Manifold Pressure -
Low 4.0 IWC; High 5.0 IWC for Natural
- Low 7.0 IWC; High 10.3 IWC for Propane
Total Gas Amount
** - 61,000 BTUH @ 100% High Fire
Manifold pressure is measured by a pressure gauge on the outlet side of the Honeywell gas valve. With
the unit on for at least twenty minutes and the broiler temperature controller set at (204°C) 400°F (see
Item 3 on Page 7), the pressure should be at 4.0 IWC (7.0 IWC for propane). With the broiler
temperature controller set for (427°C) 800°F the high fire pressure is 5.0 !WC (10.3 IWC for propane).
High pressure is adjusted using the regulator in the top of the gas safety valve. Low fire is adjusted
using the gas pressure regulator. See Figure 5 for gas system layout.
2. The burners in the appliance are a special infrared type. All of the air for combustion must be injected
through the Venturis. This makes orifice design and alignment very critical. The orifice design, in
combination with the correct natural or propane gas pressure will result in adequate air aspiration and
mixing. There are no air shutters. No air adjustment is needed. The proper orifice part numbers are
found in Section VII - Replacement Parts.
CAUTION: DO NOT STACK BOXES OR IN ANY WAY BLOCK AREA IN IMMEDIATE VICINITY OF
VENTURIS OR IN ANY OTHER WAY OBSTRUCT FLOW OF COMBUSTION AIR.
3. Pilot burner flame is fixed and is not adjustable.
4. All burners will be bright orange when burning properly. If a dull red is observed after 30 minutes of
warm-up with a blue flame above the burner face, the orifice is not aligned properly. "Popping," or
burning back at the orifice of the burner, is a result of the burner screen being loose or a faulty gasket
under the burner screen. LP machines may exhibit a light "popping" sound when the unit is turned off;
this is normal.
NOTE:
IF BURNER SCREEN IS TORN OR HAS A HOLE, OR IF A GASKET IS LEAKING, THE
BURNER MUST BE REPAIRED. See
Figure 4
.
III. OPERATING INSTRUCTIONS
BROILER ADJUSTMENT - DAILY
LIGHTING INSTRUCTIONS FOR ELECTRONIC IGNITION SYSTEM
1. Turn exhaust system on.
2. Make sure filters are in place in the hood.
3. Turn conveyor chain on and set speed at approximate mid-point.
4. Remove left side cover.
5.
Turn gas control switch on top of Honeywell valve to "ON".
6
