Burnham MST629 Flueway Baffle Installation, Baffle Usage, Closing / Securing Burner Swing Door

Figure 5C: Top View - Burner Swing Door Fully Closed but Not Properly Secured or Sealed

E.Flueway Baffle Installation.

Flueway baffles are enclosed into Part Carton. Baffle requirements differ by boiler model, see Table 2.

table 2: baffle USAGE

Boiler	Baffle Usage
Model	2nd Pass	3rd Pass
MST288	None
MST396	(2)
MST513		None
	P/N 100042-01
MST629

NOTE: Read caution statement before proceeding.

CAUTION

These baffles will generate higher efficiencies and lower stack temperatures. Under certain conditions, a lower gross stack temperature entering the chimney has the potential to

be cooled below the dew point and create condensate on interior surfaces. Flue gas condensate is corrosive, which requires special consideration and must be addressed immediately.

DO NOT install baffles until you have read Section V, "Venting" completely.

1.To install flueway baffles, provided in miscellaneous part cartons, as follows, refer to Figure 6 and

Table 2:

14

•Models MST396, MST513 and MST629 - To install flueway baffle in 2nd pass flueway on left side of boiler, hold baffle with word "Left" readable at the top. Slide baffle in flueway until position tab touches fins on right side of 2nd pass flueway. To install flueway baffle in 2nd pass flueway on right side of boiler, hold baffle with word "Right" readable at the top. Slide baffle in flueway until position tab touches fins on left side of 2nd pass flueway.

F.Closing / Securing Burner Swing Door.

1.To close and secure Burner Swing Door:

a. From fully open position, rotate the door to the closed position.

b. Lift door upward into the build-in cast ramp/door rest (protruding from the bottom of the front section casting – see Figure 5A).

c. Use one hand to apply pressure directly to the door to hold it in closed position while re- installing earlier removed door-latching hardware

(3/8”-16 x 1-3/4” tap bolt and 5/16” washer).

Prior to re-installation, apply a drop of supplied

Anti-seize (pouch provided in Part Carton) to both tap bolts for rust protection and to facilitate easy removal, if burner door is to be open for inspection and service. ALWAYS INSTALL RIGHT SIDE LATCHING HARDWARE FIRST, THEN INSTALL EARLIER REMOVED LEFT SIDE HINGE HARDWARE (3/8”-16 X 1-3/4” TAP BOLT AND 5/16” WASHER) SECOND. Apply additional pressure while hand tightening the hardware as far as possible and then release the pressure.