32 / 134 ECO Gold 09/2021
Operation as circulation thermostat
To ensure the greatest volume flow, with operation as a circulation ther-
mostat ensure the shortest possible hose connections with the largest
possible hose internal diameter.
- Connect a hose with 11 – 12 mm inside diameter ( 6.4) to
the pump connections.
Pump connection ( labeling on the housing of the control head):
Outflow OUT (front)
Return to the bath IN (rear)
Note:
- Always use the largest possible cross-section and the shortest possible hose lengths in the external circuit.
- For a hose cross-section that is too small a temperature gradient occurs between the bath and external con-
sumer due to a volume flow that is too low. In this case increase the bath temperature or the pump level appro-
priately.
- Secure the hoses with the aid of hose clips.
- If the thermostat is to be externally controlled, a temperature sensor must be fitted in the external consumer.
- If the consumers are situated at a higher level and with the pump stopped and air seeping into the external fluid
circuit, then even with enclosed circuits the external volume may run empty. There is danger of the thermostat
overflowing.
- If no external consumer is connected, the outflow nozzle must be sealed off or connected to the return nozzle
by a hose.
Pump connections not closed off
Environmental hazard from leaking heat transfer liquid
Fit sealing plugs to the pump connections when no external
consumers are connected and set the flow distribution to in-
ternal “INT”.
Environmental hazard from leaking heat transfer liquid
Do not position the thermostat above the consumer.
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