HEAT PUMP SWIMMING POOL HEATERS

Flow Check Valve

This is concerned with the installation of heat pumps below the pool water level. The heat pump operates on a pressure switch that activates the unit when the pool pump is switched on.

If the heat pump is installed more than 1.5 metres below the pool water level, the weight of the water keeps the pressure switch activated and the heat pump running - even when the pool pump is switched off.

In this situation, to prevent the heat pump running when the pool pump is switched off, a flow check valve must be installed in-line with the pressure switch.

The procedure on the following pages should be carried out: (This installation was carried out on a 105 three phase model, but the same procedure applies to all models)

Installation Above Water Level

For installations where the heat pump is installed above water level, installers must ensure that sufficient water flow is diverted to the heat pump. Flow is detected by the pressure switch. If the volume of water passing through the heat pump is insufficient, the pressure switch will not activate and will not turn on the unit.

Bypass

A bypass must be installed with all heat pumps. This will allow the user to control the water flow through the unit, as well disconnecting it easily for servicing.

Three Phase Connections

When installing the three phase heat pumps, the electrician must ensure at all times that the connections are done according to the tags placed on the wires. The wiring is tagged: L1, L2, L3, and N.

L1

L2

L3

N

SUPPLY ( AUS / NZ )

Blue

Red

White

Black

HEAT PUMP ( US / CANADA )

L1

L2

L3

N

Orange

Red

Black

White

It is essential that the electrician installing three phase heat pumps is present when the units are started up for the first time.

Wrongly connected heat pumps are indicated by the compressor running backwards, and making excessive noise after the 3 minute time delay. This can damage the compressor if it is left to run.

If this occurs, the unit should be turned off immediately, and the wiring should be changed by swapping any two

(2) phases to fix the problem - one phase needs to stay in the same position.

This is necessary as certain households/ properties may have three phase power supplies that are not wired to

Australian standards.

Heat Pump Swimming Pool Heaters

I pg 09

Electrical

IMPORTANT

To ensure your safety and ensure the adequate functioning of your heat pump,

all electrical work should be performed by a fully qualified and licensed electrician in accordance with local electrical codes.

An adequate and dedicated circuit breaker and copper wiring must be used. Refer to the electrical installation diagram found on the inside of the access panel. It may be necessary to install a ground circuit breaker.

!

WARNING

THE UNIT MUST BE DISCONNECTED BEFORE

OPENING THE ACCESS PANEL.

Electrical Connection

Standard power supply : 208/240 v - 60hz-1 phase

Optional power supply : 208/240 v - 50hz-1 phase

380/420 v - 50/60 hz - 3 phase

200/230 v - 50/60hz - 3 phase

MODELS

-

-

-

-

-

-

-

-

-

POWER

SUPPLY

220 / 1

220 / 1

220 / 1

220 / 1 - 380 / 3

220 / 1 - 380 / 3

220 / 1 - 380 / 3

220 / 1 - 380 / 3

220 / 1 - 380 / 3

220 / 1 - 380 / 3

BREAKER

(Amps)

20

20

20

30 - 15

30 - 15

40 - 15

40 - 20

50 - 30

50 - 30

Running

(Amps)

6.5

9.5

11

14 - 60

16 - 7.5

18 - 80

27 - 13

33 - 15

34 - 19

* ELECTRIC WIRE SIZE mm

2

(A WG)

4 (12)

4 (12)

4 (12)

5,3 (10) - 2,1 (14)

6 (10) - 2,5 (14)

10 (8) - 4 (12)

10 (8) - 4 (12)

16 (6) - 6 (10)

16 (6) - 10 (8)

!

WARNING

The power cable ground must be connected to the electrical panel and to the ground lug of the heat pump. An improper incorrect installation may be a potential cause of fire, electrical shock or injury.

GETTING TO KNOW YOUR POOL HEATER

Operation of Square Electronic Control

Heat Pump Swimming Pool Heaters

I pg 11

Bonding

!

VITAL

Because all metals have different electrical potentials, ALL metal and electrical components of the pool system

MUST be bonded together. This includes the metal framework of the pool, the light, the pump, the filter (if metal), the heater, any automatic chlorine generator, and any other metal or electrical equipment.

On some older pools, this substructure bond wire may not exist. In these cases, a 0.9 - 1.2m solid copper rod must be driven into the ground near the equipment, all electric equipment and metal components must be bonded to each other and to the copper rod. Warranty will be void if system is not properly bonded.

Bonding Diagram

!

VITAL

Pool House

Breaker Box

Chlorine

Generator

Power Supply and Grounding

Wires Conduits

Heat Pump

Bonding Wires

pe op

C m od r R

.2

- 1

9

0.

If Metal Filter

Pool

Bond ing W ire

Light

Pool Pump

If Pool Bonding Wire does not exist, then a 0.9 - 1.2m Copper Rod must be driven into the ground and equipment bonded to it.

˚C ˚F

˚C/ ˚F

ON/OFF

Digital Control Panel

The digital display, electronic temperature control always displays the water temperature setting. To power on the temperature control, press the ON/OFF button.

