GE Merlin Handbuch

Merlin®

Reverse Osmosis System by GE

Installation and Maintenance Manual

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SAFETY GUIDES 3

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SAFETY GUIDES

Read and follow all steps and guides carefully before installing and using your

reverse osmosis system.

Do not use this product to make safe drinking water from non-potable water

sources. Do not use the system on microbiologically unsafe water, or water of

unknown quality without adequate disinfection before or after the system.

This reverse osmosis system contains replaceable components (membrane

elements). These components are critical for the effective reduction of total

dissolved solids and specific contaminants that are listed in the Product Data

Sheet.

The Merlin Reverse Osmosis System does not have a monitoring device for

contaminants. To verify that the system is performing satisfactorily the product

water should be tested periodically by the system’s installing dealer or a certified

laboratory, every six months. The laboratory should be certified for testing the

specific contaminants of concern. For a listing of certified laboratories, contact

local regulatory agencies. Within the United States, many state-run Department

of Natural Resources or Department of Health Services maintain listings of

certified laboratories.

Consult your local public works department for plumbing and sanitation codes.

Follow your local codes if they differ from this manual.

The reverse osmosis system works on water pressures of 40 psi

(2.8 bar) minimum to 80 psi (5.5 bar) maximum. Water pressure can be reduced by

installing a pressure reducing valve in the water supply pipe to the RO system. A

booster pump should be used for low pressure applications.

Do not install the reverse osmosis system in extreme hot or cold temperatures.

Temperature of the water supply to the reverse osmosis system must be between

40°F (4°C) and 100°F (38°C). Do not install on hot water lines.

The reverse osmosis membranes contain a foodgrade preservative for storage

and shipment. All new membranes require a minimum 2 hour rinse to properly

rinse out the preservative. The preservative is not harmful but makes the product

water taste objectionable. Rinsing the membrane also acts a a performance

conditioner. All new membranes will reach their stable maximum performance

after 8 hours of rinsing.

4 THE BASIC REVERSE OSMOSIS SYSTEM

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THE BASIC REVERSE OSMOSIS SYSTEM

Your Merlin Reverse Osmosis System is a water treatment unit. It uses water

pressure to reverse a natural physical process called osmosis. Water, under

pressure, is forced through a semi-permeable membrane to filter out minerals

and impurities. Treated drinking water goes to the faucet. Minerals and impurities

are sent to the drain with RO waste water.

The system includes replaceable filters and membrane elements. The prefilter

reduces sand, silt, dirt, rust particles, other sediments, and chlorine from the

water supply before they enter the RO membrane elements. The postfilter

reduces any tastes and/or odors that may remain in the water after passing

through the RO membrane elements.

BEFORE INSTALLING THE RO SYSTEM

• Best performance of the system will be achieved when the incoming water

has been treated (softened).

• The water coming into the system must be within certain limits for sediments,

pressure, etc. Refer to the specifications to determine if your installation is

within the limits.

• A water quality analysis can be performed to determine if incoming water

requires any treatment. Contact your dealer/installer.

• The filters and membrane elements in the RO system need to be replaced on

a regular basis. Follow the instructions for replacement that are in this

manual.

• The faucet options for the Merlin RO have not been tested or certified by the

Water Quality Association. It is recommended that faucets meeting National

Codes be used.

• The feed pressure gauge supplied with some Merlin RO systems has not been

tested or certified by the Water Quality Association. It is recommended to

remove the feed pressure gauge during normal system operation.

NOTE: For optimal system performance, use the system for at least

2 minutes continuously each day.

WARNING: The Merlin RO system is designed to work without the aid of

a pressurized storage tank. Installation of a pressurized storage tank will

negatively affect system performance.

