39
12.0
WATER CONNECTIONS
12.1
GENERAL
Adaptors are required to convert the NTP (male) thread on the heat exchanger to BSP (female). These
adaptors can be found in the packing carton. The BSP section of the adaptor is indicated with blue paint.
EcoKnight™ water heaters require a minimum flow rate and must be installed with separate
storage vessels. Suitably sized pumps and separate storage vessels are available from
Lochinvar limited as ancillary options.
Lochinvar limited insists on the use of glanded pumps and a suitably sized pump will always
be quoted alongside the water heater. Failure of the heat exchanger or other components due
to insufficient flow will not be covered under the warranty.
Recommended pipework layouts are available for different water heater and storage vessel combinations. Please contact Lochinvar
Technical Support for details.
The requirements of minimum water flow are given in Table 12.4.1. Recommendations for the water circulation system are given in
BS6644 and CP 342. The following notes are of particular importance.
1.
EcoKnight™ must be used with a direct type storage vessel (LST). Contact Lochinvar Limited for help in sizing the storage
vessel.
2.
Circulating pipework not forming part of the useful heating surface should be insulated. Cisterns, expansion vessels and
pipework situated in areas exposed to freezing conditions should also be insulated.
3.
Drain valves must be located in accessible positions that will permit draining of the entire system including the unit and the
storage vessel.
4.
Tapping sizes for connection to the water system are detailed in Section 4.0.
5.
Ideally, individual valves should be fitted to each unit to enable isolation from the system. The arrangement must comply
with the requirements of BS6644.
6.
The flow and return circulating pipework must be correctly sized to ensure the water heaters can supply sufficient hot water,
general guidance is provided in Section 0 If your installation is outside this guidance please contact Lochinvar Technical
Support for assistance with pipework sizing.
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