Raypak RAYTHERM 133, Installation & Operating Instructions Manual

Page: 18 / 52

18
(d) Place in operation the appliance being inspected.
Follow the lighting instructions. Adjust thermostat
so appliance will operate continuously.
(e) Test for spillage at the drafthood relief opening
after 5 minutes of main burner operation. Use the
flame of a match or candle, or smoke from a ciga-
rette, cigar or pipe.
(f) After it has been determined that each appliance
remaining connected to the common venting sys-
tem is venting properly, return doors, windows,
exhaust fans, fireplace dampers and any other
gas burning appliance to their previous conditions
of use.
(g) Any improper operation of the common venting
system should be corrected so that the installation
conforms with the latest edition of the National
Fuel Gas Code, ANSI Z223.1. When re-sizing any
portion of the common venting system, the com-
mon venting system should be re-sized to
approach the minimum size as determined using
the appropriate tables in the National Fuel Gas
Code, ANSI Z223.1.
For special venting applications that require reduced
vent sizes and through-the-wall venting, the Type D
Induced Draft Assembly can be used. Consult the fac-
tory or your local Raypak representative.
Vent Damper Installation
Models 0133 Through 0180
(Where Required)
Location
The vent damper must be located in the vent so that it
serves only the appliance for which it is intended.
If improperly installed, a hazardous condition, such as
an explosion or carbon monoxide poisoning, could
result. Make certain that it is mounted in an accessible
location at least 6 in. from any combustible material or
the heat exchanger and that the position indicator is in
a visible location.
The vent damper must be installed after the appliance
drafthood, as close to the drafthood as practicable,
and without modification of the drafthood.
Mounting
On vertical vents, the vent damper may be mounted
with the actuator in any position. On horizontal vents,
do not mount the actuator either directly above or
directly below the vent pipe; mount the vent damper
actuator to the side of the vent, as shown in Fig. 16.
The vent damper is set up for a continuous pilot sys-
tem. If the vent damper is installed on an Intermittent
Pilot or Direct Spark Ignition equipped system, the
energy savings of the vent damper can be improved
by plugging the hole in the vent damper blade using
the knockout plug, Part No. 105612R, provided in the
parts envelope.
DO NOT plug the hole if installing the vent damper on
a continuous pilot system as this will create a haz-
ardous condition.
WARNING:
Do not use thermally actuated vent
dampers on modulating heater. To do so, may result
in asphyxiation. Use only a mechanically actuated
vent damper device that is electrically interlocked
with the modulating heater operation.
Fig. 15: Vent Damper
appliance not connected to the common venting
system. Turn on any exhaust fans, such as range
hoods and bathroom exhausts, so they will oper-
ate at maximum speed. Do not operate a summer
exhaust fan. Close fireplace dampers.