15
MidiHeat EHD
MA45-33 GB translated from the original language of the instruction (SE)
ENGLISH
A
B
J4
RS485
J2
NC
NO
IN
J1
L1
K2
K1
L2/N
K4
K3
FUSE
FUSE
TRANSFORMER
J3
OVERHEA
T
CIRCULA
TION
PUMP
FLOW
SWITCH
TEMP
.SENSOR
{
{
{
{
Control
circuit board
www.pahlen.com
Kretskort MidiHeat summalarm
vid fel
normalt läge
IN
NO
NC
IN
Temperature adjustment
Midi Heat is factory set at 28°C upon delivery.
The electric heater remembers the last set of desired temperatures in the event of power failure.
Set/change the required temperature:
1. Press the standby button (A) on the panel.
2.
Set the desired pool temperature (°C) by pressing blue or red arrow. Red = temp. up, blue = temp. down.
3.
“Heating elements” diodes on the panel indicate that the cartridges are being switched. The cartridges are sequentially
activated with a delay. When the desired pool temperature is reached, the el. Cartridges are closed sequentially.
4.
Check the pool temperature for some time and adjust if necessary any temperature offset (may be due to energy losses in
the system), see “System Settings”.
Water/Bypass adjustment
Water flow can be adjusted using an external valve in by-pass connection.
Adjust bypass valve so that the flow through the electric heater is between 170–300 l/min. In order to prevent the unauthorized
handling, operational problems or damage to the electrical heater, it is recommended that the handle of the bypass valve is
removed after the adjustment is made.
At low flow in the pool circulation, the electric heater will break the warming and display error code E1. When the correct flow
has been achieved, the electrical heater restarts with a time delay of approximately 20 seconds.
Startup
Start
1. Check electric connections and piping. Turn on all external fuses and circuit breakers.
2.
Open all valves to and from MidiHeat (except drainage) and fill the system with water.
- If the pool water level is lower than the heater, fill the pool with the heater switched off.
- If the system has a bypass switch, open the by-pass valve halfway (make final adjustments later).
3.
Start the pump in order to fill the system with water
4.
When the system is filled with water and all air is gone, switch on the heater.
Alarm output
The electric heater has built-in alarm output J2. The relay
output is a potential-free changeover contact and is active at
fault codes and blackouts.
In the master/slave control system the alarm signal is picked
only from the master.
Maximum load: 8A at 250VAC
5A at 30VDC
at error
normal mode
