Install Instructions

2
OFF
ON
STEP 1 - Removal and Replacement of Contacts and Terminal Panels
a. Turn power off to boiler and all controls.
Allow boiler to cool to 80˚F (27˚C) and
reduce the pressure to 0 psi (0 bar).
TOWER TUBE
SWITCH
ASSEMBLY
TERMINAL
CONNECTIONS
SWITCH
COVER
TERMINAL
PANELS
CONDUIT
CONNECTOR
NAMEPLATE
FITTING
HUB
C
A
b. Remove and Replace Switch Assembly
• Remove two screws (A) and lift off
switch cover.
• Identify terminal connections for
rewiring and then disconnect all wires
from terminal panels.
• Remove conduit connector and wires
from the integral fitting hub.
• Remove four hex nuts (B) and carefully
lift switch assembly up and off
tower tube.
• Carefully slide new switch assembly
over tower tube and secure with four
hex nuts (B). Make sure nameplate is
in same position as old unit.
• Remove two screws (A) and lift switch
cover off new unit.
• Install conduit fitting from old unit
with attached wires on switch assembly.
• Reconnect wiring to terminal panel in
exactly the same position as removed.
• Replace switch cover and fasten with
two screws (A).
Proceed to Step 2 to Test Control
There may be more than one source of power to
the boiler.
!
CAUTION