Delta F-25 User Manual download pdf (Page 24)

19

Primary Piping

If the radiant system tubing contains no

oxygen barrier, a stainless steel heat

exchanger must be used. Failure to

install a heat exchanger could lead to

premature failure of the outer tank and

void any warranty claim.

Radiant heating system piping should

include a means of regulating the boiler

return water. The return water tempera-

ture to the unit should be maintained at

130ºF or higher. Failure to prevent low

return water temperature to the unit

could cause premature failure of the unit

and it’s burner system resulting in severe

personal injury, death or substantial

property damage.

Size the system piping and circulator to pro-

vide the flow needed for the radiant system.

To control the zone circulators refer to Fig.

19, page 35.

To ensure adequate flow rate through

the ELITE, maintain a minimum 1 inch

diameter on the system piping connect-

ing the unit to and from the primary /

secondary connection.

System Piping - Multiple Units Installation

Use a balance manifold system as the pri-

mary / secondary connection to the space

heating piping as shown in Fig. 12 page 23.

Refer to Fig. 7 page 20 to install air elimi-

nation and expansion tank.

For the space heating piping refer to the

applications mentioned in this manual or

use recognized design methods.

To ensure adequate flow rate through

the ELITE, maintain a minimum 1 inch

diameter on the system piping connect-

ing the unit to and from the primary /

secondary connection.

NOTICE

NOTICE

WARNING

NOTICE

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