Section 7, Plumbing the System
International Thermal Research
7-5
7.4 Coolant Plumbing Installation
Procedure
To install and connect the Hurricane
®
Chinook and heater hose:
1
Hose and/or tubing used to connect to the Hurricane
®
Chinook
supply and return connections must be heavy duty heater
hose, minimum 3/4” I.D, or 5/8” PEX. Refer to Figure 7-3 for
connecting PEX tubing to the ¾” hose-barb connections.
Install the cabin fans for the space heating loop by connecting
the supply line to the lower port on the cabin fan and the
outlet to the next fan in the series loop. Each cabin fan heater
should be plumbed so that fluid supply enters the bottom of
the heating core and exits from the top. This helps keep air
from being trapped in the cabin fan core. Ensure proper
direction of flow.
See Figure 7-1: for the location of the
fittings.
Ensure there are no kinks or sharp bends that might
restrict the fluid flow. See
Figure 7-3: for methods of
attaching the heater hose
.
2
Once the space heating loop has been set up with the cabin
fans, connect the space heating loop supply line to the "Heating
Loop Supply" connection on the Hurricane
®
Chinook. Connect
the space heating return line to the "Heating Loop Return"
connection.
3
The Hurricane
®
Chinook has an overflow fitting located on the
top of the unit at the back of the heater. Ensure a four (4)
quart minimum overflow bottle is attached to the overflow
fitting. The connection point on the overflow bottle is at the
bottom.
