New Yorker CG20C Installation & Operating Manual

Brand: New Yorker

Model: CG20C

Type: Installation & Operating Manual

This manual is also suitable for

CG60C

100291-01R7-1/09

BEFORE INSTALLATION: READ THIS MANUAL

SAVE THESE INSTRUCTIONS

Installing contractor and homeowner should read and be informed as to the proper installation and operation of this boiler.

The manufacturer will not be responsible for improper installation or operation. This manual and all associated instruction

material should be conspicuously posted near the boiler.

INSTALLATION, OPERATING

AND

SERVICE INSTRUCTIONS

CG-C™ SERIES

GAS BOILER

Price - $3.00

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Table 1: Dimensional Data

Figure 1: Dimensional Drawing

The following terms are used throughout this manual to bring attention to the presence of hazards of various

risk levels, or to important information concerning product life.

DANGER

Indicates an imminently hazardous situation

which, if not avoided, will result in death, serious

injury or substantial property damage.

CAUTION

Indicates a potentially hazardous situation which,

if not avoided, may result in moderate or minor

injury or property damage.

WARNING

Indicates a potentially hazardous situation which,

if not avoided, could result in death, serious injury

or substantial property damage.

NOTICE

Indicates special instructions on installation,

operation, or maintenance which are important

but not related to personal injury hazards.

Boiler

Size 'A' 'B' 'C' 'D' 'E' 'F' 'G' Recommended

Vent Size [1] Gas

Conn.

(FPT)

Water

Content

(Gallons)

Approx.

Shipping

Weight (LB.)

Round Dia. (in) x Ht. (ft.)

20 20-1/4 10-3/4 6-3/8 4 45-5/8 8-1/2 10** 4" Dia. x 15' 1/2 2.5 212

30 21-1/2 12 6 4 45-3/4 8-1/2 4-3/4 4" Dia. x 15' 1/2 3.2 254

40 24-3/4 15-1/4 7-5/8 5 47-1/8 9-1/8 4-3/4 5" Dia. x 15' 1/2 4.0 298

50 28 18-1/2 9-1/4 6 48-1/2 9-3/4 5-1/4 6" Dia. x 15' 1/2 4.7 346

60 31-1/4 21-3/4 10-7/8 6 48-1/2 9-3/4 5-1/4 6" Dia. x 15' 1/2 5.5 408

70 34-1/2 25 12-1/2 7 50-1/8 10-3/8 6-5/8 7" Dia. x 15' 3/4 6.2 450

80 37-3/4 28-1/4 14-1/8 7 50-1/8 10-3/8 6-5/8 7" Dia. x 15' 3/4 7.0 506

90 41 31-1/2 15-3/4 8 52 11 7-1/4 8" Dia. x 15' 3/4 7.7 550

100 44-1/4 34-3/4 17-3/8 8 52 11 7-1/4 8" Dia. x 15' 3/4 8.5 608

**CG20 only. Dimension 'G' includes allowance for 4" x 3" size reducer furnished with boiler. See Figure 10.

[1] 15' chimney height is from bottom of draft hood opening to top of chimney.

Maximum Allowable Working Pressure (Water only): 30 PSI

Table of Contents

I. Pre-Installation .............................. 3

II. Unpack Boiler ................................5

III. Water Piping and Trim ...................5

IV. Gas Piping .....................................6

V. Venting........................................... 8

VI. Electrical ...................................... 11

VII. System Start-up ............................ 15

EI Trouble Shooting Guide ..........22

VIII. Service .......................................... 23

IX. Repair Parts .................................25

X. Appendix

Low Water Cut Oﬀ .......................43

I. Pre-Installation

WARNING

Carefully read all instructions before installing

boiler. Failure to follow all instructions in proper

order can cause personal injury or death.

A. Inspect shipment carefully for any signs of damage.

All equipment is carefully manufactured, inspected

and packed. Our responsibility ceases upon delivery

of boiler to carrier in good condition. Any claim

for damage or shortage in shipment must be led

immediately against carrier by consignee. No claims

for variances or shortages will be allowed by Boiler

Manufacturer, unless presented within sixty (60) days

after receipt of equipment.

