figure 9 - Gas piping
The boiler is equipped with a ½” NPT connection on the gas valve
for supply piping and ½” NPT ball valve for manual shut off. The
following rules apply for boiler piping:
Use only those piping materials and joining methods listed
1.
as acceptable by the authority having jurisdiction, or in the
absence of such requirements, by the National Fuel Gas Code,
ANSI Z223.1- latest revision. In Canada, follow the CAN/CGA
B149.1 and .2 Installation Codes for Gas Burning Appliances
and Equipment.
iX - Gas supply pipinG
X - electrical wirinG
iMPORtaNt:
Wiring diagrams for the Gas-Fired Direct Vent Modulating Hot Water Boiler can be
found in Section XIV of this manual.
!
WARNING
For your safety, turn off electrical power supply at service
panel before making any electrical connections to avoid
possible electric shock hazard. Failure to do so can cause
severe personal injury or death.
NOTICE
IMPORTANT: Wiring must be N.E.C. Class 1. If original
boiler wiring must be replaced, use only type 105°C wire
or equivalent. Boiler must be electrically grounded as re-
quired by National Electrical Code ANSI/NFPA 70 - latest
edition. and operation.
codes
Installations must comply with National Electrical Code, any other
national, state, provincial, or local codes or regulations, and, in
Canada, with CSA C22.1 Canadian Electrical Code (Part 1) and any
local codes. (L1, L2)
line voltage connections
Connect 120 VAC power wiring to line voltage terminal strip
1.
on boiler control panel.
Provide and install a fused disconnect or service switch (15 amp
2.
recommended) as required by code.
Boiler circulator is shipped loose. Wire boiler circulator as
3.
shown in wire diagram label on boiler side panel. (CH L1, CH
L2) CH = Control Heat
When connecting a DHW circulator, connect wiring to line
4.
voltage terminal strip on boiler control panel. (DHW L1, DHW
L2) DHW = Domestic Hot Water
Use pipe joint compound suitable for liquefied petroleum gas
2.
on male threads only.
Use ground joint unions.
3.
Install a sediment trap upstream of gas controls.
4.
Use two pipe wrenches when making the connection to the gas
5.
valve to keep it from turning.
Install a manual shutoff valve in the vertical pipe about 5’ above
6.
floor outside the boiler jacket in addition to the shutoff valve
supplied with the boiler.
Tighten all joints securely.
7.
Propane gas connections should only be made by a licensed
8.
propane installer.
Two stage regulation should be used by the propane installer.
9.
Propane gas piping should be checked out by the propane
10.
installer.
checking the Gas piping
After all connections have been made, check immediately for leaks.
Open the manual shutoff valve. Test for leaks by applying soap suds
(or a liquid detergent) to each joint. Bubbles forming indicate leak.
Correct even the smallest leak at once.
!
WARNING
Never use a match or open flame to test for leaks!!
15
Summary of Contents for UTICA BOILERS UB95M-200
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