CAC / BDP BW4 Installation instructions manual

Manual is about: Oil---Fired Cast Iron Hot Water Boilers Sizes 140,000 through 280,000

Summary of BW4

  • Page 1

    Bw4 bw5 installation instructions oil---fired cast iron hot water boilers sizes 140,000 through 280,000 note: read the entire instruction manual before starting the installation. Table of contents page safety considerations 1 . . . . . . . . . . . . . . . . . . . . . . . . Introduction 3 . . . . . ....

  • Page 2: Warning

    2 a02217 fig. 1 -- model bw4/bw5 7. Be sure there is adequate air supply for complete combustion. 8. Follow a regular service and maintenance schedule for efficient and safe operation. 9. Keep boiler area clean and free from combustible materials, gasoline, and other flammable vapors and liquids. 10...

  • Page 3: Warning

    3 a 19 5/8 ″ gage 36″ 1 1/4 in. Return 1 1/4 in. Supply aquastat control (without coil) aquastat control (with coil) tankless heater 1/2 in. N.P.T. 9″ c b 3/4 in. Asme relief valve front side rear a96152 fig. 2 -- dimensional drawing (see table 1 for additional information) fire, explosion hazard fa...

  • Page 4

    4 for bw4rah models equipped with riello burners: there are two different riello burners used on the bw4rah boilers, the f5 and f10 burner. The bw4rah000280aaaa is shipped with one additional nozzles to fire the f10 burner at the next alternate lower input listed on the rating plate. The bw4rah00021...

  • Page 5

    5 to outside oil filter shutoff valve oil tank vent pipe oil burner oil lines vent pipe minimum 2 in. Id 2 in. Fill pipe automatic fill valve and shutoff diaphragm expansion tank draft regulator foundations electric line service line entrance switch overcurrent protected safety switch lines to other...

  • Page 6: Warning

    6 table 1 -- boiler ratings and capacities (cont.) with tank - less coil no. Sec input *mbh **heating capacity *mbh net i=b=r rating *mbh firing rate gph a.F.U.E min. Chimney size/height dimensions---in shipping weight tankless heater ##g.P.M. H w d bw5bah140 bw5rah140 3 91 80 70 0.65 #86.3 8” x8” x...

  • Page 7

    7 ventilating grille combustion air grille a95594 fig. 5 -- air openings for closet or utility room installations boiler fresh air duct a95595 fig. 6 -- fresh air duct for tightly sealed house example: the boiler is rated at 100,000 btuh. The water heater is rated at 30,000 btuh. The total is 130,00...

  • Page 8

    8 table 3 – boiler rating information boiler model burner firing rate input (mbh) tankless rating (gpm) bw4bah091 bw4rah091 bw5bah091 bw5rah091 0.65 91 2.90 bw4bah105 bw4rah105 bw5bah105 bw5rah105 0.75 105 3.00 bw4bah140 bw4rah140 bw5bah140 bw5rah140 1.00 140 3.25 bw4bah126 bw4rah126 bw5bah126 bw5ra...

  • Page 9

    9 filtrol with air purger automatic fill valve supply to system main shutoff valve drain valve for power purging shutoff valve boiler service fill line with shut off valve return from system boiler drain valve r aquastat s a01032 fig. 9 -- circulator on supply pumping away filtrol with air purger au...

  • Page 10: Warning

    10 table 4 – recommended minimum chimney sizes firing rate (gph) chimney height (ft.) normal chimney area (in.) round liner inside diameter (in.) square liner inside dimensions (in.) 0.60 to 1.30 15 8 x 8 6 6---3/4 x 6---3/4 1.31 to 1.80 15 8 x 8 7 6---3/4 x 6---3/4 1.81 to 2.00 20 8 x 8 8 6---3/4 x...

  • Page 11

    11 it is possible for a tank to become “water--logged” (filled with water). It can also become overfilled with air. This can happen after filling system with new water. Fittings are provided on tank and in line to tank for bleeding off excess water or air. When installing this tank, the following ar...

  • Page 12

    12 table 6 – piping water volumes pipe size copper pipe factor steel pipe factor 1/2---in. 82.5 63.5 3/4---in. 40.0 36.0 1---in. 23.3 22.2 1---1/4---in. 15.3 12.8 1---1/2---in. 10.8 9.5 2---in. 6.2 5.8 ---divide total length of piping in feet by appropriate factor in table to de- termine volume in g...

