tekmar 284 Boiler Control - Manual (Page 54)

© 2014 284_D - 08/14 54 of 60 A Watts Water Technologies Company
Commissioning, testing & troubleshooting features of the 284
are accessed by holding the Manual Override button for 3
seconds. Once an item is selected in this menu, there is a 3
second delay before the feature activates. The Manual Override
has five different modes including:
Automatic (AUTO) -------------------------------- --------------------------------
The normal operating mode for the control is automatic. The control
operates based on the settings, calls & current conditions.
Purge Override (PURG) --------------------------- ---------------------------
In this mode, the control overrides the normal operating mode
& operates pumps. This mode is useful for purging air out of
the system.
Primary pump: operation of the primary pump is dependent
on the system settings in the Setup menu. Only one enabled
primary pump is turned on. If both primary pumps are
enabled, primary pump 1 is turned on. If primary pump 1 is
disabled & primary pump 2 is enabled, primary pump 2 is
turned on. If both primary pumps are disabled, no primary
pump is turned on.
IDHW pump: operation of the IDHW pump is dependent on
the system settings in the Setup menu. If IDHW Mode is
turned on, the IDHW pump is turned on. If IDHW Mode is
turned Off, the IDHW pump is not turned on.
When in Purge mode, ‘PURG’ & ‘OVR’ will scroll in the status
field of the display.
Purge will operate for a fixed period of 72 hours. After the
purge period expires the control will revert to Automatic
operation. The purge override can also be terminated by
selecting the AUTO override mode.
Max Heat Override (MAX) ------------------------- -------------------------
In this mode, the control overrides the normal operating mode
& operates the system to maintain a boiler target temperature
of 230°F. This function is useful on start-up & commissioning,
& also when drying sheet rock & paint in the building.
Operation of the equipment is dependent on the system.
WWSD, IDHW & Setpoint Priority are disabled during Max
Heat.
While in Max Heat mode, ‘MAX’ & ‘HEAT’ will scroll in the
status field of the display.
Max Heat will operate for an adjustable timeout period.
After the timeout period elapses the control will revert back
to Automatic mode. The max heat override can also be
terminated by selecting the AUTO override mode.
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Hand Override (HAND) --------------------------- ---------------------------
In this mode, the control overrides the normal operating mode
& allows for manual operation of the equipment. This mode is
useful for testing & assisting with troubleshooting.
Operation of the equipment is dependent on the settings in
the Setup menu. Refer to the ‘Selecting a Manual Override
Mode’ for the sequence of steps.
While in Hand mode, ‘HAND’ & ‘OVR’ will scroll in the status
field of the display.
Hand mode will operate for an adjustable timeout period.
After the timeout period elapses the control will revert back to
Automatic mode. The hand override can also be terminated
by selecting the AUTO override mode.
Off Override (OFF) -------------------------------- --------------------------------
In this mode, the control overrides the normal operating mode
& forces the entire system off. This mode is useful for conduct-
ing maintenance or changeout of mechanical components in
the system.
While in Off mode, ‘OFF’ & ‘OVR’ will scroll in the status
field of the display.
The Off override can be terminated at any time by selecting
the AUTO override mode.
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Manual Override