3
DIMENSIONS AND SPECIFICATIONS
SG SERIES BOILERS
Standard Model Includes:
• Zone Control Board with Transformer
• Stainless Steel Burners
• Combination Gas Valve
• Dual Safety High-Limit Aquastat
• Temperature / Pressure Gauge
• A.S.M.E. Pressure Relief Valve
• Drain Valve
• Draft Hood
• Blocked Vent Safety Switch
• Flame Roll-out Safety Switch
• Automatic Vent Damper
“PS” Packaged Models Include
Standard Model Parts plus:
• Circulating Pump
• Custom Cast Iron Pump Adapter
• Expansion Tank
• Air Purger
• Combination Fill / Regulator Valve
• Automatic Air Vent
Options:
• Natural Gas add suffix "N" - Propane models add suffix “P”
• Electronic Ignition add suffix “E” - Hot Surface Ignition add suffix “HS”
• High/Low fire add suffix “M” - Consult Factory for Availability
• Add 45 pounds weight (20 kg) for packaged boilers - add suffix “PS”
INPUT* OUTPUT** DIM A DIM B DIM C DIM D DIM E
GAS
CONN. F
SHIPPING
WEIGHT
MODEL
NUMBER
MBH kW MBH kW in cm in cm in cm in cm in cm NPT lb kg
SG135 135 39.6 112 32.8 14.7 37.3 9.5 24.1 6.0 15.2 45.3 115 4.5 13.9 0.50” 191 87
SG180 180 52.8 150 44.0 17.7 45.0 9.5 24.1 6.0 15.2 45.3 115 4.5 13.9 0.50” 222 101
SG225 225 65.9 188 55.1 20.7 52.6 9.5 24.1 7.0 17.8 46.5 118 6.5 16.5 0.75” 253 115
SG270 270 79.1 225 65.9 23.7 60.2 9.5 24.1 8.0 20.3 47.6 121 7.5 19.0 0.75” 284 129
llow 24” (609 mm) minimum in front for servicing.
Minimum clearances to combustible material: Top 24” (610 mm), Sides 2" (51 mm), Rear 2" (51 mm), Flue 6" (153 mm)
PPROVED FOR COMBUSTIBLE FLOORS & CLOSET INSTALLATION.
The Super Hot product improvement program may result in changes to the design and / or specifications being made without notice.
* For altitudes above 2,000 feet, refer to Section 3.6 to determine the appropriate Input derate or contact the factory.
** Output based on boilers equipped with electronic ignition.