Crown DSC Series User Manual
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DSC Series Manual
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Installation, Operation,
Maintenance and Parts
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, injury or death. Read and understand the installation, operating
and maintenance instructions thoroughly before installing or servicing this equipment.
This heater must be installed and serviced by trained gas installation and service
personnel only. Inspect the heater annually. Failure to comply could result in personal
injury, asphyxiation, death fire and/or property damage.
Storage of gasoline and other flammable vapors and liquids in the vicinity of this or
any other appliance may result in fire or explosion. Do not store or use gasoline or
other flammable vapors and liquids in the vicinity of this or any other appliance. An
LP cylinder not connected for use shall not be stored in the vicinity of this or any other
appliance. Maintain clearance to combustibles at all times.
For outdoor use only. This heater is not approved for use in any indoor residential
application. This includes, but is not limited to, attached garages, solarium, living
quarters, etc. Installation in residential indoor spaces may result in property damage,
asphyxiation, serious injury or death.
DANGER
If you smell gas:
1. Shut off gas to the appliance.
2. Extinguish any flame.
3. If odor continues, keep away from the appliance and immediately call your gas supplier or fire
department.
C R O W N V E R I T Y I N C .
37 Adams Boulevard, Brantford, Ontario, Canada N3S 7V8
tel 519.751.1800 or 888.505.7240 fax 519.751.1802 e-mail info@crownverity.com web www.crownverity.com
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DSC Series
Contents
1.0 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Clearance to Combustibles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Standards, Certifications and Government Regulations . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety Signs and Labels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.0 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Heater Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Recommended Mounting Heights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Gas Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Gas Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Leak Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Ventilation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.0 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Sequence of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4.0 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Periodic Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Service Access Panel Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Troubleshooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Maintenance Log. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
5.0 Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
6.0 Limited Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
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DSC Series
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1.0 Safety • Safety Symbols • Applications
1.0 Safety
WARNING
Improper installation, adjustment, alteration, service or maintenance can cause
property damage, serious injury or death. Read and understand the installation,
operating and maintenance instructions thoroughly before installing or servicing this
equipment. Only trained, qualified gas installation and service personnel may install or
service this equipment.
Safety Symbols
Safety is the most important consideration during installation, operation and maintenance of the infrared
heater. You will see the following symbols and signal words when there is a hazard related to safety or
property damage.
Danger indicates a hazardous situation which, if
DANGER
not avoided, will result in death or serious injury.
Warning indicates a potentially hazardous situation
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WARNING
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CAUTION
NOTICE
which, if not avoided, could result in death or injury.
Caution indicates a potentially hazardous situation
which, if not avoided, could result in minor or
moderate injury.
Notice indicates a potentially hazardous situation
which, if not avoided, could result in property
damage.
Applications
This is not an explosion proof heater. Consult your local fire marshal, insurance carrier and other
authorities for approval of the proposed installation.
Commercial / Industrial
This patio heater is specifically designed to provide heated comfort in an outdoor environment. When
properly integrated into a patio design, the heaters generally increase the comfort levels.
Outdoor Residential
This heater may only be used in outdoor residential applications and is NOT approved for use in any
indoor residential application. This includes, but not limited to, attached garages, living quarters, solarium,
etc. Consult the local fire marshal and/or insurance provider if unsure of your application.
WARNING
Not For Indoor Residential Use. Installation of a infrared heater system in
residential indoor spaces may result in property damage, serious injury or
death. In residential applications this heater may only be used outdoors.
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1.0 Safety • Clearance to Combustibles
DSC Series
Clearance to Combustibles
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WARNING
Placement of explosive objects, flammable objects, liquids and vapors close
to the heater may result in explosion, fire, property damage, serious injury or
death. Do not store, or use, explosive objects, liquids and vapor in the vicinity
of the heater.
Failure to comply with the published clearances to combustibles could result in personal injury, death and/
or property damage.
A critical safety factor to consider before installation is the clearances to combustibles. Clearance to
combustibles is defined as the minimum distance you must have between the infrared surface, or
reflector, and the combustible item. Considerations must also be made for moving objects around the
infrared heater. The following is a partial list of items to maintain clearances from:
Combustible items: Moving Objects:
• Wood • Chemicals • Overhead doors • Hoists
• Paper • Wall or roof insulation • Vehicle lifts • Car wash equipment
• Fabric • Cranes
Hazards:
For maximum safety the building must be evaluated for hazards before installing the heater system.
Examples include, but are not limited to:
• Gas and electrical lines
• Combustible and explosive materials
• Chemical storage areas
• Areas of high chemical fume concentrations
• Provisions for accessibility to the heater
• Adequate clearances around air openings
• Combustion and ventilating air supply
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CAUTION
In locations used for the storage of combustible materials, signs must be posted to specify
the maximum permissible stacking height to maintain the required clearances from the
heater to the combustibles. Signs must either be posted adjacent to the heater thermostats
or in the absence of such thermostats, in a conspicuous location.
