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Part Number 550-110-641/0605
20
PFG SerieS 7 GaS-Fired Water Boiler — Boiler Manual
Item Description Part Number
1 Draft hood: PFG-5 (7” x 7” dia x 24.45”)
PFG-6 (8” x 8” dia x 27.80”)
PFG-7 (9” x 9” dia x 31.05”)
PFG-8 (9” x 9” dia x 36.55”)
450-021-200
450-021-201
450-021-202
450-021-205
2 Collector hood: PFG-5
PFG-6
PFG-7
PFG-8
450-014-819
450-014-820
450-014-821
450-014-822
3 Right hand end section, 51113 312-804-405
4 Intermediate section, 51125 312-804-416
5 Left hand end section, 51113 312-804-405
NS Section replacement kit (one per joint; 4 seals, 4 ball bearings, and sealant) 386-700-856
6 Burner, main 512-200-022
NS Burner, main with pilot bracket 512-200-023
7 Right hand/left hand base rail 452-800-655
8 Base front panel: PFG-5
PFG-6
PFG-7
PFG-8
452-800-500
452-800-501
452-800-502
452-800-503
9 Front base insulation: PFG-5
PFG-6
PFG-7
PFG-8
591-222-020
591-222-021
591-222-022
591-222-025
10 Base access panel: PFG-5
PFG-6
PFG-7
PFG-8
452-800-540
452-800-541
452-800-542
452-800-543
11 Manifold: PFG-5
PFG-6
PFG-7
PFG-8
591-125-820
591-125-821
591-125-822
591-125-823
12 Base back panel: PFG-5
PFG-6
PFG-7
PFG-8
452-800-580
452-800-581
452-800-582
452-800-583
13 Back base insulation: PFG-5
PFG-6
PFG-7
PFG-8
591-222-030
591-222-031
591-222-032
591-222-033
14 Tie rod without nut (2 per boiler): PFG-5 ⁵⁄₈”-11
UNC
x 15”
PFG-6 ⁵⁄₈”-11
UNC
x 18”
PFG-7 ⁵⁄₈”-11
UNC
x 21”
PFG-8 ⁵⁄₈”-11
UNC
x 24”
560-134-506
560-134-507
560-134-508
560-134-509
15 Flue baffle: PFG-5
PFG-6
PFG-7
PFG-8
452-800-449
452-800-450
452-800-451
452-800-452
16 Flue baffle insulation: PFG-5
PFG-6
PFG-7
PFG-8
591-222-095
591-222-096
591-222-097
591-222-098
17 Spill switch, PFG-5 only 510-300-014
18 Rollout thermal fuse element, PFG-5 only 512-050-230
19 Radiation shield (2 per joint) 460-003-700
20 Section alignment ball bearings, 1/4” diameter (4 per joint)
Ball bearing kit (4 bearings)
562-930-250
386-700-856
NS Main burner orifice (natural gas) #37 drill 560-529-055
NS Main burner orifice (propane gas) 1.65 mm 560-529-056
Section III: Replacement Parts
The boiler contains ceramic fiber and fiberglass materials. Use care when handling these materials, per
instructions on page 15 of this manual. Failure to comply could result in severe personal injury.
To avoid personal injury, before replacing any parts on the boiler:
1. Turn off power.
2. Shut off gas supply.
3. Allow boiler to cool.