B. Installation must conform to the requirements of the

authority having jurisdiction. In the absence of such

requirements, installation must conform to National

Fuel Gas Code, NFPA 54/ANSI Z223.1 Where required

by the authority having jurisdiction, the installation

must conform to the Standard for Controls and Safety

Devices for Automatically Fired Boilers, ANSI/ASME

CSD-1.

C. Appliance is design certied for installation on

combustible ooring. The boiler must not be installed

on carpeting.

D. Provide clearance between boiler jacket and

combustible material in accordance with local re

ordinance. Refer to Figure 2 for minimum clearance

from combustible material for closet installation. Figure 2: Minimum Clearances to Combustible

Construction for Closet Installation

The New York City Department of Buildings has approved the CG-C Series boiler: Approval No. MEA 40-94-E.

The City of New York requires a Licensed Master Plumber supervise the installation of this product.

The Massachusetts Board of Plumbers and Gas Fitters has approved the CG-C Series Boiler. See the Massachusetts Board of

Plumbers and Gas Fitters website, http://license.reg.state.ma.us/pubLic/pb_pre_form.asp for the latest Approval Code or ask

your local Sales Representative.

The Commonwealth of Massachusetts requires this product to be installed by a licensed Plumber or Gas tter.

For alcove or unconned space installations height

clearance maybe reduced to 27". Subject to boiler and

system piping, left side clearance may be reduced to 1"

if right side clearance is increased to 9".

5. For boiler located in an unconned space in a

building of other than unusually tight construction,

adequate combustion and ventilation air is normally

provided by fresh air inltration through cracks

around windows and doors.

6. For boiler located within unconned space in

building of unusually tight construction or within

conned space, provide outdoor air through two

permanent openings which communicate directly or

by duct with the outdoors or spaces (crawl or attic)

freely communicating with the outdoors. Locate one

opening within 12 inches of top of space. Locate

remaining opening within 12 inches of bottom of

space. Minimum dimension of air opening is 3

inches. Size each opening per following:

a. Direct communication with outdoors. Minimum

free area of 1 square inch per 4,000 Btu per hour

input of all equipment in space.

b. Vertical ducts. Minimum free area of 1 square

inch per 4,000 Btu per hour input of all

equipment in space. Duct cross-sectional area

shall be same as opening free area.

c. Horizontal ducts. Minimum free area of 1

square inch per 2,000 Btu per hour input of all

equipment in space. Duct cross-sectional area

shall be same as opening free area.

Alternate method for boiler located within conned

space. Use indoor air if two permanent openings

communicate directly with additional space(s) of

sufcient volume such that combined volume of all

spaces meet criteria for unconned space. Size each

opening for minimum free area of 1 square inch per

1,000 Btu per hour input of all equipment in spaces,

but not less than 100 square inches.

7. Ventilation Duct Louvers and Grilles. Equip outside

openings with louvers to prevent entrance of rain

and snow, and screens to prevent entrance of insects

and rodents. Louvers and grilles must be xed in

open position or interlocked with equipment to open

automatically before burner operation. Screens must

not be smaller than ¼ inch mesh.

Consider the blocking effect of louvers, grilles and

screens when calculating the opening size to provide

the required free area. If free area of louver or grille

is not known, assume wood louvers have 20-25

percent free area and metal louvers and grilles have

60-75 percent free area.

I. Do not install boiler where gasoline or other

ammable vapors or liquids, or sources of

hydrocarbons (i.e. bleaches, cleaners, chemicals, sprays,

paint removers, fabric softeners, etc.) are used or stored.

E. Provide practical service clearances. A minimum

of 24" from the left side and front jacket panels is

recommended for servicing but may be reduced to

minimums shown in Figure 2. Subject to boiler and

system piping, left side clearance may be reduced to 1"

if right side clearance is increased to 9".

F. Install on level oor. For basement installation provide

concrete base if oor is not level or if water may be

encountered on oor around boiler.

