INSTALLATION, OPERATING AND
SERVICE INSTRUCTIONS FOR
ES2™
ENHANCED SERIES 2
Gas - Fired Boiler
As an ENERGY STAR® Partner, Burnham Hydronics has determined that this boiler meets the ENERGY
STAR® guidelines for energy efficiency established by the United States Environmental Protection Agency (EPA).
For service or repairs to boiler, call your heating contractor. When seeking information on
boiler, provide Boiler Model Number and Serial Number as shown on Rating Label.
Boiler Model Number
Boiler Serial Number
Installation Date
ES2
Heating Contractor
Phone Number
Address
102538-01R4-2/10
Congratulations on your purchase of a new Burnham® boiler—designed and constructed to provide you
with years of reliable service.
•
•
ENERGY STAR™ efficiency – friendly on the environment and your wallet.
Cast iron heat exchanger – for reliability and durability, nothing beats a cast iron heat exchanger.
Ours is made proudly by our foundry in Zanesville, Ohio.
•
IQ Control™ – the most advanced and easiest to use control available.
•
System-friendly – built-in protection from condensation and thermal shock.
5. q Instruction Envelope (102625-01)
What's in the crate?
q Instruction & Operation Manual
(102538-01)
1. q ES2™ Boiler
q Hydronics Institute Instructions
(81460061)
2. q Vent Damper w/ Carton
4” Damper ES23 (102284-01)
5” Damper ES24 (102284-02)
6” Damper ES25 & ES26 (102284-03)
7” Damper ES27 & ES28 (102284-04)
8” Damper ES29 (102284-05)
q Boiler Warranty Sheet (102198-01)
q Equipment List (102620-01)
5
3. q Circulator & Gasket Kit
Taco 007-2 (8056170)
Grundfos UP-15 (8056173)
B & G NRF-22 (8056174)
1
4. q Miscellaneous Parts Bag (102627-01)
q Temperature/Pressure Gage; ¼” NPT
(100282-01)
q Circulator Mounting Hardware Kit, 1-
1/4” NPT (6056007)
q Circulator Wiring Harness (6130701)
q Drain Valve; ¾” NPT (806603012)
q Pressure Relief Valve; 30 psi
(81660363)
4
2
q Water Manifold for Pressure Relief/
Temp. Gage (80607001)
3
3
SPECIFICATIONS
Ratings
ES2 Series
Boiler Model
Input (MBH) DOE Heating Capacity (MBH) Net I=B=R Rating (MBH) AFUE (%)
ES23
ES24
ES25
ES26
ES27
ES28
ES29
70
59
88
51
77
85
85
85
85
85
85
85
105
140
175
210
245
280
118
147
176
206
235
102
128
153
179
205
Electrical Requirements: 120VAC, 60 Hz, 1-ph, 15A
Dimensions and Connections
Boiler
Model
Supply NPT Return NPT Vent Gas NPT Relief Valve
Drain
Depth Width Height
(inch)
(inch)
(inch)
(inch)
NPT (inch) NPT (inch)
ES23
ES24
ES25
ES26
ES27
ES28
ES29
33
33
33
33
33
33
33
12¾
15½
18½
21½
24¾
27¾
30¾
41
41
41
41
41
41
41
1¼
1¼
1¼
1¼
1¼
1¼
1¼
1¼
1¼
1¼
1¼
1¼
1¼
1¼
4
5
6
6
7
7
8
½
½
½
½
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
¾
Water Temperatures and Flows
Allowable Supply
Water Temperature Water Temperature
Minimum Return
Waterside Pressure Drop
at 20°F DT
Minimum Flow
Boiler Model
(GPM)
(°F)
(°F)
(Ft. of Head)
ES23
ES24
ES25
ES26
ES27
ES28
ES29
130-220
130-220
130-220
130-220
130-220
130-220
130-220
110
110
110
110
110
110
110
None
None
None
None
None
None
None
<1
<1
<1
<1
<1
<1
<1
Weights and Volume
Boiler
Model
Shipping Weight
Empty Weight
Water Content
(lbs)
(lbs)
(gal)
ES23
ES24
ES25
ES26
ES27
250
300
350
410
460
170
220
270
320
370
2
3
4
5
5
ES28
ES29
510
560
420
470
6
7
4
SPeCIfICAtIoNS (continued)
Figure S-1: Minimum Clearances to Combustibles and Closet Dimensions
5
Boiler Quick-Start
Installation:
1. Unpack the crate ............................................................................................. 7
2. Position the boiler............................................................................................ 7
3. Provide combustion air.................................................................................... 8
4. Connect venting............................................................................................... 8
5. Connect gas piping........................................................................................ 10
6. Connect boiler water piping........................................................................... 10
7. Connect electrical wiring................................................................................ 12
8. Program the controls ..................................................................................... 13
9. Check for gas and water leaks ...................................................................... 15
10. Perform startup checks and adjustments ...................................................... 16
Annual Maintenance Checklist............................................................................ 17
Troubleshooting.................................................................................................... 18
Repair Parts List................................................................................................... 21
Internal Wiring....................................................................................................... 27
Appendices:
A – Combustion Air..................................................................................................32
B – Venting..............................................................................................................33
C – Gas Piping ........................................................................................................36
D – System Piping...................................................................................................37
E – Filling the System and Checking for Leaks.......................................................43
F – Adjusting Gas Input Rate ..................................................................................44
G – Checking Draft and Combustion.......................................................................46
H – IQ Control System.............................................................................................47
Warranty.................................................................................................. Back Cover
ꢀ
1. UNPACk THE CRATE
4. Tip the boiler and shimmy it off the skid.
THE BOILER IS TOP-HEAVY. Do not
allow it to tip over.
1. Remove the sleeve.
2. Remove the contents from the skid, except
the boiler.
3. Remove the four (4) hex-drive lag screws
holding the boiler to the skid (Figure 1-a).
1-a
1-b
2. POSITION THE BOILER
WARNINGS
OBSERVE MINIMUM CLEARANCES to
combustible walls and ceilings to avoid potential
fire hazard.
CLEAN BURNERS DAILY if operating the boiler in
a dusty environment.
PROTECT IGNITION SYSTEM COMPONENTS
from sources of water that may spray, drip, or rain
on them during installation or service.
DO NOT INSTALL ON CARPET. This may cause
a fire.
INSTALLING THE BOILER NEAR A SOURCE OF
FLAMMABLE LIQUIDS or gases may cause fire or
explosion.
1. Slide the boiler into desired location.
3. Allow 24" service clearance in front and on
the left side of the boiler.
2. Meet the minimum clearances to
combustible construction per the
Specification Section of this manual.
4. Level the boiler, using shims as necessary.
ꢀ
3. PROVIDE COMBUSTION AIR
Like all fuel-burning appliances, boilers need air to
operate reliably and safely.
INSUFFICIENT COMBUSTION AIR
SUPPLY may result in the production and
release of deadly carbon monoxide (CO) into the
home which can cause severe personal injury or
death.
Provide combustion air using the instructions in
Appendix A—Combustion Air.
4. CONNECT VENTING
(i.e. Type B gas vent or flexible metal) as
required by NFPA 54 and applicable local
codes. Clay flue lined masonry chimneys do
not meet the venting requirements for this
appliance.
IMPROPER VENTING may result in
property damage and the release of flue
gases which contain deadly carbon monoxide (CO)
into the home, which can cause severe personal
injury, death or substantial property damage.
2. Attach the vent damper with three
sheetmetal screws around the perimeter of
the flue collar (Figure 4-a), oriented so that
the position indicator is visible. The vent
damper may also be mounted anywhere
between the flue outlet and the chimney
within reach of the electrical harness.
The vent system shall be designed and
constructed in accordance with NFPA 54 and
applicable local codes to develop a positive flow
adequate to convey flue or vent gases to the
outdoors, while ensuring that flue gases do not
cool prematurely.
Observe all general venting guidelines provided in
Appendix B—Venting. Additionally:
3. Vent connector shall be double-wall
insulated gas vent as supplied with this
boiler or Type B (double-wall) gas vent only.
Using sheetmetal screws, attach the vent
connector between the vent damper and
the vertical chimney (Figure 4-b). Do not
exceed the maximum vent connector length
in Table 4.1.
1. This appliance shall be vented into a listed
gas vent, masonry, metal, or factory-
built chimney as required by NFPA 54
and applicable local codes for Category I
appliances. If venting this appliance into
a masonry chimney, the chimney must be
lined with a listed chimney lining system
4-a
4-b
DAMPER MUST BE OPEN when the main burner is firing.
8
4. CoNNeCt VeNtING (continued)
Table 4.1: ES2 Vent Connector - Horizontal Length Restrictions (ft)
Model
ES23
70
ES24
105
ES25
140
ES26
175
ES27
210
ES28
245
ES29
280
Input (MBH)
Minimum Vent
Diameter (in)
4
5
6
6
7
7
8
Vent Height (ft)
With B-Vent (double wall) Vent Connector
6
8
0
0
6
0
4
0
2
8
8
8
2
8
2
8
10
15
20
30
50
100
10
15
20
20
20
20
10
15
20
30
30
30
10
15
20
30
30
30
10
15
20
30
30
30
10
15
20
30
30
50
10
15
20
30
30
50
10
15
20
30
30
50
ꢁ
5. CONNECT GAS PIPING
Size gas piping according to Appendix C – Gas
Piping
nipples and street ells are not approved for
use as gas piping.
SHUT OFF GAS SUPPLY before
servicing the boiler.
3. Pipe through the left jacket panel, and
complete drip leg as shown (Figure 5-a).
ALL GAS PIPING MUST BE GAS
TIGHT. Use gas rated thread compound
on all threaded joints to avoid leaks, which may
result in fire or explosion.
SIZE GAS PIPING, regulators, valves,
and meters so as to provide an adequate
gas flow and pressure to the boiler during
operation. Failure to do so may cause poor
combustion, noise, injury, or death.
1. Remove boiler door, locate gas valve and
remove plastic shipping plug.
2. Thread a ¾" x 1½" nipple, a 90° street
elbow, or a Honeywell flange onto the gas
valve and pipe through the slot in the left
jacket panel (Figure 5-a). In Canada, close
5-a
6. CONNECT BOILER WATER PIPING
General system piping guidelines are included in
Appendix D—System Piping.
2. Screw the water supply manifold into the
boiler outlet tapping “O.”
Additionally, for this particular boiler install piping
shown below (Figure 6-a).
3. Orient the manifold with the relief valve on
top.
