Dometic MasterFlush 8740 User manual

1
8700 Series
MasterFlush®
Toilets
INSTALLATION
Macerator Toilet
Installation..................... 3
EN
Mazerier-WC
Installation.................... 13
DE
WC dilacérateur
Installation .................... 23
FR
Inodoro triturador
Instalación .................... 32
ES
Toilet met versnijdingspomp
Installatie ..................... 41
NL
WC di macerazione
Installazione ................... 50
IT
Silppuripumppu-wc
Asennus...................... 59
FI
Macerator-toalett
Installation .................... 68
SV
Findelingstoilet
Installation .................... 77
DA
Macerator-toalett
Montering..................... 86
NO

2
Dometic 8700 Series MasterFlush Toilet
A
BC
D
E
F
A
A
C
B
B
C
4
5
3
2
1
2
4
5
67
8
9
11
10
3
A
B
CD
F
E
G
I
J
K
L
HO
M
N
1

3
Dometic 8700 Series MasterFlush Toilet Notes on using the manual
1 Notes on using the manual .................................................3
2 General safety instructions ..............................................3 - 4
3 Components ............................................................5
4 Specications ...........................................................6
5 Installation ..........................................................7 - 11
6 RV installation appendix ..................................................11
7 Customer service........................................................12
1 Notes on using the manual
Note
Supplementary information for operating the device.
fig. 1A, page 2 : This refers to an element in an illustration. In this example, item A in
gure 1 on page 2.
Caution!
Safety Instruction: Failure to observe this instruction can cause material damage and
impair the function of the device.
EN
Table of contents
2 General safety instructions
The manufacturer will not be held liable for claims for damage resulting from the following:
• Faulty assembly or connection
• Damage to the unit from mechanical inuences, misuse or abuse
• Alterations to the unit without express written permission from the manufacturer
• Use for purposes other than those described in the operating manual
2.1 Warnings – marine and recreation vehicle applications
The following statements must be read and understood before installing, servicing and/or
operating this product on a boat. Modification of this product may result in property damage.
Dometic recommends that a qualied marine or RV technician or electrician install or service this
product. Equipment damage, injury to personnel or death could result from improper installation.
DOMETIC ACCEPTS NO RESPONSIBILITY OR LIABILITY FOR DAMAGE TO EQUIPMENT, OR PERSONAL
INJURY OR DEATH THAT MAY RESULT FROM IMPROPER INSTALLATION, SERVICE OR OPERATION
OF THIS PRODUCT.

4
Dometic 8700 Series MasterFlush ToiletGeneral safety instructions
Caution! Hazard of Flooding
If toilet uses raw water for ushing at ANY time, a raw water pump controlled by an auto-
matically operating demand switch MUST NOT be installed. If the onboard water valve or
any plumbing connections were to leak, the automatically operated pump would start and
could ood the boat. Failure to comply can cause loss of property and life.
Caution! Hazard of Flooding
Before beginning any work on this product, be sure that all electrical power to the unit has
been turned off and that seacocks are in the CLOSED or OFF position. Failure to do so can
result in ooding which can cause loss of property and life.
Caution! Hazard of Shock or Fire
Always use recommended fuse, circuit breaker and wire size. Failure to do so can result in
re that can cause the loss of property and life.
Caution!
Overlling the holding tank can create serious damage to the sanitation system, such as
rupturing the holding tank and releasing tank contents into the bilge. To prevent this pos-
sibility, Dometic recommends using the “full” tank shut-down relay in the toilet’s electronic
control module. The “full” signal from the holding tank can be generated by an optional
Dometic DTM01C tank monitor or DTM04 four-level tank monitor system.
Caution! Hazard of Flooding
If toilet rim is below the waterline at ANY time (during any conditions of heel, load or trim)
and is connected to ANY through-the-hull ttings, properly positioned ventilated (vented)
loops MUST be installed in intake* or discharge piping to prevent potential back siphonage
of seawater into the boat. Failure to do so can result in ooding which can cause loss of
property and life.
* if connected to raw water
Caution! Hazard of Flooding
If toilet is connected to ANY through-the-hull ttings, ALL exible hoses must be of marine
sanitation quality and must be secured to ANY ttings (such as those at seacock, vented
loop or toilet) with two stainless steel, worm-drive hose band clamps at each connection.
Connections MUST be checked frequently for integrity. Failure to comply can result in
ooding which can cause loss of property and life.
Caution! Hazard of Flooding
If the toilet is connected to ANY through-the-hull ttings, properly installed seacocks MUST
be installed in all piping connected to through-the-hull ttings. Seacocks MUST be easily
accessible to all users of the toilet or secondary valves tted in hoses where they are easily
accessible. All valves MUST be full bore valves and of marine quality. Screw-to-close gate
valves are not recommended. Failure to do so can result in ooding which can cause loss
of property and life.
2.2 Warnings – marine applications

