4
2.2) Gas train
The gas train consists of a removable burner tray
assembly. Basically, the gas train incorporates a
combination gas control (valve and pressure regulator),
and a complete ignition system, including a pilot.
2.3) Draft hood
All models use an integral type draft-hood that must not
be altered in any way.
2.4) Type of ignition
The HGRC series is available with 3 types of ignition:
a. A pilot that is burning continuously;
b. An intermittent pilot that lights on demand only;
c. Hot surface ignition that utilises a glow rod to light
the gas upon demand.
2.5) Modulation
The HGRC series is equipped with an optional,
thermostatically modulating gas valve, that uses a
thermal sensor located in the water outlet to control the
gas input to the burners. A modulation of up to 50% of
input is possible.
2.6) Motorized vent damper
The HGRC series is equipped with an optional,
motorized vent damper on the vent pipe to minimize
heat loss during off-cycle periods in order to increase
the seasonal efficiency of the unit. When requested,
this package is completely installed and wired at the
factory.
We recommend that you have a qualified
technician install your appliance.
3) DELIVERY
Carefully check your unit upon delivery for any evidence
of damage that may have occurred during shipping and
handling. Make sure that the information on the boiler
rating plate matches that on the shipping papers. Any
claims for damages or lost parts must be made against
the carrier without delay.
4) INSTALLATION
Your unit must be installed according to regulations set
out by competent authorities. Consult the latest editions
of the CAN/CGA B149.1 or B149.2 Installation Codes
for current guidelines.
4.1) Location
The unit must be installed in a clean and dry area, as
closely as possible to the chimney or power vent.
CAUTION
Any excessive accumulation of dust around
the boiler must not be tolerated, especially
construction related dust such as dry plaster
dust and insulation fibres.
These dust particles tend to be sucked in by
the burners and to clog them, possibly leading
to severe soot formation.
Observance of this condition is essential for
the appliance warranty to remain valid.
WARNING
This unit must be installed on a non-
combustible floor. It must NOT be installed
directly on a carpeted or wooden floor.
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