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NO BOILER SENSOR
The GEO 360 is capable of operating without a boiler sensor if desired. Without a boiler
sensor, the GEO 360 provides a boiler enable as described in the BOILER ENABLE section,
but is unable to provide boiler protection. This type of application is typical if the GEO 360 is
drawing heat from a heat source that already incorporates some form of boiler protection.
BOILER ENABLE
(
30% Enable
/
10% Enable
)
The GEO 360 has a DIP switch that allows for the selection between a 30% boiler enable and a 10% boiler enable. This switch
is only functional when the
Boiler Sensor
DIP switch is set to
Return
. i.e. on an Oil Fired Boiler.
In the 30% position, the GEO 360 closes the
Boiler
contact when the position of the mixing valve exceeds 30%. The
Boiler
contact remains closed until the position of the mixing valve reduces below 15%. This setting would normally be chosen for low
mass boilers (copper fin-tube, etc.) or systems with low thermal mass in the loop between the boiler and the mixing valve.
In the 10% position, the GEO 360 closes the
Boiler
contact when the position of the mixing valve exceeds 10%. The
Boiler
contact remains closed until the position of the mixing valve reduces below 5%. This setting is normally chosen for high mass
boilers (cast iron, steel, fire-tube, etc.) or systems with large thermal mass in the loop between the boiler and the mixing
valve.
In order to prevent short cycling, the
Boiler
contact has a minimum on time, and a minimum off time.
CAUTION
Improper installation and operation of this control could result in damage to the equipment and possibly even personal injury. It
is your responsibility to ensure that this control is safely installed to all applicable codes and standards. This electronic control
is not intended for use as a primary limit control. Other controls that are intended and certified as safety limits must be placed
into the control circuit. Do not open the control. Refer to qualified personnel for servicing. Opening voids warranty and can
result in damage to the equipment and possibly even personal injury.
STEP ONE
GETTING READY
Check the contents of this package. If any of the contents listed are missing or damaged, please contact your place of purchase
for assistance.
Type GEO 360 includes:
One Grant Efficiency Optimiser GEO 360, One GEO 360 Outdoor Sensor, Two GEO 360 Universal
Sensors, One GEO 360 Wall Plate, One GEO 360 Indoor Sensor, One GEO 360 Sensors Data Brochure, and One GEO 360
Data Brochure
Note:
Carefully read the details of the
Sequence of Operation
to ensure that you have chosen the proper control for your
application.
STEP TWO
MOUNTING THE BASE
Installation
No Boiler
Sensor
Press down at the fingertip
grips on top of the front cover
and pull out and down.
Lift the front cover up and
away from the control.
Loosen the screws at the
front of the wiring cover.
The wiring cover pulls
straight out from the
wiring chamber.
Remove the safety dividers
from the wiring chamber by
pulling them straight out of
their grooves.
Press the control release clip
on the base inside the wiring
chamber and slide the control
upwards.
The control lifts up and away
from the base.
The base is ready for
mounting. There are 10
conduit knock-outs at the
back and bottom of the
wiring chamber.
Release Clip
13 mounting holes
