Danfoss 4033 - User Manual

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Summary

Installation Instructions

Product Specification

Details the technical specifications of the 4033 programmer, including power supply, switch ratings, and dimensions.

Installation

Installation Steps and Water Switch Operation

Covers physical installation procedures and describes the water switch's ON, OFF, and TIMED functions.

Installation Finalization

Heating Switch Operation and Final Checks

Explains the heating switch functions and outlines final installation checks and optional wiring accessories.

Wiring

Programmer Wiring Diagram

Illustrates the basic wiring connections for the 4033 programmer unit.

Wiring for 2 x2 Port Valves

Provides a detailed wiring schematic for systems using two 2-port motorised valves.

Wiring Continued

Wiring for 1 x Mid-Position Valve

Presents the wiring diagram for installations with a single mid-position motorised valve.

User Instructions

Your Programmer Overview

Introduces the 4033 programmer's function for controlling hot water and heating independently.

Programming the Unit

Explains how to set the ON/OFF times using the red and blue tappets on the timing dial.

User Instructions Continued

Setting the Clock

Guides users on how to set the correct time on the programmer's 24-hour dial.

Using the Programmer

Heating and Water Switch Functions

Describes the functions of the HEATING and WATER selector switches (TIMED, OFF, ON).

Support and Troubleshooting

Contact Information and Resources

Provides contact details for technical support, website, and ordering large print versions.

The Danfoss 4033 is an electro-mechanical programmer designed for controlling both heating and hot water systems. This device allows users to set specific times for their heating and hot water to switch on and off, offering a degree of control over their home's climate and hot water availability.

Function Description

The 4033 programmer operates as a time switch for heating and hot water, enabling users to schedule their operation. It features a timing dial with four tappets: two red tappets for "ON" switches and two blue tappets for "OFF" switches. These tappets allow for two "ON" times and two "OFF" times per day, providing flexibility in scheduling. The programmer also incorporates two independent selector switches, one for heating and one for hot water, each with three positions: "TIMED," "OFF," and "ON." This independent control allows users to manage their heating and hot water systems separately, adapting to their specific needs throughout the day or year. For instance, heating can be turned off during summer months while hot water remains available, or hot water can be set to "ON" constantly for continuous supply.

Important Technical Specifications

Power Supply: 230 ± 15% Vac, 50/60Hz
Switch Action: 2 x SPDT (Single Pole Double Throw), type 1B
Switch Rating: Max 264 Vac, 50/60Hz, 3(1) A
Timing Accuracy: ± 1 min/month
Enclosure Rating: IP30
Max. Ambient Temperature: 55°C
Dimensions (W, H, D): 102 x 210 x 60 mm
Design Standard: EN 60730-2-7
Construction: Class 1
Control Pollution Situation: Degree 2
Rated Impulse Voltage: 2.5kV
Ball Pressure Test: 75°C

The device is Class 1 construction and must be earthed. It complies with the Electro-Magnetic Compatibility (EMC) Directive (89/336/EEC, 92/31/EEC) and the Low Voltage Directive (LVD) (73/23/EEC, 93/68/EEC).

Usage Features

The 4033 programmer is designed for straightforward operation, allowing users to easily set their desired heating and hot water schedules.

Programming the Unit:
- The timing dial has four tappets: two red for "ON" and two blue for "OFF."
- To set an "ON" time, hold the central black and silver knob and move a red tappet clockwise to the desired switch-on time (e.g., for morning heating). Tappets may be stiff and require firm pushing.
- To set an "OFF" time, move a blue tappet to the desired switch-off time.
- The programmer supports two "ON" and two "OFF" times per day, allowing for morning and afternoon/evening schedules. For example, to have heating and hot water ON from 7 am to 10 am and again from 5 pm to 11 pm, tappets would be set at 7, 10, 17, and 23 (using a 24-hour clock).
Setting the Clock:
- To set the current time, rotate the dial clockwise until the correct time (in 24-hour mode) aligns with the dot labeled "TIME."
- It is important to reset the clock after a power cut and when daylight saving changes occur in Spring and Autumn.
Selector Switches:
- The programmer features two independent selector switches, one for "HEATING" and one for "WATER."
- Each switch has three positions:
  - TIMED: The heating or hot water will switch ON and OFF according to the times set by the tappets on the dial.
  - OFF: The heating or hot water will remain OFF, ignoring the tappet settings. This is useful for turning off heating during warmer months.
  - ON: The heating or hot water will remain ON constantly, overriding the tappet settings. This allows for continuous operation when needed, such as for constant hot water.

Maintenance Features

While the manual primarily focuses on installation and user operation, some aspects relate to maintenance and troubleshooting:

Installation by Qualified Personnel: The product should only be installed by a qualified electrician or competent heating installer, adhering to the current edition of the IEEE wiring regulations. This ensures correct and safe installation, minimizing future issues.
Post-Installation Checks: After installation, it's crucial to check the switching action of the 4033 with a neon screwdriver or test lamp, ensuring all terminals are functioning correctly in "ON," "OFF," and "TIMED" positions for both heating and water.
Dust and Debris Clearance: Before plugging in the programmer module, ensure all dust and debris have been cleared from the area. This prevents potential malfunctions caused by foreign particles.
Troubleshooting: In case of problems, users are advised to contact their local heating engineer or the Danfoss Randall technical department. The manual provides contact details for technical support and a website for further information.
Wiring Centre Compatibility: The ease of installation can be enhanced by using a Danfoss Randall Wiring Centre. If a wiring centre is used, its specific installation instructions should be followed instead of the general wiring diagrams provided in the 4033 manual.

The Danfoss 4033 is a robust and reliable programmer designed to offer essential control over domestic heating and hot water systems, combining straightforward operation with critical safety and performance standards.