Grundfos COMFORT 15-14 B TDT - 93093802

Grundfos COMFORT Databooklet

COMFORT TDT is an efficient circulator designed for hot-water recirculation in residential buildings with a dedicated return line. It is compatible with all types of water heater tanks, tankless systems, solar or heat pumps whether or not the system has mixing or tampering valves installed.

The pump features a compact housing and a permanent magnet with an integrated control unit. The spherical rotor, equipped with an impeller, ensures optimal functionality supported by a robust single-bearing ball system. The drinking-water approved brass pump housing guarantees both safety and reliability. COMFORT TDT moreover features a built-in temperature sensor to maintain precise water temperature.

The user-friendly interface features LEDs and pushbuttons on the operating panel. This offers an intuitive way of displaying and setting operating times and control modes and ensures a comfortable and energy-efficient experience for residential use.

The timer control mode enables the pump to operate continuously based on set operating times with the smallest time increment being 30 minutes. In case of power failure, the timer pauses with no power reserve. However, the selected operating times and current time are retained. When power is restored, the pump resumes its last set operating state. If the power outage exceeds 15 minutes, the current time may need to be reset.

The timer and temperature control mode enables the pump to operate based on set operating times and the functionalities of temperature mode, with operating times taking priority. This means that the temperature mode is only active during the specified operating times. This control mode automatically activates the pump when the internal temperature sensor detects that the water temperature drops below a certain level. The control mode automatically adjusts the on and off temperatures based on the maximum temperature measured in the system. The maximum temperature of the system is measured every 12 hours for 15 minutes, enabling dynamic adjustment of the on and off temperatures.

The toolless installer plug results in fast and easy electrical connection.

The automatic self-venting ability and dry-running protection ensure quiet operation and reliability of the pump.

The product features robust startup which reduces the risk of blockages from dirt, magnetite and limescale build-up. In the unlikely case of a blocked pump, the motor attempts to continuously start at the highest possible torque, ensuring startup in tough conditions.

The ceramic shaft and bearings experience minimal wear, resulting in a longer lifespan and a reduced likelihood of noise in the system due to increased bearing clearance from wear.

When the system air detection and venting feature detects air in the system, the circulator pump pulsates to more effectively push air to the closest air removal device.

Grundfos GO also provides the ability to conveniently fault-find the system through the event log and historical trend data for flow, head, estimated media temperature and on-cycle durations.

The product features:

• Q-H performance that is designed for single- and multi-family homes, depending on the required duty point to accommodate heat loss in a specific pipe layout.
• Heat loss reduced by 56 % compared to continuously running pump.
• Low power consumption and silent operation.
• Compliance with pipe manufacturers' flow velocity limits, including DN 15, DN 20 PEX, copper and others.
• Drinking-water approved thanks to the brass pump housing, stainless-steel rotor and composite impeller.
• A design that makes it easy to remove limescale and foreign deposits by removing the pump head, enabling the product to meet unlimited water hardness requirements.
• Dry-running protection to prevent failure if the system runs out of water.
• Multiple installation positions, even with the pump head pointing downwards.
• A pump head designed to fit brass pump housings of old and new pumps of the same design, even from different pump manufacturers (such as Wilo, Vortex, Lowara, DAB and others).
• Easy electrical installation with a detachable COMFORT plug and a double insulation protection design, which eliminates the need for a ground wire.
• Insulating shell included for reduced heat loss.
• Non-return and shut-off valves included in X variant, reducing installation cost.
• An optional venting flange, providing a simple way to vent or drain the system without the need for permanently installing an additional venting valve.
• Optional fittings for pipe connections of different sizes and types.
• Optional non return and shut-off valves are available.

Controls:

• Operation mode include: Timer

Liquid:

• Pumped liquid: Water
• Liquid temperature range: 2 .. 95 °C
• Selected liquid temperature: 60 °C
• Density: 983.2 kg/m³

Technical:

• Speed no: 1
• Rated flow: 0.45 m³/h
• Rated head: 0.9 m
• Maximum head: 14 dm
• TF class: 95
• Approvals: CE,WEEE,RCM,UKCA

Materials:

• Pump housing: Brass
• CuZn39Pb3, MS58
• Impeller: Composite
• PPO-GF20/Stainless steel

Installation:

• Minimum ambient temperature: 0 °C
• Maximum operating pressure: 10 bar
• Pipe connection standard: ISO 228-1
• Type of connection: Rp
• Size of connection: 1/2 inch
• Pressure rating for connection: PN 10
• Port-to-port length: 80 mm

Electrical data:

• Max. power input: 7 W
• Mains frequency: 50 / 60 Hz
• Rated voltage: 1 x 230 V
• Current in speed 3: 0.07 A
• Enclosure class (IEC 34-5): IP44
• Insulation class (IEC 85): F
• Ex-protection standard: ELECT.
• Thermal protection: Impedance protected

Others:

• Net weight: .94 kg
• Gross weight: 1.04 kg
• Shipping volume: 0.003 m³
• Country of origin: DE
• Custom tariff no.: 84137030