Section 7: Operation And Maintenance; Checking The Gas Line; Unitary Heater Sequence Of Operation - Roberts Gorden Vantage CTHN-40 Kit Instructions

VANTAGE ® NP F C I
UEL ONVERSION NSTRUCTIONS

SECTION 7: OPERATION AND MAINTENANCE

DANGER
Electrical Shock Hazard
Disconnect electric
before service.
More than one
disconnect switch may
be required to
disconnect electric from
heater.
Heater must be
connected to a properly
grounded electrical
source.
Failure to follow these instructions can result in death, electric shock, injury or property damage.
The CTHN-Series heater is equipped with a direct
spark ignition system.

7.1 Checking the Gas Line

1. Open main valve and verify that no gas is
flowing through the gas meter.
2. Purge the line if this was not done following
pressure testing with air.
3. Verify that the gas pressure is not above 14" wc
(1/2 PSIG)
4. Close main gas valve.

7.2 Unitary Heater Sequence of Operation

1. Turn the thermostat up. When the thermostat
calls for heat, the blower motor will energize.
2. When the fan motor achieves normal running
RPM, the pressure switch within the burner
closes and energizes the ignition module.
3. After a 45 second pre-purge, the ignition module
then opens the gas valve and energizes the
electrode. When the flame is established, the
sparking sequence ceases.
4. If the flame is not established during the ignition
sequence, the ignition module closes the gas
valve and purge begins. The ignition module will
18
Explosion Hazard
Turn off gas supply to
heater before service.
WARNING
Burn Hazard
Allow heater to cool
before service.
Tubing may still be hot
after operation.
try 2 additional times for ignition (with purge
between). If ignition is not established, the
module will lock-out.
NOTE: After 1 hour, the module will reset
automatically and return to steps 3 and 4.
5. If a flame is detected, the gas valve remains
open. When the call for heat is satisfied, the
thermostat turns off the burner and fan power
supply.
6. If the flame extinguishes during operation, the
ignition module will attempt to re-establish the
flame as described in the preceding step. If
ignition is not re-established, the module will
lock-out.
7. After lock-out, the control must be reset by
turning down the thermostat for five seconds,
then raising it again to the desired temperature,
or by disconnecting and re-connecting power to
the control.
7.2.1 To Shut Off Heater - Unitary
Set thermostat to lowest setting.
Turn OFF electric power to heater.
Turn OFF manual gas valve in the heater supply line.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Edges are sharp.