State Water Heaters Premier Bedienungsanleitung

State – Premier®

Hybrid Electric

Heat Pump Water Heater

Installation

Instructions and

Use & Care Guide

To obtain technical, warranty or service assistance during or after

the installation of this water heater, call toll free

1-800-365-0024

When calling for assistance, please have the following

information ready:

1. Model number

2. 7 Digit product number

3. Serial number

4. Date of installation

5. Place of Purchase

Table of Contents Page

318258-002

April 2012

Water Heater Safety ............................................................................... 2

Installing Your Water Heater .................................................................3-9

Consumer Information ................................................................ 3

Consumer Responsibilities ......................................................... 3

Unpacking Instructions ............................................................ 3-4

Location Requirements ............................................................... 4

Conned Space Installation.......................................................5-6

Water System Piping ................................................................7-8

Temperature & Pressure Relief Valve..................................... 9-10

Electrical Requirements ....................................................... 10-11

Installation Checklist .............................................................................. 12

Operating Your Water Heater ........................................................... 13-15

Before Using ............................................................................. 13

Water Temperature Regulation ................................................. 13

Adjusting the User Interface Module/ Operational Mode .......... 14

Operational Conditions ............................................................. 15

Maintenance of Your Water Heater ..................................................16-17

Temperature and Pressure Relief Valve .................................... 16

Draining and Flushing................................................................ 16

Heating Element Replacement.............................................16-17

Cleaning the Heat Pump ........................................................... 17

Diagnostic Codes .................................................................................. 18

Troubleshooting Chart ........................................................................... 19

Repair Parts Illustration ......................................................................... 20

Notes... ..............................................................................................21-22

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Your safety and the safety of others are very important.

We have provided many important safety messages in this manual and on your appliance. Always read and obey all

safety messages.

This is the safety alert symbol.

This symbol alerts you to potential hazards that can kill or hurt you and others.

All safety messages will follow the safety alert symbol and either the word “DANGER” or

“WARNING.” These words mean:

You can be killed or seriously injured if you don’t

immediately follow instructions.

You can be killed or seriously injured if you don’t

follow instructions.

All safety messages will tell you what the potential hazard is, tell you how to reduce the chance of injury, and tell you

what can happen if the instructions are not followed.

Important Safety Instructions

CAUTION: Hydrogen gas is produced in a hot water system served by this heater that has not been used for a long

period of time (2 weeks or more). Hydrogen gas is extremely ammable. To reduce the risk of injury under these

conditions, it is recommended that the hot water faucet be opened for several minutes at the kitchen sink before

using any electrical appliance connected to the hot water system. When hydrogen is present, there will probably be

an unusual sound such as air escaping through the pipe as the water begins to ow. There should be no smoking or

open ame near the faucet at the time it is open.

The California Safe Drinking Water and Toxic Enforcement Act requires the Governor of California to publish a list of

substances known to the State of California to cause cancer, birth defects, or other reproductive harm, and requires

businesses to warn of potential exposure to such substances.

WARNING: This product contains a chemical known to the State of California to cause cancer, birth defects, or other

reproductive harm.

This appliance can cause low-level exposure to some of the substances included in the Act.

WATER HEATER SAFETY

IMPORTANT: The heat pump portion of this water heater uses R-134a refrigerant. See the data plate on the heat pump

jacket for the charge level.

INSTALLING YOUR WATER HEATER

Consumer Information

This water heater should be installed in accordance with

the local code authority having jurisdiction, the power

company or electric utility, and this installation manual.

In the absence of local code requirements, follow the

regulations set forth in the latest edition of The National

Electric Code, NFPA 70. This is available from the

following:

National Fire Protection Association

1 Batterymarch Park

Quincy, MA 02269

American National Standards Institute

1430 Broadway

New York, NY 10018

Check your phone listings for the local authorities having

jurisdiction over your installation.

