59
WATER PIPING
ENGLISH
While connecting water pipes, followings should be considered.
- Pipe fittings (e.g. L-shape elbow, T-shape tee, diameter reducer, etc) should be tightened
strongly to be free from water leakage.
- Connected sections should be leakage-proof treatment by applying teflon tape, rubber bushing,
sealant solution, etc.
- Appropriate tools and tooling methods should be applied to prevent mechanical breakage of the
connections.
- Drain hose should be connected with drain piping.
- Maximum allowable Torque at the water piping connection is 50 N·m
Torque
wrench
Water Out
Water In
WARNING
!
Water condensation on the floor
While cooling operation using the underfloor heating, it is very important to keep leaving water
temperature higher than 16 °C. Otherwise, dew condensation can be occurred on the floor.
If floor is in humid environment, do not set leaving water temperature below 18 °C.
Water condensation on the radiator
While cooling operation, cold water may not flow to the radiator. If cold water enters to the
radiator, dew generation on the surface of the radiator can be occurred.
Drainage treatment
While cooling operation, condensed dew can drop down to the bottom of the indoor unit. In this
case, prepare drainage treatment (for example, vessel to contain condensed dew) to avoid
water drop. Additional drain pan accessory should be installed to prevent dew to be formed.
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