Pentair UltraTemp User Guide

UltraTemp

Heat Pump

®

IMPORTANT SAFETY INSTRUCTIONS

READ AND FOLLOW ALL INSTRUCTIONS

SAVE THESE INSTRUCTIONS

Installation and

User’s Guide

Customer Service / Technical Support

If you have questions about ordering Pentair Water Pool and Spa (“Pentair”) replacement parts, and pool products,
please use the following contact information:

i

Customer Service (8 A.M. to 5 P.M. — Eastern and
Pacific Times)

Phone: [phone]
Fax: [phone]

Web site

visit www.pentairpool.com or www.staritepool.com to
find information about Pentair products.

Table of Contents

Important Warning and Safety Instructions .......

Before Installing the Heat Pump .........................

Heat Pump Overview and Features
Heat Pump Installation Requirements
General Installation Information

Installation and Location .....................................

Materials Needed for Installation
Equipment Pad
Drainage and Condensation, Roof Run Off,

and Lawn Sprinklers
Heat Pump Dimensions
Location and Clearances
Anchor Clamp Installation
Water Connections and Plumbing
Automatic Flow Control Valve
Water Pressure Switch Adjustment
Multiple Unit Installation

Heat Pump, Heater, Solar

Multiple Heat Pump Connections
Electrical Connections and Wiring
Wiring Diagram – (Single Phase – 50/60 Hz)
Wiring Diagram – (Three Phase – 60 Hz)
Wiring Diagram – (Three Phase – 50 Hz)

Connecting to an Automation System ...............

Remote Operation/Relay Remote Controls
Connecting to IntelliTouch or EasyTouch

via Heat Pump Spade Terminals
Connecting to IntelliTouch or EasyTouch

via RS-485 Connector
Pin Configuration for Heat Pump Control
Board to IntelliTouch
Connecting IntelliTouch or EasyTouch

to the Heat Pump

ii
1

1
1
1

2

2
2

2
2
3
4
4
4
5
6
6
6
8
9
10
11

12

12

13

14

15

15

Technical Support
Sanford, North Carolina (8 A.M. to 5 P.M. ET)

Phone: [phone]
Fax: [phone]

Moorpark, California (8 A.M. to 5 P.M. PT)
Phone: [phone] (Ext. 5591)
Fax: [phone]

Operating the Heat Pump ..................................

Swimming Pool Energy Saving Tips
Heat Pump Control Panel Overview
Operator Setup Menu Tree Guide

Pump Start Time (for AutoSet)
Intelli Address
Set Water Temperature Offset
Defrost Cycle
Locking the Control Panel

Control Panel Menu Tree Guide

Stopping and Starting the Heat Pump
Changing the Set Point
Heat, Cool, and Auto Modes
Activate Heat Pump Timer
Relay Remote
Serial Remote

AutoSet Operation
Timers and Delays
Control Panel Alarm Messages

Maintenance .......................................................

Water Chemistry
Winterizing
Spring Start Up
Inspection and Service
Owner Inspection
Professional Maintenance and Service

Technical Information ........................................

Electrical Supply - Voltage Requirements
Temperature Resistance Chart
Ambient/Water Flow Table for Professional
Maintenance and Service
Heat Pump Pressure Drop

Troubleshooting .................................................

Replacement Parts .............................................

Illustrated Parts View
Parts List

16

16
16
17
18
18
18
18
18
19
20
20
20
20
20
21
21
22
22

23

23
23
23
23
23
24

25

25
25

26
26

27
31

31
32

For pool energy saving tips, refer to page 16, under “Operating the Heat Pump”. For technical data, voltage
requirements, or ambient/water flow information, refer to pages 25-26 at the back of the manual.

P/N 474099 Rev. F 5/15/12

UltraTemp

®

Heat Pump Installation and User’s Guide

ii

IMPORTANT WARNING AND SAFETY INSTRUCTIONS

Important Notice:

This guide provides installation and operation instructions for the
UltraTemp
this equipment.
Attention Installer: This guide contains important information about the
installation, operation and safe use of this product. This information should
be given to the owner and/or operator of this equipment after installation
or left on or near the heat pump.
Attention User: This manual contains important information that will
help you in operating and maintaining this heat pump. Please retain it
for future reference.

