Bradford White BWCH Operations Instructions download pdf (Page 26)

Page 26

BRADFORD WHITE CORP.

additional components.

5.3 External Staging Control Wiring

WARNING

Improper eld wiring may result in re or explosion

which can cause property damage, severe injury,

or death. Make only wiring connections which are

in accordance with the Installation and Operation

manual.

AVERTISSEMENT

Un câblage incorrect lors de l’installation peut

causer un incendie ou une explosion pouvant

entraîner des dommages matériels, de graves

blessures ou la mort. Ne faire seulement que les

connexions conformes au Manuel d’installation et

d’exploitation.

The wiring methods in this section must be

used to connect an external staging control, such as a

multiple boiler control, building automation system,

energy management system, etc.) Other wiring

methods may be unsafe.

Figure 15 shows how to wire the external

controller to the Copper Brute II’s eld wiring panel,

which is located on the right side of the Copper Brute

II.

Most of the time, the number of stages from the

external control will match the number of stages on

the Copper Brute II. However, in some instances, the

controller will not have enough staging capability to

work with all of the stages on a Copper Brute II unit

(for instance, using an 8-stage external control with

four 4-stage Copper Brute II units.) In these instances,

it is very important to follow the instructions in this

section Figure 15 shows how to combine stages on the

Copper Brute II for those instances when the external

controller cannot control all the stages available.

NOTE: The only time Copper Brute II stages should

be jumpered is when the Copper Brute II has an

external control, and the Copper Brute II is used in

Mode 6. In all other modes, when the Copper Brute II

controls its stages, the terminals shown in Figure 15

must NOT be jumpered.

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Bradford White BWCH Operations Instructions Page 26

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