Heat Siphon PLUMBING

DIRECT GLUE TO 1.5 " or 2" SCHEDULE 40 PVC

DO NOT USE A BYPASS
Heat Siphon Requires FULL FLOW to 80 GPM

HEAT SIPHON LOCATION: In the pool pump discharge (return) line
• DOWNSTREAM of your pool or spa pump and filter (no matter what type)
• UPSTREAM of poo/spal chlorinators, ozone generator or chemical pumps
• NOT IN SAME PLUMBING LOOP AS ANY INFLOOR CLEANING SYSTEM

Pool Spa Combo Plumbing Schematics Multiple Unit Plumbing Example

Heat Siphon Pool Plumbing

Heat Siphon's exclusive full flow titanium heat exchanger requires no special plumbing arrangements or bypass.The water pressure drop is less than 1 1/2 psi at 80 GPM.

Since there is no residual heat or flame temperatures, Heat Siphon does not need copper heat sink piping. PVC pipe can be run straight into the unit.

Heat Siphon's Heat Exchanger is ALL PVC and allows you to connect to EITHER 1.5 or 2 inch Schedule 40 PVC pipe pool or spa filtration piping.

Both inlet and outlet water connections have a 1.5 inch Inside Diameter for slip (glue) fitting to 1.5 inch pipe and 2 inch male pipe threads on the Outside Diameter to allow connection to 2 inch sch 40 pipe by using a 2" schedule 40 female adapter sleeve or coupler. Both maintain the pipe inside opening all the way into the heat exchanger to eliminate any pressure drop.

Give serious consideration to adding quick coupler fittings at the unit inlet and outlet to allow easy draining of unit for winterizing and to provide easier access should servicing be required.

NOTE: NOT COMPATIBLE WITH IN FLOOR CLEANING SYSTEM

Do not install any Heat Siphon in the same pump or plumbing loop as any IN FLOOR CLEANING SYSTEMS. Doing so will void your warranty. Water hammer damage has know to occur when plumbed in the same loop. Especially with a larger pump and 2 inch or larger pipng.

Use a separate pump and plumbing loop for all in floor cleaning systems - they should be independent of the heating piping.

 

Multiple Unit Plumbing

The only thing different about installing ONE Heat Siphon vs. MANY Heat Siphons on ONE POOL is PLUMBING. Each Heat Siphon still requires its own dedicated circuit breaker and all of the rules about location and bonding and wiring one Heat Siphon applies to ALL.

There are just four rules for plumbing multiple Heat Siphons:

1. MAKE SURE EACH HEAT SIPHON GETS at least 30 up to 80 GPM of water flow.
2. PLUMB THEM IN PARALLEL - Don't connect the outlet of any Heat Siphon to the inlet of any Heat Siphon.
3. MAKE EACH CIRCUIT the same length of water travel. This will naturally help balance the flow rate to each unit.
4. Where possible put a set of shutoff valves and a flow meter at each unit to facilitate service without shutting down the system as well as comfirming /balancing the flow rate to each Heat Siphon.

Following these rules is simple for TWO unit systems but becomes somewhat more complex as the number of units grows. It is still easy if you remember to BALANCE EACH CIRCUIT. That is make the distance the water travels the same for every Heat Siphon from the branch off pipe header back to the collection pipe header

For example, one of the larger multiple unit installations which is now over ten years old is a community pool in Cranberry Township , PA which has twelve Heat Siphons. The water line supply and return headers are 6" diameter schedule 40 PVC and this branches down to three 4" diameter feeders that supply each of three banks of four Heat Siphons. Each single Heat Siphon inlet and outlet uses 1.5" diameter PVC pipe. The return trip is the same in reverse.

PLEASE CALL US IF YOU NEED HELP ON MULTIPLE UNIT PLUMBING

More Helpful Hints:

NO BYPASS OR CHECK VALVES

Plumb Heat Siphon just like a piece of PVC PIPE. No bypass is required.

Location:

Connect Heat Siphon in the pool pump discharge (return) line DOWNSTREAM of all filter and pool pumps, and UPSTREAM of any chlorinators, ozone generator or chemical pumps.

Condensation:

Since your Heat Siphon cools down the air about 4 -10° F, water may condense on the fins of the horseshoe shaped evaporator. If the relative humidity is very high, this could be as much as several gallons an hour.

The water will run down the fins into the base pan and drain out through the barbed plastic condensation drain fitting on the right side of the base pan

This fitting is designed to accept 3/4" clear vinyl tubing which can be pushed on by hand and run to a suitable drain.

Many people have mistaken the condensation for a water leak inside the Heat Siphon.

TIP: A QUICK WAY TO VERIFY THAT WATER COMING FROM THE BASEPAN IS CONDENSATION and not a plumbing leak - TEST THE DRAIN WATER FOR CHLORINE - if no chlorine is present, then it's condensation.

Twelve Units

Location: Cranberry Twp Community Pool, Cranberry, Pennsylvania approximately 20 miles north of Pittsburgh.

This photo of the twelve unit installation appeared in an article in the September 1997 Issue of Pool & Spa News Magazine and in the September issue of Swimming Pool & Spa Age, both international trade journals for the pool and spa industry.