High   A Ltitude   A Djustment - Rheem AP15317 Use And Care Manual

Direct vent gas tankless water heater
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The  content  on  this  page  is  intended  for  use  by  qualified    
WARNING:  Improper  adjustment,  altera-­
tion,  service  or  maintenance  can  cause  prop-­
erty  damage,  personal  injury,  or  death.
Minimum  Temperature   A djustment  by  the  
Main  Remote  Control  (UMC-­117,  USC1-­117  
and  USC2-­117)
Required  adjustment  for  85°F  (29°C)  water  
temperature  setting.
Follow  the  instruction  below  if  it  is  determined  that  a  
setting  of  85°F  (29°C)  is  required.
Turn  on  the  remote  control.  Turn  off  the  gas  and  
G
water  shutoff  valves.
Press  the  Down  arrow  temperature  adjustment  but-­
G
ton  on  the  remote  control  for  several  times  and  set  
the  temperature  at  100°F  (38°C).
  Press  the  Down  button  on  remote  control  3  times  
G
within  5  seconds.  The  display  of  the  remote  con-­
trol  will  show  "85".    
Turn  on  the  gas  and  water  shut  off  valves.
G
  Check  and  ensure  safe  operation  and  performance  
G
of  the  water  heater.
NOTICE:  
1.3  gpm  (5.0  l/m).
DIP
Switches
PCB
Location  of  DIP  Switches  on  PC  Board.
AP15317 (10_09) DV Gas Manual 10 30 09.indd 35
installation/service  personnel  ONLY.
High   A ltitude  DIP  Switch   A djustment
For  High   A ltitude  Installation  above  3,280  
Feet  (1,000m):
When  the  water  heater  is  installed  above  3,280  feet  
(1,000m),  the  adjustment  of  DIP  switch  is  required  for  
high  altitude  installation.
Without  adjusting  the  DIP  switch,  the  water  heater  
may  not  function  properly.
NOTICE:  If  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:
G
G
G
G
G
G
G
NOTICE:    Manifold  pressure  will  be  reduced  by  
this  adjustement.
ON
1
2
3
4
G
1
2
3
4
G
G
  Check  the  altitude  (above  sea  level)  where  the  
water  heater  is  installed.
  If  the  altitude  is  more  than  3,280  feet  (1,000m),  
the  adjustment  of  DIP  switch  is  required.
  Turn  off  the  gas  shut  off  valve  and  water  shutoff  
valve.
Remove  the  front  cover.
  Find  the  two  DIP  switches  located  at  the  top  right  
hand  side  of  the  PCB.    The  switch  labeled  "DIP  2"  
is  the  bottom  switch.
  Change  the  DIP  switch  #3  setting  of  DIP  2  to  
"ON"  position  if  the  water  heater  is  installed  
above  3,280  feet  (1,000m)  below  6,560  feet  
(2,000m).  See  the  diagram  below.  DO  NOT  alter  
any  other  DIP  Switch.    
  Change  the  DIP  switch  #4  setting  of  DIP  2  to  
"ON"  position  if  the  water  heater  is  installed  
above  6,560  feet  (2,000m)  below  9,840  feet  
(3,000m).  See  the  diagram  below.  DO  NOT  alter  
any  other  DIP  Switch.
Attach  the  unit's  front  cover.
  Turn  on  the  gas  shutoff  valve  and  water  shutoff  
valve.
  Check  and  ensure  safe  operation  and  performance  
of  the  water  heater.
ON
ON
1
2
3
4
2
3
1
As set from factory
Dip switch adjustment
3,280 feet (1,000m)
thru
6,560 feet (2,000m)
ON
4
3
4
1
2
Dip switch adjustment
6,560 feet (2,000m)
thru
9,840 feet (3,000m)
35
11/9/2009 3:10:39 PM

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