature too high 203 F Burner will remain OFF until temperature drops below 200 F Pa LG Bo Ro Ro R Ro Ro Ro Ro Ru Ra Ra or Nu Return temperature is measured higher than supply temperature Burner will remain OFF until corrected Er Pus Ln Supply temperature increased too quickly Burner will remain OFF for a 10 minute period Burner will recycle increasing waiting period 1 minute for a max 15 minutes Pu Dn Factory supplied LWCO pressure device or external limit terminals 15 amp 16 is OPEN Burner off for 150 se
6. valve does not weep after the line has had time to drain If the valve weeps lift the lever again to attempt to clean the valve seat If the valve does not properly seat and continues to weep afterwards contact a qualified service techni cian to inspect the valve and system 4 If the water does not flow from the valve when you lift the lever completely the valve or dis charge line may be blocked Immediately shut the unit down per the instructions on page 7 Call a qualified service technician to inspect the valve and system Operating Instructions SECTION IV OPERATING INSTRUCTIONS TriangleTube Hot Water Specialists MN FOR YOUR SAFETY READ BEFORE LIGHTING NN WARNING If you do not follow these instructions exactly a fire or explosion may result causing property damage personal injury or loss of life A 1 2 This appliance does not have a pilot It is equipped with an ignition device which automat ically lights the burner DO NOT try to light the burner by hand BEFORE OPERATING smell all around the appliance area for gas Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor WHAT TO DO IF YOU SMELL GAS e Do not try to light any appliance Do not touch any electric switch do not use any phone in your building Immediately call your gas supplier from a neighbor s phone Follow the gas supplier s instructions STO
7. P Read the safety information above on this label This appliance is equipped 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 Turn the external manual gas valve handle clockwise a CLOSE valve handle shall be per pendicular to gas piping Turn the service switch on the PRESTIGE con trol panel OFF Remove the front jacket panel on the unit Turn the external manual gas valve handle count er clockwise gt to OPEN gas supply valve handle shall be parallel to gas piping Wait five 5 minutes to clear out any gas If you then smell gas in the jacket enclosure or around the unit STOP Follow B in the safety infor mation above If you don t smell gas go to the next step Set the room thermostat to lowest setting Turn the service switch on the PRESTIGE con trol panel to OFF TO TURN OFF GAS TO APPLIANCE 3 e Ifyou cannot reach your gas supplier call the fire department Use only your hand to turn the external manual gas valve Never use tools If the valve will not turn by hand don t try to repair it call a qualified service technician Force or attempted repair may result in a fire or explosion Do not use this appliance if any part has been under water Immediately call a qualified service technician to inspect the appliance and to replace any part of the control system and any gas cont
8. angle Lane Member of CAS s Blackwood NJ 08012 150 3001 TriangleTube Tel 856 228 8881 Fax 856 228 3584 FRE EET SEES E mail Sales triangletube com 9 Zan ae
9. conds auto reset No blower signal Pu LD Blower signal present Burner will remain OFF until condition terminates rrr or GZ Vang RN Temperature rise between the supply and return is more than 72 F Burner will remain OFF for 150 seconds Burner will recycle increasing wating period 1 minute each cycle for a max 20 cycles Short circuit measured across flue temperature sensor terminals Burner OFF until corrected X Vang Ry Ln Open circuit measured across the flue temperature sensor Flue temperature greater than 241 F less than 250 F Burner off for 150 seconds role er Ln Pu Wait for the blower to start Boiler Control Display SETTING THE BOILER PARAMETERS Parameter Mode DDD A To access PARAMETER mode when the system is in STANDBY mode press the MODE button once To scroll through the list of parameters simply press the STEP button To modify a parameter value use the or keys Then press STORE to save the value you just changed The display flashes once to confirm the data has been saved To activate the parameters you changed press MODE once more which brings you into INFORMATION mode However if you do not press a key the system returns to STANDBY mode after 20 minutes and auto matically enables the changes Key Display Pressing MODE once E PARA 9 Key Display Description o
