Glow T180 - Glow Brand
Instruction & Installation Manual
Model
Glow T180
Tankless Condensing Water Heater
188,000 BTU
ANSI Z21.10.3 CSA 4.3-2015
To Installer: Affix this manual adjacent to the appliance.
To Consumer: Retain these instructions for future reference
WARNING
If the information in these instructions is not followed exactly, a fire or explosion may result, causing property damage, personal injury
or death.
Do not store or use gasoline or other flammable vapours and liquids in the vicinity of this or any other appliance.
WHAT TO DO IF YOU 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 neighbour’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.
Glow Brand maintains a continuous improvement policy, specifications are subject to change without notice. We retain the right to alter
or modify this product at our discretion.
V.20170523
Glow T180
Tankless Condensing Water Heater
Table of Contents
1. General Information
1.1 Safety Information
3
1.2 General Warnings
3
1.3 Safety Warnings
5
1.4 Product Conformity
4.6 Gas Valve And Set Up
47
4.7 Adjusting The Gas Throttle
48
4.8 Set Point Temperature
49
5. Maintenance (Authorized Personnel)
11
2. Technical Characteristics
5.1 General Warnings
50
5.2 Maintenance 50
5.3 De-scaling and flushing
50
5.4 Water Heater Inspection
51
2.1 Technical Data
12
5.5 Accessing The Water Heater
52
2.2 Dimensions
13
5.6 Maintenance Operations
52
2.3 Unit Performance
14
5.7 Gas Supply Connections
55
2.4 Internal Parts Of The Water Heater
15
2.5 Display & Control Circuit Board
16
2.6 User Menu
18
2.7 Service Menu
19
2.8 Installer Selection
20
6. Lock Out And Warnings
7. Troubleshooting
3. Installation (Authorized Personnel)
3.1 Reference Standard
22
3.2 Unpacking
22
3.3 Installing The Water Heater
23
3.4 Domestic Hot Water
23
3.5 Recirculation Pump 32
3.6 Water Connections
33
3.7 Gas Connection
36
3.8 Electrical Connections
36
3.9 Venting
38
3.10 Venting Diagrams
40
46
4.2 Preliminary Operations
46
4.3 Flushing The System
46
4.4 Priming The Condensate Trap
46
4.5 Starting Up The Water Heater
47
7.1 Ignition Lock-Out
58
7.2 High Limit Or Microfuse Open
59
7.3 Flue Gas Temperature Exceeds The Limit
60
7.4 Block Flue Switch Open
61
7.5 DCW Inlet Sensor Failure
62
7.6 Heat Exchanger Outlet Sensor Open 63
7.7 DHW Sensor Open
64
7.8 Flue Sensor Open
65
7.9 No Hot Water
66
7.10 Resistance Value Versus Temperature
67
8. Parts List - Available From Glow Brand
4. Commissioning The Appliance
4.1 General Warnings
56
8.1 Cabinet And Interior
68
8.2 Water Connections
70
8.3 Electrical Connections
75
Warranty and Registration
Water Heater Commissioning Sheet
2
Glow T180
1. General Information
1.1 Safety Information
The following safety symbols are used in this manual.
Read and follow all instructions in this manual
precisely to avoid unsafe operating conditions, fire,
explosion, property damage, personal injury or death.
DANGER
Indicates an imminently hazardous
situation, which, if not avoided, could result
in severe injury or death.
WARNING
Indicates a potentially hazardous situation,
which, if not avoided , could result in severe
injury or death.
CAUTION
Indicates a potentially hazardous situation,
that, if not avoided could result in property
damage.
1.2 General Warnings
1.2.1 Installation
ΔΔ Read all safety warnings in the “Instruction &
Installation Manual”. The additional safety issues
outlined below must also be followed completely
when installing this Glow T180 Tankless Water
Heater.
ΔΔ Failure to remove or maintain the area free
of combustible material, gasoline and other
flammable liquids or vapors can result in severe
personal injury, death or substantial property
damage.
ΔΔ All applicable local, state, national and provincial
codes, ordinances, regulations and laws must be
observed.
ΔΔ For installations in Massachusetts – code requires
the units to be installed by a licensed plumber or
gas fitter.
ΔΔ The appliance cannot operate without the correct
amount of air for combustion. Please make sure
there is sufficient inflow and outflow of air for
ventilation; never obstruct the flow of ventilation
air. Failure to provide the proper amount of
combustion air can result in a fire or explosion
and cause death, serious bodily injury or property
damage.
3
Tankless Condensing Water Heater
ΔΔ If an external electrical source is utilized, the
appliance must be electrically grounded in
accordance with local codes or, in the absence
of local codes, with the National Electrical Codes
ANSI/NFPA 70 and or the CSA C22.1 Canadian
Electrical Code.
ΔΔ Follow all local codes and/or the most recent
edition of the National Fuel Gas Code (ANSI
Z223.1/NFPA 54) in the USA or the Natural Gas
and Propane Installation Code in Canada (CAN/
CSA B149.1).
ΔΔ This unit is designed for indoor installations.
DO NOT operate this unit without the vent
piping connected. Exhausted gases must be
completely expelled out of the building.
ΔΔ DO NOT use this appliance if any part has been
underwater. Immediately call a qualified service
technician to inspect and replace any part of the
control system and gas control which has been
underwater. Be sure not to reverse the water and
gas connections as this may damage the gas
valve.
ΔΔ Water temperatures over 120°F can cause
severe burns instantly or death from scalding.
If the proposed water heater outlet temperature
is above 120°F, a thermostatically controlled
mixing valve (or a temperature limiting valve)
for reducing point of use water temperature is
recommended to reduce the risk of scald injury.
Contact a licensed plumber or the local plumbing
authority for further information.
ΔΔ The appliance should be located in an
area where leakage within the unit or at its
connections will not result in damage to the area
adjacent to the appliance or to lower floors of the
structure. Glow Brand will not be responsible for
any damage resulting from leaking if adequate
drainage is not provided. When such locations
cannot be avoided, it is recommended that
a suitable drain pan, adequately drained, be
installed under the appliance.
ΔΔ DO NOT use this tankless water heater for any
purpose other than water heating and space
heating.
ΔΔ The flow of combustion air and ventilation to
the water heater must not be obstructed. The
water heater area must be kept clear and free
from combustible materials, gasoline and other
flammable vapors and liquids.
ΔΔ If the water quality is known to be highly acidic
and/or extremely hard, water treatments (such as
water softeners and filtration) are recommended
to maintain full warranty. Consult the local water
authority.
Glow T180
ΔΔ DO NOT over-tighten fittings, as pipe and/or fitting
damage may occur causing leakage.
ΔΔ DO NOT install the water heater where it is
subject to vibrations.
ΔΔ Should overheating occur or the gas supply fails
to shut off, turn off the manual gas control valve
to the appliance. Contact a Service Technician
immediately.
ΔΔ Clearance must be in accordance with the local
installation codes and the requirements of the gas
supplier.
ΔΔ Never operate the water heater unless it is vented
to the outdoors and has adequate air supply to
avoid risks of improper operation, fire, explosion
or asphyxiation.
ΔΔ DO NOT install this water heater directly on a
carpeted floor. A fire hazard may result. The
water heater must be installed and adequately
supported on a metal or wood panel extending
beyond the full width and depth of the water
heater by at least 3 inches (76.2mm) in any
direction.
ΔΔ For safe operation, an ample supply of air
must be provided for proper combustion and
ventilation in accordance with the National Fuel
Gas Code ANSI Z223.1/NFPA 54 National Fuel
Gas Code CSA/B149.1 Natural Gas and Propane
Installation Codes or applicable provisions of the
local building codes. An insufficient supply of air
may result in a yellow, luminous burner flame,
carboning or sooting of the heat exchanger, or
create a risk of asphyxiation. Do not obstruct the
flow of combustion and ventilation air.
ΔΔ This unit is not intended to operate at gas supply
pressures other than those shown on the rating
plate. Exposure to higher gas supply pressure
may cause damage to gas valves, which can
result in fire or explosion. If over-pressure has
occurred, such as through improper testing of
gas lines or emergency malfunction of the supply
system, the gas valve must be checked for safe
operation.
A thermostatic mixing valve must be added
to this system to prevent scalding, and as
per local codes and authorities.
1.2.2 Check The Rating Plate
ΔΔ Glow T180 water heaters come from the factory
configured for use with natural gas or propane.
Prior to installation, check the rating plate of
the water heater to ensure the unit matches
gas type, gas pressure, water pressure and
electrical supply. If the unit does not match the
requirements, do not install.
Tankless Condensing Water Heater
ΔΔ There is a risk in using fuel burning appliances in
rooms or areas where gasoline, other flammable
liquids or gas engine equipment or vehicles
are stored, operate or are repaired. Flammable
vapors are heavy and travel along the floor and
may be ignited by the igniter or main burner
flames causing fire or explosion. Some local
codes permit operation of gas appliances if
installed 18 inches or more above the floor.
Flammable items, pressurized containers or any
other potential fire hazardous articles must never
be placed on or adjacent to the water heater.
Open containers of flammable materials should
not be stored or used in the same room with the
water heater.
ΔΔ DO NOT install the Glow T180 water heater in
areas with excessive high humidity.
ΔΔ DO NOT install the unit in locations where there
is excessive humidity, such as a bathroom, damp
crawl space and other areas with high levels of
humidity. This may cause the unit to malfunction.
ΔΔ To avoid possible electrical shock, DO NOT touch
the internal components of the water heater or the
power cord with wet hands.
ΔΔ DO NOT splash excessive water on the water
heater when cleaning, as it is water resistant, not
water proof.
ΔΔ Professionally qualified personnel in accordance
with current laws and standards and in line with
the manufacturer’s instructions must install the
appliance.
ΔΔ The commissioning of the water heater and any
subsequent works carried out on the appliance
must be performed by an appropriately qualified
technician.
ΔΔ The appliance must be used solely for the
purpose for which it has been designed and
manufactured: Domestic hot water production
and central heating if applicable (maximum set
point of 63°C/145°F). Any other use is deemed
as improper and as such dangerous. Under no
circumstances will the manufacturer be held
responsible for damage or injury to persons or
animals caused by errors in the installation and/or
use of the appliance, or through non-compliance
with current local and national standards and/or
the manufacturer’s instructions.
ΔΔ The installation, operation and maintenance
manual are an integral and essential part of the
product and must be kept with the appliance
always.
ΔΔ The warnings contained in this chapter have been
written for the appliance user, the installer and the
service technician.
4
Glow T180
Tankless Condensing Water Heater
ΔΔ Any warranty repairs to the appliance must be
carried out exclusively by the manufacturer’s
authorized trained service dealers using
original parts. Non-compliance with the above
requirements may compromise the safety of the
appliance and invalidate the warranty. In order to
guarantee the efficiency of the appliance and its
correct operation, it must be serviced regularly by
professionally qualified personnel in line with the
manufacturer’s instructions.
ΔΔ Only original accessories or optional extras
(including electrical parts) must be used with the
appliance.
ΔΔ Should there be a smell of gas present in the
room where the appliance is installed, DO
NOT attempt to activate any electric switches,
telephones or any other equipment that may
cause sparks. Open doors and windows
immediately to create a current of air and
ventilate the room. Shut-off the main gas supply
valve (at the meter), or on the cylinder in the case
of propane gas, and call an authorized service
contractor.
Do not attempt to interfere with the appliance in any way.
ΔΔ As dictated by current legislation, this appliance
must be installed exclusively by qualified and
certified personnel. Before starting the water
heater for the first time, make sure that it is
connected to a water supply and central heating
system (maximum set point of 63°C/145°F)
compatible with its performance characteristics.
ΔΔ Prior to start-up, the water pipes should be
flushed to remove any residues that could
compromise the operation of the appliance.
ΔΔ The electrical supply must be checked by a
qualified electrician to ensure that it can support
the maximum power absorption of the appliance,
as indicated on the appliance rating plate. In
particular, make sure that the wire ratings are
adequate for the power being used.
ΔΔ Do not use adapters, multiple sockets or
extension cords to connect the appliance to the
power supply.
ΔΔ The appliance must be plugged into a 120v wall
receptacle in accordance with the current wiring
regulations.
ΔΔ If the wires are damaged in any way, switch off
the appliance and have the wire replaced by a
qualified technician.
ΔΔ When the appliance is no longer required for use,
unplug the unit from the wall receptacle and draw
water from the unit.
1.3 Safety Warnings
Carbon Monoxide Detectors
Many jurisdictions require the installation of carbon
monoxide detectors in buildings where a side wall
vented fuel burning appliance is installed. Installers
must abide by local code requirements regarding the
installation of CO detectors. The use of a certified
carbon monoxide detector is recommended but not
required by Glow Brand.
Chapters 3, 4, & 5 of this manual must
be read carefully as they provide information
on the installation, commissioning and
maintenance of the appliance.
ΔΔ After the removal of all the packaging, check that
the appliance has not been damaged. In case
of doubt, do not attempt to use the product but
refer to the supplier. Packing materials (cardboard
box, staples, plastic bags, polystyrene, etc.) must
not be left within reach of children in that these
items represent a potential hazard and must be
disposed of in a responsible manner.
ΔΔ Before carrying out any cleaning or maintenance
operations, disconnect the appliance from the
main electrical supply by unplugging the unit from
the wall.
ΔΔ In the case of a fault and/or malfunction in the
appliance, shut down the system. Do not interfere
with or attempt any repairs. Call for professionally
qualified technical assistance.
5
Glow T180
Tankless Condensing Water Heater
“In the State of Massachusetts only”
For all horizontally vented gas fueled equipment installed in every dwelling, building or structure used in
whole or in part for residential purposes, including those owned and operated by the Commonwealth and
where the side wall exhaust vent termination is less than seven (7) feet above finished grade in the area of
the venting, including but not limited to decks and porches, the following requirements shall be satisfied:
1. INSTALLATION OF CARBON MONOXIDE DETECTORS. At the time of installation of the side wall
horizontal vented gas fueled equipment, the installing plumber or gas fitter shall observe that a hard wired
carbon monoxide detector with an alarm and battery back-up is installed on the floor level where the gas
equipment is to be installed and on each additional level of the dwelling, building or structure served by the
equipment. It shall be the responsibility of the property owner to secure the services of qualified licensed
professionals for the installation of hard wired carbon monoxide detectors.
a.In the event that the side wall horizontally vented gas fueled equipment is installed in a crawl space or
an attic, the hard wired carbon monoxide detector with alarm and battery back-up may be installed on
the next adjacent floor level.
b.In the event that the requirements of this subdivision cannot be met at the time of completion of
installation, the owner shall have a period of 30 days to comply with the above requirements,
provided, however, that during said 30 day period a battery operated carbon monoxide detector with
alarm shall be installed.
2. APPROVED CARBON MONOXIDE DETECTORS. Each carbon monoxide detector as required in
accordance with the above provisions shall comply with NFPA 720 and be ANSI/UL 2034 listed and IAS
certified.
3. SIGNAGE. A metal or plastic identification plate shall be permanently mounted to the exterior of the
building at a minimum height of eight (8) feet above grade directly in line with the exhaust vent terminal for
the horizontally vented gas fueled heating appliance or equipment. The sign shall read, in print size no less
than one-half (1/2) inch in size, “GAS VENT DIRECTLY BELOW. KEEP CLEAR OF ALL OBSTRUCTIONS”.
4. INSPECTION. The state or local gas inspector of the side wall horizontally vented gas fueled equipment
shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide
detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a) 1 through 4.
Notice prior to installation
This appliance must be installed by a licensed professional in accordance with the Massachusetts Plumbing
and Fuel Gas Code 248 CMR Sections 2.00 and 5.00.
If you are not properly training, you must not install this unit.
6
Glow T180
Tankless Condensing Water Heater
7
Glow T180
Tankless Condensing Water Heater
8
Glow T180
Tankless Condensing Water Heater
9
Glow T180
Tankless Condensing Water Heater
DANGER
The temperature at which injury occurs varies with the person's age and time of exposure.
Water temperature over 125°F/52°C can cause severe burns instanly or death from scalding.
The slower response time of disabled persons increases the hazards to them. Never allow small children
to use a hot water tap, or to draw their own bath water. Never leave a child or disabled person unattended in a bathtub or shower.
The water heater should be located in an area where the general public does not have access to the
temperature control.
Lower water temperatures should be used to avoid the risk of scalding. It is further recommended, in all
cases, that the water temperature be set for the lowest temperature which satisfies the user’s hot water
needs. This will also provide the most energy efficient operation of the water heater and minimize scale
formation in the heat exchanger, thus prolonging the life of the unit.
Setting the water heater temperature at 120°F/49°C will reduce the risk of scalds. Some locations require
settings at specific lower temperatures. The table below shows the approximate time-to-burn relationship
for normal adult skin.
Hot water temperatures required for automatic dishwasher and laundry use can cause scalds and burns
resulting in serious personal injury and/or death.
Table - Risks of Scalds
Time to Produce 2nd, 3rd
Degree Burns on Adult Skin
Nearly instantaneous
About 1/2 second
About 1-1/2 seconds
Less than 5 seconds
About 30 seconds
More than 5 minutes
Temperature
Setting
Over 170°F/77°C
160°F/71°C
150°F/66°C
140°F/60°C
130°F/54°C
120°F/49°C or less
To protect against injury, you must install a tempering valve in the water system. This
valve will reduce point of discharge temperature by mixing cold and hot water in branch
supply lines. Such valves are available from the local plumbing supplier.
10
Glow T180
Tankless Condensing Water Heater
1.4 Product Conformity
All Glow T180 Tankless Water
Heaters are ETL certified and possess
technical and functional characteristics
that comply with the following
standards:
American National Standard/CSA
Standard for Gas Water Heaters
Volume III, Storage Water Heaters
with input Ratings above 75,000
Btu per Hour, Circulating and
Instantaneous. Conforms to ANSI
STD Z21.10.3, certified to CSA STD
4.3-2015.
The materials used, such as copper,
brass, stainless steel, etc. form a
compact, homogeneous, highly
functional unit that is easy to install
and simple to operate. In its simplicity,
the wall-mounted appliance is
equipped with all the appropriate
accessories required to make it
a fully independent water heater
capable of satisfying domestic hot
water production and central heating
(maximum set point of 63°C/145°F)
needs if installed. All water heaters
are fully inspected. This manual must
be kept in a safe place and must
accompany the water heater at all
times.