Failure to follow safety warnings and instructions can result in severe
injury, death, or property damage. Call [phone] for additional free
copies of these instructions.

Codes and Standards

UltraTemp® heat pumps are listed by ETL as complying with the latest
edition of the “UL Standard for Safety for Heating and Cooling Equipment”,
UL 1995 and CSA C22.2 No. 236.

All Pentair heat pumps must be installed in accordance with the local
building and installation codes as per the utility or authority having
jurisdiction. All local codes take precedence over national codes. In the
absence of local codes, refer to the latest edition of the National Electric
Code (NEC) in the United States and the Canadian Electric Code (CEC)
in Canada for installation.

The electrical supply to this product must be installed by a licensed,
certified electrician or qualified personnel in accordance with the
National Electrical Code and all applicable local codes and ordinances.
Improper installation will create an electrical hazard which could result
in death or serious injury to pool or spa users, installers, or others due
to electrical shock, and may also cause damage to property. Read and
follow the specific instructions inside this guide.

switch shall be provided as part of the installation. The switch shall be
readily accessible to the occupants and shall be installed at least 5 feet
[1.52 m] away, adjacent to, and within sight of the unit.

Consumer Information and Safety

The UltraTemp® series of heat pumps are designed and manufactured to
provide safe and reliable service when installed, operated and maintained
according to the information in this manual and the installation codes
referred to in later sections. Throughout the manual, safety warnings and
cautions are identified by the “ “ symbol. Be sure to read and comply
with all of the warnings and cautions.

UltraTemp

®

Heat Pump. Consult Pentair with any questions regarding

Before installing this product, read and follow all
warning notices and instructions which are included.

RISK OF ELECTRICAL SHOCK OR
ELECTROCUTION.

Do not permit children to use this product.

For units intended for use in other than single­family dwellings, a clearly labeled emergency

The U.S. Consumer Product Safety Commission
warns that elevated water temperature can be
hazardous. See below for water temperature
guidelines before setting temperature.

The following “Safety Rules for Hot Tubs”
recommended by the U.S. Consumer Product
Safety Commission should be observed when
using the spa.

®

Heat Pump Installation and User’s Guide

1. Spa or hot tub water temperatures should never exceed 104° F [40°

C]. A temperature of 100° F [38° C] is considered safe for a healthy
adult. Special caution is suggested for young children. Prolonged
immersion in hot water can induce hyperthermia.

2. Drinking of alcoholic beverages before or during spa or hot tub

use can cause drowsiness which could lead to unconsciousness
and subsequently result in drowning.

3. Pregnant women beware! Soaking in water above 100° F [38° C]

can cause fetal damage during the first three months of pregnancy
(which may result in the birth of a brain-damaged or deformed child).
Pregnant women should follow the 100° F [38° C] maximum rule.

4. Before entering the spa or hot tub, the user should check the

water temperature with an accurate thermometer. Spa or hot tub
thermostats may err in regulating water temperatures.

5. Persons with a medical history of heart disease, circulatory problems,

diabetes or blood pressure problems should obtain their physician’s
advice before using spas or hot tubs.

6. Persons taking medication which induce drowsiness, such as

tranquilizers, antihistamines or anticoagulants should not use spas
or hot tubs.

Hyperthermia occurs when the internal temperature of the body reaches a
level several degrees above normal body temperature of 98.6° F [37° C].
The symptoms of hyperthermia include: drowsiness, lethargy, dizziness,
fainting, and an increase in the internal temperature of the body.

The effects of hyperthermia include:

1. Unawareness of impending danger.

2. Failure to perceive heat.

3. Failure to recognize the need to leave the spa.

4. Physical inability to exit the spa.

5. Fetal damage in pregnant women.

6. Unconsciousness resulting in danger of drowning.

Warranty Information

Heat pumps are sold with a limited factory warranty. Details are specified
on the warranty card. Make all warranty claims to an authorized Pentair
dealer or directly to the factory. Claims must include the heat pump serial
number and model (this information can be found on the rating plate),
installation date, and name of the installer. Shipping costs are not included
in the warranty coverage. This warranty does not cover damage caused
by improper assembly, installation, operation, improper water chemistry
balancing or other chemical abuse, or improper sanitation application,
winterizing, field modification, or failure to earth bond and properly ground
the unit. Any changes to the heat pump, evaporator, heat exchanger, wiring,
or improper installation may void the warranty.

