Dometic Spot Zero ZTC2000 User manual

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www.spotzerowater.com

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TABLE OF CONTENTS
1. INTRODUCTION ........................................................................................................ 4
Congratulaons.............................................................................................................................................5
System Requirements and Operaon Guidelines.........................................................................................5
Acronyms and Denions.............................................................................................................................7
Principles of Reverse Osmosis ......................................................................................................................8
Unit Specicaons ........................................................................................................................................9
2. INSTALLATION AND COMISSIONING ........................................................................... 10
Feed Water.................................................................................................................................................... 11
Electrical Connecons................................................................................................................................... 14
Commissioning Report Form ........................................................................................................................ 18
3. SYSTEM OPERATION................................................................................................... 19
Home Screen................................................................................................................................................. 20
Emergency Stop ............................................................................................................................................ 21
Operaon from Dock Feed ........................................................................................................................... 22
Water Maker Source..................................................................................................................................... 23
Menu Opons ............................................................................................................................................... 24
Summary ....................................................................................................................................................... 25
System Informaon....................................................................................................................................... 25
Alarms ........................................................................................................................................................... 26
Alarm History ................................................................................................................................................ 27
Service Menu ................................................................................................................................................ 28
Units of Measurement.................................................................................................................................. 28
Maintenance ................................................................................................................................................. 29
Remote Support............................................................................................................................................ 29
Enable Remote Support................................................................................................................................ 30
Remote Touch Screen Setup......................................................................................................................... 36
4. SYSTEM MAINTENANCE ............................................................................................. 40

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5. SYSTEM SCHEMATICS ..............................................................................................46
6. SYSTEM SPECS AND PARTS ......................................................................................51

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1. INTRODUCTION

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CONGRATULATIONS
Your Spot Zero™ reverse osmosis system is a durable piece of equipment, which, with proper care, will last
for many years. This User’s Manual outlines installaon, operaon, maintenance and troubleshoong details
vital to the sustained performance of your system.
Your system is designed to operate at a pressure of 80- 150 psi, unless otherwise stated. The recovery set for
your system is between 50%-75%.
NOTE: Prior to operang or servicing the Spot Zero reverse osmosis system, this User’s Manual must be read
and fully understood. Keep it and other associated informaon for future reference and for new operators
or qualied personnel near the system.
SYSTEM REQUIREMENTS AND OPERATION GUIDELINES
Plumbing
The membranes and high pressure pumps used on Spot Zero systems require a connuous and non-
turbulent ow of water to the system with a minimum feed pressure of 20 psi during operaon, which does
not exceed 105°F.
The tubing or piping used for the inlet of the feed water is 1/2 NPT. The tubing or piping used for the dis-
charge of the concentrate is 3/8 O.D. and should be run to an open over board in a free and unrestricted
manner.
The tubing or piping used for the product is 3/8 O.D. and can be transported to the holding tank or directly
through a high quality nylon tubing or PVC pipe or other FDA accepted materials.
Material must not precipitate in the system. Be certain that all of the components of the feed water are sol-
uble at the concentraons aained in the system
CAUTION: Any restricons or blockage in the overboard discharge line can cause back pressure, which will
increase the system’s operang pressure. This can result in damage to the system’s components and possi-
ble leaks of components or tubing.
Electrical
The motors used on Spot Zero™ systems are pump and motor combinaons. They are available in single-
phase 115 volt or 230 volt AC.
Please ensure that the electrical circuit supplying the system is compable with the requirements of the spe-
cic Spot Zero™ model.

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Pre-Filtraon
Spot Zero™ systems are supplied with a 1 micron sediment pre-lter (part # 252404005) that lters out most
parcles over 1 microns, a GAC/KDF (part # 252404004) Cartridge that removes chlorine, chloramine, VOCs
and heavy metals. CAUTION: a tradional carbon block lter must not be used as it will not remove chlora-
mines and will cause permanent membrane damage. Pre Filters should be changed every 100 hours and/or
whenever there is a pressure dierence of 15 psi or more between the pressure readings before and aer
the lter. The pump must NEVER be run dry. Operang the pump without sucient feed water will damage
the pump. ALWAYS feed the pump with ltered water. The pump is suscepble to damage from sediment
and debris.
NOTE: THE SZ10KDF2 CARTRIDGE MUST BE FLUSHED OUTSIDE OF SYSTEM BEFORE OPERATING TO REMOVE
CARBON DUST. You can head to www.spotzero.com/support to see demo videos. Do not
aempt to clean used lter cartridges. The SZ10KDF2 is rated to absorb chlorine, chloramine, heavy metals,
etc. up to 18,000 gallons of feed water, which is the equivalent to approximately 100 hours of run me.
CAUTION: If the pre-lter becomes clogged and the water ow to the pump is reduced or
interrupted, cavitaon will occur. This will damage the pump.

