Quest Engineering PowerHeat 980 Pro CHH-980 Manual

Installation, Operation and Maintenance Instructions
– Read and Save These Instructions –
Installation, Operation and Maintenance Instructions
4201 Lien Rd. Phone [phone]
Madison, WI 53704 Toll-Free 1-866-413-5214
www.QuestProtect.com [e-mail]
– Read and Save These Instructions –
Specications subject to change without notice.
TS-767
07/12
1
Quest Oil-Fired CHH-980
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This appliance is equipped with a Blocked-Flue shutoff device. If any part of the ue-
gas passageway in the combustion chamber, exhaust pipe or rain cap should become
blocked or adversely restricted, a pressure sensing switch (Fig.27 pg.11) will break the
electrical control circuit and not allow the burner to run. There is a “Manual Reset”
button on this switch that will have to be reset before re-ring can occur. If the burner
fails to start after resetting once, call a qualied service technician to clean the ue
passageways and/or replace the switch. Cleaning instructions can be found in Section
(6.1 G) of the Maintenance section of this manual.

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Table of Contents
1. System Description & Features .............................3
1.1 Description ....................................................3
1.2 Features .........................................................4
2. Safety ...................................................................4
2.1 General Safety Guidelines..............................4
2.2 Safety Devices and Clearances ......................4
2.3 Heat Transfer Fluid .........................................5
3. Specications .......................................................5
3.1 Construction Specications............................5
3.2 Dimensions & Capacities ...............................6
3.3 Oil Burner & Fuel Specications ....................6
3.4 Circulation Pumps..........................................7
3.5 Electrical Requirements for Complete System.8
3.6 Gauges & Indicator Lights ..............................8
3.7 Controls & Electrical ......................................9
3.8 Control, Switches, & Gauges Identication ..10
4. Setup..................................................................12
4.1 Positioning Equipment on the job.................12
4.2 Hose & Accessory Connections....................12
4.3 Filling the Fluid System ................................15
4.4 Eliminating Air from the HTF Circuit ............16
4.5 Normal 2-Pump Mode with Full Load ..........16
4.6 Normal 1-Pump Mode with Light Load ........17
4.7 Pump-assisted Chamber Draining ................17
4.8 Oil Burner Installation and Setup .................18
5. Operation...........................................................18
5.1 Startup .........................................................18
5.2 Shutdown.....................................................19
6. Maintenance ......................................................19
6.1 Service Instructions & Checks ......................19
6.2 Maintenance Frequency Chart......................23
7. Troubleshooting .................................................24
7.1 Fault Determination .....................................24
7.2 Burner Internal Faults ...................................26
7.3 Electrical Schematics....................................27
Warranty ............................................................30
Page
Serial No. _______________________________
Purchase Date ___________________________
Dealer’s Name ___________________________

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1. System Description & Features
1.1 Description
• The CHH-980 is a fuel burning appliance, designed to heat uid “on demand” and provide pumped
circulation of the uid for use in various portable hydronic applications.
• The CHH-980 provides a central source of hot “Heat Transfer Fluid” (HTF) for use with dependent heat
exchangers such as:
-Fan coils for heating and drying of structures.
-Multi-circuit line heat exchange hose or tubing for ground thawing, concrete
curing, snow melting and slab heating.
-Custom hydronic heat exchange accessories and applications.
• The CHH-980 oil-red units are equipped with a burner that will burn either of the following:
-#2 standard grade light heating oil or diesel fuel.
-#1 winter grade light heating oil or diesel fuel.
• Pumping and combustion control are achieved with electrical components. The CHH-980 requires a
120/240 volt, 50 amp, 4-wire grounding circuit.
• The CHH is designed for consistently-efcient outdoor operation.
2: CHH-980, Burner End1: CHH-980, Pump End