Glow Brand will not be held
responsible for any misinterpretation
of this manual.
UP
MENU
ENTER
DOWN
Glow Brand will not be held
responsible for the consequences
in the case of non-observance of
the instructions contained in this
manual or in the case where actions
not specifically described herein are
undertaken.
Figure 1.1 - Glow T180
11
RESET
Glow T180
Tankless Condensing Water Heater
2. Technical Characteristics
2.1 Technical Data
Glow T180
Heat Input (Max)
Heat Input (Min)
Energy Factor (EF)
Unified Energy Factor (UEF)
Domestic Hot Water
Heat Output (Max)
Hot Water Temperature Setting (min-max)
Maximum Water Pressure
Minimum Water Pressure
DHW Flow at ∆T 35°F
DHW Flow at ∆T 45°F
DHW Flow at ∆T 72°F
DHW Flow at ∆T 77°F
Minimum Activation Flow Rate
Dimensions (casing size)
Width
Height
Depth
Weight (NET)
Weight (GROSS)
Connections
Cold Water In
Hot Water Out
Gas Inlet Connection
Gas Supply
Inlet Pressure (min-max)
Gas Valve Outlet Pressure
Electrical Specification
Power Supply
Electrical Power Consumption
Btuh (kW)
Btuh (kW)
Btuh (kW)
°F (°C)
Psig (bar)
Psig (bar)
usgpm (lpm)
usgpm (lpm)
usgpm (lpm)
usgpm (lpm)
usgpm (lpm)
Table 2.1
Propane
194,000 (56.8)
20,500 (6.0)
99.3%
96.5%
188,000 (55.1)
188,000 (55.1)
102-145 (39-63)
150 (10.3)
30 (2.1)
10.7 (40.2)
8.4 (31.8)
5.2 (19.7)
4.9 (18.6)
0.6 (2.27)
In (mm)
In (mm)
In (mm)
Lbs (Kg)
Lbs (Kg)
16 ¾ (425)
24 ⅜ (619)
17 ¼ (438)
86 (39)
90 (41)
MPT
MPT
MPT
¾”
¾”
¾”
inch. wc.
inch. wc.
V/Hz
W
General
Installation Type
Venting Type
Ignition
Venting
Exhaust
Intake
Vent Clearances
Safety Devices
Natural Gas
194,000 (56.8)
20,500 (6.0)
99.2%
98.4%
3.5-10
-0.03
8-13
-0.03
120/60
119
Indoor Wall Hung
Forced Draft Direct Vent
Electronic Ignition
2, 2 ½, 3 in PVC, CPVC
2, 2 ½, 3 in PVC, CPVC, ABS
0 in to combustibles
Ionization Electrode, Ignition Software, Water Temperature
Sensors, Flue Temperature Sensor and Fuse, High Limit
Switch, Blocked Flue Switch & Power Fuse.
inch
inch
inch
12
Glow T180
Tankless Condensing Water Heater
2.2 Dimensions
16.5
6.7
5.7
5.6
EXHAUST
VENT
28.0
6.8
Legend
Gas Inlet
Ø 3/4” NPT
Cold Water Inlet
Ø 3/4” NPT
Hot Water Inlet
Ø 3/4” NPT
Condesate Outlet
Ø 1”
AIR
INTAKE
9.9
HOT WATER
OUTLET
GAS INLET
COLD WATER
INLET
11.6
17.2
2.1
6.8
3.5
2.9
Figure 2.1 - Glow T180 Dimensions
13
CONDENSATE OUTLET
11.1
Glow T180
Tankless Condensing Water Heater
2.3 Unit Performance
Temperature Rise Curve (Incoming Water 14°C/58°F)
°C / °F
Temperature Rise (Delta T)
66/ 150
52/ 125
38/ 100
33/ 75
19/ 50
-4 / 25
-18/ 0
0
1
2
3
4
5
6
7
8
9
10
11
Water Flow (GPM)
Table 2.2
Pressure Drop Curve (Incoming Water 14°C/58°F)
60
130
120
55
50
110
100
40
90
35
80
70
30
60
25
50
20
40
15
30
10
20
5
10
0
0
1
2
3
4
5
6
Water Flow (GPM)
Table 2.3
14
7
8
9
10
11
Pressure Loss (ft head)
Pressure loss (PSI)
45
Glow T180
Tankless Condensing Water Heater
2.4 Internal Parts Of The Water Heater
LEGEND
16. GAS CONNECTION
17. CONDENSATE HOSE
18. HOT WATER OUTLET
19. HOT WATER SENSOR
20. CONDENSATE TRAP
21. PRE MIX FAN
22. INLET WATER SENSOR
23. HEAT EXCHANGER OUTLET SENSOR
24. HI LIMIT SWITCH
25. IONIZATION ELECTRODE
26. FLUE SENSOR
27. 3/16” NYLON HOSE BARB
28. COMBUSTION ANALYZER PORT
29. EXHAUST FLUE ADAPTER
1. COMBUSTION AIR INLET ADAPTER
2. BLOCKED FLUE SWITCH
3. 3/16” BARBED TEE
4. IGNITION CONTROL BOARD (ICB)
5. STAINLESS STEEL HEAT EXCHANGER
6. IGNITION TRANSFORMER
7. IGNITION ELECTRODE
8. 3/16” DIA. SILICONE HOSE
9. PREMIXED BURNER ASSEMBLY
10. VENTURI ASSEMBLY
11. ELECTRONIC WATER FLOW SENSOR
12. GAS VALVE
13. DISPLAY BOARD
14. COLD WATER INLET
15. INLET WATER SCREEN
Figure 2.2- Water Heater internal parts
15
Glow T180
Tankless Condensing Water Heater
2.5 Display & Control Circuit Board
2.5.1 LCD Display
Figure 2.3- Water Heater display
2.5.2 Status Display Symbols
The table below describes the function of each symbol.
Status Symbol
Description
con – Connecting display with controller and start communication
ini – Initializing software
Standby
Preheat Domestic Hot Water
Domestic Hot Water demand: the temperature display shows the actual flow
temperature
Indicates appliance burner is ON
Alarm condition*: the alarm code is displayed (blinking) on the temp. display:
A xx = Lockout error number E xx = Blocking error number
Demand for frost protect is active, the temperature display shows the actual
flow temperature
Temperature in °Celsius, this value is displayed with a comma (e.g. 20,5 °C).
If the value of the temp. is set to °F, the °C- icon will not show
Located on top and bottom corner on the left side of the screen.
This symbol is shown when scrolling through the User menu.
Located on the top and bottom corner on the right side of the screen.
Indicates when the up/down buttons should be used to set a parameter.
Table 2.4
16
Glow T180
Tankless Condensing Water Heater
2.5.3 Control Button Layout
5 different buttons are present on the LCD Display for
operating the module. The buttons are positioned to the
right of the display. (see fig. 2.4)
With these five buttons various layouts are possible.
The display layout has the most frequent keys ([UP],
[ENTER] and [DOWN]) placed vertically in the middle,
which combines convenient navigation with a user
friendly look, due to the silicone keypad.
The table below describes the button functions. (Table
2.5)
Button
RESET
MENU
ENTER
UP
DOWN
UP
MENU
ENTER
RESET
DOWN
Figure 2.4- Control panel
Function Description
*Press and hold for 5 sec. to switch the display board ON or OFF.
* Press to reset the appliance in case of a Lock-out error or Press to cancel an altered
parameter
Press to enter the User menu or Press for 10 sec. to enter the Service menu
Press to confirm when you have selected a parameter or Press to confirm an altered setting
Scroll up or Increase the value (of a parameter)
Scroll down or Lower the value (of a parameter)
Table 2.5
2.5.4 Direct Adjustments of DHW Set point via Main Display Screen
The DHW set point can be directly adjusted in the main screen only when the unit is in standby [
In this case, the following icons are shown, including the set point temperature that is being altered.
Icons
].
Description
DHW set point can be altered by using the [UP] and [Down] buttons
Table 2.6
2.5.5 Error Displayed on Screen
In case of a Warning, Error-/Alarm condition, the Blocking (‘E’), Locking (‘A’) or Attenuations (‘n’) error will
continually flash. The User menu is inaccessible and can only be reset by pressing [RESET]. See section 6(‘Lock Out & Warnings’)
17
Glow T180
Tankless Condensing Water Heater
2.6 User Menu
Open the User view menu by pressing the [MENU] button once. This menu can be used to look at the values of a
selection of parameters (read-only parameters) or to view the sensor temperatures.
The scheme below shows how to operate of the User menu in some simple steps:
1. Enter the
User Menu
Press [MENU]
button once
2. Scroll though
Parameter List
Scroll through the
parameter list with the
[UP] / [DOWN]
buttons*
3. Select parameter
4. Alter value of
parameter
5. Confirm / cancel
alteration
Select a parameter to
alter/read-out it’s value
by pressing
[ENTER]* *
Alter a value of the
parameter with the
[UP] / [DOWN] buttons.
Confirm (save) with
[ENTER] or
Cancel with [RESET]
10 seconds of no
After saving/cancelling
10 seconds of no
When the parameter is
action automatically
you automatically return
action automatically
being altered, the value
return to the status
return to the status
on the display will blink. to the installer selection
screen.
(1).
screen.
* If these buttons are no longer operated for 2 sec. the parameter no. and the current value displayed will show with intervals of 2 sec.
** In case of a non-adjustable parameter, the current value will be displayed continuously.
Table 2.7
The following table describes of the parameters in the User menu, which are all read-only.
Paramater
Description
Value
100
101
102
103
108
111
140
141
142
143
151
152
153
154
155
157
158
159
160
Heat Exchanger outlet sensor
Outlet water sensor
Flue gas temperature sensor
Inlet water sensor
Ionization current
DHW pump status
Actual fan speed
Ignition fan speed
Minimum fan speed
Maximum fan speed
Last Lockout number
Last Blocking error
Number of flame failures
Number of successful ignitions
Number of failed ignitions
Total hours of operation for the DHW
Total days of operation of the burner
Interval between lockout errors
Interval between blocking errors
°C or °F
°C or °F
°C or °F
°C or °F
µA
Does Not Apply
X 10 RPM *
X 10 RPM *
X 10 RPM *
X 10 RPM *
#
#
#
#
#
X 10 Hrs**
Days
Minutes
Minutes
The
value of these parameters are given in RPM. Because the display can only show 3 digits, the number on the screen has to be multiplied times 10. For example, when the display shows the number 20, it means that RPM is 20x10, i.e. RPM is 200.
**
The value of this parameter is the number of hours times 10. For example, if the number on the display says 50, it means 50x10, which is
500 hours.
*
Table 2.8
18
Glow T180
Tankless Condensing Water Heater
2.7 Service Menu
The scheme below schematically shows how to operate of the Service Menu in some simple steps:
1. Enter the
Service Menu
2. Scroll though
Parameter List
Hold [MENU] for 5
seconds.
Display will alternately
flash parameter 207
and its value set point.
3. Select parameter
4. Alter value of
parameter
5. Confirm / cancel
alteration
Scroll through the
parameter list with
the [UP] / [DOWN]
buttons*
Select a parameter to
alter/read-out it’s
value by pressing
[ENTER]* *
Alter a value of the
parameter with the
[UP] / [DOWN] buttons.
Confirm (save) with
[ENTER] or
Cancel with [RESET]
10 seconds of no
action automatically
return to the status
screen.
10 seconds of no
action automatically
return to the status
screen.
When the parameter is
being altered, the value
on the display will
blink.
After saving/cancelling
you automatically
return to the installer
selection (1).
* If these buttons are no longer operated for 2 sec. the parameter no. and the current value displayed will show with intervals of 2 sec.
** In case of a non-adjustable parameter, the current value will be displayed continuously.
Table 2.9
The following table shows the available parameters in the Service menu.
Parameter
no.
207
Description
Value
Set point (Default 120°F/49°C)
Min.102°F - Max 145°F
(Min. 39°C - Max. 63°C).
208
210
Rest Function
System test power
ON (default), OFF
OFF: Don’t apply
rEg: Don’t apply
FAn: Fan rotates at maximum RPM
(Flow water through heater for following
tests)
Lou: Burner fires at minimum power
Ign: Burner fires at Ignition power
Hig: Burner fires at maximum power
214
260
261
280
281
Table 2.10
Display test (when [UP] button is pushed all
icons and LEDs will light-on. Press [RESET]
to go back to the settings menu. *
Don’t Apply
Don’t Apply
Service Reminder. Status jumps back.
Service Reminder setting
19
ON, OFF, rSt (Reset)
Days (in steps of 5)
Glow T180
Tankless Condensing Water Heater
2.8 Installer Selection
The Installer selection ensures that one control can control several different devices. The scheme below
schematically shows how to operate of the Installer Selection in some simple steps:
1. Enter the
Installer Selection
Power OFF unit
Remove power cord from
receptacle. Simultaneously
press and hold [MENU] &
[ENTER] while plugging in
the power cord. Continue
to hold [MENU] &
[ENTER] until the display
flashes ini & 300
alternately for 10 seconds.
It will rest at 302.
2. Scroll though
Parameter List
3. Select parameter
4. Alter value of
parameter
5. Confirm / cancel
alteration
Scroll through the
parameter list with the
[UP] / [DOWN]
buttons*
Select a parameter to
alter/read-out it’s
value by pressing
[ENTER]* *
Alter a value of the
parameter with the
[UP] / [DOWN]
buttons.
Confirm (save) with
[ENTER] or
Cancel with [RESET]
10 seconds of no
action automatically
return to the status
screen.
10 seconds of no
action automatically
return to the status
screen.
When the parameter
is being altered, the
value on the display
will blink.
After
saving/cancelling you
automatically return
to the installer
selection (1).
* If these buttons are no longer operated for 2 sec. the parameter no. and the current value displayed will show with intervals of 2 sec.
** In case of a non-adjustable parameter, the current value will be displayed continuously.
Table 2.11
The following parameters are available in the Installer selection.
Parameter
no.
302
Description
Value
Appliance selection model
1
303
Display units
°C/ °F (Stored in the internal memory)
312
DHW mode
Only select the following mode:
08: Tankless water heater
Don’t apply the following modes:
00: N/A
01: N/A
02: N/A
03: N/A
05: N/A
06: N/A
07: N/A
314
DHW mode preheat
dIS = Disabled (no preheat)
EnA = Enabled (preheat) default
317
DHW setpoint Max
160°F(70 °C)
(Stored in the internal memory, default value 70°C)
318
DHW setpoint Min
102°F(39°C)
(Stored in the internal memory, default value 39°C)
319
DHW mode preheat
00: Preheat Off mode
01: Anti freezing mode (Default)
02: Eco mode
03: Comfort mode
324
Temp. Lock Condition
EnA (Enabled) default, dIS (Disabled)
Table 2.12
20
Glow T180
Tankless Condensing Water Heater
ECO Mode: When the unit is set in ECO Mode,
the water within the heat exchanger is maintained
at 30°C/86°F. This mode allows the unit to fire
up momentarily in order to maintain a consistent
temperature within the heat exchanger.
Comfort Mode: When the unit is set to Comfort
Mode, the water within the heat exchanger is
maintained at 20°C/35°F less than the programmed
DHW set point. This mode offers the homeowner
the opportunity of having 1 gallon of water stored
within the heat exchanger at a higher temperature
than incoming water from the main. This operation
benefits the homeowner by reducing the “Cold
Water Sandwich” effect. See Table 2.13 for desired
storage temperature.
DHW SET POINT H.E. WATER TEMP
49°C/120°F
29°C/84°F * up to 52°C/125°F
55°C/130°F
35°C/95°F * up to 57°C/135°F
60°C/140°F
40°C/104°F * up to 63°C/145°F
63°C/145°F
43°C/110°F * up to 63°C/145°F
* approximate values
Table 2.13
DHW Set point cannot be set higher than
145°F/63°C for ECO and Comfort modes
Warning: IMPORTANT - Set point
temperature cannot exceed145°F/63°C in ECO or
Comfort mode when connected to a space heating
source that utlilzes a automatic DHW flush cycle.
Cycle duration sould not exceed 5 minutes every
24 hours.
A thermostatic mixing valve must be added
to this system to prevent scalding and as
per local codes and authorities.
DHW Lock Condition: Can be used to enable/
disable a ‘Temperature Lock Condition’ during
tapping of DHW; this means that you cannot adjust
the set point during tapping. If it is enabled and the
user presses UP/ DOWN the display will show ‘Loc’
to inform the user, this function is locked.
Table - Risks of Scalds
Time to Produce 2nd, 3rd
Degree Burns on Adult Skin
Nearly instantaneous
About 1/2 second
About 1-1/2 seconds
Less than 5 seconds
About 30 seconds
More than 5 minutes
Temperature
Setting
Over 170°F/77°C
160°F/71°C
150°F/66°C
140°F/60°C
130°F/54°C
120°F/49°C or less
To protect against injury, you must install a tempering valve in the water system. This
valve will reduce point of discharge temperature by mixing cold and hot water in branch
supply lines. Such valves are available from the local plumbing supplier.
21
Glow T180
Tankless Condensing Water Heater
3. Installation (Authorized Personnel)
only removed prior to installing the water heater.
The manufacturer will not be held responsible
for damage caused by incorrect storage of the
product.
ΔΔ Packing materials (plastic bags, polystyrene, etc.)
must not be left within reach of children, in that
these items represent a potential hazard.
3.1 Reference Standard
Install in accordance with local building and electrical
codes.
This appliance meets the requirements of:
American National Standard/CSA Standard for Gas
Water Heaters Volume III, Storage Water Heaters with
input Ratings above 75,000 Btu per Hour, Circulating
and Instantaneous Conforms to ANSI STD Z21.10.3,
certified to CSA STD 4.3-2015.
A. Place the packed appliance on the floor (see
fig. 3.1) making sure that the unit is in its
upright position. Open out the four flaps of the
box.
B. Rotate the packed appliance 180° so that the
top is upside down while manually supporting it
from underneath.
C.Lift the box and remove the foam packaging.
Lift the water heater by grasping the rear part
and proceed with the installation.
