Room Temperature Controls

A comprehensive range of room temperature control products compliments Polyplumb floor heating systems. The control packs below are designed specifically for floor heating, which is controlled differently to radiator systems.

Controlling floor heating

The control of floor heating systems is different to that of conventional radiator systems, as the space should not be allowed to cool completely during the heating season. The temperature during unoccupied or night time periods should fall to around 4°C lower than the occupied temperature. This lower temperature setting is known as the set-back temperature, eg occupied temperature 21°C, set-back temperature 17°C.

Individual room control

Polyplumb floor heating controls allow each room to be individually controlled, through programmable room thermostats and a master wiring centre, that when connected to valve actuators (PB00401) allow each room to have individual time and temperature settings.

As the desired room temperatures are achieved, the actuators to those circuits will close. When all rooms on a manifold are satisfied the manifold pump will stop, the zone valve will close and the signal to the boiler will be cut. As all individual rooms are heated only when they are required the system ensures maximum comfort and system efficiency.

The number of control zones you require will depend on the number of rooms you wish to control individually. The 4, 6 and 8 zone packs describe the number of areas you wish to control, not necessarily the number of circuits you are supplying from that manifold. To optimise the use of each control pack you will need to understand the following guidelines:

• The 4 zone pack contains 4 room thermostats, the 6 zone pack contains 6 room thermostats and the 8 zone pack contains 8 room thermostats.
• Each room thermostat can control 1 zone and up to 4 actuators.
• Rooms over 40m² should be allocated as 2 zones and have 2 room thermostats.
• An actuator is required on each circuit that requires control.
• Circuits serving small areas, WC’s, cloakrooms, dressing rooms etc, can be installed as subservient rooms, ie controlled by a room thermostat in the master room, eg hall and WC, bedroom and dressing room.

Control equipment

The 4 zone master unit provides wiring connections for the boiler (including volt free), zone valve, UFH pump, and up to 4 programmable room thermostats (control zones) and actuators (maximum 4 per zone). A 4 zone master unit is required at each manifold.

The 4 zone slave unit simply plugs into the master unit and provides additional connections where more than 4 programmable room thermostats (zones) are required. Wiring connections for an additional 4 programmable room thermostats (zones) and subsequent actuators are provided.

Programmable room thermostats (PBPRP)

The programmable room thermostat provides time and temperature control in each zone. Features include:

• 7 day programmer
• Set-back temperature setting
• Frost protection programme
• Holiday programme
• 5 pre-set programmes for easy set up
• No loss of programming when battery change required
• Can be connected to wet room sensor (PB23020)

Wet Room Sensor (PB23020)

Where time and temperature control needs to be applied to a bathroom or wet area, the wet area sensor can be installed within the wet room and connected to the programmable room thermostat installed in an adjacent dry area.

The sensor is supplied with 3m of cable and can either remain in the supplied housing and be wall mounted, or removed from the housing and used as a floor surface sensor.

Follow link to buy Water Control Packs on-line.

Examples (1 & 2) : material scheduling for typical four bedroom property