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1.2 Features
• All exposed components are made of non-corrosive materials such as stainless steel, brass or
aluminum.
• The “HTF” circuit includes an open, atmospherically-vented expansion tank, which effectively
eliminates the system from pressure vessel classication.
• The control system includes a sequence of status indicator lights which provide a quick function
check and trouble-shooting aid for the operator.
• The combustion chamber/heat exchanger is completely fabricated from stainless steel and is not
susceptible to corrosion. Temperature turn-down for prolonged periods of operation (such as for
concrete curing) will not harm the chamber.
• For security and environmental protection, all valves, controls, burner, pumps and “HTF” tank ller
are either secured behind lockable access doors or are self-lockable.
• Temperature gauges, pressure gauge, system status indicator lights and “HTF” tank level gauge are
visible to the operator even when the system is securely locked down.
• The CSA/UL approved burner comes with a permanently installed pressure gauge to simplify
monitoring of oil pressure when setting up the burner.
• Door handles and hose connection couplers for the external HTF circuits are recessed so as not to
create “snag-points” when moving, shipping or delivering the unit.
2. Safety
2.1 General Safety Guidelines:
CAUTION! This is a fuel burning appliance.
• Some surfaces will become extremely HOT!
• When using oil or diesel fuel, the chance of FIRE always exists! Always follow safe-operating
practices and comply with local re codes.
• Before attempting to setup or operate this equipment, it is imperative that the Operator reads and
understands all the information in this manual.
• Untrained people should not attempt to operate this equipment until they receive proper
instruction.
• Maintain instructional and safety labels. Replace damaged labels.
• Observe all posted warnings and cautions.
• Always wear suitable protective clothing and accessories such as safety glasses, leather gloves,
certied work boots and hard hat when working with or operating this equipment.
• Keep children, pets and all untrained bystanders clear from the heater and accessories.
2.2 Safety Devices and Clearances
• All safety devices must be in place and functioning properly when the equipment is in operation.
• All hydronic heater panels and doors must be kept closed when the system is operating.

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• The ue-gas exhaust pipe and rain-cap requires a minimum of 6” (152 mm) clearance, from any type of
combustible material.
• Clearance from any obstructive objects must be maintained to a minimum of 36” (914 mm) from both
ends of the hydronic heater for service and operating access.
• Do not allow anything to obstruct the “Combustion Air Intakes”.
2.3 Heat Transfer Fluid (HTF)
Precautions and measures to follow when working with “heat transfer uid” (Inhibited aqueous propylene
glycol).
• Ventilation - Good general ventilation should be sufcient for most conditions.
• Respiratory protection - No respiratory protection should be needed.
• Skin protection - For brief contact, no precautions other than clean body-covering clothing should be
needed.
• Use impervious gloves when prolonged or frequently repeated contact should occur.
• Eye protection - Use safety glasses.
First aid measures.
• Eyes - Flush eyes with plenty of water.
• Skin - Wash off in owing water or shower.
• Ingestion - Induce vomiting if large amounts are ingested. Consult medical personnel.
• Inhalation - Remove to fresh air if effects occur. Consult a physician.
• Note to physician - No specic antidote. Supportive care. Treatment based on judgement of the physician
in response to reactions of the patient.
3 Specications
3.1 Construction Specications
• The “CHH-980” includes an aluminum “enviro-containment” base, with fork-lift pockets.
• The exterior enclosure panels are made of stainless steel.
• The framework for the enclosure and the base are built of structural aluminum. A top center hoisting hook
is included.
• Primary access for operation and service is provided for through hinged, lockable doors at the two ends of
the enclosure.
• Side panels and roof panels are fastener-attached for potential removal.
• The combustion chamber/heat-exchange section is fabricated from stainless steel.
• Access for cleaning the chamber is from the burner end with some disassembly required. The procedure
consists of removing the burner and inside chamber section.

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• Temperature turn-down and condensing within the chamber can not harm the chamber.
• The exhaust ue for the burner exits through the roof of the enclosure. The exposed roof ashing is made
from aluminum. The rain cap and ue pipe are made of stainless steel.
3.2 Dimensions and Capacities (Fig. 3)
3.3 Oil Burner and Fuel Specications
• The “Oil Burner” (Fig. 4) is a pressure-atomization type with direct spark ignition manufactured in the
USA by Wayne Combustion Systems.
• #1 or #2 light heating oil or diesel fuel may be used.
• A gauge is connected to a pressure-tap port on the fuel pump of the burner to aid in setting the burner
and monitoring performance.
• A Fuel Filter is mounted to the burner pump inlet port.
• Supply and return fuel lines are equipped with quick couplers for ease of connection to a fuel tank.
4: CHH-980, Oil Burner 5: Oil Pressure Gauge
Length of Cabinet inches (millimeters) 96 (1,829)
Width of Cabinet inches (millimeters) 48 (1,219)
Height of Cabinet inches (millimeters) 70 (1,778)
Height to Top of Rain Cap inches (millimeters) 94 (2,388)
Heat Transfer Fluid Capacity US gallons (liters) 110 (416)
Weight: w/o Heat Transfer Fluid pounds (kilograms) 2,061 (935)
Weight: with Heat Transfer Fluid pounds (kilograms) 2,941 (1,334)

