AO Smith FPTU50 Installation Manual

Installa on Instruc ons and
O
Use & Care Guide
Hybrid Electric
Heat Pump Water Heater
DO NOT RETURN THIS UNIT TO THE STORE
Read this manual and the labels on the water heater before you install, operate, or service it. If you have diffi culty following the direc ons, or aren’t sure you can safely and properly do any of this work yourself:
• Call our Technical Assistance Hotline at 1-800-527-1953 . We can help you with
installation, operations, troubleshooting, or maintenance. Before you call, write down the model and serial number from the water heater’s data plate.
Incorrect installa on, opera on, or service can damage the water heater, your house and other property, and present risks including fi re, scalding, electric shock, and explosion, causing serious injury or death.
LOW LEAD
NTENT
C
Table of Contents Page
IMPORTANT SAFETY INFORMATION ................................. 3
GETTING STARTED ............................................................6
INSTALLATION ................................................................... 7
DIAGNOSTIC CODES ........................................................ 20
TROUBLESHOOTING CHART ...........................................22
MAINTENANCE ............................................................... 25
REPAIR PARTS ILLUSTRATION ..........................................30
NOTES ............................................................................. 31
Keep this manual in the pocket on heater for future reference whenever maintenance, adjustment or service is required.
April 2015
100264133
COMPLETED INSTALLATION TYPICAL
Air Filter
Connectivity Port
User Interface Module (UIM)
xxxxx
xxxxx
xxxxx
xxxxx
Condensate Drain Access Cover (See Figure 15, p.11)
Temperature and Pressure Relief Valve
Upper Element and ECO
Discharge Pipe (Do Not Cap or Plug)
Lower Element
Shut-off Valve (Hot)
Hot
(Outlet)
Primary Condensate Drain (3/4” PVC)
Thermal Expansion Tank
Cold
(Inlet)
Drain Valve
Drain LineSuitable Drain Pan
2 Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
Drain
Shut-off Valve (Cold)
IMPORTANT SAFETY INFORMATION
Read and follow all safety messages and instruc ons in this manual.
This is the safety alert symbol. It is used to alert you to poten al physical injury hazards. Obey all safety mes- sages that follow this symbol to avoid possible property damage, serious injury or death. Do not remove any
permanent instruc ons, labels, or the data plate from either the outside of the water heater or on the inside of the access panels. Keep this manual near the water heater.
DANGER indicates hazardous
DANGER
WARNING
situa on that, if not avoided, will result in death or serious injury.
WARNING indicates a hazardous situa on that, if not avoided, could result in death or serious injury.
Important informa on to keep
SAFETY
Fill out this sec on and keep this manual in the pocket of the water heater for reference.
Date Purchased:
Model number:
Serial number:
Maintenance performed:* Date:
CAUTION indicates a hazardous
CAUTION
NOTICE
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 one or more chemicals known to the
State of California to cause cancer, birth defects, or other reproduc ve harm.
This appliance can cause low-level exposure to some of the substances included in the Act.
situa on that, if not avoided, could result in minor or moderate injury.
NOTICE indicates prac ces not related to physical injury.
*Drain and fl ush tank, clean air fi lter, clean condensate pan, and remove and inspect anode rod a er fi rst six months of opera on and at least annually therea er. Operate the Temperature and Pressure Relief Valve (T&P) annu­ally and inspect T&P valve every 2-4 years (see the label on the T&P valve for maintenance schedule). See the Main­tenance sec on for more informa on about maintaining this water heater.
Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide • 3
IMPORTANT SAFETY INFORMATION
o reduce the risk of property
T
damage, serious injury or death,
read and follow the precau ons below,
SAFETY
all labels on the water heater, and the safety messages and instruc ons throughout this manual.
RISKS DURING INSTALLATION AND MAINTENANCE
Electric Shock Risk
Contact with the electrical parts in the junction box,
behind the access doors and inside the top shroud can result in severe injury or death from electrical shock:
• Disconnect power by opening the
circuit breaker or removing the fuses before installing or servicing.