10. dition to this maintenance the PRESTIGE should be serv iced at the beginning of the heating season by a qualified service technician MAINTENANCE PROCEDURES Daily Maintenance Check the surrounding area WARNING To prevent potential of severe personal injury death or substantial property damage eliminate all the materials listed on page 2 from the area surrounding the unit and from the vicinity of the combustion air inlet If contaminates are found Remove products immediately from the area If they have been there for an extended period call a quali fied service technician to inspect the unit for possi ble damage from acid corrosion If products cannot be removed immediately call a qualified service technician to re pipe the combus tion air inlet piping and locate the combustion air intake away from the contaminated areas TriangleTube Hot Water Specialists 1 Combustible flammable materials Do not store combustible materials gasoline or other flammable vapors or liquids near the unit Remove immediately if found 2 Air contaminates Products containing chlorine or fluorine if allowed to contaminate the com bustion air will cause acidic condensate within the unit This will cause significant damage to the unit Read the list of potential materials list ed on page 2 of this manual If any of these products are in the room from which the unit takes its combustion air they must be removed immediat
11. ely or the combustion air intake must be relocated to another area Check Combustion Air Inlets 1 Verify that ventilation air openings to the mechanical room are open and unobstructed 2 Verify that the unit s vent termination and com bustion air intake are clean and free of obstruc tions Remove any debris on the air intake or flue exhaust openings If removing the debris does not allow the unit to operate correctly con tact your qualified service technician to inspect the unit and the vent combustion air system Check Temperature Display and Pressure Gauge 1 Ensure the pressure reading on the pressure gauge does not exceed 25 psig Higher pres sure readings may indicate a problem with the expansion tank 2 Ensure the temperature on the display panel does not exceed 194 F Higher temperature readings may indicate a problem with the oper ating thermostat controls 3 Contact a qualified service technician if prob lem persists Maintenance Procedures Monthly Maintenance Check Vent Piping 1 Visually inspect the flue gas vent piping for any signs of blockage leakage or deterioration of the piping Notify a qualified service technician immediately if any problems are found WARNING Failure to inspect the venting system as noted and have it repaired by a qualified service technician can result in the vent system failure causing severe per sonal injury or death Check Combustion Air In
12. ensate drain line is not blocked by pouring water through the plug port on the condensate drain assembly The water should flow out of the end of the drain line If water does not appear at the end of the drain line con tact a qualified service technician to inspect and clean the condensate line 4 To fill the condensate drain assembly if neces sary remove the plug from the condensate assembly Slowly pour water into the trap assembly until water appears at the end of the drain line Stop filling and replace plug Check Automatic Air Vents If Used 1 Remove the cap A from any automatic air vent in the system and check operation by depressing valve B slightly with the tip of a screwdriver See Fig 1 2 Ifthe air vent valve appears to be working freely and not leaking replace cap A screwing it on fully 3 Loosen cap A one full turn to allow vent to operate properly 4 Have the air vent replaced by a qualified service technician if it does not operate correctly U Fig 1 Automatic Air Vent Maintenance Procedures 6 Month Maintenance Check Water and Gas Piping 1 Remove the boiler front jacket panel and perform a gas leak inspection per steps 1 through 6 of the Operating Instructions on page 7 If gas odor or leak is detected immediately shut down the unit following procedures on page 7 Call a qualified service technician 2 Visually inspect
