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Quest Gas Fired CHH-300 Installation, Operation and Maintenance Instructions
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• Pump and Gas Pressure Gauges
4. Setup
4.1 Positioning Equipment on the Job
Before choosing the location to place the central hydronic heater on a job site, several factors should be
considered.
• If possible, the CHH should be placed at a central position that will minimize and equalize the lengths
of hoses. This helps to ensure maximized and equalized HTF flow.
• Convenient access to a suitable electrical connection, if site power is to be used. 120V, 1PH, 60Hz,
20A, 3-wire grounding is required.
• Convenient access to bulk truck re-fueling in the case of propane systems.
• Do not locate in the path of job site traffic.
• Avoid locations that will expose the CHH to intense dust or other sources of air contamination. Clean
flowing air is essential to maintain clean combustion.
• Observe all requirements listed in the “Instructions for Installation” document provided with this unit.
4.2 Hose and Accessory Connections
In order to make use of the heated fluid, it is necessary to lay out a circuit of hoses to; distribute the hot fluid,
transfer it’s heat to another medium and return the cooled fluid to the CHH for re-heating (Fig. 25).
19: Low Water Cutoff
20: High Temp Auto Switch
21: High Temp Limit Switch
22: High Pressure Switch
23: Pump Pressure Gauge (PSI)
24: Gas Pressure Gauges (“WC)