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3.4 Circulation Pumps (2 required): (Fig. 8)
• The HTF circulation pumps are stainless steel, direct drive centrifugal type.
• They are located inside the enclosure at the opposite end to the burner and can be accessed through a pair of
hinged lockable doors (Fig. 1).
• A panel-mounted pressure gauge is connected to the output side of the HTF pump manifold by means of a
1/8” ID hydraulic hose and ttings (Fig. 28).
• See chart (Fig. 7) for specications.
8: Fluid circulation Pumps
CHH-980
Wayne Burner Model FH
Operational Mode ON/OFF
Electrical Characteristics V-A-Hz-Ph 120/11.5/60/1
Nozzle: Delavan Part # 2 required 2.75-60°B
Fuel Pump Pressure PSI (Kpa) 162 (1117)
Fuel Input Rate: factory set USGPH (Liters/Hr) 7.0 (26.5)
Heat Input: based on 140,000 Btu per USG Btu/H (Kw/H) 980,000 (287)
Heat Output: @ 80% net efciency Btu/H (Kw/H) 784,000 (230)
2 Pumps required CHH-980
Goulds Pump Model 1ST1F1B4
Impeller Diameter inches 5.75
Motor Horsepower HP 1.5
Voltage Choice Volts 120/240
Full Load Amp Rating Amps 16.6/8.3
System Design Flow Rate, using 1 pump US GPM 35
System Design Flow Rate, using 2 pumps US GPM 70
System Design Operating Pressure PSI 35 to 45 (Fig. 7)
(Fig. 6)

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3.5 Electrical Requirements for Complete System
3.6 Gauges and Indicator Lights
• A group of gauges, controls, switches and status-indicator lights is located on the UL approved control
panel. This panel is located behind the burner access doors near the top (Fig. 2). These gauges and lights are
visible from the exterior through plexi-glass windows in the access doors.
• A digital gauge (Fig. 17) monitors each of the following
- HTF supply temperature.
- HTF return temperature.
• A digital hour meter (Fig. 12) logs system run-time.
• A series of 6, LED indicator lights (Fig. 18) illuminate in sequence as each of the following scenarios is
proven:
-#1 - 120 volt control power is present - clear lens.
-#2 - HTF level is adequate in reservoir - green lens.
-#3 - High temperature auto control has not interrupted the circuit – green lens.
-#4 - High temperature limit control has not interrupted the circuit – green lens.
-#5 - High pressure limit switch has not interrupted the circuit – green lens.
-#6 - Stat is calling for heat - green lens.
10: Power Inlet Plug
(Fig. 9)
Supply Voltage Volts 120/240
Circuit Amperage Amps 50
Hertz HZ 60
Phase PH single
Control Circuit Voltage Volts 120
Power Inlet - Male NEMA Twistlock CS6375M2

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3.7 Controls and Electrical
• Specic electrical components are located in and on the UL approved dual-electrical panel, above the
burner. The panel also serves as a junction box for cords going to and from remote electrical components
(Fig. 11).
• The following components are mounted on the front of the UL approved panel:
-Hours meter – 120 Volt (Fig. 12).
-Stat - Electronic operating controller (Fig. 13).
-Main power-disconnect (Fig. 14).
-Pump ON/OFF switches (Fig. 15).
-Burner circuit ON/OFF switch (Fig. 16)
-Glycol supply and return temperature gauges (Fig. 17)
-LED lights – 120 Volt (Fig. 18).
The following components are inside the UL approved panel:
-Main system breaker (Fig. 19).
-Pump circuit breakers (Fig. 19).
-Burner circuit breaker (Fig. 19).
-Main power switch body (Fig. 20).
-Temperature gauge transformers 6VDC (Fig. 21).
-Contactors (Fig. 22).
-Terminal blocks (Fig. 23).
The following items are remotely connected to cords that exit from the control panel:
-Burner (Fig. 4). See burner chart above for details(Fig. 6)
-HTF circulating pump (Fig. 8). See pump chart above for details (Fig. 7).
11: Control Panel

