SeaLand VHT 4500 Holding Tank - 140 Series VacuFlush Toilet User Manual

Page 3

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System Features .........................................1

System Specifications ................................1

Product Specifications, Dimensions ............ 2

Warnings ....................................................3

Toilet System Components ..........................4

Installation ..............................................5 - 8

Before Operation .........................................9

System Start-Up ..........................................9

Toilet Operation ...........................................9

Holding Tank Pump-out .............................10

WaRninGs

SeaLand vacuum toilet systems must be installed

according to Dometic’s recommended proce-

dures. Dometic also recommends that a qualified

marine technician or electrician install or service

this product. Equipment damage, injury to person-

nel or death could result from improper installa-

tion. DOMETIC SANITATION CORPORATION

ACCEPTS NO RESPONSIBILITY OR LIABILITY

FOR DAMAGE TO EQUIPMENT, OR INJURY OR

DEATH TO PERSONNEL THAT MAY RESULT

FROM IMPROPER INSTALLATION, SERVICE

OR OPERATION OF THIS PRODUCT.

WaRninG!

haZaRD oF FlooDinG – If the toilet

system is connected to ANY through-the-hull

fittings, properly installed seacocks MUST be in-

stalled in all piping connected to through-the-hull

fittings. Seacocks MUST be easily accessible to

all users of the toilet system or secondary valves

fitted in hoses where they are easily accessible.

ALWAYS close seacocks when toilet system is

not in use (even if boat is unattended for a brief

period. All valves MUST be full bore valves and

marine quality. Screw-to-close gate valves are

not recommended. Failure to comply can result

in flooding which can cause loss of property

and life.

WaRninG!

haZaRD oF FlooDinG – If toilet is

connected to ANY through-the-hull fittings, ALL

flexible hoses must be of marine sanitation qual-

ity and must be secured to ANY fittings (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 flooding which can cause loss of property

and life.

WaRninG!

haZaRD oF FlooDinG – If toilet rim is

below the waterline at ANY time (during any con-

ditions of heel, load or trim) and is connected to

ANY through-the-hull fittings, 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 flooding which can cause

loss of property and life.

* if connected to raw water

WaRninG!

haZaRD oF FlooDinG – If the toilet

uses fresh water for flushing and is connected

directly or indirectly to a shoreside municipal

water system at ANY time, shoreside water con-

nections MUST be disconnected if the boat is

unattended (even for a brief period). Failure to

comply can result in flooding which can cause

loss of property and life.

WaRninG!

haZaRD oF FlooDinG – If toilet uses

raw water for flushing at ANY time, a raw water

pump controlled by an automatically 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 flood the boat. Failure to

comply can cause loss of property and life.

WaRninG!

haZaRD oF FlooDinG – Before be-

ginning any work on this product, be sure that all

electrical power to the unit has been turned off.

Failure to do so can result in flooding which can

cause loss of property and life.

WaRninG!

haZaRD oF shocK oR FiRE

Always use recommended fuse, circuit breaker

and wire size. Failure to do so can result in fire

that can cause the loss of property and life.

cauTion: Overfilling the holding tank

can create serious damage to the sanita-

tion system, such as rupturing the holding tank

and releasing tank contents into the bilge. To help

prevent this possibility, the VHT4500 includes a

“full” tank safety shut-down relay to the vacuum

pump. The “full” signal is generated by a built-in

tank level probe.

TablE oF conTEnTs

Proper Bowl Cleaning ...............................10

Clearing Discharge Lines .......................... 11

Winterizing ................................................. 11

Maintaining the System ............................. 11

Deodorants and Special Tissue ................12

Marine Sanitation Regulations...................12

Troubleshooting ..................................13 - 15

Toilet Model Identification ..........................15

Ordering Parts ...........................................15

Customer Service and Warranty ...............16

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