2
Read carefully the below instructions prior to the installation of the heater!
Data sheet pursuant to Directive No 442/2004 Coll. and Annex No 7
Dear Customer,
The Works Cooperative of Dražice – Machine Plant, Ltd., would like to thank you for your decision to use a
product of our brand.
With this guide, we will introduce you to the use, construction, maintenance and other information on indirect
water heaters. Product’s reliability and safety is proven by tests implemented by the Engineering Test Institute in
Brno.
The manufacturer reserves the right for engineering modification of the product.
The product is designed for permanent contact with drinkable water.
Guide Contents
PUTTING THE HEATER INTO OPERATION
EXAMPLES OF HEATERS CONNECTION
HEATER CLEANING AND ANODE ROD EXCHANGE
....................................................................................... 10
1.
USE
Thanks to their construction and number of variants, the OKCE 100, 125 NTR series water heaters enable
economic preparation of hot service water (HSW) by means of various power sources. Their nominal performance
provides sufficient amount of hot water for flat units, premises, restaurants, and similar establishments. For HSW
reheat, electricity, various types of central heating boilers, recoverable energy sources (heat pumps, solar
collectors) and combination of those can be chosen.
Service water heating via thermal energy through heat exchanger
Closing valves of the heat exchanger must be opened which ensures heating water flow from the hot water heating
system. Together with a closing valve, it is recommended to install an air outlet valve at the inlet to the heat
exchanger in order to bleed the heat exchanger as needed, in particular before the beginning of the heating season.
The time of heating using the heat exchanger depends on the temperature and flow of water in the hot water heating
system.
OKCE 100 NTR/2,2 kW
100
2,7
6
OKCE 125 NTR/2,2 kW
125
3,5
7,5
Heat losses
((Wh/24hr)/l)
Nominal
capacity (l)
Time of
content
heating
(hours)
Electricity
consumption for
heating of volume
from 15°C to 65°C
(in kWh)
Heat losses
((kWh/24hr)
Heater types
Energy
efficiency
class
