Spec's and Owner's Manual

Spec's and Owner's Manual


Owner's Installation & Operations Manual 
For Hydro Royal Heat Pump










Note from Hydro Royal: 
This Owner's Manual refers simultaneously to Swimming Pool, Spa, and Aquaculture tank applications. If you have any questions please contact Hydro Royal at (888) 205 7766.


Version 2.02


Page 2









Wind Tie Down


Water Plumbing


Electrical Hook Up




Water Chemistry Maintenance


Heat Pump Features


Heat Pump Operation


Control On/Off


Pool/Spa Modes


Changing Set Point Temperature


Heater Running Time


Keypad Lockout


Defrost Cycle


Condensate Draining


Care & Maintenance










Page 3





Congratulations on purchasing the most advanced high efficiency,

microprocessor-controlled pool , spa and Aquaculture heat pump available. Your heat pump has been manufactured with the most state-of-the-art quality control

equipment available today to ensure the highest quality product delivered to

your door. A heat pump water heater is a highly efficient, cost effective

method of water heating. Proper operation and care will result in many years

of worry free heating or cooling depending on the model you chose .

Your new heat pump is a self-contained unit designed specifically for

swimming pool and spa heating and can be used for aquaculture applications 
when installed properly. It utilizes the sun's free energy by

extracting heat from the sun-warmed air and transferring it efficiently to the

pool/tank water. Because your heat pump moves the free heat from the

outside air to the pool/tank, rather than create heat, as a fossil fuel or electric

resistance heater does, it can heat your pool/spa/tank for up to

80% less cost than these other less efficient methods.

As with all water heating methods, you are advised to utilize a cover at

night. The cover should be used if the night temperature is 15°F (8°C) 
less than the desired water temperature.

This will keep evaporation, the greatest source of heat loss, to a minimum,

greatly reducing the overall heating costs. During warmer weather,

the cover may not be required.


Your pool/spa/tank heat pump combines simplicity with trouble-free

performance. As with most appliances, an understanding of proper

operation of the heat pump is important. Proper installation and operation

increases efficiency and reduces operating costs. Your heat pump is

designed with features that make it simple to operate, maintain and service.

Proper installation enhances these features and minimizes problems. This

manual will provide you with the information needed to properly install,

operate and maintain your heat pump.




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Please be sure to complete and mail in the Warranty Registration Card that

is provided in the package with your heater. This card helps us to notify

you about new information on your heater.

Also, please take a moment and jot down the following information. If you

should ever need to call us for service or a question, we will need this


Model Number:___________

Serial Number:___________

Purchase Date:___________

Dealer Name/Address/Phone #:________




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The unit is designed for outdoor installation and shall not be placed in a

totally enclosed area such as a shed or a garage unless ventilation is

provided to ensure adequate air exchange for proper operation.

Recirculation of cold discharge air back into the evaporator coil will greatly

reduce heating capacity and efficiency of the unit and void the compressor


The heat pump should be located as close as practical to the existing pool/tank pump

and filter to minimize water piping length. The use of 90° bends and short

radius elbows in the water piping should be limited to keep water pressure

drop to a minimum.

Your heat pump features an up-flow fan for quiet operation. Air is pulled

through the evaporator coil and discharged through the top grill. At least 4

feet clearance should be allowed above the unit for unrestricted air

discharge. The unit must not be installed under a porch. Any side of the

unit should be located at least 12 inches from a wall or other obstruction for

unrestricted air intake and service access.

Mount the unit on a flat, level surface, preferably a concrete or fabricated

slab. The unit should be completely isolated from the building foundation or

wall to prevent the possibility of sound or vibration transmission into the

building. The base of the unit may be used to fasten to if local codes

require securing the unit to the slab.

Make sure that there are no sprinkler heads near or directly spraying into

the heater. Cap off or redirect heads as needed.


The unit can be strapped down using a strap kit. Attach a

strap to each side and anchor to the deck.









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The piping sequence: pool/tank pump / filter / heat pump / chlorinator (if pool) / pool/tank.


Note for Pools:

In-line chlorinators must be down stream of the heater to minimize harm to the

pool equipment.


