11
Location
4.0 INSTALLATION
4.3 Unit Mounting
4.3.1 Unit Mounting Methods
The outdoor heat pump unit may be mounted in a number of ways. The most common method is on the ground
mounted on a concrete or pre-fabricated pad. It can also be mounted on a ground or roof mounted metal frame,
wooden frame, or 4” x 4” [10.2 cm x 10.2 cm] wooden stringers. It is extremely important to properly secure the unit
to the pad or frame so it does not shift during high winds, seismic events, or other outside forces to eliminate the
possibility of a safety hazard or physical damage to the unit. Local codes in regions subject to frequent hurricanes
and seismic events will dictate specific mounting requirements and must be followed. It is also important to elevate
the heat pump in areas that receive a significant amount of snowfall so accumulated snow does not block the
outdoor coil and interfere with drainage of water during the defrost cycle. Refer to Section 4.3.4 for typical ground
snow levels for different regions of the USA.
4.3.2 High Wind and Seismic Tie-Down Methods
The manufacturer-approved/recommended method is a guide to securing equipment for wind and seismic loads.
Other methods might provide the same result, but the manufacturer method is the only one endorsed by the
manufacturer for securing equipment where wind or earthquake damage can occur. Additional information is
available on the manufacturer's website or from the wholesale distributor.
4.3.3 Elevating Unit
WARNING: Secure an elevated unit and its elevating stand in order to prevent tipping. Failure to do
so may result in severe personal injury or death.
If elevating the heat pump, either on a flat roof or on a slab, observe the following guidelines.
• If elevating a unit on a flat roof, use 4" x 4" [10.2 cm x 10.2 cm] or equivalent stringers positioned to distribute
unit weight evenly and prevent noise and vibration.
• Heat pump products will need to be elevated per local climate and code requirements to provide clearance
above the estimated snowfall level to ensure the unit will be protected from damage. Failure to follow these
instructions may result in equipment damage and improper operation.
NOTICE: Do not block drain openings on bottom of unit.
• If unit must be elevated because of anticipated snowfall, secure unit and elevating stand such that unit and/or
stand will not tip over or fall off. Keep in mind that someone may try to climb on unit.
To Next Page
Loading...
