Varmebaronen EP Series Instruction Manual

Installation and maintenance
The EP series
7 and 15 stage electric boilers
31 - 300 kW
EP31-300_180125_fw31-350_enGB

2VÄRMEBARONEN EP 31 300
Content
Safety and handling .....................................................4
Operation ......................................................................5
The menu, the standard ...............................................6
Menus - with outdoor temperature
compensation (UTK).....................................................7
Control panel ................................................................8
Start - first operation ...................................................9
Operating menu ............................................................10
Adjustment menu .........................................................10
Adjustment menu - boiler with UTK ............................11
Heating curve
Installation menu..........................................................12
Information on the menu .............................................14
General menu................................................................15
Operation and maintenance.........................................16
Power connection
Delayed power connection
Quick increase/reduction
Load guard
PEC function
Safety valve
Over temperature protection
Maintenance
Draining
Action in the event of a risk of freezing -frost protection
Venting - water pressure
Controlling power from the heat pump
Temperature guard - Check on Temperature guard
Pressures guard(s) -option
High pressure guard
Low pressure guard
Adjustment
Alarm - warning - information.....................................18
Red indicator flashing - Alarm
Yellow indicator flashing - warning
Green indicator flashing - information
Alarm - load-break switches and safety guards ........20
Pressures guard(s) -option
General..........................................................................22
Water quality
Flow requirement
Pipe installation............................................................23
Expansion system - Safety pipe
Open system
Closed system ≤300 kW and < 105°C
Electrical installation ...................................................24
Power limiting
External control voltage
Power supply
Power supply to external unit
Circulation pump
External alarm indication
Pressure guards - Safety equipment
Low pressure guard
High pressure guard
Low and high pressure guard
Load guard
Secondary measurement
Direct measurement
External blocking
External stage control — 0-10 V, 0-5 V or 4-20 mA
External setpoint — 0-10 V, 0-5 V or 4-20 mA
0-10 V output signal of connected power
0-10 V output signal of boiler temperature
Outdoor temperature sensor - boiler with UTK
Alternative heating - boiler with UTK
Controlling power from the heat pump
Control circuit...............................................................28
Electric circuit ..............................................................30
Data...............................................................................34
Troubleshooting............................................................38
Irregular control
Tables for temperature sensors
Components..................................................................39

General information
3
VÄRMEBARONEN EP 31 300
Notes
Serial number Date of installation
Plumber
Tel
Electrician
Tel
Other,
Filled in when the boiler is installed!
External temperature setpoint no 0-10 V 0-5 V 4-20 mA
External stage limit no 0-10 V 0-5 V 4-20 mA
Max. limit
°C
Min. limit
°C
Settings
Installed power kW Number of stages
Load guard
yes no
Main fuse
A
Primary transformer
(xxxx/5)
Current limit
A
Margin
A
7 stage, EP 31 42 52 63 70 84 98 119
Art.no. 5601 5602 5603 5604 5605 5606 5607 5608
15 stage, EP 67 90 99 112 135 150 180 225 255 270 300
Art.no. 5609 5610 5611 5612 5613 5614 5615 5616 5617 5618 5619
UTK - heating curve
P1
Toutside = 20°C °C
P7
Toutside = -10°C °C
P2
Toutside = 15°C °C
P8
Toutside = -15°C °C
P3
Toutside = 10°C °C
P9
Toutside = -20°C °C
P4
Toutside = 5°C °C
P10
Toutside = -25°C °C
P5
Toutside = ±0°C °C
P11
Toutside = -30°C °C
P6
Toutside = -5°C °C
Temperature adjustment
°C

4VÄRMEBARONEN EP 31 300
• Read these instructions carefully before installation
and operation! Keep the instructions in the boiler.
• Check that the boiler has not been damaged
during transport. Report any transport damage
to the carrier.
• Check that the delivery is complete.
• All installation must be performed by an authorised
person in accordance with the existing regulations.
• Risk of electric shock. Never leave the boiler door
open!
• Never disable the safety equipment!
• The boiler must never be switched off electrically
unless the heating system is full and the boiler
vented.
• Correct installation in combination with correct
adjustment and continuous service will produce
high operational reliability and good heating
economy.
• The boiler must not be modified, changed or con-
verted in any way.
• Only authorised persons may work on the boiler.
• Disconnect the boiler from the power supply and
lock the switches before service/repairs.
• Never carry out maintenance work/service on
pressure-bearing parts when they are pressurised.
• The boiler may not be used by children or people
with physical or mental impairments. Nor by chil-
dren/people who lack knowledge about the boiler.
Children may not play with the boiler and connect
accessories.
• Always contact your installation engineer for
service.
• The type and production number of the boiler
must always be specified when contacting
Värmebaronen. See the boiler's rating plate.
• Värmebaronen AB reserves the right to change
the specification, in accordance with its policy
of continuous improvement and development,
without prior notice.
• Subject to amendments and printing and proof-
reading errors.
Illustrations may differ from the actual product.
The following icons are used in these instructions
to indicate important information:
Information that is important for optimum
operation.
Tells you what you should or should not do to
avoid personal injury.
Tells you what you should or should not do to
avoid a component, the boiler, a process or the
environment being damaged or destroyed.
Electrical hazard!
Safety and handling

General information
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.

