Installation guide

ManualsBrandsColeman ManualsFurnaceOfficial Coleman gas furnace

66840/035-20003-001Rev.B(1205)

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PROPANE AND HIGH ALTITUDE CONVERSION KITS

It is very important to choose the correct kit and/or gas orifices for

the altitude and the type of gas for which the furnace is being

installed.

Only use natural gas in furnaces designed for natural gas. Only use

propane (LP) gas for furnaces that have been properly converted to

use propane (LP) gas. Do not use this furnace with butane gas.

Incorrect gas orifices or a furnace that has been improperly con-

verted will create an extremely dangerous condition resulting in pre-

mature heat exchanger failure, excessive sooting, high levels of

carbon monoxide, personal injury, property damage, a fire hazard

and/or death.

High altitude and propane (LP) conversions are required in order

for the appliance to satisfactory meet the application.

An authorized distributor or dealer must make all gas conversions.

In Canada, a certified conversion station or other qualified agency,

using factory specified and/or approved parts, must perform the

conversion.

The installer must take every precaution to insure that the furnace

has been converted to the proper gas orifice size when the furnace

is installed. Do not attempt to drill out any orifices to obtain the

proper orifice size. Drilling out a gas orifice will cause misallgnment

of the burner flames, causing premature heat exchanger burnout,

high levels of carbon monoxide, excessive sooting, a fire hazard,

personal injury, property damage and/or death.

TABLE 7: High Altitude Conversion

Type Orifice at 2,000 ft. 3,000 ft. 4,000 ft. 5,000 ft.

Of Gas Sea Level (610 m) (914m) (1219 m) (1624 m)

Natural #42 #42 #43 #43 #43

Propane #54 #54 #55 #55 #55

Type 6,000 ft. 7,000 ft. 8,000 ft. 9,000 ft. 10,000 ft.

Of Gas (1829 m) (2134 m) (2438 m) (2743 m) (3048 m)

Natural #44 #44 #45 #46 #47

Propane #55 #55 #56 #56 #56

SECTION V: ELECTRICAL POWER

Electrical Power Connections

Field wiring to the unit must be grounded. Electric wires that are field

installed shall conform to the temperature limitation for 63°F (35°C) rise

wire when installed in accordance with instructions. Refer to Table 8 in

these instructions for specific furnace electrical data.

A. CAUTIONI

Use copper conductors only.

TABLE 8: Ratings & Physical / Electrical Data - Upflow Models

Input

MBH kW

75 22.0

100 29.3

Input

MBH kW

75 22.0

100 29.3

Output

MBH kW

60 17.6

80 23.4

Max. Outlet

Air Temp

°F °C

!65 73.9

160 7! .1

!70 76.7

Nominal

CFM cmm

1200 34.0

1600 45.3

Blower

Hp Amps

!/3 6.2

1/2 6.2

!/2 7.0

Cabinet Width Air Temp. Rise

In. cm AFUE °F °C

16 7/8 44.45 80.0 35-65 19.4-36.1

20 53.34 80.0 30-60 16.7-33.3

20 53.34 80.0 40-70 22.2-38.9

Blower Total Max Over-current Min.

Size Unit Size (awg) @ 76 ft. Wire

In. cm amps protect one way

10x8 25.4 x 20.3 6.7 15 14

10x!0 25.4 x 25.4 8.5 15 14

Wire size and over current protection must comply with the National Electrical Code (NFPA-70-1atest edition) and all locaI codes.

AFUE 80%.

Operation Operation

WGT. WGT.

LBS Kg

1!6 53.5

129 58.5

135 61.2

SUPPLY VOLTAGE CONNECTIONS

1. Provide a power supply separate from all other circuits. Install

overcurrent protection and disconnect switch per local/national

electrical codes. The switch should be close to the unit for conve-

nience in servicing. With the disconnect or fused switch in the OFF

position, check all wiring against the unit wiring label. Refer to the

wiring diagram in this instruction.

2. Remove the screws retaining the wiring box cover. Route the

power wiring through the opening in the unit into the junction box

with a conduit connector or other proper connection. In the junc-

tion box there will be three wires (a Black Wire, a White Wire and a

Green Wire). Connect the power supply as shown on the unit-wir-

ing label on the inside of the blower compartment door or the wir-

ing schematic in this section. The black furnace lead must be

connected to the L1 (hot) wire from the power supply. The white

furnace lead must be connected to neutral. Connect the green fur-

nace lead (equipment ground) to the power supply ground. An

alternate wiring method is to use a field provided 2" (5.1 cm) x 4"

(10.2 cm) box and cover on the outside of the furnace. Route the

furnace leads into the box using a protective bushing where the

wires pass through the furnace panel. After making the wiring con-

nections replace the wiring box cover and screws. Refer to Figure

12.

3. The furnace's control system requires correct polarity of the power

supply and a proper ground connection. Refer to Figure 12.

B ._ BL_O_]

_WHT (NEUTRAL) j, NOMINAL120VOLT

GRN _..GRN

FIGURE 12: Line Wiring Connections

IMPORTANT: The power connection leads and wiring box may be relo-

cated to the left side of the furnace. Remove the screws and cut wire tie

holding excess wiring. Reposition on the left side of the furnace and fas-

ten using holes provided.

LOW VOLTAGE CONTROL WIRING CONNECTIONS

Install the field-supplied thermostat by following the instructions that

come with the thermostat. With the thermostat set in the OFF position

and the main electrical source disconnected, connect the thermostat

wiring from the wiring connections on the thermostat to the terminal

board on the ignition module, as shown in Figure 13. Electronic thermo-

stats may require the common wire to be connected as shown with the

dashed line in Figure 13. Apply strain relief to thermostat wires passing

through cabinet. If air conditioning equipment is installed, use thermo-

stat wiring to connect the Y and C terminals on the furnace control

board to the yellow and brown wires on the condensing unit (unit out-

side). Refer to Figure 13.

Unitary Products Group 11