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Heat Disinfect Distribution Loop System (MROZ/Heatsan)

Heat Disinfect Distribution Loop System (MROZ/Heatsan)

AmeriWater’s MROZ Reverse Osmosis can be combined with the Heatsan Loop Heat Disinfection System. When coupled with pre-treatment, this water purification solution provides a complete system for central dialysis (RO is chemically disinfected, Distribution loop is heat disinfected).

Reverse Osmosis

AmeriWater’s MROZ Reverse Osmosis Systems are the best of both; an open frame RO and a cabinet RO. The pump and membranes are mounted on a corrosion resistant, powder coated open frame providing superior serviceability. The controls and hydraulic hardware are mounted in a low profile cabinet with full size door for easy access. Thin film composite membranes provide maximum contaminant rejection while achieving high product flow and low energy use. A microprocessor controller with backlit LCD display shows product and feed water conductivity, product water temperature, operating hours, percent rejection and a variety of operating status messages.

Loop Heat Disinfect

The Heatsan from AmeriWater is an integrated heat disinfection system for the distribution loop with a significant advantage: the ability to adjust operation for each day of the week, heating intervals, holding times and disinfection temperatures. As a result, the Heatsan can save energy and staff time while providing up to 100 gallons of 185°F water for disinfection. Incorporating a PLC controller, the Heatsan is operated by a dual color touch screen displaying alarms, system status, tank level and disinfection temperatures plus a password-protected event log holding up to 12 months of data. The construction is rugged yet space-efficient featuring a stainless steel skid and an insulated stainless steel storage tank with a sloping base for easy drainage.



Reverse Osmosis Features: 

  • 4” x 40” thin film composite membranes
  • High pressure stainless steel membrane housings with quick connects enable fast and efficient membrane replacement.
  • Disinfection is quick and easy with a simple push of the keypad, the MROZ can be disinfected with PAA and rinsed in 2 hours.
  • High efficiency quiet submersible pump with integral motor starter and motor protection keeps system running smoothly and protects the motor from overload
  • Programmable flush for storage tank or direct feed keeps RO fresh between uses
  • Product divert feature diverts water to the drain when the conductivity exceeds the set point for added patient safety

Loop Heat Disinfect Features:

  • Easy step through programming (7 day program)
  • Program syncs dialysis machines with the Heatsan
  • Intelligent monitoring routines, leak detection, and over use
  • Heat disinfect will abort if leak is detected
  • Four levels of password protection
  • Event log holds up to 12 months of data including AAMI standards required end of loop history
  • USB download to Excel
  • Stainless steel skid complete with insulated stainless steel storage tank with sloping base fitted with three heating elements to minimize electrical consumption, level transmitter and temperature monitor
  • Stainless steel recirculation pump, stainless steel solenoid valves
  • The isolation of the RO system is accomplished with three way motorized ball valves that are controlled by the Heatsan


Reverse Osmosis Specifications:

Performance Projected Rejection >96%
Production GPD* (up to) 6,600 8,800 11,000 13,200 15,400 17,600
Production GPM* (up to) 4.6 6.0 7.6 9.0 10.5 12.2
Electrical (requires 2 supplies) Pump 3 Φ
(Specify voltage)
208V 5.5 amps,
230V 4.7 amps, 460V 2.5 amps
208V 8.8 amps,
230V 7.6 amps,
460V 3.8 amps
208V 12 amps,
230V 10.1 amps,
460V 5.3 amps
Pump HP 1 2 3
Controller 120V, 15 amps, 1 Φ
Membranes Size In. 4 x 40 FRP
Housings Stainless Steel
Quantity 3 4 5 6 7 8
Feed Requirements Max Free Chlorine <0.1
Temp. Range 41°F - 90°F, Ideal 77°F
Operating pH Range 6-9
Pre-Filtration Required 1 Micron
Pressure Feed PSIG 50 - 90
Max. Fouling Index SDI <3
Connections In. (in/out/drain) 1 / ¾ / 1
Dimensions In. (W x D x H) 26 x 30 x 66 26 x 46 x 66
Weight (Operating / Shipping) 403 / 643 439 / 679 475 / 715 525 / 765 575 / 815 625 / 865
* RO flow rates are based on feed water at 77°F, 50 psi feed pressure, and with a maximum loop backpressure of 50 psi. Contact an AmeriWater representative for additional design guidance if the loop backpressure will exceed 50 psi.

Loop Heat Disinfect Specifications:

Models HS208 HS460 HS575
Electrical 208V, 32 Amps, 3 Ph 460V, 16 Amps, 3 Ph 575V, 13 Amps, 3 Ph
Performance Tank Volume 100 Gallons (380 Liters)
Pump Output Range 5.2 GPM @ 80 PSI
19.3 GPM @ 30 PSI
Designed Max. Water Temperature 203°F
Max. No. of Dialysis Machines Depends on the volume of hot water
required per machine and the rate at which they draw water. Total volume
required not to exceed 95 gallons. Draw rate not to exceed pump
Connections In. Drain
Overflow 1½ Sanitary Tri-clamp Coupling
Fill ½ Sanitary Tri-clamp Coupling
Hot Water Flow 1½ Sanitary Tri-clamp Coupling
Hot Water Return
Dimensions In. (W x D x H) 28 x 35 x 70
Weight Lbs. (Shipping / Operating) 700 / 1,580


  • Entire device conforms to IEC UL standard 61010-1
  • FDA 510K / ISO 13485 Registered Medical Device
  • Health Canada Medical Device License 92268
  • Health Canada Medical Device License 90655