Equipment Interface Module (for single and multistage heat pump)
W8635A,W8635B Equipment Interface Module provides 24 Vac control of single- or multi-stage HVAC equipment when used with a T8635L Microelectronic Communicating Thermostat. The W8635A works with up to 2 heat/2 cool conventional applications. The W8635B works with up to 2 heat/1 cool heat pump applications.
W8635A controls conventional gas, oil or electric heat systems.
W8635B controls single-stage or multi-stage heat pumps.
Uses Honeywell EnviraCom
• communications protocol
Application Controls single-stage or multi-stage heat pumps
Network Zoning Yes
Number of Zones Single- or Multi-Zone
Heat Pump Compatible Yes
Compatible with Discharge Air Temperature Yes
Individual Zone Fan Control Yes
Terminal Designations 1, 2, 3, C, R, Rh, L, G, W1,Y1, Aux, E, O, B
Dimensions (in.) 4 3/4 in. high x 4 3/16 in. wide x 1 1/4 in. deep
Dimensions (mm) 121 mm high x 107 mm wide x 32 mm deep
Mounting No. 6 screw and wall anchors supplied in bag assembly
Operating Humidity Range (% RH) 5 to 90% RH, non-condensing
Stages Up to 2 Heat/1Cool
Electrical Ratings 20 to 30 Vac
Frequency 60 Hz;50 Hz
Switch Positions (System) HEAT-OFF-COOL-AUTO-EM. HT.
Ambient Temperature Range (F) -40 F to +150 F
Ambient Temperature Range (C) -40 C to +66 C
Replaces Part Numbers: CARW8635B1004