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Raypak 0030B User Manual

Page 34

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12. 2-Stage Controller (Models 90, 135 & 180)

a) Shut-off electrical power to the boiler.
b) Remove control cover screws and open con-

trol compartment.

c) The control is factory set at 160°F. To adjust

to another setting, use a small screw driver
and turn dial clockwise

to lower the

temperature or counter-clockwise

to

raise the setting.

d) To replace the stage controller, disconnect

the wiring connections.

e) Remove screws (2) holding the staged

controller.

f)

Remove upper access panel.

g) Remove the wedge or retaining clip holding

the sensing bulb in the control well in the in/
out header.

h) Pull out the sensing bulb carefully from the

control well.

i)

Remove the stage control with capillary from
unit.

j)

Reverse above procedure to re-install.

6. REPLACEMENT PARTS LIST

NOTE: To supply the correct part it is important that you
supply the model number, serial number and type of gas
when applicable.

Any part returned for replacement under standard

company warranties must be properly tagged with
RAYPAK return parts tag, completely filled in with the
heater serial number, model number etc., and shipped
to Raypak freight prepaid.

If determined defective by Raypak and within war-

ranty, the part will be returned in kind or equal substitu-
tion, freight collect. Credit will not be issued.

RAYPAK, INC.

2151 Eastman Avenue

Oxnard, CA 93030

34

9. Fast-Response Temperature Sensor Module

Replacement
a) Shut-off electrical power to the boiler.
b) Remove control cover screws and open

control compartment.

c) Disconnect wiring to the board.
d) Carefully pull out the control board from the

nylon pin supports.

e) Reverse above procedure to re-install.

10. Fast-Response Temperature Sensor Probe

Replacement
a) Shut-off electrical power to the boiler.
b) Shut-off water supply to the boiler and open

drain valve to remove water to the sensor
probe level.

c) Remove control cover screws and open

control compartment.

d) Disconnect wire leads from control board.
e) Remove upper access panel.
f) Remove sensor probe from in/out header.
g) Reverse above procedure to re-install.

11. Circulator Replacement

a) Shut-off electrical power to the boiler.
b) Shut-off water supply and open drain valve

to remove water in the piping at the pump
level.

CAUTION: To avoid damage to electrical components
keep water from getting into the control compartments
and gas valve.

c) Disconnect wiring and conduit connections to

the pump.

d) Disconnect the bypass tube connections to

the inlet flange.

e) Remove the nuts and bolts at the inlet and

outlet flanges. Remove old gaskets.

f) Remove the pump.
g) Reverse the above procedure to re-install.

Use new gaskets and make sure they are
seated properly when tightening the nuts
and bolts.

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