AQ252 Universal Injection/Mixing Boiler Reset Control Panels
35 69-1986—02
ZONING Settings which the AQ252 uses specifically for Zone operation
HEAT DMND RESET / SETPT RESET Defines whether the device connected to Heat (terminals
13 and 14) is a conventional (non-communicating)
thermostat (RESET) or a setpoint load (SETPT) - such as
a pool or spa.
• When RESET is selected, the AQ252 fires the boiler to
produce supply water at a temperature defined by the
AQ's reset algorithm (Outdoor or Load) when the Heat
terminals are shorted.
• When SETPT is selected, the AQ252 operates the
boiler at the HIGH LIMIT setting [EQUIPMENT SETUP
> BOILER SETTING > HIGH LIMIT].
HT DMND PRIO YES / NO NO Displays only if HEAT DMND = SETPT.
Selects whether a HEAT DEMAND (device connected to
the Heat terminals on the AQ control module) can take
priority over space heating. If yes, set to YES; if not, set to
NO.
• If both DHW Priority and Heat Demand Priority are set
to YES and both are active at the same time, DHW
Priority takes priority over Heat Demand Priority.
PRIO.OVER YES / NO NO Displays only if HT DMND PRIO = YES.
Selects whether (following a 30 minute uninterrupted call
for Heat Demand) the priority given to the Heat Demand
can be overridden to minimize the chance of freeze up or
excessive cool down of the space heating zones.
• YES = On = Allow Heat Demand Priority override.
• NO = Off = Do not allow Heat Demand Priority override.
ZONING VALVES
TIME TO OPEN
5 - 230
(seconds)
15
(seconds)
Time required for the zone valves installed on space
heating zones to fully open.
PRI/SEC PRI / SEC SEC Identifies the heating water loop that each space heating
zone is supplied by the primary boiler loop (PRI) or the
secondary mixed loop (SEC).
Displays the PRI/SEC sub-menu with the following
selections for all or individual zones:
ALL PRI:
ALL SEC:
A-1: PRI/SEC
A-2: PRI/SEC
…
D-16 PRI/SEC
Table 6. Installer Menu – Equipment Setup. (Continued)
EQUIPMENT SETUP
Menu Option Range
Factory
Default Description
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