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HI 400HD D / HD G Operation
4.4 Blower Duct Heater Option
Overview
An optional 10 cm (4-inch) duct for preheating air drawn into the combustion blower
can be installed. This accessory is recommended for use in extremely cold
temperatures.
Note: The installation instructions below are provided for your convenience. Refer
to the complete instruction sheet packaged with the blower duct kit.
Prerequisites
Blower duct kit (includes 10 cm (4-inch) snorkel and flexible duct with integral
clamps)
Phillips screwdriver or nut driver
Flat screwdriver
Procedure
Follow the procedure below to install the blower duct.
1. Remove the square plate from the bottom of the front duct adapter. Replace the
square plate with the 10 cm (4-inch) snorkel (a) and tighten the screws securely.
2. Install the front duct adapter according to the instructions provided in Installing
the Front Duct Adapter.
3. Fit one end of the blower duct (b) over the 10 cm (4-inch) snorkel and tighten
the clamp. In the same manner, connect the other end to the 10 cm (4-inch)
supply outlet (c) on the side of the machine.
NOTICE: Do not connect a blower duct longer than 4.5 m (15 ft.) to the snorkel.
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