Failure to install a gas appliance correctly and in
accordance with the above norms could lead to
prosecution. It is in the interest of the installer and
safety that the codes are complied with.
The manufacturer’s instructions form an integral part of
the installation and should be left with the appliance but
do not over ride in anyway statutory obligations.
STORAGE & HANDLING
3.1.1 Installation Requirements
Please refer to local and national standards in force
with the country of destination of the product.
3.1.2 High Altitude Operation
The Glow T180 unit is designed to operate at its
maximum listed capacity in installations located at
0-2,000 ft above sea level. Since the density of air
decreases as elevation increases, maximum specified
capacity should be de-rated for elevations above 2,000
ft (610m) by 10%.
Any installation over 4,000 ft, the unit should be derated by 20%. Consult local authorities for de-rating for
altitudes above 4,500 ft (1,372m).
WARNING
Combustion – At elevation above 2,000 ft, the
combustion of the Glow T180 unit must be checked
with a calibrated combustion analyzer to ensure safe
and reliable operation. It is the installer’s responsibility
to check and adjust the combustion accordingly.
Failure to follow these instructions may result in
property damage, serious injury or death.
Figure 3.1 - Unpacking the water heater
Please note that prior to installation the Glow T180
water heaters should be stored in the horizontal
position with no more than three water heaters to a
stack; Ensure that the water heaters are stored in dry
conditions and the temperature does not drop below
0°C/32°F when in storage.
3.2 Unpacking
ΔΔ The materials (cardboard) used for packing the
appliance are fully recyclable.
ΔΔ It is recommended that the packing material is
22
Glow T180
Tankless Condensing Water Heater
3.3 Installing The Water Heater
X
The appliance must be securely installed
exclusively on a vertical solid wall capable of
supporting its weight. The water heater should be
installed within the building unless otherwise protected
by a suitable conditioned enclosure, i.e. garage.
L
Y
A
ΔΔ If the water heater is installed in an unheated area
it is recommended to leave the ON/OFF switch
always in the ON position in order to activate the
frost protection function
ΔΔ In order to allow access to the interior of the
water heater for maintenance purposes, it is
important that the minimum distances indicated
are respected. (Clearance Diagram)
H
B
When selecting the location for the placement of the
Glow T180 unit, make certain the wall can adequately
support the weight of the unit. Additional support such
as a piece of 3/4” plywood 24” by 36” may be required
To install the water heater, proceed as follows (see
Clearance Diagram):
1. Use a level to mark a horizontal line on the wall
where the water heater is to be installed.
2. Position the support bracket (see fig. 3.3) which
is supplied with the Glow T180 water heater
above the line drawn with the level, respecting the
distances indicated. Mark the center positions of
the two wall-plugs or anchors. Finally, mark the
positions of the water lines and gas pipe.
3. Once the bracket is firmly secured to the wall.
The Glow T180 unit can now be mounted on
the support bracket. Connect the domestic hot
and cold water pipes and the gas supply pipe.
You have the option of using field supplied NPT
service valve kit (preferred method) or field
supplied NPT to sweat adapter along with the
relief valve and bronze tee supplied with all units.
X
Y
0
0
L
H
A
B
20 24 12 12
Figure 3.2 - Clearance Diagram
Figure 3.3 - Support Bracket
3.4 Domestic Hot Water
Warning/ Hard Water
Clearance to Combustibles:
ΔΔ If this water heater is installed in an application
where the supply water is hard, it must be treated
with a water softener or filtration device which
removes the hardness, or by using sequestering
agents that reduce the amount of scale deposits.
ΔΔ Damage to the water heater as a result of water in
excess of 14.5 gpg (250mg/L) of hardness is not
covered by Glow Brand Limited warranty. If there
a problem with the water quality, contact your
local water conditioning company for equipment to
condition the water supply to this appliance.
Minimum clearance from combustible or non
combustible construction. (see fig. 3.2)
Front – 0 inches
Sides – 0 inches
Rear – 0 inches
Top – 0 inches from front panel
Service clearance - 24” front of unit
23
Glow T180
Tankless Condensing Water Heater
The water supply pressure at the inlet to the
water heater must be between 30 psi (2.15
bar) and 85 psi (6 bar).
3.4.2 Thermal Expansion Device
If this water heater is installed in a closed water supply
system, such as one having a back-flow preventer
in the cold water supply, provisions must be made
to control thermal expansion. DO NOT operate this
water heater in a closed system without provisions for
controlling thermal expansion.
In areas with higher water inlet pressure a
pressure reducing valve must be installed
before the water heater.
Cleaning the heat exchanger coil annually is
recommended. More frequent heat exchanger coil
cleaning is required based on the hardness of the
main water supply and the presence of residual solids
or impurities which are often present in the case of
a new installation. If the characteristics of the water
supply are such that require it to be treated, then an
appropriate treatment devices must be installed.
3.4.3 Inlet Screen
This unit comes complete
with a water inlet screen
which is factory installed in
the cold water inlet fitting.
Do not operate this unit
without the inlet screen in
place. Doing so can and
will cause serious damage
to the unit and will void the
warranty. Should there be
reduced water flow than what
is expected, the water inlet
screen may be dirty and needs
to be removed, cleaned or
replaced. (see fig. 3.4)
3.4.1 Water Supply Quality
CAUTION: This water heater MUST
ONLY be used with the following water supply
conditions to prevent product damage and
operation failure.
ΔΔ Clean, potable water free of corrosive chemicals,
sand, dirt or other contaminants.
ΔΔ Inlet water temperatures above 0°C (32°F), but
not exceeding 49°C (120°F)
ΔΔ DO NOT reverse the HOT and COLD water
connections
ΔΔ DO NOT connect this water heater to water lines
previously used for space heating. All water
piping and components shall be suitable for
potable water.
ΔΔ With recommended water quality (see table 3.1)
3.4.4 Water Supply Conditions
CAUTION: IMPORTANT – Do not apply heat to
the HOT and COLD water connections. If connections
are used, solder tubing to the adapter before fitting the
adapter to the water connection on the water heater.
Any heat applied to the water supply fittings will
permanently damage the internal components of the
water the water.
Water Quality Chart
pH
6.5-8.5
TDS (Total Dissolved
Solids)
Up to 500 mg/L
Free Carbon Dioxide (CO2)
Up to 15 mg/L
Total Hardness
Up to 150 mg/L
Aluminum
Up to 0.2 mg/L
Chlorides
Up to 200 mg/L
Copper
Up to 1.0 mg/L
Iron
Up to 0.3 mg/L
Manganese
Up to 0.05 mg/L
Zinc
Up to 1.0 mg/L
Figure 3.4 Inlet Screen
Plumbing should be carried out by a qualified
plumbing professional in accordance with local codes.
Only use approved plumbing materials.
To conserve energy and to prevent freezing, insulate
both HOT and COLD water supply lines. Do not
insulate the drain line or pressure relief valve.
IMPORTANT – Anti scald mixing valve
must be installed and as per local codes and
authorities.
Table 3.1
24
Glow T180
Tankless Condensing Water Heater
3.4.5 Condensate Drain
ΔΔ Keep the length of the condensate drain as short
as possible. Long runs or applications where
the nearest drain is above the water heater will
require the use of a condensate pump. Size
the pump to allow for a maximum condensate
discharge of 2 gpm from the water heater. The
end drain pipe must not be submerged in water or
blocked in any way.
ΔΔ Ensure the condensate is flowing freely from the
drain pipe after the system has been installed.
Condensate will begin flowing out of the water
heater within 2 minutes after operation has
started.
ΔΔ Do not run condensate lines outside and take
measures to prevent the condensate drain lines
from freezing (insulation, heat tape, electric
heaters, etc.).
ΔΔ Be sure to clean the condensate trap at least
once per year to prevent any problems, and
after cleaning be sure to check for any leaks of
condensed water or flue gas. (see Section 4.4)
ΔΔ The Glow T180 water heater is a high efficient
gas appliance that creates condensation when
it operates. A condensate trap and flexible drain
pipe come with each water heater and must be
installed below the cabinet.
The condensate trap must be primed before operation to prevent exhaust gases from
entering the building. (see Section 4.4)
ΔΔ Follow your local code with regards to the
disposal of condensation.
ΔΔ Here are several options for disposal of
condensate:
• From tankless water heater direct to drain
• From tankless water heater to neutralizer to
drain.
• From tankless water heater to laundry tub
(bottom of water heater must be above
the height of the laundry tub; must have a
negative slope to properly drain).
• From tankless water heater to condensate
pump to laundry tub (for long distances
between water heater and laundry tub or
when bottom of the water heater is installed
below height of the laundry tub).
ΔΔ Failure to install the condensate discharge
properly will affect the reliability of the water
heater.
All units installed with vertical exhaust must have a horizontal condensate tee piped to the drain and must be ULC S636 approved.
Failure to properly connect the condensate drain will cause combustion gases to enter the
room, possibly causing serious injury to
occupants or death. 3.4.6 Space Heating
ΔΔ Suitable for combination water (Potable) heating
and space heating (maximum set point of
63°C/145°F) and not suitable for space heating
application only.
ΔΔ Piping and components connected to the water
heater for the space heating application shall be
suitable for use with potable water.
ΔΔ Toxic chemicals, such as used for water heater
treatment, shall not be introduced into the potable
water.
ΔΔ A water heater which will be used to supply
potable water shall not be connected to any
heating system of component(s) previously used
with non-potable water heating appliance.
ΔΔ When the system requires water for the space
heating at temperatures higher than required for
other uses, a means such as a mixing valve shall
be installed to temper the water for those uses in
order to reduce scald hazard potential.
ΔΔ The water heater can be used for potable hot
water heating and space heating (maximum
set point of 63°C/145°F) applications. Note:
the illustrations in section 3.4.7 are conceptual
designs only. There are many design variations
of the equipment presented. Designers must
add all necessary safety and auxiliary equipment
to conform to Code requirement and proper
design practice. For more details, contact the
manufacturer or distributor.
ΔΔ Note: Check with your municipality, local codes,
or local gas company to determine if disposal
of combustion condensate is permitted. In the
State of Massachusetts the condensate must be
neutralized prior to entering a drain.
ΔΔ Use only PVC, Vinyl or CPVC pipe for the
condensate drain line. Metal pipe is not suitable
for condensate discharge.
ΔΔ The condensate drain line should be a minimum
of 1/2” diameter that connects to the 3/4” supplied
hose and must be supported to prevent sagging.
Manufacturer will supply a 3/4” to 1/2” reducer for
connection.
25
26
outlet
Figure 3.5
PRV valve
gas
inlet
120/ 1 /60
Glow T180 Water Heater (Suitable for combination
water (potable) heating and space heating and not
suitable for space heating only)
Anti-scald mixing valve
Must be installed
Hot Water Outlets
Glow T180 Water Heater
Pipe to drain
Ball Valve
Check Valve
Hose Bib
Domestic water supply
Expansion tank required if check
valve used in domestic water
supply (as per local codes)
Union
3.4.7 Schematics Of Piping Installation
Glow T180
Tankless Condensing Water Heater
27
Figure 3.6
PRV valve
outlet
gas
inlet
120/ 1 /60
120/ 1 /60
Instant Hot Water System
Part # 140-103
Pipe to drain
Ball Valve
Check Valve
Hose Bib
Domestic water supply
Expansion tank required if check
valve used in domestic water
supply (as per local codes)
Union
Anti-scald mixing valve
Must be installed
Hot Water Outlets
Thermal ByPass Valve (Located at farthest fixture
from appliance)
Cold Water Outlets
Glow T180 Water Heater (Suitable for
combination water (potable) heating
and space heating and not suitable for
space heating only)
Glow T180 Water Heater
Recirculation Cold Water Return Line
Glow T180
Tankless Condensing Water Heater
28
Figure 3.7
PRV valve
outlet
gas
inlet
Glow T180 Water Heater
(Suitable for combination
water (potable) heating
and space heating and not
suitable for space heating
only)
120/ 1 /60
120/ 1 /60
Recirculation Pump,
Part # 140-003
Hot Water Outlets
Must be installed
Pipe to drain
Ball Valve
Check Valve
Hose Bib
Domestic water supply
Expansion tank required if check
valve used in domestic water
supply (as per local codes)
Union
Anti-scald mixing valve
Aquastat, Part # GLO-180-80
Glow T180 Water Heater
Recirculation With Dedicated Return Line
Glow T180
Tankless Condensing Water Heater
29
Figure 3.8
120/ 1 /60
Conductors to
suit stat choice
T
gas
Airmax
Air Handler (c/w pump timer for potable water flush)
Three Speed Pump
Air Vent at Highest
Point
outlet
PRV valve
Glow T180 Water Heater
(Suitable for combination
water (potable) heating
and space heating and
not suitable for space
heating only)
inlet
120/ 1 /60
Glow T180 Water Heater with Airmax Fan Coil
Pipe to drain
Ball Valve
Check Valve
Hose Bib
Domestic
water supply
Union
Must be
installed
Anti-scald
mixing valve
Expansion tank required if
check valve used in
domestic water supply
(as per local codes)
Hot Water Outlets
Glow T180
Tankless Condensing Water Heater
30
Figure 3.9
120/ 1 /60
Conductors to
suit stat choice
T
gas
120/ 1 /60
inlet
120/ 1 /60
Cold Water Outlets
Domestic
water supply
Pipe to drain
Ball Valve
Check Valve
Hose Bib
Union
Instant Hot Water System
Part # 140-103
Must be
installed
Anti-scald
mixing valve
Expansion tank required if
check valve used in
domestic water supply
(as per local codes)
Hot Water Outlets
Thermal ByPass Valve (Located at farthest fixture from appliance)
Airmax
Air Handler (c/w pump timer for potable water flush)
Air Vent
at Highest
Point
Three Speed Pump
outlet
PRV valve
Glow T180 Water Heater
(Suitable for combination
water (potable) heating
and space heating and
not suitable for space
heating only)
Glow T180 Water Heater with Airmax Fan Coil
Recirculation Using Cold Water Return Line
Glow T180
Tankless Condensing Water Heater
31
Figure 3.10
120/ 1 /60
Conductors to
suit stat choice
T
gas
inlet
120/ 1 /60
120/ 1 /60
Recirculation Pump,
Part # 140-003
Airmax
Air Handler (c/w pump timer for potable water flush)
Air Vent
at Highest
Point
Three Speed Pump
outlet
PRV valve
Glow T180 Water Heater
(Suitable for combination
water (potable) heating
and space heating and
not suitable for space
heating only)
Glow T180 Water Heater with Airmax Fan Coil
Recirculation With Dedicated Return Line
Aquastat, Part # GLO-180-80
Pipe to drain
Ball Valve
Check Valve
Hose Bib
Domestic
water supply
Union
Must be
installed
Anti-scald
mixing valve
Expansion tank required if
check valve used if
domestic water supply
(as per local codes)
Hot Water Outlets
Glow T180
Tankless Condensing Water Heater
Glow T180
Tankless Condensing Water Heater
3.5 Recirculation Pump
Cold Water Return Line
Hot water Re-Circulation is allowed on the
Glow T180 tankless water heater, provided a factory
verified method is utilized. The appliance minimum
flow for operation is 0.6 gpm (2.27 lpm).
Option 2
Pump part # 140-103
Connection kit part # 529913 (1/2”) or,
Connection kit part # 529911 (3/4”)
Bypass Valve part # GLO-103-01
Flex Hose kit part # GLO -103-03 (3/8”x1/2”) 2 hoses
per kit
Dedicated Hot Water Return Line
Option 1
Pump part # 140-003
Aquastat part # GLO-180-80
Connection Kit part# 96806141 (1/2”) or,
Connection Kit part# 96806143 (3/4”)
See Figure 3.6 & 3.9 for system configuration.
The system is comprised of a pump with integral
time clock and cord set, thermal bypass valve, and
four flex connection hoses. It is not recommended
to operate the pump constantly without the time
clock functioning. Run time should not exceed 8 hrs
per 24 hr cycle. Doing so will alter the appliance
warranty period (as per Glow Brand standard
published warranty). The target system flow for this
option is 1 gpm and the allowable external pressure
drop is 12 ft.wg. Specific job head calculation is
the responsibility of the designer or installer. The
maximum water temperature allowed is 230 °F.
(See Figure 8.7 on page 74)
See Figure 3.7 & 3.10 for system configuration.
This system is comprised of a circulating pump,
connection kit with integral check valve, and
aquastat. This aquastat must be secured to the
dedicated return line as indicated. The pump will
operate once the supply line temperature is below
105 °F. Once the supply line reaches 115°F the
pump will shut off. It is not recommended to operate
the pump constantly without the aquastat connected.
Doing so will alter the appliance warranty period
(as per Glow Brand standard published warranty).
The target system flow for this option is 1.0 gpm
and the allowable external pressure drop is 19 ft.wg.
Specific job head calculation is the responsibility
of the designer or installer. The maximum water
temperature allowed is 230 °F.
(See Figure 8.7 on page 74)
Recirculation Pump Information
Demand initiated systems are strongly
recommended, however, due to their complexity
please contact Glow Brand for further information.
32
Glow T180
Tankless Condensing Water Heater
3.6 Water Connections
6.8
In order to safeguard the heat exchanger,
especially in case of water heater replacement, it
is recommended that the system is hot-flushed to
remove any impurities (especially oil and grease)
from the pipes.
9.9
HOT WATER
OUTLET
Make sure the water pipes are not used
to ground the electrical system. The pipes are
unsuitable for this purpose.
GAS INLET
COLD WATER
INLET
11.6
2.1
6.8
A sediment inlet water screen is supplied and
already installed in every unit. Do not allow water to
flow into the unit unless the dirt inlet water screen is
in place. Serious irreparable damage can occur and
void the warranty.
3.5
CONDENSATE OUTLET
2.9
11.1
Figure 3.13 - Water Heater Connections (inches)
Connection
3.6.1 Pressure Relief Valve And Tee
Operation and Maintenance Instructions
Should the installer choose not to use the isolation
valve kit, then a pressure relief valve and tee must be
used. Either kit is available from the manufacturer.