Consumer Responsibilities

This manual has been prepared to acquaint you with the

installation, operation and maintenance of your electric heat

pump water heater and to provide important safety information

in these areas.

We urge you to read all of the instructions thoroughly before

attempting the installation or operation of this water heater.

This manual should be kept for future reference.

The manufacturer of this water heater will not be liable for any

damages caused by failure to comply with the installation and

operating instructions outlined in this manual.

If you lack the necessary skills required to properly install this

water heater or you have difculty following the directions, you

should not proceed but have a qualied person perform the

installation of this water heater.

Examples of a qualified person include: licensed plumbers,

authorized electric company personnel, and authorized

service personnel.

Massachusetts code requires this water heater to be installed

in accordance with Massachusetts 248-CMR 2.00: State

Plumbing Code and 248-CMR 5.00.

A data plate identifying your water heater can be found

adjacent to the upper element door. When referring to your

water heater always have the information listed on the data

plate readily available, to include the model and serial number.

Retain your original receipt as proof of purchase.

Basic Operation Fundamentals

The Heat Pump Water Heater (HPWH) is an integrated

heat pump water heater unit, having an 850 watt

compressor and external coil heat exchanger with backup

electric elements (See Figure 1). When in Efciency Mode

the heat pump draws heat from the ambient air in the room

and transfers it to the water in the tank through the coil

heat exchanger. While in Electric Mode the water heater

functions like a standard electric water heater, relying on

the electric elements to heat the water. A Hybrid Mode is

available that relies primarily on the heat pump to heat

the water while the electric elements only function during

high demand periods. (See “Adjusting the User Interface

Module/ Operational Mode” section). The more often

the unit operates using the heat pump, rather than the

elements, the more efcient the unit will be.

The tank capacity of this heat pump water heater is sized to

maximize the use of the heat pump to deliver hot water at

a lower cost as compared to heat pump waters with lower

tank capacities (50 gallons or less.)

The HPWH uses about half the electricity of a comparably

sized conventional electric water heater when operating

in the Efciency Mode, and provides up to ½ ton cooling

capacity and dehumidication. It is designed for indoor,

residential applications for installation in a basement,

garage or utility room (See “Location Requirements”

section).

Ambient Air Cool/Dehumidified Air

Heat Exchanger

(Heat Transfer Coils)

Upper Element

(4500 Watt)

Lower Element

(2000 Watt)

Water Tank

Jacket

Figure 1

Heat Pump Water Heater Basic Operation

Heat Pump

(Transfers heat

from ambient

air to Heat

Exchanger)

Unpacking the Water Heater

WARNING

Excessive Weight Hazard

Use two or more people to move and install

water heater.

Failure to do so can result in back or

other injury.

Removing Packaging Materials

IMPORTANT: Do not remove, cover or deface any

permanent instructions, labels, or the data label from either

the outside of the water heater or on the inside of water

heater panels.

Figure 3

Residential Garage

Installation

Vehicle

Stop

Drain

Pan

NOTE: The water heater shall be located so it is not subject

to physical damage by moving vehicles or area ooding.

State of California

NOTE: The water heater must be braced, anchored, or

strapped to avoid moving during an earthquake. Contact

local utilities for code requirements in your area, visit

http://www.dsa.dgs.ca.gov, or call 1-916-445-8100 and

request instructions.

IMPORTANT: The water heater should be located in an

area where leakage of the tank, connections, condensate

lines or condensate will not result in damage to the area

adjacent to the water heater or to lower floors of the

structure. Due to the normal corrosive action of the water,

the tank will eventually leak after an extended period of

time. Also, any external plumbing leak, including those

from improper installation, may cause early failure of the

tank due to corrosion if not repaired. If the homeowner is

uncomfortable with making the repair a qualified person

should be contacted. A suitable metal drain pan should be

installed under the water heater as shown below, to help

protect the property from damage which may occur from

condensate formation or leaks in the piping connections

or tank. The pan must limit the water level to a maximum

depth of 2-1/2 inches and be two inches wider than the

heater and piped to an adequate drain. Locate the water

heater near a suitable indoor drain. Outside drains are

subject to freezing temperatures which can obstruct

the drain line. The piping should be at least 3/4” ID and

sloped for proper drainage. Under no circumstance will the

manufacturer or seller of this water heater be held liable

for any water damage which is caused by your failure to

follow these instructions.

