Honeywell AQ250 Series Quick Installation Manual page 9

Boiler Pump
Connect the N and L wires of the boiler loop pump to
the N and switched "hot" terminals of the line voltage
"Boiler" output shown in Figure 13. The ground wire of
the pump can be connected to any of the 6 ground
screw terminals located on the back surface of the
Control Panel enclosure.
DHW Aquastat
Wire the DHW Aquastat to the N and switched "hot" ter-
minals of the DHW output as shown in Figure 13. If
using a low voltage zone valve, wire the primary of a
spud-mounted transformer (115V - > 24V) to the DHW
line voltage contacts and connect the low voltage zone
valve to the secondary terminals of this transformer. A
spud-mounted transformer may be located in one of the
conduit knockouts on the bottom of the AQ250 Control
Panel.
Line Voltage Aux Output
NOTE: Use of this output is optional
To connect a line voltage auxiliary device to these con-
tacts, such as a boiler bypass pump, power the pump
from the N and L terminals on the bottom of the Control
Module, running the L "hot" lead through the AUX.Pump
contacts. See Figure 13 for details.
NOTE: The AUX.Pump dry contacts are line voltage-
rated but unpowered. Wire the Installer-
defined AUXiliary output to the line voltage
AUX terminals, as shown in Figure 13. The
exact wiring schematic will depend on what is
connected to these dry contacts.
Fig. 14a Connections for Multiple Zoning Panels - Parallel Wiring
Zone 1
ZR Boiler DHW
Aux
9
AQ250 SERIES HYDRONIC CONTROL PANELS
Fig. 13 Wiring of the AUX.Pump line voltage-rated dry
contacts (example shown is a by-pass pump).
Step 6 Connection To Line Voltage Power
Finally, connect the N and L line voltage inputs of the
AQ250 Control Panel (at the bottom of the
transformer) to the electrical distribution panel and
power up the Control. A service switch should be
installed on the L "hot" lead to the distribution panel.
If multiple Zoning Modules are connected to the AQ250
Control Panel, the line voltage wiring can either be run
directly from the N and L terminals on the transformer to
each of the Zoning Modules (Figure 14a) or run in
"daisy chain' fashion from the N and L terminals of one
AQ2000 Module to the N and L terminals of another
Module (Figure 14b).
CAUTION
Electrical Shock or Equipment Damage Hazard.
Can shock individuals or short equipment
circuitry.
When line voltage is applied to the AQ250 Control
Panel and the front cover of the Panel is removed,
there is a risk of electrocution. Be careful to avoid
contact with the line voltage (N and L) terminals, either
with your fingers or with metal tools (such as a
screwdriver) when power is applied to the Control
Panel.
Zone 2 Zone 3 Zone 4 Zone 1 Zone 2
BY-PASS PUMP
Zone 3 Zone 4 Zone 1 Zone 2 Zone 3
M13781
M13902
Zone 4
69-1982