CENTRAL HEATING CONNECTION
RECOMMENDATIONS
The DHW tank (secondary) must be filled and pressurised
before filling and pressurising the heating circuit
(primary).
- The whole central heating system must be thoroughly flushed with
clean water before being connected to the appliance.
- The central heating safety valve is integrated and located in the
appliance. It must be connected to the drain with an air gap (allowing
an inspection).
- Two 10-litre primary expansion tanks are built into the HeatMaster®
70 / 85 TC (there is no expansion tank in the HeatMaster® 25 / 35 TC). An
external expansion tank must be fitted depending on the installation.
- A de-stratification pump is built into the appliance. This pump must
operate in DHW mode as well as in heating mode. The 3-way switch
must be set to speed 3.
- Fill the system with tap water.
Contact your ACV representative about
the use of inhibitors.
- It is possible that the connections are capped due to the presence
of residual water from tests carried out on the appliance. Please
ensure that all the caps are removed before filling the appliance.
- There is a connection and valve for filling and/or draining the
appliance at the bottom of the unit behind the front panel.
Fill the appliance to the minimum pressure of one bar. Purge the
entire installation and refill the appliance to 1.5 bar.
- Ensure that the condensate trap is fitted and connect the hose to the
drain using a connection that can be inspected. If necessary fill the
trap with clean water. Take the necessary precautions to prevent any
risk of the condensate freezing.
The connection for draining condensate must comply
with current regulations.
If there is a risk of low pressure in the hot water circuit
(installation of HeatMaster® on the roof of a building), it is
essential to install a vacuum breaker device onto the cold
water supply.
1. Isolating valve in the heating circuit
2. Safety valve calibrated to 3 bar, with pressure gauge
3. System filling valve
4. Expansion vessel
5. Drain down valve
6. Condensate discharge
7. Heating pump
ASSEMBLING THE BALL CONDENSATE TRAP
3
4
bar
2
1
O
3
4
1
1
5
2
6
7
INSTALLATION
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