Remote Controller Installation Location; Configurations; Cable Lengths And Size - A.O. Smith 705 Operation & Installation Manual

Direct vent tankless water heater
Hide thumbs Also See for 705:
Table of Contents

Advertisement

Remote Controller Installation
Location
The controller should be out of reach of small
children.
Avoid locations where the controller may become
hot (near the oven or radiant heater).
Avoid locations in direct sunlight. The digital
display may be difficult to read in direct sunlight.

Configurations

A maximum of 4 remote controllers can be installed for
a water heater or bank of water heaters. Controllers
can only be wired in parallel. Controllers cannot be
wired in series.
If 4 remote controllers are installed, simultaneously
press the Priority and On/Off buttons on the fourth
controller until a beep sounds.

Cable Lengths and Size

The cable for the remote controller should be a non-
polarized two-core cable with a minimum gauge of 22
AWG. The maximum cable length from each
controller to the water heater depends on the total
number of wired controllers connected to the water
heater.
Avoid locations where the remote controller could
be splashed with liquids.
Do not install in locations where it can be adjusted
by the public.
Water
Heater
Number of Wired
Controllers
305, 505, 705 Indoor Manual
Wire controllers in parallel
Maximum Cable Length for each
Controller to Water Heater
1
2
3 or 4
Controllers
328 ft (100 m)
164 ft (50 m)
65 ft (20 m)
31

Advertisement

Table of Contents
loading

This manual is also suitable for:

305505305

Table of Contents