6VÄRMEBARONEN EP31 300
The menu, the standard
When the power is switched on for the boiler's electronics,
window A is displayed.
If is pressed when the arrows in the bottom line move in
towards the centre, window B will be displayed. If is not
affected, Operating menu C is opened, which displays the
boiler temperature, connected power and temperature set
point.
An index arrow to the left on the line indicates that it contains
information that can be changed.
/ moves the index arrow between the lines.
selects the current line.
Change the content with / .
Leave the line with .
D
D
G
F
Menu selector
Adjustment menu
Installation menu
Information on the menu
Operating menu
C
A
B
E
Į-to ADJUSTMENT MENU!
-to INSTALL MENU!
-to INFOM MENU!
--------------------
-to MAIN MENU!
RUNTIME 0h
Peak BOILERTEMP XX°C
Peak PCB-TEMP XX°C
Actual PEC 000
Peak PEC 000
Actual CURRENT 0.00A
TOT LOW FLOW 0
Į-to MENU SELECTOR!
---- îîîîîîîî ----
ĮTIME BLOCK DISABLED
PEC MAX limit 200
O-TEMP function Rel
O-TEMP level +10°C
--------------------
---- ïïïïïïïï ----
ĮCURRENT LIMIT 1.00A
CURRENT MARGIN 0.10A
Max PWR ( 7) xxx.xkW
POWER SPEED STEP
Ext PWR LIMIT NO
Ext SET TEMP NO
CP function NEVER
---- ïïïïïïïï ----
---- îîîîîîîî ----
ĮSINGLE
--------------------
-to MENU SELECTOR!
ĮMAX TEMP SET 95°C
MIN TEMP SET 20°C
--------------------
RESET PEAK VALUE(OK)
--------------------
BOILER IN STANDBY? N
- to MENU SELECTOR!
VÄRMEBARONEN AB
EPxxx xxxV xxxx
Vx.xx
ENGLISH
>>>>>>>>>><<<<<<<<<< ĮENGLISH
************* (xxxx)
CONTRAST 20
BACKLIGHT 150
FACTORY SETTINGS
SPECIAL MENU ????
----- EXIT! ------
SINGLE
CP� VENT�
BOILER TEMP. XX°C
PWR. OUTPUT XXX.XkW
ĮTEMP. SETPOINT 70°C
-to MENU SELECTOR!
To Operating menu
A screen with the Menu selector, D is opened by moving to
the bottom line with and pressing there.
From this you can access the adjustment menu, installation
menu and information menu, or return to the operating menu.
The procedure is the same function in the other menus.
Displayed as follows:
Į ----- EXIT! ------ To the operating menu:
Į---- îîîîîîîî ---- To the previous window:
Į---- ïïïïïïïï ---- To the following window:
Į-to MENU SELECTOR! To the menu selector:

For the user
7
VÄRMEBARONEN EP 31 300
Menus - with outdoor temperature compensation (UTK)
Menu selector
Adjustment menu
Installation menu
Information on the menu
Operating menu
C
D
G
A
F
E
B
ĮMAX TEMP SET 95°C
MIN TEMP SET 20°C
--------------------
RESET PEAK VALUE(OK)
ECO TEMP, Tout 17°C
BOILER IN STANDBY? N
---- ïïïïïïïï ----
---- îîîîîîîî ----
Į P1, Tout= 20: 20°C
P2, Tout= 15: 27°C
P3, Tout= 10: 33°C
P4, Tout= 5: 40°C
P5, Tout= 0: 45°C
P6, Tout: -5: 49°C
---- ïïïïïïïï ----
---- îîîîîîîî ----
Į P7, Tout=-10: 53°C
P8, Tout=-15: 57°C
P9, Tout=-20: 60°C
P10, Tout=-25: 62°C
P11, Tout=-30: 63°C
TEMP.ADJUST : 0°C
-to MENU SELECTOR!
RUNTIME 0h
Peak BOILERTEMP XX°C
Peak PCB-TEMP XX°C
Actual PEC 000
Peak PEC 000
Actual CURRENT 0.00A
TOT LOW FLOW 0
Į-to MENU SELECTOR!
VÄRMEBARONEN AB
EPxxx xxxV xxxx
Vx.xx (AUT)
ENGLISH
>>>>>>>>>><<<<<<<<<< ĮENGLISH
************* (xxxx)
CONTRAST 20
BACKLIGHT 150
FACTORY SETTINGS
SPECIAL MENU ????
STB-test?
----- EXIT! ------
SINGLE Tute +XX°C
CP� VENT�
BOILER TEMP. XX°C
PWR. OUTPUT XXX.XkW
TEMP. SETPOINT 70°C
Į -to MENU SELECTOR! Į-to ADJUSTMENT MENU!
-to INSTALL MENU!
-to INFOM MENU!
--------------------
-to MAIN MENU!
---- îîîîîîîî ----
ĮTIME BLOCK DISABLED
PEC MAX limit 200
O-TEMP function Rel
O-TEMP level +10°C
Ext TEMP.ADJ NO
---- ïïïïïïïï ----
ĮCURRENT LIMIT 1.00A
CURRENT MARGIN 0.10A
Max PWR ( 7) xxx.xkW
POWER SPEED STEP
Ext PWR LIMIT NO
Ext SET TEMP NO
CP function NEVER
---- ïïïïïïïï ----
---- îîîîîîîî ----
ĮSINGLE
--------------------
-to MENU SELECTOR!
To Operating menu

