Raypak MVB TYPE B 504-2004 Instrucciones de operaciones descargar pdf (Pagina 32)

Mode 7 – Designed for an external input signal with

primary/secondary piping. The external input signal

can be provided from a BMS, an EMS or a sequenc-

ing control. The external input signal changes the

boiler target according to a linear scale (see Tables O

& P). The control operates the boiler burner to main-

tain the boiler target at the remote system sensor. See

Fig. 32.

water is also controlled to the boiler target temperature

(factory default WH1 water heaters). See Fig. 30.

Mode 4 – Not recommended.

Mode 5 – Outdoor reset using primary/secondary pip-

ing. The heater is operated as in Mode 2. However, the

target temperature is based on outdoor reset. See Fig.

31.

Mode 6 – Not recommended.

Fig. 32: Mode 7 Primary/Secondary Piping with

External Target Temp

Fig. 31: Mode 5 Primary/Secondary Piping with

Outdoor Reset

0-10 VDC 0-20 mA* Boiler Target

0 0 --- (OFF)

1 2 50°F

2 4 68.9°F

3 6 87.8°F

4 8 106.7°F

5 10 125.6°F

6 12 144.1°F

7 14 163.3°F

8 16 182.2°F

9 18 201.1°F

10 20 220°F

Table O: 0-10 VDC or 0-20 mA External Input Signal

*Requires a 500Ω resistor.

ELECTRONIC

Fig. 30: Mode 3 Dedicated DHW

*Maximum 4 times the pipe diameter or 12”, whichever is less.

California Hot Water Supply, Inc.

(800) 249-7244

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Raypak MVB TYPE B 504-2004 Instrucciones de operaciones Pagina 32