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Figure 13. Flue collector holddown brackets.
Figure 12. Heat exchanger reversal.
To install plastic piping (see Figure 11):
1. Remove CPVC nipples from plastic bag.
2. Screw CPVC nipples into metal flange until tight,
using teflon tape on plastic threads.
3. Attach PVC plumbing to CPVC pipes using PVC
to CPVC cement only.
2G-2. Reversible Water Connections
Teledyne Laars ships the Laars Lite heater with
the water connections on the right side. The Laars Lite
heater can be installed with the water connections on
either side. It could be necessary, or helpful, to switch
the connections to the left side to improve access for
installation service. Perform this modification before
installing the heater using the following procedures:
1. Remove heater door.
2. If there is a vent cap or drafthood (indoor) on top
of the heater, remove it.
3. Remove all hex-head screws fastening the top and
lift the top assembly straight up (see Figure 12).
4. Remove rainshield assembly and set it aside.
5. Remove screws that fasten the gap closures and
put them aside. Remove gap closures.
6. Remove the fiberglass insulation and insulation
retainer covering header sensors (see Figure 14).
7. Disconnect the two yellow leads (Model LLG
only) from the redundant limit fuse located on the
flue collector (see Figure 12).
8. Remove the screws securing the two flue collec-
tor holddown clamps and remove the clamps (see
Figure 13). Remove flue collector.
9. Remove the three jacket/plug grommets and drain
plugs (see Figure 12). One set is located under
the water connections on the right side. The other
is on the left side toward the front of the heater.
10. Tag and disconnect the white wire on the pressure
switch (PS) and the white wire on the Fireman's
switch terminal (see Figure 6 or 7) which leads to
the high limit switch.
11. Remove plastic tie wraps and pull the white wires
out of the front compartment through the vesti-
bule cover and coil them on the heat exchanger.
CLAMP
IN/OUT HEADER
BRACKET