Heating systems, as well as system components like the Tigerloop, must be installed and maintained by a qualified technician that is familiar with oil heating systems, equipped with the proper tools and equipment, and licensed by the proper authority were applicable. Installation and maintenance by an unqualified person can result in hazards to that person and others. These hazards may include spillage of fuel oil, fire, severe burns, damage to system components, and other hazards. In short, a Tigerloop, like the other components on a heating system, is not a do-it-yourself item.

2.  Can I run two burners on one Tigerloop?

No.  Each burner needs its own Tigerloop.

Yes. The Tigerloop will not work unless the bypass plug is installed in the pump to set it to "two pipe" operation.

The Tigerloop should have a filter installed.  If an oil filter is used (recommended), it must be installed in the oil line between the tank and the center port of the Tigerloop.  If you install one of the "ULTRA" models, the filter is already included.

OUTSIDE OF THE UNITED STATES:
If you are outside of the United States you need to find your local distributor by going to: http://www.tigerholm.com/EN/Tigerholm_Distributors-heating.htm

HOMEOWNERS:
If you are a homeowner, no technical support is available.  We do not offer technical support to unqualified persons who are unfamiliar with heating systems. Call your service technician.  He is familiar with your system and has the necessary experience, training and skill to service it.  For liability reasons, there is no exception to this policy.

SERVICE TECHNICIANS:
If you are a service technician in the US, you may call us at 1-800-442-1630.  We will validate your status as a service technician and then answer any questions you have.

As for the fuel level in the bowl of the Tigerloop:

1. Original model Tigerloops (old style with only one chamber) can be almost empty to completely filled and it is perfectly normal.
2. Current model Tigerloops (with two chambers, upper and lower): The lower chamber can be almost empty to completely filled and it is perfectly normal.
The upper chamber should not have enough oil in it to cause the upper chamber float to float. If so, the Tigerloop must be replaced.

With all models, the fuel level can change over time, especially after an oil delivery which can introduce air into the dome.

The Tigerloop has no serviceable parts.  It is sealed at the factory and cannot be opened without destroying it.

The Tigerloop can only be cleaned by wiping with a dry cloth.  USE NO CLEANERS OR ALCOHOL which will damage the Tigerloop.

CAUTION AGAINST THE USE OF FUEL ADDITIVES:
Since it would be impractical to identify and test  the many fuel additives that appear on the market,  much less keep abreast of their latest formulas, no testing or evaluation of additives has been done with regard to their use with Tigerloops. Therefore, the decision to use an additive in a system on which a Tigerloop is installed is not recommended and is solely the prerogative of the person responsible for that system, and the consequences of such use rests with them alone. And while it is hoped that the manufacturers of fuel additives have formulated them to be compatible with, and no more harmful to the system than, fuel oil, it is the responsibility of the person choosing to use the additive to insure that such is the case.  Introduction of an additive directly into piping, filters, pumps, Tigerloop, etc. without being first mixed and diluted in the fuel tank may cause serious damage to the system and components.
 

The Tigerloop has a maximum lift of 13 feet.  The maximum run varies according to pipe size and nozzle size.  Refer to this chart for maximum Lift and Run figures:
                                        Tigerloop Run Lift Chart pdf

Overhead lines should be avoided whenever possible as they accumulate air in the overhead sections and then suddenly pass large amounts of air into the burner.  The instruction sheet which comes with the Tigerloop has some suggestions on how to pipe a Tigerloop to feed the air in smaller  more manageable doses through the Tigerloop.

The Tigerloop has a maximum firing rate of 20 GPH (or 40 GPH for the Tigerloop Twin S220-15).  The maximum return oil flow cannot exceed 30 GPH (or 60 GPH for the Tigerloop Twin).