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-Main power male inlet-plug (twist lock) (Fig. 10).
-Low water cut-off switch, (mounted on HTF reservoir) (Fig. 24).
-Automatic reset High limit switch, (mounted in HTF plumbing circuit) (Fig. 25).
-Manual reset High limit switch, (mounted in HTF plumbing circuit) (Fig. 26).
-Manual reset High pressure switch (Fig. 27).
3.8 Controls, Switches & Gauges Identication
• Mounted on Control Panel
12: Hour Meter 13: Stat, Digital 14: Main Power
Switch
15: Pump Switches
17: Glycol Temperature Gauges 18: LED Indicator Lights
16: Burner Switch

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• Mounted Inside Control Panel
• Controls Mounted Remotely
• Pump Pressure and Oil Pressure Gauges
19: Circuit Breakers 20: Main Power Switch Body 21: Transformers for Digital Temp. Gauges
22: Contactors 23: Terminal Blocks
24: Low Water Cutoff 25: Auto-reset Temp Limit 26: Man-reset Temp Limit 27: High Pressure Switch
28: Pump Pressure Gauge (PSI) 29: Oil Pressure Gauge (PSI)

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4. Setup
4.1 Positioning Equipment on the Job
Before choosing the location to place the central hydronic heater on a job site, several factors should be
considered.
• If possible, the CHH-980 should be placed at a central position that will minimize and equalize the
lengths of hoses. This helps to ensure maximized and equalized HTF ow.
• Convenient access to a suitable electrical connection, if site power is to be used. 120/240V, 1Ph, 60Hz,
50A, 4-wire grounding is required.
• Convenient access for bulk truck re-fueling.
• Do not locate in the path of job site trafc.
• Avoid locations that will expose the CHH to intense dust or other sources of air contamination. Clean
owing air is essential to maintain clean combustion.
• Observe all requirements listed in the “Instructions for Installation” document provided with this unit.
4.2 Hose and Accessory Connections
In order to make use of the heated uid, it is necessary to lay out a circuit of hoses to; distribute the hot uid,
transfer its heat to another medium and return the cooled uid to the CHH-980 for re-heating (Fig. 30).
• Up to 3, individual, primary, 1” hose circuits can be connected to the CHH-980 quick-connect
couplings (Fig. 31) to feed the same number of manifolds for either multiple fancoils in air heating
situations (Fig. 33) or multiple 5/8” hose circuits for ground thawing, concrete curing, slab heating or
snow melting (Fig. 34).
• Use only “approved hose” as supplied by ThermaStor. Otherwise, compatibility issues may arise.
• Hoses are pre-charged with the recommended mixture of water and propylene glycol (HTF) and are
equipped with hydraulic-style quick couplers. Every hose has a male connector on one end and a
female connector on the other end; therefore any hose can be used for either the supply side or the
return side of the hose circuit.
• Route hoses to achieve minimum chance of damage from trafc of any kind and at the same time
minimize the overall circuit length.
• Provide protection from “Kinking” of hoses that would restrict ow.
• When connecting quick couplers, ensure that the connections are “Fully Engaged” and snapped into
place or ow will not take place through the coupler connection.
• For long term, building heating projects it is advised to insulate all hose sections located outdoors,
between the CHH-980 and the exterior building wall. This also applies for the primary 1” hose circuits
on a thaw or cure job, to reduce uid heat loss between the CHH-980 and the thaw/cure manifold.
Special “Insulating Wraps” are available for this purpose.
• Connect all primary, 1” hoses from the CHH-980 to the distribution manifold(s). Three manifolds can be
connected at once, each to a separate pair of 1” primary hoses.
• Place all fancoils in the desired locations and route all the secondary hose circuits to them OR lay out
all hose grid circuits for ground thaw or concrete curing.
• Connect hoses between the manifold(s) and the fancoils or the thaw/cure loops.