Installation
Size
Cold Water Inlet
3/4” NPT
Hot Water Outlet
3/4” NPT
Gas Connection
3/4” NPT
Condensate Outlet
1”
Table 3.2
The Pressure Relief Valve and Tee must be installed
in place of the optional Tankless Water Heater
Isolation Valve Kits in accordance with local code
requirements. In the event that these instructions
conflict with code requirements, the code shall take
precedence. (Figure 3.14 & 3.15)
ΔΔ Install the forged brass tee onto the hot water
outlet of the water heater. The pressure relief
valve is to be fitted into the branch port of the
tee. Be sure to use Teflon tape or approved
thread sealer when fitting the assembly together.
The outlet connection of the pressure relief valve
must face down.
ΔΔ The appropriate 3/4” adapters can be fitted to the
HOT and COLD water lines.
ΔΔ A pressure relief valve, complying with the
Standard for Relief Valves and Automatic Gas
Shut-Off Devices for Hot Water Supply Systems,
ANSI Z21.22/CSA 4.4, must be installed at the
HOT water outlet connection of the water heater
during installation. Local codes shall govern the
installation of any relief valve.
Glow T180
UP
MENU
ENTER
RESET
DOWN
TEE
PRESSURE
RELIEF
VALVE
OVER
FLOW
TUBE
TO DRAIN
DOMESTIC HOT
WATER OUT
DOMESTIC COLD
WATER IN
Figure 3.14 - Relief Valve Installation
IMPORTANT – Anti scald mixing valve
must be installed and as per local codes and
authorities.
Figure 3.15 - Tee and Pressure Relief Valve
NOTE: Must be rated for water heater use. The relief valve
must have a rating capacity of 500,000 BTU/H and 150/PSI
pressure rating. The drawing illustrates a pressure-only relief
valve.
33
Glow T180
Tankless Condensing Water Heater
3.6.2 Tankless Water Heater Isolation
Glow T180
Valve Kit
HOT
WATER
VALVE
An optional Tankless Water Heater Isolation
Valve Kit (fig. 3.16) is intended for installation
onto tankless water heater cold inlet and hot
outlet connections. Each assembly features union
connections, full-port, positive-shutoff ball valve
design and integral drain valves with capped hose
thread connections. They are available with 3/4” FIP
cold inlet and hot outlet connections.
UP
MENU
ENTER
RESET
DOWN
PRESSURE
RELIEF
VALVE
Isolation valves should be installed on the
water heater. This will facilitate all maintenance and
service operations when the water heater needs to
be serviced.
Remove the COLD water isolation inlet valve
assembly (identified by the blue handle) from the
packaging. Disassemble the union connection by
loosening the union nut and removing the tail piece
and gasket. Ensure that all components are present:
3/4” NPT tail piece, gasket, union nut and steel
nut retaining ring (installed onto the valve’s body).
NOTE: The union nut is permanently mounted to the
valve assembly.
OVER
FLOW
TUBE
COLD
WATER
VALVE
ROTATE
CLOCKWISE
FOR SERVICE
DOMESTIC HOT
WATER OUT
DOMESTIC COLD
WATER IN
Figure 3.16 - Optional Service Kit
Connect the valve assembly’s 3/4” NPT to the piping
cold water supply line. Use Teflon tape on the pipe
nipple’s external threads. Use the appropriate flux
and solder and verify that the isolation valve is in
the open position before sweating onto the copper
tubing. Make sure to position the valve assembly
in such a way that the handle and purge valve
stem are accessible and can be operated without
obstruction. Typically, this results in the drain valves
capped hose threads facing outward toward the user
or to the left, for the COLD isolation valve or right, for
the HOT isolation valve.
Figure 3.17 - Pressure Relief Valve and Isolation Valves
NOTE: Must be rated for water heater use. The relief valve
must have a rating capacity of 500,000 BTU/H and 150/PSI
pressure rating.
relief valve. In accordance with the water heater
manufacturer’s or local code requirements, install
and tighten the pressure relief valve into the 3/4”
female NPT connection located next to the drain
valve. Position the outlet of the pressure relief valve
downward.
Use the appropriate thread sealer (Teflon tape),
thread and tighten the 3/4” NPT tail piece onto the
water heater’s COLD water inlet.
Repeat the above procedures to install the HOT
water isolation outlet valve assembly onto the hot
water outlet connection of the water heater.
Verify that the gasket is centrally positioned onto
the tail piece. Reconnect the union nut to the nowinstalled tail piece. Using the appropriate wrenches,
brace the tail piece and tighten the union nut.
Remove the HOT water isolation outlet valve
assembly (identified by the red handle) and the
pressure relief valve from the packaging. Apply
Teflon tape to the male threads of the pressure
34
Glow T180
Tankless Condensing Water Heater
identification disc, allowing hot water to flow from the
end of the discharge pipe, into the drain. CAUTION!
Discharged water is extremely hot and can scald!
Avoid contact with the water. After a few seconds,
flip the lever back down, closing the valve. If the
pressure relief valve fails to flow water when opened
or fails to re-seat when closed, contact a qualified
installer for valve replacement.
3.6.3 Pressure Relief Valve Installation, Operation and Maintenance
DO NOT PLUG THE PRESSURE
RELIEF VALVE!
When tightening the pressure relief valve into
the hot water isolation valve, make sure to place
the wrench’s jaws on the relief valve’s wrench flats.
Applying force on any other part of the valve’s body
may cause irreparable damage.
For safe operation of the water heater, ensure that:
ΔΔ The pressure rating of the relief valve must not
exceed 150psi.
ΔΔ The BTUH rating on the relief valve must equal
or exceed the BTUH input of the water heater.
ΔΔ No valve of any type should be installed between
the relief valve and the water heater.
ΔΔ Discharge from the relief valve should be piped
to a suitable drain. Piping used should be of a
type approved for the distribution of hot water.
ΔΔ The discharge line must be no smaller that the
outlet of the relief valve. The drain line must
pitch downward to allow for complete drainage of
the line.
ΔΔ The end of the discharge line should not be
threaded or concealed and should be protected
from freezing. No valve of any type, restriction,
or reducer coupling should be installed in the
discharge line.
ΔΔ To prevent vibration and noise coming from the
system, do not use pipes of reduced diameter,
short radius elbows or severe reductions in the
cross sections of the water passages.
ΔΔ The water flowing out of the pressure relief
valve during its operation may be extremely hot.
Before operating relief valve, make sure drain
line is installed to direct discharge to a safe
location such as an open drain. Avoid scalding
and/or water damage.
ΔΔ Do not install any manually operated shutoff
valves between the relief valve’s inlet or outlet
connections and associated water heater or
discharge piping connections. Install the relief
valve’s inlet connection directly into the tankless
hot water heater isolation valve’s designated
connection only. An unobstructed flow path
must exist between the pressure relief valve
and water heater in order for the relief valve to
function properly.
ΔΔ The outlet connection of the pressure relief
valve must face downward, requiring a vertical
discharge pipe. In accordance with IPC code
requirement 504.6, install a suitable-length
nipple as a discharge pipe, into the female NPT
outlet of the pressure relief valve.
ΔΔ Do not reduce the 3/4” nominal pipe size (NPS)
at any length of the piping. The end of the
discharge pipe must not be threaded and must
remain open and unobstructed.
ΔΔ The discharge piping must not contain low
points, which may trap water. The piping must
allow complete drainage.
ΔΔ The discharge piping must discharge into a
suitable open drain and must not be allowed to
freeze.
A pressure relief valve is to be installed on the hot
water supply outlet line below water heater that
is rated in accordance and complying with The
Standard for Relief Valves and Automatic Shutoff
Devices for Hot Water Supply Systems, ANSI Z21.22
or CSA 4.4 Code.
Operation
In the event that the tankless water heater and its
piping system exceed designed pressure limits,
the pressure relief valve will automatically open,
discharging large amounts of very hot water. Correct
installation of the discharge piping and drainage
are critical in avoiding a scalding danger or water
damage.
Maintenance
Annually inspect the end of the discharge piping for
signs of relief valve leakage. Carefully lift the springloaded lever and center it horizontally against the
35
The pressure relief valve must be installed on the
hot water supply line and in such a manner that
the discharge is to be piped to a suitable drain for
disposal should relief occur. No reducing coupling
or other restrictive device is to be installed on the
discharge line. The discharge line must be installed
to allow complete drainage of both the service valve
if installed and the line itself.
Glow T180
Tankless Condensing Water Heater
ΔΔ The maximum inlet gas pressure must not
exceed the valve specified by the manufacturer
and the minimum valve listed for the purposes of
input adjustment.
ΔΔ The connection to the gas supply must be
carried out by professionally qualified personnel
in accordance with the relevant standards.
ΔΔ Check the internal and external seals of the gas
supply system.
ΔΔ A gas shut-off valve must be installed upstream
of the appliance.
ΔΔ Before starting up the water heater, make sure
that the type of gas corresponds to that for which
the appliance has been set-up.
ΔΔ The gas supply pressure must be between the
values reported on the rating plate.
ΔΔ If the power supply wire is damaged in any
way, switch off the appliance and have the wire
replaced by a qualified electrician.
3.7 Gas Connection
3.7.1 Gas Piping Guidelines
Follow all local codes and/or the most recent edition
of the National Fuel Gas Code (ANSI Z223.1/NFPA
54) in the USA or the Natural Gas and Propane
Installation Code in Canada (CAN/CSA B149.1).
3.7.2 Gas Supply Lines Pressures
Note warning applies to this entire section.
ΔΔ The minimum and maximum inlet gas pressures
for Natural Gas - Min. 3.5”WC – Max. 10.00”WC.
ΔΔ The minimum and maximum inlet gas pressures
for Liquid Propane Gas Min. 8.00”WC – Max.
13.00”WC.
ΔΔ Gas pressures over and above the specified
range will result in adverse performance and
dangerous operating conditions; any damage
resulting from extreme gas supply pressures will
not be covered by the limited warranty.
ΔΔ Until pressure testing of the main gas supply
line is completed, ensure the gas line to
the Glow T180 tankless water heater is
disconnected to avoid any damage to the water
heater.
ΔΔ The appliance and its individual shut off valve
must be disconnected from the gas supply
piping system during any pressure testing of that
system at test pressures in excess of 0.5 psi (3.5
kPa).
ΔΔ The appliance must be isolated from the gas
supply piping system by closing its individual
manual shut-off valve during any pressure
testing of the gas supply system at test
pressures equal to or less than 0.5 psi (3.5 kPa).
ΔΔ The gas appliance and it’s gas connections must
be leak tested before placing the appliance in
operation. Leaks can be found by using a gas
leak detection device or by applying soapy water
to all gas fittings. Should bubbles occur, tighten
those connections and re-test.
ΔΔ Always purge the gas line for any debris before
connecting to the water heater gas inlet.
ΔΔ Never use an open flame to test for gas leaks as
property damage, personal injury or death could
result.
When using an electrical appliance:
ΔΔ Do not touch the appliance with damp or wet
parts of the body or when barefoot.
ΔΔ Do not pull on the electric wires.
ΔΔ Do not allow the appliance to be used by
children or anyone unfamiliar with it’s operation.
3.8 Electrical Connections
3.8.1 General Warnings
Follow the electrical code requirements of the
local authority having jurisdiction. In the absence
of such requirements, follow the latest edition of the
National Electrical Code (NFPA 70) in the U.S. or
the latest edition of CGA C22.1 Canadian Electrical
Code – Part 1 in Canada.
36
Glow T180
Tankless Condensing Water Heater
ΔΔ Always check to make sure that the appliance
has a sufficient ground. This requirement is only
satisfied if it has been properly connected to an
efficient ground system installed in accordance
with the requirements of current safety
standards and carried out by professionally
qualified personnel.
ΔΔ This basic safety measure must be checked,
verified and carried out by professionally
qualified personnel.
3.8.2 Electrical Wiring: Ground And Surges
ΔΔ All units come with a factory installed 3-pronged
(grounded) 120 VAC plug. The tankless
water heater can be plugged into any standard
electrical duplex outlet close to the unit as it
requires only 1 Amp. Always check to make
sure that the appliance is securely grounded.
ΔΔ This requirement is only satisfied if it has been
properly connected to an efficient ground system
installed in accordance with the requirements
of current safety standards and carried out by
professionally qualified personnel.
ΔΔ The tankless water heater must be electrically
grounded. Ensure the electrical receptacle,
in which the water heater will be plugged into,
is properly grounded; if wiring directly, do not
attach the ground wire to either the gas or the
water piping as plastic pipe or dielectric unions
may isolate the water heater electrically.
ΔΔ The use of a surge protector is recommended to
protect from power surges.
ΔΔ Do not power the unit until all plumbing and gas
piping is complete and the unit has been filled
with water.
ΔΔ The electrical voltage required by the water
heater is 120VAC at 60Hz with a maximum
1 Amp rating with proper grounding. DO NOT
apply 220-240VAC or any other voltage to this
unit. This will damage the water heater and void
the warranty.
ΔΔ Do not disconnect the power supply when the
unit is in normal operation.
ΔΔ If there is a power failure in cold weather areas,
the freeze prevention system in the water heater
will not operate and may result in freezing of
the heat exchanger; in cold weather areas
where power failures are common, you must
completely drain the unit to prevent damage if
the power will be off for any extended period of
time.
ΔΔ Damage caused by freezing is not covered
under warranty.
ΔΔ CAUTION : Label all wires prior to disconnection
when servicing controls. Wiring errors can
cause improper and dangerous operation. Verify
proper operation after servicing.
ΔΔ The connection to the main power supply
must be carried out by professionally qualified
electrical personnel, registered in accordance
with current legislation and local authorities.
Have the electrical system checked by a
qualified electrician. The manufacturer will
not be held liable for any damage or injury
caused as a result of an inefficient or faulty
ground system.
If the unit fails to re-start after any fault,
unplug the unit for 30 seconds, then re-plug
in the unit and try to restart with the ON/OFF switch. If the unit fails to restart,
call a qualified technician for service.
ΔΔ Ensure the domestic power supply is checked
by a qualified electrician to ensure that it can
support the maximum power absorption of the
appliance, as indicated on the rating plate.
In particular, make sure that the cable sizes
are adequate for the power absorbed by the
appliance;
ΔΔ The power supply cable must be replaced by a
qualified electrician. If the cable is damaged in
any way, switch off the appliance and have the
cable replaced by a suitably qualified electrician;
ΔΔ When using an electrical appliance, a few
fundamental rules must be observed:
ΔΔ DO NOT touch the appliance with damp or wet
parts of the body or when barefoot.
ΔΔ DO NOT pull on the electric wires.
ΔΔ DO NOT allow the appliance to be used by
children or anyone unfamiliar with its operation.
37
Glow T180
Tankless Condensing Water Heater
3.9 Venting
ΔΔ All of the exhaust venting connections must be
leak checked with a soap solution upon initial
startup of the water heater. Any leaks must
be repaired before continuing operation of the
water heater.
ΔΔ Warranty will not be available if the water heater
is used for construction heat.
Improper venting of this tankless water heater
can result in excessive levels of carbon monoxide
which can result in severe personal injury or death.
This water heater must be vented in accordance
with the “Venting of Equipment” section of the latest
edition of the ANSI Z223.1 / NFPA 54 Natural Gas
Code and/or the “Venting systems and air supply
for appliances” section of the latest version of
the CAN/CSA B149.1 Natural Gas and Propane
Installation Code in Canada and in accordance with
all applicable local building codes.
3.9.4 Exhaust Vent Piping Materials
ΔΔ Use only 2”, 2 ½”, or 3” solid PVC/CPVC
schedule 40 PVC/CPVC or ULC S636 pipe and
fittings.
ΔΔ Venting requirements in USA and Canada are
different. Please consult with the most recent
edition of the National Fuel Gas Code (ANSI
Z223.1 / NFPA 54) or CAN/CSA B-149.1 as well
as local codes for applicable venting regulations
and restrictions.
ΔΔ For installation in Canada, field supplied plastic
vent piping must comply with CAN/CSA B-149.1
(latest edition) and be certified to the standard
for type BH Gas Venting Systems. ULC S636
components of this listed system shall not
be interchanged with other vent systems or
unlisted pipe/fittings. All plastic components and
specified primers and glues of the certified vent
system must be from a single manufacturer and
not intermixed with other system manufacturer’s
vent system parts. The supplied vent adapters
are certified as part of the water heater.
ΔΔ Units installed with vertical exhaust, must
have an additional approved condensate drain
installed on the horizontal section of the exhaust
vent. Fittings must be ULC S636 approved.
ΔΔ Schedule 40 PVC/CPVC pipe/fittings have been
approved for use on this appliance with zero
clearance to combustibles.
ΔΔ This water heater requires a special venting
system. Refer to the installation instructions for
parts list and method of installation.
ΔΔ Use of cellular core Schedule 40 PVC
(ASTM F891), cellular core CPVC, or Radel
(polyphenylsulfone) in non-metallic venting
systems is prohibited. Covering non-metallic
vent pipe and fittings with thermal insulation is
prohibited.
3.9.1 Venting Guidelines
ΔΔ For best results, keep the vent system as short
and straight as possible.
ΔΔ Locate the tankless water heater as close as
possible to the vent termination.
ΔΔ The water heater vent must not be common
vented with any other gas appliance or vent
stack.
ΔΔ Slope vent upwards towards the vent terminal at
a rate of 1/8” per foot (1% slope).
ΔΔ Vent termination must be a minimum of 12”
above grade or expected snowfall.
ΔΔ Vent and air intake pipe must be supported
every 4 feet of horizontal run and every 5 feet of
vertical run.
3.9.2 Glow T180 And Direct Vent
ΔΔ All Glow T180 tankless water heaters are
manufactured as a direct vent unit (sealed
combustion), which draws combustion air
directly from outside the building.
ΔΔ This Glow T180 water heater uses a
3” diameter exhaust and 3” diameter air intake
pipe.
ΔΔ The air intake vent materials can be made of
Schedule 40 ABS, PVC, or CPVC materials and
in accordance with all applicable local building
codes.
3.9.3 Contaminated Make-Up Air Will Damage The Unit
ΔΔ Recommend not to operate the tankless
water heater in an area that is or will be under
construction or renovation.
ΔΔ The Glow Brand warranty will not cover
damage and premature wear caused to the
unit due to installation in a contaminated
environment.
