WaterBoost - Grand 3000L Esybox MAX 60-120T 2703G910

Name: WaterBoost - Grand 3000L Esybox MAX 60-120T 2703G910
Brand: WaterBoost
SKU: waterboostGrand3000Lmax60120T
Price: 7917.6 GBP
Availability: InStock

WaterBoost - Grand 3000L Esybox MAX 60-120T 2703G910 - Image 2

WaterBoost - Grand 3000L Esybox MAX 60-120T 2703G910 - Image 3

WaterBoost - Grand 3000L Esybox MAX 60-120T 2703G910 - Image 4

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Established 1975
Trusted by thousands of customers

A 3,000 litre slimline break tank paired with a twin DAB Esybox MAX 60/120 T booster set on a 2 Esydock MAX base. Half as much stored water again as the Grand 2000, with 6.7 bar and 580 L/min from a 400 V three-phase supply at just 4.4 A per pump.

69 m

Max head / 6.7 bar

580 L/min

Max flow

4.4 A

Per pump

400 V

Three phase

3,000 litres in a single 960 mm moulding — 50% more storage than the Grand 2000 for 110 mm more width.
4.4 A per pump against 12.5 A on the single-phase equivalent — a much lighter load on the board.
69 m constant head held flat to 200 L/min — and 240 L/min still available at a full 6 bar.
Duty/standby plus duty-assist — the second pump joins automatically when demand calls for it, and duty rotates so wear is shared.
DConnect Wi-Fi built in, with Modbus and BMS interfacing available via the optional esy I/O module.

Part no. 2703G910
Established 1975
UK stock
Fast dispatch

Full Description

More about this product

Full Description

Overview

The WaterBoost Grand 3000 Esybox MAX 60/120 T is a complete stored-water boosting system: a 3,000 litre Enduramaxx slimline tank feeding a twin DAB Esybox MAX 60/120 T booster set mounted on a 2 Esydock MAX base.

Stored water is what makes the system work. Rather than drawing straight from a main that may only manage 20–30 litres a minute, the property draws from a three-tonne reservoir that refills quietly in the background. Peak demand is met from storage; the incoming main only has to keep pace with average consumption over the day.

Three thousand litres carries 50% more buffer than the Grand 2000 for just 110 mm more width — at 960 mm the tank still slips under the one-metre mark that governs most doorways, side passages and plant room allowances. For most commercial sites this is the practical sweet spot of the range.

This is the three-phase version of the 60/120. The hydraulics are identical to the single-phase 60/120 M — the same 69 m of head, the same 580 L/min ceiling, the same 240 L/min still available at a full 6 bar. What changes is the electrical side: on 400 V three-phase each pump draws 4.4 A rather than 12.5 A. If the site has three-phase available, this is the version to specify.

Why this system

A fraction of the current draw

4.4 A per pump against 12.5 A on single-phase. Easier to accommodate, better balanced across the board, and no supply upgrade needed where three-phase already exists.

Three tonnes of buffer, still sub-metre

960 mm wide keeps the tank within standard access allowances while carrying half as much water again as the Grand 2000.

Full performance, no compromise

6.7 bar and 580 L/min — identical to the single-phase 60/120 M. You lose nothing hydraulically by going three-phase.

Pressure that survives real flow

240 L/min at 6 bar and 420 L/min at 3 bar. Plenty of boosters quote a high head at nearly zero flow; this one holds it under load.

Two pumps, shared duty

Duty rotates between the pair, and the second joins in duty-assist on heavy demand. Either pump can carry the system alone if the other is down.

Connected as standard

DConnect Wi-Fi is built in for remote pressure setting, alarms and consumption history. Modbus and BMS via the optional esy I/O module.

Performance

Published DAB duty points for the 2 Esybox MAX 60/120 T set. Curve tolerance to ISO 9906.

