<HMS140V>
Connection of extra circulation pump
When connecting extra circulation pumps, requirements for
pressure, maximum flow etc must be met. See page 67 for
location.
Connecting the climate system
Pipe connections for the climate system are made at the top.
■ All required safety devices and shut-off valves (installed as
close to the indoor unit as possible) must be tted.
■ Install the bleed valves where necessary, highest point of
the water system in usual case.
■ The safety valve (FL2) must be installed as illustrated. The
entire length of the overflow water pipe from the safety
valves must be inclined to prevent water pockets and must
also be frost proof.
■ The end of overflow pipe from the safety valves must be
left open to the atmosphere. The water may drip from the
pipe.
■ HT30 doesn't have a port for FL2. Safety valve should be
installed on site.
■ HMS140V needs to connect a buffer vessel on the hot
water tank even if hot water supply is not necessary.
See connecting the hot water heater for details.
<HMA100V, HMA100VM>
<HMS140V>
<MT300>
<MT500>
■ When connecting to a system with thermostats on all
radiators, an overflow valve must be f itted, or some of the
thermostats must be removed to ensure sufcient ow.
■ See section Dockings on page 66 for outline diagram.
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