Powrmatic MC300 multi, MC200 User Manual

MC300 Multi

with Remote Units

Users

Instructions

BSI Registered Firm

FM 414

Ind. & Comm. Air Heaters;

Air Moving Equipment;
Flues & Chimneys; Natural
Smoke & Heat Ventilators;
Powered Supply & Extract

HEATING DIVISION

Hort Bridge

Ilminster, Somerset TA19 9PS

Tel: [phone] Fax: [phone]

Every effort is made to ensure accuracy at time of going to press. However as part of our policy of continual product improvement, we reserve the right to alter specifications without prior notice.

MC300 Multi User Instructions Issue 1.3 June 2015

Fans & Systems.

ISO 9001

1. General Description

The MC300 Multi is a high specification heating controller to meet the demands of modern fuel efficient heating equipment
and the latest energy saving and environmental guidelines.

It is designed to control up to 5 heaters using 24V DC signals over small diameter multicore cable. The MC300 Multi is the
master unit and each controlled heater is fitted with a remote board to interface the MC300 Multi signals with the heater
controls.

Optimum start technology is available that will continually monitor the heating systems previous performance to determine the
optimum time to turn the heating on to raise the space temperature to the required level for when occupancy begins. Optimum
stop can also be selected which can save energy at the end of the heating period.

The control uses a simple menu based structure for entering User settings and is protected by 2 levels of password. The User
password may be set to restrict access to certain User controls. The second password is for use by commissioning and servicing
engineers and allows access to parameters normally used only in the initial setting of the controller, a fault log and system reset
facility.

The user keypad allows easy selection of the heating and fan only modes, the override functions and fault reset. These may
also be locked in various combinations to allow different levels of user accessibility.

The MC300 Multi can give a readout of the hours the burner has operated, to help accessing servicing intervals and after being
programmed with the correct data, can also give an indication of the running costs of the heating appliance. In addition a
forward service date can be programmed. When the due date is reached a notification will be shown which alternates with the
normal display. This notification can only be removed by a Service Engineer.

The MC300 Multi can be used to directly control both Hi/Lo and Modulating burners, the latter by an internally generated
0-10V signal.

2. Specifications

MC300 Multi
General

Electricity supply 230V 50Hz Fused at 6A.
Internal Fuses F1 20mm 6.3A 230V.(HRC), F2 20mm 500mA 230V. (Non replaceable)
Display 2 line 5mm L.C.D.
Day set point range 10 - 30°C.
Night set point range 1 - 15°C.
Temperature accuracy 0.5 °C.
Overall switching differential Adjustable 0.5 - 10.0°C for Hi/Lo burner types.
Sensing Element Internal or remotely mounted up to 100m from control.
Switching contacts ratings 12A. 230V.ac. (resistive). All Volt Free
Modulating Control 0-10V dc
Heating ON Indicator Green L.E.D. when the heater is a single-stage burner, Red when the burner is a

Hi-Low type, and Yellow when the burner is a Modulating type.

Fault (Lockout) Indicator Orange L.E.D.
Protection Rating IP20

Clock

- The unit date range is from 01/01/2001 to 31/12/2099

- Leap years are recognised

- BST begins on the last Sunday in March and ends on the last Sunday in October. The time changes at 01:00 GMT.

- The clock may gain or lose up to 10 minutes in a year.

Time Switch

- 14 timers are provided in the software, and each can be assigned to any single day of the week, or to day groupings such as
weekdays or weekends. This allows greatest flexibility in operating the heating whenever required.

- It is possible to schedule timers so that one starts before another has finished. The heating will be on while any timer is
requiring Heat On, and the heating will turn off only when all timers have reached Heat Off. The requested temperature will
be set by the most recent timer to switch On. When an overlapping timer switches Off, the requested temperature will be set
by the remaining timer(s).

- No timer can be programmed to run past midnight, because it is assigned to a day of the week. If timed heating is required
across midnight, it must be provided by two timers, one ending at 23:59 and the other starting at 00:00. At midnight, all manual
over-rides and extensions are cleared.

Optimum Start

- The MC300 multi achieves Optimum start by keeping a moving record of how many minutes it takes to increase the
temperature per degree in each 3° band of temperature from 5°C to 20°C. The current overnight temperature is referenced and
the MC300 can estimate how many minutes are required to bring the temperature to the required level. When Optimum Start is
enabled the switch-on time for the heater is then advanced accordingly to achieve the required temperature by the Heat On
time i.e. the warmer the night time temperature the closer the switch on time will be to the Heat On time

Optimum Stop

- The MC300 Multi keeps a note of how many minutes are taken for the temperature to drop the number of degrees entered
against this parameter when the heating period ends. When Optimum Stop is enabled, the MC300 Multi switches off the
heating that number of minutes early.

1