Hydraulic connections insulation
Any outdoor central heating pipes shall be provided with thermal insulation resistant to
vapour and UV radiation.
Insulation shall be delivered according to applicable regulations
Check hydraulic connections regarding tightness.
Carry out a pressure test;
Insulate all connections and heating circuit pipes (in case of
reverse system the diffusion
barrier is required).
Back-up supply
HTi 20 heat pump may be fitted with back-up power pack whose electrical connection shall be provided
with NC relay using potential-free contacts..
Back-up power pack and relay connection is indicated on Figure 20 on page 32.
In case of power failure, a signal will be forwarded to controller from NC relay and back-up power
mode will be activated. In back-up power mode only P01 circulation pump operation follows to provide
PC protection against freezing.
Zawór różnicowy
W celu prawidłowego ustawienia zaworu przelewowego należy otworzyć całkowicie zawór i zamknąć
wszystkie obiegi grzewcze. Uruchomić pompę obiegową na 100% mocy. Po osiągnięciu maksymalnej
mocy pompy obiegowej zamknąć na tyle zawór różnicowy aby zapewnić maksymalny przepływ wody
CAUTION !
Time of PC protection against power failure depends on type of back-up power pack used
Regular checks of back-up power pack are required
Use of back-up power pack does not ensure total protection for heating system against freezing.
Differential valve
To correctly set the overflow valve, open the valve fully and close all heating circuits. Run the
circulation pump at 100% power. After reaching the maximum power of the circulation pump, close
the differential valve enough to ensure the maximum water flow.
7.3. Pre-commissioning
Pump heat pre-commissioning includes start-up, checks and set-up of heat pump and internal unit parameters,
as well as providing the training for user regarding device operation. Pre-commissioning shall be performed
HKS Lazar authorized service. During pre-commissioning always check carefully heat pump operation and
provide necessary correction. Device contains R290 refrigerant that relates to flammable gas. Therefore
Operation Manual and Guarantee Card v.010
HKS LAZAR Sp.z o.o. ul. Wodzisławska 15B 44-335 Jastrzębie-Zdrój
page.
36
