6 720 645 518
2
Installation
1 Installation
1.1 Tools needed:
• Phillips head screw driver
• Needle-nosed pliers.
1.2 Preparation
BPush power button to “OFF” and unplug power cord.
BLoosen two Phillips head screws on bottom rear of
front cover. Pull cover bottom outwards then lift
cover upwards to remove.
1.3 Removing control unit
BRemove three Phillips screws on front of control unit.
(Fig. 1, pos.1).
BTurn control unit to expose the rear. (Fig. 2, pos. 2).
Fig. 1 Control unit front
BRemove rear cover from control unit to expose circuit
board electrical connections. (Fig. 2).
Fig. 2 Control unit rear (wiring not shown for clarity
purposes)
Fig. 3
Note: For commercial applications the
heat exchanger warranty is 2 years, from
date of original installation and operation.
For more details consult the water
heater’s installation manual for warranty
period.
Note: Avoid touching printed circuit board
as static discharge may damage circuitry.