Flow (L/min)	120	200	240	280	320	360	480	580
Head (m)	69	69	61	53	46.5	40.5	21	3.9
Pressure (bar)	6.7	6.7	6.0	5.2	4.6	4.0	2.1	0.4

Reading the curve in practice. Interpolating the published points, the set delivers roughly 240 L/min at 6 bar, 295 L/min at 5 bar, 360 L/min at 4 bar and 420 L/min at 3 bar. The headline 580 L/min occurs at under 4 m of head, so always size against the pressure you actually need at the outlet rather than the maximum flow figure. DAB publish one table for the 60/120 in both M and T forms — the motor supply differs, the hydraulics do not.

Tank specification

Enduramaxx 3,000 L slimline
Nominal capacity	3,000 litres
Dimensions (L × W × H)	2385 × 960 × 1931 mm
Outlet	2″
Lid	455 mm vented
Overflow	Moulded hoods
Material	Polyethylene, UK moulded
Filled weight (approx.)	3,090 kg
Guarantee	10 years

Pump set specification

2 × DAB Esybox MAX 60/120 T
Maximum head	69 m (6.7 bar differential)
Maximum flow	580 L/min (34.8 m³/h)
Constant pressure range	1–12 bar (3 bar factory default)
Power input P1	2 × 2.65 kW (3.5 HP)
Nominal current	2 × 4.4 A
Supply	3 × 380–480 V, 50 Hz
Maximum speed	5,240 rpm
Impellers	3, with steel wear rings
Nominal pressure PN	12 bar
Maximum inlet pressure	5 bar
Connections	2″ G suction & delivery
Protection / insulation	IP X5 / Class F
Fluid / ambient temperature	0–50 °C / 55 °C maximum
Sound pressure	63 dB(A) at 1 m, free field
Set dimensions	811 × 526 × 766 mm
Set weight	76 kg

What’s included & who it suits

What’s included

Enduramaxx 3,000 L slimline tank
455 mm vented, lockable lid
Moulded overflow hoods
2 × DAB Esybox MAX 60/120 T
2 Esydock MAX twin base with stainless manifold
Integral 2 L expansion vessel per pump
Non-return valve on each delivery

Ideal for

Commercial premises with a three-phase supply
Multi-storey blocks and multi-let properties
Guest houses, small hotels and clubhouses
Farms, workshops and light industrial units
Village halls and community buildings
Sites where a 25 A single-phase load isn’t practical

Installation notes

Three-phase supply required
This variant needs a 3 × 380–480 V supply and cannot be run from single phase. If the site does not have three-phase, specify the 60/120 M instead — same hydraulics on 230 V, at 12.5 A per pump. Installation by a qualified electrician in all cases.

Before you specify
DAB list the Esybox MAX certifications (NSF61, WRAS and ACS) as pending approval in their published catalogues — please confirm current WRAS status with us before specifying for a potable installation. WRAS and Byelaw 30 status for the 3,000 L Enduramaxx slimline tank is likewise to be confirmed. All work must comply with the Water Supply (Water Fittings) Regulations 1999 and BS EN 806.

At roughly 3,090 kg full, this tank needs a purpose-laid, engineered base pad — a domestic garage slab is not rated for it. Allow a minimum 1,000 mm access opening to get the tank into position, and check the route in advance.

Frequently asked questions

What’s the difference between the 60/120 T and the 60/120 M?

Only the motor supply. Both give 69 m of head and 580 L/min maximum — DAB publish a single performance table covering both. The T runs on 400 V three-phase at 4.4 A per pump; the M runs on 230 V single-phase at 12.5 A. If you have three-phase, take the T.

Can I run this from a single-phase supply?

No. It needs a genuine 3 × 380–480 V supply. Converters and phase generators are not a substitute here — order the 60/120 M if the site is single-phase only.

Is the Grand 3000 more powerful than the Grand 2000?

Not in flow or pressure — both use the identical twin Esybox MAX 60/120 T set. What you gain is 1,000 litres more stored water, which means a longer run at peak demand before the system depends on the incoming main keeping up.

Can it really deliver 580 litres a minute?

