Sunpak heaters (except TSR) require 24 VAC from a transformer that must be located outside of the heater. The control system is a simple on/off control that can be actuated with either a switch or a timer (supplied by installer). The electronic ignition and flame sensing requires continuous power while the heater is operating.
A 24 VAC Transformer with a minimum rating of 20 VA is required for each heater. Transformer should be class 2 with CSA or UL listing.
Sunpak ® heaters utilize a spark ignition and electronic flame safety control. The pilot is only ON while the heater is operating. If the flame safety sensor fails to sense flame at the pilot, the heater will shut down and lockout. This may happen due to low gas pressure or a gusty wind. To restart the heater, first set the switch to OFF before turning the heater ON.
Although these heaters are designed for outdoor installation and use, it is important that switches, transformers or other operating controls be protected from the weather.
These instructions are intended for qualified personnel, specifically trained and experienced in the installation of this type of equipment and related system components. Some states or provinces require installation and service personnel to be licensed. If your state or province is such, be sure your contractor bears the appropriate license. Persons not qualified shall not attempt to fix this equipment nor attempt repairs.
Improper installation, adjustment, alteration, service or maintenance may create a hazard resulting in asphyxiation, explosion or fire, or damage to the equipment.
Installation must be in accordance with local codes, or in the absence of local codes, with the latest edition of the National Fuel Gas Code, ANSI Z224 and National Electrical Code ANSI/NFPA 70, and for Canada, the latest edition of CAN/CGA-B149.1 and B149.2 and Canadian Electrical Code, CSA C22.1 Part 1 and Part 2.
Each heater must be installed such that the following “Minimum Clearance to Combustible Materials’ are maintained. Combustible materials include wood, compressed paper, plant fibers, plastic, Plexiglas® or other materials capable of being ignited and burned. Such materials shall be considered combustible even though flame-proofed, fire retardant treated or plastered. Additional clearance may be required for glass, painted surfaces, vinyl siding or other materials which may be damaged by radiant or convection heat.
Adequate space around each heater is required even when the materials surrounding the heater are non- combustible to provide adequate combustion air and ventilation of exhaust gases. Heaters should never be located in a ceiling recess or soffit.
The stated clearance to combustible materials represents a surface temperature of 90°F (32°C) above room temperature. Building materials with a low heat tolerance (such as plastic, vinyl siding, canvas, tri-ply, etc.) may be subject to degradation at lower temperatures. It is the installer’s responsibility to assure that adjacent materials are not subject to degradation. In locations used for storage of combustible materials, signs shall be posted to specify the maximum permissible stacking height to maintain required clearances from the heater to combustible materials.
Model | Input Btuh | Side In | Rear In | Ceiling In | Below In | Mtg Angle |
---|---|---|---|---|---|---|
S25 | 25,000 | 24″ | 12″ | 9″ | 48″ | Horizontal |
S34 | 34,000 | 24″ | 17″ | 13″ | 48″ | Horizontal |
S25* | 25,000 | 24″ | 8″ | 14″ | 48″ | 30° Max |
S34 | 34,000 | 24″ | 8″ | 18″ | 48″ | 30° Max |
Above clearances apply to Natural and Propane.
*Model S25 for propane gas for use in horizontal position only.
Heaters mounted between 8-9 ft from the floor seem to hit the “sweet spot”. 7ft is considered the minimum. Anything below this becomes a safety issue and will most likely be too intense to stand under. Heaters mounted over 10ft are less effective.
SHORT ANSWER: 8 ft 5 in.
We recommend for safety reasons that no patio heater should be installed below 7ft from the floor. Working backwards and taking into account the clearance requirements. The following guide can be used.
S25 in horizontal position (pointed straight down) requires 8’5″ floor to ceiling distance.
S25 at 30° angle requires 8’10” floor to ceiling distance
S34 in horizontal position requires 9′ floor to ceiling distance
S34 at 30° angle requires 9’5″ floor to ceiling distance
Mounting the heater at a 30° angle increases the top clearance.
A minimum of 6″ top clearance should be maintained. Adequate space around each heater is required even when the materials surrounding the heater are non- combustible to provide adequate combustion air and ventilation of exhaust gases. Heaters should never be located in a ceiling recess or soffit.
There is chance that the exhaust gases might damage overhead awnings.
Building materials with a low heat tolerance (such as plastic, vinyl siding, canvas, tri-ply, etc.) may be subject to degradation at lower temperatures.
There is no factory heat shield that can be ordered.
24″ clearance must be maintained between units.
The gas inlet supply pressure and manifold pressures required for each heater are listed below. For gas supply line pressures in excess of 1⁄2 PSI, consult with your gas service provider or the factory.
Gas Inlet Pressure | Nat Gas | Propane |
---|---|---|
Maximum Pressure | 1/2 PSI | 1/2 PSI |
Minimum Pressure | 6″ W.C. | 11″ W.C. |
Manifold Pressure | 5″ W.C. | 10″ W.C. |
It is critical that the gas piping system be adequately sized for all the gas appliances it serves.
Heaters shall be mounted in a fixed position independent of gas and electrical supply line. Hangers and brackets shall be of noncombustible material. Heaters subject to vibration shall be provided with vibration isolating hangers. Suitable materials for hanging infrared heaters are steel pipe, steel channel, or fabricated hangers of at least 16-gauge material. Hanger and brackets must be secured with adequate anchor to a secure structure using good building practices. Additional bracing to protect against seismic forces may be required in seismically active areas. Never mount heaters to a moving object such as a trailer, motor home, boat, etc.
It is required that areas above the heater be properly vented to allow for necessary combustion air and removal of combustion gases. Heaters shall be provided with natural or mechanical means to supply and exhaust at least 4 cfm per 1,000 BTU per hour of heater input. Exhaust openings for removing the flue products shall be above the level of the heaters. Heater ventilation must comply with state and local codes. Never use heater in a fully enclosed area.
Fire Sprinklers must be located at an appropriate distance from each heater to avoid accidental activation of the sprinkler. Ethylene glycol or propylene glycol must never be used in fire sprinkler systems where heaters are present as these substances may become flammable when heated. A fire sprinkler professional must be consulted when heaters are installed where fire sprinklers are present to insure that heaters and the fire sprinkler system are properly integrated. Specific guidelines can be found in NFPA 13 regarding design and specifications for Fire Sprinkler Systems near heaters.