General Specifications

Installation Location Certified for use:
OUTDOOR USE ONLY. Failure to provide the proper clearances
outlined on page 3 will lower the performance of the heat pump
and void the warranty.
Water Pipe/Heater Connection — Plastic 2” PVC (Unions included)

Flow Rate

Maximum 120 gpm [456 lpm] - If system flow rate exceeds 120 gpm, a
bypass valve is required.
Minimum 30 gpm [110 lpm]
Maximum Working Water Pressure 50 psi

For Electrical Supply and Voltage Requirements, refer the tables
on pages 25-26 of the manual.

Before Installing the Heat Pump

1

Heat Pump Overview

Your Pentair heat pump will provide you with years of
heated pool enjoyment. Heat pumps operate by taking
heat from the surrounding air and transferring it into the
water. The warmer the air and the more humidity in the
air, the more latent heat is available for heating your
pool. With a properly sized heat pump for your pool, the
heat pump should raise your pool on average 1° F per
hour depending on air temperature, humidity, and water
temperature. The ideal or rated condition for the heat
pump is 80° F air temperature, 80% relative humidity, and
80° F water temperature. As conditions decrease from
80/80/80, the heat pump performance will decrease
slightly.

Heat Pumps are best utilized to maintain a set water
temperature; they are not intended to provide instant or
fast heating. It is not reasonable to expect a heat pump
to perform like a gas heater which has a much higher
BTU output and faster response. Also, gas heaters are
not dependent on environmental conditions. Swimming
pool heat pumps are very similar to home heating and
air conditioning heat pumps and therefore should be
treated similarly.

Proper operation and use of the heat pump is to set it at
your desired temperature and leave it. Your heat pump
will turn on and off automatically to maintain your desired
temperature much like your home HVAC unit. To take
advantage of the sun’s energy, operate your heat pump
during the heat of the day.

Your heat pump will still operate when the temperature
drops at night, but the output will be decreased. It is
acceptable to shut the heat pump off and not use it for
extended periods of time. When you have a need to heat
your pool, please plan accordingly since it may take the
heat pump days to heat your pool back to your desired
temperature, depending on your pool temperature and
environmental conditions.

Heat Pump Installation Requirements

Correct installation is required to assure safe operation.
The requirements for Pentair heat pumps include
the following:

• Dimensionsforcriticalconnections.

• Fieldassembly(ifrequired).

• Appropriatesitelocationandclearances(pages2-3).

• Properelectricalwiring(pages8-11).

• Adequatewaterow(page26).

This manual provides the information needed to
meet these requirements. Review all application and
installation procedures completely before continuing
the installation.

General Features

• Dual digital thermostats offer precise temperature
control to maintain the desired separate water
temperatures in pool/spa combinations without
overheating or wasting energy.

• Long-life corrosion resistant composite plastic
cabinet stands up to severe climates and pool
chemicals.

• 100% pure titanium heat exchanger assures
corrosion-free performance for extra long life.

• Self-diagnostic control panel monitors and
troubleshoots heat pump operations to ensure
safe, dependable operation.

• Autoset (time clock over-ride) feature monitors
water temperature and turns the water circulation
pump on and off as needed to maintain desired
pool temperatures.

• Automatic defrost feature senses refrigerant
temperature and prevents the heat pump from
freezing, allowing the heat pump to operate at
even lower temperatures.

• Compatible with all automated control packages.
RS485 communication compatible with IntelliTouch
and EasyTouch control systems.

• Thermostatic expansion valve (TXV) controls
refrigerant fl ow for optimum efficiency and BTU
output over a wider operating range.

• Elevated base pan for positive drainage of
condensation.

• 2-inch plumbing connections for easy installation.

• Separate isolated electrical compartment prevents

internal corrosion, extends heater life.

• Highest efficiency available, meets or exceeds
existing codes and standards.

