VOLTMAX ELECTRIC BOILER Installation and Operation Manual
(
Revised March 2019)
, Page
54.
operation temperature selected. Proceed to
the adjustment of the mechanical high limit
control localized on the right in the low
voltage electric compartiment. It shall be
adjusted 10 to 15F higher than the controller
high limit.
STARTUP PROCEDURE
Before starting the boiler, make sure that the
heating distribution design is made so that the
heating elements will come on only when water is
circulating in the boiler.
1) Apply a heat demand. If the boiler target
temperature is higher than the boiler water
temperature, the heating elements shall
come on in sequence more or less rapidly
depending on the differential between the
values. If the value indicated is “---“ it is
because the authorization or start up signal is
not established.
2) When the boiler capacity has reached 100%
as displayed on the controller, measure the
amperage and voltage values drawn by the
unit. These values shall be close to those
shown on the boiler name plate.
3) Slow down the heat demand from the heating
system. The boiler temperature shall
gradually increase and the boiler capacity
shall drop gradually and stabilize when the
boiler temperature will reach a temperature
near the target temperature.
4) When the heating request is completed, the
circulating pump can continue to operate
(depending on the operating mode or the
purge time) or switch off. The heating
elements stop working.
5) Check the operation of the adjustable high-
limit mechanical control
6) Check the operation of the Low Water Cut
OFF by pressing its test button during 5 sec.
The button is located on the left side of the
control panel