METAL

DRAIN

PAN

AT LEAST 2” GREATER THAN THE

DIAMETER OF THE WATER HEATER.

PIPED TO AN

ADEQUATE DRAIN

• The water heater must NOT be placed on its side. It

should be transported and stored in an upright position.

• Remove exterior packaging and place installation

components aside.

• Inspect all parts for damage prior to installation and

start-up.

• Completely read all instructions before attempting to

assemble and install this product.

• After installation, dispose of/recycle all packaging

materials.

Location Requirements

Site location

Select a location near the center of the water piping system.

The unit must be installed indoors and in a vertical position

on a level surface. The ooring beneath the water heater

must be able to support the weight of the water heater when

lled with water (See Table 1).

IMPORTANT: The water heater must have unresticted

airow and requires a minimum installation space of 750

cubic feet. As an example, a room that has an eight foot tall

ceiling and is 10 feet long by 9-1/2 feet wide would contain

760 cubic feet. See The Conned Space Installation section

of this manual for installing the water heater in spaces of less

than 750 cubic feet.

NOTE: To ensure optimal performance and efciency a

minimum clearance of six (6) inches from the back, left

and right sides of the water heater must be maintained. A

minimum of 12 inches from the front of the unit should be

maintained for control access. Service clearances of three

(3) feet from the left and right sides are recommended as a

best installation practice.

The water heater should be located in an area not subject

to freezing temperatures. Water heaters located in

unconditioned spaces (i.e., garages, basements, etc.) may

require the water piping, condensate piping, and drain piping

to be insulated to shelter against freezing. The drain and

controls must be easily accessible for operation and service.

The site location must be free from any corrosive elements

in the atmosphere such as sulfur, uorine, and chlorine.

These elements are found in aerosol sprays, detergents,

bleaches, cleaning solvents, air fresheners, paint, and

varnish removers, refrigerants, and many other commercial

and household products. In addition, excessive dust and lint

may affect the operation of the unit (See “Cleaning the Filter”

section).

The ambient air temperature must also be considered

when installing this unit. In Efciency Mode the ambient air

temperature must be above 45°F and below 109°F. If the

ambient air temperature falls outside these upper and lower

limits the electrical elements will activate to meet the hot

water demand and the heat pump does not operate.

NOTE: Local codes and requirements in your area may

require the installation of your water heater be accomplished

in a way that the bottom element is elevated from the

oor at least 18 inches. Ensure that a platform capable of

supporting the combined weight of the water heater and

water is used.

Table 1

Capacity Weight (lbs)

60 Gallon 760

80 Gallon 967

Figure 2

Metal Drain Pan

Installation

OUTLET DUCT

KIT ADAPTER

LOUVERED

GRILLS

MINIMUM

16” X 24”

8 INCH

FLEXIBLE

DUCT

TERMINATION

OR GRILL

CONFINED

SPACE

AIR FLOW

BOOT/COLLAR

AIR FLOW

BOOT/COLLAR

EXTEND DUCT

ABOVE INSULATION

IN ATTIC SPACES

FIGURE 4

Confined Space Installation

The heat pump water heaters covered in this manual require a minimum of 750 cubic feet of installation space. When a space

meeting this minimum requirement is not available these units may be installed in spaces with less than 750 cubic feet (conned

spaces) when provisions are made by installing an accessory Outlet Duct Kit and/or louvered grills as described in this section.