38
Glow T180
Tankless Condensing Water Heater
3.9.5 Intake Vent Pipe Materials
Available Vent Lengths
ΔΔ Schedule 40 PVC, CPVC or ULC S636 pipe
and fittings and ABS pipe and fittings can be
used for combustion air intake on Glow Brand
products.
ΔΔ Transition cement must be used if ABS pipe is
connected to the PVC appliance adapters.
ΔΔ All plastic components and specified primers
and glues of the certified vent system must be
from a single manufacturer and not intermixed
with other system manufacturers vent system
parts.
ΔΔ The vent for this appliance shall not terminate
over public walkways, near soffit vents, crawl
spaces or other areas where condensate or
vapour could create a nuisance or hazard or
cause property damage or where condensate
vapour could cause damage or could be
detrimental to the operation of regulators, relief
valves of other equipment.
Model
Glow T180
Size
2”, 2 ½” or 3” Diameter
Max Equivalent Length 2” Diameter =25ft
Vertical and Horizontal 2 ½” Diameter =50ft
3” Diameter =100ft
per Vent Run
Type
Natural Gas/
Liquid Propane
Exhaust Vent
Schedule 40 PVC/
CPVC
Intake Vent
Schedule 40 PVC,
CPVC or ABS
Table 3.3
Equivalent Lengths
ΔΔ Reduce the maximum vent length accordingly
for each elbow used.
ΔΔ Each 3” 45° elbow equates to 2.5 linear feet of
vent pipe.
ΔΔ Each 3” 90° short radius elbow equates to 7.5
linear feet of vent pipe.
ΔΔ Each 3” 90° long radius elbow equates to 5
linear feet of vent pipe.
ΔΔ The maximum length listed is for exhaust vent
only. The intake length should be equal length.
ΔΔ The total maximum equivalent vent pipe
distance cannot exceed 100ft for horizontal and
vertical venting distance.
ΔΔ The maximum lengths include elbows.
ΔΔ Exceeding the maximum venting distance may
cause the appliance to malfunction or cause an
unsafe condition.
Minimum Vent Lengths
2” Diameter - 6” pipe (Length) plus one elbow.
2 ½” Diameter - 6” pipe (Length) plus one elbow.
3” Diameter - 6” pipe (Length) plus one elbow.
39
Glow T180
Tankless Condensing Water Heater
3.10 Venting Diagrams
3.10.1 Venting Clearances - Direct Vent
*All clearance requiremnts are in accordance with ANSI Z21.10.3 and the National
Legend:
V
X
= Vent terminal
= Air supplu inlet
= Area where terminal is not permitted
Canadian Installations1
A
Clearance above grade, veranda,
porch deck or balcony
B
Clearance to window or door that
may be opened
C
Clearance to permanently closed
window
D
Vertical clearance to ventilated
soffit located above the terminal
within a horizontal distance of
2 feet from the center of the
terminal
US Installations2
12 in (30 cm)
12 in (30 cm)
6 in (15 cm) for appliances
≤ 10,000 BTUh (3kW),
12 in (30cm) for appliances
> 10,000 BTUh (3kW) and
< 100,000 BTUh) (30kW),
36 in (91 cm) for appliances
> 100,000 BTUh (30kW)
6 in (15 cm) for appliances
≤ 10,000 BTUh (3kW),
9 in (23 cm) for appliances
>10,000 BTUh (3kW) and
≤ 50,000 BTUh) (15kW),
12 in (30 cm) for appliances
> 50,000 BTUh (15kW)
Table 3.4
*
*
*
*
(continued)
40
Glow T180
Tankless Condensing Water Heater
Canadian Installations1
US Installations2
*
*
*
*
*
*
*
*
E
Clearance to unventilated soffit
F
Clearance to outside corner
G
Clearance to inside corner
H
Clearance to each side of centre
line extended above meter /
regulator assembly
I
Clearance to service regulator vent Above a regulator within
outlet
3 ft (91 cm) horizontally of
the vertical center line of
the regulator vent outlet to a
maximum vertical distance
of 15 ft (4.5 m)
J
Clearance to non mechanical air
supply inlet or combustion air inlet
to any other appliance
6 in (15 cm) for appliances
≤ 10,000 BTUh (3kW),
12 in (30cm) for appliances
> 10,000 BTUh (3kW) and
< 100,000 BTUh) (30kW),
36 in (91 cm) for appliances
> 100,000 BTUh (30kW)
K
Clearance to mechanical air supply
inlet
6 ft (1.83 m)
L
Clearance above paved sidewalk
or paved driveway located on
public property
M
Clearance under veranda, porch
deck or balcony
*
6 in (15 cm) for appliances
≤ 10,000 BTUh (3kW),
9 in (23 cm) for appliances
>10,000 BTUh (3kW) and
≤ 50,000 BTUh) (15kW),
12 in (30 cm) for appliances
> 50,000 BTUh (15kW)
3 ft (91 cm) above if within
10 ft (3 m) horizontally
7 ft (2.13 m)+
*
12 in (30 cm)++
*
Table 3.4 (continued)
* For clearances not specified in ANSI Z223.1/NFPA 54 or CSA B149.1, one of the following shall be indicated:
A) a minimum clearance value determined by testing in accordance with Clause 5.21, Draft hoods, or
B) a reference to the following footnote:
“Clearance in accordance with local installation codes and the requirements of the gas supplier.”
+ A vent shall not terminate directly above or sidewalk or paved driveway that is located between two single family
dwellings and serves both dwellings.
++ Permitted only if veranda, porch, deck, or balcony is fully open on a minimum of two sides beneath the floor.
Notes:
1) In accordance with the current CSA 8149.1, Natural Gas and Propane Installation Code
2) In accordance with the current ANSI Z223.1/ NFPA 54, National Fuel Gas Code
41
Glow T180
Tankless Condensing Water Heater
3.10.2 Venting Materials
VERTICAL VENT TERMINATION - PVC/CPVC MATERIAL ONLY 2”, 2½” OR 3”
VERTICAL INTAKE - ABS OR PVC/CPVC MATERIAL 2”, 2½” OR 3”
OPTIONAL COUPLING OR 45° ELBOW WITH
OPTIONAL 1/2" x 1/2" GALVANIZED SCREEN
(SUPPLIED BY MANUFACTURER) INTO EXHAUST
END
MINIMUM 24" APART IN ANY
DESIRED POSITION ON THE
ROOF
24" (61 cm)
1/2" x 1/2" GALVANIZED SCREEN
(SUPPLIED BY MANUFACTURER) IN END
OF 45° ELBOW
(OPTIONAL)
FLASHING
EXHAUST
PVC
OR
CPVC
12" (18" CANADA)
ABOVE HIGHEST EXPECTED
SNOW LEVEL
INTAKE
ABS OR
PVC/CPVC
* THE AIR INLET AND EXHAUST PIPE CAN BE LOCATED
IN ANY DESIRED POSITION ON THE ROOF, BUT MUST
ALWAYS BE MINIMUM 24" APART.
SUPPORT
A PROPER FLASHING SHOULD BE USED TO SEAL THE
PIPE WHERE IT EXITS THE ROOF.
THE VENT SYSTEM MUST TERMINATE SO THAT THE
PROPER CLEARANCES ARE MAINTAINED AS CITED IN
LOCAL CODES OR THE CURRENT EDITION OF THE
NATURAL GAS AND PROPANE INSTALLATION CODE
(CAN/CSA-B-149.1) AND ANSI
Z223.1/NFPA54.
SEE INSTALLATION
SECTION 3.9.5
SLOPE VENT
UPWARDS
HANGER
STRAP
PROVIDE SUPPORT FOR ALL PIPE PROTRUDING
THROUGH THE ROOF. ALL PIPEING SHOULD BE
SECURED. THE VENT SYSTEM SHOULD BE
SUPPORTED EVERY 5 FEET (1.5m) OF VERTICAL RUN
AND EVERY 3 FEET (1.0m) OF HORIZONTAL RUN. ALL
PIPING AND FITTINGS MUST BE JOINED BY THE PROPER
PROCEDURES AS DESCRIBED UNDER VENT
PREPARATION.
PVC
ADAPTER
WHEN USING A HORIZONTAL SECTION, SLOPE THE
HORIZONTAL VENT 1/8" UPWARDS TOWARDS FOR
EVERY 12" (30 cm) (1% SLOPE) TOWARDS THE
TERMINATION TO THE DRAIN CONDENSATE.
TO DRAIN & DISPOSE OF
CONDENSATE
ACCORDING TO LOCAL
CODES
EXHAUST VENT PIPE THROUGH AN UNHEATED SPACE
MUST BE INSULATED AS PER LOCAL CODES AND
AUTHORITIES.
* ALL VERTICAL EXHAUST VENTING MUST HAVE AN
ADDITIONAL CONDENSATE DRAIN. ALL FITTING MUST
BE ULC S636 APPROVED.
42
Glow T180
Tankless Condensing Water Heater
3.10.3 Horizontal Venting
HORIZONTAL VENTING - PVC/CPVC/ABS MATERIAL ONLY 2”, 2½”, or 3”
EXHAUST
PVC/CPVC
OPTIONAL COUPLING WITH OPTIONAL
1/2" x 1/2" GALVANIZED SCREEN
(SUPPLIED BY MANUFACTURER)
INTO THE EXHAUST END
MIN 10"
WINDOW
12" (30 cm) ABOVE GRADE
OR EXPECTED SNOW FALL
EXHAUST
INTAKE
12" (30 cm) ABOVE GRADE
OR EXPECTED SNOW FALL
MIN. 6" (15 cm) CENTER TO CENTER
OUTSIDE WALL
ABS OR
PVC
90° ELBOW ABS
OR PVC
MUST INSERT 1/2" x 1/2" GALVANIZED SCREEN
(SUPPLIED BY MANUFACTURER) IN END OF 90°
ELBOW (OPTIONAL)
WINDOW
INTAKE VENT PIPING TO BE SLOPED (DOWN)
TOWARD UNIT TO PREVENT WATER
FROM COLLECTING
OPTIONAL
SCREEN INTO
90° ELBOW END
OPTIONAL:
LOW PROFILE SIDE WALL
TERMINATION KIT 2” or 3"
MUST BE ULC S636 APPROVED.
EXHAUST
MIN. 8" (20 cm)
MAX. 24" (60 cm)
INTAKE
OUTSIDE WALL
43
12" (30 cm) ABOVE GRADE
OR EXPECTED SNOW FALL
Glow T180
Tankless Condensing Water Heater
3.10.4 Concentric Vent Termination
CONCENTRIC VENT TERMINATION - 2” or 3” PVC
Dimensions (inches)
2” Concentric Kit
3” Concentric Kit
Nominal Pipe
Size
A
B
C
29
36.1
16.5
20.5
3.5
4.5
D
2
3
E
2
3
ROOF TERMINATION
VERTICAL EXHAUST
COMBUSTION
INTAKE AIR
FLASHING
(FIELD SUPPLIED)
12” (18” CANADA)
ABOVE HIGHEST EXPECTED
SNOW LEVEL
HANGER STRIP
(FIELD INSTALLED)
COMBUSTION
INTAKE AIR
EXHAUST
HANGER STRIP
(FIELD INSTALLED)
1" MIN
2" MAX
EXHAUST
EXHAUST
COMBUSTION
INTAKE AIR
WALL
COMBUSTION
INTAKE AIR
12” (30cm) ABOVE GRADE
OR EXPECTED SNOWFALL
OPTIONAL 1/2” X 1/2”
GALVANIZED SCREEN
(SUPPLIED BY MANUFACTURER)
INTO THE EXHAUST END
NOTE: USE ONLY ULC S636 APPROVED CONCENTRIC VENT TERMINATION - 2” or 3” PVC
44
Glow T180
Tankless Condensing Water Heater
3.10.5 Concentric Vent Termination
CONCENTRIC VENT TERMINATION - PVC MATERIAL ONLY 2” or 3”
WINDOW
48" MIN.
12" (30 CM) ABOVE
HIGHEST EXPECTED
SNOW LEVEL
MIN 12"
CENTER TO CENTER
12" MINIMUM
OUTSIDE WALL
EXHAUST
COMBUSTION
INTAKE AIR
12" (18" CANADA) ABOVE
HIGHEST EXPECTED
SNOW LEVEL
OPTIONAL 1/2" x 1/2" GALVANIZED SCREEN
(SUPPLIED BY MANUFACTURER)
INTO THE EXHAUST END
45
Glow T180
Tankless Condensing Water Heater
4. Commissioning The Appliance
ΔΔ Check that there are no flammable materials
or liquids in the immediate vicinity of the water
heater.
4.1 General Warnings
The following operations must be carried out
by professionally qualified personnel, registered in
accordance with current legislation.
4.3 Flushing The System
Failure to flush the system will invalidate the
appliance warranty.
Warranty will not be covered if unit is not
commissioned by a certified Glow Brand contractor.
All systems must be thoroughly drained
and flushed out using additives or flushing
agents/de-scalers. All flushing must be
done for new and retrofit installs.
The water heater leaves the factory preset
and tested for burning either natural Gas or LPG.
Nevertheless, prior to starting the water heater for the
first time, make sure that the information on the rating
plate corresponds to the type of gas being supplied
to the water heater.
Warning: Failure to clean the system
invalidates the warranty.
Once the system has been filled and the
necessary adjustments made, remember to tighten
the screws of the gas valve test port and make sure
that there are no gas leaks from the test port and
from any pipe fittings upstream of the gas valve.
To flush out domestic hot water circuit:
1. Open all hot water outlets and airhandler drain
cocks. (if so equipped)
2. Open the main water valve to allow water to
enter the water heater; allow water to flow.
Leave to fill until water is released from the hot
water outlets. Turn off all hot water outlets.
3. Connect a hose pipe to the cylinder drain cock
and open the drain cock.
4. Allow water to flow through the water heater
and air handler and out of the drain cock. (if so
equipped)
5. Turn off water supply, disconnect the hosepipe,
close the drain cock and refill the water heater
and air handler. (if so equipped)
4.2 Preliminary Operations
Switching the water heater on for the first time
means checking that the installation, regulation and
operation of the appliance are correct.
ΔΔ Check that the rating on the rating plate
corresponds to that of the main supply networks
(gas, electricity, water).
ΔΔ Check that the power supply voltage to the water
heater complies with the rating plate (120 V – 60
Hz) and that the live, neutral and ground wires
are connected properly. Also make sure that the
ground connection is sound.
ΔΔ Check that the gas supply is correctly sized for
the flow rate required by the water heater and
that it is fitted with all the safety and control
devices stipulated by current regulations.
ΔΔ Check that the supply of combustion air and
exhaust and condensate discharge systems are
functioning correctly and in line with current law
and national and local standards.
ΔΔ Check for the presence of permanent aeration/
ventilation openings as required by current law
for the type of appliances installed.
ΔΔ Check that the exhaust vent and its connections
to the termination comply with the requirements
of current law and national and local standards
for the type of appliances installed.
ΔΔ Check that the condensate drain system,
including outside the water heater (exhaust
system condensate collection devices), allows
the condensate to flow freely to the drain.
4.4 Priming The Condensate Trap
The condensation trap must be filled when starting
the water heater for the first time in order to prevent
flue gases from flowing back through the trap. (see
figure 4.1)
Attention! It is recommended to clean the
condensate trap, after a few months of water heater
operation, to remove deposits/residuals left after the
first condensate passage within the water heater
new components that may interfere with the correct
operation of the trap itself.
Remove the condensate trap and clean it with a
soapy solution.
46
Glow T180
Tankless Condensing Water Heater
light the burner. This operation is repeated
for 3 times. It may be necessary to repeat the
operation in order to eliminate all the air from
the gas line. To repeat the operation, wait
approximately three minutes before reattempting
to light the water heater. To reset the water
heater, press the [RESET] button and hold for 3
seconds then release.
BLOCK VENT
SWITCH
EXHAUST
ADAPTER
COMBUSTION
ANALYZER
PORT
4.6 Gas Valve And Set Up
This water heater has been set up from the factory
for normal operation, however it is required to
complete a system check of the components and
preform a combustion analysis prior to completing
the installation. The system check consists of the
following:
ΔΔ Check and measure the gas pressure available
from the source. 7” w.c. is the nominal pressure
required for (NG), 11”w.c. (LP).
ΔΔ Check and ensure that 120v is available at the
outlet
ΔΔ Check for correct polarity
ΔΔ Ensure the hot and cold water supplies are
piped correctly to the water heater.
ΔΔ Ensure the relief tube is piped to the pressure
relief valve and the condensate hose is to a
drain
ΔΔ Either a service valve kit or a tee and relief valve
is to be installed on the water heater
ΔΔ Once the unit has be plugged in, verify that all
safety devises are operational (hi limit switch,
micro fuse, blocked flue sensor, see Section 5.5)
ΔΔ Once a demand for hot water is made, sounds
emitted from the heat exchanger are normal
until all air has been eliminated from the heat
exchanger
ΔΔ The water heater must be operating at maximum
capacity in order to complete a combustion
analysis (see adjusting the throttle).
BARB
FITTING
HOSE
CONNECTING
TEE
3/16”
SILICONE
HOSE
PLUG
CONDENSATION
TRAP
1” CONDENSATE
HOSE
Figure 4.1 - Condensate trap connections
4.5 Starting Up The Water Heater
Once the system has been filled, proceed as follows:
ΔΔ Check that the exhaust flue is free of
obstructions and correctly connected to the
water heater.
ΔΔ Plug the power cord of the water heater into
the wall receptacle and make certain the unit is
operational.
ΔΔ Open the gas cock supplying the unit.
ΔΔ Create a call for hot water by opening a hot
water faucet; The faucet icon will start to flash
and a flame icon will appear.
ΔΔ The automatic ignition system will attempt to
47
Glow T180
Tankless Condensing Water Heater
4.7 Adjusting The Gas Throttle
Throttle Adjustment
Each Glow T180 unit is factory set to operate with
Natural Gas or Liquid Propane. These units cannot
be field converted.
Turn adjustment screw
clockwise to decrease
CO2 value
When installing the water heater, it may be
necessary to adjust the throttle on the gas valve to
ensure a correct and efficient operation.
This can be done by inserting a 2 mm allen key
into the throttle adjustment screw on the gas valve.
Turning this screw right or left will change the CO2
value measured by the combustion analyzer. See
Figure 4.3 for the throttle adjustment locations.