Rigid PVC piping is recommended and all joints should be

secured with PVC glue. Make sure that the direction of the water flow

through the heat pump is correct as indicated by the labels on the unit. When

the piping installation is complete, operate the pool pump and check the

system for leaks. Check the filter pressure gauge to ensure that excessive

pump head pressure is not indicated.

The recommended flow rate is 50 gpm through the heat pump.

For questions on multiple unit installations, please contact our

main office. Multiple unit installations should always be in

parallel circuits.


CAUTION: The main power disconnect must be off before opening the

access panel.

It is required that the wiring of your heat pump be done by a qualified

electrician in accordance with local code requirements.

IMPORTANT: The electrical conduit must be run up through the base of

the unit and connected at the control box with a conduit connector.

A properly sized breaker and copper wire must be used. See inside access

panel for wiring diagram.












Page 7


Because all metals have different electrical potentials, ALL metal

and electrical components of the pool/tank system must be bonded

together. This includes the metal framework of the pool/tank, lights, pump,

filter, heater, any automatic chlorine generator and any other metal or

electrical equipment. On some older pools, this substructure bond wire may

not exist. In this case, a 6 to 8 ft. copper rod must be driven into the

ground near the pool/tank equipment and all electrical and metal components

must be bonded to the rod. A bonding lug is furnished on the side of the

control box of the heat pump for the bond wire to be attached. Warranty will

be void if system is not properly bonded.




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Not only is the water chemistry of your pool, spa or tank important to human health

or livestock health, it also directly affects the life of your heat pump. This is

the most important item in the maintenance of the heat pump. If the water

chemistry is improperly maintained or if the chemicals are improperly

introduced into the water, this will damage the heat pump's internal heat

exchanger and could eventually cause a leak, rendering the heat pump


CAUTION: Damage to the heat pump due to improper water chemistry

is not covered under the warranty.*

Following is the table for essential water quality readings, which must be

constantly maintained for swimming pools and spas:




Normal Range


PH Level

7.4 to 7.8

1 time per week

Chlorine Concentration

1.0 to 3 PPM

1 time every 2 to 3 days

Total Alkalinity

80 to 120 PPM

1 time every 2 to 3 weeks

Total Dissolved Solids

Below 2400 PPM

1 time per month

Calcium Hardness

200 to 300 PPM

1 time per month


The location of the chemicals' introduction to your system is also critical to

the heat pump's life. If an automatic in-line chlorinator or brominator is used, it

must be located downstream of the heat pump. A trap must also be installed

between the chlorinator and the heat pump to prevent chlorine return into the

heat pump.

Note for Swimming Pools and Spas:

IMPORTANT: Never leave any type of solid chlorine in the pool skimmer.

This will cause a high concentration of Chlorine to enter the heat pump, causing

premature corrosion. You must divert water flow directly to the pool/tank before

adding fast dissolving chemicals in skimmer.

* Models with Titanium Tube heat exchangers do not have a water

chemistry exclusion in their warranty.

Page 9



CABINET – Your heat pump's cabinet is made from a maintenance-free,

rust-free plastic that is UV resistant. It will last for years and any dirt or

dust may simply be wiped away with a cloth or sprayed off with a water

hose. The use of a product such as Armor- All will restore its natural luster.



CONTROL – State-of-the-art LCD readout control. Displays mode and

temperature of the water for ease of operation. No programming to learn.

Dual thermostats allow user to set pool, spa or tank temperatures. The control

is self-diagnostic and will display a fault if there is a problem. Other

features include: lockout, spa timer, automatic low temperature defrost and

remote control capabilities.


ULTRA-QUIET – The unit is equipped with a low RPM fan motor in

combination with a deep drawn venturi to ensure whisper quiet operation.


HIGH EFFICIENCY – The heat pump utilizes the latest in compressor

technology to produce the highest efficiency available when coupled with

the over-sized enhanced fin evaporator coil.


EASE OF INSTALLATION - The unit is equipped with easy-to-install,

hand-tightened unions for a quick and trouble-free installation. The unions

will accept 2" PVC piping. The electrical connection is made with one entry

directly into the control box for a quick hook-up and a neat appearance.


EASY ACCESS – The heat pump was designed for quick and easy access for

installation and diagnosis. The service panel is removed with two screws

and access to all service connections is right up front and easy to reach.