8VÄRMEBARONEN EP31 300
red indicator
Off: normal.
Flashing: serious fault.
The display shows the cause when is pressed.
yellow indicator
Off: normal.
Flashing: warning.
The display shows the cause when is pressed.
green indicator
On: normal.
Flashing: something is preventing power increase/
decrease.
The display shows the cause when is pressed.
STOP Breaks the power supply to the boiler by tripping the
boiler's load-break switch.
The voltage to the control circuit is not broken.
Control panel
moves the index arrow upwards, between the lines
containing parameters that can be changed.
Set/change the content with the UP/DOWN arrow.
Parameters with a large setting range have a fast move
function when the button has been pressed for a while.
moves the index arrow downwards between the lines
containing parameters that can be changed.
Set/change the content with the UP/DOWN arrow.
Parameters with a large setting range have a fast move
function when the button has been pressed for a while.
Press the RIGHT arrow to select the highlighted line.
Set/change the content with the UP/DOWN arrow.
-
Confirms a change and jumps back to the current menu.
Changes made take immediate effect when you press OK.
DisplayShows status, alarms etc. The display returns to the
Operating menu a minute after any button has been pressed.
ManometerShows the water pressure in the boiler/heating
system.
Operation and maintenance
STOP
VÄRMEBARONEN AB
E P X X X-....-....
VERS X.XX
(SVENSKA)
>>>>>>>>>> <<<<<<<<<<
STOP
VÄRMEBARONEN AB
E P X X X-....-....
VERS X.XX
(SVENSKA)
>>>>>>>>>> <<<<<<<<<<

For the user
9
VÄRMEBARONEN EP 31 300
Before the boiler can be started, all the conditions for
operation must be met. Check:
• Power cables' connections; tighten them.
• That the boiler and heating system are full of water
and vented and that the air vents are open so that they
can let air out.
• That all necessary valves are open.
• That the circulation pump is working and the flow
direction is correct.
• That any safety valves are working.
• That no tools or similar have been left behind the
busbar system.
• That safety equipment is working as intended.
Start - first operation
Power the operating circuit and set the boiler load-break
switch to ”I”. Follow the information, displayed in the window.
BOILER TEMP. 0°C
SWITCH IN 0-POSITION
OR TRIPPED!
SET SWITCH IN ON-
POSITION
VÄRMEBARONEN AB
EPxxx xxxV xxxx
Vx.xx
ENGLISH
>>>>>>>>>><<<<<<<<<<
The operating menu is then displayed. The information i this
menu varies slightly depending on whether the boiler has an
option.
SINGLE Tute +XX°C
CP� VENT�
BOILER TEMP. XX°C
PWR. OUTPUT XXX.XkW
ĮTEMP. SETPOINT 70°C
-to MENU SELECTOR!
If the bottom line of the window switches between:
Į-to MENU SELECTOR!
and
PRESS OK FOR INFO!
the cause is displayed when is held down. See 'Alarm -
warning - information'.
When the boiler is first operated, the following parameters
must be checked/adjusted. More information is available
under 'Menus'.
Note the settings in 'Notes'
Installation menu
Load guard
ĮCURRENT LIMIT 1.00A
ĮCURRENT MARGIN 0.10A
Power limiting
ĮMax PWR ( 7) 63.0kW
Permitted power, number of power stages.
External stage limit
ĮExt PWR LIMIT NO
Potential-free blocking, 0-5V, 0-10V or 4-20 mA.
See also “Controlling power from the heat pump”
External temperature setpoint
ĮExt SET TEMP NO
0-5V, 0-10V or 4-20 mA.
Circulation pump
ĮCP function NEVER
Operating alternatives for the circulation pump)
Delayed connection after power cut
ĮTIME BLOCK DISABLED
Over temperature
ĮO-TEMP function Rel
ĮO-TEMP level +10°C
Adjustment menu
Max. and min. temperatures
ĮMAX TEMP SET 95°C
ĮMIN TEMP SETT 20°C
Operating menu
Boiler temperature
ĮTEMP. SETPOINT 70°C
Pressure guards
If the boiler was supplied with safety equipment, see “Operation
and maintenance”.
Operation and maintenance

