User Manual

Form 43471010
Dec 2017 -5-
5.0) SPECIFICATIONS
Model
No.
Btu/hr
High
Input
(2-stage)
Btu/hr
Low
Input
Heat
Exchanger
Length
Total
Heater
Length
Flue Restrictor
Plate
I.D. & Part #
Orifice Size
Minimum *
Mounting Height
Natural Gas
Propane Gas
@
Horizontal
@
45º Angle
16’
9’-3”
SIR25
25,000
n/a
7/8”
42741120
#42
(0.094)
#52
(0.064)
8’
8’
SIR35
35,000
25,000
1”
42741041
#35
(0.110)
1.75mm
(0.069)
8’
8’
SIR45
45,000
31,500
1-1/8”
42741031
1/8”
(0.125)
5/64”
(0.078)
8’
8’
* 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 SunStar representative for the
particulars of your installation requirements.
Model Identification:
Control Option
Suffix
Gas Type
Description
N5
Natural
Single Stage Gas Valve – Single Stage Input
L5
Propane
Single Stage Gas Valve – Single Stage Input
N7
Natural
Two Stage Gas Valve – Modulating Input – High/Low Fire
L7
Propane
Two Stage Gas Valve – Modulating Input – High/Low Fire
Type
Gas
Gas Pipe
Connection
Tube
Diameter
Flue
Connection
Fresh Air
Connection
Electrical
Supply
Current
Rating
Natural
or Propane
½” MPT
(Male)
3”
4” Round
4” Round
120 Volt, 60Hz,
1 Phase
2.6 Amp
Module Electrical Rating:
Ignition System (direct spark):
Fuse : 2 Amp 250V (for 24V Circuit) Input Power
Input-Control: 18-30VAC 60 Hz (class 2 transformer)
Flame Sensitivity: 0.7 uA (microamps) minimum
30 second pre-purge period
21 second trial for ignition period
Single trial for ignition (local sense)
6.0) PACKING LIST
A. Control/Draft Inducer Package
Part Description QTY
Control Box Assembly .............................................................................................................................. 1
Draft Inducer Assembly (with 4” Starting Collar #40504020) .......................................................... 1
Flue Restrictor Plate (refer to 5.0) for I.D. & part number) ................................................................. 1
15” Plastic Vacuum Air Tube (#03988150) .......................................................................................... 1
Control Fastener Kit (#42787000) ........................................................................................................ 1
Containing: ¼ - 20 Locknuts (#02167010) ............................................................. 6
Tube Flange Gaskets (#4292150) ........................................................ 2
Gas Connector 5/8” OD x 36” (#30302360) US only ......................................................................... 1
Installation & Operation Instructions (#43471010) ........................................................................... 1