andrews R18 Series, Техническая документация инструкция

Страница: 11 / 71

18IP22B
3
2 DESCRIPTION
2.1 General information The R18 series water heaters are atmospheric open flued, low
The R18 series is CE approved for the following countries:
thermal capacity gas-fired water heaters.
These high efficiency water heaters are designed to provide hot
water to various industrial and commercial applications where
there can be varying demands and fluctuating loads.
Several models are available with heat inputs from 538 kW to
1122 kW and recovery rates from 10.513 litres per hour to
21.926 litres per hour, based upon a temperature rise of 44 K
or 8.260 litres per hour to 17.226 litres per hour, based upon a
temperature rise of 56 K.
The R18 series of water heaters are available in 6 types:
132, 154, 180, 210, 244 and 280.
The last three digits of the type number indicate the number of
burner bars present in the burner assembly. The load at nett
calorific value is approx. 3,6 kW per burner.
All water heater types are fitted with a 18-tube heat exchanger
of the 2 pass type including stainless steel manifolds.
The use of extruded copper fin pipes in the heat exchanger
leads to higher efficiency.
The R18 water heater is
supplied with a primary pump , to
ensure the optimum flow rate (to prevent the precipitation of
lime scale) and a bypass.
Thermal radiation losses are minimized by the optimal con-
struction of the combustion chamber in which high-grade insu-
lation is integrated.
The advanced construction of the R18 enables swift assembly
and dismantle, which simplifies maintenance and inspection.
All water heaters have full sequence automatic control with
overheat cut off, water flow switch, modulating turn down on
gas and combustion air (for improved efficiency at varying heat
loads) and fault indicators.
The R18 has an electronic protection and ignition system ,
indicated by E .
The electronic PID version controlled by a simple to operate
regulator is indicated in the
M version .
Appliance category B11.
Great Britain, Belgium, Denmark, France, Ireland, Italy, Spain
and Sweden under Product Identification Number 0063AQ6600.