Reliance Water Heaters N85390NE ユーザーズマニュアル

28

If the Temperature-Pressure relief Valve on the water heater 

weeps or discharges periodically, this may be due to thermal 

expansion.
NoTe: excessive water pressure is the most common cause of 

Temperature-Pressure relief Valve leakage. excessive water 

system pressure is most often caused by "thermal expansion" 

in a "closed system." See Closed Water Systems and Thermal 

expansion on page 12. The Temperature-Pressure relief Valve 

is not intended for the constant relief of thermal expansion.
Temperature-Pressure relief Valve leakage due to pressure 

build up in a closed system that does not have a thermal 

expansion tank installed is not covered under the limited 

warranty. Thermal expansion tanks must be installed on all 

closed water systems.
Do NoT PLug THe TemPerATure-PreSSure reLIef 

VALVe oPeNINg. THIS CAN CAuSe ProPerTY DAmAge, 

SerIouS INJurY or DeATH.

Temperature-Pressure Relief Valve

must comply with ANSI Z21.22-

CSA 4.4 and ASME code.

Properly sized temperature-

pressure relief valve must be

installed in opening provided.

Can result in overheating and

excessive tank pressure.

Can cause serious injury or death.

on occasion, hot water may develop a strong odor. If this occurs 

drain  the  heater  completely,  flush  thoroughly,  and  refill.  If  the 

problem  persists,  chlorination  of  the  heater  and  replacement 

of  magnesium  anodes  with  aluminum  anodes  may  correct  the 

condition.

occasionally water softener companies recommend removal of 

heater anodes for odor reasons.

unauthorized removal of the anode(s) will void the warranty.  for 

further information contact your dealer.

examine the venting system every six months for obstructions 

and/or deterioration of the vent piping.
remove all soot or other obstructions from chimney which will 

retard free draft.

The  water  temperature  in  the  remote  storage  tank  (if  used)  is 

controlled by the storage tank temperature control.  The sensing 

element  is  mounted  in  the  hot  water  storage  tank,  see  Water 

Piping Diagram section.
A change in water temperature in the storage tank lower than 

the  tank  temperature  control  setting  will  cause  the  sensor  to 

activate  the  circulating  pump.  The  pump  then  circulates  the 

water through the heater where the thermostat senses the drop 

in water temperature and activates main burner operation of the 

appliance.
If the storage tank temperature control is out of calibration, replace 

with new control.
SHouLD oVerHeATINg oCCur or THe gAS SuPPLY fAIL 

To SHuT off, TurN off THe mANuAL gAS CoNTroL VALVe 

To THe APPLIANCe. 

Burn hazard.

Hot water discharge.

Keep clear of Temperature-

Pressure Relief Valve

discharge outlet.

It is recommended that the Temperature-Pressure relief Valve 

should be checked to ensure that it is in operating condition every 

6 months.
When checking the Temperature-Pressure relief Valve operation, 

make sure that (1) no one is in front of or around the outlet of the 

Temperature-Pressure relief Valve discharge line, and (2) that 

the water discharge will not cause any property damage, as the 

water may be extremely hot. use care when operating valve as 

the valve may be hot.
To  check  the  relief  valve,  lift  the  lever  at  the  end  of  the  valve 

several times, see figure 26. The valve should seat properly and 

operate freely.
If after manually operating the valve, it fails to completely reset and 

continues to release water, immediately close the cold water inlet 

to the water heater and drain the water heater, see Draining And 

flushing on page 28. replace the Temperature-Pressure relief 
Valve  with  a  properly  rated/sized  new  one,  see Temperature-

Pressure  relief  Valve  on  pages  12-13  for  instructions  on 

replacement.