HydroTherm GX Series Guide

HydroTherm GXUM-1
'S ODEL G I FO ATI ES UAL
Modulating, Direct Vent, Gas-Fired Condensing
Natural Or Propane
150,000 to 200,000 Btuh Input
Boilers
see note gama
Do not store or use gasoline or other flammable vapors and liquids in the vicinity of
this or any other appliance.
WHATTO DO IFYOU SMELL GAS:
•Do not try to light any appliance.
• Do not touch any electrical switch. Do not use any phone in your building.
• Immediately call your gas supplier from a neighbor's phone. Follow the gas supplier's
instructions.
• If you cannot reach your gas supplier, call the fire department.
Installation and service must be performed by a qualified installer, service agency or
the gas supplier.
CONSUMER: RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE PURPOSES.
Note: ASME on the GX-200 only
HydroTherm _
IN UNITED STATES: 260 NORTH ELM ST. • WESTFIELD, MA 01085 •[phone]. FAX [phone]
IN CANADA: 5211 CREEKBANK RD.. MISSISSAUGA, ONT. L4W 1R3. [phone] . FAX [phone]
www.hydrotherm.com

Page 2 GX USERS INFORMATION MANUAL
CAUTION: Should overheating occur or the gas
supply fail to shut off, do not turn off or disconnect
the electrical supply to the pump. Instead, shut off the
gas supply at a location external to the appliance.
Do not use this appliance if any part has been under
water. Immediately call aqualified service technician
to inspect the appliance and to replace any part of
the control system and any gas control that has been
under water.
CONDENSATE DRAIN
This unit produces water as a byproduct of combustion.
Much of this water condenses on the heat exchanger
and in the venting system. Condensate must be drained
from the boiler into a household drain as shown in
Figure 1.
Figure 1 Condensate Piping
3. Do not seal the opening between the condensate
pipe and the condensate drain pipe, Figure 1. In the
event of a blocked drain the opening will allow the
condensate to overflow and prevent the boiler from
flooding.
4. Never have the drain pipe higher than the hole in the
back cabinet, this will flood the boiler.
5. Never allow the drain to freeze or become blocked.
This will cause condensate to fill the combustion
chamber resulting in a no heat condition and damage
to the boiler.
6. NEVER use copper, steel, or galvanized piping in
the construction of the condensate system.
7. When a condensate pump is used or required, select
a pump that is designed for residential furnaces.
BOILER MAINTENANCE
CAUTION: Servicing, inspection and adjustment
must be done by a trained technician in accordance
with all applicable local and national codes.
Improper servicing or adjustment could damage
the boiler!
FROM BOILER
CONDENSATE
SIPHON--_ --CONDENSATE
DRAIN PIPE
MUST NOT BE
SEALED
DRAIN MUST NOT
EXCEED HEIGHT
OF HOLE IN
CABINET
BACK PANEL CONDENSATE TRAP
AND DRAIN
Note: Check with your municipality, or local gas
company to determine if disposal of combustion
condensate is permitted.
The following are important rules that must be followed
when constructing the condensate system:
1. Connect the condensate trap to the drain using
1/2 in, 13 mm, silicone, rubber, reinforced nylon, or
PEX tubing.
2. Do not use nylon tubing, as it will collapse, blocking
drainage. This could damage the boiler.
The boiler should be cleaned and inspected once a year,
before each heating season. Each month the entire vent
system must be thoroughly inspected for any signs of
blockage, damage or leaks. Immediately replace any
unsound vent system piping. Remove any foreign matter
in or near the vent and air intake terminals.
Examine all flue product carrying areas of the boiler and
it's burner to ensure continued safe operation. Ensure
that there is no deterioration from corrosion or other
means. Any unsound flue gas carrying com-ponent must
be replaced!
Ensure that the condensate removal system is sound
and working properly.

Page3 GXUSERSINFORMATIONMANUAL
FOR YOUR SAFETY READ BEFORE OPERATING
WARNING: if you do not follow these instructions e×actly, afire or e×plosion may result
causing property damage, personal injury or loss of life.
A. This appliance does not have a pilot. It isequipped • If you cannot reach your gas supplier, call the fire
with an ignition device which automatically lights department.
the burner. Do not try to light the burner by hand.
a. BEFORE OPERATING smell all around the
appliance area for gas. Be sure to smell next to
the floor because some gas is heavier than air
and will settle on the floor.
WHAT TO DO IFYOU SMELL GAS
Do not try to light any appliance.
Do not tough any electric switch; do not use any
phone in your building.
Immediately call your gas supplier from a neighbor's
phone. Follow the gas suppliers instructions.
C. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will not
push in or turn by hand, don't try to repair it, call
a qualified service technician. Force or attempted
repair may result in a fire or explosion.
U. Do not use this appliance if any part has been
under water. Immediately call a qualified service
technician to inspect the appliance and to replace
any part of the control system and any gas control
that has been under water.
OPERATING INSTRUCTIONS
1. STOP! Read the safety information above. 5. Remove control access panel.
2. Turn off all electric power to the appliance.
3. Set the thermostat to lowest setting.
4. This appliance is equipped with an ignition device,
which automatically lights the burner. Do not try
to light the burner by hand!
MANIFOLD
PRESSURE _ GAS IN_
6. Turn the manual gas supply shut off valve clock-
wise _"4 k to the full "OFF" position.
7. Wait five (5) minutes to clear out any gas. Then
smell for gas, including near the floor. If you
then smell gas STOP! Follow "B" in the safety
information above. If you don't smell gas, go to
the next step.
8. Turn the manual gas supply shut off valve
counter-clockwise _ to"ON".
9. Replace control access panel.
10. Turn on all electric power to the appliance.
11. Set thermostat to desired setting.
12. If the appliance will not operate, follow the instruct-
tions "TO TURN OFF GAS TO APPLIANCE" and
call your service technician or gas supplier.
TO TURN OFF GAS TO APPLIANCE
1. Turn off all electric power to the appliance.
2. Set the thermostat to lowest setting.
3. Remove control access panel.
4. Turn the manual gas supply shut off valve clock-
wise _ to the full "OFF" position.
5. Replace control access panel.

HydroTherm
IN UNITED STATES: 260 NORTH ELM ST. •WESTFIELD, MA 01085 •[phone]. FAX [phone]
IN CANADA: 5211 CREEKBANK RD.. MISSISSAUGA, ONT. L4W 1R3. [phone]. FAX [phone]
www.hydrotherm.com