Startup And Seasonal Maintenance - ECR International AT Serie Manuel D'installation, D'utilisation Et D'entretien

Use qualified service agency for annual inspection of
boiler and heating system.
NOTICE
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation. Verify proper operation after
service.
Placing Hydronic Block Into Service
1.
Verify hydronic block circuit breaker or switch
at service entrance and hydronic block circuit
breakers within unit are in "Off" position.
NOTICE
Only propylene glycol can be used in heating system
to prevent freezing. Recommendation is maximum
40% or less propylene glycol mixture to ensure
proper operation of electric boiler.
2.
Fill heating system with water until pressure is
10-15 PSIG. Check for leaks, repair if necessary,
purge all air from system.
NOTICE
Failure to vent and keep air out of heating system
will result in damage to heating elements in hydronic
block. Damage due to element dry fire is not covered
by manufacturer's warranty.
3.
Set boiler operating temperature to desired
heating water temperature. See Sequence of
Operation.
Boiler is equipped with a secondary high-limit
temperature device set at 200°F as safety limit
control. High limit temperature device has
automatic reset function and will reset at 170°F.
4.
Turn on hydronic block circuit breaker at service
entrance and/or disconnect switch and all circuit
breakers on hydronic block.
5.
Set room, thermostat above room temperature.
Circulator pump will now operate.
6.
Check system again for leaks. Allow circulator
pump to run until all air has been vented from
system. Gurgling or rushing sound indicates
presence of air. Do not allow electric elements
to fire until all air is purged from system. Reset
room thermostat if needed. Re-purge boiler if
necessary.

STARTUP AND SEASONAL MAINTENANCE

7. Hydronic block will start to produce heat.
Listen for air passing through system as water
temperature increases. Water pressure will rise
somewhat as temperature increases - this is
normal as long as the pressure remains less than
25 psig.
8.
When thermostat calls for heat, circulator will be
energized and green pump LED will light. Heating
elements are energized with green heating
element LEDs. Once boiler water temperature
reaches set point temperature controller will
regulate water temperature by staging its
elements. Number of elements which stay on is
based on heating demand and set point of boiler
water temperature. After all room thermostats
are satisfied, controller de-energizes elements
one after another, and switches pump off after 3
minutes.
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PN 240013676 REV. A [07/01/2022]