Only at under 4 m of head, which is not a useful working point. Size against pressure: expect around 420 L/min at 3 bar, 360 L/min at 4 bar, 295 L/min at 5 bar and 240 L/min at 6 bar. Those are the numbers to design with.

Will a 960 mm tank fit through my access?

Allow 1,000 mm minimum. That clears most standard double gates, side passages and roller shutters, but measure the tightest point on the route rather than the opening at either end.

How long does the tank take to refill?

That depends entirely on your incoming main. At 20 L/min a full 3,000 litre tank takes around 150 minutes; at 30 L/min, closer to 100. In practice the tank is topping up continuously rather than refilling from empty.

Are the tank and pump set delivered together?

They ship as separate items on the pallet network. Please make sure someone is available to take delivery and that access to the installation position has been checked in advance.

Part no. 2703G910
Established 1975
UK stock
Fast dispatch
10 year tank guarantee

Downloads

data sheet PDF
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Delivery Information

Standard delivery:
Standard delivery is free on most orders. Some items may incur a delivery charge depending on weight, size or value. Any applicable charge will be displayed at checkout.

Deliveries will typically be made between 7am and 6pm, Monday to Friday (excluding public holidays).

Next day delivery:
Next working day delivery is available for a £16.50 + VAT delivery charge.

Orders must be placed before 12 noon to qualify for next working day delivery. Orders placed after 12 noon on Thursday but before noon on Friday will be delivered the following Monday. Orders placed after 12 noon on Friday will be delivered on Tuesday.

Pallet/Large/Difficult items:
Some large, heavy or difficult to transport items may incur an additional delivery charge. Please contact us for a delivery quote before ordering.

Frequently Asked Questions

Quick answers to common questions about the WaterBoost – Grand 3000L Esybox MAX 60-120T 2703G910. For technical specifications, see the product details above; for sizing or installation advice, contact our team. If you have any other questions, we're happy to help.

What is a mains pressure boosting system?

A mains pressure boosting system increases the pressure and flow of water from the incoming mains supply into a property. It typically combines a pump and a storage or expansion tank, drawing water from the mains and delivering it to taps, showers and appliances at a stronger, more consistent pressure. They are used where the incoming mains is too weak to serve modern outlets reliably.

When do I need a mains booster pump?

You normally need a mains booster if static mains pressure is below 1.5 to 2 bar, if showers run weakly when other taps are open, or if combi boilers struggle to deliver hot water. Anglian Pumping recommends checking static pressure at the stop tap before specifying a system, then choosing a model rated for the number of bathrooms and outlets in the property.

What size mains booster do I need for my home?

Sizing depends on the number of bathrooms, the type of fittings and the static mains pressure. As a guide, a 1 to 2 bathroom property with combi boiler or single shower often needs 1.6 to 3 bar boost. A 2 to 3 bathroom property typically needs 3 to 4.5 bar with an integral break tank. Larger homes need a tank-and-pump system such as the DAB Esybox with Esytank or a Powertank set.

What is a water booster pump?

A water booster pump increases the pressure of an existing water supply to give stronger flow at taps, showers and appliances. It can be a small inline pump fitted to the incoming mains, or a larger pump and tank set that draws from a break tank to feed the whole house. Boosters do not create water – they raise the pressure of the water already coming in.

What is the difference between an inline booster and a tank-and-pump booster?

An inline booster connects straight onto the incoming mains and is limited to 12 litres per minute under UK water regulations – examples include the Salamander HomeBoost and WaterBoost WB-Compact. A tank-and-pump booster, such as the Grundfos Home Booster or DAB Esybox with Esytank, draws from a break tank and can deliver much higher flow rates for larger homes with multiple bathrooms.

What is a variable speed booster pump?

A variable speed booster uses an inverter to adjust pump speed in real time to match demand. It maintains constant pressure as outlets open and close, runs more quietly than a fixed-speed pump and typically saves up to 50 per cent of the energy a fixed-speed equivalent would use. The DAB Esybox, DAB Esybox Mini 3 and Grundfos Scala2 are common variable speed examples.