Varmeteknikk MB 35, Инструкция по установке, эксплуатации и обслуживанию

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Varmeteknikk AS August 2017 e-mail: post@varmeteknikk.no
7
Commissioning
Note! BEFORE SWITCHING ON THE BOILER CHECK THE FOLLOWING:
- Check that the water system is completely filled with water. To prevent heating element break
down make sure there is no air pockets in plant.
- Switch on circulating pump and check water flow and direction.
- Hydraulic expansion system has to be controlled. Min. pressure, 1bar.
- Check for correct supply voltage
Note! Before start up, retighten all electrical connections
.
This appliance is not intended for use by persons (including children) with reduced physical,
sensory or mental capabilities or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety.
Children should be supervised to ensure that they do not play with the appliance.
Start up
Switch on the boiler by using the ON/Off-switch on the front panel. Display will after a few seconds
show actual water temp., preset temp. in brackets. The line below shows connected power. Boiler
will now step by step increase power to obtain preset temperature.
The temperature is factory set at 80 °C, and step time is set to 40 sec. Unless corrections of preset
temperature or step time are required, no further adjustments are needed.
Note! If boiler is controlled by external signals, missing signal can prevent boiler from
running.
Temperature controller
The boiler is equipped with a 7-steps electronic temperature controller located in front of the boiler.
All settings can be done at the front. The controller has a proportional and integrating control and is
designed to maintain constant boiler temperature. Temperature range is from 5 - 95°C in steps by
1 °C. 3 relays control the power contactors which are connected in a binary order. This gives a high
degree of reliability
If a failure occurs, an alarm diode starts flashing. Type of failure will be shown in display and could
be:
Don’t switch on the boiler if there is a possibility that the water in boiler
is frozen.
frozen