4. Screw the relief valve into manifold tapping
“RV”.
RV
O
This installation is not complete until the
relief valve is installed.
i
S
PIPE THE RELIEF VALVE DISCHARGE
to a location where it will not harm
people or damage property. The relief valve may
discharge scalding hot water or steam.
G
R
BLOCKING THE RELIEF VALVE may
result in boiler explosion.
5. Screw the temperature-pressure gage into
manifold tapping “G”.
D
6-a
1. Apply sealant to all threads.
6. Connect the system supply to the open end
of the manifold "S" using a 1¼” male NPT
fitting.
10
6. CoNNeCt BoILeR WAteR PIPING (continued)
7. Screw an installer-supplied 1¼” pipe or
nipple into the water return tapping “R”.
9. See Figure 6b for suggested near boiler
piping of IQ Options.
8. Screw the supplied drain valve into tapping
“D”.
6-b
Item
Description
Burnham Part Number
1
2
3
4
5
6
7
8
1¼ x 1¼ x ½ Tee
806601021
80160456
Immersion Well, ½ NPT
1¼ x 6 Nipple
806600029
806601030
806600504
102305-01
806600005
806601528
1¼ Tee
1¼ x ¾ Bushing
LWCO Sensor, ¾ NPT
1¼ x 3 Nipple
1¼ Elbow
11
ꢀ. CONNECT ELECTRICAL WIRING
DISCONNECT ELECTRICAL POWER
to the boiler and heating system before
servicing. Positively assure that no voltage is
present. Lock electrical boxes to prevent someone
from inadvertently restoring power before the
heating system is safe to operate.
NEVER DEFEAT OR JUMP OUT safety
devices.
PROTECT EACH BOILER circuit with a
properly sized over-current protection
device.
MAKE ELECTRICAL CONNECTIONS
CAREFULLY according to the boiler’s
wiring diagram and instructions
7-a
Refer to the Internal Wiring diagrams later in this
manual.
1. Locate the wiring box on the left side of the
boiler and open the cover (Figure 7-a).
2. Install a 120V disconnect near the boiler.
3. Connect the 120V wiring from the disconnect
to the boiler's white (neutral), black (hot),
and green (ground) labeled "120VAC Power
supply". Do not reverse polarity.
T
3
T
2
1
4. Connect the 120V wiring from the circulator
to the white (neutral) yellow (hot) wires
marked "circulator".
WIRE AN ADDITIONAL SAFETY LIMIT
such as a low water cutoff or temperature
limit device, other than an IQ™ Control device,
in series with the 120V circuit used to power the
boiler. Do not alter the boiler’s factory wiring when
adding an additional limit.
7-b
5. Connect the 24V wiring from the thermostat
to the "T-T" terminals on the Option Control
Panel.
6. To connect other external devices, refer to
the instructions included with these devices.
12
8. PROGRAM THE CONTROLS
Using IQ Boiler Control Display
Viewing the operating Mode options
In operating mode the user may view (but not
change) boiler operating status, settings and
troubleshooting information. To view IQ Boiler
Control display information:
The IQ Boiler Control is located inside the boiler
front door, just above the IQ Option Panel (Figure
8-a).
1. Press and release the “I” key on the IQ
Boiler Control to change from one parameter
to the next. Each setting will alternately flash
between the relevant display code and its
corresponding value.
IQ Boiler Control
Operating Mode Options
StA Status
bt
SP
HL
Boiler Temperature
Operating Setpoint (Outdoor Reset)
High Limit Setting
HdF High Limit Differential
hr Heat Request Status
FLA Flame Current
IQ option Panel
rUn Run Time Hours
CYC Boiler Cycles
8-a
Err Error (see Error Numbers)
Status Code Displayed in STAMode
1
Standby:
The IQ Boiler Control display, along with Up ñ,
Down ò, and “I” keys may be used to view boiler
operating status (Figure 8-b). Please note that
these keys look similar to the keys on the IQ
Option Panel but are in a different orientation, and
they perform different functions.
Either TT Open or TT Closed and Boiler Temperature
within Setpoint & Differential with circulator running.
4
6
7
8
Prepurge
Spark
Flame Proving
Running
10 Retry/Recycle Delay
13 Soft Lockout
14 Hard Lockout
15 Waiting for Limit to Close
16 Flame Present Out of Sequence
17 Self Test
ñ
18 Waiting for Damper to Open
19 Waiting for Damper to Close
20 Damper Failure to Open
21 Damper Failure to Close
I
ò
For example, when the “I” key is pressed on the
IQ Boiler Control until “bt” is displayed, it will then
flash a three digit number (such as “180”) followed
by either “F” (or “C”). This indicates that the boiler
water temperature is 180°F. Other operating
parameters display the information in a similar
fashion.
IQ Boiler Control
8-b
13
8. PRoGRAM the CoNtRoLS (continued)
with a High Limit Setpoint of 180°F. The
Unit Display
1 sec
1 sec
boiler turns "off" when the supply water
temperature is above this value. The High
Limit setpoint is adjustable between 130°
and 220°F. The Operating Setpoint (SP) will
equal the High Limit Setpoint unless an IQ
Outdoor Reset IQ Option Card is installed.
The Outdoor Reset IQ Option Card reduces
the Operating Setpoint to regulate heat
delivery, increase home comfort and
save energy. Refer to the Appendix H for
additional information.
1 sec
OR
Sample
Display
Please note that in operating mode to hold the
display on the value the user can press and hold
either the Up ñor Down òkeys and the value
will be continuously shown. This may be helpful in
watching a value “live”.
Changing the Adjustable Parameters
To adjust the High Limit setpoint, High Limit
Differential or Pump Overrun time settings or
setting the display for either °F or °C temperature
readings:
2. Differential (df_)
The IQ Boiler Control is factory programmed
with a Differential of 15°F. The Differential
is the number of degrees the supply
temperature must decrease below the
Operating Setpoint before the boiler can
restart. The differential is adjustable
between 10° through 30°F.
1. Access the adjustment mode by pressing
and holding the Up ñ, Down ò, and “I”
keys simultaneously for three (3) seconds.
This procedure is intended to discourage
unauthorized changes or accidental changes
to limit settings.
3. Pump Overrun Time (OR_)
The IQ Boiler Control is factory programmed
with a Pump Overrun Time of 0 minutes.
Pump Overrun Time (also called “off delay”
or “post purge”) continues pump operation
after a call for heat has ended, sending
excess heat from the boiler into the priority
zone. Ensure system piping and zone panel
settings allow water flow to the priority zone
after the call for heat ends. The Pump
Overrun Time is adjustable between 0
through 10 minutes.
2. Press the "I" key to display available
Adjustment Mode options. Select an option.
Adjustment Mode Options
HL_
dF_
Or_
rst
f-C
bac
Adjust High Limit Setting
Adjust High Limit Differential
Pump Overrun Time (minutes)
Reset Lockout
Select degrees F or C Mode
Back to Operating Mode
3. Press the Up ñand Down òkeys to adjust
the displayed setpoint to the desired value.
Using the IQ option Panel
IQ Option Cards are available from Burnham
distributors and are the simplest way to add
functionality, safety and efficiency to your heating
system. The IQ Option Panel provides an easy and
convenient means to "plug-in" an Auxiliary High
Limit, Low Water Cut-off and/or Outdoor Reset
function.
4. To return to the normal operating mode
from the Adjustment Mode, when the "bAc”
option is displayed, press either the Up ñor
Down òkey. If no keys are pressed, after
five (5) minutes the IQ Boiler Control will
automatically return to the Operating Mode.
More Information about Adjustable Parameters
1. High Limit (HL_)
The IQ Control is factory programmed
For installation, programming, and troubleshooting
instructions, refer to the instructions supplied with
those cards.
14
8. PRoGRAM the CoNtRoLS (continued)
Using the optional LCD Display Kit
with graphic and help information screens. The
LCD Display Kit includes a mounting bracket
and wiring harness to allow mounting in the ES2
plastic hood above the front door. For installation,
programming, and troubleshooting instructions,
refer to the instructions supplied with the display.
The LCD Display is an easy to use touch screen
type display that allows a technician to monitor
and adjust the IQ Boiler Control and connected
IQ Option Cards. All boiler settings, status and
error codes are displayed in full text. All Outdoor
Reset IQ Option Card parameters are adjustable
ꢁ. CHECk FOR GAS AND WATER LEAkS
Refer to Appendix E – Filling the System and
Checking for Leaks
GAS LEAKS may result in fire or
explosion.
WATER LEAKS may cause extensive
property damage.
15
10. PERFORM STARTUP CHECkS AND ADjUSTMENTS
FAILURE TO PERFORM THESE
CHECKS of the boiler's combustion and
safety systems may result in serious property
damage, injury, or death.
IF YOU SMELL GAS, STOP and repair
the leak. Lighting the boiler when gas is
leaking may cause explosion or fire.
Follow the checklist below:
1. Verify that the venting, water piping, gas
piping, and electrical systems are properly
installed and checked.
2. Apply power to the boiler.
10-b
3. Adjust zone thermostat to maximum setting.
4. Allow gas line to purge of air.
q Boiler lights cleanly within 60 seconds.
8. Adjust zone thermostat to minimum setting.
q Boiler shuts off.
5. Adjust gas input rate. See Appendix F
– Adjusting Gas Input Rate
9. Adjust zone thermostat to maximum setting.
10. Observe temperature gage as boiler heats.
11. Adjust the high limit setting to its minimum
level (see "Programming High Limit" in
Section 8).
q Boiler shuts off when temperature gage
reads within 15°F of high limit setting.
12. Return high limit to the desired setting (see
"Programming High Limit" in Section 8).
13. Check draft. See Appendix G
– Checking Draft and Combustion.
10-a
q No spillage observed.
14. Check combustion in the vent stack and
record results in the spaces provided below.
q Pilot and main burner flames appear
clean and blue.
_____ CO2 (less than 7%)
6. Disconnect pilot lead wires from gas valve
(Figure 10-b).
_____ O2
(more than 9%)
_____ CO
(less than 100 ppm, air free)
q Boiler shuts off.
ANY FAILED STARTUP CHECK
Must be corrected before placing the
7. Reconnect pilot lead wires to gas valve.
boiler in service.
q Boiler restarts.
16
ANNUAL MAINTENANCE CHECkLIST
WARNINGS
personal injury or death, and extensive property
damage.
