Quest Engineering CHH-300 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.QuestOnTheJob.com [email protected]
– Read and Save These Instructions –
Specications subject to change without notice.
TS-720
07/12
1
Quest Gas-Fired CHH-300
Warning: If the information in these instructions are not followed exactly, a re or
explosion may result causing property damage, personal injury or death.
- Do NOT store or use gasoline or other ammable vapors and liquids in the vicinity of
this or any other appliance.
- WHAT TO DO IF YOU SMELL GAS
• Do NOT try to light any appliance.
• Do NOT touch any electrical switch; do not use any phone in your building.
• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s
instructions.
• If you cannot reach your gas supplier, call the re department.
- Installation and service must be performed by a qualied installer, service agency or the
gas supplier.
“Should overheating occur or the gas supply fail to shut off, do not turn off or disconnect
the electrical supply to the pump. Instead, shut off the gas supply at a location external to
the appliance.”
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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.22 pg.12) will break the electrical control circuit
and not allow the burner to run or the gas valve to open. 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 ................................5
1.1 Description .....................................................5
1.2 Features ..........................................................6
2. Safety ......................................................................6
2.1 General Safety Guidelines...............................6
2.2 Safety Devices and Clearances .........................7
2.3 Heat Transfer Fluid ..........................................7
3. Specications..........................................................7
3.1 Construction Specications.............................7
3.2 Dimensions & Capacities Chart.......................8
3.3 Propane Burner & Fuel Specications .............8
3.4 Natural Gas Burner & Fuel Specications........9
3.5 Circulation Pump............................................9
3.6 Electrical Requirements for Complete System 1 0
3.7 Gauges & Indicator Lights ............................. 1 1
3.8 Controls & Electrical ..................................... 1 1
3.9 Controls, Switches, & Gauges Identication.. 1 3
4. Setup..................................................................... 14
4.1 Positioning Equipment on the job.................... 1 4
4.2 Hose & Accessory Connections..................... 1 4
4.3 Charging the Fluid System............................. 1 6
4.4 Propane Gas Burner Installation & Setup....... 1 7
4.5 Natural Gas Burner Installation & Setup........ 1 8
5. Operation.............................................................. 1 8
5.1 Startup .......................................................... 1 8
5.2 Shutdown...................................................... 1 9
6. Maintenance ......................................................... 1 9
6.1 Service Instructions and Checks .................... 1 9
6.2 Maintenance Frequency Chart....................... 2 3
7. Troubleshooting .................................................... 2 3
7.1 Fault Determination ...................................... 2 3
7.2 Burner Internal Faults .................................... 2 5
7.3 Electrical Schematics..................................... 2 6
Warranty....................................................... 2 9
Serial No. __________________________________
Purchase Date ______________________________
Dealer’s Name ______________________________
Page

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1. System Description & Features
1.1 Description
• The CHH 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 provides a central source of hot “heat transfer uid” (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 gas-red units can be equipped with either of 2 burners, each dedicated to burn one of the
following:
-Natural Gas.
-Propane Gas.
• Pumping and combustion control are achieved with electrical components. The CHH-300 requires a
120 volt, 20 amp, 3-wire grounding circuit.
• The CHH is designed for consistently-efcient outdoor operation.
2: CHH-300, Burner End1: CHH-300, 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, pump, lters 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.
• Burners approved for use with the system, come with a permanently installed pressure gauge to simplify
adjustment of gas pressure when setting up the burner.
• Door handles and hose connection couplers for the external HTF circuit 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 propane or natural gas, the chance of FIRE or EXPLOSION always exists!
Always follow safe-operating practices and comply with local re and gas 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 by-standers clear from the heater and accessories.

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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.
• 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.
• Do not allow anything to obstruct the “Combustion Air Intake”.
2.3 Heat Transfer Fluid
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” 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.