Inlet air will be derived from an alternate location inside the building structure through one or more louvered grills or through a fully

louvered door leading into the conned space. The alternate location from where inlet air will be derived must provide a minimum of

750 cubic feet of space when using this installation method. When the Outlet Duct Kit is installed outlet air from the unit is redirected

to an alternate location. The alternate location to where outlet air will be redirected must also provide a minimum of 750 cubic feet

of space.

Other congurations are possible when using the Outlet Duct Kit (PN 9910006000) and/or the Inlet Duct Kit (PN 9910005000) with

these water heaters. Consult the installation instructions included with the duct kits for additional information. These instructions

are also available on the manufacturer’s web site. Contact the distributor where the water heater was purchased for information on

ordering these duct kits.

Installation

Installation requires ability equivalent to that of a qualied HVAC

installer. Installation skills such as air supply, venting, and duct

installation are required. If you are not qualied and licensed or

certied as required by the authority having jurisdiction to perform

a given task do not attempt installation. Contact a local HVAC

contractor to perform the installation.

Installation must comply with all national, state and local building

codes and agencies having jurisdiction. Check with your local

building code authority if you have any questions regarding code

compliance.

1. Inlet air is derived through louvered grill(s) installed in a door or

wall between the installation space and another space inside

the building structure. The space from where inlet air is derived

must be a minimum of 750 cubic feet. See Figure 4.

2. Installation is permitted in conned spaces between 750 and

610 cubic feet of space using one louvered grill or in spaces

between 610 and 460 cubic feet using two louvered grills. See

Figure 4 and Table 2.

3. For installation in conned spaces of less than 460 cubic feet the

accessory Outlet Duct Kit (PN 9910006000) is required. With

this kit installation is permitted in conned spaces between 460

and 400 cubic feet with one louvered grill or in spaces between

400 and 128 cubic feet with two louvered grills. See Figure 4

and Table 2.

4. Minimum louvered grill size is 16” x 24” for each grill installed.

Fully louvered doors are an acceptable substitute for louvered

grill(s) if the louvered area of the door is not less than the total

required area the grill(s) would provide.

5. Follow the instructions included with the Outlet Duct Kit for the

included duct adapter and ductwork.

6. Eight (8) inch exible ducting is required but not supplied in the

Outlet Duct Kit. Suitable ducting is readily available at home

centers or HVAC supplies.

7. Duct collars and boots may also be required but are not

supplied with the Outlet Duct Kit. Suitable collars and boots are

readily available from home centers or HVAC supplies.

8. The maximum length of duct allowed is 10 feet. This maximum

length must not be exceeded under any circumstances.

9. Ducting should be installed as straightly as possible; there

must be no kinks or attening of the ductwork.

10. The Outlet Duct Kit and connected ductwork must redirect

outlet air from the unit to a location other than the conned

installation space. The alternate location to where the outlet air

is redirected must be a minimum of 750 cubic feet.

ITEM

LOUVERED GRILL

CONFINED SPACE

CONFIGURATION

(door or wall)

MINIMUM SPACE

(cubic feet)610 46040

EXAMPLE ROOM SIZE

H X L X W (feet) 8' x 7.6' x 10' 8' x 5.75' x 10'8' x 10' x 5' 8' x 4' x 4'

WITHOUT DUCTWORK WITH 8 INCH FLEXIBLE DUCT

AND OUTLET DUCT KIT

Table 2

Do not duct air from a garage or other

space where potentially harmful fumes

from solvents, chemicals or exhaust

from automobiles are present into any

other space in the building structure.

Gas and carbon monoxide detectors

are available.

Breathing carbon monoxide can cause brain damage or

death. Always read and understand instruction manual.

Breathing Hazard - Carbon Monoxide Gas

11. The outlet air from a unit installed in a garage or drawing

inlet air from a garage or any area where solvents or other

chemicals that emit potentially harmful fumes are stored or

automobiles are located must never be ducted to any other

space inside the building structure. This would include all

occupied and unoccupied spaces such as attics or basements.