• Use a non-contact circuit tester to
confirm that power is off before working on or near any electrical parts.
• Replace the junction box cover and
access doors after servicing.
Lifting Risk
WARNING! The
water heater is heavy. Follow these
precau ons to reduce the risk of property damage, injuries from li ing or impact injuries from dropping the water heater.
• Use at least two people to lift the
water heater.
• Be sure you both have a good grip
before lifting.
• Unit is top heavy, u se an appli-
ance dolly (with strap) to move the water heater.
RISKS DURING OPERATION
Scalding Risk
This water heater can make water hot
enough to cause severe burns instantly, resulting in severe injury or death.
• Feel water before bathing or s how-
ering
• To reduce the risk of scalding,
install Thermostatic Mixing Valves (temperature limiting valves) at each point-of-use. These valves automatically mix hot and cold water to limit the temperature at the tap. Mixing valves are available
from your local plumbing supplier . Follow manufacturer’s instructions for installation and adjustment of the valves.
• The User Interface Module (UIM)
on this water heater have been fac­tory set to approximately 120°F to reduce the risk of scalding. Higher temperatures increase the risk of scalding, but even at 120°F, hot water can scald. If you choose a higher temperature, Thermostatic Mixing Valves located at each point­of-use are particularly important to help avoid scalding.
Temperature Time to Produce a
Serious Burn
120°F (49°C) More than 5 minutes
125°F (52°C) 1½ to 2 minutes
130°F (54°C) About 30 seconds
135°F (57°C) About 10 seconds
140°F (60°C) Less than 5 seconds
145°F (63°C) Less than 3 seconds
150°F (66°C) About 1½ seconds
155°F (68°C) About 1 second
For informa on about changing the factory thermostat se ng(s), refer to the “Adjus ng Temperature” sec on in this manual (“Step 13” on page 16).
Even if you set the water heater thermostat(s) to a low se ng, higher temperatures may occur in certain circumstances:
• In some cases, repeated small draws of water can cause the hot and cold water in the tank to “stack” in layers. If this happens, the water can be as much as thirty degrees hotter than the thermo­stat setting. This temperature varia­tion is the result of your usage pat­tern and is not a malfunction.
• Water temperature will be hot­ter if someone adjusted the thermostat(s) to a higher setting.
• Problems with the thermostat(s), or other malfunctions may result in higher than expected water tem­peratures.
• If the water heater is in a hot envi­ronment, the water in the tank can become as hot as the surrounding air, regardless of the thermostat setting.
• If the water supplied to the water heater is pre-heated (for example, by a solar system) the temperature in the tank may be higher than the water heater’s thermostat setting.
To reduce the risk of unusually hot water reaching the fi xtures in the house, install Thermosta c Mixing Valves at each point-of-use.
If anyone in your home is at par cular risk of scalding (for example, the el­derly, children, or people with disabili­ es) or if there is a local code or state law requiring a certain water tempera­ture at the hot water tap, then these precau ons are par cularly important.
4 • Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
IMPORTANT SAFETY INFORMATION
According to a na onal standard American Society of Sanitary Engineer­ing (ASSE 1070) and most local plumbing codes, the water heater’s thermostat should not be used as the sole means to regulate water temperature and avoid scalds.
Properly adjusted Thermosta c Mixing Valves installed at each point-of-use al­low you to set the tank temperature to a higher se ng without increasing risk of scalds. A higher temperature se ng allows the tank to provide much more hot water and can help provide proper water temperatures for appliances such as dishwashers and washing machines. Higher tank temperatures (140°F) also kill bacteria that cause a condi­ on known as “smelly water” and can reduce the levels of bacteria that cause water-borne diseases.
Water Contamination Risk
Do not use chemicals that could con­taminate the potable water supply. Do not use piping that has been treated with chromates, boiler seal, or other chemicals.
