2
Model
Range
EWH useful
volume, l
Average heating time T =
45° C at 2 kW
Installation
IF 30 V/ IF 30 V (pro)
30
26
0 h 40 min.
vertical
IF 50 V/ IF 50 V (pro)
50
43
1 h 07 min.
vertical
IF 80 V/ IF 80 V (pro)
80
70
1 h 47 min.
vertical
IF 100 V/ IF 100 V (pro)
100
85
2 h 14 min.
vertical
IF 30 H/ IF 30 H (pro)
30
26
0 h 40 min.
horizontal
IF 50 H/ IF 50 H (pro)
50
43
1 h 07 min.
horizontal
IF 80 H/ IF 80 H (pro)
80
70
1 h 47 min.
horizontal
IF 100 H/ IF 100 H (pro)
100
85
2 h 14 min.
horizontal
4.
DESCRIPTION AND PRINCIPLE OF OPERATION
The outside casing of the EWH is made of impact-resistant plastic. The inner tank is
made of high-quality austenitic stainless steel, which provides high corrosion re-
sistance and long operating life. The space between the outside casing and the inner
tank is filled with polyurethane foam - a modern, ecologically clean thermal insula-
tion, which has the best heat-saving characteristics. IF/IF (pro) models have two
screwed nozzles: for inlet of cold water (Figure 1, p. 3) with a blue ring and for outlet
of hot water (Figure 1, p. 2) — with a red ring, and equipped with an additional drain
connection (closed with metal plug button) for draining the water and flushing the
inner tank (Figure 1, p. 17). The control panel, in all models, is on the front side of the
EWH. (Figure 1, p. 16).
Tubular heating element (THE), thermostat and thermal switch sensors are mounted
on the removable flange. THE is used to heat water and thermostat provides with pos-
sibility of heating temperature regulation up to +65°
С
. All models have electronic
control with sensor adjustment. Electronics maintain automatically water temperature
at the level set by the user. The thermostat is used for protecting against EWH over-
heating, which disconnects THE from power supply when water temperature exceeds
95°
С
. (Fig. 3).
Safety valve (Fig. 1, p. 5) operates as the check valve, ensuring protection of the water
ingress from the water heater into the sewage system in case of pressure drop in the
sewage system and in case of pressure rise in the tank at high water heating, as well as
the functions of the safety valve, releasing overpressure in the tank at high water heat-
ing. During water heater operation water may leak out of the exhaust outlet pipe of the
safety valve to relieve excessive pressure, which is made for the purpose of water
heater safety. This outlet pipe shall remain open to the atmosphere and be installed
constantly down.
Drainage of water from the safety valve exhaust pipe into the drain shall be pro-
vided with installation of the corresponding EWH drainage.
