StyleCrest Installation Manual

16
Leak Check
WARNING:
FIRE OR EXPLOSION HAZARD
Failure to follow safety warnings exactly could
result in serious injury or property damage.
Never test for gas leaks with an open flame.
Use a commercially available soap solution
made specifically for the detection of leaks
to check all connections. A fire or explosion
may result causing property damage, personal
injury or loss of life.
AVERTISSEMENT :
RISQUE D’INCENDIE OU D’EXPLOSION
Le non-respect des avertissements de sécurité pourrait
entraîner des blessures graves ou des dommages
matériels importants.
N’effectuez jamais d’essai d’étanchéité des gaz avec une
flamme nue. Utilisez une solution savonneuse offerte sur
le marché conçue spécialement pour la détection des
fuites pour vérifier tous les raccordements. Un incendie ou
une explosion pourrait survenir et causer des dommages
matériels, des blessures ou des pertes de vie.
After the gas piping to the furnace is complete, all
connections must be tested for gas leaks. This includes all
fittings, pipe connections at the main gas valve, emergency
shutoff valve, and flexible gas connectors (if applicable).
The soap and water solution can be applied on each
joint or union using a small paintbrush. If any bubbling is
observed, the connection is not sealed adequately and
must be retightened. Repeat the tightening and soap
check process until bubbling ceases.
CAUTION:
When pressure testing gas supply lines at
pressures greater than 1/2 psig (14 inch W.C.), the
gas supply piping system must be disconnected
from the furnace to prevent damage to the gas
control valve. If the test pressure is less than or
equal to 1/2 psig (14 inch W.C.), close the manual
shut-off valve
Flue Gas Sampling
It may be necessary to take flue gas sampling in order
to check the performance after furnace installation. A
flue gas sample may be taken from the heat exchanger,
which is located behind the hole of the top-front of blower
compartment.
1. Turn off all electric power to the appliance.
2. Remove the black plastic cap located above the blower.
Do not discard cap.
3. Drill a hole through the top of the blower compartment.
NOTE: Hole diameter should be same size as sampling
tube.
4. Insert sampling tube through the drilled hole and into
the heat exchanger.
5. After a complete check and adjustment of furnace
performance, seal the drilled hole with a screw larger
than the hole. NOTE: Seal the screw threads with silicon
sealant - rated at least 500° F.
6. Plug the outside hole with the plastic cap removed in
step 3.
High Altitude Conversion
WARNING:
The reduction of input rating necessary for high
altitude installation may only be accomplished
with factory supplied orifices. Do not attempt to
drill out orifices in the field. Improperly drilled
orifices may cause fire, explosion, carbon
monoxide poisoning, personal injury or death.
High altitude conversion with this furnace depends on
the installation altitude and the heating value of the gas.
The installation of this furnace at altitudes above 2,000
feet must meet the requirements of the National Fuel Gas
Table 6. MG1 Furnace Specifications - Factory Settings
FURNACE
MODEL #
INPUT
MBTU/H
OUTPUT
MBTU/H
ORIFICE NO
E.S.P.
IN WC
IGNITOR
DIRECT
COMB.
BLOWER
MOTOR
HP
A/C READY
TONS
NAT. LP
MG1E-056 56 46 29 45 0.3 Y Y 3/4 4
MG1E-070 70 57 24 42 0.3 Y Y 3/4 4
MG1E-077 77 62 21 40 0.3 Y Y 3/4 4
MG1E-090 85 68 17 36 0.3 Y Y 3/4 4
NOTES:
• Electrical Supply: 120 volts, 60HZ, 1 Ph. Fuse or
Breaker - 15 amps
• Temperature Rise: 45° F to 75° F
• High Altitude for US and Canadian installations:
See High Altitude section on page 16.
• Thermostat Circuit: 24 volts, 60HZ, 30 vac
• Normal Anticipator Setting: 0.4
• Manifold Pressure for Natural Gas: 3.5” w.c.
• Manifold Pressure for LP Gas: 10” w.c.