Pentair MiniMax Plus HP Series, PowerMax installation manual Stack Type Indoor Draft Hood Kit

Installation (contd.) 19

NOTE

The heater requires two uninterrupted air supply openings; one for ventilation and one to supply oxygen for proper gas combustion. The air supply openings should be sized according to Tables 10. and 11.

Air supply requirements below apply to all

b)Construct a non-combustible base from masonry blocks as illustrated, see Figure 23.

MiniMax heaters, including PowerMax versions.

	All Air From Inside
Model	Air for Combustion	Air Ventilation
	Sq. In.	Sq. In.
150	150	150
195/200	200	200
250	250	250
300	300	300
350	350	350
400	400	400

BASE FOR USE ON COMBUSTIBLE FLOORS

SHEET METAL

BLOCKS

T

O

H

. Min 6"

. Min 6"

HOLLOW MASONARY BLOCKS, NOT LESS THAN 4" THICK (LAID WITH ENDS UNSEALED AND JOINTS MATCHED FOR AIR CIRCULATION). COVER BLOCKS WITH

24 GA. (MIN.) GALVANIZED SHEET METAL.

Table 10.

Figure 23.

	All Air From Outside
Model	Air for Combustion	Air Ventilation
	Sq. In.	Sq. In.
150	37	37
195/200	50	50
250	63	63
300	77	77
350	90	90
400	100	100

CAUTION

Chemicals should not be stored near the heater installation. Combustion air can be contaminated by corrosive chemical fumes which can void the warranty.

Table 11.

INSTALLATION ON FLOORS CONSTRUCTED OF COMBUSTIBLE MATERIALS

The heater may be placed on a “combustible floor” using either of the two methods listed below:

a)Use Listed Factory Non-combustible Base Kit for use on combustible floors.

Model	Non-Combustible Base Kit
150	471389
195/200	471390
250	471391
300	471392
350	471393
400	471394

Table 12.

Rev. G 1-22-04

STACK TYPE INDOOR DRAFT HOOD KIT

The proper draft hood and adapter must be installed on the heater as shown below and on page 20:

Model	Draft Hood	Product No.	Vent Dia.
150	DH15	460227	6 in.
195/200	DH20	460228	7 in.
250	DH25	460230	7 in.
300	DH30	460231	8 in.
350	DH35	460233	9 in.
400	DH40	460234	10 in.

Table 13.

P/N 471048