Children and adults should be alerted to the hazards for high surface temperatures and should stay away
to avoid burns or clothing ignition.
Young children should be carefully supervised when they are in the same space as the heater.
• Vehicle parking areas
• Vehicles with lifts or cranes
• Storage areas with stacked materials
• Lights
• Sprinkler heads
• Overhead doors and tracks
• Dirty, contaminated environment
Clothing or other flammable materials should not be hung from the heater, or placed on or near the heater.
Any guard or other protective device removed for servicing the heater must be replaced prior to operating
the heater.
Installation and repair should be done by a qualified service person. The heater should be inspected
before use and at least annually by a qualified service person. More frequent cleaning may be required as
necessary. It is imperative that the control compartment, air passage ways and burner of the heater are
kept clean.
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DSC Series
1.0 Safety • Clearance to Combustibles
When installing the infrared heater system, the minimum clearances to combustibles must be maintained.
These distances are shown in Chart 1.1 and on the heater. If you are unsure of the potential hazards,
consult your local fire marshal, fire insurance carrier or other qualified authorities on the installation of gas
fired infrared heaters for approval of the proposed installation.
Chart 1.1 • Clearance to Combustibles in Inches (see Figure 1.1)
Mounting
Model No. BTU/h Voltage
DSC-31 31,000 24 VAC
DSC-34 34,000 24 VAC
Angle* Sides Back Top Below Ends Front
0° 18 N/A 13 48 12 N/A
30° N/A 18 18 40 12 36
0° 18 N/A 13 48 12 N/A
30° N/A 18 18 40 12 36
* Heaters mounted on an angle between 1° to 30° must maintain clearances posted for 0° or 30°;
whichever is greater.
Important! If the heater is mounted beneath a non-combustible surface an 8 in. minimum top clearance
must be maintained from the top of the heater to prevent overheating the controls.
Clearance to combustible distances represent a surface temperature of 90°F (32°C) above ambient
temperature. Ensure that building materials with a low heat tolerance (i.e, awnings, fabrics, plastics,
sprinklers, insulation) are protected against degradation. This may require the heater to be mounted at a
distance in excess of the published clearances to combustibles. Contact the factory or the building
material manufacturer for additional information.
Figure 1.1 • Clearance to Combustibles
Top (to ceiling)
Side
Below
END VIEW - 0° MOUNTING ANGLE
Side
Back
END VIEW - 30° MOUNTING ANGLE
Top
(to ceiling)
Front
30˚
Below
End End
SIDE VIEW
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1.0 Safety • Standards, Certifications and Government Regulations
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DSC Series
Standards, Certifications and Governmental Regulations
The installation of this heater must comply with all applicable local, state and national specifications,
regulations and building codes (contact the local building inspector and/or fire marshal for guidance)
before installing the heater system.
In the absence of local codes, the installation must conform to the latest edition of the National Fuel Code
ANSI Z223.1 (NFPA 54).
Refer to the following standards and codes for application specific guidelines:
Public Garages:
The installation of this heater in public garages must conform with the Standard for Parking Structures,
ANSI/NFPA 88A (latest edition), and must be at least 8 ft. above the floor.
Aircraft Hangars:
The installation of this heater in aircraft hangars must conform with the Standard for Aircraft Hangars,
ANSI/NFPA 409 (latest edition). The heater must be installed at least 10 ft. above the upper wing
surfaces and engine enclosures of the highest aircraft which might be stored in the hangar. In areas
adjoining the aircraft storage area, the heaters must be installed at least 8 ft. above the floor. The heaters
must be located in areas where they will not be subject to damage by aircraft, cranes, moveable
scaffolding or other objects.
High Altitude:
The installation of this heater is approved, without modifications, for elevations up to 2,000 ft. above MSL
(sea level). Contact Crown Verity Inc. for installations above these elevations.
Gas Connection:
WARNING
An approved connector, suitable for the environment of equipment usage, is required. Visible or excessive
swaying, flexing and vibration of the gas connections must be avoided to prevent failure. Neither the gas
pipe nor the connector shall be placed in the flue discharge area or in direct contact with infrared rays. In
no case shall the gas supply support or bear weight of the heater.
To ensure your safety, and to comply with the terms of the warranty, all units must be installed in
accordance with these instructions. Under no circumstance should the gas supply line provide support to
the heater.
The gas supply to the infrared patio heater must be connected and tested in accordance with national,
state, provincial, and local codes along with the guidelines in the manual. In the United States refer to the
latest edition of the ANSI Z223.1 (NFPA 54) Standard; and in Canada, refer to the latest edition of the
CAN/ CGA B149.1 Standard.
