Honeywell AQ25A Series Technical Reference Booklet page 186

AQ255 AND AQ257 SERIES EXPANSION ZONING PANELS
NOTE: When wiring zone valves with end switches, note the
transformer's VA:
f low voltage zone valves with end switches are used
I
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.
100 VA
TRANSFORMER
115 VAC
1
1
POWER SUPPLY . PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.
69-1981—03
115 VAC
THERMOSTATS
ZONE 1 ZONE 2 ZONE 3 ZONE 4
24 VAC
USING AN AQ15740B
VALVE ZONING MODULE
Zone 1 Zone 2
1
2
3
1
2
3
1
2
3
Fig. 7. Wiring of additional low voltage VA capacity.
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.
100 VA
1
TRANSFORMER
Zone 3 Zone 4
24 VAC
1
2
3
1
2
3
14
THERMOSTATS
ZONE 1 ZONE 2 ZONE 3 ZONE 4
AQ15540B
USING AN AQ15540B
PUMP ZONING MODULE
Zone 1
Zone 2 Zone 3 Zone 4
1
2
3
1
2
3
1
2
3
M31171