OSB 2 SERIES User Manual

24 Part Number 550-110-772/0816
OSB Series 2 Oil-Fired Steam Boilers – Boiler Manual
11 Replacement parts continued
Figure 16 Jacket parts and replacement instructions
The boiler contains ceramic fiber and fiberglass
materials.Usecarewhenhandlingthesematerials
per instructions on page 28 of this manual. Failure
to comply could result in severe personal injury.
Before installing jacket:
Before installing jacket:
1. Remove the following knockouts:
• Steamreturnknockout(lowerleftbackpanel).
• Reliefvalveknockout(upperrightbackpanel).
• Rectangular tankless heater and tankless control
knockouts (left side panel), if tankless heater is to be
installed.
• Remaining knockout(right back panel) if indirect-red
water heater is to be installed.
2. Makesureallunusedtappingsareplugged.
3. These parts may be on boiler:
• Supplypiping
• Drainvalve
• Tanklessheater
4. These parts must be off boiler:
• Breechingconnection
• Steamorwatertrimpartsandpiping
• Tanklessheatercontrolandpiping
• Returnpiping
• Steamorwaterreliefvalveandpiping
5. Remove burner mounting door by removing locking nut and
lifting door off hinge. Do not remove hinge.
To install jacket:
1. Installjacketfrontpaneltofrontsection,makingsureburner
door hinge lugs extend through holes in lowerjacket leg.
Securewithtwo(2)3/8”x1/2”blackmachinescrews.
2. Right and left side pieces are shipped as straight pieces.
Before installing, bend about 90° at perforation as shown, to
form sides and back panels.
a. Securesidepanelstofrontpanelwithfour(4)sheetmetal
screws.
b. Tosecurebackpanels,usingtwo(2)1/4”x1/2”self-tapping
screws:
 1)Startupperscrewinboilersection.Donottighten.
 2)Slipkeyholeopeninginbackpanelsbehindscrew.
 3)Installlowerscrewandtightenbothscrews.
c. Installtoppanelandsecurewithtwo(2)sheetmetal
screws.
3. Reinstall burner mounting door and secure locking nut on
stud, making sure door is secured gas-tight.
 Gas-tightsealmustbeobtainedatdoortoprevent
possibleue gas leakage and carbon monoxide
emissions, leading to severe personal injury or death.
Item
number
Description Boiler
model
number
Part number
1
Jacket panel, front
All 426-722-005WT
2
Jacket panel, left side and
back
OSB-3
OSB-4
OSB-5
OSB-6
426-722-227WT
426-722-229WT
426-722-231WT
426-722-233WT
3
Standard Jacket panel,
top for back outlet
OSB-3
OSB-4
OSB-5
OSB-6
426-722-015WT
426-722-017WT
426-722-019WT
426-722-021WT
4
Jacket panel, right side
and back
OSB-3
OSB-4
OSB-5
OSB-6
426-722-037WT
426-722-039WT
426-722-041WT
426-722-043WT
Jacket hardware kit
(screws for assembly)
All 386-700-845WT
Optional Top Vent Service
Kit
(includes jacket top, jacket cover,
collector hood, vent cover and
vent cover strap)
OSB-3
OSB-4
OSB-5
OSB-6
386-700-200WT
386-700-201WT
386-700-202WT
386-700-203WT

OSB 2 SERIES Specifications

General

Brand	OSB
Model	2 SERIES
Category	Boiler
Language	English