Specifications

Rinnai Australia 12 Owners Guide & Installation Instructions
GENERAL INSTALLATION INSTRUCTIONS
Where the system is delivered as individual components prepare the components as follows:
DDHEX250 VENTED TANK: Tank with internal coil heat exchange assembly
• Remove outer cardboard box. Inspect for any transport damage.
DO NOT install if any components are damaged.
MANIFOLDED HD200 INFINITY WATER HEATERS
• Remove outer cardboard box. Inspect for any transport damage.
DO NOT install if any components are damaged.
• HD(s) are preset to 85°C (as per dip switch sheet supplied).
• In the case of a single HD200 system the manifold consists of a single HD200 unit.
FITTING KIT: (Including DD250HEXHWTSTAT)
• Remove DD250HEXHWTSTAT from cardboard box. Inspect for any transport damage.
DO NOT install if any of the components are damaged.
Installing the Rinnai DDHEX250 High Efficiency Heat Exchange Hot Water System:
Cold Water Supply:
• Cold water supply line should include required valves as shown above to comply to
AS/NZS 3500 and local regulations.
Hot Water Pipework:
• Ensure all hot water pipework is adequately insulated. The only Non insulated lines should be
the potable cold water supply up to the non return valve.
DDHEX250 Vented Tank:
• Remove the lid and carefully remove the electrical tie supporting the float valve. Replace lid
ensuring EPDM seal is properly located. Latch lid in place.
Assembly (for non skid mounted units):
• Position the DDHEX250 VENTED TANK in desired location. If required, fit feet to base of tank
and fix tank to floor (Refer Figure 4).
Figure 4 - DDHEX250 Vented Tank Feet Fitment
• Attach drain line to 50 mm vent, and run to drain. The outlet should remain visible for detecting
overflow. To reduce heat loss it is recommended that this line should be lagged.
• Attach the DD250HEXHWTSTAT provided to the tank or to an adjacent permanent structure.
Leave sensor sheath and electrical cable packaged. When mounting the location (Tank or
otherwise) you must consider the routing length of the pump power feed and the control power
feed. The length of both of these cable is 2 m. (Refer Figure 5).
Potable
Hot Outlet
Potable
Cold Inlet
Overflow
Vent
Alternate Feet
Locations