Fire Risk
To reduce the risk of a fire that could destroy your home and serious-
ly injure or kill people:
• D o not store things that can burn easily such as paper or clothes next to the water heater.
• Be sure the junction box cover and the access door covers are in place. These covers keep debris from entering and potentially being ignit­ed, and help keep any internal fires from spreading.
• Keep the water heater from becom­ing wet. Immediately shut the water heater off and have it inspected by a qualified person if you find that the wiring, thermostat(s) or surround­ing insulation have been exposed to water in any way (e.g., leaks from plumbing, leaks from the water heater itself can damage property and could cause a fire risk). If the water heater is subjected to flood conditions or the thermostat(s) have been submerged in water, the entire water heater must be replaced.
• Make electrical connections prop­erly, according to the instructions on page 15. Use 10 gauge solid copper wire. Use a UL listed or CSA approved strain relief. Connect ground wire to green ground screw.
Explosion Risk
High temperatures and pressures in the water
heater tank can cause an explosion resulting in property damage, serious injury or death. A new Temperature and Pressure (T&P) Relief Valve is included with your water heater to reduce risk of explosion by discharging hot water. Additional temperature and pressure protective equipment may be required by local codes.
A nationally recognized testing labora­tory maintains periodic inspection of the valve production process and certi­fies that it meets the requirements for Relief Valves for Hot Water Supply Systems, ANSI Z21.22. The T&P Relief Valve’s relief pressure must not exceed the working pressure rating of the wa­ter heater as stated on the rating plate.
Maintain the T&P Relief Valve properly. Follow the maintenance instructions provided by the manufacturer of the T&P Relief Valve (label attached to T&P Relief Valve) and the procedure on page 31.
An explosion could occur if the T&P Relief Valve or discharge pipe is blocked. Do not cap or plug the T&P Relief Valve or discharge pipe.
Fire and Explosion Risk if Hot Water is Not Used for Two Weeks or More
C AUTION! Hydrogen gas builds up in a hot water system when it is not used for a long period (two weeks or more). Hydrogen gas is extremely fl ammable. If the hot water system has not been used for two weeks or more, open a hot water faucet for several minutes at the kitchen sink before using any elec­trical appliances connected to the hot water system. Do not smoke or have an open fl ame or other igni on source near the faucet while it is open.
SAFETY
Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide • 5
GETTING STARTED
Figure 1 -  Flexible connectors use compres­sion fittings and do not require soldering.
Figure 2 -  Use a non-contact circuit tester to insure that the power is off before you work on a circuit.
GETTING STARTED
Figure 3 -  Install a Pressure Reducing Valve set to 50 to 60 PSI.
Review all of the instruc ons
1
before you begin work. Improper installa on can
damage the water heater, your home and other property, and can present risks of serious injury or death.
Check with your local and
2
state authori es for any local
or state codes that apply to your area. In the absence of local and state codes, follow Na onal Fire Protec on Associa on (NFPA-70) and the current edi ons of the Na onal Electric Code (NEC) and the Interna­ onal Plumbing Code (IPC). The instruc ons in this manual comply with na onal codes, but the installer is responsible for complying with local codes.
Massachuse s code requires this wa- ter heater to be installed in accordance with Massachuse s 248-CMR 2.00 and 248-CMR 5.00: State Plumbing Code. Other local and state authori es may have similar requirements or other codes applicable to the installa on of this water heater.
• Teflon® tape or pipe joint com­pound approved for potable water
• Tools to make the electrical connec­tions (for example, screwdrivers, wire strippers)
• Non-Contact circuit tester to check for power (Figure 2)
• Water Pressure Gauge (Figure 6 on page 7)
Recommended Accessories:
• Suitable drain pan (Figure 8 on page
8)
• Automatic leak detection and shut­off device
• Pressure Reducing Valve (Figure 3 on page 6)
• Thermal Expansion Tank (Figure 7 on page 7)
• Point-of-use Thermostatic Mixing Valves (Figure 9 on page 8)
• 1/2” Flexible tubing for Condensate Overflow (Figure 4 on page 6)
Before you start, be sure you
3
have, and know how to use, the following tools and supplies:
• Plumbing tools and supplies appro-
Figure 4 - Condensate overflow flexible tubing.
