Pentair MiniMax Plus HP Installation Manual

AIR SOURCE UNIT

INSTALLATION MANUAL

POOL/SPA HEATERS, CHILLERS,

REVERSE CYCLE & COMMERCIAL MODELS

!

WARNING

FOR YOUR SAFETY - READ BEFORE OPERATING

Warning: If you do not follow these instructions exactly, a fire or explosion may result, causing

property damage, personal injury or loss of life.

!

WARNING

Improper installation, adjustment, alteration, service or maintenance may cause property damage, personal injury or
death. Installation and service must be performed by a qualified technician or service agency.

Models:
MiniMax Plus HP 400 (XLS400)
MiniMax Plus HP 600 (XLS600)
MiniMax Plus HP 800 (XLS800)

MiniMax Plus HP 1000 (XLS1000)

MiniMax Plus HP 230 (CP12)

FOR QUALIFIED TECHNICIANS ONLY

Part # 471950 Revision #E

© HydroTemp Manufacturing Co., Inc.

Note: Specifications may change without notice.

!

WARNING

FOR PROFESSIONAL USE ONLY

Trained Technicians Only !

!

WARNING

The following installation manual is for FACTORY AUTHORIZED- licensed professional trade use only !
The owner/user should review the following section for reference and knowledge needed to verify proper
installation for warranty validation. The owner/user should not attempt to perform any internal adjust­ments, electrical, plumbing or any installation procedures in this manual. The owner/user should never
open the access panel for any reason unless accompanied by a factory warranty representative.

Owners/users/installers should contact the factory service department for advice at

239-768-1555

!

WARNING

Always review the wiring schematic located inside the heater,

since it may have changed after this manual was printed !

!

WARNING

THE MISUSE OF THIS PRODUCT CAN RESULT IN SEVERE INJURY, DEATH,
OR PROPERTY DAMAGE. BE ADVISED OF THE FOLLOWING CONDI­TIONS THAT MAY EXIST:

1. ELECTROCUTION AND/OR FIRE DUE TO IMPROPER WIRING.

2. HAND AND HAIR ENTRAPMENT MAY OCCUR NEAR THE FAN LO­ CATED ON THE TOP OF THIS UNIT.

3. LOSS OF POOL WATER AND/OR FLOODING AND/OR PROPERTY DAM­ AGE.

4. DAMAGE AND/OR MISUSE TO THE PRODUCT RESULTING IN FAILURE
OR EXCESSIVE WEAR.

5. ALL ELECTRICAL WORK BY LICENSED PROFESSIONAL ONLY.

6. BACK OR BODY INJURY DUE TO MISHANDLING.

2

INSTALLATION MANUAL - TABLE OF CONTENTS

1. HEAT PUMP DESIGN FEATURES ..............................................................................................

.

2. HEATER PLACEMENT & REQUIRED CLEARANCES ..........................................................

Clearances for Airflow
Condensate Drainage
Heater Elevation
Sprinkler Location

3. PLUMBING & WATER FLOW ......................................................................................................

Placement and Chemical Protection
Chlorinator Location and Chemical Use

Standard Plumbing

Pool / Spa Combination Plumbing
Separate Pool / Spa Plumbing
Plumbing with Solar Panels
Commercial Applications
Water Flow Switch Options

4. START UP PRECAUTIONS ..........................................................................................................

Compressor Warm Up, Starting & Time Delay
Setting Water Pump Timer
Confirming Water Flow at Bypass Manifold
Operational Sequence Description
Water Pressure Switch Check
Freeze Protection Requirements

4 - 5

6 - 7

8 - 19

20 - 23

5. ELECTRICAL WIRING AND SETUP ..........................................................................................

Bonding to Pool Shell
Unit Specifications
Electrical Connections-Access Description
Electronic Thermostat & Diagnosis
Wiring Diagrams
Wiring Diagrams for Compool

6. TROUBLE SHOOTING GUIDE ...................................................................................................

7. WARRANTY AND DEALER SERVICE.......................................................................................

8. GLOSSARY OF TERMS ..............................................................................................................

Manufactured for Pentair Pool Products by HydroTemp Mfg. Co., Inc.

24 - 34

35 - 36

37

38-41

3

SPECIAL FEATURES

Separate Air Handling / Electric Compartment

An internal electrical compartment substantially reduces

future service from moisture and salt laden air flow.

