Lochinvar Hot Water Generator 5Troubleshooting, Symptom, Probable Cause, Corrective Action

Hot Water Generator Installation and Operation Manual

5Troubleshooting

SYMPTOM

PROBABLE CAUSE

CORRECTIVE ACTION

Pressure

relief

valve

• The primary / inlet temperature control

• Verify

control

valve

bulb

was installed in

“pops”.

valve is not closing properly.

tank bulbwell.

• The secondary / outlet energy source

• Verify

control

valve

actuator

is

pressure

control system

is

not

operating properly.

operating properly.

• The

over-temperature

limit system

is

• Check the individual components of the

out of adjustment, or some component

system and repair or replace the failed

of the system has failed.

component(s) as necessary.

Water shuts down at or

• The

over-temperature

limit system

is

• Check the individual components of the

too close to (above or

out of adjustment, or some component

system and repair or replace the failed

below) the design outlet

of the system has failed.

component(s) as necessary.

temperature.

A loud banging in the

• The condensate / water return piping

• Reconfigure

the

condensate

/

water

water

heater,

primary

has

not

been

installed

properly,

return

piping

and check valve to allow

piping,

or

condensate /

allowing the condensate / water to

for proper

drainage.

Check

to

assure

water return piping (not

drain

freely

(by

gravity);

the

that there is no restriction in the

to be

confused

with a

condensate

/

water

drain

line

is

condensate

/

water

drain line.

Replace

normal

clicking noise

restricted;

or

the

condensate

/ water

the check

valve

if

it

is

leaking

or

has

check valve is leaking or has failed.

failed.

Also,

check

to

assure

that

there

made during operation).

is no restriction in the condensate /

water drain line.

• Primary /

inlet

steam line

is

not

• The steam supply should be clean dry

properly trapped (steam as energy

steam. Do

not

slug

controls

system

source only).

with

boiler

startup

condensate.

This

can damage controls as well as tube

bundle.

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