Fan and Heater Control Board, System Checks

FENWAL-SERIES 05-14

Fan and Heater

Control Board	Comments
Gas Valve Relay
Current Ratings:
A) 05-14X201-00X	Common relay output

B)05-14X301-00X VIsolated valve contacts

05-14X501-00X 1) 24VAC 2amps

2)120VAC 1amps

3)240VAC 0.5amps

Timing

(Trial -for-Ignition)

-000: 3.3 seconds

-001: 4.7 seconds

-005: 10 seconds

Electrodes

05-100000-XXX*: Gap 0.125" = 0.031" or

22-100000-XXX*:

*Last three digits designate configuration Lead Wire

05-125978-0XX**: High Voltage

05-125979-0XX**: Low Voltage05-14X401-00X 120VAC 1 amp

CAUTION: If ambient temperature ratings are exceeded, damage to the unit and/or improper operation may result.

**Last Two digits designate length of wire in inches. EX: -024 = 24 inches. When ordering, specify length required.

Wiring

IMPORTANT: The model number of each Fenwal Spark Ignition Module is stamped on a lable attached to the high voltage transformer. Select the electrical ciruit diagram in Figure 3 which matches the model number on the high voltage transformer and wire the unit accordingly.

NOTE: The burner and the 120V suppy (NEUT- L2) must be grounded to obtain satisfactory opera- tion. Failure to do so will prevent ignition from lasting beyond the trial for ignition period.

Fenwal Gas Ignitors are provded with 1/4" male quick connect terminals (ARK-LES Part No. 300 H19A or recommended equivalent should be used for all connections.) When making connections, be

sure they conform to both U.L. and local codes.

NOTE: High voltage lead wire should be routed at least 1 inch from metal piping or metal frames. Do not wrap or bundle any wires with or against the high-voltage lead wire.

CAUTION: HIGH VOLTAGE

NOTE: Although epoxy coated to insure proper operation at 90% relative humidity, good electrical practice should be followed. Insure the control is mounted so that total water immersion will not result. If such a condition occurs, unit should be cycled to the OFF position and inspected by a qualified service person before recycling.

Warning: Do not apply power to imput terminals unless electrode is properly connected and grounded or damage to the unit may result.

System Checks

Preliminary System Checks

It is desireable to checks the system after installa- tion and before gas supply is turned on.

Be sure that the input is polarized as shown on wiring diagrams and the installation is electrically grounded. Cabinet, electrode and burner must have a common ground. Connect as shown in proper diagram in Figure 3, page 73.

Polarity Check

1.With voltmeter or indicator light, measure from Terminal A (L1) to ground. Voltage should be 120V.

2.Measured from L2 to ground. Voltage should be "0".

3.If 1 and 2 above are opposite, reverse input leads to insure correct polarity.

Initial Operation

1.Check installation, mounting and elec trode gap to insure conformance to specifications.

continued on page 74