Pentax CT3100 Owner's Manual

Honeywell

Magic Stat@

CT3100

Microelectronic

HEATING OR HEATING/COOLING

THERMOSTAT

For heating or heating/cooling systems per Table 1, page 2.

INSTALLATION MANUAL

This thermostat may be programmed either before or after installation. If programming before installa-

tion. install a 9 V alkaline battew fwrchase separately) in the thermostat, and refer to Owner’s Manual

f&m number 69.6023 for programming instruciions. .’

Any questions concerning the application of this thermostat should be directed to Honeywell Consumer
Affairs at 1-800-466-1502, Monday-Friday 7:30 a.m.-4:00 p.m.. Central time.

IMPORTANT

S.M.
Rev. o-90

Form Number 69-8024-Z

Honeywell

Inc.

1990

P

1

*

W
c

- u)

Your new thermostat is compatible with most 24

V furnace systems, and in most cases, should not

require additional accessories for proper operation.

Table I lists the exceptions which require an

isolating relay or relay and transformer. Review

Table I to determine if your system requires the

accessory. lf so, you may use the order form at the
end of this booklet. Detailed relay installation
instructions are provided along with the accessory.

The isolating relay is a device used for heating
systems where the voltage in the control circuit is
interrupted during parl of the furnace’s cycle.
cutting off power to the thermostat. The isolating
relay supplies the thermostat with a constant 24
volts, eliminating any power interruptions to the

thermostat. The thermostat then receives its

operating voltage directly from the 24 V trans­former, allowing for operation of your thermostat.

PREPARATION

Any questions concerning your system’s com­patibility with your thermostat may be directed to
Honeywell Consumer Affairs at their toll-free
number, l-800-468-1502.

ON LOW VOLTAGE (18 TO 30 Vat). THE

APPLICATION OF HIGHER VOLTAGE IS

DANGEROUS AND MAY CAUSE ELECTRI-

1

INJURY

1

69-8024-Z

P

4

w
b

WIRE THERMOSTAT TERMINALS

cn

NOTE: All wiring must comply with local codes and

ordinances. If unsure about household wiring

procedures, call Honeywell Consumer Affairs
with your questions Monday-Friday, 7:30 a.m.­4:00 pm., Central time, l-800-468-1502.

Refer to notes you made on wire labels when

you remove old thermostat.

Match the letter of your old thermostat wire with
the appropriate letter of your new thermostat
terminal. Refer to figures below and Table II for

additional guidance and typical wire colors for easy

matching. Also note the need to retain or remwe
the factory-installed jumper connected between
terminals RC and R.

TABLE II-TYPICAL WIRE COLORS AND

FUNCTIONS.

aWire colors are typical; verify at heating system

Loosenthe terminal screws, slip each wire
beneath its matching terminals, and tighten

0

screw until all wires have been connected.

6