Burnham SM-6 manual Vent System Cross Section

Figure 4

VENT SYSTEM CROSS SECTION

h.Secure boiler to boiler mounting wall bracket with five (5) ¼”-20 x ¾” long machine screws and washers provided.

NOTE: Tools required — 7/16” socket, extension bar(s) and drive ratchet

i.Secure interior telescoping intake air duct to back plate of boiler. Pull duct forward until duct and weld studs are engaged through 4½” x 5½” rectangular opening and holes in back plate. Make sure gasket is in place and flat against back plate. Attach duct with four (4) ¼”-20 brass hex nuts, lockwashers and flat washers.

3INSTALLING EXTERIOR TELESCOPING INTAKE AIR DUCT (See Figures 4 and 5)

a.Position the exterior telescoping intake air duct into wall penetration and insert duct inside interior duct already in place. Push duct inward until wall flange is against the wall, check for level and mark the four

(4)¼” diameter clearance holes for securing wall flange to exterior wall. Remove duct from wall.

Figure 5

8

EXPLODED BOILER ASSEMBLY