Robertshaw J10-808 and J10-821 Humidistat User manual

Robertshaw
Brand
Robertshaw
Model
J10-808 and J10-821 Humidistat
Type
User manual

Robertshaw J10-808 and J10-821 Humidistat

The Robertshaw J10 Series humidistat is a device that will control the automatic operation of a low voltage (24V) humidifier placed in a warm-air duct of a forced-air furnace. It can be wall mounted in the living area beside the furnace thermostat or it can be mounted directly in the cold air return duct of the furnace. Wall mounting provides extra convenience; however duct mounting allows the control to sense the air returning from all living areas and provides better overall humidity control.

The humidistat has two terminals, #2 and #3, to which the wires from the humidifier should be connected. The wires should not be taut after connection. All wiring should conform to NEC recommendations and any local codes.

Robertshaw J10-808 and J10-821 Humidistat

The Robertshaw J10 Series humidistat is a device that will control the automatic operation of a low voltage (24V) humidifier placed in a warm-air duct of a forced-air furnace. It can be wall mounted in the living area beside the furnace thermostat or it can be mounted directly in the cold air return duct of the furnace. Wall mounting provides extra convenience; however duct mounting allows the control to sense the air returning from all living areas and provides better overall humidity control.

The humidistat has two terminals, #2 and #3, to which the wires from the humidifier should be connected. The wires should not be taut after connection. All wiring should conform to NEC recommendations and any local codes.

INSTALLATION DATA
J10-808 AND J10-821
HUMIDISTAT
Applicaon
The J10 Series humidistat will control the automac operaon of a low
voltage (24V) humidier placed in a warm-air duct of a forced-air furnace.
Installaon Instrucons
Disconnect the electrical power. Determine the humidistat locaon.
The control can be wall mounted in the living area beside the furnace
thermostat or it can be mounted directly in the cold air return duct of
the furnace. Wall mounng provides extra convenience; however duct
mounng allows the control to sense the air returning from all living areas
and provides beer overall humidity control.
Wall Mounng (Figure 1)
1. Turn the electrical power o.
2. Determine the humidistat locaon. This control should be mounted on
an inside wall where normal air circulaon is present. For most
residenal applicaons, locate the control adjacent to the exisng wall
thermostat for easy installaon and wiring.
3. Remove the cover from the back plate and punch the wiring knockout
on back plate.
4. Place the back plate on a at mounng surface. Mark two mounng
hole locaons, and the wire knockout hole.
5. Drill
3
/
16
” diameter holes for drywall anchors (if needed) and insert
dry wall anchors.
6. Drill ½” diameter hole for low voltage wires. Pull the wiring through the
access hole and through the back plate.
7. Mount the back plate securely to the wall with screws provided in the
parts package. NOTE: Make sure the back plate is at without any
undue stress.
8. Connect wires to Terminals #2 and #3. Wires should not be taut aer
connecon. NOTE: All wiring should conform to NEC
recommendaons and any local codes.
9. Re-install the front cover.
10. Turn the electrical power back on.
Operaon Test
1. Cycle the humidistat at least three mes to assure proper funcon.
2. Check ambient humidity level with a sling psychrometer. Too high
humidity levels may cause damage to the building.
CAUTION: The furnace blower must be operang before the humidier
is acvated.
Customer Service Telephone 1.800.304.6563
Customer Service Facsimile 1.800.426.0804
[email protected]
Robertshaw® and Ranco® are trademarks of Robertshaw, its
subsidiaries and/or affiliated companies. All other brands mentioned
may be the trademarks of their respective owners.
For Technical Service
Telephone 1.800.445.8299
[email protected]
www.robertshaw.com
©2018 Robertshaw
11/18 – 352-00275-001
Duct Mounng (Figure 2)
1. Turn the electrical power o.
2. Remove the knob and cover from the back plate (knob pulls o).
3. Remove the control module from the front of the back plate and
mount on the reverse side.
4. Connect the sha extension to the control module (through back plate).
5. Place the template on a vercal at surface of the return air plenum.
6. Mark and drill mounng holes.
7. Cut out the secon of the plenum to allow the control module to
pass through.
8. Break o the wiring tab on back plate.
9. Aach 24V wires to Terminals #2 and #3. NOTE: All wiring should
conform to NEC recommendaons and any local codes.
10. Secure the back plate to the plenum (screws provided). Direct all wires
through the wiring slot, but do not pull wires too ghtly. Make sure
the back plate is at and is not under any undue stress.
11. Re-install the front cover and knob.
12. Turn the electrical power back on.
Operaon Test
1. Cycle the humidistat at least three mes to assure proper funcon.
2. Check ambient humidity level with a sling psychrometer. Too high
humidity levels may cause damage to the building.
CAUTION: The furnace blower must be operang before the
humidier is acvated.
INSTALLATION DATA
J10-808 AND J10-821
HUMIDISTAT
  • Page 1 1
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Robertshaw J10-808 and J10-821 Humidistat User manual

Robertshaw
Brand
Robertshaw
Model
J10-808 and J10-821 Humidistat
Type
User manual

Robertshaw J10-808 and J10-821 Humidistat

The Robertshaw J10 Series humidistat is a device that will control the automatic operation of a low voltage (24V) humidifier placed in a warm-air duct of a forced-air furnace. It can be wall mounted in the living area beside the furnace thermostat or it can be mounted directly in the cold air return duct of the furnace. Wall mounting provides extra convenience; however duct mounting allows the control to sense the air returning from all living areas and provides better overall humidity control.

The humidistat has two terminals, #2 and #3, to which the wires from the humidifier should be connected. The wires should not be taut after connection. All wiring should conform to NEC recommendations and any local codes.

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