46
0 - 10 VDC
RS485
R
REAR WIRING
BOX
PUMP
CONTACTOR
(BY OTHERS)
24VAC
PUMP
POWER
SUPPLY
L
N G
RESISTOR
500 OHM
0.25 - 0.5 WATT
TACO VR VIRIDIAN PUMP
RELAY
NC
NO
C
+24V SET3 SET2 0 V SET1
ETHERNET
LED2 LED1
+
-
HOT
RET
L
N
G
Figure 47. VS Pump Wiring Diagram
Ignition Control Functions
When there is a call for heat, and all safeties are closed
and minimum flow rate detected, then the combustion air
blower starts to purge air from the combustion chamber.
After the pre-purge, the igniter is energized. The standard
ignition module will lock-out after failing to light 3 times
during a call for heat. To reset the lock-out, press and
release the RESET button located adjacent the user
interface. The control will automatically reset after 1 hour.
When in lock-out the control will run the blower through a
post-purge cycle.
The single-try ignition module (part of the CSD-1 option)
will attempt to light only one time before lock-out occurs.
To reset the lock-out, press and release the RESET button
located adjacent the user interface.
Turning off the power to the heater WILL NOT reset the
single-try ignition module.
NOTE:
Ignition modules are common for all XFiire model
sizes. However, model-specific operating parameters
are defined by their respective ID cards.
3-Position Rocker Switch
This heater is equipped with a 3-position rocker switch
located on the front control panel (adjacent the touchscreen
display).
The 3-positions of this switch are:
Right = OFF
Middle = IDLE
Left = RUN
When the switch is in the OFF position, there is power to
the control and the heater is not operational.
A
A
WARNING:
There is still live electricity inside the
heater - disconnect electrical supply to the heater before
servicing the heater.
When the switch is in the IDLE position, power is supplied
to the control to allow for review/adjustment of settings, but
the heater will not fire.
A
A
CAUTION:
The Enable/Disable signal may be
overridden when the VERSA control is configured for
MODBUS "TEMP" or "RATE". Disable MODBUS prior to
servicing the heater.
When the switch is in the RUN position, the heater is
enabled to operate based on the water temperature and
target temperature setpoint.
High Limit - Manual Reset
This heater is equipped with a fixed-setting manual reset
high limit temperature device as standard. It may also
have an additional optional adjustable manual reset high
temperature device.
The optional manual reset high limit is located inside the
cabinet on the upper right corner post. See
Figure 2.
STANDARD
(Fixed)
OPTIONAL
(Adjustable)
Figure 48. High Limit (Manual Reset) (MRHL)
Содержание Xfiire 1000B
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