5
Dometic 8700 Series MasterFlush Toilet Components
3 Components
(g. 1, page 2)
Ref. Description
A Macerator toilet
B Dometic DFT ush switch
C Control module
D 4-wire cable to toilet macerator
pump and water valve
E Cable for Dometic DFT ush switch
or DSS status panel (RJ45/ethernet)
F Cable to toilet’s electronic ush
handle (for ush handle model)
G Incoming electrical power wires
HPower wires to raw water pump (opt.)
I Wire for “3/4-full tank” signal
J Wire for “full tank” signal
K Floor mounting hardware kit
L Floor mounting template
M Flush handle (for ush handle model)
N Dometic DSS status panel
(for ush handle model)
OCable for ush handle and other mfr.
status panel (for ush handle model)
Ref. Description
1 Anti-siphon valve
2 Vacuum breaker
3 Discharge loop outlet
4 Discharge adapter tting
5 Discharge hose tting
6 Macerator pump
7 Water valve
8Water line - 0.5 in. NPT tting
9 4-pin cable connector
10 Flush handle
(on ush handle model only)
11 Flush handle cable connector
Refer to complete parts list (packed separately)
for additional information.
(g. 2, page 2)

6
Dometic 8700 Series MasterFlush ToiletSpecifications
4.2 Minimum System Requirements
4.3 Dimensions (g. 3 , page 2)
Ref. Dimension
A 19 in. / 483 mm
B 14 in. / 356 mm
C21.5 in. / 546 mm
D 17.5 in. / 445 mm - seat height
E 17 in. / 432 mm
F 33.5 in. / 851 mm - seat lid up
Ref. Dimension
A 2 in. / 51 mm
B 3.25 in. / 83 mm
C0.4375 in. / 11 mm
Ref. Dimension
A 19 in. / 483 mm
B 15.75 in. / 400 mm
C21.5 in. / 546 mm
D 17.5 in. / 445 mm - seat height
E 17 in. / 432 mm
F 33.5 in. / 851 mm - seat lid up
Ref. Dimension
A 4.187 in. / 106 mm
B 5.25 in. / 133 mm
C2.063 in. / 52 mm
Models with wall-mounted
flush touchpad (no ush handle)
Dometic flush switch/status panel
(g. 4 , page 2)
Models with flush handle
Control module (g. 5 , page 2)
4 Specifications
4.1 Materials
Toilet: vitreous ceramic
Macerator pump body: glass-lled polypropylene
Control module housing: ABS
Dometic DFT switch panel frame: ABS
Dometic DFT switch panel: polycarbonate resin
Flush handle: plated brass (on applicable toilet
models)
Electrical Circuit breaker 20 amps/12 V DC; 15 amps/24 V DC
Wiring* 12 ga. (up to 20 ft./6.1 m from breaker)
Water
Supply
Fitting 1/2 in. NPT
Flow rate 2.5 gpm / 9.5 lpm
Maximum ow pressure 40 PSI / 276 kPa
Discharge
Inside diameter 1.5 in. / 38 mm or 1 in. / 25 mm
Horizontal run** 98 ft. / 30 m maximum
Vertical run** 9.8 ft. / 3 m maximum
* For RV installation, see Appendix on page 15.
** Horizontal and vertical run distances are not cumulative. Check for adequate discharge ow if installation nears one of these limits.
Specications are subject to change without notice.

