Stuart Pressurisation Unit SPU 135 MIDI

Stuart

Stuart Pressurisation Unit SPU 135 MIDI

Digital Pressurisation Unit

Suitable for maintaining pressure in large domestic and commercial sealed heating systems, chilled water systems, refrigeration units and industrial cooling systems. STUART SPU MIDI units feature continuously rated brass peripheral pumps, are exceptionally easy to install and commission and are suitable for either floor or wall mounting.

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Key Features

Suitable for sealed systems of up to 300,000 litres

Single (Duty) pump option

3.5 bar cold fill pressure

Resources & Downloads

Stuart SPU MIDI Installation Guide

Stuart SPU MIDI Data Sheet

Technical Specification

Product Code	46721
General
Warranty	2 years
Approvals	UKCE / CA
Features
System capacity	Up to 300,000 litres
Mounting	Wall or floor mount
Pump control system
Intelligent control interface
System fill mode
Dry run protection
Typical noise	60 dB(A)
Materials
Break tank	Polyethylene
Front cover	Acrylic capped ABS
Performance
Maximum fill pressure	3.5 bar / 350 kPa
Maximum flow	17 l/min
Maximum inlet pressure - tank fill valve	7 bar / 700 kPa
Maximum working pressure	6 bar
Ambient air temperature	Min 4 ^oC / Max 40 ^oC
Relative humidity	95 % non-condensing
Min./Max. water temperature	Min 4 ^oC / Max 23 ^oC
Water tank
Usable water capacity	8 litres
Inlet valve and fill rate	Torbeck (side entry) 12 l/min
Fluid category	CAT 5 (type AB air gap with weir)
Connections
Cold water inlet	15 mm compression x 600 mm flexible hose
Cold water outlet	15 mm compression x 600 mm flexible hose
Overflow	G ¾ (19 - 23 mm diameter pipe compression fitting)
Pump
Number of pumps	1
Pump mode	Duty
Pump type	Peripheral
Motor type	Induction, auto-reset thermal trip
Duty rating	Continuous (S1)
Pump head and impeller	Brass
Electrical
Power supply (Vac/Ph/Hz)	230 V a.c. / 1 / 50 Hz
Power consumption - P1	380 Watts
Current - full load	1.7 Amps
Fuse rating	5 Amps
Power cable length	1.5 metres (pre-wired)
Alarm output	Multiple
Physical
Enclosure protection	IPX4
Width	415 mm
Depth	270 mm
Height	504 mm
Weight - including fittings	13.4 Kg
Weight - filled	23.4 Kg
GTIN 13 DIGIT	5050400467212

Compare Models

Description	Maximum fill pressure	Number of pumps
Stuart Pressurisation Unit SPU 135 MIDI	46721	3.5 bar / 350 kPa	1
Stuart Pressurisation Unit SPU 150 MIDI	46723	4.1 bar / 410 kPa	1
Stuart Pressurisation Unit SPU 235 MIDI	46722	3.5 bar / 350 kPa	2
Stuart Pressurisation Unit SPU 250 MIDI	46724	4.1 bar / 410 kPa	2

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