ACC SMTD 1000 Spa Control 5.5 kW Flow-Thru Heater | Model BUNDLE-K20

Reliable, convertible spa control system with powerful 5.5 kW heating performance and KP-2005 topside keypad.

Product Overview

The ACC SMTD 1000 Spa Control BUNDLE-K20 delivers dependable and flexible control for a variety of spa configurations. Designed by Applied Computer Controls (ACC), this system manages multiple components with precision, including pumps, lights, ozone, and blower options.

It integrates a 5.5 kW flow-through heater, a calibrated pressure switch, and a heavy-duty 2-pole contactor for robust heating control. The system is fully convertible between 115 V and 230 V, making it ideal for both residential and professional installations.

Key Features

• Dual-voltage operation (115 V / 230 V)

• Integrated 5.5 kW flow-through heater

• Controls a 2-speed primary pump

• Operates a blower or secondary pump

• 12 V main and auxiliary lighting support

• Ozonator control included

• Pressure switch activated for safety

• KP-2005 topside keypad and cord set included

• Compact design for versatile installation

Technical Specifications

	ACC Manual
	ACC Configuration Guide
	Andi’s Top Tip – Check the voltage that you are using on your hot tub as there is some configuration that is needed for some of the ACC models. What you don’t want to do is have a Spa Pack set to 115V and supply it 230V or vice versa!

Uses

• Ideal for new spa installations or system retrofits

• Provides precise temperature control and efficient heating

• Suitable for multi-pump configurations

• Designed for professional and residential use

Benefits

• Reliable performance under continuous use

• Fully convertible voltage for flexible setups

• Plug-and-play compatibility for fast installation

• Comprehensive safety protection with pressure switch and hi-limit features

• User-friendly interface via KP-2005 control panel

Summary

The ACC SMTD 1000 Spa Control BUNDLE-K20 provides complete control and heating capability in one professional-grade package. With dual-voltage flexibility, advanced safety features, and the included KP-2005 topside keypad, it delivers the quality, efficiency, and reliability expected from Applied Computer Controls.

Alternate Part Numbers

• K-20
• K20
• K20BUNDLE
• ACCBUNDLE

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Hot Tub Wiring – The Electrical Block

Depending on the pack that you have, the main electrical block will look a little different. Below are two examples. The one of the left is my favourite pack from the USA from manufacturer ACC and on the right, there is an example from Balboa. Please note, if you are in the USA, then you will be using your split system to power the Spa Pack with 230V – 110V is not going to work for you if you have build a tub from brick or concrete, invariably they will be too large and too much water volume for 1.4KW of heat which is the maximum you can get on a 110V supply.

Hot Tub Wiring – Configuring an ACC Spa Pack

These instructions on wiring and installation are provided as a guideline to assist you. Some experience of electrical wiring and do-it-yourself is required to install the light. If at any time you are unsure of how to proceed, you must consult a qualified electrician.

Voltage

The parts are designed around a 4-wire 240V system. We do not supply parts in our configurations for 110V systems as they tend to be underpowered.

Therefore, you need to make sure you configure your system for 240V.

The system is 240V, 41A @ 60HZ

Please use #6 AWG Copper Conductors

Connecting Power

Neutral in the middle.

Line 1 to the left.

Line 2 to the right.

Should look something like this when connected.

As we are using 240V you also need to move two cables over. The Blue Cable (which is the pump) and the Red & White Stripe Cable (which is the blower) need to move from the neutral connector, over to the Line 2 as shown in the photograph below. (Solid White cable stays where it is)

When you have moved the cables, it should look something like this.

Pump Wiring

The pump cables that are supplied with the ACC Smart Touch have the following colours.

Black Wire is the High Speed.

Red Wire is the Low Speed

Green goes to Green on the Pump

White goes to White on the Pump

Pin Diagrams

Who are ACC / About ACC the Company?

ACC, which stands for Applied Computer Controls, is a well-known manufacturer of spa control systems. With decades of experience in the industry, ACC has established a reputation for producing high-quality and reliable control systems for hot tubs and spas.

ACC's spa control systems are designed to provide precise control over various functions and features of a hot tub. These systems typically include a control panel, circuit board, and associated components that work together to manage the operation of the spa.

One of the key advantages of ACC spa control systems is their advanced technology and user-friendly interfaces. The control panels are often equipped with LCD screens, intuitive menus, and easy-to-navigate controls, allowing spa owners to adjust temperature settings, control water flow, activate jets, and manage other functions effortlessly.

ACC places a strong emphasis on safety and energy efficiency. Their control systems often incorporate safety features such as temperature limits, high-limit sensors, and fault detection mechanisms to protect users and the spa itself. Additionally, ACC control systems are designed to optimize energy usage, helping to reduce operating costs and minimize environmental impact.

What sets ACC apart from other manufacturers is their commitment to providing excellent customer support and technical assistance. They have a knowledgeable team of professionals who can assist spa owners with installation, troubleshooting, and any questions or concerns they may have regarding their control systems.

In addition to their control systems, ACC may also offer a range of optional accessories and add-ons to enhance the spa experience. These may include wireless remote controls, smartphone apps for remote operation, and additional features like programmable filtration cycles, mood lighting controls, or audio system integration.

Overall, ACC is a trusted and reputable manufacturer in the spa industry, known for producing high-quality spa control systems that prioritize user comfort, safety, and energy efficiency. Whether you are a hot tub owner or a spa professional, choosing an ACC control system can provide you with the reliability and functionality you need to enjoy a relaxing and customized spa experience.