Sturdy Rust Proof

Fiberglass Top

Non Fading

Large Aluminum & Copper

Lanced Fin

Evaporator Air Coil with

Vinyl Coil Guard

Automatic Diagnostics With

L.E.D. Display & Dual Pool/Spa

Electronic Thermostat

Optional Pool/Spa Wiring

Access Holes

Quiet

High Volume

Fan With

Vinyl Coated

Guard

Easy Connect

2 Inch Plumbing With

"Internal Automatic Bypass"

Up To 90 GPM

Product

Name Plate

Chemical

Warning Label

Sturdy Elevated

Fiberglass

Rust Proof
Bottom Provides
Proper Drainage

TRANE®

COMPRESSOR

with 410-A, the safe

and clean refrigerant.

Super Quiet & Highly Efficient Compressor Design

4

COMPRESSOR

And

SCROLL

W ATER SWITCH

CONTROL

POOL

SPA

T-STAT

LOW PRESS. HIGH PRESS.

MODE

MODE

READY

OK

ON

OK OK

Air Flow Out

Air Flow In

@ 4200 CFM

Bulkhead

Air/Electrical/

Mechanical

Separation

Wall

Isolated

Electrical

Compartment

Compressor

Fan

T
H
E

R
M

O
S

T
A

T

S
P

A

M
O
D

E

M
O
D
E

R
E
A
D

Y

P
O
O

L

C
O
N
T
R

O
L

W
A
T
E
R

S
W
T

­S
T
A
T

L
O
W
P
R

E
S
S

.
H
I
G

H
P
R
E
S
.

O
K

O
K

O

K

O
K

ead

ation

ll

@

n

4

I

2

w

o

l

F

r

i

A

l

i

o

C

r

i

A

r

o

t

a

5

0

Evapor

Compressor

Electrical Compartment

Top View

DESIGN ADVANTAGES

C

F

M

Fan

The electrical panel has an
isolated compartment, located
within the mechanical com­partment to prevent corrosion.
The heat from the compressor
located just below the electri­cal compartment helps elimi­nate moisture as well. This
exclusive design will substan­tially extend the life cycle of
the heater. The fiberglass cabi­nets is corrosion proof and is
much stronger than plastic
cabinets.

4250

2" PVC

Water IN

20-90 GPM

Internal

Automatic

Bypass

Internal Automatic Bypass

Free Flow 2" Plumbing

Automatically adjusts the water flow.

Lowest water flow restriction available.

C
O
N

T
R
O
L

P
O
O

L

S
P

R

A
E
A
D
Y

W
A
T
E

M

R

O

S

D

W

E

M

T

­O

S

T

D

A

E

T

L
O
W
P
R

E
S
S

.
H
I
G
H

O

P

K

R

E
S

.
O
K

O
K

O
K

T
H

E
R

M

O

S
T

A

T

Elevated

Fiberglass

2" PVC

Water OUT

Bottom Pan

for Proper

Condensation

Drainage.

Heat Exchanger

Special Cupronickel Alloy

Encased In A Block of Foam

to Prevent Heat Loss & Corrosion

T-STAT

L.E.D. Diagnostic Lights

Dual Thermostat

See specification sheet to determine

electrical breaker requirement.

5

INSTALLATION GUIDELINES

IMPORTANT NOTICE: The following are the installation requirements that must be followed in order to meet

the general factory specifications. The installer may engineer other types of installation techniques that are suited
for each particular installation, regarding placement and plumbing, but should still follow this basic format. The
factory warranty will not warrant other field installed options unless factory parts are used according to this
booklet. This information is intended for a licensed professional contractor only.

!

WARNING

The pool owner or operator should not attempt to perform or change any aspect of
the installation, because serious bodily injury and or electrocution may result.

HEATER PLACEMENT & CLEARANCE

CLEARANCE & AIR FLOW

Prepare a level area near the pool/spa filtering system.
Remove any plants or equipment that do not meet the
minimum clearance requirements for the side air inlets
or the top air discharge, see diagram on next page.

a

n

r

c

a

e

l

C

.

n

i

M

"

9

l

i

o

C

r

i

A

r

o

t

a

Evapor

Bulkhead

Compressor

12" Min. Clearance On Sides

Electrical Compartment

24" to 36" Service Access Front

Make sure the air flow is not restricted in any way. Do
not install the unit in an area where the cooler discharge
air may accumulate and be drawn back into the unit.
Provide ventilation through containment walls or fenc­ing for the air intake if needed.

