Checking Equipment; What The Lights Mean On Your Camus Appliance; How It Operates (Sequence Of Operation) - Camus Hydronics DynaFlame DFW501 Installation, Operation And Service Manual

1.3

CHECKING EQUIPMENT

Check for signs of shipping damage upon receiving
equipment. Pay particular attention to parts accompanying
the boiler, which may show signs of being hit or otherwise
being mishandled. Verify total number of pieces shown on
packing slip with those actually received. In case there is
damage or a shortage, immediately notify carrier.
Figure 3: Checking the DynaFlame
Do not attempt to pry any panel off. To begin disassembly
you must first remove the two ¼" bolts from the top of the
lid. Only then will you be able to remove the lid and
disassemble the three outer panels.
Once you have removed the lid carefully check and confirm
that all ¼" copper tubing connections are intact and have
not broken or loosened in shipment. Leaks at any
connections on these lines will result in erratic appliance
operation.
1.4 WHAT THE LIGHTS MEAN ON YOUR
CAMUS APPLIANCE
The DynaFlame currently incorporates a printed circuit
board (PCB) on which have amalgamated relays,
connection points, local/ remote switch and lifetime LED
status lights.
Table 1: Diagnostic Lights
•
Light off means there is no power to
POWER
the appliance.
•
Light on indicates demand for
OPERATOR
operation (temperature or external
control).
•
Light on means high limit on back of
HIGH LIMIT
unit tripped.
•
Light on means no flow/low water
WATER
level or defective flow switch/low
FLOW
water cutoff.
•
Light on means problem with
AIR FLOW
combustion fan, dirty air filter, blocked
vent or fan shut off after 10 minutes in
flame failure. If optional low and/or
high gas pressure switches are
provided it may mean that the
appliance has shut off on a gas
pressure condition.
•
Light comes on only during start up
IGNITION
trials (3 trials standard and single trial
TRIAL
for CSD1, for CSD1; to reset push
and hold reset button on front of
electrical panel until red LED is lit on
ignition control).
•
Lit only when ratio control valve is
MAIN
energized. Valve will open only if
FLAME
proof of closure switch is closed (if
provided). Indicator in view window
shows position of valve stem. Light
will stay on only if burner is firing.
•
May momentarily light up during
FLAME
ignition trials. If appliance fails to start
FAILURE
the fan will shut down, the air flow
light will light up and the flame failure
light will stay on continuously.
* On a call for heat any light on past the operator
identifies where the problem is.
1.5 HOW IT OPERATES (SEQUENCE OF
OPERATION)
1 The power switch is placed in the "ON" position.
2 Supply power connection as per table 10.
3 120 VAC power is supplied to the control transformer
and Ignition Module on all models.
4 24 VAC is supplied to all low voltage controls for all
models.
5 After the appliance water pump starts, flow is proven
by the flow switch. The low water cutoff and flow switch
are shipped loose .The flow switch is to be mounted in
a tee at the outlet of the appliance. Take care to
properly trim the flow switch paddles so as not to jam
the switch in the tee. The normally open dry contacts in
the low water cutoff (LWCO) are to be wired in series
with the normally open contacts of the flow switch.
Locate the probe type LWCO in the piping above the
boiler inlet/outlet connection. In all cases check with
local codes.
6 Local or remote operator calls for heat and operator
light illuminates. If the appliance is provided with a
local remote switch the local control settings are to be
set above the normal maximum expected return water
temperature. In this way the local control will not
interfere with normal operation of the remote operator
and will prevent the appliance from cycling on its limit if
the appliance is switched over to local operation due to
a failure in the remote operating system.
7 The local thermostat initiates a start-up sequence once
it receives a heat demand. If the appliance is equipped
with a local/remote switch and if the switch is set in
remote, a heat demand is available only if the remote
system calls for heat.
8 The local thermostat energizes the motor stop/start
relay which closes the initiate contacts to the variable
frequency drive (VFD) which starts to ramp up the
frequency to the 230V 3 phase motor of the
combustion fan. If the VFD is not in fault mode the
frequency will accelerate at the preprogrammed rate
towards 60 Hz using the modulating signal provided by
the on board modulating control or the remote
operating system if the local/remote switch has been
ordered.
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