Table of Contents
Advertisement
CRV-S
F
C
I
ERIES
UEL
ONVERSION
NSTRUCTIONS
SECTION 7: OPERATION AND MAINTENANCE
DANGER
Electrical Shock Hazard
Disconnect electric
before service.
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 heater is equipped with a direct-spark ignition
system.
7.1 Sequence of Operation
1. Turn the thermostat up. When the thermostat
calls for heat, the pump will start immediately.
After a short period, the burners will begin their
ignition sequence. Sparking will begin at the
electrodes and the gas valve will be energized
45 seconds later.
2. The flame will be sensed by the flame sensing
rod and the electrode is de-energized.
3. If a flame is detected, the gas valve
remains open. When the call for heat is
satisfied, the burner shuts off. On CRV-Series
systems equipped with the optional ROBERTS
CORAYVAC
GORDON
®
CORAYVAC
Modulating Heating Control, the
®
pump will continue operation for a post-purge
period of two minutes.
4. If no flame is detected, the module will close and
a purge period begins. If a flame is not
established, a second purge and warm-up will
take place and then a third trial cycle will begin.
After three trials, the module will lockout for one
hour or until reset.
5. A reset is accomplished by removing power
from the module for at least 5 seconds
(thermostat cycle is required) or automatically
after 1 hour.
7.2 To Shut Off Heater
Set thermostat to lowest setting.
Turn OFF electric power to heater.
16 of 21
Explosion Hazard
Turn off gas supply to
heater before service.
Heating Control, or
®
WARNING
Burn Hazard
Allow heater to cool
before service.
Tubing may still be hot
after operation.
Turn OFF manual gas valve in the heater supply line.
7.3 To Start Heater
Turn gas valve and electric power OFF and wait five
minutes for unburned gases to vent from heater.
Turn ON main gas valve.
Turn ON electric power.
Set thermostat to desired temperature.
Burner should light automatically.
7.4 Pre-Season Maintenance and Annual
Inspection
To ensure your safety and years of trouble-free oper-
ation of the heating system, service and annual
inspections must be done by a contractor qualified in
the installation and service of gas-fired heating
equipment.
Turn off gas and electric supplies before performing
service or maintenance. Allow heater to cool before
servicing.
Before every heating season, a contractor qualified in
the installation and service of gas-fired heating
equipment must perform a thorough safety inspec-
tion of the heater.
For best performance, the gas, electrical, thermostat
connections, tubing, venting, suspensions and over-
all heater condition should be thoroughly inspected.
NOTE: Gas flow and burner ignition are among the
first things that should be inspected.
Please see Page 17 , Section 7 .5 for suggested items
to inspect.
Cut/Pinch Hazard
Wear protective gear
during installation,
operation and service.
Edges are sharp.
Advertisement
Table of Contents
