507827-01
Issue 1813
Page 1 of 4
Save these instructions for future reference
INSTALLATION INSTRUCTIONS
Twinning Kit 16W72
For Single and Two Stage Gas-Fired Furnaces with Constant
Torque Blower Motors
This manual must be left with the homeowner for future reference.
This is a safety alert symbol and should never be ignored. When you see this symbol on labels or in
manuals, be alert to the potential for personal injury or death.
(P) 507827-01
*P507827-01*
WARNING
Improper installation, adjustment, service, or maintenance
can cause property damage, personal injury, or death.
Consult a qualified installer, service agency, or the gas
supplier for information or assistance.
CAUTION
Label all wires prior to disconnection when servicing
controls. Wiring errors can cause improper and
dangerous operation.
WARNING
Risk of electrical shock. Disconnect all
remote power supplies before installing
or servicing any portion of the system.
Failure to disconnect power supplies can
result in property damage, personal injury,
or death.
Parts List
Quantity
Part
5
DPST Relay
30
.250 Quick Disconnect Terminal
10
Self-Tapping Screws
1
Installation Instructions
Application
This accessory kit is used to operate two gas-fired furnaces
that are intended to be “twinned together,” meaning
connected in a shared duct system controlled by a single
thermostat.
• Do not twin more than two furnaces at a time.
• Must be installed and wired in accordance with local
codes.
• Used for single-stage heating/single-stage cooling
with a single-stage thermostat.
• Used for two-stage heating/single-stage cooling with
either a single-stage or two-stage thermostat.
