Raypak 0133-4001 WH manual Type NH Dual Models, Minimum Input Adjustment

TYPE NH - DUAL MODELS 514-1826

1.Estimate total length of supply and return loop. Refer to table.

2.If multiple loops are used:

(A)Use multiple pumps and size return pipes according to table; or

(B)Use one larger recirculating pump with balancing valves on each return line.

3.First fixture on supply line must be a minimum of 20 feet from the heater.

4.Supply line size must be 2" minimum. If not possible, add a tank between heater and first fixture.

MINIMUM INPUT ADJUSTMENT

Model Types NH and WH have minimum input ratings as specified on their individual rating plates. Minimum input controllers have been pre-set at the factory. Consult with factory representatives if a minimum input problem should occur.

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