Turn adjustment screw
counter clockwiase to
increase CO2 value
Figure 4.2 - Throttle adjustments
MANIFOLD PRESSURE
TEST PORT
VENTURI
DO NOT
ADJUST
GAS VALVE
TROTTLE
ADJUSTMENT SCREW
ADJUST CO2 % BY ROTATING THROTTLE ADJUSTMENT SCREW
WITH A 5/64 (2mm) ALLEN KEY OR FLAT HEAD SCREW DRIVER
LINE
PRESSURE
TEST PORT
Figure 4.3 - Throttle adjustment locations
NOTE:
The unit should be operating at maximum capacity for 5 minutes prior to adjusting the throttle.
48
Glow T180
Tankless Condensing Water Heater
Adjustment (NOTE: A properly calibrated combustion analyzer must be used.)
ΔΔ Flow maximum water through heater by opening laundry or bathtub faucet. Set heater to its maximum
capacity using following steps.
1. Enter the Service
Menu
Hold [MENU] button
for 5 sec.
2. Scroll through
Parameter List
Scroll through the
parameter list with
the [UP] / [DOWN]
buttons.
3. Select parameter
Select a parameter
210 value by
pressing [ENTER].
4. Alter value of
parameter
Alter a value of the
parameter with the
[UP] / [DOWN] buttons
to Hig.
5. Confirm / cancel
alteration
Confirm (save) with
[ENTER] or
Cancel with [RESET].
Table 4.1
ΔΔ If the CO2 value does not correspond to the specified range, (As indicated in the Specifications Table below),
turning the throttle screw clockwise will reduce the flow of gas as it enters the gas train thereby reducing the
CO2 value allowing for a leaner fuel mixture. Turning the screw counter clockwise will increase the flow of gas
resulting in a higher CO2 value.
GAS TYPE
Natural Gas
Liquid Propane
Gas Type
Natural Gas/Propane
GAS PRESSURE (INCHES W.C.)
Nominal
Min .
Max.
7
3.5
10.5
11
8
13
Frequency
Minimum (RPM)
1450
Nominal
9.2
10.5
CO2%
Min .
8.8
10.0
Max.
9.8
11.0
CO (ppm)
Max.
200
200
Maximun (RPM)
8200
Table 4.2
ΔΔ It may be necessary to set the throttle to the higher value within the range for longer vent lengths while setting
to the lower value range for short vent lengths.
ΔΔ Only the line test ports and the throttle adjustment screws are to be affected as required. All other screws
do not need to be touched since they are preset at the factory. Failure to do so may result in erratic and
unreliable burner operation, increased fuel consumption leading to reduced efficiency and general unsafe
operation. Failure to follow these instructions may result in serious injury
ΔΔ Recycle the main supply power to bring the heater to its normal condition.
ΔΔ CO readings should be under 200 ppm. Consult factory if readings exceed 200 ppm.
4.8 Set Point Temperature (When utilized for Space Heating)
The temperature setpoint cannot exceed 145°F when in ECO or Comfort Mode and/or connected to a space
heating source that utilizes an automatic DHW flush cycle. Cycle duration should not exceed 5 minutes every 24
hours. Failure to set properly may result in A16 Lock-out.
49
Glow T180
Tankless Condensing Water Heater
5. Maintenance (Authorized Personnel)
5.1 General Warnings
ΔΔ All maintenance operations must be carried out
by professionally qualified personnel, authorized
by Glow Brand.
ΔΔ The frequency of water heater maintenance is
recommended to be carried out once a year.
ΔΔ In order to guarantee the long life of the
appliance and in accordance with the current
gas safety regulations, only use original OEM
parts.
ΔΔ Before carrying out any type of maintenance
operation, disconnect the appliance from the
electrical supply and shut off the gas valve.
ΔΔ Warranty will not be offered if recommended
maintenance is not followed.
ΔΔ Remove and clean any deposits from the burner.
ΔΔ Check that the seal of the room-sealed chamber
is undamaged and positioned correctly.
ΔΔ Check the heat exchanger and clean if
necessary.
CAUTION! Before pressurizing
the system for service, ALWAYS make
sure the drain valves of both HOT and
COLD isolation valve assemblies are
placed in the CLOSED position, where
the drain valves’ stem slot is positioned
perpendicular to the drain valves’ body.
Remove the hose caps and visually
inspect the drain valve outlets to verify
that the balls are in the closed position.
You should see the chrome-plated face
of a closed ball. You should NOT be able
to see into the body of the drain valve.
Replace the hose caps and hand-tighten
only.
5.3 De-scaling and flushing
CAUTION! Before unthreading the hose
caps for any reason, make sure the drain valves
are CLOSED. Unthread slowly, to allow any builtup pressure to disperse. After removing the cap,
inspect the cap’s gasket for damage. Replace as
necessary.
5.2 Maintenance
ΔΔ Periodic examination of the entire venting
system is recommended.
ΔΔ Ensure all venting connections/joints are tight
and in good condition where visible.
ΔΔ Remove the burner along with the motor and
gas valve as one complete assembly.
ΔΔ When doing so, visually inspect the burner
and components for signs of ware or irregular
characteristics. This would include the ignition
and ionization.
ΔΔ Reassemble the complete burner assembly.
ΔΔ Visually inspect the burner flame. The flame
must burn with a clear blue, stable flame when
in operation.
ΔΔ All electric motors are permanently lubricated
and do not need oiling.
ΔΔ Verify proper operation after any servicing.
ΔΔ Wipe the outside surface with a wet cloth; then
dry the surface.
ΔΔ Vent termination should be inspected for
blockage during maintenance checks.
ΔΔ Check for blockage at the drain pipe and
condensate trap.
ΔΔ Check for water leaks from the equipment and
piping.
ΔΔ Warranty will not be offered if recommended
maintenance is not followed.
Glow T180
UP
MENU
ENTER
RESET
DOWN
ROTATE
CLOCKWISE
FOR SERVICE
WASHING
MACHINE
HOSES
DOMESTIC HOT
WATER OUT
OVERFLOW TUBE
PUMP
WHITE VINEGAR
5 GALLON BUCKET
Figure 5.1 - Flushing the water heater
50
DOMESTIC COLD
WATER IN
Glow T180
Tankless Condensing Water Heater
5.4 Water Heater Inspection
Isolation valve handles should be in
the FULL-OPEN position under normal
operating conditions. Both red and blue
handles should be parallel with the valve
body and piping or tubing.
In order to ensure that the water heater operates
efficiently and safely, it is recommended that the
appliance is inspected by an authorized technician at
least once a year.
The following operations should be carried out
annually:
ΔΔ Check the condition of the gas seals and replace
where necessary.
ΔΔ Check the condition of the water seals and
replace where necessary.
ΔΔ Visually inspect the condition of the combustion
chamber and flame.
ΔΔ When required, check that the CO2 is set to
the specified range as listed in the section 4.6
Adjusting the gas Throttle.
ΔΔ Check the condition and operation of the ignition
and gas safety systems. If necessary, remove
and clean the scaling from the ignition and flame
detection electrodes, paying particular attention
to place them at the correct distance from the
burner.
ΔΔ Check the heating safety systems: temperature
limit safety thermostat, pressure limit safety
device.
ΔΔ For safety reasons, periodically check the
integrity and operation of the exhaust system.
ΔΔ Check that the connection to the main electricity
supply complies with that reported in the water
heater’s instruction manual.
ΔΔ Check the electrical connections inside the
control panel.
ΔΔ Check the D.H.W flow rate and temperature.
ΔΔ Check that the condensate drain system is
working correctly, including any parts of the
system outside the water heater such as
condensate collection devices along the length
of the flue and/or any acid neutralizing devices.
ΔΔ Check that the condensate flows freely and that
there are no exhaust fumes present within the
appliance.
The following steps are required when
de-scaling and flushing the tankless water
heater. (fig. 5.1)
ΔΔ Both HOT outlet and COLD inlet isolation valves
must be closed whenever the HOT and COLD
drain valves are uncapped and opened.
ΔΔ Before removing the tethered caps of the drain
valves to attach hoses, ALWAYS verify that the
drain valves are completely closed. The tethered
caps are designed to keep debris from entering
the drain valves’ ends. They are not designed to
contain continuous pressure.
ΔΔ Flushing and de-scaling involves connecting a
pump that is submerged in a bucket of vinegar
to the water heater via hoses, and circulating
vinegar through the heat exchanger. Any
scaling inside the heat exchanger will exit and
collect inside bucket.
ΔΔ Prior to operating the pump, the main isolating
valves for the HOT and COLD water must be
closed.
ΔΔ Open the service valves and activate the pump
allowing white vinegar to circulate through the
heat exchanger for approximately 20 minutes.
ΔΔ Close the COLD water service valve and open
the COLD water isolation valve and allow fresh
water to circulate through the heat exchanger
while exiting from the HOT water service port
into the bucket.
ΔΔ Close the HOT water service valve and open the
HOT water isolation valve and restore to normal
operating conditions. When both isolation
valve handles are in the open position, water is
present at the drain valves. Therefore, both HOT
and COLD drain valves MUST remain closed
and capped during system operation!
ΔΔ It may be necessary to clean the Inlet Water
Screen once the flushing procedures have been
completed.
ΔΔ Annually inspect all connections for signs of
leakage. Correct as necessary.
Warranty will not be offered if recommended
maintenance is not followed.
51
Glow T180
Tankless Condensing Water Heater
5.5 Accessing The Water Heater
Display Control Board
All maintenance operations may require one or more
of the water heater casing panels to be removed.
The side panels can only be removed after the front
panel has been removed. (see fig. 5.2)
ΔΔ Remove the front panel.
ΔΔ Unscrew the four fixing screws and remove the
cover.
Draining the hot water system
If there is a danger of freezing, the hot water system
should be drained. This can be done as follows:
ΔΔ Close the main water supply valve.
ΔΔ Open all the hot and cold water taps.
ΔΔ On completion, close all the previously opened
taps.
Front panel:
ΔΔ Remove the 4 fixing screws at the top and
bottom of the front panel.
ΔΔ Grasp the lower part of the panel and pull it
outwards and then upwards.
5.6 Maintenance Operations
5.6.1 General Information
Before carrying out any cleaning or
part replacement operations, ALWAYS turn
off the ELECTRICITY, WATER and GAS
SUPPLY to the water heater.
Figure 5.2 - Water heater access panels
Left and right side panel:
BURNER
ASSEMBLY
ΔΔ Remove the fixing screws at the edge of the side
panel.
ΔΔ Grasp the bottom of the panel, move it sideways
and then upwards to remove it.
To access the electrical connections of the ignition
control board and the main control board, proceed
as follows:
HEAT
EXCHANGER
Ignition Control Board
ΔΔ Remove the front panel.
ΔΔ Remove the 2 fixing screws on the top front of
the right panel
ΔΔ Remove the 2 fixing screws on the top of the
shell.
ΔΔ The ignition board and bracket can now be
removed by pulling it towards the front.
IGNITION
ELECTRODE
IONIZATION
ELECTRODE
(FLAME SENSOR)
Figure 5.3 - Water heater burner assembly and heat exchanger
52
Glow T180
Tankless Condensing Water Heater
Glow Brand will not be held responsible
for damage to any of the water heater’s
components caused by non-compliance
with this instruction.
FLUE SENSOR
PORT
Maintenance operations may require removal of the
water heater casing.
1. Disconnect the electrical 120 VAC plug.
2. Un-plug the ignition electrode and flame
detection wires from the ignition control unit.
3. Disconnect the joint and remove the pipe linking
the gas valve to the injector unit (venturi).
4. Disconnect the joint and remove the gas feed
pipe from the gas valve.
5. Unscrew the ring-nut at the bottom of the roomsealed chamber and remove the gas valve.
6. Unscrew the nuts securing the burner unit
(consisting of a fan, manifold and burner) to the
heat exchanger.
7. Remove the burner assembly, paying particular
attention not to remove or damage the ceramic
fiber.
8. Check that the burner is not affected by
deposits, scaling or excessive oxidation. Check
that all the holes in the burner are free.
9. Clean the electrodes carefully without altering
their positions with respect to the burner.
10. Clean the burner cylinder using a non-metal
brush and without damaging the ceramic fiber.
11. Check the integrity of the gasket on the cover of
the burner.
12. Clean the heat exchanger using white vinegar or
a suitable cleaner for stainless steel. Distribute
the product on the spirals of the heat exchanger
using a brush. Do not wet the ceramic fiber
coating. Wait a few minutes then remove the
deposits using a non-metal brush. Then remove
the residues under running water.
13. Remove the gear clamp and condensate trap
and clean by running under water.
14. Unscrew the joint to the condensate trap,
remove the trap and wash under running water.
15. With the cleaning completed, re-assemble the
components following the above procedure in
reverse order.
16. Finally, check the water heater to make sure that
all gas and exhaust joints are tight.
MICROFUSE
(NOT REPLACABLE)
REFRACTORY
STAINLESS STEEL
HEAT EXCHANGER
Figure 5.4 - Stainless Steel Heat Exchanger
5.6.2 Part Replacement:
Ignition and/or flame ionization electrodes:
1. Disconnect the voltage.
2. Un-Plug the electrode wires.
3. Remove the screws securing the electrodes in
place.
4. Remove the electrodes and check that the gaskets
are not damaged and replace if necessary.
5. Reconnect the wires and re-assemble the
components following the above procedure in
reverse order.
6. Switch on the power supply and restart the
appliance.
If the water heater does not restart,
check the positions of the electrodes
(especially the ignition electrode). Make sure
that original position and distances between
the electrodes and the burner are respected to
avoid a water heater malfunction).
53
Glow T180
Tankless Condensing Water Heater
When inspecting the ignition electrode, a
4.5mm gap should be present between the
grounding rod and the ignition electrode.
8 1mm
ΔΔ Check for continuity between the two leads. If
there is no continuity replace the switch.
ΔΔ Unscrew the fixing screws and remove the high
limit switch.
ΔΔ Replace the high limit switch and re-assemble
the components following the above procedure
in reverse order.
ΔΔ Switch on the electricity, water and gas supplies
and restart the appliance.
8 1mm
5.6.4 Water Sensors (see Figure 5.7)
ΔΔ Make certain the sensor is properly secured in
place and making good contact with the water
pipe.
ΔΔ Un-Plug the connecting wire.
ΔΔ Disconnect the wire leads of the domestic
sensor. Set the multimeter to read Ohm’s and
apply the multimeter terminals to the sensor
leads. You should have a value of “Nominal
resistance at 25°C / 77°F – 10,000 Ohm”. If the
sensor does not provide the right data, as per
the table, the sensor is out of calibration and
needs to be replaced. (see section 7.10)
ΔΔ Replace the sensor and re-assemble the
components following the above procedure in
reverse order.
ΔΔ Switch on the electricity, water and gas supplies,
open the shut-off valves and fill the central
heating circuit. Then restart the appliance.
BURNER
IGNITION
ELECTRODE
IONIZATION
ELECTRODE
Figure 5.5 - Electrodes distance from the burner
HI-LIMIT
SWITCH
4.5 MM
(0.180”)
INLET TEMPERATURE
SENSOR
Figure 5.6 - Water heater electrode gap
HEAT EXCHANGER
OUTLET SENSOR
5.6.3 High Limit Switch (Figure 5.7)
DHW SENSOR
This high limit switch opens when the
temperature in the loop exceeds 95°C. A
manual reset of the unit is required.
ΔΔ Disconnect the voltage.
ΔΔ Un-plug the electrode wires.
Figure 5.7 - Water heater sensors
54
Glow T180
Tankless Condensing Water Heater
5.7 Gas Supply Connections
WARNING: Do not attempt to convert
this water heater for use with a different
type of gas other than the type shown on the
rating plate. Doing so could result in death,
personal injury, explosion or fire, product
damage and or poor operating conditions or
performance.
ΔΔ All gas piping shall be in accordance with local
utility company requirements and /or in the
absence of local codes, use the latest edition of
National Fuel Gas Code (NFGC), ANSI Z223.1.
In Canada, use the latest edition of CSA B149.1,
National Gas and Propane installation code.
ΔΔ Apply a thin coat of pipe compound to all the
threaded male ends. Compound must be of the
type resistant to the action of LP Gas.
ΔΔ To ensure proper water heater operation, the
gas pipe and gas meter must be sized correctly.
ΔΔ If flexible connectors are used, the minimum
inside diameter must be 3/4” or greater and the
rated capacity if the connector must be equal to
or greater than the BTU capacity of the water
heater.
ΔΔ Do not use excessive force when tightening the
pipe sections. Excessive force can damage
the water heater, especially when Teflon pipe
compound is used.
ΔΔ Switch on the electricity, water and gas supplies
and check for any gas leaks using a soapy
solution or leak detector spray.
WASHER
BETWEEN HEAT
EXCHANGER
AND FAN
VENTURI
BLOWER
BLOWER VENTURI
O-RING
GAS VALVE
RUBBER
COUPLING
GAS VALVE
GAS VALVE
FITTING
Figure 5.8 - Electric fan
Electric fan (see fig. 5.8)
ΔΔ Remove and dismantle the entire burner
assemble (see Section 5.5.1- ‘General
Information’)
ΔΔ Use a 3 mm hex bit to remove the 4 bolts from
the 1/2” NPT gas flange. Careful not to damage
the o-ring between the flange and the gas valve.
ΔΔ Use an 8 mm wrench to unscrew the four nuts
securing the electric fan to the gas manifold and
then remove the electric fan, noting the position
of the washer.
ΔΔ Unscrew the 4 torx screws from the venture
and remove the electric fan, paying particular
attention not to damage the blower venture
o-ring.
ΔΔ Replace the electric fan and re-assemble the
components following the above procedure in
reverse order.
ΔΔ Switch on the electricity, water and gas supplies
and check the integrity of the joint by measuring
the CO2 levels.
Gas valve (see fig. 5.8)
ΔΔ Use a 3 mm hex bit to remove the 4 bolts from
the 1/2” NPT gas flange, on the underside of the
unit. Careful not to damage the o-ring between
the flange and the gas valve.
ΔΔ Remove the 2 torx screws (T25) that secure the
gas valve to the venturi.
