14
On a two- pipe system you will need to supply a second approved flexible oil line in order to be able to
swing the burner door open without disconnecting oil lines. An optional flexible oil line is available through
your distributor.
Gas Piping
Connect from the gas supply to the burner combination gas valve inlet using new, approved
gas lines and fittings only. Provide support for gas piping. Do not rest weight of piping on burner gas valve.
Apply pipe dope sparingly at all joints. Use only pipe dope listed for use with natural or propane gas. Do not
use pipe sealing tape. Do not hold gas valve with pipe wrench. Use crescent wrench or other smooth-jawed
device. Do not over-tighten. Failure to comply with above could result in severe personal injury, death or
substantial property damage.
Pipe Capacity Table - Natural Gas BTU/Hr
1
Equivalent Pipe
Length
2
Nominal Pipe Diameter Inches
3/4” 1” 1-1/4”
15’
172,000 345,000 750,000
30’
120,000 241,000 535,000
45’ 99,000
199,000
435,000
60’ 86,000
173,000
380,000
75 77,000
155,000
345,000
90’ 70,000
141,000
310,000
105’ 65,000
131,000
285,000
120’
120,000
270,000
150’
109,000
242,000
180’
100,000
255,000
Note: 1. Using 0.06 Specific Gravity Gas and a pressure drop of 0.3” of Water Column
2. To obtain equivalent length of pipe add total length of pipe plus 3’ for each 90
o
elbow
Electrical Wiring
ELECTRICAL WIRING MUST CONFORM TO THE NATIONAL ELECTRICAL CODE,
ANSI/NFPA No. 70-1990 AND LOCAL CODES
.
THE BOILER MUST BE ELECTRICALLY GROUNDED AND ON A SEPARATE FUSSED
DISCONNECT SWITCH
.
ELECTRICAL SHOCK IS HAZARDOUS. TURN OFF ALL POWER SUPPLIES AT SERVICE
ENTRANCE BEFORE STARTING TO MAKE WIRING CONNECTIONS OR REPAIRS.
Refer to wiring diagrams in rear of manual for electrical connections. The boiler should be connected by a
separate, permanently live electrical supply line with a 15 amp fused rating. Use No. 14 AWG wires rated
for at least 90
o
C. Install a separate fused disconnect switch near the boiler so power can be shut off for
servicing.
Caution: Label all wires prior to disconnection when servicing controls. Wiring errors can cause improper
and dangerous operation. Verify proper operation after servicing.
Install the room thermostat on an inside wall away from fireplaces, appliances or sunlight. Set the heat
anticipator according to the instructions from the aquastat manufacturer. Connect the thermostat leads to the
“TT” connections on the aquastat control or system control.
Warning