Manual

TANKLESS HEATER COIL
INSTALLATION INSTRUCTIONS
Kit # 550002988
When using tankless coil, boiler is congured so boiler
control (either Honewell L7248L or Hydrolevel 3250)
operates in conjunction with Honeywell L4006A low limit
control mounted on well in tankless heater cover plate
WARNING
Electrical shock hazard. Turn OFF electrical power
supply at service panel.
!
WARNING
Burn hazard. Verify heat exchanger has cooled
or use appropriate personal protection equipment
before servicing.
!
1. Unpack coil, gasket, low limit control, control well, and
wiring harness.
2. Drain boiler and system, if necessary.
3. Remove jacket cover panel (if provided) on right side
jacket.
4. Remove 10 screws holding coil opening cover plate and
discard.
5. Remove cover plate and gasket and discard.
6. Install ten (10) 3/8"-16 x 1½" studs into bolt holes in
preparation for installing tankless coil.
7. Place new gasket over coil and up against inside face
plate. Insert coil into boiler opening. Verify arrow
stamped in the face plate points upward and the word
“TOP” (if shown) is at the top. Install ten (10) 3/8" -
16 hex nuts. Tighten evenly and snugly in crisscross
pattern. Do not exert extreme pressure and snap the
bolts.
P/N 240010786 Rev. A [07/2014]
Kit installation shall be completed by qualied agency.
WARNING
Fire, explosion, asphyxiation and electrical shock
hazard. Improper installation could result in
death or serious injury. Read this instruction
and understand all requirements, including
requirements of authority having jurisdiction, before
beginning installation. Installation not complete
until appliance operation veried per Installation,
Operation & Maintenance Manual provided with
boiler.
!
NOTICE
Do not use a tankless coil if your water is
excessively hard with lime or other deposits which
will accumulate inside the coil.
Figure 1
Figure 2