Page 2 - Weil-McLain 88 Water and steam boilers — Series 2 —; Hazard Definitions; Read before proceeding:; Propane boilers only; Read before proceeding
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 2 Part No. 550-100-068/0308 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 i...
Page 3 - Boiler manual: • Installation • Start-Up • Maintenance • Parts; Contents
Boiler manual: • Installation • Start-Up • Maintenance • Parts 3 Part No. 550-100-068/0308 Before installing boiler 4 Set boiler in place 7 Assembling the block 8 Perform hydrostatic pressure test 11 Complete block assembly 12 Connect water boiler piping 14 Connect steam boiler piping 16 Install jac...
Page 4 - Installation must comply with —; Before installing boiler; Figure 1; Figure 2
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 4 Part No. 550-100-068/0308 Installation must comply with — State, provincial and local plumbing, heating and electrical 1. codes.Regulations of servicing utilities. 2. ASME Section IV, Low Pres...
Page 5 - Required volume of interior spaces; Figure 3; Figure 4; Combustion air openings to; Outside openings
Boiler manual: • Installation • Start-Up • Maintenance • Parts 5 Part No. 550-100-068/0308 Before installing boiler (continued) Combustion and ventilation air openings Adequate combustion and ventilation air must be provided to assure proper combustion and prevent possibility of flue gas leakage and...
Page 6 - Combustion air — combination indoor and; net free; Minimum screen mesh size
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 6 Part No. 550-100-068/0308 freely communicate with the outdoors, as follows: Where directly communicating with the outdoors or where • communicating to the outdoors through vertical ducts, each...
Page 7 - Set boiler in place; Figure 5
Boiler manual: • Installation • Start-Up • Maintenance • Parts 7 Part No. 550-100-068/0308 Set boiler in place Section assembly lifting weights Figure 5 Boiler model number Approximate lifting weight (pounds) Minimum sling length — (from crane hook to boiler lifting lugs) 488 2928 2' 6" 588 3490...
Page 8 - Assembling the block; Prepare and position back section; Figure 6; Figure 7
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 8 Part No. 550-100-068/0308 Assembling the block Sections are top heavy. Unbolted sections may fall if not supported, resulting in severe personal injury or death. Prepare and position back sect...
Page 9 - Install intermediate sections; Figure 8; sections
Boiler manual: • Installation • Start-Up • Maintenance • Parts 9 Part No. 550-100-068/0308 Sections are top heavy. Unbolted sections may fall if not supported, resulting in severe personal injury or death. Install intermediate sections Remove and discard 1. 3 / 8 " diameter shipping tie rods. Re...
Page 10 - Figure 9; Section arrangement
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 10 Part No. 550-100-068/0308 Assembling the block (continued) Section arrangement Figure 9 Boiler model number W = water S = steam Max number of tankless heaters Section arrangement (all heaters...
Page 11 - Perform hydrostatic pressure test; Prepare boiler and test:; Steam
Boiler manual: • Installation • Start-Up • Maintenance • Parts 11 Part No. 550-100-068/0308 Perform hydrostatic pressure test Prepare boiler and test: See 1. Figure 10 and Figure 11 for tapping locations. Install: Boiler drain (not furnished). a. Water pressure gauge — for test only. Be sure gauge c...
Page 12 - Complete block assembly; Install burner mounting plate on front
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 12 Part No. 550-100-068/0308 Insert HXT-bars through cleanout openings as shown below (omit the bottom, blue-tipped, HXT-bar in the opening Figure 12 between the front section and the first inte...
Page 13 - Install cleanout plates
Boiler manual: • Installation • Start-Up • Maintenance • Parts 13 Part No. 550-100-068/0308 Cleanout plate assembly Figure 13 Complete block assembly (continued) The boiler contains ceramic fiber and fiberglass materials. Use care when han- dling these materials per instructions on page 34 of this m...
Page 14 - Connect water boiler piping; General water piping information; Closed type
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 14 Part No. 550-100-068/0308 Connect water boiler piping General water piping information System water supply and return piping should be installed and 1. piping connections attached to boiler b...
Page 15 - Piping multiple boilers; Temp rise = High limit temp – Return water temp
Boiler manual: • Installation • Start-Up • Maintenance • Parts 15 Part No. 550-100-068/0308 Connect water boiler piping (continued) Recommended minimum pipe sizes when flow rate is Figure 16 not known (see Figure 14, page page 14) (note 1) Boiler model Supply pipe size A Return pipe size B 488 3"...
Page 16 - Connect steam boiler piping; General steam piping information:
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 16 Part No. 550-100-068/0308 Connect steam boiler piping General steam piping information: Hartford loop piping arrangement and wet return are required for 1. steam boilers. Use the Hartford loo...
Page 17 - Steam boiler piping guidelines; Minimum height of header above water line must; Drawing legend & notes
Boiler manual: • Installation • Start-Up • Maintenance • Parts 17 Part No. 550-100-068/0308 Connect steam boiler piping (continued) Model 488 through 688 steam (1 riser) Figure 23 Model 788 through 1188 steam (2 risers required) Figure 24 Improperly piped systems or undersized piping can contribute ...