13. er Maintenance SECTION Ill Maintenance Procedures Page 4 Daily Maintenance Monthly Maintenance 6 Month Maintenance SECTION IV Operations Instructions Page 7 SECTION V Boiler Control Display Page 8 Replacement parts Page 11 The following terms are used throughout this manual to bring attention to the presence of potential hazards or to important information concerning the product Indicates a potentially hazardous situation Indicates special instructions on installation which if ignored can result in death serious operation or maintenance which are important to injury or substantial property damage equipment but not related to personal injury haz ards Product amp Safety Information PRODUCT amp SAFETY INFORMATION WARNING HOMEOWNER The PRESTIGE installation manual is for use only by a qualified heating installer service technician Refer to this User s Information Manual for your reference Failure to comply could result in severe personal injury death or substantial property damage NOTICE TECHNICIAN When calling or writing about the PRESTIGE please have the boiler model and serial number available STOP READ BEFORE SERVICING WARNING Failure to adhere to the guidelines on this page can result in severe personal injury death or substantial property damage Service and Maintenance e To avoid electric shock disconnect electrical supply before performing se
14. f parameters 1 7 UB Domestic Hot Water Setting See Note 1 STEP AA NG 9 ua m E z Domestic Hot Water Setup See Note 2 a4 m Z zi Space Heating Mode See Note 3 Maximum temperature in space heating 66 CH mode In applications using an STER N A A Zl outdoor sensor this is the boiler outlet target temperature at an outdoor temperature of 0 F Note 1 This parameter is factory set to 140 F It is important to note the control adds 46 F to this setting therefore the actual domestic hot water setting is 140 F 46 F 186 F Note 2 This parameter should not be changed from the factory setting The performance of the DHW will be affected and can become unreliable Note 3 This parameter should not be changed from the factory setting The performance of the CH Central Space Heating will be affected and can become unreliable TriangleTube Hot Water Specialists ACCESSING BOILER INFORMATION Information Mode AFD To switch from STANDBY mode to Information mode press MODE twice Press STEP until the system displays the information you need The decimal point located behind the first position flashes to indicate that the boiler is in INFO mode Key Display Pressing MODE once E PARA 9 TAFE Pressing MODE twice Key Display Description of parameters 717 HE Measured outlet supply water step amp 4 DS temperat
15. for leaks around the internal boiler water connections and around the heat exchanger Visually inspect the external system piping circula tors and system components and fittings Immediately call a qualified service technician to repair any leaks WARNING Have leaks fixed at once by a qualified service tech nician Failure to comply could result in severe per sonal injury death or substantial property damage Operate Pressure 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 WARNING To avoid water damage or scalding due to valve operation a discharge line must be connected to the relief valve outlet and directed to a safe place of dis posal This discharge line must be installed by a qualified service technician or heating plumbing installer in accordance with the PRESTIGE installa tion manual The discharge line must be terminated so as to eliminate possibility of severe burns or property damage should the valve discharge TriangleTube Hot Water Specialists 2 Read the temperature display and pressure gauge to ensure 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
16. let Piping 1 Visually inspect the combustion air inlet piping for any signs of blockage Inspect the entire length of the combustion air inlet piping to ensure piping is intact and all joints are properly sealed 2 Notify a qualified service technician if any prob lems are found Check Pressure Relief Valve 1 Visually inspect the primary pressure relief valve and the relief valve discharge pipe for signs of weeping or leakage 2 If the pressure relief valve often weeps the expansion tank may not be operating properly Immediately contact a qualified service techni cian to inspect the unit and system Check Vent Condensate Drain System 1 While the unit is running check the discharge end of the condensate drain tubing Ensure no flue gas is leaking from the condensate drain tubing or tee connection by holding your fingers near the opening 2 If you notice flue gas leaking from the opening this indicates a dry condensate drain trap Fill the condensate trap assembly Contact a quali fied service technician to inspect the unit and condensate line and refill the condensate trap if problem persists regularly TriangleTube Hot Water Specialists Under some circumstances the PRESTIGE may not produce enough condensate to keep the condensate trap full of liquid If the trap is not full small amounts of flue gases can be emitted into the sur rounding area through the condensate drain line or tee 3 Ensure the cond
