Sterling SC - Manual (Page 35)

35
SEPARATED COMBUSTION TUBULAR BLOWER
UNIT NUMBER DESCRIPTION
DIGIT T X X X – 1 2 3 4 5 6 7 8 9 10 11 12 13 14 +
ITEM PREFIX UT CA FT FM GT AL GC SV MT MS AS
(Internal Use Only)
Digit #1, 2 - Unit Type [UT] Digit #12 - Motor Type [MT]
SC - Separated Combustion Tubular Blower 1 - Open Drip Proof (Standard)
2 - Totally Enclosed
Digit #3, 4, 5 - Capacity [CA] 3 - Premium Efficiency, Open Drip Proof
100 - 100,000 BTU/HR 4 - Premium Efficiency, Totally Enclosed
125 - 125,000 BTU/HR
150 - 150,000 BTU/HR Digit #13 - Blower Motor Sizes [MS]**
175 - 175,000 BTU/HR A - 1/4 HP w/Contactor P - 1/2 HP w/Magnetic Starter
200 - 200,000 BTU/HR C - 1/2 HP w/Contactor R - 3/4 HP w/Magnetic Starter
250 - 250,000 BTU/HR D - 3/4 HP w/Contactor S - 1 HP w/Magnetic Starter
300 - 300,000 BTU/HR F - 1 HP w/Contactor T - 1-1/2 HP w/Magnetic Starter
350 - 350,000 BTU/HR G - 1-1/2 HP w/Contactor U - 2 HP w/Magnetic Starter
400 - 400,000 BTU/HR H - 2 HP w/Contactor W - 1/4 HP w/Magnetic Starter
J - 1/4 HP 0 - None/Not Applicable
Digit #6 - Furnace Type [FT] L - 1/2 HP
A - Right Side Access **Notes: 1. All 3-phase units [SV = 4, 5, 6, 7] include a contactor as standard.
2. All single phase units [SV = 1, 2, 3] include a contactor for units equipped with
Digit #7 - Heat Exchanger Construction Material [FM] 3/4 HP. motor or higher [MS =D, F, G, H]
1 - Standard (Aluminized) Steel 3. [MS] options J, L only available with [SV] option 1 (115/1/60).
2 - 409 Stainless Steel
Digit #14 - Accessories [AS]
Digit #8 - Gas Type [GT]
N - Natural Gas FACTORY INSTALLED
P - Propane Gas (LP) M8 - Discharge Duct Flange S3 - 409 Stainless Steel Flue Collector
P4 - Terminal Block Wiring S5 - 304L Stainless Steel Burners
Digit #9 - Altitude [AL] P6 - Summer/Winter Switch
S - 0–4,999 ft.
† FIELD INSTALLED (AS-____ ) T - 5,000–11,999 ft.
All Field Installed Accessories are to be entered as a separate line item using Note: Installations over 2,000 ft. require gas input deration in the field.
catalog number which utilizes “AS” as a prefi x. i.e: A7 becomes AS-A7. Refer to unit installation instructions.
A7 - Pressure Regulator 1/2-2 psi M2-2 - Vent Caps (5") (Unit Capacity 100-250) Digit #10 - Direct Spark Gas Control [GC]
M2-3 - Vent Caps (6") (Unit Capacity 300-400) 1 - Single Stage
F1 - 1-Stage T675A Ductstat 2 - Two Stage
F2 - 2-Stage T678A Ductstat P5 - 24V SPST Relay-Specify Purpose 3 - Electronic Modulation w/Room Sensing
4 - Electronic Modulation w/Duct Sensing
G1 - 1-Stage T87K Mercury Free Thermostat X2 - 30 Degree Downturn Nozzle 5 - Electronic Modulation w/Duct Sensing & Room Override Stat
w/Subbase Kit X3 - 60 Degree Downturn Nozzle 6 - Electronic Modulation w/External 4-20 mA Input
G2 - 1-Stage T87K Mercury Free Thermostat X4 - 90 Degree Downturn Nozzle 7 - Electronic Modulation w/External 0-10 VDC Input
w/TG511A Guard Kit X5 - Vertical Louver Kit
G3 - 1-Stage T834N Mercury Free Digit #11 - Supply Voltage [SV]
Thermostat/Fan Switch X7-H5 - Horiz. Combustion Air Inlet Kit, 5 inch 1 - 115/1/60 5 - 230/3/60
G5 - 2-Stage TH5220D Mercury Free (Unit Capacity 100-250) 2 - 208/1/60 6 - 460/3/60
Thermostat w/Subbase X7-H6 - Horiz. Combustion Air Inlet Kit, 6 inch 3 - 230/1/60 7 - 575/3/60
G6 - Locking Thermostat Cover (Unit Capacity 300-400) 4 - 208/3/60 Z - Special
G8 - 1-Stage T6169C Line Voltage Stat X7-V5 - Vert. Combustion Air Inlet Kit, 5 inch Note: Supply Voltages [SV] 2-7 include factory mounted step down transformer.
w/Subbase (Unit Capacity 100-250)
G9 - 1-Stage T822K Mercury Free X7-V6 - Vert. Combustion Air Inlet Kit, 6 inch
Thermostat (Unit Capacity 300-400)