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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.
Figure 12. Heat exchanger reversal.
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
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.
C L A M P |
IN/O U T H E AD E R |
B R AC K ET |
Figure 13. Flue collector holddown brackets.
