Honeywell Y8185 - Manual

Honeywell
180850/06828,C, 18185/06828,C,L, Y8185, Y8024,
HEATING AND HEATING/COOLING
NEW CONSTRUCTION THERMOSTATS AND SUBBASES—
INSTALLATION INSTRUCTIONS
1 PREPARATION^----------------------------------
D Check thermostat and subbase (it used) suitability
for the heating or heating/cooling system. Refer to
Tablet.
□ Assemble tools required: flat blade screwdriver,
hand or power drill with 3/16 in. drill bit, wire cutter/
stripper or sharp knife, bubbie level or plumb bob and
line.
LZ] If subbase or wallplate is mounted on a vertical
outlet box, order the optional 193121A Cover Plate
Assembly (inoludes cover plate, adapter ring,
screws).
and
□
Ensure power is off to the heating or heating/
cooling system at the main fuse panei. Most buildings
have a separate switch box or circuit breaker for dis­
connecting power to the heating and cooling (if appli­
cable) equipment.
THIS THERMOSTAT is compatible with virtually all heat­
ing or heating/cooling systems. See Table 1 for addi­
tional thermostat compatibility information.
TABLE 1—THERMOSTAT AND SYSTEM COMPATIBILITY
TYPE OF HEATING SYSTEM TO BE CONTROLLED CONDiTIONS/COMPATIBILITY
Electric (line voltage)—typical baseboard and radiant • The R8239D1015 Isolating Relay or R841 Silent
Switching Center must be installed in the thermostat
control circuit.^
Electric Furnace—forced air • Compatible, Ensure correct subbase identity selected
for fan control.
Gas—Direct Spark Ignition (DSl), Intermittent Pilot (IP),
and Standing Pilot (SP) • Compatibia Ensure that the 24 V control transformer
common is accessible for connection to thermostat
cable conductor and power to transformer is not reg­
ularly interrupted by high temperature or limit
operation.
Heat Pump • Compatible, Ensure correct subbase identity selected
for fan control and changeover control (0 terminal for
cool and B terminal for heat),
• If system with first stage heat pump and gas or oil
second stage heat, use conventional recovery
models.
• If system with first stage.heat pump and electric
second stage heat, use ramp recovery model.
Hot Water Zone • Honeywell 2-wire valves are compatible.
• Some non-Honeywell 2-wire valves will require a'
R8239D1015 Isolating Relay In the thermostat control
circuit.^
• Some 3-wire valves will require an R8239A1052 Iso­
lating Relay in the thermostat control circuib^.b
Oil • Ensure that the 24 V control transformer common is
accessible for connection to thermostat cable con­
ductor and power to transformer is not regularly
interrupted by high temperature, purge cycle, or limit
operation.
• If the control transformer common is not accessible,
a separate transformer and TRADELINE wallplate or
subbase with two C-C clock terminals will be
required.
Vent Damper • Honeywell damper motors are compatible,
• Some non-Honeyweli damper motors will require an
RS239D1015 Isolating Relay in the thermostat control
circuit.3 Check control amperage requirement.
Warm Air Zone • Most are compatible.
Hf thermostat is not compatible with the system being controlled, the system will not operate. No hazard exists. The
thermostat will not be damaged unless it is used to directly control a line voitage system, A Honeywell R841 or
R8239D1015 Isolating Relay must be added to the thermostat control circuit for proper system operation,
^Consult manufacturer for installation requirements.
C.H.
Rev, 7-88*
Form Number
69-0258—2
®Honeywell inc. 1988