Ductless Heat Pumps

Install wall mounted indoor units with adequate clearance from the ceiling for making all connections, for servicing the unit, and for replacing the components contained (if necessary). The top clearance should be at least equal to the manufacturer's instructions. If possible, units shall be installed with minimum additional clearance of 300 mm from the ceiling in the case of ceiling heights up to 2.5 m from the floor. In rooms with higher or vaulted ceilings, units shall be installed at such a height (where possible) so that the air discharge is no higher than 2.5 m from the floor.

Besides the above, consideration must be given to the following:

• Ensure that the wall is structurally strong enough to carry the load of the unit.
• Ensure that wall space where the unit is being installed is free from electrical cables, plumbing and cross bracings.
• Ensure that the unit is securely seated.
• If space allows, install floor-mounted units in larger living areas and lower levels of 2-story homes.

Centrally Ducted Heat Pumps

The following considerations apply to centrally ducted ASHP systems:

• If possible, position the air handler in such a location so that the duct system doesn't have unusually long runs or inefficient fittings.

If ventilation is required, the unit must be located so that outdoor air and exhaust air can be ducted to and from the unit.