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GAS MODELS
1. Low and/or inconsistent gas pressure ...
a. Natural gas pressure must be between 3.5 inches (8.7 mb) and 4.0 inches (9.9 mb) of water column
(W.C.).
b. Liquid propane (L.P.) pressure must be between 10.5 inches (26.1 mb) and 11.0 inches (27.4 mb) of
water column.
2. Poor air/gas mixture (too much gas or not enough air) at burner ... yellow or poor flame pattern ...
a. Not enough make-up air.
b. Restriction in exhaust ductwork.
c. Gas pressure too high.
d. Impellor (fan/blower) rotating in the wrong direction.
e. Burner orifice size, drill material size (D.M.S.) too large for application (i.e., high elevation).
3. Sail switch is fluttering ...
a. Restriction in exhaust ductwork ...
1) Lint screen is dirty or is not being cleaned often enough.
4. Gas supply may have low heating value.
R. At the completion of the “AUtO” drying/cooling cycle ... load is coming out over dried...
1. Percentage of dryness (dryness level) of cycle selected is too high.
2. “A” and “b” factors are not set correctly or “b” factor has to be adjusted for adverse location conditions.
S. At the completion of the “AUtO” drying/cooling cycle ... load is coming out damp...
1. Percentage of dryness (dryness level) of cycle selected is too low.
2. “A” and “b” factors are not set correctly or “b” factor has to be adjusted for adverse location conditions.
T. Main burners are burning with a yellow flame (for Gas Models ONLY)...
1. Poor air/gas mixture (too much gas or not enough air at burner) ...
a. Not enough make-up air.
b. Restriction in exhaust ductwork.
c. Gas pressure too high.
d. Impellor/fan/blower (3-phase [3Ø] Models Only) rotating in the wrong direction.