AQ252 Universal Injection/Mixing Boiler Reset Control Panels
5 69-1986—02
Fig. 1. AQ252 Control Panel layout (AQ25242B shown).
Fig. 2. Internal wiring for AQ2000 Series components line voltage relays.
2MOUNTING
This section describes how to mount the Control Panel,
Expansion Zoning Panels, and the Thermostats.
Mount AQ252 Control Panel
Mount the control panel on the wall:
1. Use the template supplied with the AQ252 Series
Control Panel to mark mounting holes for panels.
2. Install two top screws, mount the panel, and install the
two lower screws.
Mount Expansion Zoning Panel(s)
If there are Expansion Zoning Panels to install, mount them to
the wall now:
1. Remove wire channel plugs from the AQ252 Control
Panel and any Expansion Zoning Panels (see Fig. 3).
2. Mount Expansion Zoning Panel on the right-hand end of
the AQ252 Control Panel. Install two top screws of the
Expansion Zoning Panel, ensuring it is level with the
adjoining Control Panel, and install two lower screws.
3. Reverse wire channel plugs and re-insert them into their
slot, to form a wiring channel between the Control Panel
and the Expansion Zoning Panel (see Fig. 3) and to
connect the two panels together.
4. Repeat steps 1–3 for any additional Expansion Zoning
Panels.
M27682A
LOW
VOLTAGE
(24 V)
LINE
VOLTAGE
(120 V)
ZONING MODULE
TRANSFORMER
CONTROL MODULE
FOR THE AQ25242B TERMINALS CAN BE LINE VOLTAGE (IF USED WITH PUMPS) OR LOW VOLTAGE (IF USED WITH ZONE VALVES)
1
1
Zone 1
Zone 2 Zone 3
Zone 4
M27683A
CONTACTS
SYMBOL
Zone 1
Zone 2 Zone 3
Zone 4
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