THE BASIC REVERSE OSMOSIS SYSTEM 5

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MERLIN COMPONENTS

OnDemand RO

COMPLETE

MANIFOLD

PN 1244617 (1 pc)

SUPPORT

LEG

PN 1239708 (1 pc)

SUMP

& SEAL

SUMP

PN 1239705 (3 pcs)

O-RING

PN 1240326 (3 pcs)

ELEMENT

PN 4000569 (2 pcs)

FITTINGS

& LOCKING BAR

INSTALL KIT

PN 1255693

LOCKING BAR

DISCONNECT

PN 1239731 (1 pc)

COLLET

LOCK CLIP

RED

PN 1240626 (1 pc)

COLLET

LOCK CLIP

WHITE

PN 1240627 (5 pcs)

COLLET

LOCK CLIP

BLUE

PN 1240628 (2 pcs)

DRAIN

DISCONNECT

ELBOW - BLACK

PN 1264462 (1 pc)

STANDARD COMPONENTS SUPPLIED WITH

ALL MERLIN CONFIGURATIONS

TUBING

INSTALL KIT

PN 1255736

3/8" BLACK

TUBING (4 ft)

3/8" BLUE

TUBING (4 ft)

1/2" NATURAL

TUBING (4 ft)

1/2" RED

TUBING (3 ft)

SILICONE LUBRICANT

FEED

DISCONNECT

ELBOW - WHITE

PN 1240117 (1 pc)

PERMEATE

DISCONNECT

ELBOW - BLUE

PN 1240118 (1 pc)

FLUSH

DISCONNECT

ELBOW - LT BLUE

PN 1240119 (1 pc)

PLUG

1/4"

PN 1240624 (1 pc)

FAUCET

CONNECTION

FITTING

PN 1240625 (1 pc)

SILICONE

LUBRICANT

SGL USE TUBE

PN 1013501 (1 pc)

DRAIN BOA

KIT

PN 1240564 (1 pc)

AIR-GAP

FAUCET KIT

PN 3020487 (1 pc)

CARBON

PRE-FILTER

PN 3038333 (1 pc)

SEDIMENT

PRE-FILTER

PN 1266690 (1 pc)

CARBON

POST-FILTER

PN 255526-09 (1 pc)

Note: For use with

chlorinated water

supplies.

Note: For use with

non-chlorinated water

supplies.

ASO

CARTRIDGE

PN 1269491 (1 pc)

OnDemand RO

ADDITIONAL COMPONENTS

(see table below)

1255052 YES** Included - Included - Included Included

1263870 YES** Included - Included - Included -

3002041 NO - Included Included - Included Included

3002044 NO - Included Included - Included -

3002043 NO - Included - Included - -

MERLIN AGENCY CARBON SEDIMENT CARBON ASO DRAIN BOA AIR GAP

PN* CERTIFICATION PREFILTER PREFILTER POSTFILTER CARTRIDGE KIT FAUCET KIT

Merlin I

Merlin II

Sediment w/ faucet

Sediment w/o faucet

Light commercial

NAME

*Includes all "Standard" components.

**See Performance Data Sheet included with Merlin for Certification Information.

Note: For use

without a carbon

postfilter installed.

FEED PRESSURE

GAUGE

PN 3002791 (1 pc)

6 THE BASIC REVERSE OSMOSIS SYSTEM

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LOCATION OF SYSTEM

The reverse osmosis system is designed for installation under a sink, usually in

the kitchen or bathroom. The RO assembly can be placed on the cabinet floor in

any position that does not apply pressure on the disconnect elbows. The RO

product water faucet installs on the sink or on the countertop next to the sink.

The RO system can also be located in a location away from the faucet. A nearby

water source and drain point are required.

Water Supply: To provide supply water to the RO system inlet, a feed supply

fitting is required or install pipe fittings as needed. The feed water valve should be

located as close to the manifold assembly as possible. USE A POTABLE COLD

WATER SUPPLY ONLY. Softened water is preferred as it will extend the life of the RO

membrane element.

Drain Point: A suitable drain point is needed for reject water from the RO system.

A floor drain, laundry tub, standpipe, sump, etc. are all acceptable. If discharging

into the utility sink or standpipe, an air gap of greater than 1.5 inches above the

flood rim must be provided. A sink

p-trap drain adapter is included to install as an optional drain point where codes

permit.

Do not connect the system drain line to the dishwasher drain or near the garbage

disposal. Back pressure from these units may cause the air gap to overflow.

Dispensing Faucet: The faucet should be placed near the sink where drinking

water is normally obtained. Convenience of use (filling of water pitchers and

glasses) and an open area beneath the faucet under the sink for attaching

product and drain tubing are considerations. A 2-inch diameter flat surface is

required above and below the installation site. The thickness of mounting surface

should not exceed 1-1/4 inches. Avoid any strengthening webbing on the

underside of the sink.

