3
MOUNTING AND WIRING
All wiring should be installed by a qualified heating and air
conditioning contractor or licensed electrician, according to
local and national electrical codes and ordinances.
The control must be secured to an area that will experience a
minimum of vibration and remain below the maximum ambient
temperature rating of 176°F. The control is approved for
minimum ambient temperatures of -40°F.
When mounting the control, any orientation is acceptable.
Refer to the wiring diagram and wiring table when connecting
the 50M56-743 control to other components of the system.
UL approved, 105°C rated 18 gauge, stranded, 2/64” thick
insulation wire is recommended for all low voltage safety circuit
connections.
UL approved 105°C rated 16 gauge min., stranded, 4/64”
thick insulation wire is recommended for all line voltage
connections.
After installation or replacement, follow appliance manufacturer’s
recommended installation or service instructions to ensure
proper operation.
Do not short out terminals on gas valve or primary
control. Short or incorrect wiring may damage the
thermostat.
CAUTION
!
WARNING
!
FIRE HAZARD
• Do not exceed the specified voltage.
• Replace existing control with exact model and
dash number.
• Protect the control from direct contact with water
(dripping, spraying, rain, etc.).
• If the control has been in direct contact with
water, replace the control.
• Label all wires before disconnection when serv
-
icing controls. Wiring errors can cause improper
and dangerous operation.
• Route and secure wiring away from flame.
SHOCK HAZARD
• Disconnect electric power before servicing.
• Ensure proper earth grounding of appliance.
• Ensure proper connection of line neutral and line
hot wires.
EXPLOSION HAZARD
• Shut off main gas to appliance until installation
is complete.
INSTALLATION
