G
e
ner
a
l i
n
fo
rm
at
io
n
5
VÄRMEBARONEN EP 31 300
Operation
EP31-300 Electric boilers for heating systems or industrial
processes. The series consists of nineteen different boilers
with power from 31 to 300 kW.
7 or 15 power stages
The boilers are control led using 7 or 15 powers stages and
can be limited down to one power stage.
When the boiler is used with a heat pump, it is an advantage
to have many stages as the boiler can initially supply low
power to act as a support heat source.
In a process, it may be more suitable to have fewer stages so
that the boiler immediately supplies high power.
In the standard version the boilers' control range is 20-95°C.
• The boiler meets the work environment authority regu-
lations AFS 2016:1. Pressure bearing devices.
• The boilers are available with factory-fitted safety
equipment and then meet the Swedish Work Environ-
ment Authority's regulation AFS 2002:1 section 17 on
periodic monitoring of boiler systems.
The boiler is then approved for installation without
emergency protection. The factory-fitted safety equip-
ment contains safety valve(s), high-pressure guard and
automatic vent valves.
• Double circulation pumps and flow guards are not
required. The boiler can cope with zero flow from
a safety perspective.
• A steam-collecting vessel is not required. The safety
valves are fitted directly on the boiler's safety pipe.
When used with, for example, a heat exchanger, the temper-
ature in the secondary circuit can control the boiler. This is
an option.
If more power is required, two boilers can be controlled in se-
ries. Series control is an accessory.
With or without outdoor temperature compensation.
The boilers are supplied with control to maintain a constant
boiler temperature. An outdoor temperature compensator is
available as an option for variable flow temperature.
Safety
The boilers have a load-break switch that is acted on via
shunt release by the boiler's temperature relay or by external
safety equipment.
Operational reliability
With the fault management and measurement of cover boilers,
which provides all, if the error to be able to faults in the
beginning of quickly without unplanned downtime.
Alarm indication
Alarms are indicated on the boiler's control panel.
Connection for external indication of a buzzer alarm, alternating
potential-free relay output.
Stainless immersion heaters
The immersion heaters are made of stainless steel.
Pump maintenance operation
Connection for a circulation pump with a pump maintenance
operation function.
External stage and power control
Connection for external blocking, 0-5 V, 0-10 V and 4-20 mA
control of power.
Alarm indication
Alarms are indicated on the front panel. The boilers also have
a connection for an external buzzer alarm.
External temperature setpoint
Connection for external setpoint in the form of 0-5 V, 0-10 V
and 4-20 mA signal.
Output signal for present power and temperature
0-10 V signals for the number of power stages connected and
boiler temperature.
Load guard
Protects the main fuses; secondary transformers are supplied
with the boiler.
Controlling power from the heat pump
Electric boilers with power from 31 to 119 kW are supplied
with a function, EPVP, that permits a heat pump with three bit
binary 230V~ output to control the boiler’s power connection.
Copper and aluminium
o facilitate installation, the boilers are fitted with terminals
that make it possible to connect both aluminium and copper
cables. No splicing from aluminium is required.
