Miura MS Series User manual

Installation Manual
Water Softener MS Series (MS-30U/60U)
Check your local building and sanitation codes for installation compliance. Since Miura MS
series water softener is designed for steam boilers make-up usage, it cannot be allowed
drinking and residential usage. Installation Must Meet All State and Local Plumbing,
Electrical, Building code, Occupational Health & SafetyAct, and Regulations.
1. Installation Location
1) Select a location near the drain.
2) When installing, allow enough clearance for maintanence
and operational space.
2. Plumbing
1) Refer to Figure 2.Attach the bypass valve to the
main valve. The suggested bypass valve and the
valve port diameters are the following:
MS - 30U,60U: 1 inch
2) For the inlet side, install the following: inlet valve,
strainer and pressure gauge. For ease of cleaning
the strainer, place it after the inlet valve.
3) If the raw water pressure is lower than the
required pressure range, use booster pump. If
higher than the pressure range, use pressure
reducing valve.
MS - 30U: 22 - 71 psi
MS - 60U: 26 - 71 psi
4) For the outlet side, install the following: outlet
valve and water sampling port. If there is a
possibility of hot water (above 104°F) backflow,
such as during condensate recovery, install check
valve also.
Warning
To prevent injury, the resin tank must
be installed on a foundation with
sufficient level surface so the tank does
not ti
p
over.
Figure 1
MIURA MANUFACTURING AMERICA Co., LTD.
MIURA NORTH AMERICA INC.
Raw water
piping
Tee
Bushing
(Included)
Drainage hose
(Included)
Strainer
(Included) Check valve
Bushing
(Included)
Valve
Treated water
piping
Overflow hose
(Included)
Pressure gauge
(Included)
Tee
Valve
(Included)
NPT-PT Adapter
(Included)
Inlet valve

5) Insert the drain hose (inner diameter of ø12mm
the longer one) to the drain port of control valve
and use the hose clamp to hold it in place (Figure
2).
6) Attach the brine line tube (white 3/8 inch) to the
control valve and the brine line valve using push fit
joint(Figures 2 & 3).
[Note] To remove tube after installation,
Compresspush.
7) Attach the overflow hose (inner diameter of ø12
mm, the shorter one) to the adapter on the brine
tank wall, then use the hose clamp to hold it in
place
8) All drain lines must be atmospheric.
3. Filling of Resin Tank
Water softeners require on-site resin filling of the tank. Place the resin tank at its installation location
and follow the necessary steps below.
1) Check that the inside of resin tank is empty and clean.
2) Insert the center pipe in the resin tank. To prevent resin and gravel from entering the center pipe, plug the
pipe at the top. (Figure 5)
3) Be certain the top of center pipe is 0 – 3/8 inch (0 - 10 mm) below the top of the resin tank still remains
(Figure 7).
[Note] Redo this process if the center pipe is positioned higher than the opening. When the control
valve is applied the silica and resin may enter the water feed pipe if the center pipe exceeds
requirement.
Warning
Negative pressure buildup in the drain pipe
can cause the resin tank to deform and break.
Make sure that water is released not more
than 3 feet below the tank. Also, the
back-pressure causes the regeneration error.
Check that hoses are not deformed and their
diameters have not shrunk.
WARNING
Inlet and outlet pipes must be installed such
that negative pressure does not build up in the
pipe. Negative pressure can cause the resin
tank to deform and break. If the resin tank
elevation is higher than the water supply
source and the feed water tank, re-direct the
water to another tank first and supply a
booster
pump
.
Figure 2. Control valve assembly
Drain hose ø12mm x ø16mm
(included)
Hose clamp
Bypass valve
Adapter clip
Tapping screw
Push fit joint
Drain port
Overflow hose
Hose clamp
Brine valve
Brine line tube
(3/8 inch)
Figure 3. Brine tank
Brine tube (included)
Overflow hose
Hose clamp
Brine valve
Brine line tube
(3/8 inch)
Come from
control valve

4) Use a funnel to pour gravel into the tank (Figure 6).
[Note] Do not move the center pipe after gravel is poured into the tank.
5) Pour resin into the funnel to fill the tank with the resin. If the resin does not flow smoothly, use small
amount of water slowly along with the resin to be certain all resin is poured into tank(Figure 6). Gravel
and resin are pre-measured at the factory.
6) Clean the opening for any debris around the thread and sealing surface. Then remove the plug from the
center pipe.
4. Power Supply Connection
1) 120 V AC single pase. Area must have a outlet that allows 24 hour
continuous usage by the device (120 V, 2 W).
2) Attach an earth leakage circuit breaker with the over current
protection to the unit (circuit breaker max: 5 A).
3) Plug the water softener to 120V electrical outlet.
4) The gauge of power supply wiring must be not less than AWG18.
WARNING
•Failure to use specified power supply can
cause fire.
•To prevent shock, attach to the unit to an earth
leakage circuit breaker.
•To prevent fire, use specified gauge size for
the power supply wires.
Figure 5
Resin tank
Center pipe
Plug the center
pipe to prevent
resin and gravel
from entering.
Remove plug
after filling tank.
Resin
Funnel
Water hose
Add water slowly
Figure 6
S811-089-0500
Date of issue: Apr. 6, 2011
Figure 7
0 - 3/8 inch
(0 -10 mm)
Opening
Gravel
Resin