WARNING
For an appliance already installed, you must turn off gas supply,
turn off power and allow appliance to cool before proceeding.
Components may be HOT! Failure to comply could result in
severe personal injury, death, or substantial property damage.
List of kit components
Replacement procedure
1. Remove the wires from the Lochinvar air pressure switch as shown in.
2. Locate the two rubber hoses attached to the air pressure
switch. Slide the tubing clips on the rubber
hoses back and detach the rubber hoses from the air pressure
switch.
3. Remove the air pressure switch.
4. Install the new parts4heating supplied air pressure switch.
5. Reinstall the two rubber hoses detached in Step 2
NOTE: Be sure to re-install the clear hose to the negative
port and the gray hose to the positive port. Move the tubing
clips back in place once the rubber hoses are reinstalled.
6. Reconnect the wiring disconnected in Step 1 to the new
air pressure switch. Attach the female disconnect terminal
(LUG7007) over the blade connector as shown in FIG 3.
NOTE: Refer to the wiring diagram located inside the unit
for proper wiring of the pressure switch.
7. Turn on the main electrical power and gas to the unit.
8. Reassemble the top outer jacket panel and resume operation.
Figure 2 Remove air pressure switch
DISCONNECT
WIRES
REMOVE AIR
PRESSURE SWITCH