17. ndry products and common household and hobby products often contain fluorine or chlo rine compounds When these chemicals pass through the burner and vent system they can form strong acids These acids can create corrosion of the heat exchanger burner components and vent system causing serious damage and presenting a possible threat of flue gas spillage or water leakage into the surrounding area Please read the following information If contami nating chemicals will be present near the location of the combustion air inlet the installer should pipe the combustion air inlet to another location per the PRESTIGE installation manual TriangleTube Hot Water Specialists Potential Contaminating Products Spray cans containing chloro fluorocarbons Permanent Wave Solutions Chlorinated wax Chlorine based swimming pool chemicals and spa cleaners Calcium Chloride used for thawing ice Sodium Chloride used for water softening Refrigerant leaks Paint or varnish removers Hydrochloric acid muriatic acid Cements and glues Antistatic fabric softeners used in clothes dryers Chlorine type bleaches detergents and clean ing solvents found in household laundry rooms Adhesives used to fasten building products and other similar products Areas likely to find these products Dry cleaning laundry areas and establishments Beauty salons Metal fabrication shops Swimming pools and health s
18. pas Refrigeration Repair shops Photo processing plants Auto body shops Plastic manufacturing plants Furniture refinishing areas and establishments New building construction Remodeling areas Garages with workshops Maintenance Schedule SECTION Il Maintenance Schedule Service Technician At least on an annual basis the following maintenance should be performed by a qualified service technician General Attend to any reported problems Inspect the interior of the boiler jacket area clean and vacuum if necessary Clean the condensate trap and fill with fresh water Check for leaks water gas flue and condensate Verify flue vent piping and air inlet piping are in good condition and sealed tight Check boiler water pressure piping and expansion tank Check control settings Check ignition electrode sand off any white oxide clean and reposition Check ignition wiring and ground wiring Check all control wiring and connections Check burner flame pattern stable and uniform and flame Additional items if combustion or performance is poor Clean heat exchanger and flue ways Remove burner assembly and clean burner head using compressed air only Once the maintenance items are completed review the service with the owner TriangleTube Hot Water Specialists Owner Maintenance Periodically Check the area around the unit
19. r is ON and burner operates at low fire 50 F Burner OFF and boiler circulator operates for approximately 10 minutes CAUTION The boiler freeze protection feature is dis abled during a Hard Lockout Display TriangleTube Hot Water Specialists Hard Lockout RN Flame detected prior to burner startup Failed ignition after 5 attempts Gas valve harness not properly connected af NG Pog Power supply lost after lockout occured Internal control failure Internal control failure Internal control failure Internal control failure Internal control failure Internal control failure External limit terminals 13 amp 14 control is OPEN Internal control failure Internal control failure Internal control failure Internal control failure Internal control failure Supply Temperature exceeds 212 F Return temperature exceeds 212 F Supply temperature increased too rapidly No blower signal present Blower signal does not reset to zero Supply temperature sensor is short circuited Return temperature is short circuited Supply temperature sensor is OPEN Return temperature sensor is OPEN Ln T ie ka ne Pg Pg Pug Ka Ra Kal Ka Kal Ka l Ka Ref RS Ni Ny No Xx Ny Ny NY Ny Pu a SP Ka ee 31 En LP 1 E 1 ka Pu 1 Ka LB 1 LP Internal control failure Flue temperature exceeds 250 F
20. rol which has been under water OPERATING INSTRUCTIONS Ta Turn the service switch on the PRESTIGE con trol panel ON Set room thermostat s to desired setting s The PRESTIGE control panel display will show a sequence of numbers 0 1 2 3 4 etc as the left digit Sequence digit 3 or 4 indicates the boiler is firing Sequence digit 0 means there is no call for heat all external thermostats are satisfied Ifthe unit will not operate with a call for heat and the system piping is not hot follow the instructions To Turn Off Gas to Appliance below and call your service technician or gas supplier Replace the front jacket panel Make sure the panel is seated firmly in place and all mounting screws are tighten Turn the external manual gas valve handle clock wise to CLOSE Boiler Control Display BOILER CONTROL DISPLAY Standby Mode R L L U After the boiler is turned on the control panel will display STANDBY mode as shown in the figure above This is the standard mode for the PRESTIGE The con trol automatically returns to this mode after 20 minutes if no keys have been pressed on the display The first character shows on left side of display the cur rent status of the boiler depending on the condition of both the boiler and the burner The last 3 characters indi cate the current boiler supply temperature If the burner is blocked due to a soft lockout the