10 VÄRMEBARONEN EP 31 300
Operating menu, Adjustment menu
Operating menu
SINGLE Tute +XX°C
CP� VENT�
BOILER TEMP. XX°C
PWR. OUTPUT XXX.XkW
ĮTEMP. SETPOINT 70°C
-to MENU SELECTOR!
SINGEL
“SINGLE”, information, changes with series operation, option.
CP� VENT�
CP�: pump in operation.
CP : flashing, pump paused.
See 'CP function' in the installation menu.
VENT�: cooling fan in operation.
VENT : cooling fan paused.
BOILER TEMP. XX°C
Information, current boiler temperature
PWR. OUTPUT XXX.XkW
Information, current connected power.
ĮTEMP. SETPOINT 70°C
Setting, desired boiler temperature, 20-95°C, setpoint.
The setting range is affected by max. and min. limits.
Adjustment menu
ĮMAX TEMP SET 95°C
MIN TEMP SET 20°C
--------------------
RESET PEAK VALUE(OK)
--------------------
BOILER IN STANDBY? N
-to MENU SELECTOR!
ĮMAX TEMP SET 95°C
ĮMIN TEMP SET 20°C
Max. and min. limits of the range for setting the boiler's
temperature setpoint.
Max. limit: 55-105°C.
Min. limit: 20-50°C.
ĮRESET PEAK VALUE(OK)
Resetting all the high values in the information menu.
ĮBOILER IN STANDBY? N
Set boiler in standby position (switched off).

Menus
11
VÄRMEBARONEN EP 31 300
Adjustment menu - with outdoor temperature compensation (UTK)
Adjustment menu - boiler with UTK - Window one
ĮMAX TEMP SET 95°C
MIN TEMP SET 20°C
RESET PEAK VALUE(OK)
ECO TEMP, Tout 17°C
BOILER IN STANDBY? N
---- ïïïïïïïï ----
ĮMAX TEMP SET 95°C
ĮMIN TEMP SET 20°C
Setting range for temperature setpoint.
Max. limit: 50-105°C.
Min. limit: 20-45°C.
ĮRESET PEAK VALUE(OK)
Resetting the values in the information menu.
ĮECO TEMP(Tout) +17°C
Lowest temperature at which no heating is required. All boiler
power disconnected, the circulation pump is stopped.
Alternative ĮCP function ECO in the Instal-
lation menu muts be selected for the ECO-function top
be active and for temperature setting to be carried out
ĮBOILER IN STANDBY? N
Set boiler in standby position (switched off).
Window two
---- îîîîîîîî ----
Į P1, Tout= 20: 20°C
P2, Tout= 15: 27°C
P3, Tout= 10: 33°C
P4, Tout= 5: 40°C
P5, Tout= 0: 45°C
P6, Tout= -5: 49°C
---- ïïïïïïïï ----
Setpoint at outdoor
temperature:
20°C
→
15°C
→
10°C
→
5°C
→
0°C
→
-5°C
→
Window three
---- îîîîîîîî ----
Į P7, Tout=-10: 53°C
P8, Tout=-15: 57°C
P9, Tout=-20: 60°C
P10, Tout=-25: 62°C
P11, Tout=-30: 63°C
TEMP.ADJUST : 0°C
-to MENU SELECTOR!
Setpoint at outdoor
temperature:
-10°C
→
-15°C
→
-20°C
→
-25°C
→
-30°C
→
ĮTEMP.ADJUST : 0°C
Alternative temperature, against normal temperature,
+/- adjustment of setpoint, parallel displacement.
The change is affected by a contact function connected
to terminal block J2, see point 32 “Control circuit”
Heating curve
P1 P2 P3 P4 P5 P6 P7 P8 P9 P10 P11
+20 +15 +10 [phone]
70
60
50
40
30
20
80
Framledningstemperatur
Utomhustemperatur
Each setpoint, P1-P11, is adjustable over the range 20-80°C
Outdoor temperature
Flow temperature

