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TOP VIEW OF VALVE
PRESSURE REGULATOR
OUTLET PRESSURE TAP
GAS OUTLET
PILOT GAS OUTLET
PILOT ADJUSTMENT
SCREW BENEATH
COVER SCREW
MANUAL GAS COCK KNOB
RED RESET BUTTON
INLET PRESSURE TAP
GAS INLET
WRENCH BOSS
VENT
Checking Manifold Pressure
Both Propane and Natural Gas valves have a built-in pressure reg-
ulator in the gas valve. Natural Gas models will have a manifold
pressure of approximately 4.0” w.c. (.996kPa) at the valve outlet
with the inlet pressure to the valve from a minimum of 5.0” w.c.
(1.245kPa) for the purpose of input adjustment to a maximum of
7.0” w.c. (1.743kPa). Propane Gas models will have a manifold
pressure approximately 10.0” w.c. (2.49kPa) at the valve outlet
with the inlet pressure to the valve from a minimum of 11.0” w.c.
(2.739kPa) for the purpose of input adjustment to a maximum of
13.0” w.c. (3.237kPa).
A 1/8” N.P.T. plugged tapping, accessible for test gauge connec-
tion, 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.
Figure 3
CLEARANCES
Pressure Testing Of The Gas Supply System
1. In selecting a location for installation, it is necessary to provide
adequate accessibility clearances for servicing and proper in-
stallation. A front clearance of 36” (91.4cm) is recommended.
Do not block outlet or inlet air openings on the front grill.
2. The DVC-35 minimum wall depth is 3/4” (19mm) and maximum
wall depth is 10” (254mm). The use of tubes not supplied by
the manufacturer results in unsatisfactory performance.
3. The DVC-35 can be attached to the wall or recessed into
the wall up to 9 1/2” (241mm) in depth but the minimum 3/4”
(19mm) vent/air intake system wall depth must be maintained.
Example: If furnace is recessed into the wall at a depth of 9 1/2”
(241mm), the minimum wall depth must be 10 1/4” (260mm).
4. The wall in which the furnace is recessed has (0) zero clear-
ance 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” (102mm).
7. Ceiling clearance is 4” (201mm).
8. Floor and rear wall clearance is (0) zero inches.
9. Clearance of 18” (457mm) is required to sidewall or combus-
tible 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 12” (305mm).
Figure 4
The vent terminal of this direct vent appliance shall be located
at least 9” (229mm) 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” (305mm) above grade. See
vent location,
Figure 4.
WARNING
The nearest point of the vent cap should be a minimum
horizontal distance of six (6) feet (1.83m) from any pressure
regulator. In case of regulator malfunction, the six (6) feet
(1.83m) distance will reduce the chance of gas entering the
vent cap.
GAS SUPPLY (CONT’D)
