Calmag CALFLUSH Central Heating Flushing Power Flush Mega Flush Unit Including Hoses – Remove Deposits From Your Central Heating System

Calmag CALFLUSH Central Heating Flushing Power Flush Mega Flush Unit Including Hoses – Remove Deposits From Your Central Heating System
Calmag CALFLUSH Central Heating Flushing Power Flush Mega Flush Unit Including Hoses  – Remove Deposits From Your Central Heating System
Calmag CALFLUSH Central Heating Flushing Power Flush Mega Flush Unit Including Hoses – Remove Deposits From Your Central Heating System

£576.00 Inc VAT

£480.00 Ex Vat

Product not in stock
This product has no direct replacement

Calflush logo

New Upgraded Calflush Powerflush unit upgrades include larger tank capacity increased motor efficiency and electrical flow diverter.

The need to clean...

CalFlush is a powerful Power Flushing cleaning system designed to remove deposits in central heating systems. Effective flushing can be achieved with minimal disruption.

Central heating systems can gradually build up a combination of scale sludge and corrosion by products within the boiler pipework and radiators.  This manifests itself as cold spots on raditors failure to pump to the furthest radiators and noise in the boiler.

Central heating systems also need to be flushed prior to filling with preservative in order to remove flux and other deposits before commissioning for the first time (BS7593:1992).

It can often be time consuming or impractical to remove radiators for cleaning out severe blockages.  Even when they are removed the only flushing capability usually available is with cold water from a hose at mains pressures and flows.  This will not loosen or remove sludge which has bonded to the inside of radiators or the remainder of the heating system.

The Calmag CalFlush Flushing System is the culmination of many years experience of the use of Calmag Heating System treatment chemicals with high flow low pressure cleaning sets.

The opening at the top of the tank allows for chemical cleaners such as the CalFlush Powerflush Pack to be added easily. Furthermore flushing quality can be visually monitored by checking the water returning to the tank or drain. When the system is in operation dirty water can be sent to the drain while continually refilling with fresh water.

The Calmag Calflush unit is compact in design for ease of movement. It has also been ergonomically designed with a large diameter handle so that it can be picked up easily when empty.

Calmag Calflush Power Flush - High Flow Flush

Fouled heating systems can be cleaned whilst in normal service with Calmag products which are left in the system to recirculate for a period of a few days. However this requires multiple visits to the site and often frequent draining down and refilling to restore badly fouled systems.

This process can be simplified and shortened by recirculating the cleaning solution at a high
flow through the system while alternating the direction of flow. Thorough cleaning can be completed in a short time with high efficiency and minimal disturbance to the existing heating circuit.

The Calmag CalFlush Flushing System is designed to be connected into the heating circuit as a temporary replacement for the recirculating pump. It can then be used to introduce suitable cleaning products into the recirculating water at high flows but at a pressure that will not cause any damage to boilers or pipework. Flushing quality can be visually monitored by checking the water returning to the tank or drain. While the system is in operation dirty water can be dumped to drain while continually refilling with fresh water.

Chemical addition is simple through the large opening in the top of the tank.
It has also been ergonomically designed with a large diameter handle so that it can picked up and moved with one hand when empty.

Achieving the best results for your Power Flush Unit

Vented Systems: You will need to either cap off or loop together the expansion and cold feed pipes to avoid filling and overflowing the expansion tank.

The F&E pipes may be capped with push fit end caps or a temporary compression fitting gate valve.

Alternatively looping the feed and expansion pipes together will enable them to be flushed during the cleansing process.

NOTE: This will only be effective where the F&E pipes are not close coupled or connected via an airseparator.

The looping connection may be made with using an off cut of the CALFLUSH hose but should incorporate a valve in the loop to close the circuit when flushing individual radiators.

Any capping or looping must be removed after the flushing process.

Site Section: Position the unit in a room with a suitable drain point and a mains water supply. The cold water supply for a washing machine or dish-washing machine is a convenient source to consider. Set both isolation valves to the closed position.

Run the drain hose and overflow hose to a suitable drain. Connect the fill up hose to a suitable fresh water supply and open thesupply valve. You will be able to controlthe water flow from the fresh water connector’s isolator valve.

Fill the CALFLUSH tank with water to a level between the Min and Max marker. The normal precautions during work on any heating system should be taken place a drip tray or waterproof groundsheet underneath the pump and surrounding area.

Typical flow/connection diagram

Typical flow/connection diagram

Domestic water logo

Systems not suited to Power Flushing

The effectiveness of the Power Flush will be determined by the level of control maintained over the flow of water through the system. Poor control of the flow will result in unsatisfactory results. Systems where Mega Flushing will not give satisfactory results are as follows:

Single Pipe Systems: As a single pipe system relies on hot water displacing cold the high flow created by a Power Flush will reduce the flow through the radiators. The flow will also follow the line of least resistance and so in the event of a radiator suffering from a high level of deposits the flow will pass by without affecting the problem.