CAUTION

!

Do not install this unit indoors or

in filtering system equipment rooms.

e

A

t

E

n

d

Fan

EQUIPMENT SLAB & PITCH

To support the heater, place
a concrete or fabricated slab

C
O
N
T
R
O
L

P
O
O

near the filtering system.

L

S
P

R

A
E
A
D
Y
W
A
T
E
R
S
W

T

M

­O

S
T

D

A

E

T
L
O

W
P
R
E
S
S

.
H
I
G
H
P

R
E
S

.
O
K

O
K

T
H
E

R
M

O
S

T
A
T

Whenever possible, the slab
should be placed at the same
level or some what above
the filtering system slab.
Make sure the slab does not
hold water and see that it is

1/4"

pitched no more than 1/4 inch away from the com­pressor end (front) of the heater. Pitch slab from

front to back 1/4" maximum and level from side
to side.
CONDENSATION DRAINAGE

The heat pump will precipitate water that drains from
the unit at a steady rate while it is running. This con­densation is from the humidity in the outside air. The
more humidity, the more condensation it will pro­duce. There are several drain ports in the bottom of

12" Min. Clearance On Sides

the unit, make sure they do not become clogged with
debris.

HEATER ELEVATION

If the heater is to be installed more than 6 feet above,
or more that 3 feet below the pool water level, you
may need to install an external flow switch as shown
in the plumbing section of this manual. If a solar
system or special equipment is in use, you may re­quire either a special water pressure switch or the
use of an external flow
switch as shown in "Water
Flow Switch Section",

6

SPRINKLER LOCATION

Relocate or remove any sprinkler heads that have the
chance of spraying on or into the unit.
are absolutely no sprinkler heads near the heater that
will in any way spray on or into the heater. Sprinkler

damage is not covered under the warranty agree­ment. Make sure they are a sufficient distance away so

normal wind currents will not carry the mist to the heater.

The heater is designed to handle the wettest weather
conditions that are typical of rain and humidity, etc.
However, sprinkler heads force high pressure water into
the unit from the side at an odd angle. Most sprinkler
systems are connected to a well system. Most well water
is high in minerals, sulphur and other aggressive con­taminates. These contaminates will leave a build up on
the evaporator coils and electronics causing corrosion
and hamper the efficiency. If you are located within 15
miles of the coast, salt may be in the well water also.

Make sure there

!

CAUTION

Chemicals should NOT be stored near the heater. The
fan may draw corrosive chemical vapor through the unit
causing damage. Do NOT store anything on top, under­neath or around the heater. You will need access to the
disconnect breakers in the event of an emergency.

CLEANING

To clean the heater you should take a sponge and mild
soapy water and wipe the surfaces clean. Do not use a
pressurized garden hose to clean the heater. Never force
water into the unit from any direction. You may use a
garden hose at low pressure with no nozzle attachment
to rinse the air coils. Pour a mild liquid soap into the
water stream as you rinse the air coils. Clean the evapo­rator air coils at least 4 times a year. If you live near the
sea coast, you will need to clean at least 6 times a year
or more to remove salt and sand. Clogged evaporator
coils will reduce the efficiency of the unit and cause
corrosion. A professional should clean the coils peri­odically, every year or two.

ROOF CLEARANCE & RUN OFF

Be aware of roof slope and overhang above the heater.
Sharp sloping roofs without gutters will allow massive
amounts of rain water, mixed with debris from the roof
to be forced through the unit. Roof valleys that collect
run of f from two slopes are especially important to avoid.
If space is limited, determine if a gutter or down spout
is needed to protect the heater. Low roof overhangs may
obstruct the air flow out of the unit and require 48 inches
of clearance, See diagram below.

No water directly off
roof into heater

4 Feet

Evaporator Air Coils

7

PLUMBING & WATER FLOW

PLUMBING CONNECTIONS

Filtered Water “IN” on the LEFT front.
Heated Water "OUT" on the RIGHT front.

The plumbing inlets are "slip" p.v.c. pipe that will accept
a 2 inch p.v.c. glue fitting. The pipe is left plain so you
can adapt to your needs. Use p.v.c. cleaner to prime the
fitting and pipe. Use a quality medium body p.v.c. glue.

FOR PUMPS UP TO 2 H.P. OR 90 G.P.M. MAX.
SEE NEXT PAGE FOR LARGER WATER PUMPS.

