Instruction manual

43
B OPERATING AND MAINTENANCE INSTRUCTIONS for BMS
Qualified personnel must carry out installation, calibration or alterations to the gas
apparatus, or to convert it from one gas type to another. Conversion kits are available,
(optional).
9.1 Start-Up Instructions
Check that the system has been filled and purged.
The indicator on the pressure gauge 8, (fig.33),
should show 15-25 psi. To properly purge the
heater and system of air it is imperative that these
basic instructions be followed.
The automatic feed should have a fast fill feature.
There must be an isolation valve installed so that
when it is closed it will direct the incoming water
flow through the system and heater in the normal
flow pattern and out a drain cock installed at the
end of the loop.
a) Attach a hose to the heating drain cock and run
the hose to a suitable drain.
b) Open heating drain cock.
c) Open the automatic feed using the fast fill feature
and allow the system to fill purge. On multi-zone
systems, each zone must be purged separately
with the other zones shut off.
9.2 Checks Prior to Ignition
Prior to ignition, it is necessary to carry out a few
checks.
a) Check that the appliance is electrically connected
to a voltage of 115V 60Hz.
Grounding is compulsory likewise the installation
of a switch with fuse immediately upstream from
9 - BMS model - INSTRUCTIONS FOR USE
Figure 33 - Instrument panel for model BMS
1 Power switch
2 Central heating regulation knob
3 Circulator pump switch
4 High limit thermostat reset button
5 Heater temperature control knob
6 Gas valve service switch
7 Failure lamp indicator
8 Temperature-pressure gauge
the heater.
b) Check that the heater is connected properly to
the flue, it must not be clogged. The height and
cross section must both be adequate.
9.3 Ignition Procedure
a) Open the gas cock.
b) Turn the power switch on, (fig.33, item 1).
c) Position the heater temperature control knob 5
(fig.33) on 120°F. The ignition module will provoke
sparks for burner ignition for about 11 seconds.
If, during this length of time it does not start up
because there is still air in the gas line, the heater
will shutdown and the indicator light of the failure
lamp indicator 7 (fig.33) signaling the state, will
come on.
Turn the heater temperature control knob 5
(fig.33) to position 0 and repeat operation c). The
ignition module will attempt a new ignition
automatically. Should overheating occur or the gas
supply fail to shut off, turn off the manual gas control
valve to the appliance.
It is important, especially in the heating season, to
keep the heater temperature control knob 5
(fig.33) on 150°F seeing as the circulator pump
starts working at 140°F. During the summer
season, if the water is hot enough, this knob can
be adjusted to a lower temperature.