12 VÄRMEBARONEN EP 31 300
Window one
ĮMAIN FUSE xxxA
STEP SIZE xx.xA
Max PWR ( 7) 90.0kW
POWER SPEED STEP
Ext PWR LIMIT NO
Ext SET TEMP NO
CP function NEVER
---- ïïïïïïïï ----
ĮCURRENT LIMIT x.xxA
CURRENT MARGIN x.xxA
Max PWR (15) xx.xkW
POWER SPEED STEP
Ext PWR LIMIT NO
Ext SET TEMP NO
CP function NEVER
---- ïïïïïïïï ----
The two upper lines of the window vary with the load guard’s
measurement method.
Load guard with secondary measurement:
ĮCURRENT LIMIT 1.00A
ĮCURRENT MARGIN 0.10A
Setting values are calculated, for example:
Main fuse: 160 A
Current transformer: 200/5
Boiler, EP 90: 6 kW/stage/8,7 A. See “Technical data”.
Current transformer's conversion ratio:
200
5= 40
Current limit
size of main fuse
current transformer's conversion ratio =160 A
40 = 4
Margin
size of power stage in amperes
current transformer's conversion ratio =8.7 A
40 = 0.22
Load guard with direct measurement
ĮMAIN FUSE xxxA
Main fuse: size of the fuse, that must be protected
50 - 63 - 80 - 100 - 125 - 160 - 200A
STEP SIZE xx.xA
The amount of each power stage: defined in the boiler model,
cannot be changed.
ĮMax PWR ( 7) xx.xkW 7-stage boiler
ĮMax PWR (15) xx.xkW 15-stage boiler
Number of stages, power, the boiler will work with. The number
of stages selected is shown in brackets. See stage size in
“Technical information”.
ĮPOWER SPEED STEP...
Quick increase/reduction of power in connection with checks
and acceleration of the delay when it is active. If the delay is
active, the display shows
ĮSPEEDING TIME BLOCK!
Release the button and press it again if you want quick
increase/decrease.
ĮExt PWR LIMIT NO
Stage limit with external signal, 0-100% of selected power,
“Max. POWER”.
NO: internal limit.
0-5V: limit with 0-5 V.
0-10V: limit with 0-10 V or potential-free blocking. This
alternative is selected if the function ”Power control
from the heat pump” is used.
4-20mA: limit with 4-20 mA.
ĮExt SET TEMP NO
Temperature setpoint via external signal.
NO: internal setpoint.
0-5V: nominal value with 0-5 V (0-170°C).
0-10V: nominal value with 0-10 V (0-170°C).
4-20mA: nominal value with 4-20 mA (0-170°C).
ĮCP function NEVER
Operating method for circulation pump supplied with power
by the boiler:
NEVER: no pump operation/pump switched off
AUTO: The pump starts before power is connected and
stops one minute after all power has stepped out.
If the pump is not in operation, it is run once daily.
In the event of over temperature, the pump starts
and is in operation until the over temperature
situation ends, even if all power is disconnected.
ALWAYS: Pump always in operation.
ECO: Only with UTK, option.
Pump stop with maintenance operation, when the
outdoor temperature meets the set temperature
according to ĮECO TEMP, Tout 17°C in
the Adjustment menu.
Installation menu

Menus
13
VÄRMEBARONEN EP 31 300
Window two
---- îîîîîîîî ----
ĮTIME BLOCK DISABLED
PEC MAX LIMIT: 200
O-TEMP function: Rel
O-TEMP level: +10°C
--------------------
---- ïïïïïïïï ----
---- îîîîîîîî ----
ĮTIME BLOCK DISABLED
PEC MAX limit 200
O-TEMP function Rel
O-TEMP level +10°C
Ext TEMP. ADJ. NO
---- ïïïïïïïï ----
ĮTIME BLOCK DISABLED
Limits power connection after a power cut which has lasted
longer than three minutes. See 'Delayed power connection'
under 'Operation and maintenance', options:
Disabled: no function.
Enabled: delayed power connection.
ĮPEC MAX limit 200
Limit value, 0-500 quality factor, for PEC function alarm.
ĮO-TEMP function Rel
ĮO-TEMP level +10°C
Over temperature function:
Rel: over temperature, 5-15°C, relative to setpoint.
Abs: absolute value for over temperature , 105-106°C,
Temperature level for the over temperature function, range:
5 - 15°C when relative setpoint is selected.
35 - 105°C at absolute temperature.
with UTK ĮExt TEMP. ADJ. NO
Will the function be used with closing or open contact,
alternative: No
J2→O Open
J2→C Closed
Installation menu
Window three
Į ---- îîîîîîîî ----
SINGLE
--------------------
- to MENU SELECTOR!
ĮSINGEL
Information, changes with series operation, option.

