Williamson-Thermoflo SCH High Boy, Manual Manual, Page: 34 / 39

SCH & SCL
Oil Furnaces
– Furnace Manual
34
670-000-006-1007
12 Dimensions and ratings
Figure 7 Model SCH-105 / 160 dimensional data – ALL DIMENSIONS IN INCHES
Flue pipe
W idth Depth Height W idth Depth W idth Depth dia.
A B C D E F G
SCH-105 21" 24½" 48 19 ¾" 19¾" 18¾" 18-11/16" 3"
SCH-160 25" 28½" 58¼" 23¾" 23¾" 22" 21-11/16" 4"
Model
Furnace casing
W arm air supply Return air
(top) (side)
DNS-1003 Rev. A
Blower Maximum
Beckett Riello
Overfire AFUE Blower Motor HP / Cooling
Burner Burner pressure %
Size Speed
at 0.25"WC at 0.50" WC Capacity
70 000 59 800 0.50-60W X 81.5 Low 960 920 3.0 tons
88 200 74 600 0.50-60W 0.50-60W 81.0 Low 960 920 with high
105 000 87 800 0.60-60W X 80.3 Med. - Low 1 100 1 000 blower
100 800 83 900 X 0.60-60W 80.3 Med. - Low 1 100 1 000 speed
119 000 97 000 0.75-70B 0.75-70B 82.2 Med. - Low 1 350 1 310 5 tons
135 800 110 000 0.85-70B 0.85-70B 81.5 Med. - Low 1 350 1 310 with high
159 600 127 000 1.00-70B 1.00-70B 80.3 Med. - High 1 605 1 510 blower speed
Model Input Output
Nozzle installed
Flue draft Blower speed
Blower CFM
with filter
Ratings & Performance Direct drive units
+0.04 to +0.16 +0.10 to +0.25 10 x 10 1/2-4speeds
0.85-4speeds +0.04 to +0.18 +0.10 to +0.25 12 x 10
Max. temp. rise Filter quantity Electrical load Min. ampacity Max. fuse size Shipping weight
(ºF) and size (amps) for wire sizing (amps) (pounds)
SCH-105 52 - 75 (1) 20 x 20 15.4 17.7 20 200
H-160 50 - 80 (1) 24 x 24 16.9 19.5 20 260
Model Volt-Hertz-Phase
115- 60 -1
SC
SCH-105
SCH-160
NOTICE: SCH furnaces are CSA design certified
for installation on combustible flooring.