L.B. White Guardian AD250 Assembly And Installation Instructions Manual page 7

2. Ensure brackets are level and plumb. Stabilize with nails at lower holes. See Fig. 13. Drill pilot
holes at upper and lower main support holes. Secure brackets to building with 3/8 in. x 4 in. lag
screws and washers. Tighten screws. Check with a level. See Fig. 14.
FIG. 14
Main support
holes
3. Lift the heater onto the bracket assembly, and slide the duct assembly through the wall opening.
4. Position the heater so duct is fl ush with inner wall of building and holes in base align to holes in
brackets.
5. Insert spacers between the openings in heater base and holes in brackets. Base holes to be used
vary depending on center to center of building studs. Secure heater to brackets using 1 3/4 in. bolts,
washers and lock nuts. See Figs. 15 and 16.
FIG. 15
MOTOR END
HEATER BASE
BLOWER OUTLET SIDE OF HEATER
16" ON CENTER
16 in. (40.6cm)
Lag screw
with washer
24 in. (61cm) 24" ON CENTER
Outdoor Installation Kit • AD250 & AW250
Outdoor Installation Kit
BURNER END
7