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W
S
EBASTO
CHOLASTIC
Fig. 5-6: Series Plumbing Circuit - Transit Model (Engine Rear)
5.6.3 Instructions for Integrating into the Coolant System
CAREFULLY READ AND UNDERSTAND THE FOLLOWING INSTRUCTIONS BEFORE PROCEEDING WITH
INSTALLATION!
1. Remove the radiator cap and release system pressure.
2. Close the shut off valves for heating system, if so equipped, or pinch off the supply and return line with hose
clamping pliers.
3. Plumb into the system as shown in figure 5.4 or 5.5.
Two long brass 90° elbows with mounting flanges have been provided for making connections into existing
coolant lines. To install:
-
remove heater hose access cover(s) running down left side of floor inside bus at a location over top of
heater installation.
-
find and identify heating circuit supply hose. This is the hose you will use to plumb the Webasto heater
into the system.
-
locate and mark suitable location on floor (above heater) where brass elbows will be installed.
NOTE:
When properly installed, the elbows should protrude down into the heater enclosure area where they
can be easily connected to the coolant pump inlet and heater outlet.
-
once you are satisfied with the location, making certain there are no obstructions, you can now bore 2 holes
32 mm (1-1/4") through the floor.
-
from inside the bus, drop elbows down through the floor and align with the heating circuit supply hose, inlet
elbow pointing forward and outlet elbow rearward.
-
secure elbow flanges to floor with sheet metal screws.
4. From inside the heater enclosure, connect the inlet elbow (supply) to the coolant pump and the outlet elbow to
the Webasto heater outlet with rubber elbows and fittings provided.
5
From inside the bus, cut the previously identified heating supply hose at a point where it can be connected to the
inlet and outlet elbows.
6. Connect the heater supply line running from the engine to the inlet elbow. Connect the other cut end of the
supply line to the outlet elbow.
7 . Secure all hose connections with hose clamps.
S
ERIES
STOP!
5
I
NSTALLATION
5-5
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