Document And Keep A Record Of All System Settings - Honeywell AQ250 Series Quick Installation Manual

AQ250 SERIES HYDRONIC CONTROL PANELS
NOTE: When a setpoint is changed on an AQ1000
thermostat, the AQ250's boiler short cycle pro-
tection is disabled in favor of a faster reaction
for the user
3. Turn down the set point of one of the AQ1000 zone
thermostats.
3.1 The zone valve or pump associated with that zone
should turn off.
3.2 The Boiler, and T-T relay outputs should de-
energize.
4. Repeat steps 2 and 3 for all zones to verify each zone is
operating correctly. Thermostats may be exercised indi-
vidually or all together to accelerate the check out pro-
cess.
5. Turn up the DHW AQUASTAT to simulate a call for hot
water.
5.1 If the DHW device is a pump, the DHW relay output
will be energized immediately. The Boiler pump
relay will remain off.
5.2 If the DHW device is a valve, the Boiler pump relay
will come on after a 15 second delay to allow the
zone valve to fully open.
5.3 Turn up the set point of one of the AQ1000 zone
thermostats.
5.3.1 If the DHW relay is configured to control a
pump, and DHW Priority is selected, the
Boiler and associated zone pumps relays will
remain off.
5.3.2 If the DHW relay is configured to control a
valve, and DHW Priority is selected, the
associated zone relays will remain off.
5.3.3 If DHW Priority is disabled, space heating
(zone pumps and valves) will operate
normally even during a call for DHW.
Turn down the DHW AQUASTAT to end the call for hot water.
Space heating operation will continue (if DHW priority is
disabled) or resume (if DHW priority is enabled).
69-1982
9 Purge Air From All System and Zone
Piping using the built-in Purge
Routine feature
Purging air from all zones in the hydronic system can be
easily accomplished with the AQ250 by using a modification
to the "Auto Test" feature (described in section 8A) as follows:
• To purge all zones on the AQUATROL network press the
"Test" button on the AQ1500B0 Control Module once to
begin the "Auto Test" routine. Quickly press it again 3 times
until the Boiler relay LED is illuminated AND the
"Diagnostic" LED of the AQ1500B0 is blinking slowly
(indicating the Auto Test routine has been paused). The
boiler pump will now remain energized for the duration of
the Purge routine (and therefore be purging all loops of air)
until the "Test" button is pressed again.
• The "DIAGNOSTIC" LED will blink slowly while in paused
mode. Continue to purge the boiler loop as long as is
needed to remove air from the system.
• Leaving the boiler pump operating, push the Test button on
the Zoning Module for any space heating zones you wish
to purge. With the first zone's output energized (the LED
for Zone 1 will be illuminated), press the test button again
to pause the Auto Test routine. When Zone 1 has been
sufficiently purged, press the Test button again to begin
purging Zone 2. Again, press the Test button to pause the
Auto Test routine while purging Zone 2. Continue to purge
all other space heating zones in the system.
If additional purging is required for any zone, the Auto Test
procedure can be activated for any individual Zoning Module
by pressing the "Test" button located above that Zoning
Module's DIP switches. Refer to the Sequence of Operation in
the preceding section ("Auto Test—AQ155 / AQ157 Zoning
Modules")
10 Document and Keep A Record Of All
System Settings
Once the hydronic installation with the AQ250 Control Panel
has been set up and is operating properly, it's important to
document all the system settings for future reference.
To facilitate this, all AQ2000 Series Control Panels and
Expansion Zoning Panels are shipped with Installation
Records for documenting these settings. These should be
filled out completely and saved in the Installing Contractor's
files.
14