1. PUMP

2. FILTER

3. HEATER

4. LOOP & CHECK

5. CHLORINATOR

6. RETURN TO POOL

Water

Pump

WATER OUT

WATER IN

Heater

Filter

3

2

4

!

WARNING

See mandatory chlorinator placement
and install of the loop & check valve.

INTERNAL
AUTOMATIC BYPASS

The heat pump in equipped with
a internal "Automatic Bypass"
valve. A variable rate spring
valve is used to regulate the wa­ter flow through the heat ex­changer. Steady flow will be de­livered over a wide range of flow
rates. This automatic valve can
handle a maximum flow rate of
90 gallons per minute.

The automatic valve will com­pensate for flow loss due to nor­mal filter debris accumulation or
changes if flow due to valving
and other conditions.

IN

1

5

6

Chlorinator or

Chemical Feeder

C
O
N

T
R
O
L

P
O

O
L

S
P

R

A
E
A

D

Y
W
A
T
E

M

R

O

S

D

W

E

M

T

-
O

S
T

D

A

E

T

L
O
W

P
R
E

S
S
.

H
I
G

H

O

P

K

R
E
S

.

O

K

O
K

O

K

THERMOSTAT

Water Inlets

"

d

l

o

C

m

p

e

"

T

R

˚

70 GPM "Cold"

50 GPM

Bypassed

0

2

M

P

G

n

I

C

o

t

l

i

o

u

O

Hot & Cold
Mix Here

i

5

s

1

e

-

˚

0

1

t

"

H

o

t

"

Chlorinator Loop & 2 lb. Chem.

Resistant Check Valve

Free Flow

Flexible

Marine Grade

Cupronickel

Heat Exchanger

Encased in

Closed Cell Foam

Special

Compression Fitting

See chlorinator
placement guidelines.

Automatic Bypass Valve

Variable Rate Self Adjusting

up to 90 G.P.M.

OUT

8

HIGH RATE WATER PUMPS

EXCESSIVE FLOW BYPASS MANIFOLD
FOR LARGE 2 H.P. PUMPS OR OVER 90 G.P.M.

If the pool circulation pump is over 2 HP OR if the total
flow exceeds 90 GPM you will have to add the "excessive
flow valve" as shown here. Do not install a bypass valve
that will completely shut off flow to the heater, see "Shut­down Procedures".

Some larger water pumps may be restricted if the pipe size is
not adequate therefore reducing its overall flow rate. When
determining if you need an excessive bypass valve, one has to
consider the hydraulic restriction of the filter, valving, amount
of 90˚ fittings and the distance of pipe to the pool in the exist­ing filtering system. If you have a 2 HP water pump that does
not exceed 90 G.P.M. considering the above, you may not need

the excessive bypass. Excessive water flow can damage the

heat exchanger. SPECIAL NOTE: See chlorinator place­ment instructions (Pg. 10).

IN

2" p.v.c. "T"

OUT

Bypass Pipe Size:

1.5" or 2" pipe @ 2 H.P.
2" pipe @ 3 +.H.P

2 H.P Pumps

Close Bypass 50%

All others must be set by flow meter.
See Commercial Plumbing Diagram

Close Bypass 25%

Ball Valve
@ 45 Deg.

3 H.P. Pumps

2" p.v.c. "T"

ADVANCED HEAT EXCHANGER DESIGN

This diagram is a cross section of the heat exchanger.
The seamless tube within another tube design trans­fers heat very efficiently.

The inner water tube is made of thicker resilient cu­pronickel metal alloy to help resist corrosive pool
water. The outer heavy gauge Freon™ tube is dipped
in a special weather proofing material.

"Excessive Flow Valve Manifold"
Do not valve in a manner that will totally
isolate heater from water flow.

CAUTION

!

BE SURE THE BYPASS VALVE IS

POSITIONED TO ALLOW REMOVAL OF

THE FRONT ACCESS PANEL!

Position the valve so that the access panel can be
easily removed, always check before final glu­ing. Angle the valve out 45˚ to provide adequate
clearance. You may use a Compool 2-way valve
or other type if desired. "Do not" use a brass

gate valve or a 3-way valve for bypass !

Heat Exchanger Cross Section

Closed Cell Insulation Foam

Hot

Refrigerant

Passage

Then, to insulate from heat loss and help prevent cor­rosion further, the heat exchanger is encased in a block
of special "closed cell" sealing foam.

