Kospel Optimus Series User manual

KOSPEL S.A. 75-136 KOSZALIN UL. OLCHOWA 1
Please, read and follow the installation and operating instructions carefully, to ensure the long life and reliable
operation of this appliance.
Kospel S.A. may make minor changes if necessary, in the appliance, that will not be shown in the operating
instruction, so long as the main features of the heater remain the same.

ENG-002B/p.278 3
You must not install this appli-
ance in places exposed to the
danger of explosion and places
in which the temperature may
go down below 0oC.
The EPJ Instantaneous Water Heater provides hot water in the domestic household, a public facility, a labora-
tory, a workshop, or virtually anywhere where there is a demand for instant hot water. Turning the hot water tap
on, automatically starts up the heater (a red light on the heater's outer case comes on). Water is heated instantly
as a result. The temperature of heated water depends on the rate of flow: the greater the flow, the lower the tem-
perature. Turning the hot water off, shuts the appliance.
The heater features:
- tubular heating coils that assure maximum safety
- materials resistant to corrosion and chemically inactive with water (copper, brass, stainless steel, plastic)
This appliance will work with
the attached tap set only.
The tap set works as an air vent
and therefore, cannot be con-
nected to any valve or a connec-
tor that is not recommended by
the manufacturer.
Description
Technical data EPJ electric instantaneous water heater 3,5 4,4 5,5
Rated power kW 3,5 4,4 5,5
Rated voltage 230V~
Rated current A 15,8 19,1 23,9
Min supply water pressure MPa 0,12
Operating point l/min 1,2 1,8 2,2
Efficiency (at Δt = 30°C) l/min 1,6 1,9 2,4
Overall dimension mm 214 x 218 x 95
Weight kg ~2,8 ~3,0
Fuse rated current A 16 20 25
The maximum allowed network impedance Ω0,34 0,31
Water supply pipe section G 1/2"
Safety class IP 24

4 Installation and operation instruction EPJ
All installation must be carried
out with the electricity and
water supplies cut off.
Recommendation
- connect the appliance to cold
water supplies only.
Installation - Assembly
1. Fix the tap set [19] on water sup-
ply pipe [15].
2. Undo the two screws [9] and take
the front case [27] off.
3. Drill through one of the two
1,5mm holes on the back case
[28] of the appliance with a
4,5mm drill.
4. Connect the heater to the tap
body [19] with nuts [26] with the
gasket [13] and the filter [12].
5. Mark a point for the pin [32] for
fixing the appliance through the
drilled hole.
6. Disconnect the heater from the
tap body.
7. Drill a hole of 35 depth and 6mm
diameter at the marked point.
8. Connect the tap body [19] using
nuts [26] with a gasket [13] and
the filter [12] to the heater.
9. Fix the heater on the wall (fixing
screw [30], sleeve [31], and pin
[32]).
10. Put the front case [27] on the
heater and secure with two
screws [9].
11. Allow water mains pressure get
to the tap.
12. Check for leaks by opening the
taps. Do it without the spray-
Picture 1 Viev
If there is no filter [12] the
appliance can be damaged.
1
[4] - flow regulating valve
[9] - screws for fixing the case
[12] - filter
[13] - gasket
[15] - water supply
[16] - rosette
[17] - extension
[19] - tap body
[23] - spray-head
[24] - heating on indicator
[26] - nuts
[27] - front case
[28] - back case
[29] - tap
[30] - fixing screw
[31] - sleeve
[32] - pin
Installation

ENG-002B/p.278 5
1. Shut off electric supplies (take the plug out of the socket).
2. Turn the flow on (turn the hot water tap on) in order to vent the water installation (for about 15-30 seconds),
until the flow of water becomes constant and even.
3. Shut off the flow.
4. Switch on the electric supplies.
Do it each time after a decay
of water.
If venting is not performed, the
heater may be damaged.
By the term "flow regulation" we mean the setting of the water temperature
to a comfortable level, by means of limiting/opening the rate of flow.
For this purpose carry out the following steps:
- set the hot water tap at maximum flow,
- insert the spanner or a screw driver [25] into the regulation valve [4],
- set optimum flow(check if the temperature is comfortable for you) using
the spanner [25],
- close water flow using the tap,
- take the spanner [25] out of the regulation valve [4].
Picture 3 Regulation
[4] - regulating valve
[19] - tap set
[25] - regulating spanner
3
head on [23]. Some impurities which come from the installation may
appear.
13. Vent the water installation.
14. Put the spray-head on.
15. Plug the heater (EPJ-3,5 plug to an earthed socket, EPJ-4,4 and EPJ-5,5
connect to mains through a cable box according to diagram 2.
The water heater has to be earthed or neutrally grounded
This appliance should be installed and the reliability of electric shock protection should be tested by
a professional person.
Diagram 2 Electric connection
EPJ-4,4 end EPJ-5,5
F - dipolar circuit breaker
L - live wire
N - neutral wire
PE - earth wire
BN - brown
BU - blue
GNYE - green-yellow
2
Venting
Flow regulation