• Adjustable timer allows to set the heat pump to
run for a predetermined time. Incremental by 10
minutes to a maximum of 99 hours.

General Installation Information

1. Installation and service must be performed by
a qualified installer or service agency, and must
conform to all national, state, and local codes.

2. Heat pumps get electrical power from an
external source and provide a dual electronic
thermostat control system for pool/spa
combinations or preheat convenience.

3. This heat pump is specifically designed for heating
fresh water swimming pools and spas. Do not use
it as a general service heater. Consult your dealer
for the appropriate Pentair products for these
applications.

UltraTemp

®

Heat Pump Installation and User’s Guide

2

38.7"

(983 mm)

4.5"

(114 mm)

9.25"

(235 mm)

11.25"

(286 mm)

A

34.0"

(864 mm)

32.0"

(813 mm)

30.7"

(780 mm)

Installation and Location

When pool equipment is located below the pool surface, a leak from any component can cause large scale water loss or flooding.
Pentair Water Pool and Spa, Inc. cannot be responsible for such water loss or flooding which may cause damage to the product.
Avoid placing the heat pump in locations where it can cause damage by water or condensate leakage. If this is not possible, provide
a suitable drain pan to catch and divert any leakage.

Only a qualified service person should install the heat
pump. Before installing this product, refer to the
Important Warning and Safety Instructions on page ii.

Materials Needed for Installation

The following items are needed and are to be supplied
by the installer for all heat pump installations:

1. Plumbing connections (2 inch).

2. Level surface for proper drainage.

3. Suitable electrical supply line. See rating plate on
unit for electrical specifications. A junction box is not
needed at the heat pump; connections are made
inside of the heat pump electrical compartment.
Conduit may be attached directly to the heat pump
jacket.

4. Electric cutout switch that will interrupt all power to
the unit. This switch must be within line of sight of
the heat pump. Check local codes for requirements.

5. Watertight conduit to run the electrical supply line.

Equipment Pad

For proper drainage of condensation and rain water,
place the heat pump on a flat slightly pitched surface,
such as a concrete or fabricated slab (pad).

If possible, place the pad at the same level or slightly
higher than the filter system equipment pad.

Note: Be sure that the pad is pitched not more than 1/4
in. per foot in any direction as needed for runoff.

Drainage and Condensation

Condensation occurs from the evaporator coil while the
unit is running, and drains at a steady rate (usually three
to five gallons per hour), depending upon ambient air
temperature and humidity. The more humid the ambient
conditions, the more condensation will be produced.

The bottom of the unit acts as a tray to catch rainwater
and condensation. Keep the drain holes, located on the
bottom pan of the base of the unit, clear of debris.

Roof Run Off

Make sure the heat pump is not located where large
amounts of water may run-off from a roof into the unit.

Sharp sloping roofs without gutters will allow massive
amounts of rain water, mixed with debris from the roof
to be forced through the unit. A gutter or down spout
may be needed to protect the heat pump.

Lawn Sprinklers

Avoid placing lawn sprinkler near the heater ­they can spray water into the heater and void the
warranty.

Be sure to direct any spraying water away

from the heater. Note the wind direction to be sure
water from sprinklers is not blown toward the heater.

Sprinkler heads can produce high water pressure and
spray at an angle, different from typical rain and humid
weather. Also, sprinklers connected to a well water
system can cause mineral build up on the evaporator
coils and electronics. Salt water can also be an issue if
located near the coast.

Heat Pump Dimensions

MODEL DIMENSION “A”

70

90

100

120

UltraTemp

®

33.5”

(851 mm)

33.5”

(851 mm)

45.5”

(1156 mm)

45.5”

(1156 mm)

Heat Pump Installation and User’s Guide

MODEL DIMENSION “A”

120
H/C

120C

100I

90I

45.5”

(1156 mm)

45.5”

(1156 mm)

41.5”

(1054 mm)

33.5”

(851 mm)

NO SPRINKLERS

Location and Clearances

3

All criteria given in the following sections reflect minimum
clearances. However, each installation must also be
evaluated, taking into account the prevailing local
conditions such as proximity and height of walls, and
proximity to public access areas.

