Install Instructions

34
8.0 External Wiring
2. Follow thermostat manufacturer’s instruc-
tions for proper installation. Thermostat
should be located on an inside wall away
from any heat or cold influences such as
drafts, lights, fireplaces, etc.
3. Set the thermostat anticipator (If applica-
ble) as follows:
- Set for 0.2 amps when wired directly to
the PRESTIGE.
- Set to match the electrical power
requirements of the connected device
when wired to zone relays or other
devices. Refer to the relay manufactur-
er’s specifications and the thermostat
instructions for additional information
on anticipator setting.
The use of power stealing thermostats
which draw their power from the PRES-
TIGE can lead to erratic or unpre-
dictable operation.
8.7 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 64 for outdoor sensor
installation and setup.
8.8 Domestic Hot Water Wiring
The Domestic Hot Water terminals can accept
either a call from an aquastat (thermostat) or
temperature sensor. Use of the included indi-
rect water heater sensor is recommended.
1. Connect the DHW aquastat or temperature
sensor to the low voltage terminal strip
located on the bottom of the main control
board as shown in Fig. 19 on page 31 &
Fig. 22 on page 33.
8.9 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 ACVMax 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 reset limit terminal strip locat-
ed on the bottom right of the main control
board as shown in Fig. 19 on page 31.
8.10 External Modulation Control
The PRESTIGE firing rate can be controlled by
an external modulating boiler controller. See
page 65 for external modulation signal wiring
and setup.
8.11 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
NOTICE
NOTICE