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To Test Bottle Heater for Correct Operation:
1. Turn ignition key to the “run” position.
2. Turn the vehicle’s nitrous system toggle switch to the “on” position.
3. Turn the bottle heater toggle switch to the “on” position.
4. A “click” should be heard from the heater’s relay when first activated as long as the thermostats are
below 85º F.
5. Heater should now start to warm up. It may take a few seconds for the heater to heat up to correct
operating temperature.
6. When bottle temperature reaches near 85-90º F, the thermostats will cut off the ground to the relay,
de-activating the heater. When temperature drops below 85º F, the relay will be grounded through
the thermostats, re-activating the heater.
Troubleshooting
Heater Takes a Long Time to Heat Up.
1. Be sure thermostat touches bottle and is positioned between end gap of heater. Heater will
not operate correctly if thermostat comes in contact or is too close to the heater element
itself.
2. Inspect all ground connections. Check for shorts.
Bottle Heater Does Not Get Hot.
1. Ensure that there is power through the relay. Temporarily place black wire from relay to
ground. This will bypass the thermostat and will activate the relay to supply power to the
heater. If this does not activate the heater, check below items. Ensure all electrical
connections are made as shown in diagram.
2. Check for bad inline fuse. Replace with a 25 amp. fuse.
3. Check toggle switch.
4. Check all wires for shorts.
5. Check all ground connections.
6. Check thermostat. When temperatures are below 85° F, there will be continuity on the
thermostat wires. When there is no continuity below 85° F, replace thermostat.
IMPORTANT WARNING
This Edelbrock heater should never be used with the thermostats installed. The thermostats must
always be in contact with the surface of the bottle in order for the thermostats to properly sense the
bottle temperature. The thermostats have a cut-in and cut-out setting at 85º F
+/- 5º F. Failure to follow this important warning will result in the temperature of the bottle to rise to
unsafe temperatures and the pressure within the bottle to rise to levels that could lead the bottle
Pressure Relief Device to rupture, causing the bottle contents to empty.