NOTE: Keep the lengths of tubing short. Longer lengths of tubing will

decrease system performance. A booster pump can be used on the

supply line.

NOTE: All plumbing should be done in accordance with state and local

plumbing codes.

Some codes may require installation by a licensed plumber. Check with

the local plumbing authority prior to installation.

WARNING: All components and tubing should be located in an area

which is not exposed to freezing temperatures. Do not expose unit or

tubing to direct sunlight.

THE BASIC REVERSE OSMOSIS SYSTEM 7

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RO Manifold Assembly: The manifold can be installed on either the right or left

side of the under-sink area or cabinet. Installation in the basement is also an

option. One possible location is near the laundry/utility sink where cold potable

water and drain access are close. The location chosen should allow adequate

clearance and accessibility for membrane element changes.

Optional Flush Kit: The flush kit, if used, should be placed within 6 feet of the

manifold assembly. This will minimize pressure drop and allow the flush system to

operate most efficiently.

In restricted under-sink areas, it may be easier to install the faucet first. Allow

adequate tubing lengths for final system placement.

Figure 1 Typical Under-Sink Installation

Dispensing Faucet

with Air Gap

Inlet-1/2" Natural

Feed Water Valve

Cold Water Line Only

Carbon Postfilter

Waste Concentrate

3/8" Black

Drain - 1/2" Red

Product - 3/8" Blue

Drain Coupling

Install above P trap

Plugged Top Connector

Locking Bar

Keep to Minimum

Prefilter

RO Membranes

Support Leg (sump wrench)

Manifold

Elbow

Connectors

Note: If a flush tank is not

installed the manifold

connection must remain

plugged. Removal of plug

will cause a system leak.

Feed Pressure Gauge

8 THE BASIC REVERSE OSMOSIS SYSTEM

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Figure 2 Typical Basement Installation

Floor

Dispensing Faucet

without Air Gap

1.5" Air Gap Required

Inlet-1/2" Natural

Drain - 3/8" Black

Feed Water Valve

Cold Water Line Only

Carbon Postfilter

Product - 3/8" Blue

RO Assembly

Note: If a flush tank is not

installed the manifold

connection must remain

plugged. Removal of

plug will cause a system

leak.

Keep to Minimum

THE BASIC REVERSE OSMOSIS SYSTEM 9

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Figure 3 Typical Light Commercial Installation

1.5" Air Gap Required

Inlet-1/2" Natural

Drain - 3/8" Black

Feed Water Valve

Cold Water Line Only

Feed Pressure

Gauge

RO Assembly

Note: If a flush tank is not

installed the manifold

connection must remain

plugged. Removal of

plug will cause a system

leak.

External Prefilter

Product Storage Tank

To Point of Use

Vented to

Atmosphere

Liquid level float

sensor to control

feed solenoid valve

Feed Solenoid

Valve

10 THE BASIC REVERSE OSMOSIS SYSTEM

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REQUIRED TOOLS AND MATERIALS

• Adjustable wrench, and larger adjustable jaw pliers or pipe wrench to fit sink

drain

• Saw for cutting drain pipe

• Slotted and Phillips head screwdrivers

• Tubing cutters

• Electric drill and bits for cutting the faucet mounting hole

Note that some sinks will have a pre-drilled hole with a plug for the faucet.

INSTALLATION

STEP 1: Install cold water supply valve

STEP 2: Install drain adapter

STEP 3: Install faucet

STEP 4: Make tubing connections

STEP 5: Install RO assembly

STEP 6: Put system into operation

STEP 1: INSTALL COLD WATER SUPPLY VALVE

Comply with local plumbing codes. A typical connection using a water supply

valve is shown.

Water Supply Valve

Cold water pipes vary in size and style. The installer will determine type of valve

that will be used. Install a valve on the cold water supply pipe to adapt 1/2-inch

OD tubing. If threaded fittings are used, be sure to use pipe joint compound or

Teflon tape on outside threads.

Turn the valve off.

NOTE: Consult a licensed plumber if you are not familiar with plumbing

procedures.

NOTE: Be sure to turn off the water supply and open a low faucet to

drain the pipe.

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