How To Wire Multiple Heating Elements

How to Wire Multiple Thermostats Together
"Parallel" Thermostat Wiring to Control I Cooling or Heating Zone

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How tin can we use multiple temperature sensors or thermostats to control a unmarried heating or cooling zone in a edifice? You lot may not be able to wire two thermostats exactly in parallel, but using multiple wall thermostats or temperature sensors to command one individual heating or cooling zone is easier than you might think.

This article series explains how to command heating and cooling controls in buildings.

We as well provide an Article Alphabetize for this topic, or you lot tin attempt the folio peak or bottom SEARCH BOX as a quick way to find information you need.

Parallel or Multiple Room Thermostat Wiring Instructions

How to wire multiple remote temperature sensors to control a unmarried zone valve, circulator, heater, or air conditioner

Using widely-available Honeywell remote indoor temperature sensors and a Honeywell room thermostat that is designed to accept remote-control from wired thermostats nosotros tin can control any individual heating or cooling zone from one, two, or even up to nine dissimilar locations. Here nosotros describe the wiring details for that easy solution.

Alternative methods for using multiple temperature sensors to command a single heating or cooling zone, such as by wireless thermostats is discussed separately.

I demand to wire 2 unproblematic hydronic heat only T-Stats in parallel to independently activate a single Honeywell V8043 F 1036 Valve. Any gamble I can get a wiring diagram to complete this. I empathize the implications regarding the 2 T-Stats not working in synch but that is not an upshot.

@Patrick,

Give thanks y'all for a helpful question that I'd re-land equally:

How can I wire a unmarried heating zone valve to be operated by either of two separate room thermostats (in different rooms) or by both if both call for rut simultaneously.

I offer several answers here.

Best solution: Combine Remote Temperature Sensors with a Special Thermostat

[illustrated above] Use 1 (or you lot may need two) Honeywell C7189U Remote Indoor Sensors forth with a Honeywell VisionPRO 8000 with RedLINK technology, Programmable, 1H/1C, Touchscreen Thermostat.

Depending on the remote sensor model and thermostat model you choose, you may need to use two remote sensors (one can be in the same room equally the thermostat) because in at least some installations when remote sensors are used the thermostat's ain internal room temperature sensor is out of operation.

Wiring instructions are in this

HONEYWELL C7189U REMOTE INDOOR SENSOR INSTALLATION Transmission [PDF] Honeywell International Inc., 1985 Douglas Drive North, Golden Valley, MN 55422 USA Website: yourhome.honeywell.com

This a wired device. There are also wireless thermostat alternatives that tin can operate a zone valve, circulator relay, (banality - hot water heat) or a forced air organisation (warm air furnace oestrus)

Watch out: Honeywell explains:

Once a remote indoor temperature sensor is connected to the thermostat, the thermostat'due south sensor is no longer used. The thermostat's installer setup should exist modified to tell the thermostat that remote indoor temperature sensor(s) accept been used. The Inside temperature reading on the thermostat's brandish will be the remote sensor(due south) temperature location(south).

That's why I said yous may need to use ii remote temperature sensors forth with the contolling thermostat itself.

Likewise download this example

HONEYWELL VisionPRO® Serial with RedLINK™ INSTALlATION GUIDE [PDF]

This approach permits use of multiple remote temperature sensors (from 1 to 9), any of which can plough on the heat - in your case by operating the zone valve.

It avoids the problem with improper thermostat current draw and possible heat anticipator malfunction that could occur if we simply wired-upwardly 2 older style room thermostats in parallel.

The wiring diagram below shows correct wiring when using multiple Honeywell C7189 remote temperature sensors with a VisionPro RedLINK Thermostat.

The installation instructions bear witness that the sensors are wired in series through to the thermostat S1 and S2 terminals.

Up to 9 sensors, wired in parallel sets of three at a fourth dimension, can exist connected to the base of operations thermostat.

Watch out: Be certain to review the specific thermostat and remote sensor features and wiring instructions before buying and having these devices installed.

Possible solution: some thermostats may be wired in parallel

Depending on the thermostat models chosen, this approach may not be as rubber: simply wire up two room thermostats in parallel, either or both of which can turn on the oestrus past operating the zone valve. Many modern electronic thermostats practice not include a traditional resistor-type heat anticipator.

Spotter out: if these thermostats use a conventional heat anticipator information technology may not work properly when two thermostats are wired in parallel on the same excursion and when both are calling for heat.

More well-nigh heat anticipators is at HEAT ANTICIPATOR Functioning

Possible solution when need to control both cooling & heating

Use a separate Equipment Interface Module.

For readers who demand to control both heating and cooling equipment from multiple rooms or locations, have a look at the Honeywell Equipment Interface Module (EIM) that can work with all Prestige IAQ and new RedLINK VisionPRO Thermostats.

Run across this HONEYWELL EQUIPMENT INTERFACE MODULE INSTALLATION GUIDE [PDF]

References for Wiring Multiple Thermostats or Sensors to Control One HVAC Zone

• Oestrus ANTICIPATOR ADJUSTMENT
• HONEYWELL C7189U REMOTE INDOOR SENSOR INSTALLATION MANUAL [PDF] Honeywell International Inc., 1985 Douglas Drive North, Golden Valley, MN 55422 Us Website: yourhome.honeywell.com
• HONEYWELL EQUIPMENT INTERFACE MODULE INSTALLATION GUIDE [PDF]
• HONEYWELL VisionPRO® Series with RedLINK™ INSTALlATION GUIDE [PDF]
• THERMOSTATS for RESIDENTIAL HEATING & COOLING TRAINING Grade [PDF] White Rodgers, Division of Emerson Electric, 9797 Reavis Rd., St Louis MO 63123 and Markham (Torongo) Canada, preparation form on thermostats, includes terminal quiz.

...

Go on reading at THERMOSTAT WIRE CONNECTIONS - dwelling, or select a topic from the closely-related articles below, or run across the consummate Article Alphabetize.

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