THERMEx IRP 100 V, User Manual, Page: 15 / 64

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that has the best characteristics of insulation. EWH has two threaded pipes: for cold water input ( fig. 1,
p. 3 ) with the blue ring and hot water exhaust ( fig. 1, p. 2 ), with a red ring.
The control panel is located on the protective cover ( fig. 1, p. 19 ).
Tubular electric heater (TEH), thermostat and thermal switch sensor are mounted on the removable
flange. TEH is used to heat water and is controlled by the thermostat that has a smooth temperature
regulation up to +74° c (± 5° c). The thermostat automatically maintains water temperature at the level
set by the user. Temperature adjustment knob is located on the protective cover (
fig. 1, p. 20 ).
The thermal switch is used to prevent overheating and cut off EWH power when water temperature
e93° C (± 5° c) (
fig. 2 ).
Indicator of EWH operation mode are power selection key backlights ( fig.1, p.17, p.18 ): lighted up when
heating water and turn off when water temperature reaches the set.
Installation and connection
All installation, plumbing and electrical works must be performed by qualified personnel.
Arrangement and installation
EWH installation shall be performed in accordance with marking on the housing.
It is recommended to install EWH as close as possible to the place of hot water using to reduce heat loss
in the pipes. EWH is suspended by brackets on hook anchors (supplied) fixed in the wall.
Hooks mounting on the wall should exclude spontaneous movement of EWH brackets along them.
When choosing the place of installation it should be taken into account the total weight of EWH filled with
water. Walls and floor with low carrying capacity should be strengthened accordingly. To perform
aintenance and servicing of EWH the distance from the protective cover to the nearest surface in the
direction of removable flange axis shall be at least 0.5 m.
In order to avoid damage of the user's and/or third parties' property in the event of a faulty hot water
system, it is required to install EWH in spaces with waterproofing and drainage to the sewers, and in no
case to place under items exposed to the water under EWH. When placed in unprotected areas a
protective plate (not supplied) with drainage into sewers shall be installed under the EWH.
In case of placing EWH in hard-to-reach places EVN in order to perform maintenance and warranty
service (mezzanine floors, niches, ceiling voids, etc.), installation and dismantling of EWH is carried out
by the user on his own or for his own account.
Connection to water mains
Cold water shall be supplied to EWH using pre-filter with water treatment level not less
than 200 µm.
Install pressure relief valve ( 5 ) at the cold water inlet ( 3 ) tube with the blue ring, with 3.5-4 revolution,
ensuring junction tightness with any sealing material (flax, FUM tape, etc.).
Safety valve is back-flow valve preventing ingress of water from the water heater to water main in case of
pressure drop in the latter and in case of pressure increase in the tank when water is heating up, as well
as safety valve, relieving excess pressure in tank when water is heating up. During water heater
operation water may leak out of the exhaust outlet pipe of the safety valve (
7 ) 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 and in a non-freezing environment.
ATTENTION! Do not operate EWH without safety valve or valves made by other
manufacturers.
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Water drainage from the safety valve exhaust pipe into sewage shall be ensured providing with
corresponding drainage when installing EWH ( 8 ).
It is required regularly (at least once a month) to discharge a small amount of water through the exhaust
pipe of the safety valve into the drain to remove lime deposits and to test the operating functionality of the
valve.
Handle (
6 ) is intended to open the valve ( 5 ). It is necessary to control when operating water heater this
handle to be in position closing water draining from the tank.
Connection to water supply system shall be made in accordance with (
Figure 1 ) using copper, plastic
pipes or special sanitary flexible conduits designed for temperature up to 100° c at the maximum
working pressure. Do not use used flexible pipes. Excessive efforts are not allowed when mounting in
order to avoid damage to pipe threads.
After having connected EWH make sure that cold water shut-off valve in EWH ( 15 ) is open and hot water
shut-off valve in EWH ( 14 ) is closed. Open the EWH cold water tap ( 10 ), hot water outlet tap ( 11 ) and hot
water mixer faucet to allow outflow of air from EWH. When complete filling of EWH water will constantly
flow from tap faucet. Close the hot water tap on faucet mixer, check the flange for leaks and, if necessary,
tighten the bolts.
When connecting EWH in places not provided with water mains it is allowed to supply water to EWH
from auxiliary tank using pumping station, or from the tank placed at a height of not less than 5 meters
from the top of EWH.
Connection to power supply
Before connecting of water heater to power supply, make sure that its settings correspond to
specifications of the heater.
ATTENTION! Before switching on power supply, make sure that EWH is filled with water!
Water heater shall be earthed to ensure its safe operation. Water heater is equipped with a
standard power cord with euro plug. Power outlet should have grounding contact with earthing
wire and be in a place protected from moisture, or meet requirements not less than 1PX4.
Operation and maintenance
Control panel has power selection keys ( Fig. 1, p.17, 18 ) with integrated indicator lamps.
Models
ISP , IRP
Key 1 - mode I Key 2 - mode II
1.5 kW 1 kW
For ISP, IRP models both keys correspond to power 2.5 kW. You can select a heat level, basing on needs
in volume of hot water, or depending on the season.
In the course of operation EWH user can adjust heating water temperature using temperature
adjustment knob located on the control panel (
fig. 1, p. 20 ). By turning the knob anticlockwise up to the
stop EWH is disconnected from the power, by turning in a clockwise direction the temperature slowly
increases up to +74° c (± 5° C).
Maintenance and timely replacement of aluminum anode are obligatory conditions for long-term
operation of EWH.
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