Potentially harmful fumes and vapors could be introduced into

living spaces.

12. A duct termination or grill is required at the end of the duct

run but not supplied with the Outlet Duct Kit. Suitable duct

terminations and grills are readily available from home centers

or HVAC supplies. Terminations must be tted with screens

or designed to prevent rodents, other pests and debris from

entering the ductwork. If terminated outdoors or to another

space where water or moisture may enter the ductwork,

terminations designed to prevent water or moisture inltration

must be used.

13. If outlet ductwork is terminated through a ceiling into an

attic space provision must be made to ensure the ductwork

terminates well above the insulation line in the attic to prevent

insulation from entering the ductwork. A short section of 8 inch

round metal duct may be used with a suitable duct termination.

Overall duct length, including exible and metal duct must not

exceed 10 feet.

14. Ductwork that transitions through walls or ceilings must be

properly sealed to prevent rodent, other pests or moisture

inltration.

Water System Piping

Piping, ttings, and valves should be installed according to

the installation drawing (Figure 5). If the indoor installation

area is subject to freezing temperatures, the water piping

must be properly insulated.

Water supply pressure should be 50-60 PSIG and not

exceed the maximum 80 PSIG. If the supply line pressure

exceeds 80 PSIG, a pressure reducing valve (PRV) with

a bypass should be installed in the cold water supply line.

This should be placed on the supply to the entire house in

order to maintain equal hot and cold water pressures.

IMPORTANT:

• Heat must not be applied to the water fittings on

the heater as they may contain nonmetallic parts. If

solder connections are used, solder the pipe to the

adapter before attaching the adapter to the hot and

cold water fittings.

• Always use a good grade of joint compound and be

certain that all fittings are tight.

IMPORTANT: DO NOT over apply joint compound.

Piping Installation

1. Install the water piping and fittings as shown in Figure

4. Connect the cold water supply (3/4” NPT) to the

fitting marked “Cold”. Connect the hot water supply

(3/4” NPT) to the fitting marked “Hot”.

2. The installation of unions in both the hot and cold

water supply lines are recommended for ease of

removing the water heater for service or replacement.

3. Some local codes may require, and the manufacturer

of this water heater recommends, installing a mixing

valve or an anti-scald device in the domestic hot water

line as shown in Figure 5. These valves reduce the

point-of-use temperature of the hot water by mixing

cold and hot water and are readily available. Contact

a licensed plumber or the local plumbing authority for

more information.

4. Some local codes may require, and the manufacturer

of this water heater recommends, installing a pressure

reducing valve (PRV) in the cold water inlet line where

it enters the residence as shown in Figure 5.

5. If installing the water heater in a closed water system,

install an expansion tank in the cold water line as

specified under “Closed System/Thermal Expansion.”

6. Install a shut off valve in the cold water inlet line. It

should be located close to the water heater and be

easily accessible. Know the location of this valve and

how to shut off the water to the heater.

7. Install a discharge line from the temperature and

pressure relief valve in the opening marked “T & P

RELIEF VALVE”. See Figure 5 and the “Temperature

and Pressure Relief Valve” section.)

8. After piping has been properly connected to the water

heater, open the nearest hot water faucet. Then open

the cold water shut off valve and allow the tank to

completely fill with water. To purge the lines of any

excess air and sediment, keep the hot water faucet

open for 3 minutes after a constant flow of water is

obtained. Close the faucet and check all connections

for leaks.

Vacuum Relief Valve

(when required by local code)

Cold Water

Inlet Valve

Massachusetts: Install a vacuum relief in

cold water line per section 19 MGL 142.

Cold Water

Inlet

Pressure Reducing Valve (PRV)

should be installed where the water

supply enters the residence.

When installed PRVs create a

closed water system, a thermal

expansion tank must be installed.

