Fig. 6—setting heat anticipator, 6 mount the thermostat, 7 set heat anticipator – Honeywell Y8185 User Manual
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D Note the tabs on the top inside edge of the ther
mostat base. These fit the slots molded into the top of
the wailplate or subbase.
n Hang thermostat base on wailplate or subbase.
6 MOUNT THE THERMOSTAT—-----------------
! I
Insert the two captive mounting screws located in
the bottom corners of the base (Fig. 5).
Q Firmly tighten screws.
7 SET HEAT ANTICIPATOR----------------------
n Make sure you know the current draw (anticipator
setting] for your system. This information can be found
printed on the primary control at the furnace or on the
furnace output/listing label. However, it is good in
stallation practice to physically test the heating primary
current draw before setting the heat anticipator. This is
done by connecting the R and W terminals through a
suitable meter (0-5 A), or with thermostat wire held
through a clamp on meter using multiple loops to mag
nify the field (ten [oops are typically used so meter read
ing can be divided by ten). Physical measurement is
urged, as modern HVAC equipment typically incor
porates multiple control circuit loads, and accurate
anticipator setting prevents poor control and callbacks.
□
Move heat anticipator lever to match the current
draw (Fig. 6), except in single-stage heat pump sys
tems. In these systems, set the anticipator at 1.4 times
the actual current draw to reduce the cycling rate.
anticipator
5CALEPLATE
ANTICIPATOR
SETTING
LEVER
OIL BURNER CONTROL
SHOWS
ANTICfPATOn
SHOWS
ANTICIPATOfl-
SETTIKG
SHOWS
ANTICIPATOR
SETTfNG
ZONE VALVE
TYPICAL GAS VALVE
Fig. 6—Setting heat anticipator.