Page 20 - Install jacket; Before installing jacket; must be on boiler; Remove jacket parts from cartons; CRNR; Install support brackets/channels
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 20 Part No. 550-100-068/0308 Install jacket Before installing jacket The boiler contains ceramic fiber and fiberglass materials. Use care when handling these materials per instructions on page 3...
Page 22 - Install jacket front and back panels
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 22 Part No. 550-100-068/0308 Installing (removing) jacket front, rear Figure 30 and side panels Press jacket trim down over jacket front, Figure 31 rear and side panels Install jacket (continued...
Page 25 - To pipe tankless heaters:; Pipe tankless heaters
Boiler manual: • Installation • Start-Up • Maintenance • Parts 25 Part No. 550-100-068/0308 Hot water can scald! Consumer Product Safety Commission and some states recommend domestic hot water tempera-ture of 130°F or less. When installing an automatic mixing valve, se-lection and installation must ...
Page 26 - Install water boiler controls; Low
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 26 Part No. 550-100-068/0308 Install water boiler controls Install controls: Install furnished controls per 1. Figure 36 and Figure 37. Failure to properly install, pipe and wire boiler controls...
Page 27 - Install steam boiler controls
Boiler manual: • Installation • Start-Up • Maintenance • Parts 27 Part No. 550-100-068/0308 Install steam boiler controls Install controls: Install controls where shown in 1. Figure 38 and Figure 39. Failure to properly install, pipe and wire boiler controls can result in severe damage to boiler, bu...
Page 29 - Connect breeching and venting systems; General venting information; Forced draft; Construct metal breeching:
Boiler manual: • Installation • Start-Up • Maintenance • Parts 29 Part No. 550-100-068/0308 Connect breeching and venting systems General venting information Model 88 boilers operate with positive overfire pressure. Adjust 1. damper assembly (see Figure 49, page 33) during burner start-up to achieve...
Page 31 - Install burner & wiring and fill system; To install burner
Boiler manual: • Installation • Start-Up • Maintenance • Parts 31 Part No. 550-100-068/0308 Install burner & wiring and fill system To install burner Unpack burner. 1. Place gasket around air tube and against burner mounting flange. 2. If sealing rope is used, apply 1 / 8 " continuous bead o...
Page 32 - Install fuel piping; Gas piping; Fuel oil piping; • Use anti-syphon device when any part of the oil tank
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 32 Part No. 550-100-068/0308 Install fuel piping Gas piping In sizing the gas piping, the following factors should be consid- 1. ered: Diameter and length of the gas supply piping. a. Number of ...
Page 33 - Make final adjustments; Adjust burner and damper assembly:; Flue gas temperature no lower than 330°F
Boiler manual: • Installation • Start-Up • Maintenance • Parts 33 Part No. 550-100-068/0308 Make final adjustments Flue collar/damper assembly Figure 49 Adjust burner and damper assembly: Lock flue damper OPEN ( 1. Figure 49). Make final burner adjustments using combustion test equipment to assure p...
Page 34 - Handling ceramic fiber and fiberglass materials; REMOVAL OF FRONT PLATE OR CLEANOUT PLATE MATERIALS; NIOSH stated First Aid.; Avoid breathing dust and contact with skin and eyes.; NIOSH stated First Aid.
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 34 Part No. 550-100-068/0308 Handling ceramic fiber and fiberglass materials REMOVAL OF FRONT PLATE OR CLEANOUT PLATE MATERIALS The burner front plate and cleanout plate gaskets contain ceramic ...
Page 35 - Ratings
Boiler manual: • Installation • Start-Up • Maintenance • Parts 35 Part No. 550-100-068/0308 Ratings Boiler model number I=B=R burner capacity Gross I=B=R output Net I=B=R ratings Boiler H.P. Combustion efficiency Thermal efficiency Net firebox volume Flue gas volume Positive pressure in firebox Flue...
Page 36 - Dimensions; Model
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 36 Part No. 550-100-068/0308 Dimensions Dimensions (inches) Model A B C D E L W H 488 23 — — 10 54 ¾ 34 ¾ 30 23 C\, 588 31 — — 10 54 ¾ 42 ¾ 38 31 C\, 688 39 — — 10 54 ¾ 50 ¾ 46 39 C\, 788 47 — —...
Page 38 - Parts; Item
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 38 Part No. 550-100-068/0308 Parts Item Description Part number 1 Front sections (8823) 316-301-210 2 Regular intermediate section (8825) 316-301-212 3 Tankless intermediate section (8826) 316-3...
Page 40 - Warranty; Weil-McLain Limited Warranties; Ultra
Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners 40 Part No. 550-100-068/0308 Warranty Residential & Commercial Cast Iron Boilers Re side ntial Water Warranty — Limited Lifetime Re side ntial Steam Warranty — Li mite d 10 Year Comme ...