* If an adequate drain is not available for the condensate drain lines then a condensate pump must be used. DO NOT discharge the condensate drain

lines into the metal drain pan.

In a closed system, use a

thermal expansion tank.

See “Closed System/

Thermal Expansion”

section.

6” Maximum

Air Gap

Shut-off Valve

(Cold)

Cold Water Outlet

Condensate Drain Lines*

Tempered Water to Fixtures

Mixing Valve - Follow the Mixing Valve’s

Manufacturer’s Installation Instructions.

(Set to 120° F)

Untempered Water Outlet

Shut-off Valve (Hot)

Union

Drain Line 3/4”

ID Minimum

Metal Drain Pan 2 1/2”

Depth Maximum and

2 Inches wider than

the water heater.

Discharge Pipe

(Do Not Cap or Plug)

Temperature and

Pressure Relief Valve

Union

Drain

Cold

(Inlet)

Hot

(Outlet)

Optional Heat Trap Piping

Union

Please note the following:

• The system should be installed only with piping that is

suitable for potable (drinkable) water such as copper,

CPVC, or polybutylene. This water heater must not be

installed using iron piping or PVC water piping.

• Use only pumps, valves, or fittings that are compatible

with potable water.

• Use only full flow ball or gate valves. The use of valves

that may cause excessive restriction to water flow is

not recommended.

• Use only 95/5 tin-antimony or other equivalent solder.

Any lead based solder must not be used.

• Piping that has been treated with chromates, boiler

seal, or other chemicals must not be used.

• Chemicals that may contaminate the potable water

supply must not be added to the piping system.

Condensate Drain Line Installation

Install two 1/2” PVC discharge lines from the condensate

drains (located on the right side near the back). The lines

should terminate a maximum of six inches above an

adequate drain. Do not discharge the condensate drain

lines into the metal drain pan. If no floor drain is available

or the drain is above the level of the condensate line, a

condensate pump should be installed. These pumps are

available from local distributors.

When installing the drain line, note the following:

• Plastic pipe or tubing must be used to connect the

condensate drain to a suitable drain or condensate

pump.

• Condensate drain lines should be installed in

conditioned areas only. Install approved insulation on

the condensate drain lines to prevent condensation

from forming on the outside of the drain lines.

Condensation drain lines installed in areas that are

subject to freezing temperatures should be wrapped

with a nationally recognized/listed heat tape. Install per

manufacturer’s instructions.

• Do not connect condensate drain lines with other drain

or discharge lines into a single (common) pipe or line.

Each line (condensate drain line, temperature and

pressure relief valve discharge pipe, etc) should be

independently run to an adequate drain.

• Slope the condensate drain lines toward the inside

floor drain or condensate pump.

• The condensate drain lines and connections to the

drain piping must comply with all local codes.

• Use appropriate primer and glue to cement the

condensate drain lines to the heat pump drain pan.

NOTE: The heat pump drain pan is ABS and the two

condensate drain pipes should be PVC.

• If a condensate pump is installed it should shut off

the heat pump in the event the condensate pump

fails or the float switch in the pump activates (See

“Condensate Pump Installation” section.)

Closed System/Thermal Expansion

Explosion Hazard

If the temperature and pressure relief valve

is dripping or leaking, have a qualified

person replace it.

Examples of a qualified person include:

licensed plumbers, authorized electric

company personnel, and authorized service

personnel.

Do not plug valve.

Do not remove valve.

Failure to follow these instructions can

result in death or explosion.

