Q: Hello, I have a 23 yr old cylinder thermo. It is a Landis&gyr but NO
identification on it. Will the Siemens RAM1 be suitable ?
Thank you. J.C.
A: Hi. Yes it will.
Q: what is the temperature differential between on and off please?
A: It is 8±3K
Q: Hi, I need to replace a 'Switchmaster' cyl. stat. (can't see a No. but is blue with temp. control knob on top surface.)
It's an old system, fully pumped with 3 port valve.
Is this a suitable replacement with not too much wiring changes?
A: Yes, it will connect to the same wires.
Q: Would this thermostat work on a copper coil wrapped around the flue one of a wood fire once the temp got to 60 degrees turn the pump on and once the temp dropped below 60 turn the pump off.
A: It needs to be strapped on. So if the coil is tight up against the flue, you wont be able to get the strap around it.
Q: it this a high limit stat (to switch on a circulation pump when a wood stove boiler reaches 85C)
A: It is a control thermostat rather than a limit thermostat, so the pump would switch off again when it drops below 85C.
Q: Is this a 3 wire connection?
A: It can be either 2-wire or 3-wire.
Q: Hello - I have noted somewhere that this device requires a minimum current of 200mA to make it function "correctly". Is this correct, and if so why?
A: Yes, that's correct. Unfortunately, they have not given a reason for this requirement.
Q: Does this switch need a voltage supply to work or is it a bi-metallic switch
Does this switch make contact at upper level set in the switch
As I want to use it to turn a 12v circulation pump fitted to a wrap around wood burning boiler for central heating
A: It is a bimetallic switch type. It needs a minium current of 200mA to function correctly.
Q: how does this fit onto the hot water pipe?
A: You just strap it on. You can use a cable tie or similar to hold it.
Q: I have a Landis and Gyr that looks identical to this on our cylinder. I am not sure what temperature this should be set to? Also, I am assuming that the big pointy moulding on the front (pointing up to the dial) is the temperature setting marker?
A: Yes, it should be between 55 and 60.
Q: Would this cylinder thermostat replace a Landis&gyr
A: Assuming the model number is RAM1 as well, then yes.