Supply gas piping to the unit should conform to the local and national requirements for type and volume of
gas handled, and pressure drop allowed in the line. Avoid pipe sizes smaller than 1/2”.
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DSC Series
1.0 Safety • Standards, Certifications and Government Regulations
Electrical:
The heater, when installed, must be electrically grounded in accordance with the National Electrical Code
ANSI/NFPA 70 (latest edition). Under no circumstances is the electrical supply line to provide any
assistance in the suspension of the heater.
Ventilation:
This heater must be installed in accordance with the requirements set forth in this manual and with the
NFPA 54/ANSI Z223.1 National Fuel Gas Code (latest edition). See ventilation requirements on page 19
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Crown Verity units comply or are certified by one or more of the following organizations or standards:
• CSA International Requirement (CSA 2.37).
• American National Standards Institute (ANSI Z83.26).
• Intertek (ETL)
• Occupational Safety and Health Act (OSHA).
• NFPA 54/ANSI Z223.1 - National Fuel Gas Code.
• NFPA 70/ANSI - National Electrical Code.
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1.0 Safety • Safety Signs and Labels
DSC Series
Safety Signs and Labels
It is important to provide warnings to alert individuals to potential hazards and safety actions. ANSI
Z83.26/CSA 2.37 requires you to post a sign specifying the maximum permissible stacking height to
maintain the required clearances from the heater to the combustibles near the heaters thermostat or in
absence of such thermostats in a conspicuous location.
Safety warning labels must be maintained on the infrared heater. Illustrations of the safety labels, and their
locations, are pictured below. In locations used for the storage of combustible materials, signs must be
posted to specify the maximum permissible stacking height to maintain the required clearances from the
heater to combustibles. Signs must either be posted adjacent to the heater device or in the absence of
such control in a prominent location.
Figure 1.2 • Heater Safety Label Locations
F/N: LL01 - Clearance Safety Tag
(Affix adjacent to heater’s control
device).
F/N: LLPCL004
Clearance to Combustibles Label
Side Panel
SA MPLE
F/N: LLDR009 (NG)
F/N: LLDR010 (LP)
Gas Type Label
4002434
LLDR003
Provide 24 Volts
Rating Label
(inside panel)
End Panel
Logo Label
Wiring Diagram
(inside panel)
Front Panel
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DSC Series
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2.0 Installation • Design
2.0 Installation
WARNING
Read and understand, the installation, operating and maintenance instructions
thoroughly before installing or servicing this equipment.
Only trained, qualified gas installation and service personnel may install or service
this equipment.
Design
Crown Verity Inc. Patio Heaters are designed specifically for comfort heating in an outdoor environment.
Examples of suitable applications include patios, porches, outdoor shopping areas, and outdoor
pathways. When used properly, the heaters will increase the comfort levels of its application. However, the
effectiveness of the heating will depend on many variables, such as air temperature, wind velocity, wind
barriers, mounting heights, and distance between heaters. To ensure a safe, properly designed heating
system, all of these variables should be considered prior to developing a layout for the infrared heaters.
It is important to note that the effectiveness of the heater may be diminished in environments with wind
velocities above 5 MPH. Wind barriers can be extremely effective in maintaining the effectiveness of the
heater and reducing the operational costs. However, if wind barriers are used, they must be designed in
such a way that allows for the necessary fresh air and ventilation for the proper heater operation. In
addition, all clearance to combustibles must be maintained at all times (See Chart 1.1 on page 5).
NOTICE
Radiant heat is capable of damaging or destroying certain materials or items. Do not store material or
items underneath the heater. Always maintain clearance to combustibles.
The infrared patio heaters may be laid out in a number of configurations depending on the structures
constraints of the application, heating requirements, and therefore, the basic recommendations of
installation. The minimum mounting height for all Crown Verity Patio Heaters is 6.5 feet above the finished
floor.
The heater must always be operated in a location that allows uniform air pressure around the heater. If
one part of the heater is located outside of a wind protected zone, the heater may not properly function or
damage to the heater may occur. Consideration should be taken on how the wind will affect the heaters
after installation. IMPORTANT: Fire sprinkler heads must be located at an appropriate distance from the
heater to avoid accidental discharge of the fire suppression system. This distance may exceed the
published clearance to combustibles (see Chart 1.1 on pg. 5). Certain applications will require the use of
high temperature sprinkler heads or relocation of the heaters.
CAUTION
Fire sprinkler systems containing propylene glycol, antifreeze or other potentially flammable substances
shall not be used in conjunction with this heater without careful consideration for and avoidance of
inadvertent discharge hazards. For further information consult NFPA 13. Always observe applicable state
and local codes.
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