Weil-McLain 88 manual Install jacket, Before installing jacket, Remove jacket parts from cartons

Weil-McLain 88 Water and steam boilers — Series 2 — for Gas, Light Oil, & Gas/Light Oil-Fired Burners

Install jacket

Before installing jacket

The boiler contains ceramic fiber and fiberglass materials. Use care when handling these materials per instructions on page 34 of this manual. Failure to comply could result in severe personal injury.

1.These parts must be on boiler:

a.Plugs for unused tappings

b.Supply and return piping and steam supply header

c.Cleanout plates

d.Tankless heaters (when used), tankless heater cover plates (when used), tankless heater piping (when used)

e.Flue damper assembly

f.Observation port assemblies

2.These parts may be on boiler:

a.Burner mounting plate and burner

3.These parts must be off boiler:

a.Water or steam gauge

b.Limit control and low water cutoff

c.Gauge glass and gauge glass cocks, tri-cocks

d.Drain cock

Remove jacket parts from cartons

1.Locate jacket cartons.

2.Remove jacket parts from cartons as needed. Leave in cartons as long as possible to avoid damage.

3.Jacket parts are in the boxes listed below:

Part	Box label descriptions
Jacket screws (in jacket corner boxes)	included in CRNR boxes
Jacket support brackets & hex nuts	BKT
Jacket side support channels, upper & lower	included in TRM/CHNL boxes
Jacket front/rear support channels, upper & lower	COM
Jacket front panel	PNL-F
Jacket back panel	PNL-B
Jacket side and top panels	L / R / T
Jacket corners	CRNR
Jacket trim	TRM/CHNL

Install support brackets/channels

1.Place upper and lower support brackets over draw rods as shown in Figure 29, page 21. Place the brackets on the sections as given in Figure 27. Sections are numbered from front to back.

2.Fasten each bracket loosely using two 5/8" nuts screwed onto the ends of the tie rods as shown.

Models 488 through 988 do not require lower support brackets. Only upper brackets are required.

Fasten all nuts and screws loosely during assembly to allow adjustment after all jacket frame parts are in- stalled.

20

Figure 27 Place support brackets as listed below

Boiler	Upper brackets on		Lower brackets
	sections:		on sections:
488	2,	3	None
588	2,	4	None
688	2,	5	None
788	2,	6	None
888	3,	6	None
988	2, 5, 8		None
1088	3, 6, 9		6
1188	3, 6, 9		6
1288	3, 7, 10		7
1388	3, 7, 11		7
1488	3, 7, 10, 13		7
1588	2, 5, 8, 11, 14		8
1688	2, 5, 9, 12, 15		9
1788	2, 5, 9, 13, 16		9
1888	2, 6, 10, 14, 17		10

3.Attach the upper channels to the upper supports as shown in callouts , and , Figure 29, page 21. Use two #10 x ½" screws at each bracket. Models 988 and larger have two-piece channels.

•The side channels are labelled A and B in Fig- ure 29. Figure 28 gives the lengths of the side channel parts for each model.

•The channels at the boiler front and rear are part numbers 426400030 & 426400031, re- spectively.

Figure 28 Upper and lower side channel lengths

Boiler	Upper channel lengths			Lower channel lengths
		(inches)			(inches)
	A		B	A		B
488	30		NA	26		NA
588	38		NA	34		NA
688	46		NA	42		NA
788	54		NA	50		NA
888	62		NA	58		NA
988	35		35	66		NA
1088	43		35	40		34
1188	43		43	40		42
1288	51		43	48		42
1388	51		51	48		50
1488	51		59	48		58
1588	59		59	56		58
1688	67		59	64		58
1788	67		67	64		66
1888	71		71	72		66

4.Attach the four jacket corners to the upper channels as shown in callout , Figure 29, page 21. Corner part numbers are: 426400054 (front left), 055 (front right), 056 (back left), and 057 (back right).

5.Attach the lower side, front and rear channels to the jacket corners as shown in callouts and of Figure 29, page 21. Models 1088 and larger have two-piece side channels. The channels are labelled A and B in Figure 29. Figure 28 gives the lengths of these parts for each model. Front and rear lower channels are part numbers 426400032 and 426400033.

Part No. 550-100-068/0308