VOLTMAX ELECTRIC BOILER Installation and Operation Manual
(
Revised March 2019)
, Page
58.
FUSES
Delay fuses with the same capacity and voltage
must be used when remplacing all of the boiler
fuses except for the power fuses that
are “fast
acting
” type T.
CONTACTOR
If one or more contactor must be replaced, make
sure that the terminal screws are well tightened
to avoid an overcharge. The required torque is
indicated on the contactor label. A verification of
the screw torque should be made annually
particuliary on the first years of service.
HEATING ELEMENTS
If a heating element must be replaced, make sure
that the replacement has identical power and
voltage as the old one. The model number and
technical caracteristics are indicated on the side
of the mounting flange of the element.
The sealing gasket must also be replaced by an
identical model as the one procured by Thermo
2000.
The torque for the bolts retaining the flange
should be 6lb.ft.
If the elements have been in contact with water or
a very humid environnement, dry then completely
before putting then under voltage. Verify the state
of the electrical isolation of the element and the
ground with a “Megger” test.
If elements are blown at their extrimites, make
sure there is no sediment deposits in the tank
befor installing new elements. If deposites are
present. A Sieve or other accessorie preventing
sediment deposits shall be installed.
TEMPERATURE SENSOR
Water outlet sensor:
The sensor is located in an immersion well
located in the heating elements compartiment on
the top of the boiler (illustration 5.1) and the
resistance vs temperature value is indicated in
table 12 above.
Water intake sensor
(on SCR models only):
The sensor is located in an immersion well in the
back and at the bottom of the boiler. To acces it,
remove the plastic plug located right above the
drain valve.
EXTERNAL HIGH LIMIT CONTROL
Fix high limit control with manual arming
It is located in the heating elements compartiment
and fixed in place by a metal plate fixed to one of
the element
’s flange.
During the installation one must make sure that
the surface of contact is clean and that the control
is firmly locked in place.
Adjustable high limit automatic control
It is located on the right in the control
compartiment of the boiler.
It must always be adjusted at 10°F above the high
limit temperature indicated in the operation
parameter of the controller.
INTERNAL CLOCK
If the internal clock is used and it does not keep
its reading (goes back de 0:00), the battery on the
electronic controller needs to be changed.
Contact thermo 2000 technical support for the
battery replacement procedure.