ΔΔ Pull down on the gas valve to separate it from
the venture. Careful not to damage or lose the
rubber coupling
ΔΔ Replace the gas valve and re-assemble the
components following the above procedure in
reverse order.
ΔΔ Check for gas leaks.
55
Glow T180
Tankless Condensing Water Heater
6. Lock Out And Warnings
DO NOT PRESS RESET WHEN THE FOLLOWING CODES APPEAR.
FOLLOW THE INSTRUCTIONS AS FOUND IN THE RESOLUTION COLUMN
Lockout
Codes
Description
A00
Internal software error
A01
Three unsuccessful attempts at ignition
ignition attempts in a row
A02
A03
A04
A05
A06
A07
A08
A11
A12
A15
A16
A17
A18
A19
A20
A21
A22
Resolution
* Recycle power & press RESET
* If lockout code still exists, replace ICB (Ignition Control Board)
and display board
* Follow instruction given in flowchart: A01 Ignition lockout
* Verify electrical connections between gas valve and ICB
* Recycle power and press RESET
* If lockout code still exists, replace ICB and display board
* Verify electrical connections between safety switches (Hi-limit,
blocked flue switch), and all sensors and ICB
Failure detected in safety circuit within ICB
* Recycle power and press RESET
* If lockout code still exists, replace ICB and display board
ICB has a BLOCKING ERROR for more than * Press RESET, the BLOCKING ERROR will appear.
20 hours.
* See BLOCKING ERROR on next page.
Fan speed deviates for more than 60 seconds * Verify electrical connections between fan and ICB
Fan runs too slow for more than 60 seconds
* Recycle power and press RESET
* If lockout code still exists, replace ICB and display board
Fan runs too fast for more than 60 seconds
Internal software error
* Recycle power and press RESET
Internal software error
* If lockout code still exists, replace ICB and display board
Internal software error
* Follow instruction given in flowchart: A15 Hi-limit switch open
Hi-Limit switch or micro fuse is open
or microfuse open
Flue temperature exceeded the maximum flue * Follow instruction given in flowchart: A16 Flue gas
temperature (65°C/150°F)
temperature exceeds limit (65°C/150°F)
Internal software error
* Recycle power and press RESET
Internal software error
* If lockout code still exists, replace ICB and display board
Internal software error
* Power OFF the unit and clean ionization electrode
* Recycle power and press RESET
Flame still present 10 seconds once gas valve
* Allow the burner to operate at high fire for 1 minute if A20 still
is de-energized
appears replace the ICB
* Recycle power and press RESET
* Power OFF the unit and clean ionization electrode
* Recycle power and press RESET
Flame is detected prior to ignition
* Allow the burner to operate at high fire for 1 minute if A20 still
appears replace the ICB
* Recycle power and press RESET
* Check intake & exhaust vent for obstructions and clear if any
* Check gas pressure at line pressure test port of gas valve. If
pressure fluctuates out of specified range, contact gas supplier.
* Check main power supply voltage, if voltage fluctuates out of
specified range, contact qualified electrician
Flame is lost 3 times during one demand
* Power off the unit, clean ionizaton electode and secure its
connection to the ICB
* Check for blockage in condensate trap and heat exchanger. If
blockage exists, clean trap and or heat exchanger
* Recycle power and press RESET
Failure detected in gas valve circuit
56
Continued on next page
Glow T180
Lockout
Codes
Tankless Condensing Water Heater
Description
A24
Blocked flue switch is open
A29
Internal software error
A30
Internal software error
Resolution
Press RESET to restore unit to normal operating mode
Blocking
Description
Errors
E100
E101
E102
E103
E104
E106
Internal software error
E107
E108
E109
E110
E111
E112
E113
E114
Flame is detected and not present
E119
DCW inlet sensor failure
E120
Heat exchanger outlet sensor failure
E122
E123
DHW outlet sensor failure
Flue sensor failure
E126
DCW sensor shorted
E127
Heat exchanger outlet sensor shorted
E129
DHW sensor shorted
E130
Flue sensor shorted
E134
Too many RESETs in a short time period
E135
Incorrect polarity
* Follow instruction given in flowchart: A24 Block flue switch
open
* Recycle power and press RESET
* If lockout code still exists, replace ICB and display board
* Recycle power and press RESET
* If lockout code still exists, replace ICB and display board
Resolution
* Recycle power and press RESET
* If BLOCKING ERROR still exists, replace ICB and display
board
* Power OFF the unit and clean ionization electrode
* Recycle power and press RESET
* Allow the burner to operate at high fire for 1 minute if E114 still
appears replace the ICB
* Recycle power and press RESET
* Follow instruction in flowchart: E119 DCW inlet sensor failure
* Follow instruction in flowchart: E120 heat exchange outlet
sensor failure
* Follow instruction in flowchart: E122 DHW outlet sensor failure
* Follow instruction in flowchart: E123 flue sensor failure
* Recycle the power
* If E126 BLOCKING ERROR still exists, replace DCW inlet
sensor
* Recycle the power
* If E127 BLOCKING ERRORstill exists, replace heat exchanger
outlet sensor
* Recycle the power
* If E129 BLOCKING ERROR still exists, replace DHW outlet
sensor
* Recycle the power
* If E130 BLOCKING ERROR still exists, replace flue sensor
* Power OFF unit, wait 5 minutes, Power ON unit
* If E134 BLOCKING ERROR still exists, replace ICB and display
board
* Power OFF the unit
* Check and reverse the polarity at the receptacle
57
Glow T180
Tankless Condensing Water Heater
7. Troubleshooting
7.1 Ignition Lock-Out
A01
IGNITION LOCK-OUT
1.
2.
3.
4.
5.
OPEN THE UNIT TAKING OFF THE HEATER DOOR
RECYCLE THE POWER
PRESS “RESET BUTTON”, WAIT FOR 30 SECONDS
CREATE DOMESTIC HOT WATER DEMAND
OBSERVE THE FLAME THROUGH GLASS WINDOW OF HEAT EXCHANGER
ENSURE GAS SUPPLY VALVE IS
OPEN, CONFIRM GAS PRESSURE
AT VALVE INLET
IS THERE
GAS PRESSURE?
IS
THERE
A FLAME?
NO
CHECK IONIZATION CURRENT
YES
IS
IONIZATION
CURRENT ABOVE
2.0 mA?
CHECK
THE
MAIN
SUPPLY
NO
NO
YES
CHECK IONIZATION
ELECTRODE
CHECK THE IGNITION
TRANSFORMER FOR OPERATION
REPLACE
PART
IS THE
IGNITION
TRANSFORMER
FUNCTIONING
PROPERLY?
NO
YES
IS
IONIZATION
ELECTRODE
BROKEN?
NO
REPLACE
TRANSFORMER
CHECK IONIZATION
CABLE
YES
CHECK IGNITION
CABLE
REPLACE
PART
YES
IS
IONIZATION CABLE
BROKEN?
NO
IS THE IGNITION
CABLE BROKEN OR
DAMAGED?
NO
CHECK THE DISTANCE
BETWEEN THE IONIZATION
ELECTRODE AND BURNER
CHECK IGNITION
ELECTRODE SPARKING GAP
YES
IS THE IGNITION
ELECTRODE
FUNCTIONING?
REPLACE IGNITION
CABLE
NO
YES
NO
IS THE DISTANCE
8 mm / 0.325”?
NO
CHECK THE GAS VALVE
FUNCTIONING
REPLACE GAS
VALVE
REPLACE
IGNITION
ELECTRODE
SET THE CORECT DISTANCE
BETWEEN THE ELECTRODE AND
BURNER
IS THE GAS
VALVE FUNCTIONING
CORRECTLY?
58
Glow T180
Tankless Condensing Water Heater
7.2 High Limit Or Microfuse Open
A15
HIGH LIMIT OR MICRO FUSE OPEN
CHECK THE HIGH LIMIT SWITCH
(95°C)
REPLACE
HIGH LIMIT
SWITCH
NO
IS THERE
CONTINUITY?
YES
CHECK THE MICRO FUSE
IS THERE
CONTINUITY?
NO
REPLACE HEAT
EXCHANGER
YES
CHECK HEAT EXCHANGER
REPLACE HEAT
EXCHANGER
NO
IS THE HEAT
EXCHANGER
FUNCTIONING
CORRECTLY?
YES
CHECK AND CLEAN HEAT EXCHANGER
59
Glow T180
Tankless Condensing Water Heater
7.3 Flue Gas Temperature Exceeds The Limit
A16
FLUE GAS TEMPERATURE EXCEEDS
THE LIMIT (65degC/150degF)
CHECK THE EXHAUST VENT
IS IT CLEAR FROM
OBSTRUCTIONS?
YES
IF UTILIZED FOR SPACE
HEAT AND/OR IN ECO OR
COMFORT MODE CHECK TO
ENSURE SET POINT IS
63degC/145degF OR BELOW
NO
CLEAR ALL OBSTACLES
INSIDE VENT AND FROM
VENT TERMINAL
NO
REDUCE TEMPERATURE SET POINT
RESET HEATER
VERIFY TEMPERATURE
DHW Set point cannot be set higher than
145°F/63°C for space heating applications.
60
YES
RESET HEATER
VERIFY TEMPERATURE
Glow T180
Tankless Condensing Water Heater
7.4 Block Flue Switch Open
A24
BLOCK FLUE SWITCH OPEN
CHECK THE EXHAUST VENT
CLEAR ALL OBSTACLES INSIDE
VENT AND FROM VENT TERMINAL
NO
IS VENT CLEAR
FROM OBSTRUCTION?
YES
RESET HEATER
RESET HEATER
NO
IS FLAME
ON?
NO
IS
MOISTURE/
CONDENSATE
INSIDE SILICON
TUBES
CHECK MOISTURE/CONDENSATE
INSIDE SILICON TUBES
YES
CHECK THE BLOCK
FLUE SWITCH WITH
MULTIMETER
IS
THEIR
CONTINUITY?
NO
CLEAR ALL
SILICON TUBES
IS FLAME
ON?
CHECK THE BLOCK FLUE
SWITCH CABLE FOR
CONTINUITY/BREAKAGE
NO
IS
THEIR
CONTINUITY?
NO
REPLACE PART
REPLACE CABLE
* Resistance Value vs. Temperature Section 7.10
61
YES
RESET HEATER
Glow T180
Tankless Condensing Water Heater
7.5 DCW Inlet Sensor Failure
E119
DCW INLET SENSOR FAILURE
CHECK THE DCW INLET SENSOR
VALUE WITH MULTIMETER
REPLACE PART
IS THE VALUE
CORRECT?
(i.e. RESISTANCE VALUE*)
10KΩ @25°C
NO
YES
CHECK THE DCW INLET SENSOR
CABLE FOR CONTINUITY OR A
BREAKAGE
REPLACE PART
NO
IS THERE
CONTINUITY?
62
Glow T180
Tankless Condensing Water Heater
7.6 Heat Exchanger Outlet Sensor Open
E120
HEAT EXCHANGER OUTLET SENSOR
OPEN
CHECK THE HEAT EXCHANGER
OUTLET SENSOR VALUE WITH
MULTIMETER
REPLACE PART
IS THE VALUE
CORRECT?
(i.e. RESISTANCE VALUE*)
10KΩ @25°C
NO
YES
CHECK THE HEAT EXCHANGER
OUTLET SENSOR CABLE FOR
CONTINUITY OR A BREAKAGE
REPLACE PART
NO
IS THERE
CONTINUITY?
63
Glow T180
Tankless Condensing Water Heater
7.7 DHW Sensor Open
E122
DHW SENSOR OPEN
CHECK THE DHW SENSOR VALUE
WITH MULTIMETER
REPLACE PART
IS THE VALVE
CORRECT?
(i.e. RESISTANCE VALUE*)
10KΩ @25°C
NO
YES
CHECK THE DHW SENSOR CABLE
FOR CONTINUITY OR A BREAKAGE
REPLACE PART
NO
IS THERE
CONTINUITY?
64
Glow T180
Tankless Condensing Water Heater
7.8 Flue Sensor Open
E123
FLUE SENSOR OPEN
CHECK THE FLUE SENSOR VALUE
WITH MULTIMETER
REPLACE PART
IS THE VALUE
CORRECT?
(i.e. RESISTANCE VALUE*)
10KΩ @25°C
NO
YES
CHECK THE FLUE SENSOR CABLE
FOR CONTINUITY OR A BREAKAGE
REPLACE PART
NO
IS THERE
CONTINUITY?
65
Glow T180
Tankless Condensing Water Heater
7.9 No Hot Water
NO HOT WATER
CHECK THE DISPLAY
CHECK FLOW SYMBOL
ON DISPLAY
IS
THE FLOW
SYMBOL ON THE
DISPLAY?
YES
IS
DISPLAY
ON?
REPLACE FUSE
NO
YES
NO
CHECK THE FUSE OF
MAIN CONTROL BOARD
IS
FUSE
DAMAGED
BROKEN?
NO
INCREASE FLOW MORE
THAN 0.6 GPM
CHECK THE WIRING HARNESS
BETWEEN MAIN CONTROL
CONNECTION BOARD AND DISPLAY
IS
THE FLOW
SYMBOL ON THE
DISPLAY?
REPLACE
HARNESS
NO
YES
IS WIRING
HARNESS DAMGED OR
BROKEN?
CLEAN THE FLOW
SENSOR
YES
IS
THE FLOW
SYMBOL ON THE
DISPLAY?
NO
REPLACE
FLOW SENSOR
IS
DISPLAY
ON?
NO
CHECK THE
MAIN CONTROL BOARD
NO
REPLACE DISPLAY
BOARD
NO
IS MAIN
CONTROL BOARD
DAMGED OR
BROKEN?
