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01-10-98
3.
To remove the manual reset high limit, follow the
procedure for the high limit thermostat but in
addition, disconnect the electrical connections
and release its mounting bracket from the side
panel by removing the M4 nut at the front of the
bracket. The thermostat can then be removed
from its bracket. Ensure thermostat phial is
correctly located in its pocket.
4.
Reverse above procedure to reinstall.
185, 265 & 405 Models
MANUAL RESET HIGH LIMIT REMOVAL
1.
Shut off main electrical power switch to
heater.
2.
Remove inspection panels.
3.
Disconnect electrical connections from
thermostat.
4.
Remove defective high limit and replace
with a new high limit. Secure bulb in
pocket with chip provided.
5.
Reverse above procedure to reinstall.
HIGH LIMIT REMOVAL (A.G.S.)
1.
Shut off main electrical power
switch to heater.
2.
Remove inspection panels.
3.
Drain heater.
4.
Remove defective high limit
and replace with a new high limit.
5.
Reverse above procedure to reinstall.
All Models
PILOT SAFETY IGNITION
The heater employs a pilot safety which closes the
main gas valve within 8/10ths of a second whenever
the pilot flame is interrupted. Pilot flame is automati-
cally lit when the device is powered. Unit performs its
own safety check and opens the main valve only after
the pilot is proven to be lit.
BURNER DRAWER REMOVAL
1.
Shut off main electrical power switch to
heater.
2.
Shut off gas upstream of heater.
3.
Remove front door.
4.
Disconnect gas line from gas valve.
5.
Remove (2) screws that mount burner tray to
unit.
6.
Disconnect wires that terminate at gas valve.
7.
Slide out burner tray.
8.
Reverse above procedure to re-install.
NOTE
:-
IMPORTANT Reconnect Earth Connection
055, 105 & 155 Models
GAS VALVE REMOVAL
1.
Remove burner tray. (See burner drawer
removal procedure).
2.
Disconnect pilot tubing from gas valve.
3.
Remove gas valve with manifold from burner
tray.
4.
Remove manifold from gas valve.
5.
Reverse above procedure to re-install.
185, 265 & 405 Models
GAS VALVE REMOVAL
1.
Shut off gas supply to the heater. Remove
gas piping to gas valve inlet.
2.
Disconnect wires, pilot tubing and bleed
line, if required.
3.
Turn vertical gas pipe from manifold
slightly and unscrew gas valve.
4.
Reverse above procedure to re-install.
All Models
MAIN BURNER AND INJECTOR REMOVAL
1.
Remove burner drawer. See burner
drawer removal procedure.
2.
Remove screws and burner hold down
bracket.
NOTE:
If the heat exchanger is sooted badly, the
burner hold down bracket and spacer can become
distorted from direct flame impingement and this
usually necessitates replacement of these parts.
3.
Lift burners from slotted spacers and slide
from orifices. Clean with a wire brush.
4.
Orifices usually do not need to be
replaced. To clean, run either copper wire
or a drill shank through orifice. Do not
enlarge hole. To remove orifice, use a
socket wrench and remove from manifold.
DO NOT
overtighten when reinstalling.
055, 105 & 155 Models
PILOT REMOVAL AND CLEANING
1.
Remove burner drawer. (See burner drawer
removal procedure).
2.
Disconnect pilot tubing, disconnect wires
from gas valve.
3.
Disconnect pilot bracket from burner shield.
4.
Remove pilot from bracket.
5.
Remove pilot orifice, and clean with wire or
small brush.
CAUTION! DO NOT
enlarge
hole in pilot orifice.
6.
Reverse above procedure to re-install.