The heat pump must be placed to provide clearances on
all sides for maintenance and inspection.

1. Atleast24in.[610mm]accessmustbeavailablein

thefrontand12in.[30.5mm]onalltheothersides

of the heat pump for service and proper air flow.
(Manufacturer’s recommendation).

2. If the heat pump is to be installed under a
cover or under a vertical overhang, the unit
must have a minimum of five (5) feet [1520

mm]clearancefromthetopoftheheatpump.

(Manufacturer’s recommendation).

3. Install a minimum of ve (5) feet [1.52 m] from

the inside wall of the pool or spa unless the heat
pump is separated from the pool or spa by a five
(5) foot high solid fence or other permanent barrier.
Canadian installations require a minimum of three
(3) meters from pool water.

4. Installheatpumpaminimumof6in.[153mm]from

the wall of the house.

OPEN

AIR FLOW OUT

EVAPORATOR

COILS

OVER HANG

5

FT min.

(1520 mm)

12"

min.

(305 mm)

SLAB

12"

min.

(305 mm)

Heat Pump Location and Clearances

Anchor Clamp Installation

Installation of the anchor clamps is recommended in
all installations. Installation of the anchor clamps is
required in Florida (see Florida Building Code 301.13).

Anchor clamps hold the heat pump to the equipment
pad in order to withstand high winds caused during
extreme weather (i.e. hurricanes).

To install the anchor clamps:

1. Be sure the heat pump is in its permanent location
on the equipment pad.

2. Place the clamps at the base of the heat pump in
the four (4) locations, shown in the image below.

Note: Bolts and bolt anchors are not included with
the heat pump. The installer must provide 1/4” x
1-3/8” stainless steel anchor bolts and the appro­priate size concrete anchor to mount the clamp to
the equipment pad. Be sure to check local codes.

3. Fit the hook of each clamp over the lip on the
base panel of the heat pump. The hook should fit
between the lip of the base panel and the evapo­rator coil guard.

SERVICE
ACCESS

24" min.

(610 mm)

3"

(76 mm)

SLAB

Heat Pump

Clamps

Anchor Clamp Installation

UltraTemp

®

Heat Pump Installation and User’s Guide

6

"

min.

(153 mm)

AIR
FLOW
IN

Heat Pump

Clamps

4

HEAT PUMP

CHEMICAL FEEDER
OR CHLORINATOR

TO POOL OR SPA

POOL PUMP

FROM POOL OR SPA

FILTER

MANUAL BYPASS VALVE

(Optional)

Anchor Clamp Installation, Continued

4. Mark the position of the hole in each clamp on the
equipment pad.

5. Use a masonry drill bit and drill a hole in the
cement with a diameter as determined by the
concrete anchor, at each of the marks on the
equipment pad. The hole should be approximately
1½ in. deep.

6. Insert a bolt anchor into each of the holes. Be sure
the anchors are set completely into the holes.

7. Position the anchor clamps so that the holes in the
clamps are over the bolt anchors.

Be sure that the clamp hooks are over the lip of

the heat pump base.

8. Insert an anchor bolt through each clamp into the
anchor and tighten to secure the clamp and heat
pump to the equipment pad.

AIR COIL GUARD

AIR

COIL

1-3/8" HEX BOLT

(installer provided)

HEAT PUMP

HEAT PUMP

BASE

CONCRETE

EQUIPMENT PAD

Anchor Clamp Installation

ANCHOR CLAMP

BOLT ANCHOR

(installer provided)

Water Connections and Plumbing

The image below shows the standard plumbing layout
with a single heat pump unit. Follow the image below

from right to left for the standard plumbing sequence.

Arrangement of pool system components (other than the
standard plumbing image below), and the location of the
heat pump (above or below the pool water surface) can
affect the operation of the heat pump’s water pressure
switch.

Location of the heat pump above or below the pool water
surface can also affect operation of the switch.

The pressure switch can be adjusted to accommodate
this effect if the heat pump water connections are no

morethansix(6)feetbelowthepoolwatersurface.

See instructions for pressure switch adjustment on the
next page. If the heat pump is installed outside of this
range, an external pressure switch may need to be
installed in the plumbing upstream of the heat pump.

