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Honeywell
THIS SOLID-STATE SYSTEM IS A COMPONENT
FOR COMPONENT FIELD REPLACEMENT
FOR THE RANCO EA3 LODAPT SYSTEM. THE
BASIC SYSTEM CONTROLS UP TO 12 ZONE
DAMPERS, 3 HEATING STAGES, 3 COOLING
STAGES, AN INTEGRATED ECONOMIZER,
AND MODULATING VALVES FOR HOT WATER
AND CHILLED WATER. OPTIONAL UNITS
PROVIDE CONTROL OF
ZONES, 5 STAGES OF ELECTRIC HEAT,
VARIABLE AIR VOLUME (VAV) SYSTEM FAN,
AND A FOURTH STAGE OF COOLING.
thermostat, modified by zone discharge
sensor, provides direct control of
associated zone damper.
•i Pilot duty SPDT relays control heating
and cooling stages.
to provide true first stage of cooling, using
outdoor air whenever possible.
•i System switches all stages off when
power is intermpted; switches all stages
on when power is restored. Compressor
turn on time delays must be incorporated
for each compressor.
and W7084A Zone Adder are short-circuit
protected. Short circuits of 24 Vdc from
load analyzer or zone adder will not
damage their power supplies.
individual or all zones by adding a time
clock.
HG/KH
7/90
UP TO 12ADDlTlONAL
Form Number 63-4179
© Honeywell 1990
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Related Manuals for Honeywell W7080A
Summary of Contents for Honeywell W7080A
- Page 1 Compressor turn on time delays must be incorporated for each compressor. 0 Power supplies in W7080A Load Analyzer and W7084A Zone Adder are short-circuit protected. Short circuits of 24 Vdc from load analyzer or zone adder will not damage their power supplies.
- Page 2 S7666A Simulator - (Ranco TEI) portable unit provides check of system by substituting adjustable DC voltage for zone thermostat and sensor signals. Table 1 Relay Contact Ratings for W7080A, W7083A, 1953258 T7080A,B Solld State, Dual Setpoint Thermostat - Voltage Inrush...
- Page 3 Inverter (VAV fan W7082A MOUNTING: motor control The W7080A, W7081A, W7082A, W7083A, W7084A units each attach with four screws through mounting holes in the base (saws not provided). The 195325B Fourth Stage coding Board can be mounted on a Rat surface. Sea in- dividual specification sheets for mounting details.
- Page 4 SYSTEM ACCESSORIES: Transformers: AT20-20 VA; AT7240 VA; A T 8 8 - 7 5 VA 1914448 Metal Cover - Designed to protect the W7080A, W7081A, W7082A, W7083A and W7084A components when mounted on open surface. Overall dimensions of units with metal cover in place: 6% in.