LAARS EDN Series - Installation, Operation and Maintenance Instructions - Manual (Page 18)

Page 18 LAARS HEATING SYSTEMS
can be connected to the grounding screw in the
box or on the switch.
2. For single zone installations: (If external pump is
required, e.g., because of large system pressure
drop) connect room thermostat wires to the red
and white/red wires. Connect circulator (120 volt,
5 amps maximum) between the blue wire and the
white wire (neutral) (see Figure 21).
3. Zone Valves and Thermostats: Install external 24
volt transformer of sufficient V.A. to power
combined load of zone valves. Consult zone
valve manufacturer’s instructions. Connect
circulator (120 volt, 5 amp maximum) between
the blue wire and the white wire (neutral) (see
Figure 22).
4. Multi zone/Multi-relay-circulator Installations:
Multiple circulators must not exceed 5 amps total
when connected to blue wire (see Figure 24).
NOTE: On zone valve systems such as Taco,
Automag and others which do not have isolated (dry)
contact end switches, a single pole isolating relay must
be utilized (see Figure 23).
SECTION 6.
Boiler Start Up
6.1 Common Vent Test
At the time of removal of an existing boiler, the
following steps shall be followed with each appliance
remaining connected to the common venting system
placed in operation, while the other appliances
remaining connected to the common venting system
are not in operation.
1.
Seal any unused opening in the common venting
system.
2. Visually inspect the venting system for proper
size and horizontal pitch and determine there is
no blockage or restriction, leakage, corrosion and
other deficiencies which could cause an unsafe
condition.
3. Insofar as is practical, close all building doors
and windows and all doors between the space in
which the appliances remaining connected to the
common venting system are located and other
spaces of the building. Turn on clothes dryers
and any appliance not connected to the common
venting system. Turn on any exhaust fans, such
as range hoods and bathroom exhausts, so they
will operate at maximum speed. Do not operate a
summer exhaust fan. Close fireplace dampers.
4. Place in operation the appliance being inspected.
Follow the lighting instructions. Adjust
thermostat so appliance will operate
continuously.
5. Test for spillage at the draft hood relief opening
after 5 minutes of main burner operation. Use the
flame of a match or candle, or smoke from a
cigarette, cigar or pipe.
6. After it has been determined that each appliance
remaining connected to the common venting
system properly vents, when tested as outlined
above, return doors, windows, exhaust fans,
fireplace dampers and any other gas burning
appliance to their previous conditions of use.
7. Any improper operation of the common venting
system should be corrected so the installation
conforms with the
a.
National Fuel Gas Code, ANSI Z223.1
latest edition.
b. Can / CGA - B149.
When re-sizing any portion of the common
venting system, the common venting system should be
re-sized to approach the minimum size as determined
using the appropriate tables in Appendix F in the
National Fuel Gas code, ANSI Z223.1 - latest edition,
and/or Can/CSA B149 Installation Codes.
6.1 Common Vent Test
Au moment du retrait d’une chaudière existante,
les mesures suivantes doivent être prises pour chaque
appareil toujours raccordé au système d’evacuation
commun et qui fonctionne alors que d’autres appareils
toujours raccordés au système d’évacuation ne
fonctionnent pas:
1.
Sceller toutes les ouvertures non utilisées du
système d’évacuation.
2. Inspecter de façon visuelle le système
d’évacuation pour déterminer la grosseur et
l’inclinaison horiztonale qui conviennent et
s’assurer que le système est exempt
d’obstruction, d’étranglement, de fuite, de
corrosion et autres défaillances qui pourraient
présenter des risques.
3. Dans la mesure du possible, fermer toutes les
portes et les fenêtres du bâtiment et toutes les
portes entre l’espace, où les appareils tojours
raccordés et les autres espaces du bâtiment.
Mettre en marche les sécheuses, tous les
appareils non raccordés au système d’évacuation
commun et tous les ventilateurs d’extraction
comme les hottes de cuisinère et les ventilateurs
des salles de bain. S’assurer que ces ventilateurs
fonctionnent à la vitesse maximale, Ne pas faire
fonctionner les ventilateurs d’été. Fermer les
registres des cheminées.
4. Mettre l’appareil inspecté en marche. Suivre les
instructions d’allumage. Régler le thermostat de
façon continue.
5. Faire fonctionner le brûleur principal pendant 5
min ensuite déterminer si le coupe-tirage déborde
à l’ouverture de décharge. Utiliser la flamme