  • Page 13: Warning

    13 until hand is again pointing to same pressure reading. Instructions are packaged with valve. Operating boiler unit operation and safety hazard failure to follow this warning could result in personal injury, death and or property damage. Do not tamper with unit or controls. ! Warning important: fo...

  • Page 14

    14 3-3/4" 1/32" "z" dimension location of head at "d" position on adjusting plate "v1" adjustable head air tube combination hold down screw acorn nut/ lock washer knurled nut secondary adjusting plate primary adjusting plate witness mark beckett afg variable (v1) head adjustments and settings a06664...

  • Page 15

    15 a06507 fig. 17 -- riello 40--f10 burner electrode adjustments oil burner maintenance the following preventative maintenance items should be performed annually, preferably prior to the heating season. A. Oil burner motor add 2--3 drops of non--detergent electric motor oil to each oil cup located a...

  • Page 16: Warning

    16 table 8 – riello oil burner specifications base model boiler input (btuh) delevan oil nozzle firing rate (gpm) turbulator/air shutter setting oil pump pressure (psig) oil burner 140 91,000 0.50--- 70ºw 0.65 0.5 / 2.0 155 f5 105,000 0.65--- 70ºw 0.75 2.0 / 2.2 150 f5 140,000 0.85--- 70ºw 1.00 2.0 ...

  • Page 17

    17 oil boiler/burner cleaning instructions oil boiler cleaning 1. Shut off all electrical power to the boiler/burner and shut off fuel oil supply. 2. Remove the vent pipe from the top of the boiler. Inspect the pipe and chimney for signs of corrosion and deterioration. Clean out the base of the chim...

  • Page 18

    18 to 115v supply l1 n h 115v 60 cycle supply 24 volt thermostat l2 t t to 24v therm aquastat relay a95602 fig. 19 -- wiring connections to aquastat relay table 9 – recommended operating control settings operating control control setting high limit standing radiators 180°f baseboard and convectors 2...

  • Page 19

    19 l1 field wiring 24 volt thermostat l8124c aquastat neut hot 120v power supply overcurrent protected disconnect bk w r bk bk w w r circulator pump ignition transformer oil burner motor bk bk w bk o r4184 relay cad cell y y 120/60/1 overcurrent protected disconnect boiler without tankless heater co...

  • Page 20

    20 a06504 fig. 21 -- boilers without tankless coil and honeywell l8148 aquastat control bw 4 /bw 5.

  • Page 21

    21 f5 only a06505 fig. 22 -- boilers with tankless coil and honeywell l8124c aquastat control and riello burners bw 4 /bw 5.

  • Page 22

    22 10 f (5.6 c) diff 110 f (43 c) 240 f (116 c) 25 f (13.9 c) diff 10 f (5.6 c) diff switch breaks on rise, turns burner off. Circulator operates on call for heat. Switch makes on fall. Burner operates on call for heat. Switch makes r-b on fall, breaks r-w. Burner on, circulator off. Switch makes r-...

  • Page 23

    23 12 xxx 13 2 11 1 xxx 10 xxx 4 2 xxx xxx 7 xxx 5 14 2 3 1 9 xxx 8 1 1 1 1 1 15 1 16 1 18 10 19 10 20 10 a01039 item description part number 1 section machined back 403---00---008 2 section machined middle 403---00---007 3 section machined front 403---00---006 4 nipple machined 2---in. --- (2---in....

  • Page 24

    24 6 2 7 2 5 1 1 1 1 4 1 3 1 2 1 8 1 4 1 10 1 11 1 12 a01040 item description part number 1 section machined front 403–00–006 2 stud tfl (threaded full length) 3/8–16--in. X 2–1/2--in. 146–95–125 3 whizlok nut zp (zinc plated) 3/8 146–95–126 4 insulation swing door (gemoclite vacuum formed ceramic f...

  • Page 25

    25 table 12 – riello oil burner service parts riello oil burner repair parts oil burner repair parts---burner not shown part number burner motor 30a065101 fuel pump * 30a065401 oil solenoid coil * * 30a064901 oil primary control 530se 30a064801 electrodes 30a065301 photo cell 30a065701 oil burner, 3...

  • Page 26

    26 left side panel back panel right side panel jacket screw lower front panel shown here for clarity acorn nut stand_off opening for optional expansion tank or air eliminator tridicator opening collector opening jacket top boiler supply opening front panel a01041 fig. 25 -- jacket parts 4 2a (withou...