THE BOILER CONTAINS REFRACTORY
CERAMIC FIBER, a possible human carcinogen
Use a NIOSH approved respirator when servicing
high-temperature insulation and gasket materials.
Wash exposed skin gently with soap and water
after contact Wash exposed clothing separate
from normal laundry.
TURN OFF ALL GAS AND ELECTRIC power
supplies to the boiler before servicing. Contact with
or release of dangerous flammable gas, electrical
voltage, moving parts, and very hot water under
pressure may cause serious personal injury,
property damage, or death.
LABEL ALL WIRES prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation
LOCK ELECTRICAL BOXES AND GAS VALVES
CLOSED to prevent someone from inadvertently
restoring power or gas before the heating system is
safe to operate.
FAILURE TO MAINTAIN THE BOILER in proper
working condition may lead to fire, explosion,
Equipment you will need:
(7) Hold burner at throat. Lift front of burner
to clear orifice (Figure AM-1). The
burner that holds the pilot can only be
removed by first lifting the burner
adjacent to its right.
q Soft bristle brush
q Bristle flue brush
q Vacuum with brush attachment
Perform these tasks each year:
1. Clean low water cutoff probe (if applicable).
6. Perform Startup Checks and Adjustments
described earlier in this manual.
7. Check operation of airflow sensing switches.
2. Inspect vent for obstruction and signs of
condensation, distortion, overheating or gas
leakage.
8. Check for water leaks on the boiler or water
pooling around boiler.
3. Clean vent terminal and air intake screens.
9. Manually operate the relief valve. If the
water is grey or black, there is excessive
oxygen in the system. Oxygen is corrosive
to boilers. Eliminate any source of oxygen.
4. Inspect boiler flue passages:
(1) Remove vent pipe, damper.
(2) Remove top panel and hood.
10. Verify proper operation after servicing.
(3) Remove blocked vent switch and
canopy.
(4) Examine all flue passageways. Using
bristle flue brush and vacuum,
remove any soot or obstructions.
5. Remove and clean main burners:
(1) Remove jacket front panel.
(2) Disconnect pilot tubing at gas valve.
(3) Disconnect pilot lead wires at gas valve.
(4) Remove wires from flame roll-out switch.
(5) Remove burner access panel.
(6) Mark location of the pilot main burner on
the manifold if the marking on manifold
is missing or obliterated.
AM-1
1ꢀ
TROUBLESHOOTING
When a problem occurs with the boiler operation, the Burnham IQ Control System easily provides specific,
valuable information to help resolve the issue quickly. The display on the IQ Boiler control should be the
first place to check.
If "Err"IS Not displayed on the IQ Boiler Control: Use the following table to determine the problem
and possible causes.
IQ Boiler Control Status Codes (when "Err" is not displayed)
Display
Blank
Status
Boiler / Control Action(s)
Boiler and
Circulator off
No 120 Vac power at boiler, check breaker and wiring between breaker panel and boiler.
Boiler not
responding to
Heat Request
Boiler is not seeing Heat Request. Check thermostat or zone wiring for loose connection,
miswiring, or defective thermostat or zone control.
1
8
Check wiring for loose connection, miswiring. When there is a Domestic Hot Water Heat Request
wired to the Outdoor Air Reset card the Circulator will be off for the duration of the priority time.
This to allow all of the boiler output to be provided for fast Indirect Water Heater recovery. Check
Priority Time (pt_) function using Outdoor Air Reset IQ Option Card Adjustment Mode (see Reset
Card Adjustment Mode instructions).
Boiler Running
but Circulator
is not Running
The burner failed to light (no flame signal).
Retry Delay
After a 5 minute delay, IQ Control will attempt to light the burner again.
There is no limit to the number of retries.
10
10
The burner loses flame during running mode (
code "8").
After a 10 second delay, IQ Control will attempt to light the burner again.
Recycle Delay
If the burner loses flame during running mode (
Control will progress to a soft lockout.
code "8") during the next six recycles, IQ
When a soft lockout occurs, boiler will shut down.
Boiler automatically restarts once condition that caused the lockout is corrected and the one-hour
time delay is completed.
Boiler can be restarted sooner than the time delay by using Adjustment Mode function and
manually resetting boiler (see Adjustment Mode instructions).
Soft Lockout
Hard Lockout
13
When a hard lockout occurs boiler shuts down.
Boiler will NOT automatically restart once the condition that caused the lockout is corrected.
It will be necessary to go to Adjustment Mode function to manually reset the boiler (see
Adjustment Mode instructions).
Heat Request occurs and start of operating sequence is halted due to an open limit.
Open limits may include Flame Roll Out Switch, Blocked Vent Switch, or Auxiliary.
Limit or Low Water Cutoff IQ Option Cards (when installed), refer to IQ Option Panel display for
additional information.
14
15
Wait for Limit
to Close
Flame Out of
Sequence
Flame Signal is still present when expected to be 0 (no flame).
16
18
Waiting for
Damper to Open
Heat Request occurs and the IQ control is waiting for the damper to open (end switch to close).
The damper end switch is closed and the control waits for the damper end switch to open (*end
switch is open when damper is closed). This is checked at the beginning of a heat cycle before
opening the damper. If the damper doesn't close in 60 seconds, the IQ Control goes to Status 21.
Waiting for
Damper to Close
19
18
tRoUBLeShootING (continued)
IQ Boiler Control Status Codes (when "Err" is not displayed) - continued
Display
Status
Boiler / Control Action(s)
Damper Failed
Open
The damper end switch has not closed (damper end switch is open) at the beginning of
the heat cycle. An alarm message is sent but the control is not in lockout.
20
21
The damper end switch has not opened (damper end switch is closed) at the
beginning of the heat cycle. An alarm message is sent but the control is not in lockout.
Damper Failed
Closed
If "Err"IS displayed on the IQ Boiler Control: "Err" flashes on the IQ Boiler control display followed
by a number. Use the following table along with this error number to determine the problem and possible
causes:
IQ Boiler Control Error Codes (when "Err" is flashing)
Display
Blank
Status
Boiler / Control Action(s)
Boiler and Circulator off No 120 Vac power at boiler, check breaker and wiring between breaker panel and boiler.
Flame Current Lower
Check pilot assembly.
than Threshold
4
Err
Flame Sensed Out of
Normal Sequence
Flame sensed out of normal sequence (before opening gas valve or after closing gas
valve).
6
Err
Err
Err
Electronics Failure
Replace Control .
18
24
Flame Sensed During
Post-Purge
Flame sensed during post-purge (after gas valve signaled closed).
Temperature Sensor
Failure
Temperature sensor or interface failure (open or short connection, increased connection
resistance, dual sensor mismatch) or control hardware failure.
32
Err
Damper Failed
to Open
Atmospheric Damper End Switch failed to close (end switch contacts stuck open).
55
56
57
Err
Err
Err
Damper Failed to Close Atmospheric Damper End Switch failed to open (end switch contacts stuck closed).
Flame Rod Shorted to
Burner Ground
Flame Rod shorted to burner ground, this can result from excessive flue gas
condensation.
AC Line Frequency Error AC Signal is too noisy or frequency is incorrect.
58
59
Err
Err
Line Voltage Error
AC voltage out of specification high or low.
Thermostat Input Higher
than Threshold
Check thermostat wiring.
60
61
63
Err
Err
Err
Line Voltage Unstable
Possibly too many heavy loads switching on and off cause erratic supply voltage.
Maximum number of recycles exceeded.
Soft Lockout - Maximum
Recycles Exceeded
Soft Lockout - Internal
Failure
Caused by general electronics failure such as relay open or shorted contacts, flame
sensing circuit error, or A to D error.
64
Err
1ꢁ
tRoUBLeShootING (continued)
If IQ Boiler Control Shows Status Code “STA 15": The IQ Boiler Control is “Waiting for Limit to Close”
and the display on the IQ Option Panel should be the first place to check. The IQ Option Panel display
(lower display) will show one of the following status codes:
IQ Option Panel Display Shows “ERR"
Display
Status
Boiler / Control Action(s)
Err
1
Low Input Voltage AC voltage is too low
Whenever a new IQ Option Card is first installed into the IQ Option Panel, the IQ Option
Panel automatically “Learns” the card. This means it detects the specific card and lists
it as a card number (C1, C2, or C3). However, to help avoid errors or unauthorized
option card changes, once an IQ Option Card is initially installed, the IQ Option Panel
will not automatically “Learn” a different card in the same slot. In this situation, the IQ
Option Panel has to “Learn” about the new card manually. To have the IQ Option Panel
recognize or “Learn” about a different card, the user must press the “I” key on the IQ
Option Panel until “Lrn” is displayed. Then press and hold either the Up ñor Down ò
key for at least three (3) seconds. The IQ Option Panel will then recognize and “Learn”
the new IQ Option Card.
IQ Option Card
Type Change
without Re-Learn
Err 2- card #
IQ Option Card
The IQ Option Card is not installed properly or has an internal fault. Remove the card
Err 3- card #
Communications and check for bent IQ Option Panel card interface pins. Straighten bent or misaligned
Error
pins or choose another card slot and reinstall card. If problem persists, replace card.
The IQ Option Card is not installed properly, there is a option card or IQ Option Panel
fault. Remove the card and check for bent IQ Option Panel card interface pins.
Straighten bent or misaligned pins or choose another card slot and reinstall card. If
problem persists, replace card.
IQ Option Card
Hardware
Interface Error
Err 4- card #
Limit Output OFF
in ON State
Err
Err
Err
5
6
7
Check limit string wiring, replace the IQ Option Panel.
Check boiler wiring.
Incorrect Wiring
Limit Output ON
in OFF State
Check limit string wiring, replace the IQ Option Panel.
Err
8
Internal IQ Option
8
Replace the IQ Option Panel.
Panel Error
If IQ option Panel Display Shows “OL": The OL- “card number” indicates the card slot causing the Open
Limit. For example, “OL-C1" means open limit in the card located in card slot 1. To determine the cause
of the open limit the user must switch the display on the IQ Option Panel to show the view mode of the IQ
Option Card installed in Slot 1.
For example, if, while the boiler has a Heat Request, and the Aquastat IQ Option Card installed in Slot 1
has a sensor failure the IQ Option Panel displays OL-C1(Open Limit Card Slot 1). To investigate the status
of option card C1:
1. Press the “I” key on the IQ Option Panel. The display will go from “OL-C1” to C1.
2. When the display shows C1, press either the Up ñor Down òkeys to switch the display to show the
view mode of the Aquastat Limit Control IQ Option Card inserted in Slot 1. The display will now read
Err -119, Sensor Failure.
