Operating instructions

Part number 550-142-086/0113
15
WM97+ Gas-fired water boiler — User’s Information Manual
CWH Performance Mode quick set-up
HOT WATER CAN SCALD. Read DANGER information on page 13 before adjusting.
Mode Description
OFF-DISABLED
If selected by a User — CWH operation is turned off; can be turned
on by user in the Performance Mode Menu
NOTICE — If a Contractor selects OFF-DISABLE, the CWH cannot be
turned on by the user. It can only be activated by a Contractor.
HIGH
PERFORMANCE
Delivers the highest performance available and maximizes the energy
of the stored water for demanding applications. Use during peak-
demand periods when multiple fixtures will be running.
NORMAL
A balance of performance and efficiency. Delivers hot water for a
shower, sinks, or faucets continually (except WM97+70 model).
General setting for most times of the day.
ECONOMY
Saves energy by operating with lower boiler temperatures and
storing tank at lower temperature for lowest standby losses. Not
recommended for showering with 70°F temperature rise (except for
the WM97+155 model). Ideal setting in schedule mode for low-use
periods.
VACATION
Maintains tank temperature above 50°F to deter freezing in tank. This
mode will not supply hot water to the user.
SCHEDULED
This mode allows programming up to 4 different performance modes
to occur at different times of the day. There are different schedules
for Weekdays (M-F) and Weekends. This allows energy savings by
keeping the tank at low temperatures when not needed and meeting
peak demands during times of typical high usage. These times must
be programmed by the contractor or user.