Space Ray LTS Series Two Stage - Manual (Page 7)

Form #43155040
-6- May 2013
6.0) LTU SERIES SPECIFICATIONS
Model Model Model Model
No. No. No. No.
Input Input Input Input,,,,
Btu/hr Btu/hr Btu/hr Btu/hr
Flue Restrictor Flue Restrictor Flue Restrictor Flue Restrictor Plate Plate Plate Plate
I.D. & I.D. & I.D. & I.D. & Part # Part # Part # Part #
Orifice Size Orifice Size Orifice Size Orifice Size
Minimum * Minimum * Minimum * Minimum *
Mounting Height Mounting Height Mounting Height Mounting Height
High High High High Low Low Low Low Natural Gas Natural Gas Natural Gas Natural Gas Propane Gas Propane Gas Propane Gas Propane Gas
@ @ @ @
Horizontal Horizontal Horizontal Horizontal
@ @ @ @
45º Angle 45º Angle 45º Angle 45º Angle
LTU 80 80,000 50,500 1-1/2” #42741050 #19 (0.166) #38 (0.102) 13 ft. 12 ft.
LTU 90 90,000 57,000 1-1/2” #42741050 #16 (0.177) #36 (0.106) 13 ft. 12 ft.
LTU 100 100,000 63,000 1-5/8” #42741060 #14 (0.182) #33 (0.113) 13 ft. 12 ft.
LTU 110 110,000 69,500 1-3/4” #42741070 #10 (0.194) #31 (0.120) 14 ft. 13 ft.
LTU 120 120,000 76,000 1-3/4” #42741070 13/64 (0.203) 1/8 (0.125) 14 ft. 13 ft.
LTU 125 125,000 80,000 1-7/8” #42741080 #5 (0.206) #30 (0.129) 14 ft. 13 ft.
LTU 130 130,000 82,000 1-7/8” #42741080 #4 (0.209) 3.3mm (0.130) 14 ft. 13 ft.
LTU 140 140,000 88,500 2-1/32” #42741090 5.5mm (0.216) #29 (0.136) 15 ft. 14 ft.
LTU 150 150,000 95,000 2-1/32” #42741090 5.7mm (0.224) #28 (0.140) 15 ft. 14 ft.
LTU 160 160,000 100,000 2-1/4” #42741100 5.8mm (0.228) #27 (0.144) 15 ft. 14 ft.
LTU 175 175,000 110,000 2-1/4” #42741100 “C” (0.242) 3.8mm (0.150) 15 ft. 14 ft.
LTU 180 180,000 114,000 2-1/4” #42741100 “C” (0.242) #24 (0.152) 18 ft. 17 ft.
LTU 200 200,000 125,000 2-3/8” #42741130 “F” (0.257) #21 (0.159) 18 ft. 17 ft.
LTU 225 225,000 146,000 2-1/2” #42741140 6.9mm (0.272) #18 (0.170) 20 ft. 19 ft.
LTU 250 250,000 162,000 2-3/4” #42741150 “K” (0.281) 4.5mm (0.177) 20 ft. 19 ft.
* MOUNT HEATERS AS HIGH AS POSSIBLE. Minimums are shown as a guideline for human comfort and uniform
energy distribution for complete building heating applications. Consult your Space-Ray representative for the
particulars of your installation requirements.
Type Type Type Type
Gas Gas Gas Gas
Gas Pipe Gas Pipe Gas Pipe Gas Pipe
Connection Connection Connection Connection
Tube Tube Tube Tube
Diameter Diameter Diameter Diameter
Flue Flue Flue Flue
Connection Connection Connection Connection 1 1 1 1
Fresh Air Fresh Air Fresh Air Fresh Air
Connection Connection Connection Connection
Electrical Electrical Electrical Electrical
Supply Supply Supply Supply
Current Current Current Current
Rating Rating Rating Rating
Natural
or Propane
½” MPT
(Male) 4” 4” Round 6” Round
120 Volt, 60Hz,
1 Phase 2.6 Amp
1 LTU 180-250: 6” round. See Section 17.0) for vent sizes and limitations.
Fuse Fuse Fuse Fuse Rating: Rating: Rating: Rating: Ignition Syste Ignition Syste Ignition Syste Ignition System (direct spark): m (direct spark): m (direct spark): m (direct spark):
In-line: 2 Amp 250V
(for 24V Circuit)
30 second pre-purge period
7.0) LTU SERIES PACKING LIST
A. A. A. A. Control/Draft Induce Control/Draft Induce Control/Draft Induce Control/Draft Inducer Package r Package r Package r Package
Part Description Part Description Part Description Part Description QTY QTY QTY QTY
Control Box Assembly .............................................................................................................................. 1
Draft Inducer & Junction Box Assembly ................................................................................................ 1
Flue Restrictor Plate (See Section 6.0) for plate I.D. and part no.) ................................................... 1
4” x 6” Starting Collar
1 (#42892009) Supplied with LTU 180-250 ................................................. 1
Control Fastener Kit (#42907010) ....................................................................................................... 1
Containing: #8-32 Screws & Nuts (#02166010 & #02127030) .......................................... 2
¼ - 20 Locknuts (#02167010) .............................................................................. 6
Tube Flange Gasket (#42921000) ...................................................................................................... 2
Installation & Operation Instructions (#43155040) .......................................................................... 1
Gas connector, 5/8” OD x 36”
2 (#30302360) .................................................................................... 1
1 4-inch Starting Collar (#40504020) supplied with LTU 80-175 models.
2 LTU 225 and 250 models using Gas Connector, 1” OD x 36” (#30302361).