Venstar ACC0410 Add-A-Wire Accessory – Simplify Thermostat Upgrades Without Rewiring

The Venstar ACC0410 Add-A-Wire Accessory is a practical solution for enhancing thermostat compatibility in situations where running new wires is challenging. This device allows a five-wire thermostat to operate using only four existing wires, making it ideal for retrofitting older HVAC systems.

Key Features:

• Wire Expansion: Enables five-wire thermostats to function with four wires, and with an additional unit, can extend five wires to operate like seven.

• Ease of Installation: Designed for straightforward installation within HVAC equipment; not intended for outdoor use.

• Compatibility: Suitable for 24-volt HVAC systems; not to be used as R-power or C-common wire.

• Included Components: Comes with a directionally sensitive Diode Y (yellow, green, blue wire splice) and four wire nuts.

• Specifications: Wires from the accessory are 9 inches long; maximum distance using 18-gauge wire is 100 feet.

Applications:

• Thermostat Upgrades: Facilitates the addition of a common wire (C-wire) necessary for many modern thermostats.

• System Repairs: Useful for fixing broken wires or adding cooling functionality to heat-only systems.

Note: Always consult the installation manual and adhere to local electrical codes when installing the ACC0410.