Elbow
3/4” OD
To Main
Drain Connection
3/4” ID
3/4” OD
Pipe
Figure 5 - Main Drain Connection piping.
6 • Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
priate for the type of water pipes in your home
• Threaded connectors (Figure 1) for the cold and hot water pipes
• For homes plumbed with plastic pipe, use threaded connectors suit­able for the specific type of plastic pipe used: CPVC and PEX (cross­linked polyethylene). Do not use PVC pipe.
• For homes with copper pipes, you may purchase connector kits with compression fittings that don’t
require soldering (Figure 1). Com­pression fittings are easier to install than soldering copper pipes.
• 90° Elbow with 3/4” Female
Unthreaded Socket End X 3/4” Male NPT Threaded End (Figure 5 on page 6)
• 3/4” OD Plastic Pipe for Condensate Drain (Figure 5 on page 6)
INSTALLATION
Follow these steps for proper installa on:
Step 1:
Verify that your
home is equipped
and up-to-date for proper opera on
Installing a new water heater is the perfect  me to examine your home’s plumbing system and make sure the system is up to current code standards. There have likely been plumbing code changes since the old water heater was installed. We recommend installing the following accessories and any other needed changes to bring your home up to the latest code requirements.
Use this checklist and inspect your home. Install any devices you need to comply with codes and assure that your new water heater performs at its best. Check with your local plumbing offi cial for more informa on.
Water pressure
We recommend checking your home’s water pressure with a pressure gauge (Figure 6). Most codes allow a maximum incoming water pressure of 80 psi. We recommend a working pres­sure no higher than 50-60 psi.
HOW: Purchase an inexpensive water pressure gauge available at your local plumbing supplier . Connect the Water Pressure Gauge to an outside faucet and measure the maximum water pressure experienced throughout the day (highest water pressures o en oc- cur at night).
Figure 6 -  Use a Water Pressure Gauge to make sure your home’s water pressure is not too high.
To limit your home’s water pressure: Locate your home’s Pressure Reduc­ing Valve (PRV) on the main incoming (cold) water supply line and adjust the water pressure control to between 50 and 60 psi. If your home does not have a Pressure Reducing Valve, install a PRV on the home’s main water supply line and set it to between 50 and 60 psi. Pressure Reducing Valves are avail­able at your local plumbing supplier .
BACKGROUND: Over the years, many u li es have increased water sup- ply pressures so they can serve more homes. In some homes today, pres­sures exceed 100 psi. High water pressures can damage water heaters, causing premature leaks. If you have replaced toilet valves, had a water heater leak, or had to repair applianc­es connected to the plumbing system, pay par cular a en on to your home’s water pressure. When purchasing a PRV, make sure the PRV has a built-in bypass.
Water pressure
increase caused by
thermal expansion
Verify that you have a properly sized Thermal Expansion Tank (Figure 7). We recommend installing an expansion tank if your home does not have one. Codes require a properly pressurized, properly sized Thermal Expansion Tank in almost all homes. (See illustra on on inside front cover.)
Figure 7 -  A Thermal Expansion Tank helps protect the home’s plumbing system from
pressure spikes.
HOW: Connect the Thermal Expansion Tank (available at your local plumbing supplier ) to the cold water supply line near the water heater. The expansion tank contains a bladder and an air charge. To work properly, the Thermal Expansion Tank must be sized accord­ing to the water heater’s tank capacity and pressurized to match the home’s incoming water pressure. Refer to the installa on instruc ons provided with the Thermal Expansion Tank for instal­la on details.
