Dražice OKC 250 NTR - 1 Product Technical Specification; Function Description; Advice for Customers; Hot Water Consumption

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1 PRODUCT TECHNICAL SPECIFICATION
1.1 FUNCTION DESCRIPTION
Indirect stationary NTR and NTRR series TANKS are used to prepare HSW in combination with another hot
water supply, mostly gas boiler; in NTRR types in combination of two hot water sources (gas boiler + solar
system, heat pump). Their nominal performance provides sufficient amount of hot service water (HSW)
even for large flat units - premises, restaurants and similar establishments. In case of increased hot water
consumption, these tanks heat water continuously, operating similarly to flow heaters.
Closing valves of the heat exchanger must be opened which ensures heating water flow from the hot water
heating system. Together with 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 (Figure 1, Figure 2, Figure 3, Figure 4 - by type). The time it takes to heat up using the
heat exchanger depends on the temperature and flow of water in the hot water heating system. A
combined tank is made in universal design – depending on the need of connecting the closing valves to the
heating element either from the right, or from the left.
1.2 ADVICE FOR CUSTOMERS
1.2.1 HOT WATER CONSUMPTION
Consumption of hot water in households depends on the number of people, amount of
sanitary equipment, length, diameter and insulation of piping in the flat, or on individual
habits of users. The cheapest option of water heating comes at the time when the
electricity rate is reduced.
Find out in what time intervals your electricity supplier provides reduced tariff and,
depending on that information, select relevant volume and power input of the heater so that
your hot water consumption covered the needs of your household.
1.2.2 ENERGY SAVING
Hot utility water reservoir is insulated by means of top-quality polyurethane foam with zero
CFCs content. Adjust the temperature of the heater's thermostat to that level only that you
need to run your home. Thus you will reduce electricity consumption, as well as the amount
of lime sediments on the walls of the receptacle and on the heat exchanger.
Benefits of using indirect heater:
- installation and connection to hot water supply,
- Very fast hot utility water heating,
- Enamelled steel tank ensures compliance with all hygienic requirements for the