YES
REPLACE MAIN BOARD
66
Glow T180
Tankless Condensing Water Heater
7.10 Resistance Value Versus Temperature
R(Ω)
0/32
32624
5/41
25381
10/50
19897
15/59
15711
20/68
12493
25/77 10000
30/86
8056
35/95
6530
40/104
5324
45/113
4365
50/122
3599
55/131
2982
60/140
2483
65/149
2079
70/158
1748
75/167
1476
80/176
1252
85/185
1066
90/194
912
95/203
782
100/212
674
14
12
10
8
R(kΩ)
°C/°F
6
4
2
0
0
20
30
40
50
60
TEMPERATURE (°C)
Table 8.1
67
70
80
90
100
Glow T180
Tankless Condensing Water Heater
8. Parts List - Available From Glow Brand
8.1 Cabinet And Interior
79
2
5
3
6
8
7
1
4
1
1
13
12
10
65
13
11
64
14
15
16
17
18
18
20
63
22 23
1
24
19
62
60
61
21
1
26
48
48
58
47
47
29
31
44
44
52
33
43
53
30
55
42
68
34
35
36
37
90
89
54
Figure 8.1 Cabinet and interior parts
32
45
50
83
1
44
51
56
84
29
81
46
50
57
1
47
49
49
25
28 27
59
1
80
41
38
40
39
Glow T180
Tankless Condensing Water Heater
82
11
1
2
67
67
10
68
67
52
66
1
Figure 8.3 Block Flue Switch Loop
Figure 8.2 Door Mounting
69
78
75
76
70
71
77
77
73
74
72
Figure 8.4 Heat Exchange Parts
69
Glow T180
Tankless Condensing Water Heater
8.2 Water Connections
86
88
87
85
85
DHW
DCW
OUTLET
INTLET
DHW
DCW
OUTLET
INTLET
Figure 8.6 - Water Heater with Optional Service Kit
Figure 8.5 - Water Heater Connections
Item#
Part#
Description
85
19000005-A
TUBE FOR SAFETY RELIEF VALVE (DRIP TUBE) (NOT SUPPLIED WITH
UNIT)
86
GLO-180-43
PRESSURE RELIEF VALVE
87
GLO-180-23
3/4” BRASS TEE
88
GLO-180-44
TANKLESS WATER HEATER SERVICE VALVE KIT (NOT SUPPLIED WITH
UNIT)
Table 8.2
70
Glow T180
Tankless Condensing Water Heater
Parts List For Figures 8.1, 8.2, 8.3, 8.4, 8.5 & 8.6
Item#
Part#
Description
1
GLO-180-103
8-32 X 1/2 STEEL PAN PHILLIP T/SCREWS TYPE F
2
GLO-02
EXHAUST FLUE ADAPTER (LONG)
3
GLO-01
COMBUSTION AIR INLET ADAPTER (SHORT)
4
GLO-02-PLUG
PVC VENT PLUG
5
GLO-180-S-01
TOP, BACK & BOTTOM UNI-SHELL
6
GLO-180-S-08
REAR SUPPORT MOUNTING BRACKET
7
GLO-180-S-15
PAINTED - TANKLESS RIGHT PANEL
8
GLO-180-S-16
PAINTED - TANKLESS LEFT PANEL
9
GLO-180-S-09
DOOR, SUPPORT BRACKET
10
GLO-51
HOSE BARB (3/16” NYLON) (1/180 unit)
11
GLO-180-150
BLOCKED FLUE SWITCH (3.28 Mbar)
12
GLO-180-21
BLOCKED FLUE SWITCH MOUNTING BRACKET
13
GLO-59
HEAT EXCHANGER SUPPORT BRACKETS
14
GLO-180-104
10-24 X 1/2 HWH THREAD CUTTING (SCREWS)
15
GLO-180-107
10 - 32 X 1/2” Pan Sq/SI Ms Zp, SCREWS
16
GLO-180-108
10 - 32 K-LOCK NUT
17
GLO-552
IGNITION CONTROL BOARD (ICB)
18
GLO-180-50
3/4” NPT BRASS WATER INLET/OUTLET FITTINGS
19
GLO-180-250
WATER INLET SCREEN (WHITE)
20
GLO-53
7/8” DIAMETER PVC GROMMET
21
GRO-001
CONDENSATE HOSE GROMMET
22
GLO-551
DISPLAY BOARD
23
GLO-180-S-03
DISPLAY BOARD MOUNTING BRACKET
24
GLO-180-51
DISPLAY BOARD REAR ENCLOSURE
25
GLO-180-S-10
METAL ENCLOSURE SUPPORT
26
GLO-180-101
6 X 3/8” SCREWS
27
GLO-180-52
DISPLAY BOARD COVER PLATE
28
GLO-180-S-18
ENCLOSURE LOCKING TABS
29
GLO-180-105
10-32 X 1/2” SCREWS
30
GLO-563
GAS VALVE ADAPTER SCREWS M4 X 12 SOCKETCAP
31
FM-180-HRN-006
POWER SUPPLY CABLE
32
GLO-180-106
M5 X 12 DIN933 -8.8 HEX SCREW
33
GLO-50
FAN/BURNER GASKET
34
GLO-543
FAN
35
GLO-544
FAN / VENTURI O-RING
71
Glow T180
Tankless Condensing Water Heater
Parts List For Figures 8.1, 8.2, 8.3,8.4, 8.5 & 8.6 (continued)
Item#
Part#
Description
36
GLO-545
VENTURI (NG)
36
GLO-546
VENTURI (LP)
37
GLO-547
GAS VALVE RUBBER COUPLING
38
GLO-180-S-11
DISPLAY ENCLOSURE SUPPORT BRACKET
39
GLO-180-109
VENTURI MOUNTING HEX SCREW
40
GLO-180-110
GAS VALVE MOUNTING SCREW
41
GLO-541
GAS VALVE (NG)
41
GLO-542
GAS VALVE (LPG)
42
GLO-180-40
1/2” X 3/4” BRASS REDUCER, GAS
43
FLM-005
3/4” INLET WATER STUB - WITH UNIONS
44
GLO-40
3/4” RUBBER WASHER
45
GLO-52
DCW FLOW SENSOR
46
FLM-004
INLET WATER PIPE - WITH 3/4” BRASS UNION
47
GLO-41
WATER TEMPERATURE SENSOR
48
GLO-46
O-RING (180)
49
GLO-180-45
SS CLIP FOR COPPER PIPE
50
GLO-180-41
GEAR CLAMP
51
GLO-180-111
HEAT EXCHANGER CONDENSATE TUBE
52
GLO-48
CONDENSING TRAP
53
GLO-180-112
SEAL, CONDENSATE TRAP
54
GLO-180-113
PLASTIC UNION NUT, CONDENSATE TRAP
55
GLO-47
CONDENSATE DRAIN
56
FLM-003
OUTLET WATER TUBE - WITH 3/4” BRASS UNION
57
EKA-323-39
DHW HIGH TEMPERATURE LIMIT SWITCH (95°C)
58
GLO-180-100
HIGH LIMIT SWITCH SCREW
59
GLO-180-S-12
IGNITION TRANSFORMER MOUNTING BRACKET
60
GLO-49
IGNITION TRANSFORMER
61
GLO-43
IGNITION ELECTRODE CABLE (180)
62
GLO-44
LEAD, IONIZATION ELECTRODE CABLE (180)
63
GLO-60
HEAT EXCHANGER SUPPORT CLAMP
64
GLO-58
HEAT EXCHANGER ASSEMBLY ((INCLUDES BURNER/ELECTRODE)
65
GLO-42
HEAT EXCHANGER FLUE TEMPERATURE SENSOR
66
GLO-180-S-17
PAINTED - TANKLESS DOOR
67
GLO-180-22
SILCONE CONDENSATE HOSE 36”
68
GLO-65
BLACK POLYPRO BARBED TEE, 3/16”
72
Glow T180
Tankless Condensing Water Heater
Parts List For Figures 8.1, 8.2, 8.3, 8.4, 8.5 & 8.6 (continued)
Item#
Part#
Description
69
GLO-62
FLUE OUTLET ADAPTER (60mm)
70
GLO-581
STAINLESS STEEL HEAT EXCHANGER
71
GLO-585
GASKET BURNER PLATE
72
GLO-584
BURNER AND PLATE
73
GLO-582
IGNITION ELECTRODE
74
GLO-586
GASKET, IGNITION ELECTRODE
75
GLO-583
IONIZATION ELECTRODE
76
GLO-587
GASKET, IONIZATION ELECTRODE
77
GLO-588
ELECTRODE MOUNTING SCREW
78
GLO-589
BURNER MOUNTING NUTS
79
GLO-180-114
VENT ADAPTER SCREWS
80
GLO-180-S-02
ICB MOUNTING BRACKET
81
GLO-180-42
STRAIN RELIEF
82
GLO-180-S-13
WALL MOUNT SUPPORT BRACKET
83
SCREEN
GALVANIZED BIRD SCREEN
84
GLO-180-77
1/2”-3/4” PLASTIC CONDENSATE TUBE FITTING
85
19000005-A
TUBE FOR SAFETY RELIEF VALVE (DRIP TUBE) (NOT SUPPLIED WITH UNIT)
86
GLO-180-43
PRESSURE RELIEF VALVE
87
GLO-180-23
3/4” BRASS TEE
88
GLO-180-44
TANKLESS WATER HEATER SERVICE VALVE KIT (NOT SUPPLIED WITH UNIT)
89
GLO-562
½” NPT GAS VALVE BRASS ADAPTER
90
GLO-561
O-RING, GAS VALVE
91
GLO-563
GAS VALVE ADAPTER SCREW
73
Glow T180
Tankless Condensing Water Heater
Optional Accessories
Part#
Description
140-103
RECIRCULATION PUMP UPS15-55SUC/TLC W/ TIMER
140-003
RECIRCULATION PUMP UPS15-58
96806141
1/2” SWEAT CONNECT KIT W/ CHECK VALVE (for use with 140-003)
96806143
3/4” SWEAT CONNECT KIT W/ CHECK VALVE for use with 140-003)
GLO-180-80
HIGH TEMPERATURE AQUASTAT (105°F / 10°F Diff)
GLO-103-01
BYPASS VALVE
GLO-103-02
1/2” x 1/2” FLEX BRAID HOSE KIT (2PCS)
GLO-103-03
3/8” x 1/2” FLEX BRADE HOSE KIT (2PCS)
529913
1/2” SWEAT CONNECT KIT W/ CHECK VALVE (for use with 140-103)
529911
3/4” SWEAT CONNECT KIT W/ CHECK VALVE (for use with 140-103)
Recirculating Pump and Accessories
Figure 8.7 Recirculating Pumps and Fittings
74
Glow T180
Tankless Condensing Water Heater
8.3 Electrical Connections
ICB
Figure 8.8 Wiring Diagram
75
Glow T180
Tankless Condensing Water Heater
Parts List For Electrical Connections - Figure 8.8
Connector
Harness #
Description
J1
FM-180-HRN-006
POWER SUPPLY CABLE WITH PLUG (120V,60HZ)
J3
FM-180-HRN-002
SAFETY, FLUE AND WATER TEMPERATURE WIRING HARNESS
J4
FM-180-HRN-005
IGNITION TRANSFORMER AND IONIZATION ELECTRODE
HARNESS
J5,J12
FM-180-HRN-001
FAN, GAS VALVE WIRING HARNESS
J6
FM-180-HRN-004
FLOW SENSOR AND BLOCKED FLUE SWITCH HARNESS
J9
FM-180-HRN-007
DISPLAY BOARD WIRING HARNESS
GROUNDWIRE FM-180-HRN-003
IGNITION ELECTRODE GROUND WIRE
Part #
Description
EKA-323-29
DHW HIGH TEMP LIMIT SWITCH
GLO-42
HEAT EXCHANGER FLUE TEMP SENSOR
GLO-41
DCW TEMP SENSOR
GLO-41
HEAT EXCHANGER OUTLET WATER TEMP SENSOR
GLO-41
DHW TEMP SENSOR
GLO-180-150
BLOCKED FLUE SWITCH (N/C)
GLO-52
DCW FLOW SENSOR
GLO-551
DISPLAY BOARD
GLO-552
IGNITION CONTROL BOARD (ICB)
GLO-553
ICB FUSE 3.15 AMP, 250V
GLO-541
NG, GAS VALVE
GLO-542
LPG, GAS VALVE
GLO-581
STAINLESS STEEL HEAT EXCHANGER WITH MICROFUSE (NOT REPLACABLE)
GLO-543
FAN
GLO-44
LEAD, IONIZATION ELECTRODE CABLE
GLO-583
IONIZATION ELECTRODE
GLO-43
LEAD, IGNITION ELECTRODE CABLE
GLO-582
IGNITION ELECTRODE
GLO-49
IGNITION TRANSFORMER
GLO-301
IGNITION TRANSFORMER MOUNTING BRACKET
Acronym
T_DCW
DOMESTIC COLD WATER TEMP
T_HEX_OUT
HEAT EXCHNAGER OUTLET WATER TEMP
T_DHW_OUT
DOMESTIC HOT WATER TEMP
76
Warranty
Glow Brand warrants this product against failure due to defect in materials or workmanship under normal use
and maintenance for a period of 60 months (5 years) or 65 months if the date of installation cannot be
determined, and commences on the date of installation or commissioning of the appliance. Should any part
fail during the applicable warranty period, Glow Brand will provide a new or remanufactured part to replace
the defective part. Proof of purchase and installation date will be required in order to facilitate the warranty
requirements. All parts claimed under warranty are to be returned to Glow Brand for testing and verification.
The customer’s account will be credited only after the defective part has been examined by Glow Brand or the
vendor and determined to be defective. The cost of returning the goods to Glow Brand is by others. All
warranty parts are to be prepaid by the customer. Warranty will not be offered until the equipment is paid for in
full. Warranty on all equipment sold to customers may be suspended, at Glow Brand’s discretion, until the
customer’s account is in good standing. Warranty covers defective components only. Normal wear and abuse
is not covered. This warranty does not cover costs incurred for diagnosing, repairing, removing, installing,
shipping, servicing, or handling of either failed parts, or replacement parts, or new units.
SECOND THROUGH THE TENTH YEAR
Limited Warranty for the Stainless Steel Tube Heat Exchanger
Glow Brand warrants it’s stainless steel heat exchanger against failure due to defect in materials or
workmanship under normal use and maintenance from the date of installation for the second through the tenth
year to the original purchaser only. If during such time period, any part of the stainless steel tube heat exchanger
is found to be defective, Glow Brand will provide replacement for the original heat exchanger.
FIRST YEAR (Labor)
Labor Warranty for Glow Brand Tankless Condensing Water Heater
Glow Brand will provide a predetermined fixed labor amount for the replacement of defective parts for 1 year
(12 months) and commences on the initial date of installation or commissioning of the appliance.
Residential
Commercial
Application
Standard or Controlled
Recirculation
Uncontrolled Recirculation
Standard or Controlled
Recirculation
Uncontrolled Recirculation
Heat Exchanger
10 years
Parts
5 years
Labor
1 year
5 years
5 years
3 years
3 years
1 year
1 year
5 years
3 years
1 year
Standard - The Glow Brand unit is used as intended without the addition of a recirculation system.
Controlled Recirculation - The Glow Brand unit is used in conjunction with a recirculation pump as stated in the
manual utilizing an aquastat or timer operating in non-continuous mode.
Uncontrolled Recirculation - The Glow Brand unit is used in conjunction with a recirculation pump as stated in the
manual operating in continuous mode.
Product Improvements – As Glow Brand Technologies maintains a continuous improvement policy, specifications
are subject to change without notice.
. . . continued
Limitations on Liability
This Warranty Does Not Cover
1.
Installations by other than licensed plumber, gas installer or heating contractor.
2.
Commissioning other than by a Glow Brand certified contractor.
3.
Installations of equipment for other purposes than those intended by the instructions supplied with this
equipment.
Installations of equipment for purposes other than domestic hot water production and central heating needs if
installed.
Any product which is improperly installed or moved from its original place of installation.
Any product which has been repaired or replaced with other than Glow Brand factory parts.
Any product modified in any way, misused or damaged or which has been used contrary to the warrantor’s
written instructions.
Introduction of liquids other than potable water into this product.
Any damage to the product caused by failure to maintain the unit properly, improper voltage, improper gas
pressure, improper water pressure, flood, freezing, electrical surges, fire, lightning, or Acts of God.
Nicks, scratches or discoloration of decorative finishes.
Installation, plumbing, gas piping and wiring not integral to the product.
Any Glow Brand product installed in an improper environment (e.g. Corrosive, dusty, and or chemically
contaminated).
Condensate damage due to improperly installed or lack of a condensate trap (drain).
Damages due to accidents, abuse, misuse, improper installations, misapplication or incorrect sizing and lack
of regular recommended maintenance.
The water heater is installed outdoors.
Failures resulting in the Glow Brand unit not being properly maintained as per the recommended
maintenance.
Failures not reported to Glow Brand within the time period specified above.
Products damaged in shipment or storage or otherwise without fault of Glow Brand.
The water heater has not been installed in accordance with all applicable local plumbing and/or building code
and/or regulations or in their absence with the latest edition of the natural gas and propane installation code
and/or the National Electrical Code or Canadian Electrical code.
This warranty does not cover any expenses related to the removal or re-installation process. The homeowner
will be responsible for the cost of removing and re-installing the alleged defective part or its replacement and
all labor and material connected therewith, and transportation to and from Glow Brand.
The warranty cannot be considered as a guarantee of workmanship of an installer connected with the
installation of the condensing water heater or as imposing a liability of any nature for unsatisfactory
performance as a result of faulty workmanship in the installation, which liability is expressly disclaimed.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
Exclusion of Incidental and Consequential Damages/ Disclaimers
Glow Brand Technologies Inc. will not pay in contract or in tort, consequential or incidental damages under this
warranty, both of which are specifically excluded. This means we shall not be responsible for any loss,
expense or damage caused by any defect in the water heater, other than the water heater itself. The maximum
liability of Glow Brand in connection with this limited warranty shall not in any case exceed price of the part
claimed to be defective, or price of the water heater if the entire water heater is claimed to be defective.
“Incidental” damages include expenses of inspection, obtaining substitute goods, transportation, etc.
“Consequential” damages include injury to persons or property inconvenience or other consequential damage
resulting from a breach of warranty.
Owner Responsibilities
This Warranty is issued to the original purchaser only. This product must be used and cared for in accordance
with the instruction manual. You are responsible for required periodic maintenance or service. See your
instruction manual for details. You must be able to verify the installation date of the product against which you
make and warranty claim. The original bill of sale, installer’s invoice or other similar document is required to verify
warranty. If you cannot show evidence of the actual date of installation, warranty coverage shall be extended to
a total to 65 months from when the unit was manufactured. The attached Warranty Registration Form must be
filled out completely and returned to Glow Brand. Failure to do so will prevent or delay our being able to contact
you (or the person residing at this address) in case of a recall or important product safety alert. Your warranty
Warranty Registration Form
[email protected]
PLEASE COMPLETE THE FOLLOWING INFORMATION
RETURN WITHIN 30 DAYS OF COMMISSIONING
THE APPLIANCE (HOT WATER HEATER)
Please Print Clearly
Sold To:
Homeowner's Name:
Address:
Unit #:
City:
Province:
Phone No.
Postal Code:
Fax:
Email Address:
Item Purchased:
Unit Model:
Serial No.
Date of Purchase:
Date of Startup:
Purchased From:
Installing Contractor's Name:
Address:
Phone No.
Email Address:
Signature:
City:
Province:
Postal Code:
Fax:
Date:
Please complete and return this form to Glow Brand.
ATTENTION: Product Registration.
Warranty Registration Form
[email protected]
Please complete the following information and return it with the part request
Contractor / Distributor / Rental Provider Name:
Date:___________________
Address:
Unit #
City:
Prov.
Phone #
Other #
Postal Code:
Email:
Homeowner Name:
Address:
Unit #
City:
Prov.
Phone #
Other #
Postal Code:
Email:
Model Number:
Serial number:
Date installed:
Date Failed:
Failed Part Number:
Date Serviced:
Replacement Part Number:
Failed Part Description:
Reason for Failure:
“FAILED, NOT WORKING, DEFECTIVE” etc.,
is not acceptable and will be considered incomplete.
Incomplete warranty forms will not be accepted or considered. Only a detailed
explanation will be considered for warranty.
All parts returned must be accompanied with a completed warranty tag.
WATER HEATER COMMISSIONING SHEET
BUILDER/SITE NAME:
HOMEOWNER NAME:
ADDRESS:
CITY:
Model #:
Serial #:
CONTRACTOR NAME:
ADDRESS:
CITY:
INSTALLATION DATE:
MM/DD/YEAR
Technician:
DATE:
POSTAL CODE:
POSTAL CODE:
EMAIL:
BLK / LOT #
TEL:
CELL:
OTH:
TEL:
CELL:
FAX:
Prior to commencing any commissioning, Hydro, Gas and Water must be available at the Glow T180 unit
PROCEDURE
READING
Verify that the unit being installed matches the work order
Ensure the venting complies with the installation manual & local codes
Ensure a minimum 24" clearance from the appliance front is maintained
Check for correct voltage & polarity
Verify that all gas and water connections are tight and leak free
Check the gas pressure at the appliance (min. 3.5" wc Nat / 8" wc Lp)
Ensure the pressure relief is installed and operating properly
Ensure the drain tube and condensate hose are properly installed
Check that the condensate trap has been primed and is not obstructed
Inspect and verify the safety components are operating as intended
Bleed all the air from the heating loop / recirculation line if equipped
Verify the outlet water temperature is set to 120°F / 49°C
Ensure the installation manual is left with the appliance
Check the Glow T180's CO₂ % complies with
values listed in the installation manual
REMARKS
NATUAL GAS, (CO₂%)
LIQUID PROPANE (CO₂%)
Check that there is no flammable material or liquids in the immediate vicinity of the appliance
ADDITIONAL COMMENTS
I confirm that the information listed on this commissioning sheet is a true and accurate account of what has been completed.
TECHNICIAN SIGNATURE:
209 Citation Drive, Concord Ontario L4K 2Y8. Tel: 905-264-1414, Fax: 905-264-1147
Email: [email protected]
Website: www.glowbrand.ca
Place
Model and Serial
Here
Instruction & Installation Manual
Model
Glow T180
Tankless Condensing Water Heater
188,000 BTU
Getting Service
1.
2.
3.
4.
5.
6.
When you contact Technical Support, please have the following information at hand.
Model Number
Serial Number
Date Purchased
Installation location and type
Error code, if any appears on the front display.
209 Citation Drive, Concorde Ontario L4K 2Y8
Telephone: 905-264-1414
Fax. 905-264-1147
Email: [email protected]
Website: www.glowbrand.ca
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