Lochinvar 000 - 500 User Manual

your gas supplier for local re quire ments governing
the tem 

per 

a 

ture setting.  Re 

mem 

ber, no water

heating sys tem will provide exact tem per a ture at
all times.  Allow a few days of operation at this
setting to de ter mine the correct temperature set ting
consistent with your needs.

Incorrect piping of the cold water supply to the sys tem
may result in excessive low temperature op 

er 

a 

tion

causing condensate formation on the heat ex 

chang 

er

and operational problems.  The cold water supply
piping must be installed in the dis charge piping from
the heater to the storage tank. This allows the cold water
to be tempered in the storage tank before entering the
heater.  See typ i cal installation drawings provided with
the unit for correct piping.  Higher wa ter temperatures
reduce condensate formation.

The manufacturer recommends the use of a prop er ly
sized thermostatic mixing valve to supply do mes tic hot
water at temperatures less than 140°F.   Storing the
water at a higher temperature and ther 

mo 

stat 

i 

cal 

ly

mixing the water will increase the avail able quantity of
mixed hot water, greatly reduce the possibility of
con den sate formation on the heat exchanger and help
pre vent the growth of water born bacteria.  Adequate
care MUST be taken to prevent potential scald injury
when storing water at 140°F and hotter.

Automatic vent dampers are not required or fur nished
on potable water heaters.  All  water heaters will have a
plug installed in the damper terminal on the side of the
control panel to allow operation with out a vent damper.
The damper plug MUST be in place if an optional vent
damper is not used on a water heater. Water heaters with
inputs of 360,000 Btu/hr and less may be ordered with
the vent damp er as an option. Remove the damper plug
from the terminal to connect an optional vent damper
wire harness.  The optional damp er must be properly
installed and the wire har ness plugged into the terminal
on the side of the con trol panel to allow the unit to
func tion.  See the “Au to mat ic Vent Damper” section in
the basic portion of the manual.  

This water heater/hot water supply boiler is nor mal ly
supplied with a temperature and pressure re lief valve(s)
sized in accordance with applicable codes. Units may
be supplied with an optional pres 

sure only relief

valve(s).  When a water heater/hot water supply boil er
equipped with this optional re lief valve is piped to a
separate storage vessel, the storage vessel must have a
properly installed tem per a ture and pressure relief valve
which complies with local codes.

• Water temperature over 125°F (52°C)
  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 heating
 appliance.
• Feel water before bathing or showering.
• If this appliance is used to produce
   water that could scald if too hot,
  such as domestic hot water use,
  adjust the outlet control (limit) or use
   temperature limiting valves to obtain
  a maximum water temperature of 
 125°F (52°C).

 WARNING

Do not install an optional vent damper within 6" 

(152mm) of combustible materials.

 CAUTION

Setting the temperature selector to high er settings
provides hotter water, which in creas es the risk of
scald injury.

 CAUTION

(1) This water heater, when set at the low 

er

temperature setting, is not capable of producing
hot water of sufficient temperature for sanitizing
pur 

pos 

es. (2) Higher stored water temperature

in creas es the ability of the water heater to supply
desired quantities of hot water, however
remember:

 CAUTION