Install Instructions

ManualsBrandsLochinvar ManualsBoilers745,000 BTU Copper-Fin Boiler (NG)

Installation & Service Manual

7 Domestic water heaters

RELIEF

VALVE

BUILDING

HOT

WATER

SUPPLY

COLD

WATER

SUPPLY

BUILDING

RETURN

MIXING

VALVE

DRAIN

REFERENCE CHART FOR

COMMON MANIFOLD SIZE

LOCK-TEMP

STORAGE

TANK

Y-STRAINER

(TYPICAL)

DIR #2000570592_000

BUILDING RECIRCULATION

FILTER (IF REQUIRED SEE

SECTION 7)

Figure 7-3_Multiple water heater piping with a single storage tank

COMMON MANIFOLD SIZE (Min.)

Models: 497 - 747

Number of Units GPM

Diameter

(in.)

2 120 3 1/2

3 180 4

4 240 5

5 300 5

6 360 6

7 420 6

8 480 6

COMMON MANIFOLD SIZE (Min.)

Models: 987 - 2067

Number of Units GPM

Diameter

(in.)

2 180 4

3 270 5

4 360 6

5 450 6

6 540 6

7 630 8

8 720 8

*Please note that these illustrations are meant to show system piping concept only, the installer is responsible

for all equipment and detailing required by local codes.

NOTICE