ADDING REFRIGERANT
CAUTION!
It is compulsory that this procedure be performed only by qualified workers.
The outdoor unit is pre-charged with refrigerant suitable for system operation with tubing length
up to 8 m. Longer piping length may affect adversely system performance. Overflowing with
refrigerant shall have same negative impact on system operation.
If it is necessary to add refrigerant R417a to the system, it should be known that for each
additional meter of tubing must be added 20 g refrigerant and the following shall be necessary:
а
) electronic balance with accuracy to 10 g;
b) bottle with refrigerant R417a.
It shall as well be necessary to use a hose with appropriate charging connections.
CONNECTING THE WATER HEATER (INDOOR UNIT) TO WATER SUPPLY
NETWORK
When connecting the water heater to the hot and cold water in the building plumbing you must
comply with arrows and pointing rings on water heater pipes. The cold water pipe is indicated
with arrow and blue color (inlet pipe), while with arrow and red colour – the hot water pipe
(outlet pipe). Pipes ends are threaded 1/2”. You may refer to water tank connection scheme on
Fig. 12.
1. Water tank;
2. Inlet pipe;
3. Outlet pipe;
4. Closing valve (option);
5. Combined valve;
6. Reduction valve (where necessary, i.e. with
water supply network pressure over 0.6
MPa)
1
3
2
5
6
4
Hot water
Cold water
Cold water
To mixing tab
The water heater is fit with combined check-safety valve mounted on the cold water pipe in
factory.
The minimum water supply pressure for system normal functioning is 0,2
МРа
.
WARNING!
It is not allowed to install check or shut-off valves between the combined valve and
the water heater! It is absolutely forbidden to clog the combined valve side hole and/or block its
lever!
If necessary you may shape a drainage system for the water dripping from the combined valve
side hole. The drainage water must have constant downward gradient, located in frost free
environment and its ends permanently connected to the atmosphere.
Following its connection to the water supply network the tank must be filled with water. The
steps of this procedure are as follow: open completely the hot water tap of the farthest mixing
tap; then open the shut-off valve, pos. 4 on Fig. 12; and wait until dense water jet flows out;
close the hot water mixing tap and lift the combined valve lever, then wait about 30-60 seconds
until complete and full water jet flows; close the valve lever.
WARNING!
If from the valve there is no water flow or the jet is insignificant (at normal pressure
in the supply network), this is a malfunction indicating that impurities from the plumbing
connections or pipes have blocked the safety valve of the combined valve.
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