To modify the desired water temperature, simultaneously press on the TEMP SET control arrows on the keypad for approximately 3 seconds, or until the temperature display flashes. The arrows will raise (up arrow) or lower

(down arrow) the temperature setting. Once the display no longer flashes, the desired temperature is now set. To change the temperature display mode, press on the ˚C/ ˚F button.

Temperature Differential

It is possible for a temperature variation to occur between the probe and the pool thermostat measurement, due the quality of the pool thermostat .i.e., the value displayed is different from the temperature displayed on the pool thermometer. Example: if the water is at 26˚C and the heat pump displays 24˚C.

To calibrate this variation, perform the following procedure;

Read the pool water temperature (ex: 26.6˚C),

Now read the temperature displayed on the heat pump thermostat (24˚C),

To determine the differential subtract the pool water temperature from the heat pump temperature,

26 (80) -24 (76) = 2˚C. Therefore we must compensate for 2˚C.

To calibrate the probe perform the following procedure;

Enter the digital programming mode by simultaneously pressing on the up and down arrows,

Once the temperature displayed is flashing press on the ON/OFF button,

The display will now show the calibration value, which varies -4˚C,

Using the up and down arrows, enter the calibration value, 2˚C. The degree function will flash for negative values and will not flash for positive values.

Once the calibration has been entered wait until the new temperature appears.

To Start-Up the unit

When the unit is turned on or after a power shut down, the panel lights up and either indicates OFF or the temperature of the pool water circulating inside the heater. Program in the desired pool water temperature.

Once programmed the fan starts and the compressor starts after a 3 to 5 minute delay.

NOTE: The fan motor and the compressor will start at the same time when the unit has been stopped for a lond period.

To Start the unit

The unit can be stopped by switching off the electrical power supply or by programming the desired water temperature below the actual pool water temperature.

Heat Pump Swimming Pool Heaters

I pg 13

Initial Heating

The speed of heating is dependent upon five basic factors:

1. Size of the pool.

2. How many degrees the water is to be heated.

3. Ambient air temperature - the warmer the air the less time is required to heat.

4. Use of a solar blanket (see the following section).

5. The size of the heater.

To achieve initial heating your pool heater and pool pump may work up to 24 hours per day until desired temperature is achieved. The initial heating time may vary depending upon the above five factors. After initial heating, operating time may be reduced to match daily heat loss.

Pool Solar Blanket

A pool solar blanket should be used whenever possible. Blankets minimise heat loss and conserve heat in your pool. Like a jacket holds body heat in on a chilly day, or closed doors and windows hold heat in a home, the blanket controls heat losses. Un-blanketed pools lose 2-3 times more heat than blanketed pools.

Heater Running Time

Most units should be sized to operate during the pool filtering cycle time of 8-12 hours daily, providing an even, steady flow of warm water. On warmer days the heater will run less because the heat loss will be less. Heat pump pool heaters are able to operate 24 hours per day when necessary.

Defrost Cycle

When the ambient air temperature is between 3˚C and 7˚C, or if the evaporator is dirty or clearances are not respected, condensation water on the fins of the evaporator tends to frost. In such a case, the control will activate the defrost cycle until all the frost is gone. A normal defrost cycle (compressor stopped) lasts between 5 and 10 minutes. The pool heater won’t be damaged if it is running at less than 7˚C. In these conditions, the unit will have more frequent defrosting cycles.

Protection Devices

The integrity and performance of your pool heater and its components is protected by controls. In normal use, the

Waterco unit should never reach the thermal protection level. However, should it happen, you should verify your operating conditions as described below.

The Waterco unit is designed to operate with a minimum water circulation of 113lpm. The high pressure switch will shut off the compressor if there is not sufficient water flow through the unit. Check for dirty filters, clogged skimmers or the bypass valve position. They are usually the cause of this condition.

The Waterco unit also has a built-in water pressure switch that will interrupt the operation of your unit should water circulation through the unit stop. If there is still a demand for heat, turn on your pool pump and the heater will start up once the normal water flow is re-established.

Your heat pump pool heater features other protection devices that could stop the unit:

High pressure cut-out switch,

Low pressure cut-out switch,

Thermal protection for the compressor and the fan motor

Adjustment of the bypass valves

The adjustment may vary according to the pool pump size and the climatic conditions.

IN

HEATER

OUT

IN

HEATER

OUT

IN

HEATER

OUT

OPEN OPEN CLOSED

Cold Water

Approximately 60% of the water is circulating in the unit.

Warm Water

Approximately 80% of the water is circulating in the unit.

Hot Water

100% of the water is circulating in the unit.

Heat Pump Swimming Pool Heaters

I pg 15

CARING FOR YOUR POOL HEATER

The Waterco pool heater has been specifically engineered to give you many years of satisfaction. To clean the plastic surfaces use soapy water and a clean soft cloth. Never use solvents or abrasives.

The dirt collected in the evaporators can be removed with a gentle water spray and the use of a soft brush. Be careful not to damage the aluminum fins. Do not use a pressure washer to clean the evaporator as it can damage the fins.