This allows the installation and service to be done quickly and efficiently –

so valuable time is not wasted.






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When the unit is powered up, but in the OFF mode, the display will show

"OFF". To turn the unit on, press the Up arrow button until desired

temperature is reached. To turn the unit off press and hold the Down arrow

button until the display shows off. This point will be one level below 50

degrees. This is convenient for shutting the unit down for short periods of


CAUTION: When the control is in the "OFF" mode, there is still high

voltage to the unit. If you want to turn the unit off for long periods of time,

shut the main power off to the unit at the main or service disconnect.



The control is equipped with two independent thermostats, one for pool

temperature and one for spa temperature in case of swimming pool application. 
This is to allow the user to preset a temperature of their choice and switch 
between the two settings with the POOL/SPA button located on the control. 
When power is applied to the control it will turn on in the previous mode, 
whether it is Pool Heat or Spa Heat. 
When water is flowing through the unit and the water temperature meets

 the specified set point condition, the control will initiate a heat cycle.

If you do not have a spa, you can use the spa thermostat as a second

temperature setting if you do not want to maintain full temperature all the

time. For instance, if you swim on the weekends only, you can set the

temperature back during the week to save costs but maintain a warmer

temperature for a shorter recovery time for the weekend.


ATTENTION: There is a 5-minute time delay upon completion of a 
heating/cooling cycle. This is to ensure that the critical components do

not fail due to short cycling of the heat pump.

The display on the control will show the thermostat being used and the

operating mode on the top line and the current water temperature on the

bottom line. The possible mode displays are: "POOL – HEAT", "SPA –





Page 11


To change the set point temperature, press either the Up or Down arrow

buttons on the control. The display will then show "POOL TEMPERATURE"

on the top line and the current set point temperature in numbers on the

bottom line. After adjusting to the desired temperature setting, the display

will revert to "POOL – HEAT" (or whichever mode you are in) on the top line

and the pool temperature in numbers with "DEGREES" on the bottom line

after 5 seconds of inactivity and the new set point will be stored in memory.

The default factory setting for Pool temperature is 85 degrees Fahrenheit.


The owner is responsible for determining the necessary length of operating

time for the pump and heat pump based upon their particular requirements.

Most units are sized to operate during the pool/tank filtering cycle time of 8 to 12

hours daily, providing an even, steady flow of heat. On warmer days the

heat pump will run less because there will be less heat loss from your pool/tank. The

heat pump is capable of running 24 hours per day if necessary. When you first

run your heat pump, it may need to run continuously for 24 to 48 hours to get

the pool/tank up to the desired temperature.


While in any mode the user can lockout the keypad by pressing and holding

the POOL/SPA button for 6 seconds. When the keypad lockout has been

enabled all buttons are disabled and the control will operate in whatever

mode it was in when the lockout occurred. Any button push while in lockout

will cause the display to show LOCKOUT for 5 seconds. To unlock the

Keypad, press and hold the POOL/SPA button for 6 seconds. The display will

show UNLOCKED for 5 seconds.


The heat pump is designed to enter the defrost cycle at ambient air

temperatures below 48° Fahrenheit. During this cycle, the unit may shut

down and the control will display "Defrosting" until the ambient air

temperature rises above frosting conditions.


It is normal for water to be draining from your heat pump. This occurs because

the evaporator coil condenses the water from the air. The water drains into

the base of the unit and out the holes that are located on each side of the

heater at the bottom. Your heat pump can produce 1 to 3 gallons of water per

hour. The water created from the condensation will dry up when the heat pump

shuts off.

Page 12




There is not much maintenance that needs to be done on your heat pump.

Making sure there is good airflow through the evaporator and proper

drainage are the two main tasks. A garden hose with low-pressure water

flow can be used to clean the evaporator coil. Make sure the heat pump has good ventilation to allow sufficient airflow.

CAUTION: Make sure all power is disconnected to the heat pump prior

to washing.

