Cambridge Air Solutions.
36
M-Series Technical Manual
12. FINAL HEATER PREPARATION
a. Turn the disconnect switch off.
b. Set the Entering Air Thermostat (EAT) to
the specified temperature setting. Refer
to the Individual Component Description
Section for additional information
(page 94).
c.1. For units with an A1044 amplifier: Set
the “MIN” and “MAX” setting of the
amplifier to the application specifications.
c.2. For units with an SC25S signal
conditioner: Set the Min DA (Discharge
Air) and Max DA settings to the
application specifications.
d. For adjustment of the Clogged Filter
Switch, refer to the procedure that is
provided with this manual.
e. Verify the blower and burner service
switches are in the
“
REMOTE
”
position.
f. Return the Technical Manual and Wiring
Diagram to the manual holder.
g. Perform a visual inspection of all wiring and
gas valve plugs to ensure they have been
properly replaced.
h. Replace and fasten all covers and panels.
Turn the disconnect switch on.
13. REMOTE CONTROL STATION
OPERATIONAL CHECK
a. Identify the type of Remote Control
Station, if applicable, that is utilized on
this application. Refer to Individual
Component Description Section for
additional information (page 89).
b. Turn the blower and burner service
switches to the “REMOTE” position and, if
applicable, turn the Remote Control Station
mode selector switch to the “HEATING”
position.
c.1. If the Remote Control Station utilizes
a thermostat, refer to the Operating
Instructions for the Electronic Thermostat
(page 45) or the TSS Controller (page 47)
to set the thermostat at its highest setting.
c.2. If another device in the Remote Control
Station controls the operation of the heater,
activate this device.
c.3. If the make-up air heater is not equipped
with a Remote Control Station, activate
that part of the control system which will
initiate the blower and burner operation.
d. After a short delay for damper operation,
the blower should operate, followed by
burner ignition after a delay for prepurge
and igniter warm-up.
e. Adjust the applicable temperature control
and verify the heater output changes. See
page 88.
f. Reset the thermostat, if applicable, and
the temperature control to the desired
temperature.
g. Turn the mode selector switch to the
“SUMMER VENTILATION” position.
Verify the blower operates.
SHUT-DOWN INSTRUCTIONS
1. Turn the mode selector switch of the
Remote Control Station to the “OFF”
position.
2. Turn the service disconnect switch off.
3. Turn the blower and burner service
switches to the “OFF” position.
4. Close the supply gas cock.
5. Turn off the electric supply to the heater.
IMPORTANT
If you need technical assistance, call the Cambridge
Air Solutions Customer Service Group at 800-473-4569
during the hours of 8:00 a.m. to 5:00 p.m. Central Time,
Monday through Friday.