Gravity Hot Water Systems: If a Power Flush is carried out on a system with a gravity hot water circuit without any method of preventing circulation through the hot water coil the flush will be ineffective.

Twin Entry Radiator Valves: Systems fitted with twin entry radiator valves should have them upgraded to single entry valves before flushing commences; failure to do this will render the flush ineffective.

Primatic Systems or Thermal Stores: Where a system is connected to a Primatic or Thermal Store cylinder the cylinder should be isolated and flushed separately using a manual flushing method.

Microbore and Minibore Pipes: As the CalFlush machine is designed to produce high flow but not high pressure any reduction in pipe size will result in a decreased flow through the system. If the correct procedure is followed when these types of systems are cleaned the results will exceed those achievable by manual techniques.

Anti-gravity Valve and Built-in Circulators: Although systems with a circulator that cannot be removed or fitted with an Anti-gravity Valve can still be flushed it is important to flush only in the direction of normal flow.

Primary Checks

Before commencing any flushing work it is important to establish whether the system is sealed or open vented. If the system is open vented the cold feed and open vent must be capped off. If possible the system should be operated for a short period prior to work being carried out in order to identify any major system problems such as cold spots pumping over noisy circulator or heat exchanger or gassing problems

Connect the flow and return hoses to the system at the selected point.

Across the “tails” to a radiator (having drained and disconnected this radiator) using appropriate 1/2” or 3/4” BSP female adaptors to connect to the valve bodies.
The radiator valves should be closed to isolate the flushing pump from the system until power flushing is commenced.

The above connection method is generally used when power flushing a system with a combination boiler when the system circulator pump is located in the boiler casing and is difficult to access.

Across the flow and return connections at the boiler isolating the boiler itself.

By connecting across the cold feed and expansion pipes where accessible but not adjacent to each other in the same pipe run. Remember to isolate the water supply to the F&E tank prior to fitting

Maintenance of your Power Flush Unit

The Calmag Power Flush System has been designed to give a long service life with minimal maintenance. However a few simple tasks need to be undertaken after every clean or periodically to ensure that the System remains in top condition and continues to deliver outstanding performance.

Post use: After each time the Calmag Power Flush System is used it should be thoroughly cleaned to remove deposits flushed out from the heating circuit that have accumulated in the sludge trap at the front of the cleaning solution tank.

Routine: The connection hoses and mains power flex should be periodically examined for signs of abrasion or wear and replaced if necessary.

Benefits of Cleaning your Central Heating System with a Power Flush Unit

Removes sludge & scale from central heating systems
Stops boiler noise
Complete system clean
High flow low pressure
Saves time on site
Comes complete with accessories

How Does the Calmag Calflush Unit Work?

The Sludge and Flux Remover and Silt Free is added to the whole system (boiler and radiators) to begin the break up of the magnetite and sludge which usually contains a mix of oil dirt and scale. As the Sludge and Flux Remover frees p these deposits the Silt Free acts as a flocculent to keep the particles in suspension until they are flushed out of the system. The Silt Free works by putting a small electrical charge on each particle so they repel each other. The polymer nature of the product also gives the particles additional buoyancy in water so when there is water flow they go into suspension and are easily flushed out. Once deposits of sludge silt sand and mud have
been treated with Silt Free they cannot reform into a solid mass whilst in water.

Cylinder diagram

There is some flocculent already in Sludge & Flux Remover but this was originally designed to work over a longer period before the event of Powerflushing. Due to the rapid cleaning required when Powerflushing the use of 150ml of Silt Free with every litre of Sludge & Flux Remover is essential to make the whole Powerflushing process faster and more thorough. This solution works in hot and cold water. If the boiler is not being changed Powerflush Descaler is used via the primary loop (all thermostatic valves turned down to descale the heat exchanger).

Instructions for use:
A. Connect Powerflushing equipment to system. Leaving all radiators open add 1 litre of Sludge and Flux per 10 rads.
B. After 2 minutes of pumping add approximately 150ml of Silt Free to the reservoir. Proof that our product is fully distributed throughout the system can be demonstrated by turning on the boiler i.e. hot water indicating presence of products doing their work.
C. Use the powerflush machine to change system water and dump sludge residues.
D. Having removed the magnetite sludge from the system turn off the pump and isolate radiators so that the Powerflush Descaler will only go round the primary loop and the heat exchanger. Half a litre is usually sufficient for a badly scaled heat exchanger usually taking up to 30 minutes for completion.

House diagaram

E. pH papers is to test acid content of the water after flushing (these are not included). A pH of 7 or slightly above is fine if the pH is below 7 continue dumping and refilling the system with clean water until the required reading is achieved or use an acid neutraliser.

Note: All these products are ‘water neutralised’ but if time is an issue use an acid neutraliser on the Powerflush Descaler for faster results.

EAN 5060055230413