J
josh
Have been working in a hotel (27 rooms with ensuites) changing staff toilets and adding a radiator and would like to have more of an understanding of some of the bits in the plant room.
The plant room has 4 boilers (potterton osprey 2) with 5 heating zones and the older bigger grundfos pump in pic 5 serving 4 open vent cylinders, one being horizontal.
Would be grateful if anyone had the time to explain their function and how they work a bit.
have put pictures up of the bits in a new set on my flickr:
Hotel heating questions? - a set on Flickr
pic 1: The middle part of this valve just drops to the floor, is the only purpose of this for draining down or does it do something else aswell?
pics 2 + 3: These valves i have seen elsewhere but the middle part of the valve goes to the return and have a balancing valve on it, how exactly do they work and what do you set the balancing valves to that come from the middle part of the valve? The minimum flow rate of the boilers?
pic 4: I know these are temp sensors and are on every flow but how are they operating/controlling within the system? there is also one on the main flow from the boilers, again how is that linked in and working to control the boilers?
pic 6: I know this is for shutting of the gas supply should a fire break the fusible link and if you did an install with a link now you'd have a solenoid instead to shut of the gas supply, right or not?
If the link was broke, for example by an employee somehow, could you reset it simply by puling the lever back by putting the link wire correctly back in place under tension?
pic 7: I know these are for balancing purposes on the returns, when on the returns from a heating circuit are they just set to the maximum flow rate required by that circuit? and again if they are on a single heat emitter, say a fan heater with a coil they are set to the maximum flow rate required by that product?
Finally pic 8: Are these just lockshields? A few about but the one in the pic is on the secondary tapping on the cylinders from the bronze pump with a lever valve been cut in before it.
I don't expect them all to be answered as i'v asked a lot but just a bit more information would be good just for my own knowledge really, i'm only 22 and still have a hell of a lot to learn.
Thought i'd put it in the private gas safe section to keep it sort of in house if you know what i mean.
Thanks again for any help.
Josh.
The plant room has 4 boilers (potterton osprey 2) with 5 heating zones and the older bigger grundfos pump in pic 5 serving 4 open vent cylinders, one being horizontal.
Would be grateful if anyone had the time to explain their function and how they work a bit.
have put pictures up of the bits in a new set on my flickr:
Hotel heating questions? - a set on Flickr
pic 1: The middle part of this valve just drops to the floor, is the only purpose of this for draining down or does it do something else aswell?
pics 2 + 3: These valves i have seen elsewhere but the middle part of the valve goes to the return and have a balancing valve on it, how exactly do they work and what do you set the balancing valves to that come from the middle part of the valve? The minimum flow rate of the boilers?
pic 4: I know these are temp sensors and are on every flow but how are they operating/controlling within the system? there is also one on the main flow from the boilers, again how is that linked in and working to control the boilers?
pic 6: I know this is for shutting of the gas supply should a fire break the fusible link and if you did an install with a link now you'd have a solenoid instead to shut of the gas supply, right or not?
If the link was broke, for example by an employee somehow, could you reset it simply by puling the lever back by putting the link wire correctly back in place under tension?
pic 7: I know these are for balancing purposes on the returns, when on the returns from a heating circuit are they just set to the maximum flow rate required by that circuit? and again if they are on a single heat emitter, say a fan heater with a coil they are set to the maximum flow rate required by that product?
Finally pic 8: Are these just lockshields? A few about but the one in the pic is on the secondary tapping on the cylinders from the bronze pump with a lever valve been cut in before it.
I don't expect them all to be answered as i'v asked a lot but just a bit more information would be good just for my own knowledge really, i'm only 22 and still have a hell of a lot to learn.
Thought i'd put it in the private gas safe section to keep it sort of in house if you know what i mean.
Thanks again for any help.
Josh.