1-866-413-5214
Quest Oil Fired CHH-980 Installation, Operation and Maintenance Instructions
17
quest
quest
www.QuestProtect.com
sales@QuestProtect.com
4.6 Normal 1-Pump Mode with Light Load:
• If the CHH-980 is connected to a distribution system that will demand only half or less of its capacity
in terms of flow requirements and heat draw, the “Normal 1-pump Mode” should be used. This will
provide better efficiency for the lighter load.
• Adjust the valves as shown in (Fig. 41). Turn ON only the “Primary Pump Switch” (Fig. 15).
• Keep in mind that either pump could be used in this mode but it is imperative that the valve (A or B) for
the pump not being used must be closed to prevent short circuiting of the fluid and greatly reduced out-
flow.
4.7 Pump-assisted Chamber Draining:
• If, for any reason, the CHH-980 heat exchanger must be drained, the primary pump can be used to
simplify the draining.
• Locate the 1/2” drainage hose, at the opposite end of the unit, below the burner. Connect this hose to
the short ½” suction hose at valve “D” in (Fig. 42). Garden hose fittings make this connection easy.
OPEN both valves on the 1/2” drainage line below the burner.
• Prepare a short length of 1” hose with a female quick coupler on one end and the other end open.
Connect the female quick coupler to one of the male outlets on the side of the CHH-980. The open end
should be placed in a barrel to catch the fluid. It will take more than 100 gallon capacity to hold it all.
• Adjust the valves as shown in (Fig. 42). Turn ON only the “Primary Pump Switch” (Fig. 15).
• When all fluid is pumped out, shut OFF the pump switch.
41:Normal Mode with 1 Pump Operation.
42: Pump-assisted Chamber Drain.
