Catalog #72700
Brochure No. 63-72700
©2008 Edelbrock Corporation
Rev. 5/08 - AJ/mc
Page 3 of 4
IMPORTANT WARNING
This Edelbrock heater should never be used without 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.
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.