21. rvice or maintenance e Allow the unit to cool down prior to servicing to avoid severe burns e The PRESTIGE must be maintained as outlined in this manual and have at least annual service per formed by a qualified service technician to ensure unit system reliability TriangleTube Hot Water Specialists PRESTIGE Operation e Do not block flow of combustion air to the PRES TIGE If the combustion air blockage is easily accessible and removable then remove it If block age is not obvious or cannot be removed have the unit and system checked by a qualified service tech nician e Do not allow contaminated air to enter the unit s combustion air inlet See page 2 for details e The PRESTIGE is equipped with a low water cutoff device The boiler and system piping must be filled and pressurized to 15 psig prior to startup The unit will shut down if the pressure falls below 10 psig e Should overheating occur or the gas supply fail to shut off DO NOT turn OFF or disconnect the elec trical supply to the pump Instead shut off the gas supply at a location external to the appliance e _ Do not use this unit if any part has been under water Immediately call a qualified service technician to inspect the boiler and to replace any part of the con trol system and any gas control which has been under water Boiler amp System Water e Have the boiler and system water chemistry checked at least annually by a qualified se
22. rvice tech nician e Do not use petroleum based cleaning or sealing compounds in the boiler or system Gaskets and seals in the system may be damaged This can result in substantial property damage e Do not use any product not specifically designed for boiler hydronic heating systems Serious damage to the unit piping system personnel and or prop erty may result e Continual fresh makeup water will reduce the life of the PRESTIGE Addition of oxygen can cause inter nal corrosion in the system components All leaks in the piping system must be repaired at once to pre vent makeup water s Do not add cold water to a hot unit Thermal shock can cause premature failure to the boiler heat exchanger Combustion Air Prevention of Contamination SECTION I COMBUSTION AIR PREVENTION OF CONTAMINATION WARNING If the PRESTIGE combustion air inlet is located in any area likely to cause or contain contamination or if products which would contaminate the air cannot be removed the combustion air must be re piped and terminated to another location Contaminated combustion air will damage the unit and its burner system resulting in possible severe personal injury death or substantial property damage WARNING Do not operate a PRESTIGE unit if its combustion air inlet or the unit is located in or near a laundry room or pool facility These areas will always contain haz ardous contaminates Pool and lau
23. ure E I 5 jz Measured inlet return water STEP 4 LIZ temperature Z IA Ths ter is not used Slade parameter is not use U 5 5 Measured outdoor temperature STEP Optional outdoor sensor required U A m 5 A of Measured flue temperature 5 7 HE Calculated target outlet water TER A LIZ temperature rm Rate of increase in the outlet water STEP A 4 temperature F sec A Rate of increase in the return water STEP A temperature F sec S i a q E E This parameter is not used If STEP is pressed after parameter 9 the display will show A e Boiler Control Display Error Hard Lockout Mode If a system fault occurs while the boiler is running the system goes into lockout and the display starts to flash with the first digit as an E and the next two digits repre sent the fault code For a detailed description of the error codes reference the PRESTIGE Trouble Shooting Guide During a hard lockout or low water condition the boiler will not re start without service If the heating system is left unattended in cold weath er appropriate safeguards or alarms should be installed to prevent property damage Boiler Freeze Protection Feature The boiler control has a freeze protection feature built in This feature monitors the boiler temperature and responds as follows when no call for heat is present 45 F Boiler circulator is ON 37 F Boiler circulato
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