Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 11-11-2012, 08:58 AM   #1
Member
 
Join Date: Nov 2012
Location: Ashland MA
Posts: 41
Share |
Default

Is this right? One heat zone (thermostat) seems to govern the other three


I have a four zone heat system with a Burnham gas forced hot water boiler to baseboard radiators. I can't get the other three thermostats in my home to call for heat unless the 'main' thermostat (the one that controls heat/cool/fan) in the Master Bedroom calls for heat. I have almost no experience with this type of heating system, but that seems to defeat the benefit of multi zone heating as the heat in our master bedroom needs to be on if we want heat in the living room, office, or guest rooms.

All four thermostats are Honeywell dials. One of the 'slave' thermostats is simply R/W two wire and green wire was capped off. Haven't checked the 'master' thermostat yet.

I discovered this quirk when I upgraded one of the dials to a programmable thermostat. Couldn't get the new stat to call for heat. Thought it was a wiring problem until I noticed I couldn't get the remaining two 'slave' dials to call for heat either unless heat was on in Master bedroom. With heat in MB on, dials and new programmable works.

Is this one of those 'not a bug but a feature' type deals?

mikestorm5 is offline   Reply With Quote
Old 11-11-2012, 01:41 PM   #2
Member
 
Join Date: Jun 2012
Posts: 211
Default

Is this right? One heat zone (thermostat) seems to govern the other three


sounds like someone rewired the control wiring by the zone valves so all come on at the same time so the boiler wont cycle all the time.
you need to check how the wireing is by zone valves.

hvac instructor is offline   Reply With Quote
Old 11-11-2012, 03:08 PM   #3
Member
 
Join Date: Nov 2012
Location: Ashland MA
Posts: 41
Default

Is this right? One heat zone (thermostat) seems to govern the other three


Thanks for reply. Below is a photo of my zones, which I'm pretty sure doesn't tell you anything. Is there anything else I should photograph? Wires all come from a junction box with the phrase '24 volt system' written on it in sharpie.

mikestorm5 is offline   Reply With Quote
Old 11-11-2012, 04:59 PM   #4
Member
 
Join Date: Jun 2012
Posts: 211
Default

Is this right? One heat zone (thermostat) seems to govern the other three


if all thermostat wires goes into a junction box thats where most likely tied together.
you will need a wire diagram on the zone valve and boiler to correctly have it operate.
I dont know how good you are with electrical control circuit. might need an HVAC tech. look at it.
make sure they know zone valves.
normal operation is when any thermostat calls for heat and zone valve opens the end switch in valve will start the pump.
hvac instructor is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heat pump starts initially but will not come back on to maintain temps johnniebravo HVAC 53 11-22-2011 07:48 PM
Replacing thermostat, no heat (heat pump, 2 stage heat, 1 stage cool) BrianJM HVAC 20 09-28-2011 09:53 AM
heat pump wiring problem - new thermostat tygrr94 HVAC 8 01-17-2011 08:18 PM
Thermostat Heat Pump Wiring difficulties akg4y HVAC 8 04-15-2010 05:16 AM
changed thermostat on York Affinity, now no heat? sotwell HVAC 1 03-01-2009 05:34 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.