6 Installation and operation instruction EPJ
Chart 4 Characteristics
To ensure the long and faultless work of this appliance, you should clean the filter [12] from time to time. To
clean it do the following (picture 5):
1. Cut off water and electric supplies.
2. Disconnect the heater from the tap set - look at Installation.
3. Take the filter out [12] from the fittings at cold water inlet.
4. Clean the filter [12].
5. Install the filter [12] in the former position.
6. Fix the heater on the tap set.
7. Open cold water pipe on water supply - check connections for leaks.
8. Vent the installation.
The filter should be cleaned
after you repair the water sys-
tem, if a lot of effluent appears
or after a year of operation.
Picture 5 Filter cleaning
[6] - inlet - cold water
[12] - filter
[19] - tap set
5
This heater has a differential pressu-
re switch that starts heating automati-
cally when there is a proper rate of
flow through the tap. There is a red
indicator light on the front case that
shows that heating is on.
The characteristics shows the de-
pendence between temperature rise
and flow rate per minute. The greater
the flow rate the lower the temperatu-
re of the water.
4
Operation
Maintenance

ENG-002B/p.278 7
Picture 6 EPJ - 3,5 construction of
the appliance
[1] - Heating box
[2] - differential pressure switch
[3] - safety temperature limiter
[4] - regulating valve
[6] - inlet - cold water
[7] - outlet - hot water
[24] - "heat on" indicator
See general construction of EPJ-
3,5 in the diagram No. 6 and the
construction of EPJ-4,4/5,5 in the
diagram No. 8.
Safety temperature limiter [3] pro-
tects against overheating. After the
limiter goes off, you can turn the
hot water tap on but heating will
not start.
Resetting the safety temperature
limiter should be performed by au-
thorised service personnel.
Picture 7 EPJ - 3,5 wiring diagram
E1 - heating box [1]
BV1 - differential pressure switch [2]
F1 - safety temperature limiter [3]
X1 - mains, cord with a plug [8]
H1 - "heat on" indicator [24]
6
7
Construction

8 Installation and operation instruction EPJ
Picture 8 EPJ - 4,4; EPJ - 5,5 construc-
tion of the appliance
[1] - Heating box
[2] - differential pressure switch
[3] - safety temperature limiter
[4] - regulating valve
[6] - inlet - cold water
[7] - outlet - hot water
[24] - "heat on" indicator
8
Picture 9 EPJ - 4,4; EPJ - 5,5 wiring
diagram
E1 - heating box [1]
BV1 - differential pressure switch [2]
F1 - safety temperature limiter [3]
X1 - mains, cord with a plug [8]
H1 - "heat on" indicator [24]
BN - brown
BU - blue
GNYE - green-yellow
9

ENG-002B/p.278 9
In case the appliance does not heat water, check for possible reasons:
- a failure of the mains supplies (e.g. fuses),
- insufficient flow through the heater (e.g. dirty filter, incorrect setting of the flow regulating valve) - refer to
"Flow regulation".
The guarantee does not cover the above repairs.
If there is a fault in the appliance (the heater does not work and all the above reasons do not occur), contact
the nearest authorised service.
EPJ - water heater - 1 piece,
Tap set - 2 piece,
Gasket - 1 piece,
Spanner for regulating the flow - 1 piece,
Screw - 1 piece,
Sleeve - 1 piece,
Set contents
Faults
If the inseparable supply cord
will become damage, it should
be replaced at the manufacturer
or in special repair shop or by
a qualified person in order to
avoid all risks.
This appliance is not intended
for use by persons (including
children) with reduced physical,
sensory or mental capabilities or
lack of experience and knowl-
edge, 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.

10 Installation and operation instruction EPJ