INSTALLATION
Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide 7
NOTE: Water heater must be level!
INSTALLATION
INSTALLATION
BACKGROUND: Water expands when
heated, and the increased volume of water must have a place to go, or thermal expansion will cause large increases in water pressure (despite the use of a Pressure Reducing Valve on the home’s main water supply line). The Safe Drinking Water Act of 1974 requires the use of backfl ow preventers and check valves to restrict water from your home reentering the public water system. Backfl ow preventers are o en installed in water meters and may not be readily visible. As a result, most all plumbing systems today are now “closed,” and almost all homes now need a Thermal Expan­sion Tank.
A Thermal Expansion Tank is a prac cal and inexpensive way to help avoid damage to the water heater, washing machine, dishwasher, ice maker and even toilet valves. If your toilet occasionally runs for no appar­ent reason (usually briefl y at night), that may be due to thermal expansion increasing the water pressure tempo­rarily.
Water pipe and
tank leaks
Leaks from plumbing pipes or from the water heater itself can damage property and could cause a fi re risk.
• Install an automatic leak detec­tion and shutoff device (available at your local plumbing supplier). These devices can detect water leaks and can shut off the water heater’s water supply if a leak occurs.
Figure 8 -  A suitable drain pan piped to an adequate drain can help protect flooring from leaks and drips.
• Install a suitable drain pan (avail­able at your local plumbing suppli­er) under the water heater (Figure
8) to catch condensation or leaks in the piping connections or tank. Most codes require and we recom­mend installing the water heater in a drain pan that is piped to an ade­quate drain. The drain pan must be at least two inches wider than the diameter of the water heater. Install the drain pan so the water level would be limited to a maxi­mum depth of 1-3/4”.
Water tempera-
ture regula on
Figure 9 -  Thermostatic Mixing Valves installed at each point -of-use can help prevent scalds.
Install Thermosta c Mixing Valves (Figure 9) to regulate the temperature of the water supplied to each point­of-use (for example, kitchen sink, bathroom sink, bath, shower). Con­sult the valve manufacturer’s instruc­ ons or a qualifi ed person.
WARNING! Even if the water heater
thermostat is set to a rela vely low temperature, hot water can scald. Install Thermosta c Mixing Valves at each point-of-use to reduce the risk of scalding (page 4).
BACKGROUND: A Thermosta c Mix-
ing Valve, installed at each point­of-use, mixes hot water from the water heater with cold water to more precisely regulate the temperature of hot water supplied to fi xtures. If you aren’t sure if your plumbing system is equipped with properly installed and adjusted Thermosta c Mixing Valves at each point where hot water is used, contact a qualifi ed person for more informa on.
Step 2:
Verify that the loca on is appropriate
Before installing your water heater, ensure that:
The water heater will be:
1
• Installed indoors close to the center of the plumbing
system.
• In a suitable drain pan piped to an adequate floor drain or external to the building (Figure 8).
• In an area that will not freeze
• In an area that is suitable for install­ing the water heater vertically and on a level surface.
• Install where a typical home appli­ance sound would not cause a dis­turbance
• Should not be used for space heat­ing.
NOTE: Water heater must be level!
8 Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
INSTALLATION
a
The loca on has adequate
2
space (clearances) for period-
ic servicing. For op mal water heater effi ciency, the unit must have unrestricted airfl ow and requires a minimum installa on space of 700 cubic feet. As an example, a room that has an 8 foot tall ceiling and is 10 feet long by 8-3/4 feet wide would contain 700 cubic feet. NOTE: This Heat Pump Water Heater may be located within a required mini­mum of 6” clearance from a wall on the outlet side, however for future service considera ons, a minimum of 3 feet from any obstruc on on the back, le and right side is recommend- ed.
The fl oor can support the
3
weight of a full water heater.