Water Passage

Cupronickel

9

Metal Alloy

CHEMICAL PROTECTION PRECAUTIONS

!

CAUTION

NO CHEMICALS

IN SKIMMER !!!

Off Line

All Chlorinators Go Down Line of Heater !

In Line

OFF LINE TYPE
CHLORINATOR

MANDA TORY CHECK VALVE & LOOP

LOOP ABOVE

8" MIN.

TO

POOL

CHLORINATOR

2 LB
CHEMICAL
RESISTANT

CHECK VALVE

(PN# 888-018)

FROM

HEA TER

The chemical resistant check valve and loop MUST
be installed with all types of chlorinators to pre­vent chlorine migration to the heater. The loop

should extend at least 8 inches above the chlorinator
top. The chemical resistant check valve should be
placed on the pipe leading "up" to the chlorinator.
Therefore, the weight of the water above the check
valve will hold it closed even if the spring is weak or
damaged. Mount the check valve as low as possible.
Be sure to keep the chlorinator, pump and filter lid o­rings lubricated with silicone grease to insure a good
seal. If it looses its seal, it will allow the chlorine to
migrate to the heater when the system shuts off. The
loss of vacuum will allow reverse flow.

10

IN LINE TYPE
CHLORINA TOR

Insulated Heat

Exchanger

!

Air leaks or suction leaks that allow air into the system will
cause turbulence and damage to the sacrificial fittings. Cor­rect immediately ! Do not add isolation valves unless required
for seasonal shut down & freeze pr otection procedures. Stag­nant water left in the heat exchanger can cause corrosion !

CAUTION

CHLORINATOR PLACEMENT & CHEMICAL USE

Chlorinator placement, water balance and where chemicals are added are very important aspects of installation.
The failure to protect the unit from chemical damage which is not covered under the warranty.

PROTECT HEAT EXCHANGER

You want to prevent any chemicals from running
through the piping and heat exchanger of the heater.
Eliminate chlorinating devices which inject chlorine so­lution through the suction side of the filtering system,
thus the chlorine passes through the heat exchanger at
full strength before it has a chance to mix and dilute
with the rest of the pool water. Do not add isolation

valves unless done for seasonal shut down & freeze
protection procedures. Stagnantwater left in the heat

exchanger can cause corrosion !

CHLORINE MIGRATION

Some chlorinating devices will back siphon when the
system is shut off, therefore allowing the chlorine solu­tion from a chlorinator to flow through the heat ex­changer causing damage. You have to make sure your
filtering system does not have a vacuum leak that would
allow the system to lose prime. When this happens,
water will move backwards through the chlorinator thus
moving the chlorine solution into the heat exchanger.

CHLORINATOR PLACEMENT

A) All chlorinators should have a chemical resis­tant "check valve and a loop" plumbed at least 8
inches above the chlorinator, between it and the
heater, as far down line from the heater as possible.

B) Never plumb a chlorinator into the suction side
of the circulation pump.
C) Do not use chemicals through the skimmer basket.
D) All automatic chemical feeders should be as far
down line of the heaters water flow as possible.
E) Off line type chlorinators should be tapped into
the plumbing only as shown on the diagram. See
pool/spa combinations that require special place­ment.
F) Do not install a chlorinator in at a higher eleva­tion than the heater itself even if a loop and check
valve is used. This may allow chlorine to migrate to
the heat exchanger. Chlorinator should be the low­est point in the system.

ADDING CHEMICALS

Do not place any chemicals in the skimmer throat.
Chlorine tablets placed in the skimmer will allow a
concentrated solution of chlorine to pass through
the heat exchanger. Do not place any chemicals in
the pump lint trap cavity or filter. Do not over load
chlorinator feeder cavity. Excessive amounts of
chlorine tablets will increase the chance of migra­tion of acidic and concentrated chlorine to the heat
exchanger causing damage. 25% of maximum is
suggested.
When adding any chlorine make sure that the pH
does not drop below 7.4 and the alkalinity does not
drop below 90 p.p.m. Fiberglass pools, spa & liner
pools PH & chlorine levels are difficult to maintain.
Please be advised heater damage may occur if mini­mum water balance levels are not maintained.

