Johnson Controls S351 Humidity Stage Module
Humidity Stage Module
S351
The S351 Stage Module is used in conjunction with the W351 Humidity Control to add multiple staging capability. Using a Y350R, up to five S351s can be added to the W351 via the 5-pin, plug-together connector. Using a 24 VAC or greater external transformer, up to nine S351s can be added. The S351 has an SPDT output relay and three adjustments including offset (de-energize stage action from setpoint), humidification or dehumidification mode, and differential.
• humidification or dehumidification mode, field selectable
• adjustable differential and offset
• 5-pin connectors eliminate wiring between modules
Select a link under the "item" tab below to order.
| Cat # | Output | Differential Temperature | Offset |
| S351AA-1C | SPDT Relay | 2 to 10% RH | 2 to 30% RH |
| Case and Cover Material: | NEMA 1, high-impact thermoplastic | |
| Supply Voltage: | 24 volt power supply provided by Y350R or external 24 VAC transformer | |
| Power Consumption: | 1 VA max. | |
| Ambient Temperature: | Operating | -30 to 150°F (-34 to 66°C) |
| Shipping | -40 to 185°F (-40 to 85°C) | |
| Ambient Humidity: | Operating | 10 to 90% RH non-condensing |
| Shipping | 0 to 95% RH non-condensing | |
| Relay: | SPDT enclosed relays, contacts rated at 10 amp non-inductive, 1/2 hp, 120/240 VAC |
|
| Mounting: | Surface or DIN rail | |