G. Protect gas ignition system components from water

(dripping, spraying, rain, etc.) during boiler operation

and service (circulator replacement, condensate trap,

control replacement, etc.).

H. Provide combustion and ventilation air in accordance

with applicable provisions of local building codes,

or National Fuel Gas Code, NFPA 54/ANSI Z223.1,

Section 5.3, Air for Combustion and Ventilation.

WARNING

Adequate combustion and ventilation air must be

provided to assure proper combustion.

The following guideline is based on the National Fuel

Gas Code, NFPA 54/ANSI Z223.1.

1. Determine volume of space (boiler room). Rooms

communicating directly with space (through

openings not furnished with doors) are considered

part of space.

Volume [ft³] = Length [ft] x Width [ft] x Height [ft]

2. Determine Total Input of all appliances in space.

Round result to nearest 1,000 Btu per hour (Btuh).

3. Determine type of space. Divide Volume by Total

Input.

a. If result is greater than or equal to 50 ft³ per

1,000 Btuh, space is considered an unconned

space.

b. If result is less than 50 ft³ per 1,000 Btuh, space

is considered a conned space.

4. Determine building type. A building of unusually

tight construction has the following characteristics:

a. Walls and ceiling exposed to outside atmosphere

have a continuous water vapor retarder with a

rating of 1 perm or less with openings gasketed

and sealed, and;

b. Weather-stripping has been added on openable

windows and doors, and;

c. Caulking or sealants applied in joints around

window and door frames, between sole

plates and oors, between wall-ceiling joints,

between wall panels, at plumbing and electrical

penetrations, and at other openings.

III. Water Piping and Trim

WARNING

Failure to properly pipe boiler may result in

improper operation and damage to boiler or

building.

A. Design and install boiler and system piping to

prevent oxygen contamination of boiler water.

Oxygen contamination sources are system leaks

requiring addition of makeup water, ttings, and oxygen

Figure 3: Recommended Water Piping for Zone Valve Zoned Heating Systems

permeable materials in distribution system. Eliminate

oxygen contamination by repairing system leaks,

repairing ttings, and using nonpermeable materials in

distribution system.

B. Install circulator with anges, gaskets and bolts

provided. Five foot long circulator harness allows

circulator to be mounted on supply or return. Connect

harness to circulator and secure any excess conduit.

C. Install Safety Relief Valve. See Figure 1. Safety Relief

Valve must be installed with spindle in vertical position.

II. Unpack Boiler

CAUTION

Do not drop boiler. Do not bump boiler jacket

against oor.

A. Move boiler to approximate installed position.

B. Remove all crate fasteners.

C. Lift outside container and remove with all other

inside protective spacers and bracing. Save two of the

wooden slats from the container sleeve for use in Steps

E and F.

D. Remove all boiler hold-down fasteners.

E. Tilt the boiler to one side and slide a wooden slat under

the two raised feet.

F. Tilt the boiler to the other side and slide another

wooden slat under the two raised feet.

G. Slide the boiler forward or backward off the skid using

the two wooden slats as runners.

H. Move boiler to its permanent location.

WARNING

Safety relief valve discharge piping must be piped

near oor to eliminate potential of severe burns.

Do not pipe in any area where freezing could

occur. Do not install any shut-off valves.

D. Connect system supply and return piping to boiler.

Refer to Figure 3. Also consult I=B=R Installation and

Piping Guides. Maintain minimum ½ inch clearance

from hot water piping to combustible materials.

E. Space heating and domestic water heating with the

New Yorker Link SL™ indirect water heater. Install

the New Yorker Link SL™ indirect water heater as a

separate heating zone. Refer to the New Yorker Link

SL™ Indirect Water Heater Installation, Operating and

Service Instructions for additional information.

Figure 4: Recommended Piping for Combination

Heating & Cooling (Refrigeration) Systems

A. Size gas piping. Design system to provide adequate gas

supply to boiler. Consider these factors:

1. Allowable pressure drop from point of delivery to

boiler. Maximum allowable system pressure is ½

psig. Actual point of delivery pressure may be less;

contact gas supplier for additional information.

