Pentair Max-E-Therm User Manual

MAX-E-THERM® HEATER

MANIFOLD REPLACEMENT INSTRUCTIONS

HEATER KITS

• 200K Manifold Kit No. 77707-0014

• 333K Manifold Kit No. 77707-0015

• 400K Manifold Kit No. 77707-0016

• Connector Tube Kit No. 77707-0017

• O-Ring No. U9-226

SAFTY PRECAUTIONS

Fire or explosion hazard. Disconnect all power to the

heater and close the External Manual Gas Valve before

starting this procedure.

Compressed spring hazard. The Thermal Regulator plug

has a spring behind it. Restrain it when removing it from the

Manifold to prevent it from flying and possibly injuring

persons nearby (see Picture No. 9, Page 3).

2

Inlet from

Filter

3873 0101

1

Filter

Pump

Heater

3871 0101

Turn off the power to the
heater and the filter pump.

2 3

Outlet to

Pool

Close the gas valve. If it is
necessary to move the heater,
disconnect the union.

3872 0101

Close water inlet and outlet valves to
isolate the heater from the system.

4 5 6

Loosen the union collars.

Drain the Heater.

Max-E-Therm Heater Manifold Replacement Instructions

When the heater is empty,
disconnect the unions.

Separate and remove the covers.

Max-E-Therm Heater Manifold Replacement Instructions

7 8

Remove the switch covers and disconnect the
wires from the safety switches. The wires are
color coded and marked for the switches they
are connected to.

3

Carefully remove the spring-loaded
thermal regulator.

9

Carefully remove the MANIFOLD
and ADAPTER.

10

1. Clean the tube sheet and
O-ring sealing surface with
a nylon brush, then brighten
the tube sheet surface with
320 grit emery cloth. NOTE:
When cleaning, be careful
not to push the tube sheet
into the combustion chamber.
If you do, thread a couple of
bolts into it and pull it back in
place.

2. Brush off all dust and debris
with a brush and wipe it
down with a cloth.

3. Apply silicone grease
(supplied) to O-Rings.