Water  Connections - Rheem AP15317 Use And Care Manual

Direct vent gas tankless water heater
Table of Contents

Advertisement

CAUTION:  
Reinforcement  of  the  wall  is  
required  in  case  the  wall  is  
not  strong  enough  to  hold  
the  appliance.
1/8" (.32 cm)
Clearance
Wood
Upper Bracket
Screw
Washer
Wood
Screw
Washer
Wood
Screw
Lower Bracket
The  image  above  may  differ  
in  appearance  from  your  
water  heater.
IMPORTANT:  Do  not  
apply  heat  to  the  HOT  or  
COLD  water  connections.  If  
sweat  connections  are  used,  
sweat  tubing  to  adapter  
before  fitting  adapter  to  
the    water  connections  on  
heater.   A ny  heat  applied  
to  the  water  supply  fittings  
will  permanently  damage  
the  internal  components    
of  the  water  heater.
Notice:    Due  to  cold  
enviroments,  ice  may  
potentially  accumulate  at  
the  water  connections.    In  
this  case,  please  insert  the  
power  cord  of  the  water  
heater  into  an  electrical  
outlet.    The  ice  should  melt  
withing  approximately  10  
minutes  and  at  this  time  the  
water  connections  can  be  
made.
AP15317 (10_09) DV Gas Manual 10 30 09.indd 15
Mounting  the  Water  Heater
Make  sure  the  location  of  the  appliance  allows  
for  easy  access  and  operation.
Wall  studs  should  be  utilized  when  mounting  
the  water  heater  to  the  wall.   A lternately,  a  
suitable  piece  of  wood  may  be  placed  inside  
or  outside  of  the  wall  to  span  the  distance  
between  the  wall  studs.  Fasten  the  water  
heater  mounting  brackets  to  the  wood.
In  case  of  dry  wall  or  concrete  wall,  use    
drywall  anchors  or  lag  bolts.
The  water  heater  requires  120VAC/60Hz.  
Have  a  receptacle  with  ground  terminal  near  
the  water  heater.  The  length  of  the  power  
supply  cord  is  6  feet  (1.8  m).
Install  a  wood  screw  for  the  upper  bracket  
with  a  clearance  of  1/8"  (.32  cm)  between  the  
wall  and  the  screw  head.  Hang  the  center  of  
the  upper  bracket  on  the  screw.
Using  a  wood  screw  and  a  washer,  affix  the  
Thermal  Expansion
A  thermal  expansion  tank  will  be  required  if  
the  water  heater  is  installed  in  a  closed  loop  
system  to  prevent  damage  to  heater,  related  
piping  and  relief  valve.  Replacing  the  relief  
valve  will  not  correct  the  problem!  The  
expansion  tank  is  designed  with  an  air  cushion  
built  in  that  compresses  as  the  system  pressure  
increases,  thereby  relieving  the  over  pressure  
Water  Supply  Connections
Plumbing  should  be  carried  out  by  a  qualified  
plumber  in  accordance  with  local  codes.
Use  approved  plumbing  materials  only.
To  allow  the  full  flow  capacity,  it  is  
recommended  to  keep  water  inlet  and  outlet  
pipes  to  no  less  than  3/4"  diameter.
To  conserve  energy  and  to  prevent  freezing,  
insulate  both  cold  and  hot  water  supply    
lines.  DO  NOT  cover  the  drain  or  pressure  
relief  valve.
To  ensure  proper  operation  of  the  water  heater,  
the  following  water  pressure  guidelines  should  
be  followed:
G     Operation  of  the  water  heater  requires  the  
minimum  water  pressure  of  14  psi  (97  kPa)  
and  a  minimum  water  flow  rate  of  0.66  gpm  
(2.5  lpm).
G     A  water  pressure  of  40  psi  (276  kPa)  is  
required  to  achieve  maximum  flow  rate.
G     To  maintain  proper  performance,  ensure  
sufficient  water  supply  pressure.  The  
lower  bracket  to  the  wall  (Left  and  Right).  
Repeat  to  affix  the  top  bracket.
The  brackets  can  be  adjusted  to  change  the  
distance  between  the  back  of  the  appliance  
and  the  wall  within  the  range  of  3/8"  (.95  cm)  
to  1-­1/2"  (3.8  cm).
Loosen  the  adjustment  screws  of  both  the  top  
and  the  bottom  brackets  to  adjust  the  distance  
(See  diagram  below).
TOP
Adjustment Screws
Bracket
Adjustment Screws
Bracket
The  image  above  may  differ  in  appearance  
from  your  water  heater.
condition  and  eliminating  the  repeated  
operation  of  the  relief  valve.  Other  methods  
of  controlling  thermal  expansion  are  also  
available.  Contact  your  installing  contractor,  
water  supplier  or  plumbing  inspector  for  
additional  information  regarding  this  subject.
Required  Water  Pressure  =  Min.  Operating  
Water  Pressure  (14  psi  [97  kPa])  +  Pipe  
Pressure  Loss  +  Faucet  and  Shower  
Pressure  Loss  +  Safety  Margin  (more  than  5  
psi  [34  kPa]).
G     To  supply  hot  water  to  upper  floors,  
additional  water  pressure  (0.44  psi/ft    
[10  kPa/m])  must  be  ensured.  The  
measurement  should  be  calculated  by  the  
distance  between  the  water  inlet  of  the  
water  heater  (ground  level)  to  the  hot    
water  faucet  (upper  floor  level).
G     Well  water  systems  should  be  set  to  ensure  
a  minimum  system  pressure  of  40  psi  (276  
kPa).  The  pressure  should  remain  stable  
during  the  operation  of  the  water  heater.
G     When  the  water  is  supplied  from  a  water  
supply  tank,  the  height  of  the  tank  and  the  
diameter  of  the  pipes  and  their  relation  
to  water  pressure  should  be  taken  into  
consideration.  Gravity  water  pressure  is  
not  recommended.
BOTTOM
15
11/9/2009 3:10:26 PM

Hide quick links:

Advertisement

Table of Contents
loading

Table of Contents