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INS

TALLA

TION

  Residen  al Hybrid Electric Heat Pump Water Heater Use and Care Guide 

  11

Step 4:

Installing the new
water heater

1

Completely read all instruc-

 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  

 

   

 

2

Install a suitable drain pan 
that is piped to an adequate 
drain. 

3

Set the water heater in place 
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”.

4

Verify that the water heater is 
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 sepa-
rate 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 con-

densate 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 Re-

quired

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.

1

Follow condensate drain 
pump manufacturers instruc-

 ons for installa  on.

Connec  ng the Conden-

sate Pump Op  onal 

Over

fl

 ow Shut O

  

Switch

1

Locate the white 22 AWG wire 
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 
o

  the 2 ends (Figures 14 & 15 on page 

11).

2

Measure the distance from 
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.

3

Connect these 2 wires to the 
2 wires on the water heater 
using wire nuts or other con-

nectors. Reinstall the condensate drain 
access cover and keep the connec  on 
joints inside of the cover.

4

Connect the free ends of the 
2 wires to the shut o

  switch 

on the condensate pump in 

accordance with the condensate pump 
manufacturers recommenda  ons.

Condensate Pump Wiring Loop

22 AWG - White

(Loop Located Close to the Drain Connections)

White Wires

From Water Heater

 Wires to Condensate 

Pump Overflow 

Shut Off Switch

(22 AWG or Larger)

Figure 14 -

Wiring Loop for connec  on of 

Condensate Pump.

INSTALLATION

Summary of Contents for Voltex series

Page 1: ...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...

Page 2: ...Drain Pan Discharge Pipe Do Not Cap or Plug Temperature and Pressure Relief Valve Drain Cold Inlet Hot Outlet Shut off Valve Hot Air Filter User Interface Module UIM Upper Element and ECO Condensate D...

Page 3: ...ult in death or serious injury CAUTION CAUTION indicates a hazardous situa on that if not avoided could result in minor or moderate injury NOTICE NOTICE indicates prac ces not related to physical inju...

Page 4: ...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 point of use...

Page 5: ...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 prop erly according to the instructions o...

Page 6: ...thori es may have similar requirements or other codes applicable to the installa on of this water heater 3 Before you start be sure you have and know how to use the following tools and supplies Plumbi...

Page 7: ...d 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...

Page 8: ...s require and we recom mend installing the water heater in a drain pan that is piped to an ade quate drain The drain pan must be at least two inches wider than the diameter of the water heater Install...

Page 9: ...on of water the tank will eventually leak To minimize property damage from leaks inspect and maintain your water heater in accor dance with this manual s instruc ons Inspect the drain pan pipes and su...

Page 10: ...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 qualified person 7 Turn the...

Page 11: ...con densate 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 ele...

Page 12: ...mp in the event the con densate pump fails or the float switch in the pump ac vates see step 5 on page 11 1 Using 3 4 PVC piping a 90 elbow that is 3 4 slip 3 4 NPT and an approved sealant none suppli...

Page 13: ...here hot water will be used WARNING Even if the water heater s thermostat s are set to a rela vely low temperature hot water can scald Install Thermosta c Mixing Valves at each point of use to reduce...

Page 14: ...n tains an outlet connec on J tube that has an orienta on mark that must line up with arrow in a 12 o clock posi on 3 Connect the hot water supply using 3 4 inch NPT to the hot water outlet Follow the...

Page 15: ...Ensure that wire sizes type and connec ons comply with all applicable local codes In the absence of local codes follow NFPA 70 and the current edi on of the Na onal Electric Code NEC Figure 22 Connec...

Page 16: ...1 The water heater s tempera ture se ng has been factory set to approximately 120 F to reduce the risk of scald injury You may wish to set a higher temperature to provide hot water for automa c dishwa...

Page 17: ...r Temperature Regula on sec on If the instruc ons are not clear contact a qualified person NOTE For increased water demand switching temporarily to Hybrid Mode or Electric Mode will decrease the recov...

Page 18: ...nge 1 to 99 days The vacation timer will blink on the display press the Mode Enter button to confirm the vacation timer To deactivate Vacation Mode press the Mode Enter button to switch to the desired...

Page 19: ...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...

Page 20: ...lacing the Heating Element section on page 27 SF The air filter is dirty 1 Turn off power at the circuit breaker fuse box 2 Clean the air filter See Air Filter Maintenance section on page 30 ECF The h...

Page 21: ...sists proceed to the next step 3 Check control wire connections to condensate pump If error persists proceed to the next step 4 Replace accessory condensate pump If error persists contact a qualified...

Page 22: ...e see Adjusting the Temperature section on page 16 2 Clean air filter 3 Change to different mode or modify usage patterns For example if in Efficiency Mode switch to Hybrid Mode 4 Ensure the cold conn...

Page 23: ...xpansion tank 3 Non functioning Temperature Pressure Relief Valve 4 Debris under valve seat 1 Check water supply inlet pressure If higher than 80 PSIG install a pressure reducing valve 50 60 PSIG is t...

Page 24: ...Turn the circuit breaker back on or install the fuses and check the power on both incoming power wires using a non contact circuit tester Turn the power off and replace the cover on the electrical jun...

Page 25: ...e to the tank overhea ng WARNING Do not cap or plug the T P relief valve or discharge pipe and do not operate the water heater without a func oning T P Relief Valve this could cause an explosion Water...

Page 26: ...al water u lity If the low pres sure is only on the hot water side the primary causes of this are Melted heat traps or dip tube Solder ing copper pipes while they are con nected to the water heater ca...

Page 27: ...k the hot and cold connec ons and make sure your homes hot water pipe is connected to the hot wa ter outlet on the water heater Usually reversed connec ons are found soon a er the installa on of a new...

Page 28: ...ter remove and check the heating elements whenever you drain the tank If you have heavy lime depos its on heating elements you will need to replace them more often Sediment may form large masses that...

Page 29: ...out Once you are certain the tank is completely full of water close the hot water faucet 10 Restore power to the water heater It may take two hours for the tank to heat up Replacing the Hea ng Element...

Page 30: ...ep 10 in the Installa on sec on 10 Refill the tank by opening the cold water supply valve Make sure a hot water faucet is open and the drain valve is closed Allow the hot water to run full for at leas...

Page 31: ...ECO fits ghtly against the tank 9 A ach the wires following the wiring diagram on the water heater s label Make sure all wire connec ons are ght 10 Replace the plas c element ECO cover insula on and a...

Page 32: ...t the circuit breaker fuse box 1 Take the two tabs on the air filter and remove slide it from the top cover of the unit 2 If you are replacing the filter skip to step four To clean the filter use a va...

Page 33: ...Coil Discharge Temperature Sensor Assembly 13 Upper Lower Tank Temperature Sensor Assembly 14 Fan Shroud 15 Condensate Drain Access Cover 16 Electronic Expansion Valve Coil 17 Run Capacitor 18 Relay K...

Page 34: ...NOTES 34 Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide NOTES...

Page 35: ...NOTES Residen al Hybrid Electric Heat Pump Water Heater Use and Care Guide 35 NOTES...

Page 36: ...Teflon is a registered trademark of E I Du Pont De Nemours and Company 2015 A O Smith Corporation All Rights Reserved...

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