Clean the coil as needed. If located near the ocean, cleaning will need to

be done regularly to remove salt and sand. Use a very soft brush so as not

to bend the coil fins with soapy water to remove any build up. Keep the

drain holes in the base free of debris to assure proper condensate


Your heat pump's cabinet is made from a maintenance-free, rust-free plastic

that is UV resistant. It will last for years and any dirt or dust may simply be

wiped away with a cloth or sprayed off with a water hose. The use of a

product such as Armor- All will restore its natural luster.


Alcohol based cleaners may damage the plastic.



In areas where freezing condition is not prevalent and winterizing of pools is

not common, allow water to flow through the heat pump even when not in use.

In freezing areas, it is mandatory that the water be completely

drained from the heater and disconnected from the piping. The

heat exchanger must be blown out with air to ensure no water in

the heat exchanger.










Page 13


A simple test to verify that your heat pump is functioning is to place your hand

above the unit. There should be cool air blowing out the top after time

delay has expired. The return water to the pool/tank should be a few degrees

warmer than water entering the heater. After about 15 minutes of run

time, there should be water draining out of the base of the unit.

If you have reason to believe your heater is not functioning properly, follow

the troubleshooting guide below or call the factory for service.





Control Display



No power supply to

heater. Tripped breaker

or blown fuse. Control


Reset breaker. Replace

fuse. If problem persists,

call factory for service.

Control Displays



The pool pump is not

on. A valve is turned,

bypassing the water

through the heat pump.

Clogged water line,

filter or pump impeller.

Internal water pressure

switch failure.

Turn pool pump on. Clean

pump and filter. Adjust

water valves. If problem

persists, call factory for


Control Displays


Ambient air is too low

for heat pump to function.


Unit will turn back on once

ambient air rises to

appropriate level.


Control Displays





Refrigerant leak.

Call factory for service.










Page 14

Control Displays





Water flow restriction,

valve is turned

restricting flow.

Clean pump and filter.

Adjust water valves. If

problem persists, call

factory for service.


Control Displays

"HP3 Water



Water flow restriction,

valve is turned

restricting flow.


Clean pump and filter.

Adjust water valves. If

problem persists, call

factory for service.


Control Displays




Heater control

malfunction. Secondary

source of heat.


Call factory for service.


Control Displays



Defrost sensor

malfunction or not



Call factory for service.


Control Displays



Water sensor

malfunction or not


Call factory for service.

Pool/tank is heating or chilling

slowly or not

getting up to


Low or restricted water

flow through the

heat pump. Leak in

plumbing allowing air

into the water flow. It is

cold outside. Pump timer is not set for a long enough run time.

Pool is not being

covered. High wind

speed over pool/tank. Pool/tank

area shaded.

Clean or replace filter.

Inspect and clean pool

pump. Adjust water valves.

Repair air leaks. Use a pool

cover. Construct a wind

break around pool/tank. Set pool

pump timer longer. Call

factory for service.

Water is running

out of the bottom

of the heat pump.


The heat pump produces up

to 3 gallons per hour of

water condensing from

the evaporator coil.

Internal water leak.


Shut the heat pump off for

several hours and leave the

pool pump running. If the

water is still running out,

call factory for service.





Page 15



All service must be handled by an Authorized Service Center. Warranty may

be void if a non-authorized service representative does service. Do not

return the heat pump to your dealer, as they do not provide service.

Before calling for assistance or service, please check the Troubleshooting

section of this manual or call your dealer. This may save you the cost of a

service call. If you still need help, follow the instructions below.

Service can be obtained by calling us at: (888) 205-7766 and we will transfer you to the Authorized Service Center.

When asking for help or service please provide a detailed description of the

problem, your heat pump's complete model number and serial number, the

purchase date and dealer purchased from. This information will help us

respond properly to your request.

Keep a copy of the sales receipt showing the date of purchase.

Proof of purchase will assure you of in-warranty service.








The Hydro Royal Heat pumps can be used for Aquaculture purposes. Certain installation conditions must be met so that manufacturer's warranty will not be void for product misuse and/or improper installation. When installing your unit make sure that you have the adequate water pump and filter for your application. The risk of clogging your heat exchanger is higher if you don't have the right filter for your system. 
G & F Manufacturing will not be responsible for heat pump damage occurred because of improper operation and installation.

Please contact us before installation at 1 888 205 7766 for advice.

call us now1 888 205 7766