Figure 37: Drain hose, safety valve
- Size the drain hose to ensure water can drain
freely when the safety valve is fully open.
- Ensure that the safety valve drain hose is open
to the atmosphere.
- Route the safety valve drain hose with a
continuous slope to the drain.
- Secure the drain hose to prevent movement
when water is running out.
DHW connection and safety assembly
CAUTION
Do not exceed the maximum pressure
(see section 13, Specification).
CAUTION
The appliance must be operated with
pressure fittings.
Cold water pipe:
Permitted materials are galvanised steel, stainless
steel, copper and plastic.
CAUTION
A safety valve is required.
DHW line:
Permitted materials are stainless steel, copper and
plastic.
Installing the DHW circulation line
A DHW circulation line with an external
DHW circulation pump can be connected at the
"DHW circulation" connection.
- Remove the sealing flap from the "DHW
circulation" connection.
- Connect the DHW circulation line.
Connection:
- Thoroughly flush the pipes.
- Install the DHW outlet pipe and the cold water
inlet pipe (see section 4.2.4 Hydraulic and
refrigerant connections).
- Install a type-tested safety valve in the cold
water inlet pipe. Note that, depending on the
supply pressure, a pressure reducing valve
may be additionally required.
- Size the drain pipe to ensure water can drain
freely when the safety valve is fully open.
- The safety valve drain opening must remain
open to the atmosphere.
- Route the safety valve drain pipe with a
continuous slope.
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