7
Dometic 8700 Series MasterFlush Toilet Installation
5 Installation
5.1 Fresh water system layout - marine application
5.2 Raw water system layout - marine application (additional components required)
Note
Use cold water only. Include shut-off valve in water line for maintenance purposes.
Notes
Use cold water only. Include shut-off valve in water line for maintenance purposes.
Use primary and secondary raw water lters.
Raw water pump MUST NOT be demand-type. Pump is controlled by control module.
Install vented loop as shown. It must be equipped with integral check valve that permits air into line to
prevent siphoning.
Dometic 8700 series macerator toilets can
operate with an onboard pressurized freshwater
system with a minimum ow rate of 2.5 gpm
(9.5 lpm) at the toilet. Onboard fresh-water
demand systems include a water pump that
automatically draws water from a water
Dometic macerator toilets can ush on seawater but require a separate pump for this purpose. The
pump is activated by the signal from the toilet’s electronic control module that would operate the
integral water valve in a fresh water system. If the raw water pump draws more than 18 amps of
current, a 12 or 24 V DC electrical relay must be installed.
storage tank when a valve anywhere in the
piping system is opened. Dometic toilets are
equipped with an electrically operated water
valve and a backow preventer to prevent
contamination of onboard potable supplies.
6
7
VENT
FITTING
SEACOCK
VENT
FILTER
DISCHARGE
PUMP
DECK
DISCHARGE “3/4” AND
“FULL” LEVEL
PROBES (opt.)
CONTROL
MODULE
CONTROL
MODULE
MACERATOR
TOILET
MACERATOR
TOILET
FLUSH
SWITCH
FLUSH
SWITCH
0.5 in./13 mm
FRESH WATER
HOSE
0.5 in./13 mm
WATER HOSE
0.625 in./16 mm HOSE
1 in./25 mm HOSE
SEACOCK
TO SUCTION SIDE OF
RAW WATER PUMP
FINE WATER FILTER
(100 MESH)
SMALL ENGINE INTAKE STRAINER (COARSE)
RAW WATER
PUMP
WATER LINE
HOLDING TANK
(cut-away view)
VENTED LOOP/CHECK VALVE
Must be 8 in./203 mm minimum
above water line during all
conditions of heel, trim or load

8
Dometic 8700 Series MasterFlush ToiletInstallation
5.3 Toilet system with wall touchpad and through-the-floor connections
- all applications
1. Place oor mounting template in desired location (g. 8). For optimal user comfort, make sure
walls or other interior xtures are at least 11 in. (279 mm) away from centerline of template.
2. Center punch all holes through template.
3. Remove template from oor. Drill all access holes as indicated on template (g. 9).
4. Plan ush switch panel and electronic control module locations so that electrical connections can
be made with cables provided. Be sure module and wires cannot get wet.
5. Use Dometic wall switch template to mark location of fastener and access holes. Drill 1 in.
(25 mm) hole, then fasten panel bracket to wall (g. 10 ).
6. Route Dometic ush switch panel cable (g. 1
E, p. 2) from ethernet connector on control
module to access hole at ush switch panel location. Attach cable to Dometic DFT ush switch
panel, then snap the panel cover onto the panel bracket (g. 10 ).
7. Install control module in cool, dry location, then attach Dometic ush switch cable to ethernet
connector on control module (g. 11 ).
8. With electrical power off, complete wiring connections to control module. Refer to wiring diagram
printed with parts list (packed separately).
9. Route 4-wire control module cable (g. 1D, page 2) to toilet through access hole in oor.
10. Route water supply and discharge plumbing to toilet according to system requirements (Section
4.2). Make sure to provide extra discharge hose length to assure easy connection to toilet
(g. 12 , page 9).
8910
Note
When installing Vimar or Gewiss ush switch/status panel,
disregard instructions for installing Dometic touchpad switch.
Install Vimar or Gewiss component on wall according to
manufacturer’s instructions, then attach end of cable to 6-wire
connector (g. 1D, page 2) at control module.
11

9
11. Loosen band clamp on discharge loop outlet and remove discharge adapter tting/hose
tting assembly (g. 13 ).
12. Lubricate discharge tting assembly and inside end of discharge hose with liquid dishwashing
soap. Push discharge tting assembly into discharge hose and connect with two hose clamps.
Be sure to position hose clamp screws 180° apart from each other (g. 14 ). Place toilet near
access holes and oor brackets.
13. Connect toilet water line and 4-pin connector to water supply line and control module cable.
14. Position toilet over oor brackets and tilt toilet up from back. Push discharge assembly tting
and hose up into discharge loop outlet. Lower toilet to oor and tighten band clamp (g. 15 ).
15. Turn on water supply and electrical power to toilet, and check for leaks. Press “Flush” switch
(g. 42, page 2). If leak occurs, tighten connection.
16. At oor mounting holes, drill pilot holes for hex-head oor fasteners. Install fasteners and
washers using a 3/8 in. (10 mm) socket wrench (g. 16 ).
17. Cover oor fasteners with plastic covers (g. 17 ).
Dometic 8700 Series MasterFlush Toilet Installation
12
15 16 17
14
13