3. Check the sensor connections and when required replace the sensor.
4. When the sensor failure is corrected the IQ Option Panel will return to the “O.C.P" display and the IQ
Boiler Control start sequence will continue.
For additional information refer to the instruction manual supplied with the IQ Option Card.
If IQ option Panel Display Shows “O.C.P": The Option Panel is in normal run or operating mode, the IQ
Option Panel display will show “O.C.P" (Option Card Panel) along with a floating decimal point that flashes
on and off (the “heartbeat” flash indicating the panel is functioning properly and there are no open limits or
errors). The Option Panel or the card installed in the option panel are not causing the open limit.
1. Check for loose boiler wiring and check flame roll out & blocked vent switches.
20
REPAIR PARTS LIST
[Quantity] Part Number
ES25 ES26 ES27
Key
No.
Description
ES23
ES24
ES28
ES29
1A Block Assembly
1B Canopy Gasket Kit
1C Canopy Assembly
102287-03
102287-04
102287-05 102287-06 102287-07 102287-08 102287-09
6206001
102554-03
102554-04
102554-05 102554-06 102554-07 102554-08 102554-09
[2]
[3]
[4]
[5]
[6]
[7]
[8]
1D Flue Baffle
102678-01
102678-01
102678-01 102678-01 102678-01 102678-01 102678-01
Blocked Vent Switch
(not shown)
80160157
21
RePAIR PARtS LISt (continued)
[Quantity] Part Number
Key
No.
Description
ES23
ES24
ES25
ES26
ES27
ES28
ES29
2A Base Wrapper
71807031 71807041 71807051 71807061 71807071
71807081
71807091
2B Base Tray
102543-03 102543-04 102543-05 102543-06 102543-07 102543-08 102543-09
2C Burner Tray Assembly
2D Base Front Panel
2E Burner Access Panel
2F Base Gasket Kit
2G Base Side Insulation
2H Base Rear Insulation
61807031 61807041 61807051 61807061 61807071
61807081
71807085
71807086
61807091
71807095
71807096
71807035 71807045 71807055 71807065 71807075
71807036 71807046 71807056 71807066 71807076
6206002
[2] 72007001
72007031 72007041 72007051 72007061 72007071
72007081
72007082
72007091
72007092
2J
2K Base Leg Assembly
2L Flame Roll-out Switch
2M Manifold Support Bracket
Base Front Insulation
72007032 72007042 72007052 72007062 72007072
[4] 6186001
80160044
71807001
22
RePAIR PARtS LISt (continued)
[Quantity] Part Number
ES25 ES26 ES27
Key
No.
Description
ES23
ES24
ES28
N/A
ES29
Gas Valve (Natural Gas),
Honeywell VR8204P1171
81660282
Gas Valve (Natural Gas),
Honeywell VR8304P4496
N/A
81660146
N/A
81660283
N/A
3A
Gas Valve (LP Gas), Honeywell
VR8204C3015
Gas Valve (LP Gas), Honeywell
VR8304P4314
81660160
N/A
½" Gas Manifold
¾" Gas Manifold
82207031 82207041 82207051 82207061
N/A
3B
3C
82207071 82207081 82207091
[4]
822710
[6]
822710
[8]
822710
[10]
822710
[12]
822710
[14]
822710
[16]
822710
Burner Orifices - Natural Gas #47
Burner Orifices - LP Gas 1.20mm
[4]
822792
[6]
822792
[8]
822792
[10]
822792
[12]
822792
[14]
822792
[16]
822792
3D Pilot Burner
Pilot Assembly - Natural Gas
Pilot Assembly - LP Gas
100147-01
102592-01
102593-01
[9]
3E
[3]
[5]
[7]
[11]
[13]
[15]
3F Main Burner
3G Pilot Tubing
100146-01 100146-01 100146-01 100146-01 100146-01 100146-01 100146-01
8236122
23
RePAIR PARtS LISt (continued)
[Quantity] Part Number
Key
No.
Description
ES23
ES24
ES25
ES26
ES27
ES28
ES29
4A
4B
4C
4D
IQ Boiler Control
IQ Option Panel
Transformer
102289-01
102291-01
102516-01
102411-01
Temperature Sensor
24
RePAIR PARtS LISt (continued)
[Quantity] Part Number
Key
No.
Description
ES23
ES24
ES25
ES26
ES27
ES28
ES29
5A
5B
5C
5D
5E
5F
5G
5H
5J
Jacket Left Side Panel
Jacket Right Side Panel
Jacket Rear Panel
102566-01
102567-01
102569-03 102569-04 102569-05 102569-06 102569-07 102569-08 102569-09
102565-03 102565-04 102565-05 102565-06 102565-07 102565-08 102565-09
102568-03 102568-04 102568-05 102568-06 102568-07 102568-08 102568-09
102576-03 102576-04 102576-05 102576-06 102576-07 102576-08 102576-09
102549-03 102549-04 102549-05 102549-06 102549-07 102549-08 102549-09
102600-03 102600-04 102600-05 102600-06 102600-07 102600-08 102600-09
102621-01
Jacket Vestibule Panel
Jacket Top Panel
Jacket Front Door
Jacket Rear Discharge
Jacket Poly Front Cover
Upper Poly Grille
5K
Lower Poly Grille
102622-01
25
RePAIR PARtS LISt (continued)
[Quantity] Part Number
ES25 ES26 ES27
Key
No.
Description
ES23
ES24
ES28
ES29
6A
6B
6C
6D
6E
6F
Supply Water Manifold
Temperature/Pressure Gauge
Circulator Wiring Harness
30 PSI Relief Valve
Drain Valve
80607001
100282-01
6130701
81660363
806603012
Vent Damper
102284-01 102284-02
102284-03
102284-04
102284-05
Circulator (not shown):
Taco 007-2
8056170
8056173
8056174
Grundfos UP-15
B & G NRF-22
26
INTERNAL WIRING
Figure IW-1: Wiring Diagram
2ꢀ
INteRNAL WIRING (continued)
Figure IW-2: Wiring Schematic
28
INteRNAL WIRING (continued)
Figure IW-3: Single Zone System with Domestic Hot Water Tank
Figure IW-4: Multiple Zone System with Zone Circulators
2ꢁ
INteRNAL WIRING (continued)
Figure IW-5: Multiple Zone System with Zone Valves
Figure IW-6: Multiple Zone System with Zone Circulator Panel
30
INteRNAL WIRING (continued)
DHW AQUASTAT
(L4006, L4080)
(SUPPLIED BY OTHERS)
POWER
SUPPLY
120/60/1
L2
L1
THERMOSTAT THERMOSTAT THERMOSTAT
24V
TRANSFORMER
DOMESTIC HOT WATER PRIORITY IS
SELECTED USING ZONE PANEL SWITCH
MODE
ZONE 4 PRIORITY
NORMAL RESET
OFF
ON
POWER IN
IQ OPTION PANEL
T
T
T
T
T
T
T
T
ZONE 1
ZONE 2
ZONE 3
ZONE 4
T STAT 1
VALVE 1
T STAT 2
VALVE 2
T STAT 3
VALVE 3
T STAT 4
VALVE 4
POWER
5
6
7
8
1
2
3
4
1
2
3
TACO ZVC 404 (OR EQIV.)
FOUR ZONE ZONE VALVE CONTROL
WITH OPTIONAL PRIORITY
L1
L2
MAIN EXTRA
END END
SWITCHSWITCH
MAIN EXTRA
END
END
ZONE 1
ZONE 2
ZONE 3
ZONE 4
N/O COM N/C
ZONE 4 RELAY
N/O COM N/C
ZONE 4 RELAY
SWITCHSWITCH
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
JUMPER
JUMPER
3
&
4
3
&
4
1
2
3
T
T
PRIORITY
ZONE
1
2
3
4
WIRE ZONE
VALVE
2
WIRE ZONE
VALVE
2
WIRE ZONE
VALVE
DHW
DHW
(POWER OPEN,
SELF CLOSING)
(NO END SWITCH)
(NO END SWITCH)
CIRCULATOR
(SUPPLIED BY
OTHERS)
CIRCULATOR
(SUPPLIED BY
OTHERS)
BOILER JACKET
PANEL
SYSTEM
CIRCULATOR
SYSTEM
CIRCULATOR
(SUPPLIED BY OTHERS)
(SUPPLIED BY OTHERS)
LINE VOLTAGE FACTORY WIRING SIZE 14 AWG TYPE TW OR TEW/AWM WIRE
LINE VOLTAGE FIELD WIRING
WIRING USED WHEN DOMESTIC
HOT WATER PRIORITY NOT DESIRED
WIRING USED WHEN DOMESTIC
HOT WATER PRIORITY IS DESIRED
Figure IW-ꢀ: Multiple Zone System with Zone Valve Panel
31
APPENDIX A – COMBUSTION AIR
4. If the Floorspace from Step 1 is less than the
PROVIDE ENOUGH AIR to ventilate the
boiler room, dilute the flue gases, and
sustain combustion. Ignition failure, overheating,
fire, carbon monoxide, and spillage of flue gases
may result from poor air supply.
Minimum Floorspace from Step 3, then you
must provide outdoor air to the boiler room.
Proceed to Step 6.
Is the boiler located in a building of unusually tight
construction?
If the boiler is a Direct Vent boiler and exchanges
all combustion air and combustion products
directly with the outdoors, there are no special
requirements for providing combustion, ventilation,
and dilution air.
5. If the answer to all of the three questions
below is “yes”, then you must provide
outdoor air to the boiler room.
Do the walls and ceilings exposed to the
outside atmosphere have a continuous
water vapor retarder with a rating of 1 perm
or less, with openings gasket or sealed?
If the boiler is chimney vented, power vented or
induced draft and draws combustion air from within
the building, follow the steps below to determine
how to provide air to the boiler.
Yes No
Is the boiler located in a confined space?:
Are operable windows and doors
weatherstripped?
1. Calculate the floorspace (in square feet) of
the boiler room and all rooms connected
to the boiler room by passageways not
furnished with doors.
Yes No
Are exterior wall joints caulked or sealed?
