Table of Contents
Advertisement
The furnace and its gas control must be disconnected from
gas supply piping system at ground joint union during any
pressure testing of the system at test pressures greater
than 1/2 psi (14 inches W.C.).
The furnace must be isolated from gas supply piping
system by turning off equipment shut-off valve during any
pressure testing of the system at test pressures equal to or
less than 1/2 psi (14 inches W.C.).
WARNING: When test pressure is above 1/2 psi
(14 inches W.C.), completely disconnect furnace and gas
control from gas supply line. Failure to isolate furnace and
gas control from test pressure could damage them, causing
gas to leak, resulting in fire or explosion.
Use a commercial soap solution made to detect leaks and
check all gas piping connections. Bubbles indicate gas
leakage. Seal all leaks before proceeding.
SECTION 7. INSTALLING
ELECTRICAL WIRING
CAUTION: Label all wires prior to disconnection when
servicing controls. Wiring errors can cause improper and
dangerous operation. When replacing original wire, use
same type, color, and size wire. Remember to renumber
wire ends. Verify proper operation after servicing.
115 VOLT WIRING
Wire furnace according to the Field Wiring Diagram shown
in Figure 25, local codes, and current National Electrical
Code ANSI/NFPA 70 or Canadian Electrical Code CSA
C22.1. Also, see Furnace Wiring Diagram in Figure 26.
Install proper electrical grounding by attaching grounding
source to green wire in furnace junction box. Follow local
codes or in the absence of local codes, the current National
Electrical Code ANSI/NFPA 70 or Canadian Electrical Code
CSA C22.1.
WARNING: Failure to provide a proper electrical
ground could result in electric shock or fire.
Provide furnace with its own separate electrical circuit and
means of circuit protection.
electrical disconnect switch located at furnace.
WARNING: Failure to provide the above shut-off
means could result in electrical shock or fire.
Page 20
Furnace must have an
Figure 25. Field Wiring Diagram.
Use electrical wiring that meets current National Electrical
Code ANSI/NFPA 70 or Canadian Electrical Code CSA
C22.1 and local codes. Use Type T (63 degrees C rise)
wire or equivalent.
24 VOLT WIRING
Select a location for room thermostat on a draft-free interior
wall that is away from supply and return air registers, lights,
television, direct sunlight, or other heat sources.
Install thermostat following field-wiring diagram in Figure 25
and thermostat manufacturer's instructions. Thermostat
wire should be 18 AWG wire for best results.
NOTE: For proper cooling operation, "Y" wire must be
connected to Fan Timer.
speed blower operation.
Set the thermostat's heat anticipator following instructions
provided with thermostat.
anticipator current of approximately 0.4 amps.
CAUTION: 24 VAC accessories that draw power from the
furnace's transformer should not be installed on this
furnace. Addition of such accessories may cause improper
furnace operation and limit transformer life.
"Y" wire controls cooling
This furnace will have heat
Installer's Information Manual
Advertisement
Table of Contents
