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THE W964F AQUATROL PROVIDES RESET
CONTROLOF HYDRONIC BOILERS IN COM-
MERCIAL BUILDINGS, MULTI-FAMILY
DWELUNGS, OFFICES, SCHOOLS AND GAR¬
DEN APARTMENTS. THE W964F CAN BE
USED EITHER IN THE ON-OFF MODE TO
DIRECTLY CONTROL THE BURNER, OR IN
THE PROPORTIONAL PLUS INTEGRAL
(P+l) MODE TO CONTROL A MOTORIZED
3-WAY MIXING VALVE.
FEATURES
□ Field selection of on-off or proportional +
integral (P+l) operation. P+l provides stable
temperature control without offset.
□ Selectable outdoor reset ratio from 1:3 to
2.5:1.
□ Selectable parallel adjustment to accom¬
modate individual building construction.
□ 7-day quartz clock with 50-hr battery
backup for programmable setback
schedules.
□ Adjustable differential, from 7 F to 30 F
[4 C to 16 C] in on-off mode, to match burner
operation with boiler characteristics.
□ Adjustable motor timing to 1 or 4 minutes
in P+l mode.
□ Line or low voltage output, no external
transformer needed to power motor.
□ Indicating LEDs on panel show when
valve is opening or closing.
□ Solid state balance circuit provides P+l
control for use with Modutrol motors without
balance relays, or with S684 Step Controller.
□ Options include remote control panel or
space temperature compensating sensor.
■nils
III
Jill
5SSISS ms
NMMi
MitoKi
llilllillipill
'./ / ■ ■ ■
%
' •
P.G.
Rev. 2-89
Form Number
63-2036—4
© Honeywell Inc. 1989
