HTS-VG, HTS-T, HTS-Basic Series Holding Tanks
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Waste Holding Tank |
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Installation manual |
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1
Caution!
This manual must be read and understood before installation, adjustment, service or maintenance is performed.. Modification of this product can result in property damage..
Table of Contents
HTS Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 2. . . . . |
HTS. . . Components. . . . . . . . . . . . . . |
. . . . . . . . . . . . . . . . . . . . . . 6. |
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
3. -. 5. . . . . |
Plumbing. Fittings, Hose and Pipe . |
. . . . . . . . . . . . . . . . . . . . . . 7 |
Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 5. . . . . |
Customer. . . . . . Service . . . . . . . . . . . . |
. . . . . . . . . . . . . . . . . . . . . 8. . |
Winterizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . |
. . 5 |
Warranty . . . . . . . . . . . . . . . . |
. . . . . . . . . . . . . . . . . . 8. . . . . . . . |
HTS Benefits
Superior Durability: Dometic® holding tank systems (HTS) are molded from linear low density polyethylene (LLDP) resin.. Polyethylene is best-suited for holding tank construction because of its resistance to corrosion and odor permeation, and it will last longer than the life of a typical fiberglass hull..
Leak-Proof Design: All hose connections in Dometic holding tanks are on the top of the tank, eliminating possibility of leakage due to a faulty connection below the liquid level of the tank contents.. Our unique diptube design reduces the risk of plugging while keeping the residual contents in the tank to a minimum..
Typical |
Diptube |
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Discharge Outlet |
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Discharge Outlet |
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amount of residual effluent |
amount of residual effluent |
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ISO/USCG Compliant: Dometic HTS models are fully compliant with the ISO 8099:2000(E) standard and applicable requirements of the United States Coast Guard for pleasure craft installation..
Odor-Free Design: Dometic tanks have extra-heavy wall thickness to prevent odor permeation.. Holding tank systems can be fitted with a SaniGard™ in-line vent filter that stops unpleasant odors from escaping through the holding tank vent..
Implosion Protection: Dometic holding tanks are equipped with a TankSaver vacuum relief valve which prevents damage from dockside pumps that operate at very high levels of vacuum.. The TankSaver valve opens automatically under vacuum conditions, but remains sealed regardless of shock-loading or vibration..
Multiple Tank Outlets: Most HTS models are equipped with two discharge outlets.. One is for connection to a deck-mounted discharge fitting and one is for connection to an overboard discharge pump..
HTS Components: Every HTS is built with high-quality Dometic sanitation system components.. See page 6 for details..
HTS with Vacuum Generator, Discharge Pump |
HTS with Basic Fittings |
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DECK |
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DECK |
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DISCHARGE |
DISCHARGE |
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TANK |
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TANK |
MONITOR |
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MONITOR |
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VENT FILTER |
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DISCHARGE |
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VENT FITTING |
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PUMP |
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VENT FITTING |
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DISCHARGE |
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PUMP |
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VENT FILTER |
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HOLDING TANK |
SEACOCK |
SEACOCK |
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HOLDING TANK |
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Dometic Corporation reserves the right to change specifications without notice.
2
Installation
CHOOSING A LOCATION FOR THE HTS
As a general rule, the HTS should be positioned as low in the hull as possible with all interconnecting hoses or pipes sloped to permit gravity drainage and prevent potential hose odor permeation..
The holding tank must not be exposed to temperatures above 120°F (45°C).. Do not place near heat sources such as engine manifolds, water heaters, generators, etc..
Be certain to estimate holding tank weight when filled (typical effluent weighs about 9 lbs.. per 1 gallon or 1..08 Kg per liter).. Make certain to allow for total filled weight when selecting materials for mounting the tank.. Also consider impact of full tank on vessel trim..
Preparing a Mounting Surface |
Integrated mounting feet |
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in holding tank simplify |
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1. |
Mount tank to surface that supports the entire area of the |
installation. |
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tank.. |
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2. |
If required, fabricate mounting surface and toe blocks from |
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13 mm or 19 mm (1/2-inch or 3/4-inch) plywood.. |
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3. |
Do not mount tank on projections such as screw or bolt |
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heads, which could puncture the tank.. |
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4. |
Do not allow holding tank to block free flow of bilge water.. |
Mounting surface can be |
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made from plywood and |
securing straps.
AVOIDING HOSE ODOR PERMEATION
•Hose failure due to odor permeation almost always occurs in hose runs which retain sewage when the system is not in use..
•Eliminate all unnecessary runs which retain trapped liquids, if possible..
•Where possible, use rigid PVC pipe in sections that
cannot be arranged to drain.. |
Complicated plumbing layout |
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•Simplify hose layout by removing unnecessary valves.. [For specific installations, some regulations and standards may require the installation of a vented loop (anti-siphon valve), one-way valve or seacock in sewage discharge piping..]
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Simplified plumbing layout |
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HTS / VACUUM GENERATOR CONNECTIONS |
BASIC HTS CONNECTIONS |
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TankSaver |
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Vent line |
Vent filter |
vacuum relief |
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Outlet to deck |
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valve |
Inspection port |
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discharge fitting |
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Outlet to |
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Tank |
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through-hull |
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level indicators |
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Inlet from toilet or |
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discharge |
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fitting |
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Outlet to |
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vacuum generator |
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dockside |
Outlet to |
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discharge |
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through-hull |
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fitting |
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discharge |
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pump |
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Discharge |
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TankSaver |
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pump |
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vacuum relief valve |
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Vacuum |
Inlet from |
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generator |
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Vent line |
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toilet |
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