SeaLand DHT-L Series Holding Tank User Manual
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Hose Installation
Dometic Holding Tanks
• Vent fitting on Dometic holding tank will accom-
modate 16 mm ID vent hose .
• Install a Dometic vent filter in the vent line to
absorb malodorous gases, letting only freshened
air out of the vent .
Item
Description
1
Vent hose
2
Vent filter
3
Holding tank
Note
Vent line must not have any low runs that
can create a liquid trap .
Vent Hose (fig. 9 , page 5)
9
Do not restrict the ability to pull the hose or pipe (fig. 10 A, page 6).
Avoid binding corners and sharp bends ( fig. 10 B, page 6).
Do not use wire ties to secure hose or pipe . Support flexible hose every 0 .3 m (12 inches) and
support rigid pipe every 1 .5 m (5 feet) .
Where possible use a support trough under the hose or pipe (fig . 10 C, page 6) .
Bulkhead Penetrations (fig. 11 , page 6)
Check each side of a bulkhead to ensure that there will be no cutting into:
• fuel or water tanks
• wiring or pipes
• reinforcement stringers (4) that support the hull
When creating new holes, avoid tabs (1) and stringers (4) that hold bulkheads or partitions in place .
Provide additional reinforcement so that structural integrity is not compromised .
• avoid (2)
• possible (3)
Hose and Heat Sources
The operating temperature of flexible hose prohibits exposure to sources of high or direct heat, such
as light bulbs or engine manifolds . If any part of the hose system must be run close to a heat source,
use rigid pipe instead of hose .
When connecting flexible hose to plastic fittings (fig . 12 , page 7), use special hose lubricant which is
supplied with the Dometic holding tank. Apply lubricant around end of fitting and inside end of hose
that connects to fitting . The Dometic lubricant makes connections easier . Do not use any other
lubricant, sealant or adhesive .
Hose Clamps (fig. 13 , page 7)
Each hose connection should be secured with two hose clamps to prevent possibility of leaks .
Position the clamp screws 180° apart from each other and tighten the clamp . Do not over-tighten
clamps or they may cut into the hose . If over-tightening is the only way to stop a leak, the hose-
to-fitting connection is not sized correctly, and an adapter or different size fitting is required .
6.3
Recommended hose installation methods
6.4
Connecting hose to plastic fittings
10
12
10
10
11
13