Panasonic Aquarea WH-SXC09H3E5 - Connecting Water Pipes to the Indoor Unit or Mono-Bloc Unit

166 Aquarea air-to-water heat pumps - Planning and installation manual - 02/2022
Installation
6
► Using a wrong tool, e.g. a pipe wrench, can deform or damage the connection. This can
cause leakages. Therefore, use a suitable adjustable spanner
► Too high a tightening torque can cause deformation and consequently leakages.
1
2
1 Adjustable spanner
2 Torque wrench
Therefore, only use a torque wrench to tighten and an adjustable spanner to counter it
(see the illustration above).
6.7.1 Connecting water pipes to the indoor unit or mono-bloc unit
i
Note
Follow the planning documents to connect the water pipes of the heating circuit or follow the
application examples (→ 5.6 Application examples, p. 136).
Carry out the following steps to connect the water pipes of the heating circuit to the indoor unit
(hydrokit or All in One unit) or the mono-bloc unit:
1. Install the required pipes, valves, strainers and other components according to the planning
documents.
2. Connect the water circuit to the supply water outlet and return water inlet of the indoor unit or
mono-bloc unit.
3. Use suitable are nuts to connect the return water inlet (marked “WATER IN”) and supply
water outlet (marked “WATER OUT”). Use a torque wrench to tighten the are nut, and apply
the allowable tightening torque in each case (→ Permissible tightening torques of water
pipes (All in One units), p. 169, → Permissible tightening torques of water pipes (Hydrokits),
p. 169, → Permissible tightening torques of water pipes (Mono-bloc units), p. 170).
4. Only for heat pump models of the F and G Generation: Install a eld-supplied strainer (mesh
width at least 500 to 600 µm) before the return water inlet of the indoor unit or mono-bloc unit
to protect the heat pump. It is advisable to install a shut-o󰀨 valve before and after the strainer
to facilitate later servicing work on the strainer.
This does not apply to the hydrokit and All in One unit of the J or H Generation, because a
strainer with two shut-o󰀨 valves is integrated as standard with these.