WARNING

Most public water systems in North America are required

to prevent water flowing from points of use (residences,

businesses, etc.) back into the supply system in order

to maintain water quality. To accomplish this, back flow

preventers such as check valves, are installed in the water

line going to each point of use. Typically the back flow

preventer will be installed at the water meter or inside a

building where the supply line enters the building. This

device allows water to flow into the residence but does

not allow it to flow back into the water supply. This creates

what is known as a “Closed System”. As water is heated

by the water heater, the water in the system attempts to

expand, but has nowhere to go resulting in an increase

in pressure. This increase in pressure in the system may

cause the temperature-pressure relief valve to open to

relieve the pressure. Water will drip from the temperature

and pressure relief valve. Premature tank failure will result

if this condition is not corrected. To prevent this condition, a

properly-sized thermal expansion tank should be installed

in the cold water supply to the water heater as shown in

Figure 4. Failure to install a properly sized expansion tank

in a closed system will void the warranty on the water

heater in the event of tank failure. It is important to follow

the thermal expansion tank manufacturers’ installation

instructions and to adjust the expansion tank pressure

to match the water supply pressure. Contact a plumbing

service agency or your retail supplier regarding the

installation of a thermal expansion tank.

To reduce the risk of excessive pressures and temperatures

in this water heater, install temperature and pressure relief

protective equipment required by local codes, but no less

than a combination temperature and pressure relief valve

certied by a nationally recognized testing laboratory that

maintains periodic inspection of the production of listed

equipment or materials, as meeting the requirements for

Relief Valves and Automatic Shutoff Devices for Hot Water

Supply Systems, ANSI Z21.22 - latest edition. This valve

must be marked with the maximum set pressure not to

exceed the marked maximum working pressure of the

water heater. Install the valve into an opening provided

and marked for this purpose in the water heater, and orient

it or provide tubing so that any discharge from the valve

exits only within 6 inches above drain, or at any distance

below, the structural oor, and does not contact any live

electrical part. The discharge opening must not be blocked

or reduced in size under any circumstance.

IMPORTANT: Only a new temperature and pressure relief

valve should be used with your water heater. Do not use an

old or existing valve as it may be damaged or not adequate

for the working pressure of the new water heater. Do not

place any valve between the relief valve and the tank.

The Temperature & Pressure Relief Valve:

• Shall not be in contact with any electrical part.

• Shall be connected to an adequate discharge line.

• Shall not be rated higher than the working pressure

shown on the data plate of the water heater.

The Discharge Line:

• Shall not be smaller than the pipe size of the relief

valve or have any reducing coupling installed in the

discharge line.

• Shall not be capped, blocked, plugged or contain

any valve between the relief valve and the end of the

discharge line.

• Shall terminate a maximum of six inches above a floor

drain or external to the building. In cold climates, it is

recommended that the discharge pipe be terminated at

an adequate drain inside the building.

• Shall be of material listed for hot water distribution.

• Shall be installed to allow complete drainage of both

the valve and discharge line.

Temperature/Pressure Relief Valve and

Pipe Insulation

1. Locate the temperature and pressure relief valve on the

water heater (also known as a T&P relief valve). See

Figure 6.

2. Locate the slit running the length of the T&P relief valve

insulation.

3. Spread the slit open and t the insulation over the T&P

relief valve. See Figure 7. Apply gentle pressure to the

insulation to ensure that it is fully seated on the T&P Re-

lief Valve. Once seated, secure the insulation with duct

tape, electrical tape, or equivalent.

IMPORTANT: The insulation and tape must not block

the discharge opening or hinder access to the manual

relief lever (Figure 7). Ensure a discharge pipe is in-

stalled into the T&P valve discharge opening per the

instructions in this manual.

Temperature and Pressure

Relief Valve

Explosion Hazard

If the temperature and pressure relief valve

is dripping or leaking, have a qualified

person replace it.

Examples of a qualified person include:

licensed plumbers, authorized electric

company personnel, and authorized service

personnel.

Do not plug valve.

Do not remove valve.

Failure to follow these instructions can

result in death or explosion.

WARNING

6” Maximum

Air Gap

Drain Pan 2 1/2”

Depth Maximum and

2 Inches wider than

the water heater.

