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Save $ with Tank Heaters Answers before you buy FAQ      Easy to retrofit Ducted vs ultraheat

INSTALLATION INSTRUCTIONS:: Pipe Heater

Outside temperature must be at least 50°F (10°C) when applying tank, pipe and elbow heaters.

Please read the entire installation instructions before attempting to install the UltraHeat® Pipe Heaters.

Caution: DO NOT USE ON METALLIC PIPES UltraHeat® Pipe Heaters can only be installed on rigid/hard plastic pipes similar to Pex or PVC. (unless specifically custom ordered for metallic pipes)


1. Prepare the Pipe Surface.

  • Pre-clean the dust, dirt and other foreign matter from the surface where the heater will be applied, using soap and water.  Rinse with clean water and let the pipe surfaces completely dry.
  • Next, clean the surface using only isopropyl alcohol (90% alcohol minimum) with a clean cloth or rag.  Allow the surface to completely dry.  The surface MUST be clean and dry before proceeding to the next step.
  • Select the location on the bottom of the pipe where the pipe heater is to be put and clean surface.
  • For Drain Pipes: Locate the UltraHeat® Pipe Heater or combination of Pipe Heaters that will cover the majority of the exposed drain pipe and leave no more than 2" to 3" (5.08-7.62 cm) spaces between heaters or on the ends of the drain pipe section to be protected.
  • For Fresh Water Supply Pipes: To protect ˝" (1.27 cm) fresh water supply pipe, use one PH-513 Pipe Heater per 12" of pipe. Locate the first PH-513 Pipe Heater near the fresh water tank and leave a maximum of ˝" (1.27 cm) of exposed pipe, then place the second PH-513 Pipe Heater, then repeat as necessary. To enhance the level of freeze protection, it is recommended that insulation be placed over the UltraHeat® pipe heaters.

Caution: Do not use any other type of solvent to clean the pipe surfaces.


2. Put the Pipe Heater onto the Pipe Surface.

  • Peel all the release paper off the back side of the pipe heater exposing the adhesive side of the heater.
  • For Drain Pipes: Place the center of pipe heater on the bottom of the pipe so that the long edges of the heater will align with the length of the drain pipe. Firmly press the heater down so that the entire pipe heater makes contact with the pipe surface. Be careful not to stretch the pipe heater beyond its original size. Do not spiral wrap UltraHeat® Pipe Heaters on drain pipes, the heating element should be on the bottom of the drain pipe so that heat rises into the drain pipe from the bottom.
  • For Single Fresh Water Supply Pipes: Place the center of PH-513 Pipe Heater on the fresh water supply pipe so that the long edges of the pipe heater will align with the length of the pipe, the edges of the heater will slightly overlap. Firmly press the pipe heater down so that the entire pipe heater makes contact with the pipe surface. Be careful not to stretch the pipe heater beyond its original size.

Caution: Do not spiral wrap the PH-513 Pipe Heater on a single fresh water supply pipe.

  • For Double Fresh Water Supply Pipes: Double fresh water supply pipes or any two fresh water supply pipes that run parallel to each other so they are touching. Spiral wrap the PH-513 Pipe Heater around the outside of both fresh water supply pipes so they are bound together. Be careful not to stretch the pipe heater beyond its original size.
  • Press down firmly on all parts of the pipe heater once in place. This will activate the pressure sensitive adhesive on the UltraHeat® Pipe Heater.

Caution: When properly installed the UltraHeat® Pipe Heater will be very difficult to remove without destroying it.


3. Electrical Installation.

Select the Appropriate 13.5 VDC Power Source.

  • It is recommended that UltraHeat®'s DC Heaters be powered from the DC fuse panel of an RV's 13.5 VDC power converter.  Heaters should not be powered directly from the battery.

  • All DC power circuits for UltraHeat® heaters should be dedicated to powering UltraHeat® tank, pipe and elbow heaters only.
  • UltraHeat®'s DC Pipe Heaters can be combined on the same power circuit with UltraHeat® Tank and Elbow Heaters as long as the following conditions are met:

    1. All UltraHeat® heaters must be connected in parallel only. All heater "hot-wire" leads (colored red) must be connected together with the positive wire. All the heater negative wire leads (colored white) must be connected together with the ground wire.
    2. The total current draw of all tank, pipe and elbow heaters to be combined on one DC circuit must be less than 15 Amperes.
Caution: Do not combine UltraHeat® DC  Heaters on power circuits with devices that use electric motors (water pumps, furnace blower motors, etc.)


Install the 13.5 VDC, 15 Ampere fuse or circuit breaker.

  • Each DC power circuit for UltraHeat® heaters must use a 15 Ampere rated fuse or circuit breaker.
  • Install a 15 Ampere fuse in an open fuse slot of the DC fuse panel. If you do not have enough open circuits in your current fuse panel for the number of UltraHeat® Heaters you want to install you can add an external DC fuse panel or an inline fuse connected to the output side of the power converter.

Run Circuit Wire from the Fuse or Circuit Breaker to the 13.5 VDC Power Switch.

  • Each DC power circuit must use a minimum of 14 gage wire in order to comply with National Electrical Code for 15 Ampere rated circuits. It is acceptable to use a larger gage wire (12 AWG, 10 AWG, etc.) for a 15 Ampere rated circuit.
  • Use a female slide connector (sold separately, packaged in UltraHeat® switch kit) to connect the circuit wire from the fuse to the input side of the power switch (also packaged with the UltraHeat® Switch Kit)

Run Circuit Wire from 13.5 VDC Power Switch to the UltraHeat® Pipe Heater Positive Lead.

  • Use a female slide connector (also packaged with the UltraHeat® Switch Kit) to connect the circuit wire to the output side of the DC power switch.
  • Use the crimp cap connectors that were packaged with your Pipe Heater to connect the heater's lead wires. Connect the positive circuit wire coming from the DC power switch to the red positive lead wire on the UltraHeat® Pipe Heater.
  • If larger connectors are necessary to properly connect multiple heater lead wires to the circuit wires, large crimp cap connectors are recommended (not included).

Run Circuit Wire from the UltraHeat® Pipe Heater Negative Lead to Ground.

  • Connect the circuit wire to be used for the ground side or negative return of the circuit using a crimp cap connector to the UltraHeat® Pipe Heater's white negative lead wire. Run the circuit wire back to the RV's DC grounding bar which is normally located near the power converter.
  • It is also acceptable practice to connect the negative circuit wire directly to the RV's frame to use as a ground for the UltraHeat® Pipe Heater. It is recommended that a crimp-on eyelet, a star washer, a bolt and nut or other appropriate hardware be used to attach the negative circuit wire to the RV's frame. Removing a small amount of the paint on the RV's frame where the ground connection will be located will help insure a good ground connection.

Caution: Do not allow high voltage on the 13.5 VDC UltraHeat® Pipe Heater power circuits, this will cause great damage to the pipe heater.