Combined Vertical & Horizontal Flue; Condensate Drain; Important Considerations For Condensate Drain Pipe; Length & Changes Of Direction - Rinnai HD210i Installation Manual

INSTALLATION METHODS
COMBINED VERTICAL & HORIZONTAL FLUE
The Combined Vertical & Horizontal Flue option (Fig. 14, page 7) allows the water heater to be installed virtually
anywhere using a wall (FFPPWALLKIT) or roof (FFPPROOFCOWL) terminal. Extension pieces (FFPPPIPE1000,
FFPPBEND90 and FFPPBEND45) can be mounted horizontally or vertically as required.
Installation Method
Refer to "Flue Length, Bends & Appliance Settings" on page 6 for flue run length limitations.
All horizontal flue is to be installed with a 3° fall towards the water heater.
IMPORTANT
1. Using a combination of the installation procedures covered in the "EXTENDED HORIZONTAL FLUE" on
page 6 and "Vertical Flue" on page 9, determine and install the required components. Note that PVC
joints MUST be secured with the three (3) self tapping screws supplied with the component, refer to Fig. 13
on page 9.

CONDENSATE DRAIN

The Rinnai range of condensing water heaters generate condensate continuously at a rate of up to 5 litres per hour
as a by-product of highly efficient gas burner system. This condensate must be drained via a pipe to a suitable
point of discharge (Fig. 15). Because the condensate is a by-product of gas combustion it is mildly acidic.
For this reason copper tube and fittings MUST NOT be used as it will corrode. Instead, Rinnai recommend
plastic pipes and fittings such as Unplasticised Polyvinyl Chloride (UPVC) or Polyethylene (PE) which is commonly
used for irrigation piping.

Important Considerations For Condensate Drain Pipe

The content of AS/NZS 3500 'Temperature / Pressure Relief and Expansion Control Valve Drain
Lines' has been used as a guide in preparing these considerations.
NOTE
A
B
C
Remove cap from condensate drain outlet
Water heater drain outlet connection, R½" (15 mm) BSP male. Condensate drain outlet connection, 1/2"
A
(15mm) BSP male nylon (Note: the black plastic shipping cap MUST be removed from the condensate drain
outlet prior to water heater operation).
PE R½" BSP (15 mm) female to barbed irrigation system connector (13 – 19mm) or equivalent plastic fitting.
B
Drain pipe and fittings to match item
C
Continuous fall (of at least 2°) from water heater to discharge point. Lengths and bends in accordance with
D
'Length & Changes Of Direction' table below.
Suitable points of discharge are deemed to be drains, sewers or pits. DO NOT discharge onto electrical
E
connections, earth stakes, copper pipes, concrete paths or into a pond.
Length & Changes Of Direction
Maximum length and changes of direction greater than
45° for the drainage pipe to be in accordance with that
described in the Table 2.
Rinnai
D
A
.
B
Table 2. Drainage lengths & changes of direction
Max length (Metres)
Max changes of direction >45°
10
Condensate drain applies to
both internal and external
models, the external model
NOTE
is shown in this illustration.
2°
9
3
E
Fig. 15
8 7 6
4 5 6
HW_CF_FFPP_FIM