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Physical Damage

: If the water heater has been subjected

to fire, flood, or physical damage, turn off the manual gas

shutoff valve and do not operate the water heater again
until it has been checked by qualified personnel.

Temperature Setting

:

 

Hotter water increases the risk of

scalding injury.

Venting System Inspection

: A  visual inspection should

be made on the venting system at least once a year.
-. Be sure the venting is properly connected to prevent

   escape of dangerous flue gases which could cause
   deadly asphyxiation.
-. Obstructions could cause improper venting. The

   combustion  and  ventilation  air  flow  must not be ob-
   structed.
-. Damage or deterioration which could cause improper

   venting or leakage of combustion byproducts.

Clean Up

: The flue outlet and the air intake holes on the

bottom sides of  the water  heater should be checked

frequently. Clean as needed to prevent the entry of water,
insects, rodents or other foreign materials such as fallen
leaves and dust that could cause blockages. Do not ob-

struct the flow of combustion air and exhaust air flow.

Water Strainer

:  The  water  strainer should  be  checked

at  least  once  a  year.  It  protects  valve  from  dirt,  and
pipe  scale.  Self-clean  by  opening  valve  or  plug  con-
nected  to  a  blow-off  outlet.

Sediment  Build-up

:

 

Unlike  a  typical storage  tank,  this

heater  has  a  self  cleaning  system  initiated  by  the  flow
of  water.  Build  up  of  sediment  in  faucet  aerators,

shower  heads  and  screens  could  impair  water  flow
and  cause the  water  heater  to  deliver less  than  its  full
output, or to shut down completely. Check any of these

screens  or  shower  heads  on  your  faucets  periodically
and  clean  as  necessary.

SYSTEMS AND PARTS CHECK

The unit should be checked once a year or as necessary by a

certified and trained technician. If repairs are  needed, the
repairs should be done by a certified and trained technician.
The following systems and parts should be checked at least

once a year.

1. Venting system
2. Burner

3. Manual operation of the pressure relief valve to ensure
    correct operation.
4. Periodic cleaning of the water filter.

5. Remove the thermistor from heat exchanger and check

    

for mineral coating. A mineral coating on the thermist

   -or requires flushing.

  WARNING

!

!

Turn off the electrical power supply, the manual

gas control valve, and the manual water control

valve before servicing.

 CAUTION

!

!

Avoid  contact  with  hot  water  released  from  the
relief  valve
NO LUBRICATION: 

No lubrication is required for the

water  heater.

Service & Cleaning Of The Burner

: Only specially trained

and authorized  personnel  are  permitted  to  service  the
burner.

  Maintenance  and  Service

10

BURNER IGNITION

: Water heater has automatic ignition

system. Once you open a hot water tap, the computer
electronically ignites the burners. You can see the burner
flame via flame inspection hole.

_

_

_

Flame Inspection
Hole

Summary of Contents for GU26DV

Page 1: ...ay WARNING California Proposition 65 lists chemical substances known to the state to cause cancer birth defects death serious illness or other reproductive harm This product may contain such substance...

Page 2: ...be filled with water Water must be running from the hot water faucet before turning the main gas valve to the water heater to ON WARNING CAUTION If you do not follow these instructions exactly a fire...

Page 3: ...al gas valve located on the outside of the unit to the off position Wait five 5 minutes to clear out any gas If you smell gas STOP Follow B in the safety information above If you don t smell gas go to...

Page 4: ...4 Parts Diagrams for Model GU32DV 505 11 12 1321...

Page 5: ...06 1 7 Panel Bottom 151010009 1 8 Control Panel Assembly 301080170 1 9 Temperature and Pressure Relief Valve 194010281 1 10 Intake Collar Assembly 307060517 1 11 Top Packing 151010200 1 12 Plug 601020...

Page 6: ...Parts Diagrams for Model GU26DV 505 11 12 1261 6...

Page 7: ...06 1 7 Panel Bottom 151010009 1 8 Control Panel Assembly 301080170 1 9 Temperature and Pressure Relief Valve 194010281 1 10 Intake Collar Assembly 307060517 1 11 Top Packing 151010200 1 12 Plug 601020...

Page 8: ...will turn off automatically WHATTO DO IF YOU SMELL GAS Do not try to light any appliance Do not touch any electrical switch Do not use any phone in your building Immediately call your gas supplier fro...

Page 9: ...re Press the HOT or COLD Temperature Setting Button with unit ON Temperature setting is only adjustable when the water heater is not in use The maximum water temperature setting can be limited by DIP...

Page 10: ...a self cleaning system initiated by the flow of water Build up of sediment in faucet aerators shower heads and screens could impair water flow and cause the water heater to deliver less than its full...

Page 11: ...n A secondary air hole thermistor short open A vent condition is not normal Temperature too high on a burner thermistor Mixing control valve is not connected Mixing control valve initialization failur...

