Reznor EEDU, Installation Operation & Maintenance

Page: 40 / 52

CONTROLS—CONTINUED
Gas Control Valve—Continued
Optional Two-Stage Operation (Makeup Air)—Continued
• Option AG3—ductstat (PN 41700) with capillary tubing (see Figure 31 , DETAIL A):
• The ductstat is attached to the furnace and is connected by a capillary tubing to the sensor .
• For shipping the sensor is temporarily mounted on a bracket on the inner part of the furnace duct side .
• Refer to the
Option AG3: Discharge Air Temperature Sensor Installation section for instructions on relocating
the sensor bulb to the discharge duct .
• The dial has an adjustable range from 60° to 100°F with a fixed differential of 3°F .
• Due to different CFM settings and outside air temperatures, the average downstream outlet air temperature
may not match the ductstat exactly . After the installation is complete, adjust the ductstat to achieve the desired
average outlet air temperature .
• Option AG15—ductstat with electronic remote setpoint module (see Figure 31 , DETAIL B):
• The remote modules and a required transformer are shipped separately for field-installation .
• The sensor is shipped separately for installation in the discharge duct (refer to
Option AG8, AG9, or AG15:
Discharge Air Temperature Sensor Installation
section) .
• Follow the wiring diagram provided with the unit and the manufacturer’s instructions for wiring and installation .
• There will be one module for selecting temperature and one-stage adder module .
• The remote temperature selector has a temperature operating range to 130°F .
⚠ CAUTION ⚠
The remote temperature selector heat/cool selector switch is factory-set in the cool position. For
proper function, set the switch to the heat position.
NOTE: Do not wire the remote module to the control transformer on the furnace.
40 I-EEDU (02-21) 150492-A
Figure 31. Ductstat Options
Optional Electronic Modulation
NOTE: These options require the option CQ1 field-installed fan control (refer to Fan Control section).
• The type and capability of the electronic modulation system, depends on the option selected . Electronic modulation
options are identified by a suffix to the serial number printed on the heater rating plate . AG7 is identified as MV-1,
AG8 is identified as MV-3, AG9 is identified as MV-4, and AG21 is identified as MV-A .
•
Refer to the wiring diagram supplied with the furnace for proper wiring connections .
DETAIL B: OPTION AG15
(A) (B)
DETAIL A: OPTION AG3
(A) REMOTE TEMPERATURE SELECTOR
(B) STAGE-ADDER MODULE