Dettson Lowboy 154 Series, Installation Instructions And Homeowner'S Manual

Page: 21 / 28

Table 9 – Airflow data model with 1.0 HP 4-speed motor (PSC)
EXTERNAL STATIC PRESSURE WITH AIR FILTER
BLOWER SPEED
0.2” (W.C.) 0.3” (W.C.) 0.4” (W.C.) 0.5” (W.C.) 0.6” (W.C.) 0.7” (W.C.)
HIGH 2185 2115 2045 1995 1905 1820
MED-HIGH 1900 1845 1810 1760 1685 1635
MED-LOW 1475 1465 1460 1435 1380 1335
LOW 1140 1125 1110 1100 1085 1060
Table 10 – Minimum clearances from combustible materials
LOCATION CLEARANCES RECOMMENDED ACCESS
FOR SERVICE
SIDES
FURNACE 2.54 cm (1”) 0.6 m (24”)
PLENUM AND WARM-AIR DUCT WITHIN 6ft. OF FURNACE 2.54 cm (1”) Ø
BACK ACCESS PANEL TO BLOWER 10.16 cm (4”) 0.6m (24”)
TOP
FURNACE OR PLENUM 5.08 cm (2”) Ø
HORIZONTAL WARM AIR DUCT WITHIN 6FT. OF FURNACE 5.08 cm (2”) Ø
BOTTOM FURNACE (COMBUSTIBLE FLOOR) 0 cm (0”) Ø
FLUE PIPE
AROUND FLUE PIPE 22.86 cm (9”) Ø
FRONT FURNACE 20.32 cm (8”) 0.6m (24”)
20