Dometic DTM04 Mode D'emploi page 10

Installation
6.3 Probe Cap
Caution!
Do not install probe cap in fuel tank. Never install Dometic probe cap with float switches
into a tank that contains anything other than waste water, grey water or fresh water .
1 . Loosen compression nuts on adjustable probes and install probe cap into tank . Following
numbers printed on top of probe cap, slide the "1" probe (fig . 3 B 4, page 3) down until the
float touches the bottom of the tank . Tighten "1" compression nut and mark the probe tube at
the top of the nut . Do not cut the probe tube at this mark . Loosen the compression nut, slide
the probe up, and carefully cut the "1" probe tube 42 mm (1 .625 inches) below the mark without
damaging the wires inside the tube . Pull the wires through the black wire cover and push the
probe down into the compression nut until the black wire cover touches the compression nut .
The recessed shoulder of the float, or the letters "NO", should be facing down (B 5) .
2 . Remove probe cap from tank and adjust the "2" probe (fig . 3 B 6, page 3) for one-half full level
for black or gray water tanks . Tighten the compression nut and cut the probe tube off 10 mm
(0 .375 inch) above the compression nut without damaging the wires . Slip the black wire cover
onto the top of the tube . The recessed shoulder of the float, or the letters "NO", should be facing
up (B 7) .
3 . Route 18-gauge stranded copper wires from monitor panel and DC ground source to the probe
cap . Use quick-disconnect terminals on float switch wires to prevent twisting wires when remov-
ing the cap . With cap removed from tank, connect the wires according to the wiring diagram
(fig . 4 , page 3), turn on electrical power to system, and test the floats by moving them up and
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down and monitoring the DTM04 panel . Disconnect the wires and install the probe cap and O-
ring into the tank . Reconnect the wires .
6.4 Key to DTM04 system wiring
Ref. Description
A DTM04 indicator panel
B Wastewater tank
C 12 V DC
D 24 V DC
E V DC ground
F 1-amp circuit breaker or fuse
G Red
H Blue
I Black
J Green
K Yellow
L Orange
M Full level probe
Caution!
Operator must know local regulations for emptying a holding tank.
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(fig . 3 B, page 2) 3
(fig . 4 , page 3)
Dometic Tank Monitor System
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4
Ref. Description
N Mid level probe
O Low/Empty level probe
P 12 or 24 V DC
Q Toilet system circuit breaker or fuse
R + V DC to electric toilet system
S + V DC to "full tank" monitor (optional)
Notes:
1 . Heavy line indicates 14 gauge or larger stranded
copper wire is required .
2 . Other wire can be 18 gauge stranded copper wire
or larger .
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