Commercial Gas Water Heaters
www.hotwater.com
AOSCG10500
Revised September 2008
PG 3 OF 4
ROUGH-IN DIMENSIONS
SIDE VIEW OF BTN
Models 120-400
TOP VIEW OF BTN
Clearance to Combustibles Clearance to Non-Combustibles
Model Sides & Rear Top Cover Sides & Rear Top Cover
BTN120 1” 12” 0” 12”
BTN154 1” 12” 0” 12”
BTN180 1” 12” 0” 12”
BTN199 1” 12” 0” 12”
BTN200(A) 1” 12” 0” 12”
BTN250(A) 2” 12” 0” 12”
BTN275(A) 2” 12” 0” 12”
BTN310(A) 2” 12” 0” 12”
BTN366(A) 3” 12” 0” 12”
BTN400(A) 3” 12” 0” 12”
Water Connections in Inches
Inlet Outlet
Models Top Front Back Top Front Back
BTN120 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2
BTN154 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2
BTN180 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2
BTN199 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2
BTN200(A) 1 1/2 1 1/2 2 1 1/2 1 1/2 2
BTN250(A) 1 1/2 1 1/2 2 1 1/2 1 1/2 2
BTN275(A) 1 1/2 1 1/2 2 1 1/2 1 1/2 2
BTN310(A) 1 1/2 1 1/2 2 1 1/2 1 1/2 2
BTN366(A) 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2
BTN400(A) 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2 1 1/2
Gas Pressure Requirements
Natural Gas Propane Gas
Max. Supply Pressure 14” w.c. 14” w.c.
Min. Supply Pressure 5.0” w.c. 11” w.c.
Manifold Pressure 3.5” w.c. 10” w.c.
Electrical Specifi cations
Volts Amps
BTN 120VAC 5.0
202515_AOSCG10500.indd 3202515_AOSCG10500.indd 3 9/26/08 8:44:33 AM9/26/08 8:44:33 AM