Table 1
Capacity Filled Weight (lbs)
50 Gallon 573 66 Gallon 796 80 Gallon 921
Your area is not prone to
4
earthquakes. If it is, use
special straps as required by local building codes.
NOTICE: The state of California re­quires bracing, anchoring, or strapping the water heater to avoid its moving during an earthquake. Contact local u li es for code requirements in your area, visit h p://www.dsa.dgs.ca.gov, or call 1-916-445-8100 and request instruc ons. Other loca ons may have similar requirements. Check with your local and state authori es.
The loca on is not prone to
5
physical damage by vehicles, ooding, or other risks.
Vehicle Stop
Drain P
n
Figure 10 -  In a garage, install a vehicle stop to avoid water heater damage.
Avoid loca ons such as a cs,
6
upper fl oors, or where a leak
might damage the structure or furnishings. Due to the normal corrosive ac on of water, the tank will eventually leak. To minimize property damage from leaks, inspect and maintain your water heater in accor­dance with this manual’s instruc ons. Inspect the drain pan, pipes, and surrounding area regularly and fi x any leaks found. Drain pans are available at your local plumbing supplier. Leaks are frequently in the plumbing system itself and not the water heater.
The unit cannot be placed into
7
any type of closet or small
enclosure, unless adequate provisions are made for air exchange (vented or louvered doors, etc.).
To ensure op mal perfor-
8
mance and servicability, a
minimum clearance of 6 inches must be maintained from all sides and 6 inches from the top for access to the air fi lter.
Water heaters located in
9
uncondi oned spaces (i.e.,
garages, basements etc.) may require the water piping, condensate piping, and drain piping to be insulated to guard from freezing.
Drain
The air fi lter, condensa on
10
drain and controls must be easily accessable for opera-
on and service.
The site loca on must be
11
free from any corrosive
elements in the atmosphere such as sulfer, fl uorine, sodium and chlorine. These elements are found in aerosol sprays, detergents, bleaches, air fresheners, paint and varnish removers, refrigerants and many other household products. In addi on, excessive dust and lint may eff ect the opera on of the unit, see the Air Filter Maintenence sec on in this manual.
The ambient air temperature
12
must also be considered when
installing this unit. In Effi ciency Mode the air temperature needs to be
above 45°F/7.2°C and below 120°F/48.8°C for heat pump opera on.
If the air temperature falls outside these upper and lower limits, the electrical elements will ac vate to meet the hot water demand and the heat pump does not operate in either Effi ciency or Hybrid Mode.
INSTALLATION
Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide 9
INSTALLATION
INSTALLATION
Step 3:
Removing the old water heater
Read each installa on step
1
and decide if you have the
necessary skills to install the water heater. Only proceed if you can safely perform the work. If you are not comfortable, have a qualifi ed person perform the installa on.
Locate the water heater’s
2
circuit breaker and turn it
OFF (or remove the circuit’s fuses).
On the old water heater,
3
remove the electrical
junction box access panel. Using a non-contact circuit tester, check the wiring to make certain the power is OFF.
WARNING! Working on an ener-
gized circuit can result in severe injury or death from electrical shock.
Disconnect the electrical
4
wires.
Open a hot water faucet and
5
let the hot water run un l it
is cool (This may take 10 minutes or longer).
WARNING! Be sure the water runs
cool before draining the tank to re­duce the risk of scalding.
Connect a garden hose to
6
the drain valve and place the
other end of the hose in a drain, outside, or a bucket. (Note that sediment in the bo om of the tank may clog the valve and prevent it from draining. If you can’t get the tank to drain, contact a qualifi ed person.)
Turn the cold water supply
7
valve OFF.
Open the drain valve on the
8
water heater.
Figure 12 - Draining the old water heater.
Also open a hot water faucet
9
to help the water in the tank
drain faster.
When the tank is empty,
10
discharge pipe. You may be able to reuse the discharge pipe, but do not reuse the old T&P Relief Valve. A new T&P Relief Valve comes installed on your water heater (or on some models, is in the carton with the water heater).