Yes No
___________ floorspace (sq. ft.)
6. If you must provide outdoor air to the boiler
room, the top of the permanent opening
into the boiler room must be within 12” of
the ceiling, and the free area of the opening
(sq. in.) must be no less than the Combined
Appliance Input (from Step 2) divided by
3000 BTU/hr/sq. in.
2. Add up the input rates of all the combustion
appliances installed in the same floorspace.
combined appliance
___________ input (BTU/hr)
3. In the table below, find the Minimum
Allowable Floorspace based on the
Combined Input Rate from Step 2 and the
ceiling height. If the Combined Input Rate
is between two rates, use the next highest
rate.
combined appliance
__________ input (Step 2)
÷
3000 BTU/hr/sq. in.
Minimum Opening Size
minimum allowable
___________ floorspace (sq. ft.)
_____ (sq. in.)
7. Duct this opening vertically or horizontally
directly to the outdoors, or directly to a
space that communicates directly with the
outdoors, such as an attic or crawlspace.
Minimum Allowable Floorspace in the Boiler Room
and Freely Connected Rooms (sq. ft.)
Ceiling Height
7’
8’
9’
10’
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
357
714
313
625
278
556
833
250
500
750
Combined
Appliance
1071
1429
1786
2143
2500
2857
938
For more details and options, refer to your local
building code, the National Fuel Gas Code (NFPA
54 and ANSI Z223), and the Canadian Natural Gas
Installation Code CAN/CGA-B149.1 or Propane
Installation Code CAN/CGA-B149.2.
1250
1563
1875
2188
2500
1111 1000
1389 1250
1667 1500
1944 1750
2222 2000
Input Rate
(see Step 2)
(BTU/hr)
32
APPeNDIX B – VeNtING
VENT THIS BOILER according to the instructions. Failure to do so may cause products of
combustion to enter the building resulting in severe property damage, personal injury or death.
Install this boiler according to this manual and the National Fuel Gas Code, ANSI Z223.1/NFPA 54,
the Natural Gas and Propane Installation Code, CAN/CSA B149.1, or applicable provisions of the
local building codes. Contact local building or fire officials about restrictions and installation
i
inspection in your area.
If you are removing an existing boiler from a gas
vent or chimney that is also used to vent other gas
appliances:
4. Check the draft of each remaining
appliance using the procedure described
in Appendix G, checking draft and
combustion.
1. Seal any unused openings in the
common venting system.
5. Correct any draft problems before
placing the gas appliances back into
service.
2. Visually inspect the venting system
for proper size and horizontal pitch
and determine there is no blockage or
restriction, leakage, corrosion, and other
deficiencies which could cause an
unsafe condition.
In addition to previously mentioned vent
codes of the main general guidelines,
atmospheric vented installations must
i
also be in accordance with the Standard for
Chimneys, Fireplaces, Vents and Solid Fuel
Burning Appliances, ANSI/NFPA 211. For Canada
installations, refer to the Natural Gas and LP
Installation Code, CAN/CSA- B149.1.
3. Resize the common venting system
to approach the minimum size as
determined using the National Fuel Gas
Code, ANSI Z223.1 and/or CAN/CSA
B149.1, Installation Codes.
33
APPENDIX B1 – AtMoSPheRIC VeNtING
GeNeRAL WARNINGS foR AtMoSPheRIC VeNtING SYSteMS
USE ATMOSPHERIC VENTING only with
DO NOT REDUCE THE DIAMETER of the vent
connector between the boiler and the chimney.
It must not be smaller than the outlet on the
drafthood, damper, or vent reducer supplied with
the boiler.
boilers approved for atmospheric venting as
noted in the Specifications Section of this
manual.
INSPECT EXISTING CHIMNEY for obstructions
and deterioration and repair or line the chimney
prior to placing the boiler in service.
UNLISTED VENT DAMPERS AND
OBSTRUCTIONS in the vent pipe are prohibited.
UNLINED MASONRY CONSTRUCTION is
prohibited for use as a chimney.
THE VENT DAMPER supplied with the boiler
shall not be used to block the vent of any other
appliance.
FIREPLACES AND FAN-ASSISTED GAS
APPLIANCES must not be vented into the same
chimney space as this boiler.
Install vent and vent connector (Figure B-1). Comply with all design and installation requirements in the
Connect Venting Section of this manual, local code, and the National Fuel Gas Code or Can/CSA B149.1.
Clay flue lined masonry chimneys do not meet the venting requirements for this appliance.
Figure B-1: Typical Atmospheric Vent Installation
34
thIS PAGe INteNtIoNALLY Left BLANK
35
APPENDIX C – GAS PIPING
Table C-3: Specific Gravity Correction Factors For
Natural Gas
ASSURE GAS PIPING IS LEAK FREE
AND OF PROPER SIZE and type for the
connected load.
Specific
Gravity
Correction
Factor
Specific
Gravity
Correction
Factor
SHUT OFF MAIN GAS SUPPLY prior to
installing or servicing boiler gas piping.
0.50
1.10
1.04
1.00
0.96
0.93
0.90
0.87
0.85
0.90
1.00
1.10
1.20
1.30
1.40
0.81
0.82
0.78
0.74
0.71
0.68
0.66
0.55
1. Determine the boiler’s maximum gas
demand and minimum gas supply pressure
(printed on the boiler’s rating label) and the
demand of other gas appliances served by
the same gas meter.
0.60
0.65
0.70
0.75
0.80
2. Ensure that gas piping, fittings, and gas
meter capacities can supply the maximum
gas demand of all appliances at pressures
above their minimum allowable gas
Code, NFPA54/ANSI Z223.1, or size the
system using standard engineering methods
acceptable to authority having jurisdiction.
pressure. Tables C-1 and C-2 provide typical
capacities of gas pipes and fittings.
USE PROPER THREAD COMPONENTS
on all gas connectors.
3. Derate the gas flow through pipes by
multiplying by a correction factor in Table
C-3 based on the specific gravity of the gas.
USE THREAD (JOINT) COMPOUNDS
(pipe dope) rated for liquefied petroleum
gas.
4. For materials or conditions other than those
listed above, refer to the National Fuel Gas
Table C-1: Maximum Capacity of Schedule 40 Pipe in Cubic Feet Per Hour (CFH)*
0.3” w.c. Pressure Drop
0.5” w.c. Pressure Drop
Length
(Feet)
½
132
92
73
63
56
50
46
43
40
38
¾
278
190
152
130
115
105
96
1
1¼
1050
730
590
500
440
400
370
350
320
305
½
175
120
97
¾
1
1¼
1400
950
770
660
580
530
490
460
430
400
10
20
30
40
50
60
70
80
90
100
520
350
285
245
215
195
180
170
160
150
360
250
200
170
151
138
125
118
110
103
680
465
375
320
285
260
240
220
205
195
82
73
66
61
90
57
84
53
79
50
*1 CFH of Natural Gas is approximately equal to 1000 BTU/hr; 1 CFH of LP is approximately equal to 2500 BTU/hr.
Table C-2: Equivalent Lengths (ft) Of Standard Pipe Fittings & Valves
Pipe
Size
Swing
Check
90°
Elbow
45°
Elbow
90° ‘T’, Flow
Through Run
90° ‘T’, Flow
Through Branch
Gate
Globe
Angle
½”
¾”
0
0
1
1
1
19
23
29
39
45
9
4
5
2
2
3
4
5
1
1
1
2
3
1
1
2
2
3
3
4
5
7
8
12
15
20
22
1”
7
1 ¼”
1 ½”
9
11
36
APPeNDIX C – Gas Piping (continued)
(2) When testing at ½ psig or less, isolate
5. Bond all above-ground gas piping to a
grounding electrode and ensure the piping is
electrically continuous.
boiler from gas supply piping by closing
boiler’s individual manual shut-off valve.
(3) Locate leaks using approved
combustible gas detector or
nonflammable, non-corrosive leak
detection solution.
DO NOT USE GAS PIPING AS A
GROUNDING ELECTRODE. Refer to
National Electrical Code, NFPA 70.
6. Install sediment trap, ground-joint union and
manual shut-off valve upstream of boiler gas
control valve and outside jacket.
DO NOT CHECK FOR LEAKS USING
OPEN FLAMES such as matches or
candles or devices that spark.
7. When the piping is completed, test it for
leaks.
8. Repair any detected leaks.
(1) When testing over ½ psig, disconnect
the boiler and its individual shut-off valve
from the gas supply piping.
APPENDIX D – SySTEM PIPING
USE PROPER DESIGN AND INSTALLATION PRACTICES and observe all local codes when
installing system piping. Property damage and injury may result from an improperly piped or
designed heating system.
Boiler damage caused by flawed system design or operation is excluded from our warranty.
i
Training and experience is required to design and install a piping system that will protect the boiler and
provide many years of comfort to the building occupants. Be sure to protect the boiler from the following
problems:
1. Corrosion
(5) Repair leaking pipes, fittings, and vents
to minimize the need to add makeup
water.
(1) Comply with the boiler’s specific
water quality requirements. See the
Specifications Section of this manual.
(2) Pressurize the system above the highest
net positive suction head (NPSH)
required for each circulator and ensure
positive pressure at the uppermost point
in the system.
(6) Do not fill the boiler with softened water
unless makeup water is extremely hard
and it is not possible to eliminate all
system leaks. If filling the boiler with
softened water, test regularly the water
softener regularly to ensure that brine
solution is not entering the boiler’s water
supply.
(3) Maintain a closed boiler system using
heat exchangers to transfer heat to
open systems, such as domestic hot
water systems.
(4) Purge the system completely of
dissolved oxygen by bleeding all
radiators and installing a properly
installed air scoop or air vent.
2. Lime scale
(1) Repair leaking pipes, fittings, and vents
to minimize the need to add makeup
water.
3ꢀ
APPeNDIX D – System Piping (continued)
(2) Comply with the boiler’s specific
water quality requirements. See the
or radiator. Also add a low-water
cutoff when required by local code
requirements.
Specifications Section of this manual.
(3) Comply with the boiler’s specific
requirements for minimum water flow
through the boiler, installing a system
bypass or primary-secondary loop if
necessary to maintain flow through the
boiler when serving small zones.
6. Thermal shock
(1) Do not over-pump. Adhere to the design
flow requirements for each zone.
(2) Install a boiler bypass, system bypass,
or primary-secondary loop when needed
to avoid returning large volumes of cold
water directly to a hot boiler.
3. Overpressure
(1) Install a properly sized expansion tank.
7. Condensation
(2) Do not exceed the boiler’s specific
requirements for maximum allowable
working pressure.
(1) Do not over-pump. Adhere to the design
flow requirements for each zone.
(3) Do not plug or block the relief valve.
