MOUNTING

The Series 05-21 is not position sensitive and can be mounted vertically or horizontally. The case, or printed circuit board, may be mounted with #6 hardware, Integral standoffs on the bottom of the PC board provide proper electrical and thermal isolation between the board and the mounting surface.

INITIAL OPERATION

1. Check installation, mounting and position of ignitor in the flame envelope.
2. Apply 120VAC power to the system_ Manually shut off the gas supply and apply 24VAC power to the system by advancing the thermostat.
3. Check to insure that the ignitor glows during the trial-for-ignition period specified for the unit. The system should lock out after the trial-for-Ignition period. Set thermostat to the lowest setting.
4. Manually open the gas supply line and advance the thermostat to recycle the system.
5. Check that ignition has been accomplished within the trial period. The ignitor glow will diminish after the trial-for? ignition period.
6. If the system ignites but foils to hold in, check for 5 microamps minimum flame sense current using a Fenwal Test adapter, P/N 05-080223-001 and a 0-SODC moving coil microammeter per Figure 46. Also, insure that the system is. properly grounded per Figure 4A and 4B.

WIRING

CABLE ASSEMBLY
Fenwal P/N 05-128070-0XX (Last two digits indicate length of wire in inches.)
Insert plastic connector onto edge of PC board as shown in Figure 1_ (connector will not fit if reversed.) Connect leads as shown in Figures 4A and 4B.
CAUTION: 120 Volts
Black wire to hot-side 120VAC line.
Gray wire to silicon carbide ignitor
Blue wire to silicon carbide ignitor Non-polarized
White wire to neutral side of 120VAC tine Brown wire to gas valve (24VAC)
Red wire to 24VAC supply
Green wire to ground (Control module, burner, and gas valve must have common ground)
NOTE: lr the cable assembly is not ordered from fenwtri, component parts may be procured using Table 1 below.