14 VÄRMEBARONEN EP 31 300
Information on the menu
RUNTIME 0h
Peak BOILERTEMP XX°C
Peak PCB-TEMP XX°C
Actual PEC 000
Peak PEC 000
Actual CURRENT 0.00A
TOT LOW FLOW 0
Į - to MENU SELECTOR!
RUNTIME 0h
The time in hours for which the electronics were powered.
Peak BOILERTEMP XX°C
The highest boiler temperature since the electronics were
last switched on.
Peak PCB-TEMP XX°C
The highest temperature of the relay circuit board since the
electronics were last switched on.
Actual PEC 000
Peak PEC 000
Result of leakage current measurement The value, 1-500,
is a quality factor, i.e. the lower the value the better.
Actual CURRENT 0.00A
Requires that the load guard current transformer is installed.
During direct supply the current of the highest load phase is
shown.
During secondary measurement, the current measured by
the secondary current transformer, 1-5 A, is displayed.
The actual current value is obtained by multiplying the read
off value by the primary transformer’s conversion ratio.
TOT LOW FLOW 0
Number of low flow detections. If the boiler temperature
changes in an undesired way, the control detects this and
takes action to prevent unnecessary contactor operations
and to reduce the risk of the boiler’s temperature guard being
tripped. Check the flow through the boiler!

Menus
15
VÄRMEBARONEN EP 31 300
This menu is only available on start after the electronics have
been without power.
Press when this screen is shown, while the arrows in the
bottom row disappear towards the centre.
VÄRMEBARONEN AB
EPxx xxxV (xxxx)
vx.xx
ENGLISH
>>>>>>>>>><<<<<<<<<<
This window will then be displayed:
ĮENGLISH
************* (xxxx)
CONTRAST 20
BACKLIGHT 150
FACTORY SETTINGS
SPECIAL MENU ????
STB-test?
----- EXIT! ------
ĮENGLISH
Language selection.
************* (xxxx)
Information to manufacturer.
ĮCONTRAST 5
Adjusting window contrast.
ĮBACKLIGHT 200
Adjustment of the backlighting of the window.
ĮFACTORY SETTINGS
Reset to factory setting.
YES = OK ; NO = OTHER BUTTON
ĮSPECIAL MENU ????
Manufacturer settings.
STB-test?
Only boiler with UTK function. Used to control the boiler’s
temperature guards.
General menu

16 VÄRMEBARONEN EP31 300
Operation and maintenance
Power connection
The boiler uses binary power increase. By connecting and
disconnecting the three or four power groups, seven or
fifteen stages are obtained. Only fifteen-stage boilers have
power group four. The working method is shown in the table.
Delayed power connection
Power connection can be time restricted after a power cut,
that was longer than three minutes. When the delay is active,
the green indicator on the control panel flashes. Information
may be displayed in the display. The delay can be temporarily
disabled. See the Installation menu.
When the boiler is restarted after a power cut, if necessary
1/3 of the power is connected immediately, 1/3 after
20 minutes and the remainder 40 minutes after the power
has returned.
Quick increase/reduction
For quick increase/reduction, see the Installation menu.
Increase/reduction can be limited by temperature, load guard
or the permitted number of power stages.
Load guard
The load guard protects the main fuses against overload
by reducing the boiler's power. When the overload ceases,
the power is reconnected.
PEC function
The boiler has earth fault measurement, PEC, which indicates
any fault in the immersion heaters at an early stage. This
function can be used to remedy any fault without unplanned
stoppages. The break value for the PEC function can be set.
Safety valves
To maintain the safety function, the heating system's safety
valves must be operated regularly.
Over temperature protection
To supplement the temperature guard, the control electronics
has over-temperature protection. The aim of this is to prevent
the temperature guard from being tripped where possible.
The protection disconnects all power in the event of a tem-
porary temperature increase that may occur as a result of
reduced flow following a pump stoppage, for example.
Maintenance
After 500 hours of operation, the cable connec-
tions must be tightened with a torque wrench.
Check the power cables' connections every 2 years.
The control voltage is not broken by the load-
break switch. External voltage may occur.
Draining
Always cut the power to the boiler and lock the
switch before the water is drained!
The version of the switch is dependent on the model of boiler
Action in the event of a risk of freezing - frost protection
When it is extremely cold, no part of the heating system must
be switched off as there is a risk of bursting.
If you suspect that any part of the heating system is frozen,
contact an installation engineer.
The boiler must not be in operation if you suspect
that any part of the heating system is frozen.
Call an installation engineer.
If the heating system must be switched off for long periods
the system should be drained, or the heating system water
can be mixed with maximum 30% glycol. When using a glycol
mixture the boiler power is reduced, or the through flow in
the boiler can be increased.
If the heating system's water is mixed with glycol, it is im-
portant to check that the glycol contains a suitable quantity
of corrosion-protection additive. When glycol breaks down,
one of the by-products is carbonic acid, which increases
the risk of corrosion.