Note: Be advised that when pool equipment is located
below the pool surface a leak can result in large-scale
water loss or flooding. Pentair is not responsible for such

water loss or flooding or damage.

Automatic Flow Control Valve

The inlet/outlet header of the heat pump comes
equipped with an internal automatic flow control valve.

The automatic flow control valve maintains the proper
flow through the heat pump at rates up to 120 gpm

(456lpm).Iftheltersystemowrateishigherthan
120gpm(456lpm),installamanualbypassvalve,see

image below*.
Note: Be advised that if your circulation pump is over

2HPorifthetotalowexceeds120gpm(456lpm),

you will have to add an external bypass valve. Excess
water flow will damage the heat exchanger.

UltraTemp

Standard Plumbing Layout

*

To Pool < Chlorinator or Chemical Feeder < Heat Pump < Filter < Pump < Skimmer and Main Drain < From Pool

®

Heat Pump Installation and User’s Guide

Water Connections to the Heat Pump

5

Two inch Quick Connect fittings have been installed on
the water inlet and outlet connections. Filtered cool water
is plumbed to the inlet, located on the right side of the
heat pump. Heated water flows through the outlet, located
on the left side of the heat pump.

Plastic piping (PVC Schedule 40) should be connected
to the heat pump. The unions, provided with the unit,
accept 2 in. PVC pipe.

WATER

WATER
OUTLET UNION

Heat Pump Water Connections

Always be sure that flow requirements and pool
water turnover rates can be maintained with the
installation of additional heat pumps and plumbing
restrictions.

INLET UNION

Water Pressure Switch Adjustment

The pressure switch is preset at the factory for

activationat1.5psi[10kPa].Thisfactorysetting

works for most basic installations. Only adjust the
water pressure switch if the heat pump does not
operate when the proper flow is applied to unit

or if the heat pump does not shut off when the filter
pump is off.

Occasionally, unusual plumbing configurations or
necessary restrictions in the plumbing may cause
pressure sensing problems. In these rare situations,
the plumbing system configuration may require
adjustment of the water pressure switch.

Adjustment of the pressure switch may be necessary

ifanypartoftheltersystempipingis3feet[0.91m]

or more above the top of the heat pump.

Ingeneral,iftheheatpumpisinstalledmorethan6
feet[1.83m]belowthepoolsurface,anexternalwater

flow switch must be added to the plumbing system.

The water pressure switch should be adjusted to

turn the heater off when the pump is off. Setting the
switch to close at too low of a flow can damage the appliance. Adjust the
switch to turn the heater off, not on.

On some installations, the piping from the heat pump
to the pool is very short. The back pressure could be
too low to trigger the pressure switch. If this happens,
install a directional fitting or elbow where the return
line enters the pool. This will increase back pressure for
the heat pump to operate properly. Be sure to check that
the system flow is above the minimum requirement of 30
gpm (110 lpm) after the directional fitting installation.

Be sure the pool fi lter is clean before making any
pressure switch adjustment: A dirty fi lter will restrict
the water fl ow and the pressure switch cannot be
adjusted properly.

Adjusting the Pressure Switch
The following adjustment is for installations where

the heat pump is below pool water level.

1. Be sure that all valves in the system are set to allow
water flow through the heat pump. Start the filter
pump.

2. Set the heat pump temperature above the actual
temperature to call for heat. Turn the heat Pump ON.

3. Once the heat pump is running, turn off the filter
pump. The heat pump should turn off immediately.

4. If the heat pump continues to operate when the filter
pump is off, then the water pressure switch needs to
be adjusted.

5. Remove the heat pump’s left front panel and remove
remaining right front panel. The water pressure switch
is located in the water plumbing in the lower right
corner of the heat pump.

6. Slowly rotate the adjustment wheel on the water

pressure switch in a clockwise direction until the
“LOW WATER FLOW” Alarm shows on the LCD,
the Red Service LED turns ON, and the heat pump
stops.

7. Check the setting of the water pressure switch by
starting and stopping the filter pump and checking
the control panel and operation of the heater between
each flow change.

8. If the water pressure switch cannot be adjusted to
accommodate the conditions listed above, an external
flow switch must be added to the plumbing system
to ensure that the heat pump will not operate without
the proper flow through the heat exchanger.