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30: Layout for Fluid Distribution
1. Central Hydronic Heating Unit
2. Burner& Heat Exchanger
3. Circulating Pump
4. Reservoir for Expansion & Filling
5. Primary Fluid Hoses, 1”
6. Secondary Fluid Hoses, 3/4” or 1”
7. Manifold for Multiple Connections
8. Fancoil Heat Exchanger
9. Heat Transfer Coil
10. Air Moving Fan
11. Heated Supply Air
12. Intake Air
13. Hose Grid Line Heat Exchanger 5/8”
14. Vapor Barrier
15. Insulated Tarps

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33: Manifolds for Fancoils - Supply & Return 34: Manifold for Thaw & Cure
35: HTF Level Gauge 37: HTF Circuit Valves, Y-strainers & High Temp. Limits
31: Hoses Connected to CHH-980 32: Fancoils Connected to CHH-980 Unit
36: Vented Filler Cap

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4.3 Filling the Fluid System
• The CHH-980, all hose and all accessories are shipped pre-charged with the “approved blend” of heat
transfer uid (HTF). The required uid is a 50% blend of Inhibited, propylene glycol and de-mineralized
neutral PH (#7) water. (Freeze protection to -29ºF). The HTF provided with a new system and accessories
is marketed as DowFrost. Use of any other product that cannot be proven to be equal in all respects will
void warranty of the system.
• Check the HTF level gauge (Fig. 35). The reservoir should be ⅛ to ¼ full when the system is cold. Add
approved uid, if necessary, at the vented ller cap (Fig. 36), or use the pumping system to draw HTF
from a pail or barrel. If you prefer this method, place the free open end of the ½” suction hose into a
pail or barrel of HTF and position the valves as shown in (Fig. 38). Turn the “Primary Pump Switch” ON
(Fig. 15). Once the HTF rises to the desired level, turn the pump OFF and set the valve arrangement for
normal operating mode (Fig. 40 or 41 below).
38: Filling Tank from Pail or Barrel.

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4.4 Eliminating Air from the HTF Circuit:
• If there is a signicant amount of air in the HTF circuit, adjust the valves as shown in (Fig. 39). Turn the
“Primary Pump Switch” ON (Fig. 15) and let the uid circulate until all the air is eliminated from system.
Air has been purged when steady pressure of 35 to 40 PSI is observed at the glycol pressure gauge (Fig.
28).
• Once all air is eliminated, turn the pump OFF and set the valve arrangement for normal operating mode
(Fig. 40 or 41 below).
• Check the HTF level again and top up if necessary (1/8 to 1/4 full). See step 4.3 above.
4.5 Normal 2-Pump Mode with Full Load:
• If the CHH-980 is connected to a distribution system that will demand most of its capacity in terms of
ow requirements and heat draw, the “Normal 2-pump Mode” should be used.
• Adjust the valves as shown in (Fig. 40). Turn ON the “Primary Pump Switch” and the “Secondary Pump
Switch” (Fig. 15).
39: Rapid Air Removal.
40: Normal Mode with 2 Pump Operation.

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4.6 Normal 1-Pump Mode with Light Load:
• If the CHH-980 is connected to a distribution system that will demand only half or less of its capacity
in terms of ow requirements and heat draw, the “Normal 1-pump Mode” should be used. This will
provide better efciency for the lighter load.
• Adjust the valves as shown in (Fig. 41). Turn ON only the “Primary Pump Switch” (Fig. 15).
• Keep in mind that either pump could be used in this mode but it is imperative that the valve (A or B) for
the pump not being used must be closed to prevent short circuiting of the uid and greatly reduced out-
ow.
4.7 Pump-assisted Chamber Draining:
• If, for any reason, the CHH-980 heat exchanger must be drained, the primary pump can be used to
simplify the draining.
• Locate the 1/2” drainage hose, at the opposite end of the unit, below the burner. Connect this hose to
the short ½” suction hose at valve “D” in (Fig. 42). Garden hose ttings make this connection easy.
OPEN both valves on the 1/2” drainage line below the burner.
• Prepare a short length of 1” hose with a female quick coupler on one end and the other end open.
Connect the female quick coupler to one of the male outlets on the side of the CHH-980. The open end
should be placed in a barrel to catch the uid. It will take more than 100 gallon capacity to hold it all.
• Adjust the valves as shown in (Fig. 42). Turn ON only the “Primary Pump Switch” (Fig. 15).
• When all uid is pumped out, shut OFF the pump switch.
41:Normal Mode with 1 Pump Operation.
42: Pump-assisted Chamber Drain.

