Locating and mounting the system is very important when designing the equipment area and plumbing.
The M7 technology opens up new possibilities since the system and heater can be mounted on either the suction or pressure (discharge) side of the pump.
To improve reliability, take steps to minimize vibration from the pump(s) that could be transmitted to the system box. Using rubber isolation pads under the pumps and flexible PVC between the filtration pump and the heater are just two ways to help minimize vibration.
Mount the system with the heater horizontal and as low as possible in the equipment compartment.
Do not mount the system directly under the control panel mounting location to avoid any potential for water to dip directly on the system. Allow a drip-loop in the control panel wires to keep any water that may travel down the wire from wicking into the system box.
Pressure-Side System Mounting
When mounting the system on the pressure side of the pump, care must be taken to mount the system in such a way that it is supported without hanging on the plumbing. Each box has available ears that mount to the back of the box with screws to facilitate this type of installation.
Suction-Side System Mounting
When mounting the system on the suction (vacuum) side of the pump, care must be taken to mount the system in such a way that it is aligned with the suction port on the pump wet-end. The suction-side mounting can generally be done much lower in the system, making it easier to keep proper water flow in the heater at all times. The system should be mounted with appropriate fasteners, using the feet molded on the bottom of the box.
Note: When employing suction-side mounting, the system may need to be placed on a spacer block so that it complies with UL height requirements for electrically live components, in the same manner as a pump motor. In the case of the system box, the live parts closest to the ground will usually be the heater connections.