Table of Contents
Advertisement
INSTALLATION
CONTROL SCHEMES
For individual, direct control installations, Climate Wizard coolers
are supplied from the factory with:
(a) MagIQcool Control Kit and a 20m (65') control cable and
(b) a MagIQtouch MS1 BMS Industrial Controller
Other control options are available as alternatives to the supplied
control equipment. The MagIQtouch Controller, the MagIQtouch
ILL3508-A
Switch Plate controller and the M1 BMS Industrial Controller are
all compatible for use with the Climate Wizard CW-P15 cooler.
These make it possible for the cooler to be controlled
independently and automatically from the zone to which it is
delivering cool air. The MagIQtouch and MagIQcool incorporate
a thermostat that regulates fan speed to maintain indoor
temperature within + 0.5°C (+ 1°F) of the set temperature. Climate
Wizard coolers are also supplied with input/output connectors via
a MagIQtouch MS1 BMS Interface module to enable the cooler
to be controlled from an external location, using a modbus BMS
system.
Whichever control option is being used, the inbuilt Climate
Wizard water management and fault monitoring features
are always functional. The Climate Wizard control scheme
incorporates some parameters which can be altered to other
settings if the default settings are not suitable.
BUILDING MANAGEMENT SYSTEM (BMS)
INTERFACE (OPTIONAL)
Refer to the Installation & Operation Manual for MagIQtouch
MS1 BMS Industrial Controller, included with the cooler.
This can be set up to control the Climate Wizard from
EXTERNAL devices, such as PLCs and Building Management
Systems.
Note! Even if a BMS is used, it is suggested that technicians
obtain a MagIQtouch Wall Controller as a tool for use during
servicing. The MagIQtouch Controller provides additional user
and technician functions when compared to the MagIQcool
Controller.
WATER MANAGEMENT SYSTEM OPERATION
Tank (reservoir) drain control
Drain opens when:
• COOL mode switched OFF and tank drain delay is activated.
Drain pump cycles for a period to remove water from the tank
See "Parameters" below for time delay options
• Salinity Control demands the tank (reservoir) to be drained.
(Refer to the Salinity Control section following).
Inlet solenoid valve control - water
• Opens if water level is below the bottom probe.
• Remains open until water level reaches top probe.
• Opens at any time that Salinity Control demands fresh water.
Pre-wet start up cycle
This will start once the water has reached the top probe and
ensures the cores are fully saturated when COOL mode is
activated.
The operation of the circulation pump for the pre-wet start-up
cycle is as follows:
• ON for 30 seconds
• OFF for 40 seconds
• ON for 30 seconds and then both fans start running at control
speed setting
• OFF for 8 minutes and 30 seconds while the fans remain
running at control speed setting.
• Pre-wet always occurs when COOL mode is selected after
mains power interruption.....
If the cooler has been in COOL and not VENT mode in
the last 30 minutes and COOL mode is re-selected, the
Pre-wet start up cycle will not activate and the cooler
ILL2364-A
will resume normal operation.
Pump control
• When COOL is selected, fan and pump will start 30 seconds
after water level has reached the top probe
ILL2264-A
• After a pre-wet the pump then cycles continuously:
ON for 30 seconds OFF for 8 minutes and 30 seconds. Total
Cycle time = 9 minutes.
Salinity Control
Water Conductivity sensing:
• Measures water conductivity for 10 seconds in every minute
ILL3506-A
• When conductivity exceeds the upper set point the water inlet
solenoid valve is opened to allow fresh water entry.
• Monitoring of conductivity is continuous during this cycle.
• Inlet solenoid valve remains open until water level reaches
top probe, then it closes.
• If water reaches top probe, but conductivity is still too high, a
drain cycle starts.
• Drain pump activates until water level falls below bottom
probe, then draining stops immediately, and inlet solenoid
valve opens to refill the reservoir.
• Senses conductivity down to 9µS (app. 4ppm) (ie: rain water).
Water Usage sensing (for High Salinity Water)
(optional to Water Conductivity sensing)
• Number of times that reservoir is filled from bottom probe to
top probe is counted. When this count reaches 8, a drain cycle
is initiated.
• Drain activated until water level falls below bottom probe, then
draining stops immediately, and inlet solenoid valve opens to
refill the reservoir.
• Pumps run at any time during the salinity drain cycle.
Chlorinator Control
The chlorinator is a pair of specially treated plates. When
energised and submerged in water, electrical current flows
between them, generating chlorine. There is one (1) set of
chlorinator plates in the Climate Wizard. Chlorine is known to kill
bacteria in water supplies and the Climate Wizard Chlorination
system is designed to minimise bacteria levels within the cooler.
• Chlorinator is active at all times that the cooler is in COOL
mode, AND the water level is above the bottom probe except
when the salinity control is sensing (50 seconds in every 60
seconds) AND the water conductivity is >1500µS/cm.
• In the event that the water conductivity is <1500µS/cm for an
extended period of time, a 24 hour clean tank drain cycle will
commence.
SEELEY INTERNATIONAL - INSTALLATION MANUAL CW-P15 859740-G |
14
Hide quick links:
Advertisement
Table of Contents
