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Weil-McLain 94 Series 3 Water and steam boilers — for Gas, Light Oil, & Gas/Light Oil-Fired Burners
10 Part No. 550-110-275/1018
Figure 9 Section arrangement (location of TI and SI sections, numbered from REAR to FRONT of block assembly)
Boiler
W = water
S = steam
Placement of special intermediate sections (TI and SI)
[numbering from REAR to FRONT, beginning with rear section as section number 1]
TI sections
with tankless coil openings
SI sections
with supply
tappings
# of coils ——
>
12 3 4 5 6 7 8
894 W or S 5 5, 7 3, 5, 7 — — — — — —
994 W or S 6 6, 8 2, 4, 6 2, 4, 6, 8 — — — — —
1094 W or S 4 2, 4 2, 4, 7 2, 4, 7, 9 — — — — —
1194 W or S 4 2, 4 2, 4, 8 2, 4, 8, 10 — — — — —
1294 W or S 4 2, 4 2, 4, 9 2, 4, 9, 11 2, 4, 7, 9, 11 — — — —
1394 W or S 5 3, 5 3, 5, 10 3, 5, 10, 12 3, 5, 8, 10, 12 — — — —
1494 W or S 6 4, 6 2, 4, 6 4, 6, 11, 13 2, 4, 6, 11, 13 2, 4, 6, 9, 11, 13 — — —
1594 W or S 6 4, 6 2, 4, 6 4, 6, 12, 14 2, 4, 6, 12, 14 2, 4, 6, 10, 12, 14 — — —
1694 W or S 6 4, 6 2, 4, 6 4, 6, 13, 15 2, 4, 6, 13, 15 2, 4, 6, 9, 11, 13 2, 4, 6, 9, 11, 13, 15 — —
1794 W or S 7 5, 7 3, 5, 7 5, 7, 14, 16 3, 5, 7, 14, 16 3, 5, 7, 10, 12, 14 3, 5, 7, 10, 12, 14, 16 — —
1894 W or S 8 6, 8 2, 4, 6 2, 4, 6, 8 2, 4, 6, 8, 15 2, 4, 6, 8, 15, 17 2, 4, 6, 8, 11, 13, 15 2, 4, 6, 8, 11, 13, 15, 17 —
1994 W or S 6 4, 6 2, 4, 6 4, 6, 9, 11 2, 4, 6, 9, 11 2, 4, 6, 9, 11, 16 2, 4, 6, 9, 11, 16, 18 2, 4, 6, 9, 11, 14, 16, 18 —
2094 W or S 6 4, 6 2, 4, 6 4, 6, 10, 12 2, 4, 6, 10, 12 2, 4, 6, 10, 12, 17 2, 4, 6, 10, 12, 17, 19 2, 4, 6, 10, 12, 15, 17, 19 —
2194 W 6 4, 6 2, 4, 6 2, 4, 6, 9 2, 4, 6, 9, 11 2, 4, 6, 9, 11, 13 2, 4, 6, 9, 11, 13, 16 — 18, 20
2294 W 6 4, 6 2, 4, 6 2, 4, 6, 10 2, 4, 6, 10, 12 2, 4, 6, 10, 12, 14 2, 4, 6, 10, 12, 14, 17 — 19, 21
2394 W 6 4, 6 2, 4, 6 2, 4, 6, 9 2, 4, 6, 9, 11 2, 4, 6, 9, 11, 13 2, 4, 6, 9, 11, 13, 15 2, 4, 6, 9, 11, 13, 15, 18 20, 22
2494 W 8 6, 8 2, 4, 6 2, 4, 6, 8 2, 4, 6, 8, 12 2, 4, 6, 8, 12, 14 2, 4, 6, 8, 12, 14, 16 2, 4, 6, 8, 12, 14, 16, 19 21, 23
2594 W 8 6, 8 2, 4, 6 2, 4, 6, 8 2, 4, 6, 8, 11 2, 4, 6, 8, 11, 13 2, 4, 6, 8, 11, 13, 15 2, 4, 6, 8, 11, 13, 15, 17 22, 24
2194 S 2 2, 9 2, 9, 11 2, 9, 11, 13 2, 9, 11, 13, 20 — — — 4, 6, 16, 18
2294 S 2 2, 10 2, 10, 12 2, 10, 12, 14 2, 10, 12, 14, 21 — — — 4, 6, 17, 19
2394 S 2 2, 9 2, 9, 11 2, 9, 11, 13 2, 9, 11, 13, 15 2, 9, 11, 13, 15, 22 — — 4, 6, 18, 20
2494 S 8 2, 8 2, 8, 12 2, 8, 12, 14 2, 8, 12, 14, 16 2, 8, 12, 14, 16, 23 — — 4, 6, 19, 21
2594 S 8 2, 8 2, 8, 11 2, 8, 11, 13 2, 8, 11, 13, 15 2, 8, 11, 13, 15, 17 2, 8, 11, 13, 15, 17, 24 — 4, 6, 20, 22
If the boiler was ordered with tankless coils, the heaters must be located on the right hand side of the boiler. It is important to position the TI
sections (where used) in the exact location in the boiler section assembly as shown above so the heater knockout openings in the jacket side
panels will accommodate the heaters. If the TI sections and internal water heaters are not positioned in the boiler section assembly as shown
above, the installer must cut openings in the jacket side panels to accommodate the heaters.
e. If, for any reason, the gap around machined port open-
ing exceeds .032", check for rope extending from rope
grooves, dirt on port openings or sockets, or misaligned
lugs. If corrections are made and gap still exists, contact
your Weil-McLain distributor or sales office before con-
tinuing installation.
After erecting first intermediate section, check
both sections for plumb. Repeat the check as each
additional section is installed. Failure to plumb sec-
tions can cause misaligned piping and breeching,
possibly resulting in property damage.
5. Repeat steps 1-5 for all remaining sections. NOTE — use
5
⁄8"
x 10" draw rods between intermediates. When used, install TI
(tankless intermediate) and SI (supply intermediate) sections
in the positions shown in Figure 9, page 10.
6. Check each section for proper sealing rope position before
proceeding to next section.
Failure to position sealing rope properly can
cause boiler to not seal gas-tight. Gas tight seal
prevents possible flue gas leakage and carbon
monoxide emissions, resulting in severe personal
injury or death.
7. Install remaining intermediate sections and front section
using the same procedure.
If using tankless heater (TI) sections
• Install tankless heaters and gaskets or heater cover plates
and gaskets.
• Use
3
⁄8" x
3
⁄4"studs, washers and nuts.
Assembling the block
(continued)
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