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• Primary access for operation and service is provided for through hinged, lockable doors at the two ends
of the enclosure.
• Both side panels and both roof panels are fastener-attached for potential removal.
• Then combustion chamber/heat exchange section is fabricated from stainless steel.
• Access for cleaning the chamber is from the burner end with minimal disassembly required. The
procedure consists of removing the burner and inside chamber section.
• 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
3.3 Propane Gas Burner and Fuel Specications (Fig. 3)
• The “Gas Burner” is a power, forced-draft, type with direct spark ignition, manufactured by Riello
Burners.
• A CSA/UL version gas train is factory installed in units equipped for either propane or natural gas. The gas
train works with either burner.
• Two gauges are mounted to pressure-tap ports on the gas train for use in setting the burner and
monitoring performance(Fig. 24) .
Length of Cabinet inches (millimeters) 72 (1829)
Width of Cabinet inches (millimeters) 22 (559)
Height of Cabinet inches (millimeters) 48 (1219)
Height to Top of Rain Cap inches (millimeters) 58 (1473)
Heat Transfer Fluid Capacity US gallons (liters) 20 (76)
Weight: with heat transfer uid pounds (kilograms) 600 (272)
Riello Burner Model Propane 40-G400-LP
Operational Mode single stage
Electrical Characteristics V / A / Hz / Ph 120 / 2.2 / 60 / 1
Orice: factory equipped # 1.5
Diaphragm: factory equipped # C14
Gas Supply Pressure: Minimum “WC (KPa) 8 (1.99)
Gas Supply Pressure: Maximum “WC (KPa) 13 (3.24)
Gas Manifold Pressure ( P): factory set “WC (KPa) 5.0 (1.25)
Heat Setting: factory set # 1
Air Gate Setting: factory set # 3.0
Heat Input B/tu/H (Watts) 250,000 (73,250)
Heat Output: @ 80% net efciency B/tu/H (Watts) 200,000 (58,600)

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3.4 Natural Gas Burner and Fuel Specications (Fig. 3)
• The “gas burner” is a power, forced-draft, type with direct spark ignition, manufactured by Riello Burners.
• A CSA/UL version gas train is factory installed in units equipped for either natural gas or propane. The gas train
works with either burner.
• Two gauges are mounted to pressure-tap ports on the gas train for use in setting the burner and monitoring
performance (Fig. 24).
3.5 Circulation Pump (Fig. 4)
• The HTF circulation pump is a stainless steel, direct drive centrifugal type.
• The pump is located inside the enclosure at the opposite end to the burner and can be accessed through a
hinged lockable door (Fig. 1).
• A panel-mounted pressure gauge is connected to the output side of the HTF pump by means of a 1/8” ID
hydraulic hose and ttings (Fig. 23).
3: Gas Burner, LP or Natural Gas Train
Riello Burner Model Natural Gas 40-G400-NG
Operational Mode single stage
Electrical Characteristics V / A / Hz / Ph 120 / 2.2 / 60 / 1
Orice: factory equipped # 2.2
Diaphragm: factory equipped # C4
Gas Supply Pressure: Minimum “WC (KPa) 7 (1.74)
Gas Supply Pressure: Maximum “WC (KPa) 10.5 (2.61)
Gas Manifold Pressure ( P): factory set “WC (pascals) 3.8 (946)
Heat Setting: factory set # 1
Air Gate Setting: factory set # 3.5
Heat Input B/tu/H (Watts) 300,000 (87.9)
Heat Output: @ 80% net efciency B/tu/H (Watts) 240,000 (70,320)

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3.6 Electrical Requirements for Complete System
Supply Voltage Volts 120
Circuit Amperage Amps 20
Hertz HZ 60
Phase PH single
Control Circuit Voltage Volts 120
Power Inlet - NEMA Twistlock L5-20P
5: Power Inlet Plug
4: Fluid circulation Pump
Goulds Pump Model 1ST1E4C4
Impeller Diameter inches (millimeters) 5.1875 (132)
Motor Horsepower HP (Watts) 1.0 (746)
Voltages pump can run on Volts 120/240
Full Load Amp Rating - Franklin motor Amps 10.4/5.2
- Emerson motor Amps 12.3/6.2
System Design Flow Rate USGPM (liters/sec) 30 (1.89)
System Design Operating Pressure PSI (kilopascals) 35 (241)