For the user
17
VÄRMEBARONEN EP 31 300
Operation and maintenance
Venting - water pressure
Regularly check that the water pressure is correct. Air may
be left in the system for a while after installation, for which
reason it should be vented a few more times.
The pressure in a heating system varies with the
temperature. Do not add water unnecessarily.
Controlling power from the heat pump
If the function is used, ”Ext STAGE LIMIT” in the installa-
tion menu must be set for 0-10V!
Electric boilers with power from 31 to 119 kW are supplied
with a function, that permits a heat pump with three bit binary
230V~ output to control the boiler’s power connection. Three
bit binary gives seven power combinations , which means that a
fifteen stage boiler will increase by two stages at each change.
The temperature setpoint of the boiler is set to
the highest permitted temperature in the system!
The electric boiler can be disconnected from the heat pump
control, using a switch see ”Control circuit” point 14, in position:
EP: the boiler is controlled by its own temperature control.
VP: the electric boiler is controlled by the heat pump.
Check on temperature guards
Stop the flow through the boiler.
Adjust the break temperature to 80°C, on the back of the
temperature guard.
°C
80
90
100
110
Standard boiler:
Set boiler temperature set point to 90°C.
When the boiler temperature reaches the break temperature,
the temperature guards should be triggered together with the
load break switch.
Boiler with UTK:
Press the STOP button so that the load break switch trips.
Reset the load break switch so that this window is displayed:
VÄRMEBARONEN AB
EPxxx xxxV xxxx
Vx.xx
(ENGLISH)
>>>>>>>>>><<<<<<<<<<
Press when the arrows on the bottom row point towards
the middle, so that this window is displayed:
ĮENGLISH
************* (xxxx)
CONTRAST 20
BACKLIGHT 150
FACTORY SETTINGS
SPECIAL MENU ????
STB-test?
----- EXIT! ------
Activate the function by selecting:
STB-test?
This window will then be displayed:
SINGLE Tute +XX°C
CP� VENT�
BOILER TEMP. XX°C
PWR. OUTPUT XXX.XkW
ĮTEMP. SETPOINT 70°C
--------------------
STB-TEST! STB-TEST!
When the boiler temperature reaches the break temperature,
the temperature guards should be triggered together with the
load break switch.
Do not forget to readjust the temperature guards break tem-
perature to 105°C when inspection is finished.
The break temperature must not be set lower than the
boiler temperature control’s highest temperature!
Pressure guard(s) - option
High pressure guard: Set so that the trigger pressure is be-
tween the boiler’s normal operating pressure and the safety
valves’ opening pressure.
Low pressure guard: Set so that the trigger pressure is
slightly below the system pressure when the system is not
heated.
Adjustment
Xs Xs Xs

18 VÄRMEBARONEN EP31 300
At the same time as one of the indicators, red, yellow or
green, is flashing, the bottom line of the window alternates
between:
Į-to MENU SELECTOR!
and
PRESS OK FOR INFO!
When is held down, the cause of the flashing indicator is
shown.
Red indicator flashing - Alarm
Buzzer alarm via output pt 25 in ”Control circuit”.
Requires action and manual reset.
R1 TEMPsensor! J1
Cause: Short-circuit, interruption or not connected.
Pt100 boiler temperature sensor (option) J1, point 31 in
”Control circuit!”.
Remedy: Check, replace.
R2 TEMPsensor! J2
Cause: Short-circuit, interruption or not connected.
Pt100 temperature sensor (option) J2, point 32 in ”Control
circuit”.
Remedy: Check, replace.
R3 TEMPsensor! J12
Cause: Short-circuit, interruption or not connected.
Boiler temperature sensor J12, point 27 in ”Control circuit”.
Remedy: Check, replace.
R4 TEMPsensor! J14*J9/3
Cause: Short-circuit, interruption or not connected.
Temperature sensor, J14+J9/3, option, in secondary circuit
at secondary control, point 29 in ”Control circuit”.
Remedy: Check, replace.
R5 TEMPsensor! J13
Cause: Short-circuit, interruption or not connected.
Temperature sensor cooling fan, option, J13, point 28 in
”Control circuit”.
Remedy: Check, replace.
Alarm - warning - information
R6 TEMPsensor! J3
Included only in boiler with outdoor temperature compensator.
Cause: Short-circuit, interruption or not connected.
Outdoor temperature sensor, J3, point 35 in ”Control circuit”.
Remedy: Check, replace.
R7 TEMP SENS MAINBOARD!
Cause: Short-circuit or interruption.
Temperature sensor on power circuit board.
Remedy: Check, replace power circuit board
R8 TEMP SENS PANEL!
Cause: Short-circuit or interruption.
Temperature sensor on panel circuit board.
Remedy: Check, replace panel circuit board
R9 HIGH PE-CURRENT,PEC!
Cause: The PEC value is higher than the break limit set:
Remedy: Check Current PEC value in the Operating menu
Highest PEC value, Information menu
PEC alarm limit in Installation menu.
If the current PEC value is higher than the alarm limit when
no power is connected, there is no fault in the boiler.
The alarm limit should then be raised approximately 50 above
the highest measured PEC value. The external earth fault
should be identified and remedied.
If the current PEC value is lower than the alarm limit, the fault
may be in the boiler. Check:
- Acknowledge the alarm by cutting the control voltage for
10 seconds.
- Increase boiler power while reading off the current earth
fault value.
- Check the insulation of each immersion heater in the power
group issuing the PEC alarm to find out which immersion
heater is faulty.
- If the boiler works normally when power is connected without
tripping a PEC alarm, the earth fault is external.
R10 HIGH TEMP,MAINBOARD!
Cause: High temperature of power circuit board.
Remedy: Check the cause. Highest permitted ambient
temperature is ≤30°C.

