Shurflo 4902-4212 Installation Manual

Model 4902 Series Pump/Accumulator Combination

INSTALLATION AND OPERATION MANUAL

The most advanced accumulator system available. This fully-automatic potable and raw water system delivers smooth, consistent flow at all ranges of operation, while drawing low current. Designed for high flow marine applications.

To prevent possible serious or fatal injury.

Do not exceed 50 PSI [3.4 bar] working pressure on the tank.

GENERAL SAFETY PRECAUTIONS

• If fuel vapor is detected, never operate the engine or electrical equipment until the source is located and/or properly vented.

MOUNTING

• All tanks should be securely mounted horizontally to a solid foundation with the pre-charge valve “out” for maintenance and

convenience. Pump can be mounted on top of tank or beside it. System should not be mounted vertically or bulkhead on wall.

• The unit should be located in an area that is dry and provides adequate ventilation. If mounted with in an enclosure, a provision to cool

the motor may be necessary.

• System is not rated for below waterline installation. The strainer and pump must be mounted above the outside water line.

• The pump is capable of a 6 ft. [2M] vertical prime.

PLUMBING:

• SHURflo recommends that the pump inlet and outlet ports be plumbed with at least 1 ft. [.3M] of flexible tubing. Inlet tubing

1/2” I.D. min [mm] from the tank to the pump should be rated for vacuum. Standard garden hose is not suitable as inlet tubing will collapse under vacuum, reducing water flow and possibly damaging the pump. The system outlet port should not be connected to rigid (plastic) pipe. Normal oscillation of the system may transmit through rigid plumbing causing noise and

possibly loosen or crack components.

• Avoid any sharp radius in tubing that may kink over time. Route tubing away from heat (exhaust manifolds etc.) and fasten

securely. See your tubing manufacturer for recommendations.

• Always use high quality non-corrosive fittings, valves and hardware to assure long-term reliability.

• The through hull fitting must have a sea-cock valve to shut-off in case of an emergency.

• Properly seal all pipe threads before the strainer to prevent unforeseen leaks, Never use Teflon tape or sealing compounds

on SHURflo fittings. Sealant may enter the pump causing a failure not covered under warranty.

TYPICAL WASHDOWN INSTALLATION (IF USED FOR WASH-DOWN):

spray nozzle or

water valve (optional)

shurflo

255 series

strainer

inlet

6 FT. max [2.7 m]

vertical lift from

outside water level

to pump inlet port

use flexible high pressure tubing

from thru-hull fitting, strainer,

and pump. tubing should be rated

for below water line use.

sea-cock

valve

through

hull fitting

911-759 Rev G 12/08 ECO #: 16135 Page 1 of 4

HEX-WING FITTINGS

HEX-WING

FRONT VIEW

242-3366

1/2” NPT-14 (F) X 1/2” -

14 NPT (Male)

242-2946

1/2” NPT-14 (F) X 3/4”

Barb Straight

242-3946

1/2” NPT-14 (F) X 3/4”

Barb Elbow

242-2936

1/2” NPT-14 (F) X 5/8”

Barb Straight

242-3936

1/2” NPT-14 (F) X 5/8”

Barb Elbow

242-2926

1/2” NPT-14 (F) X 1/2”

Barb Straight

242-3926

1/2” NPT-14 (F) X 1/2”

Barb Elbow

STRAINERS AVAILABLE:

Number Components Part Number

1 1/2 Barb Straight x 1/2 NPT Hex Wing Nut 255-225 2 1/2 NPS-M x 1/2 NPT Hex Wing Nut 255-215

2 1

242-2916

1/2” NPT-14 (F) X 3/8”

Barb Straight

242-3916

1/2” NPT-14 (F) X 3/8”

Barb Elbow

242-2866

Swivel Straight Adaptor

Hex-Wing Nut Combo

242-2906

1/2” NPT-14 (F) X 1/4”

Barb Straight

242-3906

1/2” NPT-14 (F) X 1/4”

Barb Elbow

P/#: 182-200

SERVICE KITS

1 Pressure Switch 94-668-00 2 Upper Housing 94-670-01 3 Valve Housing 94-669-00 4 Drive Assembly 94-670-00 5 Motor 12V DC 77-013-07

911-759 Rev G Page 2 of 4

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