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Weil-McLain 94 Series 3 Water and steam boilers — for Gas, Light Oil, & Gas/Light Oil-Fired Burners
44 Part No. 550-110-275/1018
Parts
Item Description Part No.
A Front section (casting # 9517) 318-102-508
B Back section water & steam w/8” round return flange
(casting # 9518)
318-102-518
B Back section water only for 10” square return flange adapter
(casting # 95218)
318-102-528
C Regular intermediate section (casting # 9515) 318-102-538
C1 Tankless intermediate section (casting # 9516) 318-102-548
C2 Supply intermediate sections (casting # 9519) 318-102-578
6” bottom elastomer seal (2 per joint) 592-800-007
9” top elastomer seal (1 per joint) 592-800-005
5/8” x 10” draw rod without nut (4 per joint) intermediate to
intermediate
560-134-490
5/8” x 11” draw rod without nut (4 per joint) front or back to
intermediate
560-134-495
5/8” hex nut (2 per draw rod) 561-928-224
5/8” washer, plain, ASTM F-436 (1 per draw rod) 562-248-710
Flue brush 591-706-185
Flue brush rod, 44” 591-706-222
Flue brush rod, 62” 591-706-223
Flue brush spacer, 48” 591-706-240
Flue brush handle, flexible wire 591-706-226
1/8” diameter sealing wick (3’ for front observation port, 1’ for
relief plate, 1’ for damper locking plate
590-735-145
3/8” diameter sealing rope (6’ for rear access shield, 2’ for rear
observation port, 2’ for front observation port, 12’ for draft hood
counter flange, 3’ per cleanout plate
590-735-150
5/8” diameter Silicone coated rope for firebox perimeter, 22’
length
590-735-154
5/8” diameter Sealing rope, 12’ length, for flue way perimeter 590-735-153
Construction adhesive for rope (11 oz. caulking tube) 591-641-850
Silicone sealant (RTV 700 or equivalent) (3 oz. tube)
(approximately .47 oz. per joint)
591-638-851
K40 Back access door assembly (includes door liner, handle and
rope)
340-004-700
Refractory liner for back access door 387-834-906
Mounting stud (4 required for access door) 560-340-560
K41 Refractory shield for back access opening 387-834-905
M Cleanout plate (casting # 9254) 330-061-000
Wing Nut for cleanout with ½” tapping 330-060-700
Stud ½”-13 x 4 ¼” long 560-340-570
K20 Cleanout door assembly 474, includes door, hinge, hinge plate,
handle, liner and accessories
340-004-740
Item Description Part No.
Wing nut assembly — with 3/8 x 1 ¼’ stud (threads into
mounting stud) (casting # 9256)
340-004-635
Mounting stud, ½"-13 x 2
1
⁄8" long 560-340-560
K22 Hinge for cleanout door (casting # 9254) 330-060-500
K24 Hinge plate for cleanout door (casting # 9253) 330-060-400
Liner for cleanout door 590-524-867
L Heater cover plate carton (includes cover plate, studs, nuts, and
gasket)
387-800-500
L1 Gasket for heater cover plate 590-317-544
F3 Front observation port assy. #462 (includes bottom, intermediate,
& top observation port plates, spring, rope, & sight glass
340-004-620
Front sight glass 591-419-198
F4 Back observation Port assembly (includes frame, rope, gasket,
plugs, and sight glass)
385-600-099
Back sight glass 591-419-199
Gasket for back sight glass 590-317-580
D Flue collar assembly 20” (includes flue collar w/flange, damper,
damper quadrant, locking plate, swivel, bracket, counter flange,
and rope
340-004-616
Quadrant for flue collar 330-056-634
Damper blade for flue collar 460-003-640
Damper locking plate 563-530-784
Stud, ½”-13 x 4 ¼” long 560-340-570
D1 Counter flange for 20” flue 460-030-930
D2 Flue adapter, 22” welded steel 460-030-936
O1 Return flange reducer, 8” to 6” (includes hardware and gasket) 388-135-300
O2 Gasket for return flange reducer, round 590-317-572
O3 Return flange adapter, 10” 330-062-001
O4 Gasket for return flange adapter, rectangular 590-317-620
N
6” supply elbow tapped, water only (casting # 9246) 330-060-200
8” supply elbow tapped, water only (casting # 9248) 330-060-300
8” supply elbow tapped, steam only (casting # 92481) 330-060-310
N1 Gasket for supply outlet (2 required) 590-317-546
Stud, 5/8”-11 x 3” long 560-340-579
N2 Cover plate for supply outlet, 2” (casting # 9440) 330-062-005
Bolt, 5/8”-11 x 1
3/4” long 562-135-767
N2 Cover plate for supply outlet, 4” (casting # 92140) 330-059-910
N3 Top supply outlet, 10” flanged (casting # 92410) 330-060-210
N4 Gasket for top supply outlet, 10” (2 required per fitting) 590-317-625
P Tankless heater (when used) — heater, gasket, nuts and studs 590-921-910
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