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ACRONYMS AND DEFINITIONS
ACRONYM/SYMBOLS DEFINITION
FWF FRESH WATER FLUSH
RO REVERSE OSMOSIS
PSI POUNDS PER SQUARE INCH
GPM GALLONS PER MINUTE
GPD GALLONS PER DAY
TDS TOTAL DISSOLVED SOLIDS
PPM PARTS PER MILLION
TCF TEMPERATURE CORRECTION FACTOR
LP SWITCH LOW PRESSURE SWITCH
HP SWITCH HIGH PRESSURE SWITCH
ΦPHASE
SW SEA WATER
FW FRESH WATER

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PRINCIPLES OF REVERSE OSMOSIS
REVERSE OSMOSIS
How Fresh Water Is Produced
Reverse Osmosis or “RO” is a process where freshwater water is produced by pumping saltwater
through a semi-permeable membrane.
Osmosis
Osmosis is a naturally occurring process where a weak solution will cross a semi-permeable mem-
brane to mix with a highly concentrated solution. For example a freshwater solution will naturally
want to mix with a saltwater solution.
Reverse Osmosis
To reverse this process work is put into the system using a pump. The pump causes pressure to
build up on the saltwater side of the membrane. This pressure forces water across the semi-
permeable membrane. The membrane is designed to allow the water molecules to pass while
preventing the salt and other solids from doing so. Fresh water is collected on the other side of
the membrane as a result.

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UNIT SPECIFICATIONS
ZTC MODEL 2000 3000
FW Configuration
(Spot Zero) 1 Vessel 2 Vessels
Feed Water Source Fresh Water Fresh Water
Rated Production Dock
Water –gpd(ldp) 2000(7571) 3000(11356)
Rejection and Flow Rates
FW Nominal TDSRejec-
tion % (Spot Zero) 95% 95%
FW Minimum
Concen-trate Flow
gpm (lpm)
1 (3.7) 1(3.7)
Connections
FW Feed inch
(Spot Zero)
1/2” 1/2”
Product inch 3/8” QC 9.5mm 3/8” QC 9.5mm
Concentrate inch 1/2” QC 12.7mm 1/2” QC 12.7mm
Membranes
FW Membrane Per
Vessel 11
FW Membrane Size 4039 4039
Pumps
FW Pressure Pump
Type Vane Vane
FW RO Motor amps 5.1 5.1
Electrical
Voltage 230V 50/60Hz 1Φ230V 50/60Hz 1Φ
Weight lb. (kg) 108(49) 108(49)

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2. INSTALLATION AND COMMISSIONING

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INSTALLATION PROCEDURE
FEED WATER
1. Plumb the feed water from the dock into the pre-lter inlet pressure regulator ng. 1/2” FNPT or 1”
MNPT custom connecon from customer.
Feed from dock
2. Tube cung and installaon procedure.
Cut the tube square and remove burrs and sharp edg-
es. Ensure the outside diameter is free of score
marks. For so or thin walled tube we recommend
the use of a tube insert.
Push the tube into the ng, to the tube stop.
To disconnect, ensure the system
is depressurized, push the collet
square against the ng. With the
collet held in this posion the tube
can be removed.

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3. From the pre- lter outlet ng, run the white nylon 1/2” Spot Zero water tubing to the feed from
pre-ltraon ng.
4. From the “Overboard” discharge ng, run the white nylon 1/2” Spot Zero water tubing to a
dedicated overboard ng. Water must be allowed to run freely, without any restricons or blockage
in the brine discharge line. Be sure that no back pressure exists in the “Overboard” discharge line.
1/2” Tube
To overboard
1/2” Tube
Note: There is an internal check valve in the brine discharge line in the system.

