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.
TYPE NH - DUAL MODELS 514-1826
23
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.
Содержание 0133-4001 WH
Страница 19: ...19 FLOW RATES...
Страница 21: ...21 TYPE WH UNITEMP 80 SYSTEM PIPING DIAGRAMS...
Страница 28: ...LOCATION OF CONTROLS 28 400 WH1 WH2 WH3 181 LOW NOx WH1 Fig 9360...
Страница 29: ...29 Fig 9334 LOCATION OF CONTROLS...
Страница 38: ...WIRING DIAGRAM WH2 182 260 38 WIRING DIAGRAMS...
Страница 39: ...WIRING DIAGRAM WH2 330 400 39...
Страница 40: ...40 WIRING DIAGRAM WH2 514 624...
Страница 41: ...41 WIRING DIAGRAM WH2 724 1336...
Страница 42: ...42 WIRING DIAGRAM WH2 1414 1826...
Страница 43: ...43 WIRING DIAGRAM WH2 2100 2500...
Страница 44: ...44 WIRING DIAGRAM WH2 3001 4001...
Страница 45: ...WIRING DIAGRAM WH1 181 261 LOW NOx 45...
Страница 46: ...46 WIRING DIAGRAM WH1 331 401 LOW NOx...