Usage Of Chemical Products

IMPORTANT

Adequate water circulation and the proper use of chemical products is absolutely necessary to protect your family’s health and your pool heater.

The following are essential water quality readings and must be maintained at all times.

DESCRIPTION

PH Level

Chlorine Concentration

Total Alkalinity

Total Dissolved Solids

Calcium Hardness

NORMAL RANGE*

7.4 to 7.8

1.0 to 4.0 PPM

100 to 120 PPM below 1800 PPM Reg. Pool below 3500 PPM Salt. Pool

200 to 300 PPM

VERIFY

1 / week

1 / 2-3 days

1 / 2-3 weeks

1 / month

1 / month

1 / month

Winterising

!

VITAL

Set the water temperature setting to OFF. Turn the pool heater breaker OFF. If the unit is stored in a place where the temperature drops below the freezing point of 0˚C,

it is mandatory that the water accumulated in the unit

be drained completely before freezing weather prevails. The water piping MUST be disconnected to drain the heat exchanger in preparation for winter. Once the piping is disconnected, the unit

MUST be drained of all its water by tipping it (75˚). It is recommended to flush the inside of the heat exchanger with the garden hose and to drain the unit again. Using 2 pool return caps, block the water in and water out to prevent any intrusion.

Do Not

leave the water piping connected to the heater over the winter.

DO NOT put anything under the water connect ions of the unit to lift it up. This can keep water inside the heater and cause freezing damages.

Unit may be covered for the winter. The use of a material that will allow air to go inside the heater is recommended.

It is also possible to fill the heat exchanger with pool anti-freeze only, but ensure that the anti-freeze contains an elevated pH to prevent corrosion. This is optional and requires appropriate hardware.

How To Protect Your Pool Heater

This Flow Chart will teach you the steps t o follow to p rotect y our heater as well as your family by maintaining a corrosion free pool.

INSTALLATION

- Verify that the installation was done according to owners’ manual instructions.

FIRST TIME OR SPRING STARTUP

- Hook up pool water piping but do not hook up to the Heater yet.

VERIFY & BALANCE POOL CHEMICALS

HEATER HEATER

IN

OUT

IN

OUT

CLOSED OPEN

Water directed to Pool

Water goes to heater

IMPORTANT

When heating is not required for less than a week you MUST leave the

Bypass valves open

(See Fig.1) to let the water circulate in the unit. If the heat exchanger is deprived of water circulation for more than 24 hours, high chlorine gas could cause excessive corrosion.

No

POOL CHEMICALS OK?

Yes

HOOK UP WATER PIPING TO HEATER

SET REQUIRED WATER

TEMPERATURE ON TOUCH PAD

IMPORTANT FOR THE HEALTH OF YOUR FAMILY AND

FOR YOUR POOL HEATER

- Verify Chlorine or Bromine level every 2-3 da ys.

- Verify PH level once a week.

- Verify Alkalinity level every 3-4 weeks (More often if you ow n

an Automatic Chlorine or Bromine Feeder.) (Above tests can

easily be done by yourself with a do it yourself kit).

- Verify Hardness and Total Dissolved Solids (TDS) once a

month (Above tests must be done by your dealer).

No

HEATING WILL NOT BE REQUIRED

FOR MORE THAN A WEEK?

Yes

Shut Bypass valves and disconnect water lines to drain the HEATER.

WATER QUALITY STANDARDS

TO STRICTLY ADHERE TO

PH

CHLORINE CONCENTRATION

TOTAL ALKALINITY

TOTAL DISSOLVED SOLIDS

CALCIUM HARDNESS

7.4 to 7.8

1.0 to 4.0 PPM

100 to 120 PPM below 1800 Reg. Pool below 3500 Salt Pool

200 to 300

HEATING NEEDED?

No

No

IS IT POOL CLOSING

TIME?

Yes

CLOSE POOL AND WINTERISE

THE HEATER

Yes

Heat Pump Swimming Pool Heaters

I pg 17

TROUBLESHOOTING

The Pool Heater Is Not Running Or Stops Less Than 2 Minutes After

Starting Up

Heat pump control set to low. Raise temperature set point.

Desired water temperature is reached. Unit will automatically re-start when the water temperature goes below the set point.

Main breaker is tripped. Reset it.

Pool pump is not running. Turn the pool pump on.

Filter is dirty restricting the water flow. Backwash and clean filter.

The Compressor Is Running But The Fan Is Not

If the unit was just installed and the compressor starts before you have programmed the desired temperature, it is possible that the electrical hookup was made on the wrong side of the contactor (relay). Contact your electrician.

The fan motor may be defective. Contact Waterco’s service dept.

The Fan Is Running But Not The Compressor

The unit is in its 3 or 5 minutes time delay protection mode.

The unit is on defrost. The compressor will start again automatically a few minutes.

There Is Water Around The Unit

While your Watero pool heater is in the heating mode, a large quantity of warm and humid air passes over the evaporator and causes condensation.

It is normal to see condensation dripping under the heater.

To verify that the water is really a water leak you will need to stop the heater and leave the pool pump running for over 5 hours. If water is still coming out of your heater after this period you should call Waterco for service.