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TM-90R/TM-2000 HUMIDISTAT INSTALLATION INSTRUCTIONS
CAUTION: DISCONNECT THE TM-90R/TM-2000 TRANSFORMER FROM THE
RECEPTACLE AND SWITCH "OFF" THE FURNACE ELECTRICAL
SUPPLY PRIOR TO INSTALLING THIS HUMIDISTAT.
1. Remove Humidity Control from front side of Base Plate and re-
attach to back side of Base Plate.
protrude through the hole in the Base Plate.
2. Attach Shaft Extension to
Humidity Control Adjustment
Knob. (Fig. 3)
3. Place Mounting Template on
a smooth, vertical surface of
the furnace return air plenum.
This location should be close
enough to the TM-90R/TM-2000
housing that the 10' length of
The Adjustment Knob must
2-conductor thermostat wire
can be connected to each
device and secured along the
length.
Follow all Template
Instructions.
4. Cut away the plastic
material which partially
covers the wiring slot on the
base plate.
(Fig. 5)
(Figs. 1 & 2)
(Fig. 4)
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Summary of Contents for Field Controls 46259500
- Page 1 TM-90R/TM-2000 HUMIDISTAT INSTALLATION INSTRUCTIONS CAUTION: DISCONNECT THE TM-90R/TM-2000 TRANSFORMER FROM THE RECEPTACLE AND SWITCH "OFF" THE FURNACE ELECTRICAL SUPPLY PRIOR TO INSTALLING THIS HUMIDISTAT. 1. Remove Humidity Control from front side of Base Plate and re- attach to back side of Base Plate. The Adjustment Knob must protrude through the hole in the Base Plate.
- Page 2 5. Refer to the Wiring Diagram and attach the wires to the Humidity Control terminals #2 and #3, both Transformer terminals and both TM-90R/TM-2000 terminals, as indicated. The Wiring Diagram shows the proper wire termination required for each connection. CAUTION: All wiring should conform to The National Electrical Code, NEC, and any applicable local codes.
- Page 4 6. Attach the Foam Mounting Gasket to the Return Air Plenum around the opening which was previously cut. Secure the Base Plate to the furnace plenum using the two screws supplied. Be sure that the wires are placed through the wiring slot.
- Page 5 NOTE: The Humidity level indications on the Humidistat Cover are for reference only. It may be necessary to adjust the Knob to a higher or lower setting based upon the actual humidity level within the home. P/N 46259500...