10
Dometic 8700 Series MasterFlush ToiletInstallation
5.4 Toilet system with flush handle and through-the-floor connections
- all applications
1. Follow steps 1-3 in Section 5.3.
2. Plan electronic control module and status panel locations so that electrical connections can be
made with cables provided. Be sure module and wires cannot get wet.
3. Use Dometic wall switch template to mark location of fastener and access holes for DSS status
panel (g. 1
N, p. 2). Drill wiring access hole, then fasten panel bracket to wall.
4. Route ush handle cable (g. 1
O, p. 2) from ush handle cable on control module (g. 1 F,
p. 2) to toilet location, and route ethernet cable (g. 1E, p. 2) to DSS status panel location.
(If using status panel other than Dometic DSS panel, route orange connector end of Dometic
ush handle cable (g. 1
O, p. 2) through access hole at toilet location. Route other section of
cable through status panel access hole and connect to panel wires. Attach status panel to wall.)
5. Install control module in cool, dry location, then attach Dometic ush switch/status panel cable(s)
to control module (g. 18 ).
6. With electrical power off, complete wiring connections to control module. Refer to wiring diagram
printed with parts list (packed separately).
7. Route 4-wire control module cable (g. 1
D, p. 2) to toilet through access hole.
8. Route water supply and discharge plumbing to toilet according to system requirements (Section
4.2). Make sure to provide extra discharge hose length to assure easy connection to toilet
(g. 19 ).
9. Follow steps 11-13 in Section 5.3 to connect discharge plumbing and 4-pin connector at toilet.
10. Connect 3-pin ush handle cable connector to 3-pin wire from control module (g. 20 ).
11. Follow steps 14-17 from Section 5.3 to nish installation and testing. Press ush handle down
when testing operation and checking connections.
18 20 19

11
Dometic 8700 Series MasterFlush Toilet Installation
5.5 Toilet system with through-the-wall
connections
1. To route wiring and plumbing connections through the wall, use
oor template to locate the vertical centerline of each hole.
2. Place toilet in proper position and mark horizontal centerlines
(g. 21 ).
3. Drill holes sizes as indicated on template.
4. Route wiring and plumbing through holes, then follow toilet
installation instructions beginning at Section 5.3 or Section 5.4,
step 4.
21
6 RV installation appendix
CONVERSION TABLE
Wire – AWG to mm2Feet to Meters
AWG 14 12 10 Ft 10 15 20 30 50
mm22.5 4.0 6.0 M3.1 4.6 6.1 9.2 15.2
Wire size per length of run* 0-15 ft. 16-30 ft. 31-50 ft.
12 volts DC #14 #12 #10
* Distance from circuit breaker to electronic control module.
WIRE SIZING CHART
When installing a Dometic macerator toilet in a recreation vehicle, please use the following wiring
information.
Installation notes
• Each toilet must have its own circuit breaker or fuse.
• Wire sizes must be appropriate for the installation. All other installation factors must be in accordance
with ISO electrical standards.
• Always use stranded copper wire (preferably tinned).
• Always use crimp-type wire connections. Do not use wire nuts (they corrode).
Warning!
Hazard of Shock or Fire: Always use recommended fuse, circuit breaker and wire size.
Failure to do so can cause the loss of property and life.
Wiring / Electronic Control Module Connections

12
Dometic 8700 Series MasterFlush Toilet
There is a strong, worldwide network to assist
in servicing and maintaining your sanitation
system. For the Authorized Service Center near
you, please call from 8:00 a.m. to 5:00 p.m. (ET)
Monday through Friday.
You may also contact or have your local
dealer contact the Parts Distributor nearest
you for quick response to your replacement
parts needs. They carry a complete inventory
for the Dometic product line.
Telephone: [phone] U.S.A. and Canada
330-439-5550 International
Fax: [phone] U.S.A. and Canada
330-439-5567 International
Web site: Dometic.com
7 Customer service
Dometic Corporation, Sanitation Division
13128 State Rt. 226, P.O. Box 38
Big Prairie, OH 44611 USA
1-800-321-9886 • Fax: [phone]
www.Dometic.com
REVISION B
Form No. 600347077 1/18
©2018 Dometic Corporation