Page 12: ...bove sea level contact the manufacturer for high 0 5 to 9 1 Gal min 100 102 104 106 108 110 112 114 116 122 131 140 149 158 167 F 15 steps 9 1 Gal min ITEM MODEL NAME TYPE IGNITION DIMENSIONS OPERATIO...

Page 13: ...bs 120 VAC 60 Hz Specifications GU26DV 505 11 12 1261 Indoor Sealed Direct Vented Direct Ignition 13 Natural Gas Max 180 000 btu hr Min 47 500 btu hr L P Gas Max 180 000 btu hr Min 47 500 btu hr 45 F...

Page 14: ...himney or gas vent The appliance should be located in an area where leakage of the tank or connections will not result in damage to the area adjacent to the appliance or to lower floors of the structu...

Page 15: ...Relief Valve x 1 Intake Top x 1 O Ring G95 x 1 Exhaust Collar x 1 Valve Adaptor x 1 Orifice for LPG x 1 LPG Label x 1 Top Packing x 1 Mesh Screen x 2 Self Tapping Screw T4x16 x 5 Philips Head Screw M...

Page 16: ...4 screws Install the T P Relief Valve on the side of unit Make sure the T P Relief is secured tight to prevent water leak For indoor installation please install the Top Packing before connecting PVC o...

Page 17: ...xhaust outlet and air inlet terminals shall terminate at least 18 inches above the roof surface 0 clearance for 4 PVC ABS OR CPVC Schedule 40 piping from combustible surfaces The venting system must b...

Page 18: ...cal or Horizontal run in Length 40 ft Power Direct Venting Rule 18 When determining the installation location for a power direct vent water heater snow accumulation and drifting should be considered i...

Page 19: ...haust gases The venting system must be installed in a manner which allows inspection during the installation of the venting pipes and joints as well as periodic inspec tion after installation as requi...

Page 20: ...ional Standard Institute and Ameri can Society for Testing and Materials ANSI ASTM stan dards in the United States CEMENTING PVC ABS or CPVC PIPE and FITTING All primers cleaners and cements must meet...

Page 21: ...om the center line of the terminal E 12 inch min clearance to unventilated soffit F Clearance to outside corner G 2 feet clearance to inside corner formed by two exterior walls H 4 feet clearance to e...

Page 22: ...o the left Complete the rest of the vent pipe installation to thewaterheater sventconnector fittingontheblower outlet If necessary support horizontal run as previously mentioned The vertical inlet and...

Page 23: ...3 7 9 3 4 7 3 2 3 3 0 8 2 7 6 2 5 3 2 1 3 1 1 4 2 2 0 6 1 4 9 7 1 2 1 3 1 0 4 0 9 1 4 8 3 5 7 7 2 7 2 5 6 7 8 6 3 1 5 6 7 5 1 1 4 4 0 1 1 2 3 3 0 8 2 3 0 0 1 8 5 9 1 5 6 0 1 4 1 8 1 2 7 6 1 1 8 2 1 0...

Page 24: ...Be careful not to reverse the hot water outlet and cold water supply line connections to the water heater This will cause your heater to operate dan gerously and void warranty Make sure the hot and c...

Page 25: ...ions in the State of California CAUTION California Law requires that residential water heaters must be braced anchored or strapped to resist falling or horizontal displacement due to earthquake motion...

Page 26: ...be electrically grounded Label all wires prior to disconnection when servic ing controls Wiring error can cause improper and dangerous operation Verify proper operation after servicing CAUTION The wa...

Page 27: ...28 PV switch 5 OFF switch 4 Test selection switch 2 switch 3 Temperature selection 1 switch 2 Temperature selection 2 switch 1 Temperature selection 3 O N 8 7 6 5 4 3 2 1 switch 8 Reserved switch 7 Re...

Page 28: ...m axim umtem perature by selection switch O N 3 2 1 104 O N 3 2 1 110 O N 3 2 1 114 O N 3 2 1 122 O N 3 2 1 131 O N 3 2 1 140 O N 3 2 1 149 O N 3 2 1 167 Limitation of maximum temperature by selection...

Page 29: ...2 screws securing the Control Panel Assem bly to the frame and remove the Assembly from Water Heater Loosen 2 screw and the nut of the gas pipe and insert with Orifice LP Tighten the loose nut to mak...

Page 30: ...Valve Adaptor LP Reverse the steps above by reassembling the packing Gas Flange and Connector Bracket Make sure all screws and secure and tightened Change Dip Switch No 8 position from left to right 8...

Page 31: ...31 Recirculation System With A Grand Hall Water Heater Do not run circulation pump over two hours when install with timer Pump on time is should be less than two hours CAUTION...

Page 32: ...You are responsible for shipping charges of such replacement parts This Warranty does not cover any failures or operating difficulties due to accident abuse misuse alteration misapplica tion vandalis...

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