AQ255 AND AQ257 SERIES EXPANSION ZONING PANELS
69-1981—03 14
NOTE: When wiring zone valves with end switches, note the
transformer's VA:
If low voltage zone valves with end switches are used
for zone control, make sure the selected zone valves
do not draw more power (VA) than the 38 VA capacity
of the AQ10X38 transformer supplied with the
AQ2000 Series Control Panel. This integral trans-
former has enough power to operate 4 motorized
zone valves (such as Honeywell V8043E valves or 4
valves using low-amperage draw, heat motor actua-
tors, such as Honeywell MV100 actuators), plus
power the electronics of the AQ2000 Series Control
Module and up to 16 AQ1000 thermostats. If zone
valves with high-amperage draw, heat motor actua-
tors are used (such as Taco 500 series zone valves),
additional 24 Vac transformer capacity will need to be
wired to the Zoning Module to power the valves. See
Fig. 7 on page 14 for recommended wiring of addi-
tional low voltage VA capacity to AQ2000 Series Zon-
ing Modules.
CAUTION
Equipment Damage Hazard.
Can damage internal circuitry of Zoning Module.
The ES1 and ES2 terminals of the AQ15740B Zoning
Module are powered terminals and must only
be
connected to a set of dry contacts, such as a zone
valve motor's end switch. If power is applied to these
contacts (for example, by running line voltage through
the zone valves’ end switches to bring on a circulator
feeding those valves), the internal circuitry of the
Zoning Module will be damaged, in which case the
warranty for this product will be voided.
Fig. 7. Wiring of additional low voltage VA capacity.
THERMOSTATS
ZONE 1 ZONE 2 ZONE 3
ZONE 4
M31171
THERMOSTATS
ZONE 1 ZONE 2 ZONE 3
ZONE 4
Zone 1
Zone 2
Zone 3
Zone 4
USING AN AQ15740B
VALVE ZONING MODULE
POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
1
Zone 1
Zone 2
Zone 3
Zone 4
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
1
2
3
24 VAC
100 VA
TRANSFORMER
115 VAC
115 VAC
24 VAC
100 VA
TRANSFORMER
1
1
USING AN AQ15540B
PUMP ZONING MODULE
AQ15540B
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