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Honeywell AQ255 Series Product Data page 6

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AQ255 AND AQ257 SERIES EXPANSION ZONING PANELS
Although for many installations, these factory default DIP
switch settings will be suitable, Honeywell recommends that
they be reviewed and changed, as necessary, to get optimal
performance of the hydronic system controlled by the AQ2000
Series products.
Expansion Zoning Module DIP Switch
Location
The AQ15540B (pump Zoning Module) and AQ15740B (valves
with end switches Zoning Module) both have DIP switches in 8-
switch banks and are concealed behind snap-on covers, as
shown in Fig. 4. A chart of the different settings for each DIP
switch is affixed to the inside of the DIP switch covers.
More detailed explanations for these DIP switch settings,
including the pre-set factory defaults for each, are shown in
Table 2 on page 7.
Fig. 4. Location of concealed DIP switches for AQ155 /
AQ157 Expansion Zoning Modules.
Expansion Zoning Module DIP Switch
Settings
Refer to Table 2 on page 7 and check all DIP switch settings. If
necessary, change the switch settings to suit the desired
operation of the hydronic installation.
1. DIP switches #1-4 define the identity (or address) of
each zone on the AQ network. This is how the Control
Module knows that, for example, the zone labeled
Zone 1 on the first Zoning Module is different than the
zone labeled Zone 1 on another Zoning Module.
NOTE: If more than one Zoning Module is connected to
an AQ2000 Series Control Panel, DIP switches #1-
4 must be set to uniquely identify each Module
and its zones. If any of these four DIP switches is
set to the right hand (ON) position for two or more
zoning modules - for example, if two zoning mod-
ules both have their DIP switch #1 in the ON posi-
tion - the AQ2000 Series control will operate
unpredictably.
69-1981—06
a. For the first Zoning Module connected to an AQ2000
b. For the second Zoning Module connected to an
c. For the third Zoning Module connected to an AQ2000
d. For the fourth Zoning Module connected to an
2. Review the settings for DIP switches 5 through 8 of each
Zoning Module connected to an AQ2000 Series Control
Panel to ensure they are correct before system start-up.
a. DIP Switch 5 enables or disables Zone Synchroniza-
• The factory setting disables Zone Synchronization,
•The Zone Synchronization feature replaces the pump/
b. Dip Switch 8 functionality:
•The factory setting enables 1-stage per zoned
M23731
•When using a 2-stage thermostat, set DIP switch 8 to
•When using digital 2-stage thermostats (non-AQ1000
3. Replace the DIP switch cover of each Expansion Zoning
Panel.
•If DIP switches were set for a zoning module included
4. The Expansion Zoning Panel is now ready for Test and
Checkout. Continue with 5, "Test and Check Out the
Installation" on page 7.
6
Series Control Module (this first Zoning Module is
often included as a component of the main AQ2000
Series Control panel), make sure that DIP switch #1
is set to the right hand position (ON) and DIP
switches #2- 4 are set to the left (OFF).
AQ2000 Series Control Module, make sure that DIP
switch #2 is set to the right hand position (ON) and
DIP switches #1, 3, and 4 are set to the left.
Series Control Module, make sure that DIP switch #3
is set to the right hand position (ON) and DIP
switches #1, 2, and 4 are set to the left.
AQ2000 Series Control Module, make sure that DIP
switch #4 is set to the right hand position (ON) and
DIP switches #1, 2, and 3 are set to the left.
tion:
which is an energy saving feature of the AQ2000
panels. Zone Synchronization coordinates zone
demands to start at the same time when the boiler
cycle begins. The AQ2000 functions as activating
valves. The valve logic induces a delay before
activating the boiler pump even when zone pumps
are used. When Zone Synchronization is not
selected, the zone demands are served whenever
they call for heat.
valve selection of previous AQ2000 versions.
thermostat. The zoning module operates as four
1-stage zones.
2-Stg. The 2-stage selection uses TH1 and TH2
inputs for 2-stage thermostat control. For the
selected zone, TH1 is the first stage input from the
thermostat and TH2 is the second stage input.
Inputs TH3 and TH4 operate in same manner. The
2-stage selection reduces the zoning module to a 2
zone module from a 4 zone module.
thermostats), the system set-up process changes
slightly. During system set-up, create an artificial
demand on the zoning module by increasing the set
point on the thermostat. The artificial demand is
required during the PRI/SEC setup menu to select
the primary and secondary loop for each zone and
stage.
in the main AQ2000 Control Panel, be sure to
replace the DIP switch cover on the Zoning Module
before replacing the main Control Panel's front
cover.

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