Questions tagged [zoned-heating]
The zoned-heating tag has no usage guidance.
37
questions
1
vote
0answers
23 views
Should I convert two AC units to a dual-zoned unit?
One-story 2200 square ft home, currently with two AC units, need replacing, which is better two AC units or a dual zoned hvac system?
-1
votes
1answer
30 views
Sun room hvac heating and air
I have a screened porch with one side brick and three walls screens. The ceiling is 1/2 inch plywood. The window guys from window world are coming out in a week or two to install windows and remove ...
0
votes
1answer
37 views
Run mini-split heat pump heads at different temperatures
I vaguely remember the contractor who did maintenance on our ductless heat pumps two summers ago telling us not to set the thermostats of the two small heads that share an outdoor unit to different ...
0
votes
0answers
23 views
Should I do away with the HVAC zone system entirely or spend the money to replace/update a non working system?
I know nothing about this but I have a two story 2000 sq. ft home built in 2006. The zone system failed. To update it will cost alot. To do away with the two zone system is much less. I'm not sure how ...
0
votes
1answer
30 views
Zoned Forced Air System Runs 2.5X Upstairs vs. Downstairs
I bought a house built in 2005, ~4100 sq. ft.
Reasonably insulated to code, as required in Chicago, IL.
I've got an upstairs thermostat and downstairs thermostat. Both are Nest thermostats ...
0
votes
1answer
30 views
Determining what zones are controlled by which thermostat
I purchased a quad plex. We live in the double unit on the first floor and have one thermostat which seems to call for heat in our zone. On the second floor there are 2 units with seperate thermostats ...
1
vote
1answer
44 views
Thermostat C wiring issue
I am having a two-wire system oil boiler with two-zone valves. I installed two Nest E and worked fine but it started to swing the valves due to the charging cycle. So I decided to run a new C wire ...
0
votes
1answer
197 views
c wire on a multi taco zone valve boiler
looking for assurance on what I think is the right setup to add a c wire to a current 2 wire zone setup. See pic of transformer junction box.
Currently I have 3 zones using one transformer and 3 taco ...
0
votes
0answers
24 views
Zone valves and air purge
I have a 3 zone boiler system with baseboard heating. Zone 1 & 2 have nest thermostats, zone3 has a non-programable thermostat. Zone 2 & 3 are not getting hot. Pipes are hot about 3-4 feet out ...
0
votes
1answer
23 views
Splitting a hydronic zone. Zone valves or separate circulator pump?
I had some plumbers take a look at my hydronic system to discuss splitting the single zone. They proposed to use separate zone pumps. In retrospect the other way to do this would be with zone valves. ...
0
votes
0answers
28 views
Boiler System heats one room more than all others
I have a two zone older natural gas boiler system. All rooms in the house get heat. One room on the second floor gets hotter than all others. Almost like all the heat is going to that room I don’t ...
1
vote
2answers
48 views
How to properly pipe a hydronic heating system
Background:
I am installing a hydronic radiant floor heating system myself and getting all the information required is a combination of many different websites. It doesn't seem like there is an all-in-...
0
votes
1answer
221 views
What are the steps to drain and refill zone for zone valve replacement?
I have a hot water baseboard (hydronic) heating system, gas boiler. Please refer to diagram of my system below. Ball valves 1 & 2 are supply. Ball valve 3 is return. Zone valves are on supply, ...
0
votes
1answer
55 views
Different wirings on 2 thermostats controlled by a 2 minizone system
I was replacing my 2 thermostats controlled by a 2 mini zone system (Trol-A-Temp). One of the thermostat has 6 wires/terminals (Y,W,R,G,O,B). The other one has 3 wires/terminals (Y,W,R). I was ...
0
votes
0answers
62 views
how to drain a specific heating zone?
I have hot water baseboard heating, with three zones. I would like to drain one of them in order to complete some renovations which requires moving some baseboard out of the way.
I'm not sure what the ...
0
votes
0answers
20 views
How to wire in gas boiler zone valves with out a zvc
Does anyone have a basic wiring schematic for wiring up 3 zone valves without a zone valve controller? They are honeywell zone valves. The boiler is brand new and everything is prewired. It just ...
1
vote
0answers
46 views
Are 8-Zone Wiring Centers Compatible With Smart Thermostats?
I'm looking at various wiring centers for gas boiler heating and I'm wondering if they're compatible with the major smart thermostats, such as Nest, Hive, and Honeywell.
Wiring Centers:
Reliance:...
0
votes
0answers
9 views
Honeywell Truzone Panel Power Issue
I redid pieces of my zoning system a few months ago but we had such a mild winter the furnace barely went on. Now that we're getting towards summer the old problems that I had are reappearing. I was ...
0
votes
0answers
695 views
Why is one of my four baseboard heat zones not working?
No heat in baseboard. How to bleed just one zone. Thanks! Please see picture. ?
I have a 4 zone valves.
1) water heater (works)
2) 1st floor air handler (works)
3) 2nd floor air handler (works)
...
