QVOF SERIES

Oil-Fired Unit Heaters

The Sterling HVAC QVOF Series of oil-fired unit heaters are designed to operate on number 1 & 2 fuel oils. Available in 7 sizes, ranging from 70–560 MBH (.50–4.00 GPH), all units are factory assembled and arrive ready to install.

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Standard Features

70 - 560 MBH
Heavy Duty 18-Gauge Heat Exchanger
Energy Efficient Flame Retention Beckett® Burner
Adjustable Discharge Air Louvers
Fan/Limit Control
Four Point Suspension
CAD Cell Burner Safeguard Control
115/1/60

Specifications

Sterling Oil-Fired Unit Heaters are the vented type intended for space heating and designed for ceiling suspension.

Heaters are equipped with a 3450RPM flame-retention oil burner of the pressure-atomizing type, using high-tension electric ignition. Operation excels that of conventional gun-type burners. Employing Group I or II safety combustion controls and oil pressures not greater than approximately 100 psi, the burner operates with fuels no heavier than
Commercial grade No. 2.

Clearance

Clearances between a unit and combustible construction should be at least 6" at sides, 6" at top and 18" from the smoke pipe in any direction. For installation of draft regulation, allow 18" between unit top and ceiling, 24" from burner.

Literature

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Literature Library

Performance

Performance, Materials and Features for each QVOF SERIES capacity model.

Name	70	105	126	231	312	375	560
MBH Input	70 MBH	105 MBH	126 MBH	231 MBH	312 MBH	375 MBH	560 MBH
MBH Output	56 MBH	84 MBH	100 MBH	184 MBH	250 MBH	300 MBH	450 MBH
Free Air Delivery CFM	1,050 CFM	1,750 CFM	2,000 CFM	3,200 CFM	3,400 CFM	5,000 CFM	6,000 CFM
Motors
Motor HP	1/4	1/4	1/4	1/4	1/2	1/2	1/3
Motor Count	1 Motor(s)	1 Motor(s)	1 Motor(s)	1 Motor(s)	1 Motor(s)	1 Motor(s)	2 Motor(s)
Venting
Flue Size	7"	7"	7"	8"	9"	9"	10"
Fuel
Fuel Type	#1 & #2 Oil	#1 & #2 Oil	#1 & #2 Oil	#1 & #2 Oil	#1 & #2 Oil	#1 & #2 Oil	#1 & #2 Oil

Markets

The QVOF SERIES is quite versitile it can be installed in a variety of applications. Here are a few key ways The QVOF SERIES can make your space more comfortable.

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Oil-Fired Unit Heaters

Standard Features

Specifications