Tekmar Universal Reset Module - Four tN4, Two Boiler, DHW & Setpoint

Control Description The Universal Reset Module 423 provides outdoor reset to a hydronic heating system in order to maximize comfort and efficiency. The 423 can operate two on / off boilers or two modulating boilers. The 423 can override the outdoor reset water temperature to provide Domestic Hot Water or Setpoint operations. The 423 can operate four outdoor reset water temperatures, up to three of these water temperatures can be mixing water temperatures. To operate a mixing device, a Mixing Expansion Module must be connected to the 423 for each mixing water temperature. Control Microprocessor PID control; This is not a safety (limit) control Packaged Weight 1.9 lb. (1638 g) Dimensions 3-5/8" H x 5-3/8" W x 9/16" D (92 x 137 x 14 mm) Approvals CSA C US, CSA/UL 61010-1, meets Class B: ICES and FCC Part 15 Ambient Conditions Indoor use only, 32 to 122¼F (0 to 50¼C). RH equal to or less than 92% to 104¼F (40¼C), down to 50% above 104¼F (40¼C) Altitude <3000 m (9840 ft), Installation Category II, Pollution Cat...