2
votes
1answer
82 views
HVAC Heat only comes on when Fan is set to “ON” (not Auto)
have a weird problem that JUST started happening. When I turn the thermostat up with the fan set to "AUTO", nothing happens. The furnace does not light and the fan does not come on. This worked fine ...
0
votes
0answers
39 views
Boiler Zone issue after thermostat install
I just bought a new to me house, built in 1970. I replaced the old mercury thermostats with new programable digital ones. They worked great for the first 12 hours. Kept and read temps like it was set. ...
1
vote
1answer
23 views
Does manual operation of a Taco 570 series zone valve operate the boiler?
I have a home with multiple zones with the valves mentioned in the question. The documentation (http://www.taco-hvac.com/uploads/FileLibrary/100-3.pdf) isn't clear about whether contact 3 is ...
-1
votes
1answer
262 views
Zoned 2 stage heat pump system, aux heat not engaging
Homeowner here...I have a 2 stage heat pump split system with the ducting zoned for 2 zones. The units are as follows:
Compressor: Goodman GSZC16 heat pump
Zone control board: Honeywell HZ322
...
1
vote
0answers
41 views
Strange behaviour with 4 zone central heating timer (John Guest TM4 / Heatmiser TM4)
I have a 4 zone heating timer (HW, Underfloor Heating, Towel Rail and the 4th zone is unused).
I moved into a new build a few years ago. After 3 years my heating timer unit (John Guest TM4) started ...
0
votes
2answers
267 views
Why does a system boiler with hot water cylinder not use a diverter valve?
I understand that it doesn't need a diverter valve... But I was thinking, couldn't the system be more efficient with one?
For example, the central heating could run at a low temperature (35°-40°) and ...
11
votes
5answers
3k views
Most cost effective thermostat setting: consistent temperature vs. lowest temperature possible
The problem: Our heating bills are about 25% higher than our average neighbors according to our bill, yet our temperature is always as low as we can stand it (mid 50's), we have excellent insulation ...
1
vote
2answers
2k views
HZ432 and no heat in one zone
I have 4 zones... The following lights are on the HZ432:
Heat 1 - red
Heat 2 - red
Heat 3 - no light
Zone 1 - yellow
Zone 2 - red
Zone 3 - red
Zone 4 - red
I have heat in 3 zones, but not in one of ...
1
vote
1answer
15k views
Are these red lights on my Honeywell HZ432 why my bedroom isn't blowing in heat?
I just moved into a new multi-family house with central heat/AC and the 3rd floor bedroom doesn't seem to warm up very well. When the thermostat is on, I don't feel hot air blowing in from the vents ...
2
votes
1answer
476 views
Zone Controller T-Stat Wiring w/ 24V transformer, isolation relays for 2 zones
I have a new Navien SmartZone+ 6-Zone Control for my boiler-based heating system. It is great, except it provides no power on C.
I realize the internet has researched the heck out of adding a C ...
0
votes
0answers
40 views
Heat pump can't get a zone to 72° F
I have a heating system with both a heat pump and a boiler. The rule for the system is that if the temperature in a zone is 5° F less than called for, then the boiler will come on, but otherwise the ...
0
votes
1answer
418 views
Whole house humidifier when furnace is in unconditioned space
I have 2 furnaces, one in the garage and one in the attic. These are both spaces with unconditioned air, so they get very cold in the winter. The contractor who helped me configure my garage furnace ...
1
vote
0answers
1k views
How to wire a Taco zone valve controller with ecobee
I'm having an issue with wiring my Weil McLain gas boiler. It was wired up fine and working for a single zone. I added (2) 4 wire zone valves in. So I now have 2 zones, a Taco zone valve controller(...
2
votes
1answer
2k views
Can you use 1 ecobee thermostat to control 2 zone valves for heating?
I previously had a single zone set up with 1 circulator. So i added an extra zone. Still have 1 circulator pump and I also picked up a tacozvc 403-4 box to set it up. My question is how can i ...
0
votes
3answers
3k views
What are normally-open hydronic zone valves used for?
In a hydronic (hot water) heating system electronically operated valves control whether hot water runs through a particular zone of the building, or not.
It seems to be a common setup for the valve ...
0
votes
2answers
309 views
Difference between geothermal and regular hydronic zone valves
Taco makes two variants of zone valves - one type for general hydronic use, and another type marketed especially for geothermal use.
What is the difference in valves that particularly suits them for ...
1
vote
0answers
46 views
Some baseboard in one zone are getting hot and some are not
So I have one zone with two split loops. One loop is getting hot, the other is not. In the boiler room where the zone splits into two loops i can already feel that one is hot and one is barely warm.
...
1
vote
0answers
294 views
Nest + opentherm + zone valve
I have a Nest 3G, I'm now considering to change my boiler due to age-related issues. Can someone tell me if I can connect the Heat-Link to both zone-valve (on/off contacts) and boiler (OpenTherm).
I ...
