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Read carefully the below instructions prior to the installation of the heater!
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.
The manufacturer reserves the right for engineering modification of the product.
The product is designed for permanent contact with drinkable water.
Guide Contents
1.
USE ........................................................................................................................................................................................... 2
2.
PRODUCT DESCRIPTION ...................................................................................................................................................... 2
3.
IMPORTANT NOTICES .......................................................................................................................................................... 3
4.
PUTTING THE HEATER INTO OPERATION ........................................................................................................................ 3
5.
TECHNICAL DATA ................................................................................................................................................................ 4
6.
CONNECTING A HEATER TO A HOT WATER DISTRIBUTION ........................................................................................ 5
7.
SECURITY EQUIPMENT ........................................................................................................................................................ 5
8.
SPARE PARTS ......................................................................................................................................................................... 6
9.
HEATER CLEANING AND ANODE ROD EXCHANGE ....................................................................................................... 6
10.
INSTALLATION REGULATIONS .......................................................................................................................................... 6
11.
CONNECTING A HEATER TO A HEATING SYSTEM ......................................................................................................... 6
12.
PERFORMANCE DATA .......................................................................................................................................................... 8
13.
PRESSURE LOSSES ................................................................................................................................................................ 9
14.
ASSEMBLY GUIDE FOR ZIP-FASTENER INSULATION .................................................................................................. 10
15.
CONSTRUCTION HEATER PARAMETERS ........................................................................................................................ 11
Environment Type:
It is recommended to use the product in indoor environment with air temperatures from +2°C to 45°C and relative
humidity up to 80%.
1.
USE
Indirect stationary heaters lines NTR and NTRR are used for water heating in conjunction with another source of
heating water, most often a gas boiler. The NTRR types combine two sources of heating water (gas boiler + a solar
system, or a heat pump). Their nominal performance provides sufficient amount of hot water 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.
2.
PRODUCT DESCRIPTION
The heater tank is welded from a steel sheet; it is entirely coated with hot water resistant enamel. For additional
corrosion protection, (only in 800 l tanks) a magnesium anode is attached, adjusting the electric potential inside of the
tank, decreasing corrosion. One or two spiral steel pipe exchangers, enamelled on the outside, are welded on inside the
tank, as well as hot and cold water and circulation pipes and a thermowell.
The pipe heat exchanger is only intended
for the heating circuit.
On the heater side, there is a cleaning and revision opening ending with a 178 mm flange; the clearance including 12
M12 bolts is 210 mm. Using a 150/210 reduction flange, heating units of various performances, with a thermostat and a
safety fuse may be mounted into the opening. The NTR and NTRR series heaters are equipped with a G 1/2” opening
