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Posted by HeatPro on November 18, 2004 at 14:05:49:
In Reply to: Making a single loop into two zones posted by Boiler newbie on November 18, 2004 at 10:37:11:
: Is is possible to wire a circulator incorrectly?
*** DEPENDS large circulators can have motors for 120v or 230 v and rotation. Usual residential circulators - mostly no, as they are AC.
Or is it AC and doesn't matter? A new one was installed and need to hook up previous wires. There isn't any disctintion on the circulator's wires.
: My plumber put the expansion tank and circulators on the return side. Is that OK? it's a fairly small system.
*** There are thousands of systems installed that way, most work, even if they are not technically the best.
: We split the original zone in two using a multiple series circuit design. Do I need a second "pump relay"?
*** Yes, if you do not have a double circulator relay.
Do they make relays that control both zones?
Yes.
I have separate thermostats installed. The existing relay is a L8048 Honeywell.
*** Not enough for two zones
: Based on the multiple series circuit design diagram on the site, it looks like there should be Flow Control Valves... I don't believe he put those in. Are they required? He says the circulators are designed to prevent this.
*** Some circulators have the flow check built-in.
: Thanks for any input.