(2) Adhere to the boiler’s specific
minimum return water and supply water
temperature requirements. Install a
boiler bypass, system bypass, or
primary-secondary loop when needed to
maintain water temperatures and flows
within the specified limits.
4. Freezing
(1) Run all portions of the system piping
inside a heated space unless the system
is properly protected with an inhibited
antifreeze solution.
(3) Do not allow chilled water to enter the
boiler during the heating cycle, or heated
water to enter chilled water coils during
the cooling cycle.
5. Overheating
(1) Comply with the boiler’s specific
requirement for minimum water flow
through the boiler. See the
8. Dry Fire
Specifications Section of this manual.
Install a low-water cutoff when the boiler
is installed above the level of the lowest
radiator and when required by local code.
(2) Install a low-water cutoff device
whenever the boiler is installed above
the level of the lowest heat emitter
The following system diagrams are intended to provide a minimum level of guidance for a
successful and trouble-free installation of the boiler in common applications. They do not substitute
for proper design, evaluation, and installation by a trained and qualified installer using the proper
tools, techniques, and design expertise. Not all options are available with every boiler.
i
Hot Water Boilers, Non-Condensing
Two or more
zones of
the same
Two or more
zones of
different
Two or
more
boilers?
Indirect Tank?
temperature?
temperatures?
D-W1
D-W2
D-W3 Tankless Coil
See
Diagram
D-W4
D-W5
D-W6
38
APPeNDIX D – System Piping (continued)
Figure D-0: Piping Schematic Symbols
3ꢁ
APPeNDIX D – System Piping (continued)
Figure D-W1: Water Boiler, Series Loop
Figure D-W2: Water Boiler, Two or More Zones
40
APPeNDIX D – System Piping (continued)
Figure D-W3: Water Boiler, Tankless Coil, Two or More Zones
Figure D-W4: Water Boiler, Indirect Water Heater, Two or More Zones
41
APPeNDIX D – System Piping (continued)
Figure D-W5: Water Boiler, Indirect Water Heater
Figure D-W6: Multiple Water Boilers, Indirect Water Heater, Two or More Zones
42
APPENDIX E – FILLING THE SySTEM AND CHECkING FOR LEAkS
fill entire heating system with water and vent air from system. Use the following procedure on a
Series Loop or multi-zoned system installed as per the figure below. Remove air from system when filling.
1. Close full port ball valve located between
vertical hose bib and air scoop in boiler
supply piping (see Appendix D – System
Piping.
11. Open the zone valve or shut-off valve
for the next zone to be purged. Repeat
the previous steps until all zones have
been purged. At completion, open all
zone valves or shut-off valves.
2. Isolate all zones by closing zone valves or
shut-off valves in supply and return of each
zone(s).
12. Close hose bib, continue filling the system
until the pressure gauge reads 12 psi.
Close fill valve.
3. Attach a hose to the vertical hose bib located
prior to the full port ball valve in the system
supply piping.
If make-up water line is equipped
with pressure reducing valve, system
will automatically fill to 12 psi. Follow fill
valve manufacturer’s instructions.
i
Terminate hose in five-gallon bucket at
a suitable floor drain or outdoor area.
i
13. Open isolation valve in boiler supply piping.
4. Starting with one circuit at a time, open zone
valve or shut-off valve in system supply and
return piping.
14. Remove hose from hose bib.
Confirm that the boiler and system have no
water leaks.
5. Open hose bib.
1. Check Rating Label for maximum operating
pressure of this boiler. Never exceed this
pressure during leak test. Do not plug or
change pressure relief valve. Perform visual
inspection for leaks or weeping joints after
initial fill and during boiler warm-up period.
Repair all leaks before placing boiler into
permanent operation.
6. Open fill valve (Make-up water line should
be located directly after full port ball valve in
system supply piping between air scoop and
expansion tank).
7. Allow water to overflow from bucket until
discharge from hose is bubble free for 30
seconds.
8. Close hose bib, continue filling the system
until the pressure gauge reads 12 psi. Close
fill valve.
2. If it is required to perform a long-term
pressure leak test of the hydronic system,
the boiler should first be isolated to avoid
a pressure loss due to the escape of air
trapped in the boiler.
9. Starting with the first convector in the loop,
open air vent to purge air until a steady
stream of water flows into container for
approximately 5 seconds. Proceed to next
convector and repeat procedure until all
convectors in the loop are purged of air
3. To perform a long-term pressure test
including the boiler, all trapped air must
be removed from the boiler and system as
prescribed above. A loss of pressure during
such a test, with no visible leakage, is an
indication that the boiler or system contained
trapped air.
10. Close the opened zone valve or shut-
off valve for the zone being purged of
air.
43
APPENDIX F – ADjUSTING GAS INPUT RATE
Natural Gas Boilers:
1. Turn off gas supply to all appliances other
than gas-fired boiler.
2. Note the rated manifold gas pressure listed
on the boiler’s rating label.
3. Connect Manometer to manifold pressure
tapping on Gas Valve (Figure F-1).
F-2
8. Determine gas flow rate in Cubic Feet
per Hour based on elapsed time for two
revolutions. (Example: 70 Seconds for (2)
Revolutions = 102.8 Cu. Ft.
9. When the clocked time falls between two
table values (Table F-1), add the table
values shown above and below your clocked
reading and divide by 2 (Example: 68
Seconds for (2) Revolutions = (110.7+102.8)
/2 = 106.7 Cu. Ft./Hr.).
F-1
4. Light main burners by adjusting thermostat
to highest setting.
10. Obtain gas-heating value (Btu per cubic
foot) from gas supplier or use nominal
value of 1000 Btu per cubic foot.
5. If required, adjust gas manifold pressure to
the rated setting by turning the gas valves
adjustment screw clockwise to decrease
manifold pressure or counterclockwise to
increase manifold pressure (Figure F-2).
Several turns may be required.
11. Multiply gas flow rate by gas heating value.
(Example: 70 Seconds for (2) Revolutions
= 120.8 Cu. Ft./Hr. X 1027 Btu/Cu. Ft. =
124,061 Btu/ Hr.
12. Compare measured input rate to input rate
stated on rating label.
Do not force the adjustment screw.
DO NOT EXCEED the boiler’s rated gas
input.
6. On models using more than one gas valve,
turn “off” the gas valve not having pilot
13. If input is too high, reduce input rate by
decreasing manifold pressure. Do not
reduce more than 0.3” w.c. Instead, contact
Burnham for an orifice replacement kit.
control and first adjust the gas valve with
pilot control. Then, turn “on” both gas valves
and adjust the gas valve without pilot control.
7. Clock gas meter for at least two (2)
revolutions of the dial typically labeled ½ or
1 cubic foot per revolution on a residential
gas meter.
14. If input is below 98% of Rating Label input,
increase manifold gas pressure no more
than 0.3 inches w.c. If measured rate is still
less than 98% of rated input, replace or re-
drill existing main burner gas orifices:
44
APPeNDIX f – Adjusting Gas Input Rate (continued)
Table F-1: Gas Flow Rate in Cu. Ft. / Hr.
Size of Gas Meter Dial
15. Recheck Main Burner Flame.
16. Return other gas-fired appliances to
previous condition of use.
Seconds for Two
(2) Revolutions
One
Two
One-Half
Cu. Ft.
Cu. Ft.
300.0
276.9
257.1
240.0
211.7
189.4
171.4
156.5
144.0
130.9
120.0
110.7
102.8
90.0
Cu. Ft.
450.0
415.3
385.7
360.0
317.6
284.2
257.1
234.7
216.0
196.3
180.0
166.1
154.2
135.0
120.0
108.0
90.0
LP/Propane Gas Boilers:
24
26
150.0
138.4
128.5
120.0
105.8
94.7
85.7
78.2
72.0
65.4
60.0
55.3
51.4
45.0
40.0
36.0
30.0
25.7
22.5
20.0
18.0
1. Follow the procedure for gas boilers, except:
2. Adjust tank regulator for gas valve inlet
pressure of 13.5 inches w.c. or less, but not
less than 11.5 inches w.c.
28
30
34
38
3. Gas valve has step-opening regulator, which
initially opens to 1.4 to 2.5 inches w.c. and
steps to full pressure after approximately 30
seconds. Check manifold pressure after step
has occurred.
42
46
50
55
Leak test Gas Piping:
60
65
THE BOILER AND ITS GAS
CONNECTIONS must be leak tested and
leak free before placing boiler in operation.
70
80
90
80.0
FOR LEAK TESTING OVER ½ PSIG,
disconnect boiler and its individual shut-
off valve from gas supply piping.
100
120
140
160
180
200
72.0
60.0
51.4
77.1
47.0
67.5
1. For testing at ½ psig or less, isolate boiler
from gas supply piping by closing boiler’s
individual manual shut-off valve.
40.0
60.0
36.0
54.0
2. Check for gas leaks in all piping joints,
valves, and fittings using a non-corrosive
leak detection solution or an electronic leak
detector.
(1) Remove Main Burners per procedure in
Boiler Service instructions in Section (X).
(2) Remove gas orifices. Drill each orifice
one (1) drill size larger (drill size is
stamped on orifice).
3. Repair any leaks.
(3) Reinstall gas orifices and main burner.
Repeat procedure to measure input rate.
45
APPENDIX G – CHECkING DRAFT AND COMBUSTION
CHECK DRAFT (GAS BOILERS WITH DRAFT HOODS)
6. After 5 minutes of main burner operation,
1. Insofar as is practical, close all doors and
windows in the building.
test for spillage at the draft hood relief
opening, using a lighted match, candle,
cigarette, etc.
2. Turn on all appliances not connected to the
same venting system as the boiler being
checked.
7. Repeat this test for each appliance
connected to the common venting system.
3. Turn on all exhaust fans (such as range
hoods and bathroom exhausts) to their
maximum speed. Do not turn on any
summer exhaust fans.
8. If any appliance does not vent properly, per
the above test, make corrections, so that the
installation conforms to the National Fuel
Gas Code, NFPA 54/ANSI Z223.1, and/or
Installation Codes, CAN/CSA B149.1.
4. Close all fireplace dampers.
5. Operate the appliance being checked.
Follow lighting instructions.
9. Return doors, windows, exhaust fans,
fireplace dampers, and any other gas-
burning appliance to their previous condition
of use.
CHECK DRAFT (OIL BOILERS)
4. While the boiler is still firing, use the
manometer to measure the draft at the
pressure tapping.
1. Use a manometer precise to 0.01” water
column.
2. Fire the boiler until the chimney/vent reaches
normal operating temperature.