Minimum gas valve inlet pressure is listed on rating

label.

2. Maximum gas demand. Table 2 lists boiler input

rate. Also consider existing and expected future gas

utilization equipment (i.e. water heater, cooking

equipment).

IV. Gas Piping

Table 2: Rated Input

F. If boiler is used in connection with refrigeration

systems, boiler must be installed with chilled medium

piped in parallel with the heating boiler using

appropriate valves to prevent chilled medium from

entering boiler. See Figure 4. Also consult I=B=R

Installation and Piping Guides.

G. If boiler is connected to heating coils located in

air handling units where they may be exposed to

refrigerated air, boiler piping must be equipped with

ow control valves to prevent gravity circulation of

boiler water during operation of cooling system.

H. Use a boiler bypass if the boiler is to be operated

in a system which has a large volume or excessive

radiation where low boiler water temperatures may be

encountered (i.e. converted gravity circulation system,

etc.).

Remove circulator and install pipe tee between

circulator and boiler return along with second tee in

supply piping as shown in Figure 3. Bypass should be

same size as the supply and return lines with valves

located in bypass and supply outlet as illustrated in

Figure 3 in order to regulate water ow to maintain

higher boiler water temperatures.

Set by-pass and boiler supply valves to half throttle

position to start. Operate boiler until system water

temperature reaches normal operating range.

Adjust valves to provide 180° to 200°F supply water

temperature. Opening the boiler supply valve will raise

system temperature, while opening by-pass valve will

lower system supply temperature.

I. If it is required to perform a long term pressure

test of the hydronic system, the boiler should rst be

isolated to avoid a pressure loss due to the escape of air

trapped in the boiler.

To perform a long term pressure test including the

boiler, ALL trapped air must rst be removed from the

boiler.

A loss of pressure during such a test, with no visible

water leakage, is an indication that the boiler contained

trapped air.

Boiler

Model

Number

Input Rate

[cubic feet per hour] Gas

Connection

Size

Natural Gas LP/Propane

20 37.5 15.0 ½

30 62.0 24.8 ½

40 96.0 38.4 ½

50 130.0 52.0 ½

60 164.0 65.6 ½

70 198.0 79.2 ¾

80 232.0 92.8 ¾

90 266.0 106.4 ¾

100 299.0 119.6 ¾

Table 3: Maximum Capacity of Schedule 40 Pipe in CFH for Natural Gas Pressures of 0.5 psig or Less

4. All above ground gas piping upstream from manual

shut-off valve must be electrically continuous and

bonded to a grounding electrode. Do not use gas

piping as grounding electrode. Refer to National

Electrical Code, ANSI/NFPA 70.

C. Pressure test. The boiler and its gas connection must

be leak tested before placing boiler in operation.

1. Protect boiler gas control valve. For all testing over

½ psig, boiler and its individual shutoff valve must

be disconnected from gas supply piping. For testing

at ½ psig or less, isolate boiler from gas supply

piping by closing boiler's individual manual shutoff

valve.

2. Locate leaks using approved combustible gas

detector, soap and water, or similar nonammable

solution. Do not use matches, candles, open ames,

or other ignition source.

3. Length of piping and number of ttings. Refer to

Table 3 for maximum capacity of Schedule 40 pipe.

Table 4 lists equivalent pipe length for standard

ttings.

4. Specic gravity of gas. Corrections for the specic

gravity of natural gas can be found in Table 5.

For materials or conditions other than those listed

above, refer to National Fuel Gas Code, NFPA

54/ANSI Z223.1, or size system using standard

engineering methods acceptable to authority having

jurisdiction.

B. Connect boiler gas valve to gas supply system.

1. Use methods and materials in accordance with local

plumbing codes and requirements of gas supplier. In

absence of such requirements, follow National Fuel

Gas Code, NFPA 54/ANSI Z223.1.

2. Use thread (joint) compounds (pipe dope) resistant

to action of liqueed petroleum gas.

3. Install sediment trap, ground-joint union and manual

shut-off valve upstream of boiler gas control valve.

See Figure 6 or 7.