Figure 13 - Removing the T&P Relief Valve
discharge
11
union which can be disconnected with wrenches. If you must cut the water pipes, cut the pipes close to the water heater’s inlet and outlet connec ons, leaving the water pipes as long as possible. If necessary, you can make them shorter later when you install the new water heater.
12
disconnect the Temperature & Pressure (T&P) Relief Valve
pipe.
Disconnect the water pipes. Many water pipes are connected by a threaded
Remove the old water heater.
Figure 11 - Let the hot water run until it is cool.
10 Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide
WARNING! Use two or more people to remove or install water heater. Failure to do so can result in back or other injury.
INSTALLATION
Step 4:
Installing the new water heater
Completely read all instruc-
1
ons before beginning. If you
are not sure you can complete the installa on, DO NOT RETURN THIS UNIT TO THE STORE. Seek assistance from any of the following sources:
• Schedule an appointment with
a qualified person to install your water heater.
• Call our Technical Assistance Hotline
at 1-800-527-1953
Install a suitable drain pan
2
that is piped to an adequate
drain.
Set the water heater in place
3
taking care not to damage the
drain pan.
NOTICE: Most codes require se ng the water heater in a suitable drain pan piped to an adequate drain. The drain pan helps avoid property damage which may occur from condensa on or leaks in the piping connec ons or tank. The drain pan must be at least two inches wider than the diameter of the water heater. Install the drain pan so the water level is limited to a maximum depth of 1-3/4”.
Verify that the water heater is
4
set in place properly. Check
that:
• The T&P Relief Valve will not be in
contact with any electrical parts.
• There is adequate space to install
the T&P Relief Valve discharge pipe and that it can be piped to a sepa­rate drain (and not into the drain pan).
• There is adequate space to install
proper condensate drain piping.
• There is adequate access and space around the water heater for future maintenance. A minimum clearance of 6 inches must be maintained from all sides and 6 inches from the top for access to the air filter.
• Unit is level to allow proper con­densate drainage. An unlevel unit may lead to condensate draining inproperly and resulting in property damage.
DO NOT CONNECT ELECTRICAL
WIRING UNTIL YOU ARE
INSTRUCTED TO DO SO.
NOTICE: Connec ng electrical power
to the tank before it is completely full of water (water must run FULL STREAM from a hot water tap for a full three minutes) will cause the upper hea ng element to burn out.
Step 5:
Connec ng the Conden- sate Pump When Re­quired
NOTE: If no fl oor drain is available or the drain is above the level of the condensate line, a condensate pump must be installed.
Follow condensate drain
1
pump manufacturers instruc­ ons for installa on.
Connec ng the Conden- sate Pump Op onal Overfl ow Shut O Switch
Locate the white 22 AWG wire
1
loop inside the condensate
drain access compartment by removing the 4 screws a aching the condensate drain access cover to the unit. Cut the loop and strip insula on off the 2 ends (Figures 14 & 15 on page
11).
Measure the distance from
2
the condensate drain access
cover to the condensate pump, and cut two 22 AWG wires to correct length and strip the insula on at both ends. Thread both ends through the grommet on the drain pan cover.
Connect these 2 wires to the
3
2 wires on the water heater
using wire nuts or other con­nectors. Reinstall the condensate drain access cover and keep the connec on joints inside of the cover.
Connect the free ends of the
4
2 wires to the shut off switch
on the condensate pump in accordance with the condensate pump manufacturers recommenda ons.
Condensate Pump Wiring Loop
(Loop Located Close to the Drain Connections)
White Wires
From Water Heater
Figure 14 - Wiring Loop for connec on of
Condensate Pump.
22 AWG - White
Wires to Condensate
Pump Overflow
Shut Off Switch
(22 AWG or Larger)
INSTALLATION
Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide 11
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