• Correct installation of this heater is necessary to ensure
safe and proper operation.
Read and understand thismanual before attempting to
install the heater. Failure to follow all these instructions
could cause serious or fatal injury.
• Heater must be turned off while re-fueling.
• Do not install heater in enclosed areas where com-
bustible fumesmay be present.
• Do not install heaters in engine compartments of gaso-
line powered boats.
• Install the exhaust system so it will maintain aminimum
distance of 50mm (2”) from any flammable or heat sensi-
tivematerial.
• Ensure that the fuel system is intact and thereareno leaks.
• Route the heater exhaust so that exhaust fumes cannot
enter any passenger compartments.
• If running exhaust components through an enclosed
compartment, ensure that it is vented to the outside.
• The use of Espar coolant heaters requires that the
coolant in the system to be heated contain a proper mix-
ture of water and antifreeze to prevent coolant from
freezing or slushing.
• If the coolant becomes slushy or frozen, the heater’s
coolant pump cannot move the coolant causing a block-
age of the circulating system.Once this occurs, pressure
will build up rapidly in the heater and the coolant hose
will either burst or blow off at the connection point to the
heater.
• This situation could cause engine damage and/or per-
sonal injury. Extreme care should be taken to ensure a
proper mixture of water and antifreeze is used in the
coolant system.
• Refer to the enginemanufacturer’s or coolant manufac-
turer’s recommendations for your specific requirements.
WarningTo Installer
Warning - ExplosionHazard
Warning - FireHazard
Warning - AsphyxiationHazard
Warning - SafetyHazardonCoolant Heaters
UsedWith Improper AntifreezeMixtures
3
HeaterWarnings
Introduction
Caution:
During electrical weldingwork on the vehi-
cle disconnect the power to the heater in
order to protect the control unit.
Note:
All measurements contained in thismanual
containmetric and approximate SAE equiva-
lents in brackets eg 25mm (1”).
Direct questions to Espar Heater Systems:
Canada&U.S.A.
1-800-387-4800
This publicationwas correct at the time of print.
However, Espar has a policy of continuous improve-
ment and reserves the right to amend any specifica-
tions without prior notice.
