Specifications

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W8835A1004
EnviraZone Panel Control System
Description:
Specifications:
Specifications Continued:
The W8835A1004 EnviraZone Panel controls
single-stage, multistage, conventional or heat pump
heat/cool equipment. It controls three zones, and is
expandable up to nine zones with two additional
W8703A Damper Interface Modules (DIM). This
utilizes an advanced zoning control system using the
EnviraCom™ communications protocol, the most
advanced and easiest to install zoning system in the
industry. New control algorithm reduces and
regulates plant cycles, decreases damper cycles, and
increases efficiency.
x Application: Zoning
x Network Zoning: Yes
x Heat Pump Compatible: Yes
x Input Ratings: Voltage: 20-30 Vac, 50/60 Hz.
Power: 11 VA nominal.
x Output Ratings:1.5A run, 200,000 cycles (30
Vac) 3.5A inrush. 1.5A run, 100,000 cycles (30
Vac) 7.5A inrush.
x Humidity Ratings: 90 percent RH at 95°F,
non-condensing.
x Temperature Ratings: Shipping: -20 to 120°F.
Operating: -40 to 150°F.
x LED System: SYSTEM mode LEDs (5) used to
communicate equipment status: Red Heat: Heat
mode. Green Cool: Cool mode. Yellow
Purge:Purge mode. Green Fan: Fan mode. Red
Em Heat: Emergency Heat mode. ZONE LEDs (3)
used to communicate damper status:
Green:Dampers are open or opening. No Color:
Dampers are closed or closing. COM LED (1) used
to indicate communication status: Green: Panel is
transmitting or has received data. No color:
Communications are idle.
x Dimensions: 12-3/4 in. W x 10-3/4 in. H x 1-7/8
in.
x Finish: W8835: Taupe cover, olive-gray base.
x Mounting: Mounts with four screws (provided)
through holes in cabinet back (wall anchors
provided). Wiring: Eighteen-gauge wire for all
equipment and system connections.
x Wiring Connections: EnviraCom™: Four
terminal strips (each with three terminals labeled
1, 2, 3).Dampers: Three terminal strips labeled
M6 (Closed), M4 (Open), M1 (Common).
Transformer 1: R (hot), C (Common).
Transformer 2: T1 (hot), T2 (Common).
Equipment: Rc, Rh, W1/E, W2, W3/Aux, Y1, Y2,
G, O/B. Humidifier: HUM, HUM. Dehumidifier:
DHUM, DHUM. Ventilator: VENT, VENT. Heat
Pump Fault Indicator: L, C.
x Thermostats: VisionPRO
®
IAQ TH9421
Thermostat controls single- or multi-stage
conventional and heat pump equipment.
x Stages: 3 Heat/2 Cool
x Auto Changeover: Yes
x Compatible with Supply Air Sensor: Yes
x Resettable Fuse: Yes
x Individual Zone Fan Control: Yes
x Accessories: For required accessories, Optional
accessories include the W8735 Telephone Access
Module for telephone dial-in and dial-out capability,
W8703 Damper Interface Module to control
additional zones, and the W8735A Serial Adapter
Module for computer interface.
x Tradeline Value: Tradeline
154432 EA 1
W8835A1004 EnviraZone System 3H/2C
ACE # PK UM DESCRIPTION