8
S8XB-SF-2B-EN
MODEL
S8X2B080M4PSBA
(a)
S8X2D120M5PSBA
(a)
TYPE
Upflow / Horizontal / Downflow Upflow / Horizontal / Downflow
RATINGS
(b)
1st Stage Input BTUH 52,000 84,000
1st Stage Capacity BTUH (ICS) 42,300 67,700
2nd Stage Input BTUH 80,000 120,000
2nd Stage Capacity BTUH (ICS)
(c)
64,700 97,500
1st Stage Temp. Rise (Min.-Max.)°F
30 — 60 25 — 55
2nd Stage Temp. Rise (Min.-Max.)°F
30 — 60 30 — 60
AFUE (%)
(c)
80 80
Return Air Temp. (Min. - Max.)°F
55°F - 80°F 55°F - 80°F
BLOWER DRIVE DIRECT DIRECT
Diameter — Width (In.)
11 X 8 11 X 11
No. Used 1 1
Speeds (No.)
(d)
CTM – 9 CTM – 9
CFM vs. in. w.g.
See Fan Performance Table See Fan Performance Table
Motor HP
3/4
1
RPM 1050 1050
Volts/Ph/Hz 120 / 1 / 60 120 / 1 / 60
FLA 9.2 10.9
COMBUSTION FAN — Type
PSC PSC
Drive — No. Speeds
Direct - 2 Direct - 2
Motor RPM
3200 / 2400 3200 / 2900
Volts/Ph/Hz 120 / 1 / 60 120 / 1 / 60
FLA 0.29 0.33
Inducer Orifice 1.75 2.15
FILTER — Furnished? No No
Type recommended High Velocity High Velocity
High Vel. (No.-Size-Thk.)
1 - 16 X 25 - 1 in. 1 - 24 X 25 - 1 in.
VENT PIPE DIAMETER — Min (in.)
(e)
4 Round 4 Round
HEAT EXCHANGER – Type
Aluminized Steel Aluminized Steel
Gauge (Fired)
20 – 19 20 – 19
ORIFICES — Main
Nat. Gas Qty. — Drill Size
4 - 45 6 - 45
L.P. Gas Qty. - Drill Size
4 – 56 6 – 56
GAS VALVE
Redundant - Two Stage Redundant - Two Stage
PILOT SAFETY DEVICE – Type 120 V SiNi Igniter 120 V SiNi Igniter
BURNERS — (QTY)
4 6
POWER CONN. — V/Ph/Hz
(f)
120 / 1 / 60 120 / 1 / 60
Ampacity (Amps)
12.0 14.1
Max. Overcurrent Protection (Amps)
15 15
PIPE CONN. SIZE (in.)
1/2 1/2
(a)
Central Furnace heating designs are certified to ANSI Z21.47 - latest edition.
(b)
For U.S. applications, above input ratings (BTUH) are up to 2,000 feet, derate 4% per 1,0000 feet for elevations above 2,000 feet above sea level.
(c)
Based on U.S. government standard tests
(d)
9 Speed constant torque ECM Blower Motor.
(e)
Refer to the Installer's Guide.
(f)
The above wiring specifications are in accordance with National Electric Code, however, installations must comply with local codes.
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