Reznor YDSA Unit Installation Manual - Manual (Page 63)

Form I-Y, P/N 273646R6, Page 63
14. Electric Heat Only - From Test Mode Screen E.a.5,
press the enter key until the cursor is flashing on the
Heat Capacity: field. Press the up arrow key to set
the Heat Capacity value to 100% and press the enter
key until the cursor is flashing on the Stg 1: field.
Press the up arrow to set the Stg 1 value to ON.
Using a digital volt meter, check for the appropriate
line voltage on the load side of the Stg 1 contactor to
verify that it has energized. Once verified, press the
down arrow key to set the Stg 1 value back to OFF.
If no voltage is present, refer to Form O-Y for
instructions.
Depending upon configuration the unit may be
equipped with up to 6 stages of electric heating.
Perform the same procedure for the remaining
applicable heating stages.
NOTE: The heat capacity: field is only associated
with Stg 1.
15. Gas Heat Only - If the unit is equipped with gas
control system Option AG73 or AG74, the modulating
gas valve and its associated heat capacity value will
need to be used to verify and (if required) adjust the
manifold pressure settings. See paragraph 9.2 for
checking gas pressure.
To test staged flame proving, see the following
instructions.
From the Test Mode Screen E.a.5, press the enter
key until the cursor is flashing on the Heat Capacity
Field:
•
Option AG73 or AG74 only - Press the up arrow
key to set the Heat Capacity value to 30%.
•
Press the enter key until the cursor is flashing on
the Stg 1: field.
•
Press the up arrow to set the Stg 1 value to ON.
NOTE: Depending on the gas control option (Option
AG71, AG72. AG73, or AG74), the unit may be
equipped with up to 4 stages of gas heating turned
on via the controller menu. If applicable, perform the
following step for stage 2.
•
Press the enter key until the cursor is flashing on
the Stg 2: field.
•
Press the up arrow to set the Stg 2 value to ON.
If no voltage is present at the contactor(s), refer to
Form O-Y for instructions.
Press the enter key in succession until the cursor
is flashing in the uppermost left hand corner of the
screen and use the up arrow key to navigate to Test
Mode Screen E.a.1. Press the enter key to select the
Enable: field. Press the down arrow key to set the
value to OFF.
Press the enter key in succession until the cursor
is flashing in the uppermost left hand corner of the
screen and use the down arrow key to advance to
the Test Mode Screen E.a.11.
If the gas heating section(s) have proved flame, the
associated DI15 (and DI16 if applicable) will show
status ON.
NOTE: Allow a 3-minute period for flame proving.
Once verified, press the down arrow key to set the
Stg 1 and Stg 2 values back to OFF.
If the DI15 (and DI16) fail to show status ON, refer to
Form O-Y for instructions.
Press the enter key in succession until the cursor
is flashing in the uppermost left hand corner of the
screen and use the up arrow key to navigate to the
Test Mode Screen E.a.6.
16. Optional Energy Recovery with or without
Optional Preheat - From Test Mode Screen E.a.6,
press the enter key until the cursor is flashing on the
Wheel: field.
Press the up arrow key to set the wheel value to
ON. Press the enter key to select the Preheat: field.
Press the up arrow to set the preheat value to ON.
Using a digital volt meter, check for the appropriate
line voltage on the load side of the wheel contactor
and preheat contactor (if applicable) to verify that
they have energized. Once verified, set the values for
the Wheel: field and the Preheat: field to OFF.
(continued)