Discharge Pipe

(Do Not Plug or Cap)

Temperature and

Pressure Relief Valve

Drain Line 3/4”

ID Minimum Drain

Figure 6

Temperature and Pressure

Relief Valve Installation

For protection against excessive pressures and

temperatures, a temperature and pressure relief valve must

be installed in the opening marked “T & P RELIEF VALVE”

(See Figure 5).

4. Locate the hot water (outlet) & cold water (inlet) pipes

to the water heater.

5. Locate the slit running the length of a section of pipe

insulation.

6. Spread the slit open and slip the insulation over the

cold water (inlet) pipe. Apply gentle pressure along the

length of the insulation to ensure that it is fully seated

around the pipe. Also, ensure that the base of the

insulation is ush with the water heater. Once seated,

secure the insulation with duct tape, electrical tape, or

equivalent.

7. Repeat steps 5 and 6 for the hot water (outlet) pipe.

8. Add additional sections of pipe insulation as needed.

Figure 7

T&P Relief Valve Insulation

T&P Relief Valve

Drain Line

Manual Relief Lever

T&P Relief Valve Insulation

Electrical Requirements

If you lack the necessary skills required to properly install the

electrical wiring to this water heater, do not proceed but have a

qualied electrician perform the installation.

When making the electrical connections, always make sure:

• The electrical service provides 240 VAC to the water heater

for proper operation. DO NOT use 208 VAC.

• Wire sizes and connections comply with all applicable

codes or in the absence of local or state codes follow

NFPA-70, the National Electrical Code-current edition.

• Wiring enclosed in approved conduit (if required by local

codes).

• The water heater and electrical supply are properly

grounded.

• The electrical supply has the proper overload fuse or

breaker protection.

Figures 9A, 9B & 10 are provided as reference drawings.

Always reference the wiring diagram located on the water

heater for the correct electrical connections and connect the

electrical supply to the water heater in accordance with local

utility requirements and codes.

When installing the electrical wiring to the water heater:

1. Although this water heater is equipped with “Dry Fire”

protection circuitry, be sure tank is completely filled with

water, and all air is purged from the tank before making

any electrical connections. See “Draining and Flushing

Section”.

2. Turn off power to the electrical wiring for the water heater at

the circuit breaker/fuse box.

3. Remove the left louvered access panel (when facing the

water heater) by loosening the screws securing it to the

water heater. See figure 8.

4. Loosen the screws securing the electrical junction box

cover to the water heater and set aside.

5. Connect the electrical supply to the water heater.

A standard 1/2 inch opening has been made in the junction

box for conduit connections.

6. Connect ground wire to green ground wire in the electrical

junction box of the water heater.

7. Reinstall the junction box cover.

8. Reattach the left louvered access panel to the water heater

and secure it using the screws loosened earlier.

9. Turn on electrical power to the water heater.

10. Press the power button to turn the water heater on, then

press the Efficiency button to set the operating mode.

NOTE: The water heater will conduct a system diagnostic

(approximately 8 minutes) prior to returning to operation.

11. Once the diagnostic sequence has finished, the fan should

turn on.

NOTE: The heat pump’s fan will not turn on if the incoming

water temperature is less than 59 °F and/or the ambient

air temperature is above 109 °F or below 45 °F. Should the

internal diagnostics detect a problem with the heat pump,

an error message will be displayed.

12. Set the operational mode. For standard installation, the

Hybrid Mode offers the best combination of efficiency

and hot water delivery. For detailed descriptions of all

operational modes see “Adjusting the User Interface

Module/Operational Modes” section.

WARNING

Electric Shock Hazard

Disconnect power before

servicing.

Replace all parts and panels

before operating.

Failure to do so can result in

death or electrical shock.

WARNING

Fire Hazard

Use 10 gauge solid copper

wire.

Use a UL listed or

CSA approved strain relief.

Connect ground wire to green

ground wire.

Failure to do so can result in

death, fire, or electrical shock.

Figure 8

Louvered Panel

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