Description
The AQ250 family of AQUATROL
Boiler Controls provides
simplified, energy-efficient
control of single
temperature, residential
hydronic heating systems. The
AQ250 easily converts a
single zone heating system
into a room-by-room comfort
control system, or upgrades a
basic, relay-logic zoning
system to intelligent Zone of
Greatest Demand control for
increased energy efficiency
with reduced boiler cycling.
AQ250 boiler controls can
ensure ample supply of hot
water for both space heating
and priority generation of
domestic hot water for
bathing, dishes and laundry.
Features
•Controls up to 2 stages of
heat from a single thermostat.
•Use with AQ1000 2-wire
communicating thermostats, or
most dry contact digital
thermostats.
•Zoning Control for up to 4
zones as shipped; can be
expanded to a total of 16
zones with AQ255 or AQ257
expansion zoning panels and
up to 64 zones when used with
AQ254 Add-A-Temp panels.
•Line or low-voltage output
for zoning equipment (pumps
or valves).
•Zone synchronization through
Zone or Greatest Demand
control.
•Domestic hot water priority
and priority override
protection.
•Boiler short cycling
protection.
•Boiler post purge.
•Freeze protection.
•Pump/valve exercise.
•Boiler shock prevention from
cold water returning to
boiler.
•Automated test feature for
quick start-up and simplified
troubleshooting.
•Integral 38 VA transformer
with self-resetting
electronic fuse.