Ruud AP15318 Use & Care Manual Download Page 4

Time/Temperature  Relationship  in  Scalds

      Water  Temperature  

Time  To  Produce  a  Serious  Burn

  

120°F  (49°C)  

More  than  5  minutes

  

125°F  (52°C)  

1

1

/

2

  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  1

1

/

2

  seconds

  

155°F  (68°C)  

About  1  second

Table  courtesy  of  Shriners  Burn  Institute

The  chart  shown  above  may  be  used  as  a  guide  in  
determining  the  proper  water  temperature  for  your  home.

DANGER:  Households  with  small  children,  disabled  

or  elderly  persons  may  require  a  120°F  (49°C)  or  lower  

temperature  setting  to  prevent  contact  with  “HOT”  water.

Maximum  water  temperature  occurs  while  burner  is  on.  
To  find  water  temperature  being  delivered,  turn  on  a  hot  
water  faucet  and  place  a  thermometer  in  the  water  stream  
and  read  the  thermometer.  (See  page  22  &  23  for  more  
details.)

The  temperature  of  the  water  at  the  outlet  of  the  water  
heater  can  be    regulated  by  setting  the  temperature  on  
Remote  Control.  The  remote  control  was  set  at  100°F  
(38°C)  before  it  was  shipped  from  the  factory.

The  diagram  to  the  bottom  left  illustrates  the  Remote  
Control  and  how  to  adjust  the  water  temperature.

Notice:

  The  factory  setting  allows  operating  temperatures  

between  100°F  (38°C)  and  120°F  (49°C).  Temperatures  
of  85°F  (29°C)  and  up  to  140°F(60°C)  can  be  achieved  
with  the  MAIN  (UMC-­117)  remote  control.  Temperatures  
of  85°F  (29°C)  can  be  achieved  with  the  Bath  (USC-­117  
or  USC2-­117)  remote  control.    Only  qualified  service  
personnel  should  perform  this  adjustment.    Only  factory  
authorized  remote  control(s)  should  be  used.

Notice:

  When  this  water  heater  is  supplying  general  

purpose  hot  water  requirements  for  use  by  individuals,    
a  thermostatically  controlled  mixing  valve  for  reducing  
point  of  use  water  temperature  is  recommended  to  reduce  
the  risk  of  scald  injury.  Contact  a  licensed  plumber  or  the  
local  plumbing  authority  for  further  information.

D A N G E R

!

HOT

Water temperature over 125

°

F can

cause severe burns instantly or

death from scalds.

Children, disabled and elderly are

at highest risk of being scalded.

See instruction manual before

setting temperature at water

heater.
Feel water before bathing or

showering.
Temperature limiting valves are

available, see manual.

BURN

!

DANGER!

WATER  TEMPERATURE  SETTING

Safety  and  energy  conservation  are  factors  to  be  considered  when  selecting  the  water  
temperature  setting  of  a  water  heater’s  remote  control.  Water  temperatures  above  
125°F  (52°C)  can  cause  severe  burns  or  death  from  scalding.  Be  sure  to  read  and  follow  
the  warnings  outlined  on  the  label  pictured  below.

IMPORTANT  SAFETY  INFORMATION

READ  ALL  INSTRUCTIONS  BEFORE  USING.

!

°F

PRIORITY

POWER 

ON/OFF

Higher  (Hotter)  

Lower  (Cooler)  

    100  102  104  106  108  110  112  114  116  118  120

      38      39      40      41      42      43      44      46      47      48      49

85

29

125*  130*  140*      

°F

52*      54*      60*      

°C

*    

Temperatures  85°F(29°C)  and  up  to  140°F(60°C)  can  be  
achieved  with  the  Main  (UMC-­117)  remote  control.  See  
page  30  &  31  for  minimum  and  maximum  temperature  
adjustment.

Notice:

Display  
shows  
°F  only.

4

AP15318 tankless 10 30 09.indd   4

11/9/2009   3:17:33 PM

Summary of Contents for AP15318

Page 1: ...ce and troubleshooting of the water heater This manual also includes a parts list It is very important that all persons who are expected to install operate or adjust this water heater read the instruc...

Page 2: ...swers to common problems in the Troubleshooting Guide If you review the chart of Troubleshooting Tips first you may not need to call for service READ THIS MANUAL Your safety and the safety of others a...

Page 3: ...solvents paint thinners etc and the vapors they produce are extremely dangerous DO NOT handle use or store gasoline or other flammable or combustible materials anywhere near or in the vicinity of a wa...

Page 4: ...117 or USC2 117 remote control Only qualified service personnel should perform this adjustment Only factory authorized remote control s should be used Notice When this water heater is supplying genera...

Page 5: ...th great caution It is heavier than air and will collect first in lower areas making it hard to detect at nose level Before attempting to light the water heater make sure to look and smell for gas lea...

Page 6: ...pacity greater than 52 gallons or tankless style consult the local building jurisdiction code for acceptable bracing procedures Have the installer show you the location of the gas shut off valve and h...

