32
External Wiring
Outdoor Sensor Wiring
The Outdoor Reset function and Warm
Weather Shutdown (WWSD) features require
the connection of the included outdoor temper-
ature sensor. See page 61 for outdoor sensor
installation and setup.
Domestic Hot Water Wiring
An indirect water heater sensor is prewired to
the low voltage terminal strip on the wiring
panel below the PRESTIGE control module.
Additional Boiler Limits
Additional boiler limits (High Limit, LWCO,
etc.) can be wired into either the Manual Reset
Limit or Auto Reset Limit terminals of the
PRESTIGE. These limit connections will pro-
vide a “hard” lockout requiring a manual reset
of the PRESTIGE or a “soft” lockout in which
the PRESTIGE will automatically reset when
the limit resets.
Manual Reset Limit and Auto Reset
Limit connections to the PRESTIGE
require a dry contact with no external
voltage present. Ensure no external volt-
age is present on each set of wires before
connecting to the PRESTIGE. If exter-
nal voltage is present, the use of an isola-
tion relay is required to prevent damage
to the Trimax controller.
1. Remove the factory installed jumper wire
on the Manual Reset or Auto Reset termi-
nals that will accept the additional boiler
limit.
2. Connect the additional boiler limit to the
low voltage terminal strip on the wiring
panel below the PRESTIGE control mod-
ule, as shown in Fig. 19 on page 29.
External Modulation Control
The PRESTIGE firing rate can be controlled by
an external modulating boiler controller. See
page 62 for external modulation signal wiring
and setup.
System Sensor Wiring
An optional system temperature sensor can be
placed on the central heating loop to control the
temperature in the central heating loop instead
of the boiler loop. When connected, the PRES-
TIGE will automatically modulate to maintain
the target temperature in the central heating
loop. The boiler supply temperature sensor will
continue to be used as a high temperature limit.
Locate the system temperature sensor
where it can accurately measure the sup-
ply temperature to the heating system.
Inaccurate system temperature readings
could lead to overheating or under heat-
ing resulting in property damage.
1. Connect the system temperature sensor to
the low voltage terminal strip on the wiring
panel below the PRESTIGE control mod-
ule, as shown in Fig. 19 on page 29.
Cascade Wiring
The Trimax control includes the ability to oper-
ate up to six boilers together as one without the
need for external controllers. Consult the
PRESTIGE Trimax Control Supplement for
more information.
Modbus Wiring
The Trimax control includes the ability to com-
municate with building management systems
(BMS) through a Modbus interface. Consult
the PRESTIGE Trimax Control Supplement
for more information.
NOTICE
CAUTION
