Reference:
- Plumbing - Hot and Cold Water
- Basement - Underfloor Plan
- Electrical Design - Everything 12 And 120 Volts
- Humble Road Water Tank Install YouTube
- Water Tank Gauge
Document scope:
- 30-gallon water tank
- Tank frame
- Water tank nominal heater, 12 volts dc
- Water pump, 12 volts dc + switch
- Hot water heater, 110 volts ac + switch
- Hot & cold water lines to sink and shower
- Fill-tube, 24 mm ID, 31.5 OD (1.25")
- Drain-tube, threaded 16 mm ID
Mounting bracket parts
- 1 in wide u-bar, 20 in long, four parts
- Heavy duty rivet nuts and bolts, eight parts
- Threaded steel dowel, 16 in Long, four parts
- Matching washers nuts, eight parts
- Loctite or nylocks
- Half inch ID air return line
- 30 mm inside diameter water fill line
Tank dimensions: 443mm x 305mm x 875mm
The long dimension requires an additional 55 mm connection. The connections are at a minimum of 18mm from the edge of the tank.
A support bracket to be made from 18mm stainless steel angle iron protruding 30mm from each corner for threaded support dowels. The dowels will thread into rivet nuts in the floorboard on one end and a locknut and washer on the other end. For additional support, a 30mm stainless flat bar will cross the center and protrude 30mm from each side for a total of 6 support points. The angle iron and flat bar will be welded for structural strength.
Holding Tank Heater Pad
Facon 7-1/4"x25" RV Water Holding Tank Heater Pad, 12Volts DC Steps Heating Pad, for RV Motorhome Camper Trailer Boat with Automatic Thermostat Control, Up to 50 Gallons Tank
[4.4 out of 5 stars 254 ratings
Price: $39.99 & FREE Returns
May be available at a lower price from other sellers, potentially without free Prime shipping.
- [Exclusive Technology] Facon’s world-famous Tank Heater Pads. Heater Pads are Designed and Engineered to protect RV holding tanks, pipes and steps from freezing. Winter convenience of Today’s RV’er. Provides water for RV, Camper, Trailer, Mobile home, Boat, Marine in winter. We own the Patent and Certificate for this Products. Genesis Lighting is the only manufacturer for this product.
- [Thermostat Controlled] Simply turn “ON” the power switch when the outside temperature is near to freezing. Built-in Thermostat is Set to Turn Itself on at 45°F( + - 5 degrees) and Turn Itself off at 68°F( + - 5 degrees). Turn “OFF” the switch when the outside temperature remains above freezing, fluids have been vacated, or Summer is coming, or RV is not in use. If your RV don’t have individual switch for Water Tank System, please order a switch in our store.
- [Application] Pad size L 25’’ x W 7-1/4’’ works efficiently up to 50 gallon holding tanks, such as Fresh Water Tanks, Grey Water Tanks and Black Water Tanks. Please stick 2-3 pads to your tank if it larger than 50 gallon. This size is suitable to use for steps heater pads, melt the snow to prevent it from freezing and slipping.
- [Easy Installation] 2-Wires Design without plug - Convenience for fixed place installation. Just wire this pad to 12Volt DC power supply and RV power switch. Red Wire=Positive (+); White Wire=Negative (-). 3mm Foam Insulation Pad with self-adhesive make it easy installation, no extra facility required. Please make sure the voltage for your RV is 12 Volts DC. Please order another size 8’’ x 25’’ pad in our store if your RV Voltage is 120 Volts AC.
- [High Quality Warranty] Passed US Standard QAI Quality Certification. We take full Responsibility for our products and customer dissatisfaction. One Year Warranty GUARANTEE!
This guy installed a 22 gallon tank for grey water at a cost of about $700.
Another good example
Water tank brackets
From Humble Road YouTube