For the user
19
VÄRMEBARONEN EP 31 300
Alarm - warning - information
R11 HIGH TEMP,PANEL!
Cause: High temperature of panel circuit board
Remedy: Check the cause.
Highest permitted ambient temperature is ≤30°C.
R12 LOW WATERLEVEL,TANK!
Cause: Low water level in the boiler
Remedy: Check the reason, add water and vent the system.
Yellow indicator flashing - warning
Automatic reset when the cause has ceased.
Y1 PE-CURRENT! PEC
Cause: Increasing values in earth fault current, PEC.
Remedy: See R9, High earth current, PEC.
Y2 OVERTEMPERATURE!
Cause: The boiler temperature is higher than the boiler
temperature value.
Remedy: Check that the boiler has sufficient flow and that all
necessary valves are open.
Check the setting for over temperature.
Y3 WATER LEVEL!
Cause: Variations in the signal from the boiler's level sensor.
Remedy: Check the reason, add water and vent the system.
Y4. LOW FLOWRATE!
Cause: Function to prevent unnecessary contactor opera-
tions and reduce the risk of the temperature guard
tripping.
Remedy: Check the water flow through the boiler.
Green indicator flashing - information
Something is preventing power increase/decrease.
Automatic reset when the cause has ceased.
G1 TIME BLOCK!
Cause: Delayed power connection after restart after
power cut.
G2 LOAD MONITOR!
Cause: Load guard limits power increase/decrease.
G3 Ext ANALOG PWR LIM.!
Cause: The boiler's power increase/decrease is limited
by an external setpoint or stage limit.
G4. LIMITING SET TEMP!
Cause: The boiler temperature is restricted by min or
max limit.

20 VÄRMEBARONEN EP31 300
When a guard in the safety circuit is triggered, the
display shows which guard or guards has/have been
triggered.
The boiler's load-break switches are always triggered
when a guard is triggered.
A buzzer alarm is issued from the boiler and a red
indicator flashes on the boiler's panel.
Always check the cause of a guard being trig-
gered! If the guards are triggered repeatedly,
the cause must be remedied!
Reset must take place in the order displayed in the window!
Depending on the cause, the following may be displayed:
BOILER TEMP 0°C
SWITCH IN 0-POSITION
OR TRIPPED!
SET SWITCH IN ON-
POSITION!
BOILER TEMP 70°C
SWITCH & TEMP.GUARD
TRIPPED!
RESET: 1/TEMP.GUARD
2/SWITCH
The following windows can be displayed if the boiler has
additional pressure guard(s).
BOILER TEMP 70°C
SWITCH & TEMP.GUARD
& H-PRESSURE GUARD
TRIPPED!
RESET: 1/TEMP.GUARD
2/H-PRESS.
3/SWITCH
BOILER TEMP 70°C
BRYTARE & TEMP.GUARD
& L-TRYCKVAKT
TRIPPED!
RESET: 1/TEMP.GUARD
2/L-PRESS.
3/BRYTARE
BOILER TEMP 70°C
SWITCH &
H-PRESSURE GUARD
TRIPPED!
RESET: 1/H-PRESS.
2/SWITCH
BOILER TEMP 70°C
SWITCH &
L-PRESSURE GUARD
TRIPPED!
RESET: 1/L-PRESS.
2/SWITCH
BOILER TEMP 70°C
SWITCH
& H-PRESSURE GUARD
& L-PRESSURE GUARD
TRIPPED!
RESET: 1/H-PRESS.
2/L-PRESS.
3/SWITCH
BOILER TEMP 70°C
SWITCH & TEMP.GUARD
& H-PRESSURE GUARD &
L-PRESS. TRIPPED!
RESET: 1/TEMP.GUARD
2/L-PRESS.
3/H-PRESS.
4/SWITCH
Boiler shares safety equipment
In a system in which the boiler shares safety equipment
with other boilers in the system and this safety equipment
is triggered, only this window can be displayed.
BOILER TEMP 70°C
SWITCH IN 0-POSITION
OR TRIPPED!
SET SWITCH IN ON-
POSITION!
Alarm - load-break switches and safety guards