Wilo-Isar MODH1-1

Your advantages

• High operational reliability, thanks to system with one, two or three horizontal multistage CH1-L pumps with stainless steel hydraulics
• Easy installation and maintenance thanks to special, flexibly adjustable connections to manifolds
• Easy commissioning and operation with the Easy Controller
• Drinking water approval (ACS and KTW) for pumps with components made of stainless steel that come into contact with the fluid

Construction

Pressure-boosting system with 1, 2 or 3 non self-priming stainless steel high-pressure multistage centrifugal pumps switched in parallel

Application

• Fully automatic water supply and pressure boosting in inlet mode, either from the public water supply network or from a tank, for domestic, commercial, industrial and municipal applications (e.g. residential, office, administration buildings, hotels, hospitals, trades, industry, water supply companies).
• Pumping drinking water, process water, cooling water or other industrial water, which does not affect the materials used, neither chemically nor mechanically, and does not have any abrasive or long-fibre constituents

Equipment/function

• 1 – 2 or 3 CH1-L pumps per system
• Components that come in contact with the fluid are corrosion-resistant
• Electrogalvanized base frame with height-adjustable vibration absorbers for insulation against structure-borne noise
• Stop valve on every pump on the suction and pressure sides
• Non-return valve, pressure side
• Pressure sensor, on the discharge side
• Pressure gauge optional, on the suction side
• Pressure gauge, discharge side
• Low-water cut-out switchgear, optional
• EC-control with IP54 plastic housing, consisting of an internal power supply unit, microprocessor, analogue and digital input and output modules

Scope of delivery

• factory-mounted, ready for connection pressure-boosting system checked for functionality and impermeability
• Packaging
• Installation and operating instructions

Type key

Technical data

• 3~400 V ± 10 %, 50 Hz; 3~380/440 V ±10 %, 60 Hz mains connection, depending on type also 1~230 V, 50/60 Hz (other versions on request)
• Max. fluid temperature 50 °C (70 °C optional)
• Max. ambient temperature 40 °C
• Operating pressure 10 bar
• Inlet pressure 6 bar
• Nominal connection diameter, on the discharge side R 2"/DN 100
• Nominal connection diameter, on the inlet side R 2"/DN 100
• Protection class IP54
• Fuse protection on mains side A, AC 3 according to motor power and EVU regulations
• Approved fluids (other fluids on request). Approved fluids are generally waters which do not attack the materials used, neither chemically nor mechanically, and do not contain any abrasive or long-fibre constituents.
• Cooling water
• Drinking and process water

Materials

Single pump:

• Impellers, stage chambers and pump housing made of stainless steel 1.4301/1.4404
• Shaft of stainless steel 1.4404
• EPDM gasket (EP851)/FKM (Viton)
• Mechanical seal made of tungsten carbide/carbon
• Bearing of tungsten carbide
• Pump support foot made of aluminium

Description/construction

• Base frame: electrogalvanized and provided with height-adjustable vibration absorbers for comprehensive insulation against structure-borne noise; other versions on request
• Pipework: complete pipework made of stainless steel, suitable for the connection of all piping materials used in building services; the pipework dimensions must correspond to the overall hydraulic performance of the pressure-boosting system
• Pumps: 1-2 or 3 pumps of the CH1-L series 2.., 4.., 6.., 10.. switched in parallel; all pump components coming into contact with fluid are made of 1.4301/1.4404 stainless steel
• Valves: each pump is equipped on the suction and pressure side with a stop valve or with annular shut-off valves and a pressure-side non-return valve
• Diaphragm pressure vessel: 8 l/PN 10 located on the discharge side with a butyl rubber diaphragm, completely safe in accordance with food safety laws; for testing and inspection purposes, with a ball valve, as well as drain and throughflow fitting according to DIN 4807
• Pressure sensor: 4 to 20 mA, on the discharge side for activating the central EC-controller
• Pressure indication: Pressure gauge (ø 63 mm) on the discharge side; additional digital display of the discharge pressure in the alphanumeric display of the EC-controller
• Controller: the system is standard-equipped with an EC-controller