COMMERCIAL FEEDERS

In a commercial pool situation where there is a vacuum
type filter system is used in conjunction with a surge
tank, there are exceptions to chemical injection. Some
liquid chlorine (sodium hypochlorite) feeders and liq­uid muriatic acid feeders will inject their solutions into
the surge tank on the suction side of the unit. As long
as the liquid chlorine and, muriatic acid is diluted with
75% water in a supply tank and fed at a slow enough
rate, you can allow this type of chemical injection to
take place. As long as the water in the surge tank has
not conflicted with the chemical values described in
this booklet. You should test the surge tank while the
feeders and circulation pumps are running, just as you
would the pool water. Then adjust the solution or rate
of feed accordingly.

Never place chlorine tablets in the surge tank. Never

allow a tablet type chlorinator to inject solution into

the surge tank under any circumstance.

MINIMUM WATER BALANCE

PH.......................................7.4 to 7.8

Chlorine/Bromine..............1 to 5 ppm

Total Alkalinity............90 to 120 ppm

Calcium Hardness.......250 to 400 ppm

11

!

CAUTION

!

CAUTION

STANDARD PLUMBING 1 OR 2 UNITS

The following diagram is for standard plumbing of either one or two units. Plumb the unit in "after" the filter and
"before" the chlorinator. SPECIAL NOTE: See chlorinator placement instructions in this manual (Pg. 10).
Be advised that if your circulation pump is over 2 HP OR if the total flow exceeds 90 GPM, you will have to add
the "excessive flow valve" as shown below. Some larger water pumps may be restricted if the pipe size is not
adequate therefore reducing its overall flow rate. When determining if you need an excessive bypass valve, one
has to consider the hydraulic restriction of the filter, valving, amount of 90˚ fittings and the distance of pipe to the
pool in the existing filtering system. If you have a 2 HP water pump that does not exceed 90 G.P.M., considering
the above, you may not need the excessive bypass See the diagram shown at the bottom of this page. Excessive
water flow will damage the heat exchanger.

2

Up to 90 Gallons

Per Minute

Maximum Flow

Per Unit Before

Optional Exterior

Bypass Is

Required.

SINGLE UNIT INSTALLATION

TWO UNIT INSTALLATION

"Vertical"

*

NOTE:"EXCESSIVE WATER

FLOW VALVE" PUMPS OVER 2

HP OR 90 GPM

* NOTE:"MUST BE ADDED WHEN THE

TOTAL FLOW IS OVER 90 GALLONS

PER MINUTE * USE IF WATER PUMP IS

OVER 2 H.P.

12

POOL & SPA COMBO PLUMBING

Heating a connected pool and spa spill over with one heater. For a single pump system.

The following is a schematic of the suggested plumbing set up when using the standard dual thermostat kit. This
design is used for pool/ spa combinations where the pool and spa are connected via a spill over, when one filtering
pump is used to circulate the water to either the pool or spa. The motorized valves turn to isolate the pool or spa
when the dual thermostat is activated by the user. The motorized valves shown, can be manual if automatic
operation is not desired. See "Dual Thermostat Kit". Note the chlorinator placement to protect the heater. A
separate hydrotherapy pump is suggested for newly constructed pools to eliminate restriction to the spa jets.

Remember

::

: If the water pump is larger than 2 HP the excessive water flow valve may be needed.

::

Manual

3-Way

Valve

Motor

Driven

3-Way

Valve

::

:

"Note Chlorinator Placement"

::

13

"Vertical"

SEPARATE POOL & SPA PLUMBING

Heating a separate pool & spa, "without" a spill over, with one heater. Two pump system.

The following schematic is the suggested plumbing set up when using the dual thermostat kit. This design is for
"separate" pool and spa combinations, where the two are totally isolated from one another. The motorized valve
turns so that the heater is isolated to either the pool or the spa when the dual thermostat is activated by the user. The
motorized valves shown can be manual if automatic operation is not desired. Please note the 10 pound spring
valve and ball valve used as a bypass when the valves are turning. This will eliminate the possibility of "dead
heading" by the user.

NOTE: An exchange of water between the pool & spa may occur. This will depend on pump size, pipe size
and equipment distances. The possibility of the spa flooding over or draining should be considered. Most
commercial pool/spa codes do not allow this type of plumbing set up.

"Vertical"

"Vertical"

In

Out

Remember: If either water pump is over 2 HP,
the excessive water flow valve will be needed.

14

Manual

3-Way

Valve

Motor

Driven

3-Way

Valve