3.0 System Hydraulics
3.1 System Hydraulics
1. It is essential that the Baxi Ambiflo
™
Heat Pump be installed correctly to the relevant system design
(Figs. 3 to 7). The installation must comply with one of the systems shown or the terms and conditions of
the warranty will be invalidated.
2. Please refer to the commissioning instructions supplied with this unit for the parameter settings for the
system diagrams shown.
3. Where radiators are used, the dirt separator must be fitted as shown in the hydraulic system diagrams
(see Figs. 6 and 7 for relevant system). Failure to do this will affect your warranty. Where the Baxi
Ambiflo
™
Heat Pump is fitted to an existing system it is essential to power flush the system prior to
installing the unit and fitting the dirt separator.
4. Where Isolation Valves are used on the hydraulic system (Figs. 3 to 7) it is essential that these are full
bore valves to minimise the system resistance.
5. It is important that the internal bore of the pipework used between the Ambiflo
™
Heat Pump and the
buffer is at least equal to, or ideally larger than the internal bore of the pipework supplied. This will allow
reduced pump speeds and help to minimise system running costs.
IMPORTANT: We do not recommend use of the Baxi Ambiflo
™
with existing conventional radiators unless
it can be demonstrated that the heat output from these radiators at the lower average system temperature can
provide the necessary level of comfort (e.g. 20°C room) under load conditions (0°-3°C outside).
It is very important not to oversize the radiator system for maximum return temperatures of 45°C, as this can
result in room temperatures higher than required. If this is the case, then contact your installer to re-parameter
your maximum system water temperature to compensate.
We do not recommend the use of the Baxi Ambiflo
™
for preheating domestic hot water using conventional
cylinders.
The Baxi Ambiflo
™
heat pump is designed for average system temperatures between 25°C and 50°C.
Suitable heat emitters include:
- Low temperature panel radiators.
- Skirting radiators.
- Fan convector radiators.
- Underflow arrays.
- Oversize high temperature panel radiators.
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