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Part vIII: moUnt the t4900 onto the wallPlate
1. Position the thermostat slightly above the mounted wallplate (see Fig. 9), then secure
the hooks on the back side of the thermostat to the hinge pockets on the wallplate.
note: the top back side of the thermostat should slip into the hinge pockets
easily. Do not use excessive force.
Figure 9.
Secure the hooks
on the back side of
the thermostat to the
wallplate.
2. Align the pins on the back side of the thermostat with the terminal blocks on the
wallplate.
3. Gently bring down the thermostat onto the wallplate so the pins on the back of the
thermostat fi t into the terminal blocks on the wallplate (see Fig. 10).
4. Attach the retaining screw to the underside of the thermostat as shown (see Fig. 10).
Figure 10.
Mount the thermostat
so pins on back fi t into
the terminal blocks on
the wallplate.
Retaining screw
Part IX: verIFY thermostat oPeratIon wIth sYstem tests
System test verifi cation is highly recommended to verify thermostat operation. Follow at
least one procedure in the system tests below. Refer to the Service Menus (see Table 2)
for more system tests. For all system tests, press next to continue to the following system
test, which is the next available Service Menu. Press Done only if fi nished performing all
system tests. Pressing Done exits the Service Menus and turns off all active outputs.
sYstem test maIn oUtPUt (heat)
1.
On the thermostat, press the lower left and lower right keys simultaneously for about
fi ve seconds. Next,
Back, and
Go
2.
Press
until Service Menu 610 appears in the display.
Next
(Default value "00" appears below Service Menu.)
Figure 11.
Service
Menu 610
allows user
to perform
System Test
(Heat).
© COPYRIGHT 2011 PECO, INC. ALL RIGHTS RESERVED.
appear (see Fig. 11).
Done
Service Menu
Default value
(appears
automatically)
3.
In Service Menu 610, press ▲/ ▼to select option "01," Heat Stage 1 (see Fig.12).
note: If 01 is selected, the thermostat will activate the associated output for up to 10
minutes. The user should observe that the fan output (with heat) turns on. The user
may also test more stages of heat according to what is available for the system type.
4.
Press
to complete the system test and exit the Service Menus. After verifying
Done
the system test, the outputs are disabled and the fan will stop.
optional: the user may perform additional system tests by pressing
to access more service menus (see note below).
Next
sYstem test Fan (oPtIonal)
The following instructions assume that the user enters the Service Menus from the Home
Display; it does not assume that the user has followed in sequence from the previous
section. If continuing from the previous section on this page, skip to Step 2 below.
1.
On the thermostat, press the lower left and lower right keys simultaneously for about
fi ve seconds. note: Next,
Go
2.
Press
until Service Menu 620 appears in the display.
Next
(The default value "00" for appears below Service Menu.)
3. In Service Menu 620, press ▲/ ▼to select option "01" (to enable fan output).
note: If 01 is selected, the thermostat will activate the associated output for up to 10
minutes. The user should observe that the fan output will turn on.
4. Press
to complete the system test. After verifying the system tests, the outputs
Done
are disabled.
optional: the user may perform additional system tests by pressing Next.
additional system tests include (see table 2): 600, system test main output (cool);
630, system test emergency output; 640, system test economizer.
4
Service Menus
Service Menus
continue to the
continue to the
Back, and
appear (see Fig. 13).
Done
620 allows user
620 allows user
Service Menu
P/N 70568 3220-2287 REV 00
Figure 12.
Press Done
to complete
test and exit
or Next to
next test.
Figure 13.
Service Menu
to perform a
System Test
Fan.
Default value
(appears
automatically)
Figure 14.
Press Done
to complete
testing and
exit Service
Menus,
or Next to
continue
tests.
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