Edelbrock 72700 User Manual

PN 72700

12-Volt 10-lb./15-lb. Nitrous Bottle Heater

Installation Instructions

Please read these instructions carefully before you begin installation.

1. Secure the Edelbrock bottle heater around the bottle using the Velcro straps. Mount the heater
around the bottom section in a manner so that the end gap is at the top of the mounted bottle,
making sure that the electrical connections are free. Do not cover the bottle label.

2. Place thermostat assembly under one of the velcro straps. Position it between the bottl e surface

3. Mount the relay assembly in an area close to the bottle in a location that will be as moisture free as

4. Route the red wire from the bottle heater to the blue wire on the relay.

5. Connect the black wire from the heater to a chassis ground. Remember to leave enough wir e for

6. Connect one(1) wire from the thermostat to the black wire on the relay assembly.

7. Connect the other wire on the thermostat to a good ch assis ground. Remember to leave enough

8. Route the red wire on the relay harness, (that i ncludes the inline fuse) directly to the positive side

9. Mount the bottle heater on-off toggle switch in the passenger compartment. Place it in a

Important Note: Please ensure that the bottle heater is installed snugly with no
ripples. The bottle heater must completely contact the bottle

and the strap, ensuring the thermostat is in full contact with the bottle. This is your bottle
temperature reference signal and it must be installed correctly or damage may occur.

possible. Keep the relay assembly away from high traffic areas.

the relay.

bottle removal and replacement before and after filling.

wire for bottle heater movement during bottle removal and replacement before and after filling.

battery post or starter solenoid post that the battery cable attaches to. This is done to ensure that
the maximum current draw is done through the relay and not the switch. Failure to attach this wire
directly to either of these two locations can result in possible electrical failure. Use appropriate
connector to splice into power wire (minimum 12-gauge wire).

convenient and visible location. Ensure that during the installation, the lighted portion of the switch
is working and easily visible.

Features:

 Durable, Long-Lasting Heating Element
 Velcro® Straps for Easy Installation
 Dual Thermostat Cartridges for Reliability
 All Electrical Hardware Included

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Hard or blunt impacts can damage

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10. Connect terminal #1 from the toggle switch to an “ignition-switched” +12 volt source. We
recommend that you connect this wire to the switched-on power of the vehicle’s nitrous system
arming switch. This ensures that the heater can only be activated when the nitrous system is
armed.

11. Connect terminal #2 from the toggle switch to the white wire on the relay.

12. Connect terminal #3 to a good chassis ground.

Wiring Diagram

Hardware Includes:

Item Qty. Description

1 1 Nitrous Relay Receptacle
2 1 Thermostat Assembly
3 1 Relay, SPDT, with Diode
4 1 Fuse, ATO, 25 Amp
5 2 Crimp-on Splice Connector
6 3 Crimp-on Disconnect Terminal, Female, Blue
7 2 Crimp-on Disconnect Terminal, Female, Red
8 2 Crimp-on Disconnect Terminal, Male, Blue

9 2 Crimp-on Disconnect Terminal, Male, Red
10 2 Crimp-on Ring Terminal, Red
11 1 Crimp-on Ring Terminal, Blue
12 1 Switch, Toggle, Power, Lighted

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