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4.8 Oil Burner Installation and Setup: (Fig. 4)
• Refer to the Wayne FH burner Manual (which is included with this package) for detailed information and
instruction.
• Specic burner settings for the CHH-980 are as follows.
5. Operation
5.1 Startup
• Make sure the CHH-980 is connected to a correct, stable power source (120/240V, 50A, 60Hz, 4-wire
Grounding) and proper gauge chords are used (10 gauge minimum).
• Verify adequate and correct fuel supply (#1 or #2 light heating oil or diesel fuel). Refer to the name/
rating plate. Open all valves in the fuel-supply lines.
• With the main power switch (Fig. 14) in the OFF position, open the control panel door on the right (Fig.
11). Turn ON the three breakers (Fig. 19) and then close the panel.
• Turn ON the main power switch (Fig. 14). The white unit power light (Fig. 18) will come on, as well as
the two digital temperature gauges (Fig. 17) and hour meter (Fig. 12).
• Ensure that the HTF circuit valves are positioned for “Normal Single-pump operation” as in article 4.6
above.
• Turn ON only the primary pump switch (Fig. 15) and check the pump pressure gauge (Fig. 28). Steady
pressure around (35 to 45 PSI), indicates that no air remains in the uid circuit. See article 4.4 above for
rapid air removal.
• Once a stable pump pressure is achieved, turn ON the burner switch (Fig. 16). The following sequence
should now occur: Observe the LED light cluster (Fig. 18).
-The glycol level light will turn on (indicating that there is a sufcient amount of HTF in the system).
-The high temp auto light will turn on. (This indicates that the high auto safety switch has not broken
the circuit).
-The high temp limit light will turn on. (This indicates that the high limit safety switches have not
broken the circuit).
-The high pressure limit switch light will turn on. (This indicates that the blocked ue high pressure
safety switch has not broken the circuit).
CHH-980
Wayne Burner Model FH
Operational Mode ON/OFF
Electrical Characteristics V-A-Hz-Ph 120/11.5/60/1
Nozzle: Delavan Part # 2 required 2.75-60°B
Fuel Pump Pressure PSI (Kpa) 162 (1117)
Fuel Input Rate: factory set USGPH (Liters/Hr) 7.0 (26.5)
Heat Input: based on 140,000 Btu per USG Btu/H (Kw/H) 980,000 (287)
Heat Output: @ 80% net efciency Btu/H (Kw/H) 784,000 (230)

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-A few seconds later, the stat light will come on and the burner fan will purge the combustion
chamber for a few seconds.
-The burner should light following the pre-purge. If air is still present in the fuel lines or lter, the
burner may not light and lock out. It might be necessary to reset the burner module 2 or 3 times
until fuel reaches the burner head and ignition takes place.
• Make sure the operator (Fig. 13) is set at the desired temperature. DO NOT Operate at temperatures
above 200ºF, or damage to inline controls and certain accessory components can result. To adjust
setpoint on this control just use the up and down key. There is no need to go into the menu of the
control to perform this function. The control simultaneously displays setpoint temperature and actual
supply uid temperature.
• Once the setpoint temperature has been reached, the burner will cycle off and on as needed.
• At this time you can initiate the “2-pump operating mode” if the system is supporting a load of more
than half its capacity. See article 4.5 above for correct HTF valve positions. OPEN valve “A” for the
secondary pump and turn ON the secondary pump switch. Remember that valves “A” or “B” must be
open only when the corresponding pump is running.
5.2 Shutdown
• Turn OFF the burner switch (Fig. 16). The burner will shut down but the circulation pump will continue
to run.
• It is recommended that the uid be allowed to continue circulating until it has cooled down to 100ºF or
lower.
• Turn OFF both pump switches (Fig. 15). If any fancoils and hoses have been placed at a higher elevation
than the CHH-980, the primary hoses should be immediately disconnected from the CHH-980 (Fig. 31).
This will prevent uid from draining back and overowing at the HTF reservoir vent (Fig. 36).
• Turn OFF the main power switch (Fig. 14).
• Turn OFF manual fuel supply valves.
• If the system is to be de-commissioned, it is now safe to disconnect the power supply and all HTF
circulation hoses, manifolds and accessories.
6. Maintenance
6.1 Service Instructions and Checks
“CAUTION: Label all wires prior to disconnection when servicing controls. Wiring Errors
can cause Improper and Dangerous Operation. Verify proper operation after servicing
A. To achieve and ensure clean combustion from the burner, a “ue-gas analyzer” and “smoke spot
tester” must be used to verify clean combustion. Perform the following checks while the burner is ring.
Must be performed by a trained service technician ONLY. Refer to the Wayne model FH manual for burner
adjustment instructions. These checks should be performed, every time, when putting the system into
operation on a new project and a minimum of once yearly.
a. Before starting the burner, determine that the correct nozzles are in place (Delavan 2.75-60ºB). 2
nozzles are required.