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5. From the product to tank ng, run the white nylon 3/8” Spot Zero water tubing to the vessels fresh
water tank.
Ship’s fresh
water tank
3/8” Tube
FEED FROM WATERMAKER
1. Connect the 3/8” product line from the water maker to the “WATER MAKER IN” ng. Always install a
three way valve in line with this, so the water can be diverted to the spot zero system, or to the vessels
fresh water tank.
3/8” Tube
From water maker

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Electrical Connecons
1. Supply and connect specied power (115v or 230v) from the vessels panel to the ZTC panel. Connect line
1 and line 2 to the terminals, and connect the ground wire to the ground bus bar. Be sure to conrm sys-
tems rated voltage before applying power. Reference DWG SZ0027.
NOTE: IT’S RECOMMENDED
THAT A QUALIFIED ELEC-
TRICIAN WIRE YOUR SYS-
TEM IN ACCORDANCE
WITH ABYC REQUIRE-
MENTS.
WARNING: TO REDUCE THE
RISK OF ELECTRICAL
SHOCK, THE INCOMING
POWER SUPPLY MUST IN-
CLUDE A PROTECTIVE
GROUND.

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2. Connect the Pre-lter power leads as shown below.

SHIP
S
WAT
E
BRINE
DISCHARGE
OVERBOARD
FEED FROM
WATERMAKER
(DESALINATOR)*
PRODUCT
LEGEND
CHECK VALVE
NEEDLE VALVE
SOLENOID VALVE
F
S
FS
SOLENOID VALVE
FLOW SENSOR
PRODUCT TO
TANK
TAP WATER
FEED FROM
DOCK
HE
RESTRICTOR
0.3
FR
XX
FLOW RESTRICTOR
E
D VOLUME MUST
SYPHON BREAK
F
R

C
H
E
K
J
L
F
A
B
NOTES:
1. SOME PARTS REMOVED IN ORDER TO MAKE VISUALS MORE CLEAR.
PRE-FILTERS
INLETS & OUTLETS
LOCATION
DESCRIPTION
TUBE SIZE
A
TO ZTC TANK
1/2"
B
FEED FROM DOCK
1/2" NPT
C
FEED FROM PRE FILTER
1/2"
E
VENT/OUTBOARD
1/2"
F
WATERMAKER IN
1/2"
H
PRODUCT TO TANK
3/8"
J
MEMBRANE SUPPLY
1/2"
K
MEMBRANE RETURN
1/2"
L
MEMBRANE PRODUCT
3/8"
SHEET 1 OF 1
04-17-17
JIL
UNLESS OTHERWISE SPECIFIED:
SCALE: 1:10
DWG. #: SZ0032
INLET & OUTLET LOCATIONS
ZTC
NAME
DATE
Q.A.
MFG APPR.
ENG APPR.
CHECKED
DRAWN
DIMENSIONS ARE IN INCHES TOLERANCES:
.015
FRACTIONAL
1/32
ANGULAR: MACH
1/2 BEND
1
TWO PLACE DECIMAL
.010
THREE PLACE DECIMAL
.005
PROPRIETARY AND CONFIDENTIAL THE INFORMATION CONTAINED IN THIS DRAWING IS THE SOLE PROPERTY OF SPOT ZERO. ANY REPRODUCTION IN PART OR AS A WHOLE WITHOUT THE WRITTEN PERMISSION OF SPOT ZERO IS PROHIBITED.

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3. SYSTEM OPERATION

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SPOT ZERO ZTC TOUCHSCREEN NAVIGATION
Home Screen
From any screen the Spot Zero icon can be pressed to return to this home screen. There is also a lot of infor-
maon on this home screen that is important to the operaon of this system. Some of the images can be
pressed to bring up dierent informaon and seng choices. Also the menu buon can be pressed to access
more informaon. This manual will go through these opons.
Operaon Procedures
The Spot Zero ZTC is a fully automac system. The capacity of the system is shown on the membrane in cen-
ter of the screen. It will operate when water is present, and shut down when water is no longer fed to the
system. On the home screen the double pass processing tank shows the water level present in the system.
When the tank is full the unit will start to operate. When the tank is emped, the system will shut down.
System will turn ON System will turn OFF