Honeywell AQ25A Series Technical Reference Booklet page 179

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).
b. For the second Zoning Module connected to an
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.
c. For the third Zoning Module connected to an
AQ2000 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.
d. For the fourth Zoning Module connected to an
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.
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-
tion:
• The factory setting enables Zone Synchronization,
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.
• The Zone Synchronization feature replaces the
pump/valve selection of previous AQ2000 versions.
Table 2. AQ15540B Zoning Module (Pump Zoning Module) DIP Switch Arrangement.
DIP
Switch
1 Zone Address: The positions of these 4 DIP switches define the unique address for
2 each zone on the AQUATROL network. For each group of 4 zones, there can be only
3 one DIP switch in the right hand (ON) position.
4
The correct DIP switch settings for each zone module are:
• First Zone (1-4) Module:
• Second Zone (5-8) Module: 2 = ON position; 1, 3, and 4 = OFF position
• Third Zone (9-12) Module:
• Fourth Zone (13-16) Module: 4 = ON position; 1, 2, and 3 = OFF position
• If set to SYNC, zone synchronization is enabled.
5 • If set to NOT, zone synchronization is disabled.
• If zone valves are normally closed (N.C.), set the NC/NO DIP switch to the OFF
position.
• If zone valves are normally open (N.O.), set the NC/NO DIP switch to the ON
6 position.
• If set to Group (ON position), the AUX Pump contacts on the Control Module are
switched when any of the zones on this Zoning Module are active.
• If set to - (OFF position), the AUX Pump contacts are not affected by activity on
7
these zones.
• If set to 2-stage (ON position), then 2-stage operation is activated on thermostat
inputs. The zoning module operates as two 2-stage zones.
8 • If set to 1-stage (OFF position), then operates as four 1-stage zones.
a
If used with an AQ250 RelayPlus Control Panel, the AQ15000B Boiler Control Module's DIP switch #5 must be set to "GROUP"
position and DIP switch #6 must be set to "MAIN" position.
If used with an AQ25A, AQ251 or AQ252 Control Panel, the EQUIPMENT SETUP > AUXILIARY I/O > AUX PUMP menu option
on the Control Panel must be set to "GROUP."
AQ255 AND AQ257 SERIES EXPANSION ZONING PANELS
Switch Description
1 = ON position; 2, 3, and 4 = OFF position
3 = ON position; 1, 2, and 4 = OFF position
7
b. Dip Switch 8 functionality:
• The factory setting enables 1-stage per zoned
thermostat. The zoning module operates as four
1-stage zones.
• When using a 2-stage thermostat, set DIP switch 8
to 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.
• When using digital 2-stage thermostats (non-
AQ1000 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.
3. Replace the DIP switch cover of each Expansion Zoning
Panel.
• If DIP switches were set for a zoning module
included 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.
4. The Expansion Zoning Panel is now ready for Test and
Checkout. Continue with 5, "Test and Check Out the
Installation" on page 8.
a
Label and Factory Settings
AQ15540B
Diagnostic
Diagnostic
Test
Test
M27696
M23720A
69-1981—03