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Weil-McLain Boiler manual

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Table of contents for the manual

  • Page 1

    • Selection data • Installation • Piping • W ater treatment This manual must only be used by a qualified heating installer/service technician. Before installing, read all instructions, including this manual, the Ultra Boiler Manual and all applicable Supplements. Consider all connections to the boilers before selecting a location and layout[...]

  • Page 2

    Part number 550-101-232/0703 2 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems Contents Hazard definitions .................................................................................................................................. 3 Selection data Controls ......................................................[...]

  • Page 3

    Part number 550-101-232/0703 3 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems 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. Hazard definitions Controls W eil-M cLain offe[...]

  • Page 4

    Part number 550-101-232/0703 4 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems Ratings and engineering data Figure 1 Ratings and engineering data (see page 5 for notes) D O E[...]

  • Page 5

    Part number 550-101-232/0703 5 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems For simplicity , the table on page 4 lists only sy stems using m ultiples of the same Ultra b oiler module. Any combination of Ultra boilers can be installed as a multiple boiler system. Figure 1 Ratings and engineering data (continued) No[...]

  • Page 6

    Part number 550-101-232/0703 6 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems 1 . Boiler supply and return tappings are both 1" NPT . Connect to headers with 1” pipe for Ultra-80 and Ultra-105; 1¼" pipe for Ultra-155 and Ultra-230. For wall-hung boilers, water piping and gas pipe can be routed through b[...]

  • Page 7

    Part number 550-101-232/0703 7 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems 06-24-03 CONFIDENTIAL REVIEW & COMMENT ONL Y Placement and mounting information Placement, general 1 . Locate multiple boilers in boiler room according to: • Figure 3 (side-to-side), or • Figure 4 (back-to-back). For wall mounting,[...]

  • Page 8

    Part number 550-101-232/0703 8 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems 06-24-03 CONFIDENTIAL REVIEW & COMMENT ONL Y Easy -Fit ® P iping Figure 6 Single-sided connection — Maximum connected boiler output: 2-inch manifolds — 450 MBH 3-inch manifolds — 1400 MBH 4-inch manifolds — 2900 MBH Figure 7 D[...]

  • Page 9

    Part number 550-101-232/0703 9 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems 06-24-03 CONFIDENTIAL REVIEW & COMMENT ONL Y Figure 8 Piping schematic — Typical piping for multiple Ultra boilers, using Weil-McLain Easy-Fit ® Manifolds 1 Flow/check valve (each boiler) 2 Isolation valves (when used) 3 Cap 4 Easy-[...]

  • Page 10

    Part number 550-101-232/0703 10 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems Figure 9 Typical piping for multiple Ultra boilers, using Weil-McLain Easy-Fit ® Manifolds Easy -Fit ® P iping (continued) 1 Flow/check valve (each boiler) 2 Isolation valves (when used) 3 Caps 4 Easy-Fit ® Manifold (supply), sized per[...]

  • Page 11

    Part number 550-101-232/0703 11 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems Figure 10 Typical piping for multiple Ultra boilers, Weil-McLain Easy-Fit ® Manifolds, and indirect water heaters 1 Flow/check valve (each boiler) 2 Isolation valves (when used) 3 Caps 4 Easy-Fit ® Manifold (supply), sized per Fig. 1 or[...]

  • Page 12

    Part number 550-101-232/0703 12 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems Figure 11 Typical piping for multiple Ultra boilers, using Weil-McLain Easy-Fit ® Manifolds and heat exchanger Use isolation heat exchanger for: 1. Large volume systems with high mineral conte nt in water . 2. Systems exposed to untreate[...]

  • Page 13

    Part number 550-101-232/0703 13 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems Figure 12 Manifolding combution air piping Combustion air & vent piping installation Vent piping 1. Each boiler requires an individual vent pipe, in- stalled and terminated per the Ultra Boiler Manual and Ultra Boiler V enting Suppme [...]

  • Page 14

    Part number 550-101-232/0703 14 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems Figure 13 Connecting gas supply piping Gas piping Connecting gas supply piping 1 . Remove jacket front panel and refer to Figure 13 to pipe gas to boiler . a. Install ground joint union for servicing, when required. b . Install manual shu[...]

  • Page 15

    Part number 550-101-232/0703 15 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems Figure 14 Common gas piping, with manifolded gas header Common gas piping installation 4 . Size gas piping from meter outlet to entrance of gas header in acc ordance with T ables 1 and 2 belo w . Fo r gases w ith other specific gravity or[...]

  • Page 16

    Part number 550-101-232/0703 16 GA S - FIRED WA TER BOILER — Installation Manual — Multiple-boiler S ystems Additional instructions Air for boiler room ventilation 1. Follow instructions in Ultra Boiler Manual to ensure the boiler room provides sufficient air infiltration. Wiring 1. Refer to boiler sequencing control instructions and Ultra Boil[...]