Raypak MVB TYPE B 504-2004 Instrucciones de operaciones descargar pdf (Pagina 36)

To make an adjustment to a setting in the control,

begin by selecting the “ADJUST” menu. To change

from the view menu to the adjust menu, simultaneous-

ly press and hold all three buttons for 1 second. The

menu name, “ADJUST” will be displayed in the menu

field.

The menu will automatically revert back to the view

menu after 20 seconds of keyboard inactivity. Then

scroll to the desired item using the scroll button. Fi-

nally, use the L or M button to make the adjustment.

In the absence of other information, the values pro-

vided in Tables Q, R and S should be used as default

settings.

Heater Sequence of Operation

If all limits are satisfied and there is a call for heat:

1. The heater pump is powered and begins circulat-

ing water through the heat exchanger.

2. The blower is powered and goes through a 15 sec-

ond prepurge beginning when air flow is proven by

closure of the blower suction air pressure switch.

3. The igniter is powered, and once proven, heats up

for 20 seconds.

4. The gas valve is then energized for a 4 second

trial for ignition period. Trial for ignition is fixed at

50% input. The heater is allowed to modulate once

flame is proven and the firing rate will adjust to

match the load based on the configuration and set-

tings of the temperature control or external input.

5. Once the heat demand is satisfied the gas valve

will close and the blower will run a 30 second post

purge. The heater pump will continue to circulate

water for 0 to 10 minutes depending on the pump

delay setting on the Raypak modulating tempera-

ture control.

Modulating

Control

Item

DHW

Modulation

External Input

Signal

Offset

Fig. 33: Modulating Temperature Control Display

Item Field

Displays an

abbreviated

name of the

selected item

Buttons

Selects

Menus,

Items and

adjusts

settings

{

Menu Field

Displays the current menu

Number Field

Displays the

current value of

the selected

item

Status Field

Displays the

current status

of the control’s

inputs, outputs

and operation

Rank Item Field Number Field Type Fault Description

0 E01 Err Error EEPROM error

1 FP Err Warning Flame proof warning

2 BOIL OUT SHr Error Boiler outlet sensor short

3 BOIL OUT OPn Error Boiler outlet sensor open

4 BOIL IN SHr Error Boiler inlet sensor short

5 BOIL IN OPn Error Boiler inlet sensor open

6 SUP SHr Error System sensor short

7 SUP OPn Error System sensor open

8 OUTDR SHr Error Outdoor sensor short

9 OUTDR OPn Error Outdoor sensor open

10 DHW SHr Error DHW sensor short

11 DHW OPn Error DHW sensor open

Table T: Error Codes

California Hot Water Supply, Inc.

(800) 249-7244

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 ... 55 56

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Raypak MVB TYPE B 504-2004 Instrucciones de operaciones Pagina 36

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