Attention! If one of the above procedures results in pressures in
excess of 1/2 psig (14" w.c.) (3.5 kPa) on the appliance gas valve,
it will result in a hazardous condition.
Clearances
1. In selecting a location for installation, it is necessary to provide
adequate accessibility clearances for servicing and proper
installation.
2. The DVC-55 minimum wall depth is 4-1/2 inches and maximum
wall depth is 13 inches. The use of tubes not supplied by the
manufacturer results in unsatisfactory performance.
3. The DVC-55 can be attached to the wall or recessed into the
wall up to 4 inches in depth but the minimum 4-1/2 inches vent/
air intake system wall depth must be maintained.
Example: If furnace is recessed into the wall at a depth of
4 inches, the minimum wall depth must be 8-1/2 inches.
4. The wall in which the furnace is recessed has (0) zero clearance
to the furnace sides and top.
5. When using side discharge registers, SOR-1 or SOK-1, the
furnace cannot be recessed into the wall.
6. Clearance to sidewall or combustible material is 4 inches.
7. Ceiling clearance is 4 inches.
8. Floor and rear wall clearance is (0) zero inches.
9. Clearance of 18 inches is required to sidewall or combustible
material when flush mounted SOR-1, side outlet register is
used.
10. The minimum distance from the center of the vent cap to the
nearest outside corner or obstruction is 24 inches.
The vent terminal of a direct vent appliance with an input over 50,000
BTU per hour shall be located at least 12 inches from any opening
through which flue gases could enter a building. The bottom of the
vent terminal and the air intake shall be located at least 12 inches
above grade.
37403-5-0620
GAS SUPPLY (CONT'D)
Figure 3
CLEARANCES
Checking Manifold Pressure
Both Propane and Natural Gas valves have a built-in pressure
regulator in the gas valve. Natural Gas models will have a manifold
pressure of approximately 3.5" w.c. at the valve outlet with the inlet
pressure to the valve from a minimum of 5.0" w.c. for the purpose of
input adjustment to a maximum of 7.0" w.c. Propane Gas models
will have a manifold pressure approximately 10.0" w.c. at the valve
outlet with the inlet pressure to the valve from a minimum of 11.0"
w.c. for the purpose of input adjustment to a maximum of 13.0" w.c.
A 1/8" N.P.T. plugged tapping, accessible for test gauge connection,
is located on the outlet side of the gas control.
The built-in regulator comes on at approximately 1/4th pressure
and full on in 10 seconds.
Safety Lockout
S8600H module provides 100 percent shutoff, or safety
lockout. If the pilot fails to light within 90 seconds, the
control system will shut down. The control system must be
reset by turning off power to the module for one minute.
WARNING: The nearest point of the vent cap should be a
minimum horizontal distant of six (6) feet from any pres-
sure regulator. In case of regulator malfunction, the six
(6) feet distance will reduce the chance of gas entering the
vent cap.
Figure 4
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