GARAGE/RESIDENTIAL Infrared Radiant Gas Heaters by Space-Ray

Infrared Radiant Heating for Garage / Residential Applications

Cold Blocker Series

Four different input sizes from 20,000 to 50,000 Btu/hr

Single stage or two stage modulating input

Natural or propane gas

U-tube design for uniform energy distribution

Compact size for easy installation from 6' to 20' above floor.

3" O.D. calorized aluminized steel emitter tube for long life and high radiant efficiency
5-year limited warranty on the emitter tube
Smooth cast iron "U" bend

Vacuum System

Products of combustion are pulled through the combustion chamber for increased radiant efficiency and greater safety
No draft hoods; totally enclosed combustion chamber

Burner System

One-piece cast iron burner
10-year limited warranty on burner
Direct outside air for combustion
4" O.D. combustion air intake and vent
Direct spark ignition system with step opening gas valve and 100% Gas Shut-Off Safety Control (pre-purge)
Monitoring lights for visual diagnosis of maintenance needs
36" Stainless Steel Flexible gas connector included with control box

Reflector System

Highly efficient aluminum reflectors
Reflector ends are enclosed for maximum radiant heat output and minimum convection loss
Suitable for horizontal or angle mount up to 45 degrees

Other

Lower mounting height kit required on heater installations between 6 and 8 feet
Optional deflector kit for reduced clearances to combustible materials
Optional decorative grille kit for drop ceiling applications

see Short Form Specs for more detailed information

MODEL	SINGLE STAGE BTU/HR INPUT	TWO STAGE
MODEL	SINGLE STAGE BTU/HR INPUT	BTU/HR HIGH INPUT	BTU/HR LOW INPUT
CB 20	20,000	20,000	N/A
CB 30	30,000	30,000	N/A
CB 40	40,000	40,000	25,000
CB 50	50,000	50,000	31,500

* Indicate model number based on Btu/hr input (e.g. 50,000Btu/hr), emitter length (e.g. 15 ft.) . Control suffix (e.g. Natural Gas single stage input ) . The unit selection would be CB50-15-N5.

Control Suffix	Type of Gas	Control Option Description
N5/ L5	Natural / Propane	Single Stage Gas Valve- Single Stage Input
N7 / L7	Natural / Propane	Two Stage Gas Valve- Modulating Input – High/Low Fire

MODEL	INPUT	MINIMUM MOUNTING HEIGHT	TOTAL TUBE LENGTH	OVERALL DIMENSION	SHIPPING WEIGHT Lbs.**
MODEL	BTU/HR	MINIMUM MOUNTING HEIGHT	TOTAL TUBE LENGTH	OVERALL DIMENSION	SHIPPING WEIGHT Lbs.**
CB20	20,000	8'	15'	9' 3"	88
CB30	30,000	8'	15'	9' 3"	88
CB40	40,000	8'	15'	9' 3"	88
CB50	50,000	8'	15'	9' 3"	88
** Hanging weight is 80% of shipping weight

Supply Requirements

Clearance Information

NOTE: The clearances specified above must be maintained to combustibles and other materials that may be damaged by temperatures 90ºF above ambient temperature. Clearances to combustibles are posted on the reflector near the control end of the heater. In locations used for storage of combustible materials where they may be stacked below the heater, NFPA 54 requires that the installer must post signs that will "specify the maximum permissible stacking height to maintain the required clearances from the heater to combustibles".