Page 7: ...burns death or property damage The water heater must be located so it is not subject to physical damage for example by moving vehicles area flooding etc The water heater should be installed verticall...

Page 8: ...tion of Important Safety Information California Proposition 65 Warning This product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Use Car...

Page 9: ...anticipated snow level B Clearance to window or door that may be opened 6 inches 15 cm for appliances 10 000 Btuh 3 kW 12 inches 30 cm for appliances 10 000 Btuh 3kW and 100 000 Btuh 30kW 36 inches 9...

Page 10: ...le and pets Install outdoor water heater such that air inlet and flue outlet is above anticipated snow level 1 8 m If soffit vent is too close block off and install new vent at another location Inside...

Page 11: ...pressure of 40 psi 276 kPa is required to achieve maximum flow rate To maintain proper performance ensure sufficient water supply pressure The Required Water Pressure Min Operating Water Pressure 14...

Page 12: ...heater and the water shutoff valve see the top left diagram The following should be addressed in regards to the HOT WATER OUTLET Connections between the water heater and point s of use should be as s...

Page 13: ...line The end of the discharge line should not be threaded or concealed and should be protected from freezing No valve of any type restriction or reducer coupling should be installed in the discharge...

Page 14: ...ode In Canada the latest edition of CSA B149 1 Natural Gas and Propane installation code Manual Gas Supply Line Shutoff Manual Gas Appliance Shutoff Union Sediment Trap Cap Valve Supplied Leak Testing...

Page 15: ...comply with local codes or in the absence of local codes with the latest edition of the National Electrical Code ANSI NFPA 70 or in Canada Canadian Electrical Code CSA C22 1 Part 1 F PRIORITY POWER O...

Page 16: ...projections in the base plate fit into the housings in the remote control Fix the control to the base plate at the bottom of the remote control using the screw provided Proceed to Connecting the remo...

Page 17: ...IRECTSEULEMENT SW3 SW2 SW1 U 2 1 S 1 3 2 W W 12 3 4 I J H F W W 2 3 4 1 B R Y O W BR BK 1 2 3 4 5 6 7 8 R Y O W BR BK 1 2 3 4 5 6 7 8 C 9 R BR BK BK W BK W 1 2 3 4 Y W BK 1 2 3 K SV0 SV1 SV2 SV3 W BK...

Page 18: ...tdoor Models Discharge Line To Suitable Drain To Hot Water Faucet s Relief Valve Union Drain Valve 6 15 cm Air Gap Manual Gas Appliance Shut off supplied Flue Terminal Trap Manual Gas Supply Line Shut...

Page 19: ...storage tank heaters This water heater does not store water making an insulation blanket unnecessary The manufacturer s warranty does not cover any damage or defect caused by installation attachment o...

Page 20: ...tight and free of leaks Water filter is clean and in place Materials used are as instructed in this manual Water pipes are insulated and protected from freezing C Gas Supply Gas type matches rating p...

Page 21: ...tric power to the appliance 3 Do not attempt to light the burner by hand 4 Turn the Gas Shutoff Valve located on the outside of the unit clockwise to the OFF position 5 Wait five 5 minutes to clear ou...

Page 22: ...ere is any difficulty in understanding or following the Operating Instructions or the Care and Cleaning section it is recommended that a qualified person or serviceman perform the work Operating the w...

Page 23: ...t water faucet is in the open position Notice The factory setting allows operating temperatures between 100 F 38 C and 120 F 49 C Temperatures of 85 F 29 C and up to140 F 60 C can be achieved with the...

Page 24: ...odically this may be due to a problem in the water system Contact the water supplier or your plumbing contractor on how to correct this DO NOT plug the relief valve outlet Rapid closing of faucets or...

Page 25: ...a brush Use only mild soapy water other cleaners may damage the surface of the water heater DO NOT remove any label including the rating plate while cleaning or servicing DO NOT splash water on the r...

Page 26: ...ng conditions even for a short period of time be sure to drain all water from the unit as instructed above Exposure to freezing conditions can occur from down draft of venting system or from installat...

Page 27: ...icable Check and replace if necessary Error code displayed on remote control See instructions for Error Code and if required contact a dealer for service Not enough water demand Increase water flow Wa...

Page 28: ...grounded Low inlet gas pressure due to improper sizing Wrong gas type Open the Gas shutoff valve fully Contact gas utility company Fill up LP Gas container or replace with a new cylinder of LP Gas Bl...

Page 29: ...f parts desired CAUTION For your safety DO NOT attempt repair of electrical wiring gas piping burners vent connectors or other safety devices Refer repairs to qualified service personnel WARNING For y...

Page 30: ...f the remote control will begin to blink While the number is blinking push the UP arrow temperature adjustment button and the Down arrow temperature adjustment button at the same time The display of t...

Page 31: ...f the water heater is installed less than 3 280 feet 1 000m no action is required How to adjust the DIP switch on the PCB for high altitude installation Check the altitude above sea level where the wa...

Page 32: ...onal Service Department at the following address 1241 Carwood Court Montgomery AL 36117 Phone 1 800 432 8373 When contacting the manufacturer the following information will be requested a Model and se...

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