The following adjustment is for installations where
the heat pump is above pool water level.

1. Be sure that all valves in the system are set to
allow water flow through the heat pump. Start the
filter pump.

2. Set the heat pump temperature above the actual
temperature to call for heat. Turn the heat Pump
ON.

3. If the LCD shows a “LOW WATER FLOW” Alarm
and Red Service LED is present then the water
pressure switch needs to be adjusted.

UltraTemp

®

Heat Pump Installation and User’s Guide

6

FROM SOLAR

R

S

A

SPA

OOL

A

OOL

N

Extend 12" (305 mm)

past end heater

inlet for hydraulic

balancing

Extend 12" (305 mm)
past end heater
inlet for hydraulic
balancing

Pool Pump

Flow Meter

Minimum

2" PVC Pipe

2" PVC Pipe

Flow Meter

To Pool

OPTIONAL

2" Check Valve Bypass

Check Valves are
optional on heater inlets
but will help system
balancing

60 GPM (220 lpm)

Minimum

24"

(610 mm)

(153 mm)

12"

(305 mm)

6"

Water Pressure Switch Adjustment,
Continued

4. Remove the heat pump’s left front panel and
remove remaining right front panel. The water
pressure switch is located in the water plumbing in
the lower right corner of the heat pump.

5. Slowly rotate the adjustment wheel on the water
pressure switch in a counterclockwise direction
until the “LOW WATER FLOW” Alarm and Red
Service LED vanish, time delay countdown will
start.

6. Oncetheheatpumpisrunning,turnoffthelter

pump. The heat pump should turn off immediately.

7. If the heat pump continues to operate when the
filter pump is off, turn the adjustment wheel on the
water pressure switch in a clockwise direction until
the “LOW WATER FLOW” Alarm shows on the
LCD, the Red Service LED turns ON, and the heat
pump stops.

8. Check the setting of the water pressure switch by
starting and stopping the filter pump and checking
the control panel and operation of the heater
between each flow change.

9. If the water pressure switch cannot be adjusted
to accommodate the conditions listed above,
an external flow switch must be added to the
plumbing system to ensure that the heat pump will
not operate without the proper flow through the
heat exchanger.

12"

(305 mm)

min.

Multiple Unit Installation

1. Heat Pump, Heater and/or Solar Combination

In certain regions of the country it may be more
economical to run a heat pump during the warmer months
and a gas heater during the cooler months. In some
situations it may be desirable to run the heat pump in the
“Chiller” mode, if so equipped, during the hottest portion
of the year and a heater during the cooler months. The
Pentair heat pump may be used in conjunction with a
gas or electric heater or any combination of heat sources
including solar. All heat sources must be plumbed in
series to work correctly and efficiently.

A recommended plumbing layout for a heat pump /
heater / solar combination heating system for a pool /
spa combination is shown below. Your system may not
contain all of these components, but the basic plumbing
will apply by eliminating the component in the illustration
that is not a part of your system.

2. Multiple Heat Pump Connections

All plumbing on multiple heat pump installations must be
done in parallel (see image below). An equal flow of water
to each heat pump is important for optimum operation.

Note: It may be necessary to adjust the water pressure
switch if a unit is installed below the water level. Refer
back to page 5 for details on when and how to adjust
the pressure switch.

Each heat pump allows a maximum fl ow rate of
100 gpm (380 lpm) and requires a minimum of 30
gpm (110 lpm).

UltraTemp

P

SPA
MAKE-UP

FILTE

P

RETUR

P

®

Heat Pump Installation and User’s Guide

CHECK

VALVE

SP

POOL
DRAIN

SPA
DRAIN

PUMP

HEAT PUMP

CHECK

VALVE

FROM SOLAR

TO SOLAR

Multiple Unit Installation:
Heater and/or Solar Combination

Extend 12" (305 mm)

past end heater

inlet for hydraulic

balancing

Extend 12" (305 mm)
past end heater
inlet for hydraulic
balancing

Pool Pump

Flow Meter

Minimum

2" PVC Pipe

2" PVC Pipe

Flow Meter

To Pool

OPTIONAL

2" Check Valve Bypass

Check Valves are
optional on heater inlets
but will help system
balancing

60 GPM (220 lpm)

Minimum

24"

