WaterBoost - Grand 3000L Esybox MAX 45-120M 2703G710

Name: WaterBoost - Grand 3000L Esybox MAX 45-120M 2703G710
Brand: WaterBoost
SKU: waterboostGrand3000Lmax45120M
Price: 7158 GBP
Availability: InStock

WaterBoost - Grand 3000L Esybox MAX 45-120M 2703G710 - Image 2

WaterBoost - Grand 3000L Esybox MAX 45-120M 2703G710 - Image 3

WaterBoost - Grand 3000L Esybox MAX 45-120M 2703G710 - 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 45/120 M booster set on a 2 Esydock MAX base. Half as much stored water again as the Grand 2000, still under a metre wide, and running from an ordinary 230 V single-phase supply — no three-phase provision required.

58 m

Max head / 5.7 bar

480 L/min

Max flow

960 mm

Tank width

230 V

Single phase

3,000 litres in a single 960 mm moulding — 50% more storage than the Grand 2000 for 110 mm more width.
58 m constant head held flat to 160 L/min — steady pressure right across normal simultaneous demand.
9.4 A per pump against 12.5 A on the 60/120 M — a far easier load for an existing supply to carry.
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. 2703G710
Established 1975
UK stock
Fast dispatch

Full Description

More about this product

Full Description

Overview

The WaterBoost Grand 3000 Esybox MAX 45/120 M is a complete stored-water boosting system: a 3,000 litre Enduramaxx slimline tank feeding a twin DAB Esybox MAX 45/120 M 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.

The 3000 is the sweet spot of the Grand range. It carries 50% more water than the Grand 2000 for just 110 mm more width — at 960 mm it still slips under the one-metre mark that governs most doorways, side passages and plant room allowances. If the 2000 leaves you tight on buffer during a busy morning, this is the step to make before you start thinking about a second tank.

The pump set is unchanged from the Grand 2000: a twin 45/120 M running on an ordinary 230 V single-phase supply at 9.4 A per pump. That is a third less current than the 60/120 M draws, which frequently decides whether a booster set can go in without upgrading the incoming supply or the consumer unit. You give up some pressure ceiling — 5.7 bar rather than 6.7 bar — for a system that far more properties can actually accommodate.

Why this system

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.

Single-phase, and easier on the supply

1 × 208–240 V with 9.4 A per pump. No three-phase provision, no transformer, and a combined load most existing supplies can carry.

Pressure that holds under load

58 m stays flat all the way to 160 L/min, so several outlets can run at once without the shower dropping off.

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.

Genuinely quiet

63 dB(A) at one metre from water-cooled permanent-magnet motors — suitable for a plant room next to occupied spaces.

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 45/120 M set. Curve tolerance to ISO 9906.

Flow (L/min)	80	160	200	240	280	320	360	480
Head (m)	58	58	52	45	38.5	32.3	26	7
Pressure (bar)	5.7	5.7	5.1	4.4	3.8	3.2	2.5	0.7

Reading the curve in practice. Interpolating the published points, the set delivers roughly 330 L/min at 3 bar, 265 L/min at 4 bar and 205 L/min at 5 bar. The headline 480 L/min occurs at only 7 m of head, so always size against the pressure you actually need at the outlet rather than the maximum flow figure. Pump performance is identical to the Grand 2000 — the difference between the two models is stored volume, not flow.

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 45/120 M
Maximum head	58 m (5.7 bar differential)
Maximum flow	480 L/min (28.8 m³/h)
Constant pressure range	1–12 bar (3 bar factory default)
Power input P1	2 × 1.97 kW
Nominal current	2 × 9.4 A
Supply	1 × 208–240 V, 50/60 Hz
Nominal pressure PN	12 bar
Maximum inlet pressure	5 bar
Connections	2″ suction & delivery
Protection / insulation	IP X5 / Class F
Fluid / ambient temperature	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
DAB part codes	60217358 × 2, 60198332 (dock)

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 45/120 M
2 Esydock MAX twin base with stainless manifold
Integral 2 L expansion vessel per pump
Non-return valve on each delivery

Ideal for

Small apartment blocks and multi-let properties
Guest houses, small hotels and B&Bs
Village halls, clubhouses and community buildings
Farms, equestrian yards and light commercial sites
Properties on a poor or restricted mains supply
Any larger site with no three-phase supply

Installation notes

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. The electrical supply must be sized for the combined 2 × 9.4 A load and installed by a qualified electrician.

Frequently asked questions

Is the Grand 3000 more powerful than the Grand 2000?

No — both use the identical twin Esybox MAX 45/120 M set, so flow and pressure are exactly the same. 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.

Should I choose the 45/120 M or the 60/120 M?

The 60/120 M gives more pressure — 6.7 bar against 5.7 bar — and slightly more flow at the top end. The 45/120 M draws 9.4 A per pump instead of 12.5 A. If the building is low-rise and 5.7 bar covers the static lift plus pipe losses plus outlet pressure, the 45/120 M is the easier and cheaper installation. If you are lifting to several storeys or feeding long runs, step up to the 60/120 M.

Do I need a three-phase supply?

No. This variant is single-phase throughout, 1 × 208–240 V. If you do have three-phase available, the 45/120 T version draws only 3.4 A per pump — ask us about it.

Can it really deliver 480 litres a minute?

Only at 7 m of head, which is not a useful working point for most installations. Size against pressure: expect around 330 L/min at 3 bar, 265 L/min at 4 bar and 205 L/min at 5 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. 2703G710
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 45-120M 2703G710. 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.