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Quest Oil Fired CHH-980 Installation, Operation and Maintenance Instructions
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b. Fire the burner and ensure that the oil pressure is at 162 PSI. Adjust if necessary.
c. Regulation of combustion air ow is made by adjustment of the manual AIR ADJUSTMENT dial.
Initial suggested setting is (6.0).
d. Final position of the air adjustment plate must be set based on instrument readings of not greater
than 13.0% CO2 and a smoke spot reading of zero. Final readings must be taken with all service-access
doors closed.
B. After placing this unit in operation, the ignition system safety shutoff device must be tested. Must be
performed by a trained service technician ONLY. This check should be performed, every time, when putting
the system into operation on a new project or a minimum of once yearly.
a. Shut OFF the “burner circuit” power switch.
b. Remove the primary control box from the burner and place a small piece of dark tape over the
light-sensing, cad-cell eye that senses the presence of ame in the combustion chamber. Put the primary
control back in place.
c. Turn the power switch back ON and initiate burner lighting procedure. After the short pre-purge
cycle, the burner should light but go out in 5 seconds and lock out. If the burner does not lock out with
the cad-cell eye covered, the primary control should be replaced.
d. To put the unit back in standard operating mode, turn OFF the burner circuit power switch, remove
the tape-cover from the burner’s primary control box, re-insert the control and turn ON the “burner
circuit” power switch.
C. Examine the ue gas exhaust pipe and rain cap to be sure they are solidly attached and free from any
type of obstruction. Clean if necessary.
a. This check should be performed, every time, when putting the system into operation on a new
project or a minimum of once yearly.
D. After placing this unit in operation, the low water safety shutoff device must be tested. Must be
performed by a trained service technician ONLY. The low water cutoff switch is located in plain view at the
same end of the CHH-980 as the circulating pumps and is identied with a label.
a. Push the test switch on the outside of the control. This will simulate a “Low Water” condition and
open the burner circuit to prevent burner initiation.
b. By pushing the reset button, the control will restore function to the burner circuit as long as there is
uid touching the probe. The electronic probe is a “self cleaning” type and should not require service.
c. This control should be tested every time, when putting the system into operation on a new project or
a minimum of once yearly.
E. After placing this unit in operation, the high temperature limit safety shutoff device must be tested. Must
be performed by a trained service technician ONLY. Two high temperature limit switches are located in plain
view at the same end of the CHH-980 as the circulating pumps and are identied with labels. One of these
switches re-sets itself automatically and is set at a slightly lower temperature (about 5ºF) than the other which
must be manually re-set after its set point has been reached.
a. With the burner ring, set the main digital operating stat to a temperature value that is at least 5ºF
higher than the set point of the manual re-set high temperature limit switch.
b. When the uid temperature reaches the set point of the automatic re-set limit switch, it should shut
down the burner. As the uid cools down 2 or 3 degrees, the burner should re-re. This automatic re-set
limit switch should function like a second thermostat and will take over as operator of the burner.