REMKO RBW 300 PV - Manual (Page 14)

5 Installation
General notes
The hot water heat pump is a factory-tested unit.
Once the water connections have been professio-
nally established, the storage tank has been filled
and the electrical connection (230 V/ 50 Hz) has
been established, it is possible to switch the unit
on.
WARNING!
The hot water heat pump must be connected
and put into operation exclusively by a certified
and authorised specialist!
WARNING!
It is necessary to fill the unit with water before
the electrical wiring is connected!
Sanitary connection and assembly
NOTICE!
If using copper and galvanised steel tubes
always observe the sequence in the flow direc-
tion: Copper after galvanised steel!
Avoidance of heat losses
In order to minimise heat losses plan the water
lines as short as possible and include thermal insu-
lation. Have the lines installed by a professional.
Sanitary installation
The direct connection with a stainless steel tank
must never be produced from copper or galvan-
ised. If a stainless steel tank is connected with a
galvanised cold water line (with the requisite fit-
tings or threaded connections) then a fine filter
must be fitted upstream of the stainless steel tank
in order to protect against rust particles, etc. Brass,
red brass, plastic and stainless steel are all suit-
able connection materials. If a stainless steel
storage tank is connected with a galvanised or
copper line then it is necessary to fit a red brass or
brass fitting between these parts.
It is possible to dispense with the use of a false
anode if the chloride content in the drinking
water is < 150 mg/l.
Always install a pressure reducer in the cold
water line.
Pressure reducer
Always install a pressure reducer in the cold water
supply line!
Safety valve
The safety valve prevents positive pressure from
building and serves to drain off the excess water,
which occurs due to expansion of the storage tank
contents when heated.
n Only install a type-approved membrane safety
valve. This must be adjusted such that it safely
prevents the maximum permissible positive
operating pressure of the heat pump storage
tank - of 6 bar - from being exceeded by more
than 1 bar. The connection diameter of the
safety valve must be at least 1/2“. No shut-off
valve may be installed between the safety
valve and storage tank.
n The drain line downstream of the drainage
funnel for the safety valve must exhibit twice
the cross-section of the safety valve connec-
tion, it must not lead outdoors and must not be
blocked. Drainage should take place exclu-
sively via the cold water connection or
drainage cock.
During the heating process, the expansion water
must visibly drip out of the safety valve drain (heat-
up time 4-7h!).
n The hot water distribution system should be
configured without circulation.
n The hot water lines must be thermally insulated
according to the local (municipal) regulations.
Charging with a second heat generator (solar,
combustible burner for solid fuel)
n The supply and return lines must be thermally
insulated by design, and must be connected
such that no return or single tube gravity circu-
lation can arise with electric heating and the
circulation pump switched off.
n The expansion of the heating water must be
guaranteed at all times (also with electric
heating).
n Fit a bleeder at the top point in the hot water
line.
REMKO RBW
14