5070THPR 4 Zone Thermostat

Here's a bit more info:

Thermostats will come in two models, each with two variants (so four catalogue numbers in all).

The models are a single zone basic, and a four zone advanced / programmable.

The variants are that they are both available with and without on-board relays. There are 5 relays in the version with them, these are 24 V ac relays for use in 24 V ac HVAC control circuits, the wiring arrangement is typically known as "RWG". These relays ARE NOT MAINS RATED, don't try to use them as standard cbus relays!

The advanced / programmable thermostat has a 7-day scheduler built in, the basic thermostat does not.

The thermostats can operate in master / slave mode (so you can have one wired up to the HVAC plant, and the other one operating like a mimic, allowing display and control).

You can have many thermostats on a single cbus cable all controlling the same zones (ie master / slave), but you can also have many thermostats controlling different zones ON THE SAME CABLE, and they then won't interfere with each other.

Thermostats can control at least the following plant types (and some combos that are possible are not shown here):

Heating:
- Furnace (Gas, Oil, etc);
- Electric;
- Heat pump - heating only;
- Hydronic

Cooling:
- Evaporative;
- Heat pump - cooling only;
- Fan coil (chilled water / hydronic)

Heat / Cool combinations:
- Heat pump - reverse cycle;
- Gas /Furnace Heating + Evap Cooling;

Multiple heating and cooling stages are supported.

The 4 zone thermostat is capable of sensing the temperature in each of the 4 zones and controlling the zones either by an averaging arrangement or by damper modulation - if your dampers allow.

Both models support a remote cbus temperature sensor WHICH WONT BE AVAILABLE ON FIRST PRODUCT RELEASE because its still coming. The existing cbus temperature sensor CANNOT be used for this purpose, so don't ask for it.

Both models support Setback - an option to save energy by relaxing the regulated temperature band (its normally trying to hold the temperature to within about 1/2 degree of the set point). Activating setback relaxes this to some installer set value, maybe +/- 2 to 5 degrees depending on what your installer wants to set it to.

There are also a few other features but this should do as a teaser.

To reiterate - the thermostats will operate with 24V ac controlled equipment using the "RWG" wiring arrangement, which is fairly common in the industry. If your equipment uses some other strange method of control - for example, proprietary buses, then these thermostats almost certainly won't be suitable. (Lesson: You need to know the method used for attaching a thermostat to your equipment.)

Hope that helps.