ML Multistage Thermostat Installation Guide Introduction The ML Stat is a multi-stage thermostat with adjustable parameters, incorporating a fan relay with adjustable over-run time. The stat has four stages which can be set-up for heating or cooling. There is an internal 7 day timer as well as the ability to set the stat for a remote time function (Using the GP timer in a data manager) or manually on or off.
ML Multistage Thermostat Installation Guide Relay Modules The ML controller is supplied in two parts, a panel mount display / control unit and a relay / power supply module in a black ABS enclosure. The two units are interconnected using the 5m lead supplied, the control unit derives it’s power from the relay module. All the terminals for power, control relays, networking and temperature probes are contained within the relay module as shown below.
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ML Multistage Thermostat Installation Guide 5 Relay module with RS485 connector (for connection to Genus compatible Network). 170mm 75mm 70mm Display Connection 1A Anti Surge Fuse RS485 Comms. Connector Functional Earth Supply Neutral Temperature Probe Connector Supply Earth 133mm 149mm Fixing Centre Functional Earth Note:...
ML Multistage Thermostat Installation Guide Parameter Tables Parameter Range Default Units Description P-01 Fans Mode 0 = Local Local Sets the Fans. Note the thermostat is 1 = Remote switched off when the fans are off. 2 = Man Off See : Remote GP Timer 3 = Man On...
ML Multistage Thermostat Installation Guide P-45 Stat 4 alarm delay 00:00 to 99:00 20:00 Mins:secs Time delay before the alarm occurs. P-46 Stat 4 OT alarm -60 to +60 / -76 to 140 30 / 86 Over temperature alarm set-point P-47 Stat 4 UT alarm -60 to +60 / -76 to 140...
ML Multistage Thermostat Installation Guide Inputs and outputs Selecting this menu option allows the user to view the inputs and outputs. Use the up/down button to select the desired input or output and then press “Enter”. The value will be shown on the display. See View IO Units Use this to select the temperature probe type.
ML Multistage Thermostat Installation Guide Network Configuration Network Compatibility To log the controller onto a network you must first connect the controller to a suitable IP comms module. Description Part Number IP Futura (Single Mercury to IP Interface) PR0016 Mercury IP Switch (IP support for 10 controllers) PR0018 Mercury IP Switch with Pressure/Humidity Inputs PR0018-PHI...
ML Multistage Thermostat Installation Guide IP-L To use the ML controller in IP-L mode, you will require either a PR0016 Mercury IP Module or PR0018 Mercury Hub. The rotary switches must be set to 000 on the comms module or 00 on the Hub In this mode the IP address and gateway address must be set up manually in the controller.
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ML Multistage Thermostat Installation Guide 485T Genus/Third Party Compatible The 485t option shows a value representing the network type. The possible values are: Value Network Type Genus compatible (all versions) Not Used in this version Not Used in this version Genus Compatible 485A Genus The 485A option shows a value representing either the name of the controller in a Genus compatible network.
ML Multistage Thermostat Installation Guide Operation: The stat has 4 relays which have their own set-points, diff and alarm settings. Each can be set-up as either a heating stage or a cooling stage. When set as a heating stage, the diff acts above the set-point; when set to cooling, the diff acts below the set-point. The thermostat function will not operate unless the fans are running.
ML Multistage Thermostat Installation Guide View I/O Press “Enter” in the menu at “IO” to view the inputs and outputs. Number Range (dependant on probe type) Step Units I-01 Probe 1 -60 to +60 / -76 to 140 I-02 Probe 2 -60 to +60 / -76 to 140 I-03 Probe 3...
Thermistor probe or 0V return Part Numbers ML Stat Controller, 5 Relay, RS485 Comms and Screw Terminals: PR0122-STA ML Stat Controller, 5 Relay, RS485 Comms and Screw Terminals: (100 Units): PR0122-STA-100 ML Stat Controller, 5 Relay, RS485 Comms and Screw Terminals: (10 Units):...
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