5. Confirm that the draft measurement matches
the required draft specified for the boiler.
3. Locate the pressure sensing tapping on the
boiler.
6. If the required draft is not present, make any
necessary adjustments and check again.
CHECK COMBUSTION
1. Use a flue gas analyzer that accurately
measures CO2, O2, CO, and flue gas
temperature.
7. For oil boilers, also take a smoke
measurement of the flue gases. Smoke
should not exceed #1.
2. For oil boilers, also use a smoke tester with
smoke test paper.
If CO2, O2, or CO fall outside of the
range specified for the boiler, review the
installation and startup instructions and make
any necessary adjustments to the boiler or
associated venting or piping systems.
3. Operate the boiler at its rated (high fire)
input.
4. With the analyzer, check the CO2 (or O2),
CO and temperature of the flue gases
exiting the boiler.
Note the gross flue gas temperature for
future reference. Significant changes in
flue gas temperature can indicate changes
in the boiler’s operating efficiency.
i
5. For two-stage or modulating boilers, also
check the CO2 (or O2), CO and temperature
of the flue gases at low fire.
6. Confirm that the measured CO2 (or O2)
matches the required CO2 (or O2) specified
for the boiler.
46
APPENDIX H – IQ CONTROL SySTEM
IQ Control System overview
• Ensures adequate heat and supply of
domestic hot water.
The “IQ Control System” consists of an IQ Boiler
Control and an IQ Option Panel with optional “plug
in” cards:
• UL / CSA Listed or Recognized and tested
as part of a complete system.
• Fully integrates both factory and field
installed components, simplifying installation
and troubleshooting.
• Communicate with other EnviraCom™
enabled components to provide a complete
system solution to maximize comfort and
energy efficiency.
• Efficiently operates the entire boiler system
to save energy.
IQ Boiler Control:
The heart of Burnham’s IQ Control System is the
IQ Boiler Control. The IQ Boiler Control replaces
the traditional separate ignition control, primary
boiler aquastat, as well as the fan and circulator
relays.
When the optional Outdoor Air Reset Card is
installed in the IQ Option Panel, the Operating
Setpoint temperature is automatically adjusted
according to the outdoor temperature. For
example, as the outdoor temperature increases
the Operating Setpoint temperature is reduced
from the High Limit Setting to save energy
while improving home comfort. By better
matching boiler heat supply to actual home
heat demand, room air temperatures are more
closely maintained. In addition, when there is
a domestic hot water (DWH) heat request, the
Operating Setpoint temperature is automatically
adjusted to a DHW Setpoint to satisfy the DWH
heating requirements. When the Outdoor
Air Reset Card is not installed the Operating
Setpoint equals High Limit Setting.
The IQ Boiler Control stores two boiler supply
temperature setpoints in its memory; one setpoint
is for the High Limit Setting and the second is for
the Operating Setpoint.
IQ option Panel:
The IQ Option Panel is a standard component
provided along with the IQ Boiler Control. The
IQ Option Panel functions as a “motherboard”
to accept up to three (3) IQ Option Cards and
provides the necessary mechanical connections
(with no screws required), along with the power
and interconnection wiring into the IQ Boiler
System. Only wiring from field-installed sensors
is required. The IQ Option Panel includes a
dedicated digital readout that provides option card
status information, diagnostics and setup functions
when necessary.
The IQ Option Panel works together with the IQ
Boiler Control to provide an easy and convenient
means to “plug-in” additional functionality to a
boiler system.
4ꢀ
APPeNDIX h – IQ Control System (continued)
IQ option Cards:
A variety of IQ Option Cards are
available to enhance the features of
a standard boiler.
For example, if additional safety limits are required,
select Manual or Automatic Reset Aquastat or
Low Water Cutoff IQ Option Cards. Additionally,
if energy savings and improved home comfort is
desired, select an Outdoor Reset IQ Option Card.
outdoor Reset IQ option Card:
The Outdoor Reset IQ Option Card regulates
hydronic heating system heat delivery rate to
match the home heat demand and building heat
loss. This is accomplished by continuously
adjusting the boiler supply water temperature
setpoint based on outside air temperature,
domestic hot water demand and “sleep” or “leave”
period selections, when a Honeywell EnviraCOM
enabled programmable thermostat is connected.
Benefits of the Outdoor Reset Card: Increased
comfort through smooth, continuous, regulated
heat delivery and reduced indoor air temperature
fluctuations.
Energy Savings through:
(1) reducing room overheating
(2) reducing boiler temperature and
(3) increasing combustion efficiency
Refer to the Outdoor Reset IQ Option Card
instructions for additional information.
Aquastat IQ option Card:
The Aquastat IQ Option Card provides electronic
temperature sensing in a UL limit-rated control with
a single sensing probe. The Aquastat IQ Option
Card replaces auxiliary high limits such as the
L4006.
models require user intervention to reset a
temperature condition after the temperature returns
to safe levels.
Listings/Approvals:
• UL353 Limit Controls for both US (UL) and
Canada (CUL)—Component Recognized
The Aquastat IQ Option Cards are available in
automatic or manual reset models. Automatic
reset versions automatically reset when
• UL 1998 Software Safety Standards as a
Class 2 device.
temperature return to safe levels. Manual reset
Low Water Cutoff (LWCo) IQ option Card:
versions automatically reset when water levels
return to safe levels. Manual reset models require
user intervention to reset a low water condition
after water levels return to safe levels. Manual
reset models will not “lock out” upon power loss
provided water still covers the probe when power
returns.
The Low Water Cutoff (LWCO) IQ Option Cards are
advanced devices that detect the absence of water
in the boiler. LWCO IQ Option Cards use patented
signal processing to identify when the probe signal
levels have decreased due to fouling, permitting
extended operation for probe impedances up to
40K Ohms. The LWCO IQ Option Cards function
longer without requiring probe cleaning and can
operate in the presence of foam.
Listings/Approvals:
• UL GUIDE (MBPR2) for Limit Controls per
UL Standard 353 Limit Controls–Component
Fully compliant with CSD-1 requirements for water
level controls.
• UL GUIDE (MBPR8) Controls, Limit Certified
for Canada–Component per CSA Standard
C22.2
The LWCO IQ Option Card is available with
automatic and manual reset. Automatic reset
48
APPeNDIX h – IQ Control System (continued)
IQ Display Kit:
The LCD Display is an easy to use touch screen
type display that allows a technician to monitor
and adjust the IQ Boiler Control and connected IQ
Option Cards.
The LCD Display kit includes a mounting
bracket and wiring harness to allow simple
physical installation and “plug-in” style electrical
connection. This intuitive display reduces
setup and troubleshooting time by providing the
user adjustment and alarm focused “help” and
“information” screens.
enviraCoM thermostats:
Connected thermostats provide a red LED
and display the IQ Boiler Control or IQ
Option Card Error Codes. A home owner
is alerted to a problem even before the
water is cold. When an Outdoor Reset card
is installed, thermostat “leave” or “sleep”
modes are used to shifts the reset curve to
save energy while the home is in a reduced
room temperature mode.
Standard EnviraCOM thermostats provide “heat
demand” to the IQ Boiler Control and alerts the
home owner of a boiler control faults.
4ꢁ
APPeNDIX h – IQ Control System (continued)
System Parts List
Factory Mounted Components
Burnham Part
Number
Item Description
IQ Boiler Control, Vent Damper, 24 Vac Ignition Control, with Prepurge, Continuous Retry, 90 Second Ignition
Trail, Aquastat Limit Control, 130-220 Deg F, 15 Deg F Adjustable Differential, Auto Reset, less Well, less
Sensor, 120 Vac Circulator Control Relay
102289-01
IQ Option Panel with three slots “plug-in” option card slots, suitable for gas or oil fired boiler applications,
accepts a variety of plug-in cards including limit rated cards
102291-01
102411-01
Limit Rated Temperature Sensor, 24 inch length
Optional Components
Burnham Part
Number
Item Description
Outside Reset IQ Option Card, Domestic Hot Water Priority, for use with Option Control Panel, with Outside
Air Temperature Sensor with 60 inch lead, Instructions, Unit Pack. No additional pipe fittings required.
102723-01
102294-01
102439-01
Outdoor Reset IQ Option Card, Domestic Hot Water Priority, for use with IQ Option Panel, less Sensor.
Outdoor Air Temperature Sensor, 12k ohm, 60 inch lead.
LWCO IQ Option Card kit, Hot Water LF Module, Automatic Reset, for use with Option Control Panel, with
¾ inch NPT Probe, Instructions, Unit Pack. Additional pipe fittings are required.
102711-01
102714-01
LWCO IQ Option Card kit, Hot Water LF Module, Manual Reset, for use with Option Control Panel, with ¾ inch
NPT Probe, Instructions, Unit Pack. Additional pipe fittings are required.
102301-01
102302-01
102305-01
LWCO IQ Option Card, Hot Water LF Module, Automatic Reset, for use with IQ Option Panel, less Probe.
LWCO IQ Option Card, Hot Water LF Module, Manual Reset, for use with IQ Option Panel, less Probe.
LWCO ¾ inch NPT Probe.
Aquastat IQ Option Card, 130-220 Deg F, Manual Reset for use with Option Control Panel, Temperature
Sensor with 36 inch lead, Well, Sensor Clip, Instructions, Unit Pack. Additional pipe fittings are required.
102720-01
Aquastat, IQ Option Card, 130-220 Deg F, 15 Deg F Adjustable Differential, Auto Reset, for use with Option
Control Panel, Temperature Sensor with 36 inch lead, Well, Sensor Clip, Instructions, Unit Pack. Additional
pipe fittings are required.
102717-01
102292-01
102293-01
Aquastat IQ Option Card, 130-220 Deg F, Manual Reset for use with IQ Option Panel, less well, Less Sensor.
Aquastat, IQ Option Card, 130-220 Deg F, 15 Deg F Adjustable Differential, Auto Reset, for use with IQ Option
Panel, less Well, less Sensor.
102295-01
102296-01
Limit Rated Temperature Sensor, 36 inch length.
Limit Rated Temperature Sensor, 48 inch length.
IQ LCD Display, Boiler Exterior Mounted, STN Monochrome, White/Red backlight, 5Vdc Power Supply,
RS422 (RS485) Communication, Pure Black Bezel with Gateway, Wire Harness, Mounting Bracket, Logo Plate
and Instructions.
