KEYSTONE Series OIL-FIRED HYDRONIC BOILERS

The KEYSTONE Series oil-fired, hydronic boilers are competatively priced and are offered in 3 and 4 section models. Offering multiple fir- ing rates covering a wide range of BTU requirements, with or without tankless coils. The KEYSTONE’s wet base designed heat exchanger is constructed of heavy duty cast iron sections with cast iron push nipples to reach 85%+ AFUE efficiencies utilizing a standard Beckett “AFG” burner. Boiler has 2” cast iron teardrop flame inspection/clea- nout port. Standard equipment: Packaged boiler with jacket, cast iron battery, Beckett burner, Honeywell controls, combination pressure/ temperature gauge, barometric draft control, drain valve, relief valve and circulator (field mounted).

ON HEAT EXCHANGER (10 YEARS PRO-RATED)

ON PARTS

CAT. NO. MFG. NO.

2W493 2W493 2W493 2W494 2W494 2W494

D.O.E. CAPACITY BTUH

UH3KW1.00Z 120,000 UH3KW1.00Z 92,000 UH3KW1.00Z 74,000 UH4KW1.25Z 181,000 UH4KW1.25Z 153,000 UH4KW1.25Z 111,000

* Nozzle installed on burner

** Nozzle shipped in Rerate Kit required (see Accessories) Note: Tankless Coil GPM based on 200°F boiler with 40-140°F

NET IBR OUTPUT BTUH

104,000 80,000 64,000

157,000 133,000 97,000

MODELS LESS TANKLESS COIL A.F.U.E. DIMENSIONS H x W x D PIPING

FIRING RATE GPH 1.00* 0.75** 0.60** 1.50** 1.25* 0.90**

84.4% 85.6% 86.1% 85.1% 85.9% 86.4%

36.0 x 19.65 x 17.75” Same as above... Same as above... 36.0 x 19.65 x 21” Same as above... Same as above...

CONNECTIONS RETURN 1-1/4” mpt

1-1/4” mpt

PIPING

CONNECTIONS SUPPLY 1-1/4” mpt

1-1/4” mpt

FLUE WEIGHT EACH 6” 6” 500 lbs 580 lbs

$2,675.37 $2,675.37 $2,675.37 $2,896.88 $2,896.88 $2,896.88

CAT. NO. MFG. NO.

2W493T 2W493T 2W493T 2W494T 2W494T 2W494T

D.O.E. CAPACITY BTUH

UH3KW1.00C 120,000 UH3KW1.00C 92,000 UH3KW1.00C 74,000 UH4KW1.25C 181,000 UH4KW1.25C 153,000 UH4KW1.25C 111,000

* Nozzle installed on burner

** Nozzle shipped in Rerate Kit required (see Accessories) Note: Tankless Coil GPM based on 200°F boiler with 40-140°F

NET IBR OUTPUT BTUH

104,000 80,000 64,000

157,000 133,000 97,000

MODELS WITH TANKLESS COIL A.F.U.E. DIMENSIONS H x W x D PIPING

FIRING RATE GPH

1.00** 0.75** 0.60** 1.50** 1.25* 0.90**

84.4% 85.6% 86.1% 85.1% 85.9% 86.4%

36.0 x 19.65 x 17.75” Same as above... Same as above... 36.0 x 19.65 x 21” Same as above... Same as above...

CONNECTIONS RETURN 1-1/4” mpt

1-1/4” mpt

PIPING

CONNECTIONS SUPPLY 1-1/4” mpt

1-1/4” mpt

FLUE WEIGHT EACH 6” 6” 500 lbs 580 lbs

$3,095.57 $3,095.57 $3,095.57 $3,487.04 $3,487.04 $3,487.04

CAT. NO.

ACCESSORIES FOR KEYSTONE SERIES BOILERS MFG. NO.

DESCRIPTION

2W493DK 550001729 2W494DK 550001783 4H122

4H135

26 x 36 x 2” Ultralite non-combustible mounting base for mounting on combustable surfaces

30 x 36 x 2” Ultralite non-combustible mounting base for mounting on combustable surfaces

Rerate Kit (0.60 & 0.75 GPH) Low Fire Baffle and Instructions UH3K1.00 Rerate Kit (0.90 & 1.50 GPH)

UH4K1.25 UH3K1.00

UH4K1.25

USE WITH EACH $32.00 $32.00 $55.43

$62.37

390

BOILERS