CH pressure variation
What kind of variation should I expect between off and running?
Off (cold) it's about 1.5 bar rising to around 2 bar when hot. New system, Worcester Bosch Greenstar 30cdi Cheers. |
CH pressure variation
We were somewhere around Barstow, on the edge of the desert, when the
drugs began to take hold. I remember "fred" saying something like: What kind of variation should I expect between off and running? Off (cold) it's about 1.5 bar rising to around 2 bar when hot. That's perfectly normal. -- Dave GS850x2 XS650 SE6a "It's a moron working with power tools. How much more suspenseful can you get?" - House |
CH pressure variation
On Thu, 2 Oct 2008 23:39:53 +0100, "fred" wrote:
What kind of variation should I expect between off and running? Off (cold) it's about 1.5 bar rising to around 2 bar when hot. New system, Worcester Bosch Greenstar 30cdi Cheers. That's fine, although I would check the instruction book as 1.5 is a tad high for cold, but nothing to worry about. |
CH pressure variation
"EricP" wrote in message ... On Thu, 2 Oct 2008 23:39:53 +0100, "fred" wrote: What kind of variation should I expect between off and running? Off (cold) it's about 1.5 bar rising to around 2 bar when hot. New system, Worcester Bosch Greenstar 30cdi Cheers. i have my (halstead combi) at 1 bar cold, it goes upto 2 bar when hot, prolly a result of the mix of 15mm an 8mm microbore pipes in the system, (2 rads are on microbore, the rest on 15mm, why i dont know, but the ones on the microbore heat up faster than the 15mm ones) The central heating in my motorhome sees an even larger cold to hot pressure differance, but that runs at 85 degrees C rather than the 55 a home system runs at, |
CH pressure variation
In article ,
EricP writes: On Thu, 2 Oct 2008 23:39:53 +0100, "fred" wrote: What kind of variation should I expect between off and running? Off (cold) it's about 1.5 bar rising to around 2 bar when hot. New system, Worcester Bosch Greenstar 30cdi Cheers. That's fine, although I would check the instruction book as 1.5 is a tad high for cold, but nothing to worry about. It depends on the vertical distance between the guage and the highest point on the system. If you have 30' or more above the guage, you will need more than 1 bar. -- Andrew Gabriel [email address is not usable -- followup in the newsgroup] |
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