102728-01
IQ LCD Display, Boiler Exterior Mounted, STN Monochrome, White/Red backlight, 5Vdc Power Supply,
RS422 (RS485) Communication, Pure Black Bezel.
102725-01
102495-01
Enviracom/Modbus RS422 Gateway and 5 Vdc Power Supply for Communication Between the IQ Controls
and LCD Display, 24 Vac Power Supply Input.
Additional Information List
Aquastat IQ Option Card Instruction Sheet - part number 102715-01
Outdoor Reset IQ Option Card Instruction Sheet - part number 102721-01
Low Water Cut-off IQ Option Card Instruction Sheet - part number 102709-01
LCD Display Kit - part number 102727-01
50
SERVICE RECORD
DATE
SERVICE PERFORMED
51
For Residential Grade Water and Steam Boilers
Using Cast Iron, Carbon Steel, Cast Aluminum,
Limited Warranty
or Stainless Steel Heat Exchangers
and Parts/Accessories
Subject to the terms and conditions set forth below, U.S. Boiler Company, Inc.
Lancaster, Pennsylvania hereby extends the following limited warranties to the original
owner of a residential grade water or steam boiler or U.S. Boiler Company, Inc. supplied
parts and/or accessories manufactured and shipped on or after July 1, 2008:
d. This warranty cannot be considered as a guarantee of workmanship of an
installer connected with the installation of the U.S. Boiler Company, Inc.
boiler, or as imposing on U.S. Boiler Company, Inc. liability of any nature for
unsatisfactory performance as a result of faulty workmanship in the
installation, which liability is expressly disclaimed.
e. Boilers, parts, or accessories installed outside the 48 contiguous United
States, the State of Alaska and Canada.
f. Damage to the boiler and/or property due to installation or operation of the
boiler that is not in accordance with the boiler installation and operating
instruction manual.
g. Any damage or failure of the boiler resulting from hard water or scale
buildup in the heat exchanger.
h. Any damage caused by improper fuels, fuel additives or contaminated
combustion air that may cause fireside corrosion and/or clogging of the
burner or heat exchanger.
ONE YEAR LIMITED WARRANTY ON RESIDENTIAL GRADE BOILERS
AND PARTS / ACCESSORIES SUPPLIED BY U.S. BOILER COMPANY, INC.
U.S. Boiler Company, Inc. warrants to the original owner that its residential grade
water and steam boilers and parts/accessories comply at the time of manufacture with
recognized hydronic industry standards and requirements then in effect and will be
free of defects in material and workmanship under normal usage for a period of one
year from the date of original installation. If any part of a residential grade boiler or
any part or accessory provided by U.S. Boiler Company, Inc. is found to be defective
in material or workmanship during this one year period, U.S. Boiler Company, Inc.
will, at its option, repair or replace the defective part.
HEAT EXCHANGER WARRANTIES
U.S. Boiler Company, Inc. warrants to the original owner that the heat exchanger of its
residential grade boilers will remain free from defects in material and workmanship
under normal usage for time period specified in the chart below of the original owner at
the original place of installation. If a claim is made under this warranty during the “No
Charge” period from the date of original installation, U.S. Boiler Company, Inc. will, at its
option, repair or replace the heat exchanger. If a claim is made under this warranty after
the expiration of the “No Charge” period from the date of original installation, U.S. Boiler
Company, Inc. will, at its option and upon payment of the pro-rated service charge set
forth below, repair or replace the heat exchanger. The service charge applicable to a
heat exchanger warranty claim is based upon the number of years the heat exchanger
has been in service and will be determined as a percentage of the retail price of the heat
exchanger model involved at the time the warranty claim is made as follows:
i. Any damage resulting from combustion air contaminated with particulate
which cause clogging of the burner or combustion chamber including but
not limited to sheetrock or plasterboard particles, dirt, and dust particulate.
j. Any damage, defects or malfunctions resulting from improper operation,
maintenance, misuse, abuse, accident, negligence including but not limited to
operation with insufficient water flow, improper water level, improper water
chemistry, or damage from freezing.
k. Any damage caused by water side clogging due to dirty systems or
corrosion products from the system.
l. Any damage resulting from natural disaster.
m.Damage or malfunction due to the lack of required maintenance outlined in
the Installation and Operating Manual furnished with the unit.
6. Exclusive Remedy: U.S. Boiler Company, Inc. obligation for any breach of
these warranties is limited to the repair or replacement of its parts in
accordance with the terms and conditions of these warranties.
7. Limitation of Damages: Under no circumstances shall U.S. Boiler Company, Inc.
be liable for incidental, indirect, special or consequential damages of any kind
whatsoever under these warranties, including, but not limited to, injury or damage
to persons or property and damages for loss of use, inconvenience or loss of time.
U.S. Boiler Company, Inc. liability under these warranties shall under no
circumstances exceed the purchase price paid by the owner for the residential
grade boiler involved. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation or exclusion may not
apply to you.
Service Charge as a % of Retail Price
Years in Service 1-5
Cast Iron Water
Cast Iron Steam*
Carbon Steel
6
7
8
9
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25+
No Charge
No Charge
No Charge
No Charge
5
10
15 20 25 30 40 45 50 55 60 65 70 75
100
10
5
15 20 25 30 40 45 50 55 60 65 70 75
100
Cast Aluminum
30 40 50 60 70
No Charge
100
Stainless Steel
30 40 50 60 70
NOTE: If the heat exchanger involved is no longer available due to product obsolescence
or redesign, the value used to establish the retail price will be the published price as
shown in the Burnham Repair Parts Pricing where the heat exchanger last
appeared or the current retail price of the then nearest equivalent heat exchanger.
*MegaSteam Waterside Corrosion Warranty: U.S. Boiler Company, Inc. warrants the
cast iron sections of the MegaSteam boiler to resist Temperature Induced Chloride
Activated Graphitic Corrosion for a period of five years from the date of original
installation. In the event that any cast iron section of a Mega Steam boiler fails due to
this corrosion mechanism during this period, U.S. Boiler Company, Inc. will repair or
replace, at its option, the cast iron section assembly.
8. Limitation of Warranties: These warranties set forth the entire obligation of U.S.
Boiler Company, Inc. with respect to any defect in a residential grade boiler, parts,
or accessories and U.S. Boiler Company, Inc. shall have no express obligations,
responsibilities or liabilities of any kind whatsoever other than those set forth
herein. These warranties are given in lieu of all other express warranties.
LIFETIME NIPPLE LEAKAGE WARRANTY
ALL APPLICABLE IMPLIED WARRANTIES, IF ANY, INCLUDING ANY
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE ARE EXPRESSLY LIMITED IN DURATION TO A PERIOD OF ONE
YEAR EXCEPT THAT IMPLIED WARRANTIES, IF ANY, APPLICABLE TO
THE HEAT EXCHANGER IN A RESIDENTIAL GRADE BOILER SHALL
EXTEND TO THE ORIGINAL OWNER FOR THE TIME SPECIFIED IN THE
HEAT EXCHANGER SECTION SHOWN ABOVE AT THE ORIGINAL PLACE
OF INSTALLATION. SOME STATES DO NOT ALLOW LIMITATION ON HOW
LONG AN IMPLIED WARRANTY LASTS, SO THE ABOVE LIMITATION MAY
NOT APPLY TO YOU.
U.S. Boiler Company, Inc. warrants the cast iron and steel nipples that join the cast iron
boiler sections to be free of defects in material and workmanship for the lifetime of the
original owner at the original place of installation. In the event that such nipples are
found to be defective in material and workmanship during this period, U.S. Boiler
Company, Inc. will repair or replace at its option, the cast iron section assembly.
ADDITIONAL TERMS AND CONDITIONS
1. Applicability: The limited warranties set forth above are extended only to the
original owner at the original place of installation within the United States and
Canada. These warranties are applicable only to boilers, parts, or accessories
designated as residential grade by U.S. Boiler Company, Inc. and installed in a
single or two-family residence and do not apply to commercial grade products.
2. Components Manufactured by Others: Upon expiration of the one year limited
warranty on residential grade boilers, all boiler components manufactured by
others but furnished by U.S. Boiler Company, Inc. (such as oil burner, circulator
and controls) will be subject only to the manufacturer’s warranty, if any.
3. Proper Installation: The warranties extended by U.S. Boiler Company, Inc.
are conditioned upon the installation of the residential grade boiler, parts, and
accessories in strict compliance with U.S. Boiler Co., Inc. installation
instructions. U.S. Boiler Company, Inc. specifically disclaims liability of any
kind caused by or relating to improper installation.
4. Proper Use and Maintenance: The warranties extended by U.S. Boiler Company,
Inc. conditioned upon the use of the residential grade boiler, parts, and
accessories for its intended purposes and its maintenance accordance with U. S.
Boiler Company, Inc. recommendations and hydronics industry standards. For
proper installation, use, and maintenance, see all applicable sections of the
Installation and Operating, and Service Instructions Manual furnished with the unit.
5. This warranty does not cover the following:
PROCEDURE FOR OBTAINING WARRANTY SERVICE
In order to assure prompt warranty service, the owner is requested to complete
and mail the Warranty Card provided with the product or register product online
failure to comply with this request will not void the owner’s rights under these
warranties. Upon discovery of a condition believed to be related to a defect in
material or workmanship covered by these warranties, the owner should notify
the installer, who will in turn notify the distributor. If this action is not possible or
does not produce a prompt response, the owner should write to U.S. Boiler
Company, Inc., C/O Burnham, P.O. Box 3079, Lancaster, PA 17604, giving
full particulars in support of the claim. The owner is required to make available
for inspection by U.S. Boiler Company, Inc. or its representative the parts
claimed to be defective and, if requested by U.S. Boiler Company, Inc. to ship
these parts prepaid to U.S. Boiler Company, Inc. at the above address for
inspection or repair. In addition, the owner agrees to make all reasonable efforts
to settle any disagreement arising in connection with a claim before resorting to
legal remedies in the courts.
THIS WARRANTY GIVES YOU SPECIFIC LEGAL RIGHTS AND YOU MAY
ALSO HAVE OTHER RIGHTS WHICH VARY FROM STATE TO STATE.
a. Expenses for removal or reinstallation. The homeowner will be responsible
for the cost of removing and reinstalling the alleged defective part or its
replacement and all labor and material connected therewith, and
transportation to and from U.S. Boiler Company, Inc.
b. Components that are part of the heating system but were not furnished by
U.S. Boiler Company, Inc. as part of the residential boiler.
c. Improper burner adjustment, control settings, care or maintenance.
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