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Copper Brute B4 Volume Water Heaters

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e.      Slide the adapter plate over the bottom of the 

stack extension as shown in Figure 5. Fit the 

stack extension down over the flue transition 

ring. Seat the adapter plate on the top assembly 

and secure it with two screws (see Figure 6).

f.       Indoor models, size 175 and 250 only, require 

an adapter cable (included with product). The 

cable connects the blocked vent safety switch 

(BVSS) on the bell of the external draft hood to 

the 6-position Molex plug on the side of the unit 

(see Figure 7). Refer to instruction sheet included 

with cable.

Improper installation or maintenance can cause 

nausea or asphyxiation from carbon monoxide 

in flue gases which could result in severe injury, 

property damage, or death.

Avoid placing the heater in locations where it can 

be damaged by water or condensate leakage. If this is 

not possible, provide a suitable drain pan to catch and 

divert any leakage. The pan must not block natural 

flow of air around the heater.

Locate the heater to provide adequate clearance 

on all sides for inspection, service and to provide 

adequate air circulation for proper operation. 

Locate the heater so the clearances from 

combustible surfaces shown in Table 1 and Figure 8 

are met. 

Locate the heater on a waterproof floor with a 

floor drain and a 6 inch (152 mm) minimum curb on 

all four sides to protect the building if heater repairs 

are needed.

A closet is any 4 sided enclosure 

which is less than 16* times the 

total volume of all the gas fired ap-

pliances within the enclosure.

A room is any enclosure which is 

at least 16* times greater than the 

total volume of all the gas fired ap-

pliances within the enclosure

An alcove suitable for the installa-

tion of a heater is a restricted sec-

tion of a room not separated from 

the room by a door or partition and 

which meets the minimum clear-

ances specified in this manual.

* When the ceiling height exceeds 8 feet, you are only allowed to con-

sider 8 feet when calculating the total volume of the enclosure.

   Top                                 37         940          Unobstructed
   Water conn. side            12         305          Unobstructed
   Opposite side                  6          152               6        152
   Front                                   Alcove              Unobstructed
   Rear                                6          152               6        152
   Vent*                                6          152                   —     
   Flooring                          Combustible          Combustible

   Service clearance = 36 inches (914mm) at front of heater,

    and 18 inches (457mm) at water connection side. 

   *1" (25mm) if double wall vent is used.

Outdoor installations are not recommended in areas 

where the danger of snow blockage exists. Copper 

Brute heaters can be installed in the standard low-

profile, grate top configuration as received from the 

factory, or with an optional vent cap.

Locate the heater in an open, unroofed area. 

Do not locate the heater below or adjacent to any 

doors, windows, louvers, grills, etc., which connect 

in any way with an inhabited area of a building, even 

though the access might be through another structure 

such as a garage or utility room (see Figure 9 and 

Table 1). There must be a minimum of 4 feet (1.22 

m) horizontally and vertically between the heater and 

any door, window, or gravity inlet to a building (see 

Figure 10).

If the heater is installed close to a structure, 

protect it from rain water runoff with rain gutters on 

the roof or other measures. Do not locate the heater 

near sprinkler systems that could spray water on it.

Avoid locations where wind deflection off nearby 

structures might cause wind loading and downdraft 

conditions. Where downdraft conditions exist, locate 

the heater at least 3 feet (0.91 m) from the structure.