Outdoor Unit Installation; Location; Electrical Connection; Thermostat Control Wiring - Rinnai DO-SC18Z91 Operation & Installation Manual

5. OUTDOOR UNIT INSTALLATION

5.1

LOCATION

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The unit must be installed in accordance with relevant authority requirements
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The unit should not be accessible to general public
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Do not install the unit where there is a possibility it will present a noise problem for either the home owner or
neighbours, or exceed the noise guidelines as set down by local or state legislation or regulatory bodies
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Avoid positioning unit in direct sunlight
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The unit must be installed in an area that is well ventilated - avoid positions where condenser air may be
recirculated
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Allow for drainage of rainwater
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Ensure minimum clearances, as outlined in the outdoor unit dimensional drawings Figure 14 (Section 5.7), are
maintained
Mounting at ground level:
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The unit shall be mounted and fastened on to a solid, level foundation
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Apply rubber "waffle pad" or similar between the unit feet and the foundation if required
Mounting on the roof:
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Ensure that the weight of the unit is not excessive for the design of the roof structure
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Unit shall be mounted onto either a suitably designed metal frame or timber blocks, ensuring that there is
an insulating membrane such as rubber "waffle pad" between the roof structure and the frame for vibration
elimination
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Metal frame or timber supports must be of sufficient size and length to prevent the unit tipping over in high
winds
5.2

ELECTRICAL CONNECTION

All electrical work shall be carried out by a qualified and licensed electrician. The installation shall comply with
current relevant standards, wiring rules and local authority requirements. Means for disconnection (i.e. isolating
switch and circuit breaker) shall be incorporated according to wiring rules. Wiring sizing is the responsibility of the
installer as it depends on the conditions and regulations applicable to each installation site. Refer to the electrical
drawings and specifications for electrical data.
The electrical controls are housed in the outdoor unit. The electrical installation requirements are generally as
follows:
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The outdoor unit shall be supplied directly from a distribution board
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An external isolating switch shall be installed adjacent to the outdoor unit
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Short circuit protection for the unit shall be supplied at the main switchboard using either a 'D-Curve' type circuit
breaker (or equivalent), or HRC fuse. Wire fuses shall not be used - check SAA Wiring Rules for "Protection"
sizing and cable sizes. Refer to specification sheet for circuit breaker sizing
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Do not drill into the cabinet as critical internal components may be damaged during this process
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24 volt control wiring shall be installed from the outdoor unit to the Heater and or thermostat controller as
required
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Avoid running the control/communication cable near sources of electromagnetic interference such as electrical
motors, transformers, high current cables etc. Use shielded cable if necessary
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Ensure that power supply is adequate, and phase rotation is correct
5.3

THERMOSTAT CONTROL WIRING

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All control wiring is 24 Volt, and is required to be installed between the outdoor unit and the Gas Ducted Heater
/ Controller in accordance with the wiring instructions supplied with the Brivis Gas Ducted Heater
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For any other make of heater (Non- Brivis) contact the heater's manufacturer
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Minimum control circuit wire size is 1.0mm² with a maximum of 1.5mm²
Brivis 40 ICE Fixed Speed OIM