Siebring ROYAL HEAT 240, Instructions Manual

Page: 16 / 29

Furnace Adjustments
Pilot Adjustment
The pilot flame should bathe the thermocouple in flame (1 ½” – 2”). Each gas valve has a pilot
flame adjustment. Remove the screw beside the pilot gas line on the gas valve.
The adjustment screw is down in this threaded hole. Turn counter-clockwise to increase flow.
Pilot Burner Adjustment (on gas valve):
1. Remove Pilot adjustment cap.
2. Adjust pilot key to provide properly sized flame. 2” preferred.
Clock-wise to decrease, counter clock-wise to increase
3. Replace pilot adjustment cap.
4. Leak test.
⅜ TO ½ INCH
PILOT
THERMOCOUPLE
Main Burner Adjustment
The gas system should have its pressure tested. See Rating Plate for required pressures.
See “Robertshaw Installation Data” in appendix for more information about these valves.
The gas valve has an adjustable pressure regulator. The largest screw on the top of the gas
valve must be removed to gain access to the adjustment screw. Turn clock-wise to increase
the flow.
Blower Belt Adjustment
The blower belt must be loose enough that ½” to 1” of belt deflection can be obtained with a
gentle push on the belt, mid-point between pulleys.
Furnace power must be off while
performing this check.
Fan & Limit Adjustments
Each fan and limit has three settings. Before making any adjustments, the rotating dial must
be held in place with one finger or thumb while another finger on the other hand is used to
change the setting, being careful not to damage or strain the sensing element.
- Fan Stop 80°- 90° User Selectable
- Fan Start 110°- 120° User Selectable
- High Limit 170°- 180°
15
Approx. 2”
To Light Pilot –
Follow procedures on page 3, “Operating Instructions” of the “Robertshaw
Installation Data” insert in the rear of the manual.