(610 mm)

(153 mm)

12"

(305 mm)

6"

Multiple Unit Installation

6"

(153 mm)

7

12"

(305 mm)

To Pool

Extend 12" (305 mm)

past end heater

inlet for hydraulic

balancing

Flow Meter

6"

(153 mm)

24"

(610 mm)

2" Check Valve Bypass

Two Heat Pump Plumbing Layout

OPTIONAL

12"

(305 mm)

2" PVC Pipe

Flow Meter

Minimum

2" PVC Pipe

Check Valves are
optional on heater inlets
but will help system
balancing

Extend 12" (305 mm)
past end heater
inlet for hydraulic
balancing

60 GPM (220 lpm)

Minimum

Pool Pump

24" (610 mm) min.
clearance for
service access.

Extend 12"

(305 mm) past

end heater

inlet for hydraulic

balancing

To Pool

2" PVC Pipe

Flow Meter

2" PVC Pipe

3" PVC Pipe3" PVC Pipe

3" Ball Valve Bypass

Minimum

3" PVC Pipe

Four Heat Pump Plumbing Layout

2" PVC Pipe2" PVC Pipe

Flow Meter

UltraTemp

Check Valves are
optional on heater inlets
but will help for system
balancing

Extend 12" (305 mm)
past end heater
inlet for hydraulic
balancing

120 GPM (456 lpm)

Minimum

Pool Pump

®

Heat Pump Installation and User’s Guide

8

Electrical Connections and Wiring

RISK OF ELECTRICAL SHOCK OR ELECTROCUTION.

This heat pump contains wiring that carries high voltage. Contact with these wires could result in death or serious injury to pool or
spa users, installers, or others due to electrical shock, and may also cause damage to property. Always disconnect power circuit
before connecting the heat pump

Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper and dangerous operation. Verify
proper operation after servicing.

General Information

Wiring connections must be made exactly as shown
in the wiring diagram found on the inside of the heat
pump access panel; see the wiring diagrams on
pages 9-11.

The heat pump must include a definite means of
grounding and bonding. There is a ground lug inside
the heat pump electrical compartment and a bonding
lug on the left side of the heat pump.

Bonding

The National Electrical Code and most other codes
require that all metallic components of a pool structure,
including reinforcing steel, metal fittings, and above
ground equipment be bonded together with a solid
copper conductor not smaller than 8 AWG. The heat
pump, along with pumps and other pool equipment
must be connected to this bonding grid. A bonding lug
is provided on the left side of the heat pump to ensure
this requirement is met.

This heater must be connected to a bonding grid
with a solid copper wire not smaller in diameter
than 8 ga.

Main Power

Electrical wiring to the heat pump must be in
accordance with the latest edition of the National
Electric Code (NEC), ANSI/National Fire Protection
Association (NFPA) 70 in the United States, and in
Canada, the Canadian Electrical Code (CEC) C22.1,
unless local code requirements indicate otherwise.
All wiring must be done by a certified or qualified
electrician.

Be sure the power to the circuit for the heat pump
is turned off.

The following is the procedure to wire the heat pump
to the electrical source:

1. Remove the front left panel of the heat pump
cabinet, (you do not need to remove the torque
head screw at the top left corner).

2. Remove the service panel to the heat pump
electrical compartment. (Front left corner of unit)

3. Electrical supply lines must be run through
watertight conduit. Run the wires and conduit from
the power source and connect them to the conduit
connection on the left side of the heat pump.

4. Connect the power leads to the bottom terminals
on the main compressor contactor as shown in
the wiring diagrams on pages 9-11.

5. Verify that all other contactor wires are secure;
they may have loosened during shipment.

6. Connectthegroundwiretothegroundlug

provided on the bottom of the electrical
compartment.

7. Replace the service panel and reinstall screws to
hold it in place.

8. Replace the front left panel.

9. Connect a copper bonding wire (8 AWG) to the
bonding lug on the left side of the heat pump.

UltraTemp

®

Heat Pump Installation and User’s Guide