Wing Enterprises IOMWDF-1 specifications Section VI Unit Shutdown, Suggested Control Settings

C.Gas Pressure Switches - Operate unit in Heat mode. The low pressure switch will trip out and must be reset before resuming operation when the inlet gas valve is turned off during operation.The high pressure switch may be checked out by reducing the setting of its trip point below unit operating pressure. It should then trip out and shut off the burner. Return the adjustment to its original setting and reset to resume operation.

When checking operation of gas pressure switches on systems without pilot the heat switch will have to be turned off for approximately five seconds to reset the ignition control.

D.Air Pressure Switches - The high air pressure switch is checked by removing the sensing tube from the enter- ing air side of the burner. Switch operation will shut off the burner. Recycle is automatic when the sensing tube is replaced.The low air pressure switch is checked by removing the sensing tube from the leaving air side of the burner. Switch operation will shut off the burner. Recycle is automatic when the sensing tube is replaced.

When checking operation of air pressure switches on systems without pilot the heat switch will have to be turned off approximately five seconds to reset the igni- tion control.

E.Temperature Controls – These controls are checked by adjusting control settings to a lower temperature setting while the unit is operating on high fire and observing cutoff. The controls should be reset to settings shown below:

	Suggested Control Settings
TC-01	Room Thermostat		Customer Discretion
TC-03	On-Off Inlet Ductstat			65°F
TC-08	Freeze Thermostat			3 min.,...45°F
PS-04	Low Gas Pressure Switch			1.0”w.c
PS-07	High Gas Pressure Switch			125% of firing rate
TC-09	Night Set Back Room		Customer Discretion
TC-52	Remote Temperature Selector ....		Customer Discretion
FL-02	High Temperature Limit (manual)			........ Not adjustable
RE-26	High Limit Discharge Ductstat		................................	95°F
RE-26	Low Limit Discharge Ductstat		................................	55°F
PS-12	Clogged Filter Switch	Adjust to Field Conditions
PS-13	Building Pressure Switch ..	Adjust to Field Conditions

SECTION VI - UNIT SHUTDOWN

A. Extended Shutdown - B. Emergency Shutdown ONLY -

1.Set the Heat OFF/ON switch to the OFF, then turn the Fan switch to the OFF position.

2.Close all manual gas valves.

3.Open the main electrical disconnect switch.

1.Open the main electrical disconnect switch.

2.Close all manual gas valves.

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