Table 4: Fitting Equivalent Lengths Table 5: Specic Gravity Correction Factors for

Natural Gas

Length

[Feet] 0.3 inch w.c. Pressure Drop 0.5 inch w.c. Pressure Drop

½ ¾ 1 1¼ ½ ¾ 1 1¼

10 132 278 520 1,050 175 360 680 1,400

20 92 190 350 730 120 250 465 950

30 73 152 285 590 97 200 375 770

40 63 130 245 500 82 170 320 660

50 56 115 215 440 73 151 285 580

60 50 105 195 400 66 138 260 530

70 46 96 180 370 61 125 240 490

80 43 90 170 350 57 118 220 460

90 40 84 160 320 53 110 205 430

100 38 79 150 305 50 103 195 400

Fitting Nominal Pipe Size

½ ¾ 1 1¼

45° Ell 0.7 1.0 1.2 1.6

90° Ell 1.6 2.1 2.6 3.5

Tee

(As Elbow) 3.1 4.1 5.2 6.9

Specic

Gravity Correction

Factor Specic

Gravity Correction

Factor

0.50 1.10 1.30 1.07

0.55 1.04 1.40 1.04

0.60 1.00 1.50 1.00

0.65 0.96 1.60 0.97

0.70 0.93 1.70 0.94

0.75 0.90

0.80 0.87

Figure 6: Pilot and Gas Piping, Continuous Ignition

(Standing Pilot) Figure 7: Pilot and Gas Piping, Intermittent Ignition

(EI)

V. Venting

A. Install vent system in accordance with local building

codes; or local authority having jurisdiction; or

National Fuel Gas Code, ANSI Z223.1/NFPA 54.

Install any of the following for this Classic CG-C Series

Category I, draft hood equipped appliance:

1. Type B or Type L gas vent. Install in accordance

with listing and manufacturer's instructions.

2. Masonry or metal chimney. Build and install in

accordance with local building codes; or local

authority having jurisdiction; or Standard for

Chimneys, Fireplaces, Vents, and Solid Fuel

Burning Appliances, ANSI/NFPA 211.

Masonry chimney must be lined with approved

clay ue lining or listed chimney lining system

except as provided in ANSI Z223.1/NFPA 54,

Paragraph 7.5.4(a): Exception: Where permitted by

the authority having jurisdiction, existing chimneys

shall be permitted to have their use continued when

an appliance is replaced by an appliance of similar

type, input rating, and efciency.

3. Single wall metal vent. Allowed by ANSI Z223.1/

NFPA 54 under very restrictive conditions.

B. Inspect chimney and remove any obstructions or

restrictions. Clean chimney if previously used for solid

or liquid fuel-burning appliances or replaces.

DANGER

Inspect existing chimney before installing boiler.

Failure to clean or replace perforated pipe or tile

lining will cause severe injury or death.

C. Install Draft Hood without modication on outlet of

ue collector. See Figure 1. Secure with sheet metal

screws.

WARNING

Do not alter boiler draft hood or place any

obstruction or non-approved damper in the

breeching or vent system. Flue gas spillage can

occur. ETL certication will become void.

D. Install Blocked Vent Switch. The Blocked Vent Switch

Assembly shipped taped to top of boiler includes power

cord and switch attached to mounting bracket.

1. Untape Blocked Vent Switch Assembly from top of

boiler. Uncoil power cord.

2. Position mounting bracket onto lower edge of Draft

Hood skirt. Locate center tooth (with #10 sheet

metal screw) on outside and other two teeth inside

Draft Hood skirt. See Figure 8.

3. Slide mounting bracket tight against lower edge of

Draft Hood skirt. Position #10 sheet metal screw

above skirt's stiffening rib.

4. Secure bracket in position by tightening #10 sheet

metal screw against outer surface of Draft Hood

skirt.

5. Verify power cord, mounting bracket and Blocked

Vent Switch are secure and located as shown in

Figure 8.

WARNING

Failure to properly install and use this Blocked

Vent Switch may result in property damage,

personal injury or loss of life.

E. Install Vent Damper. See Figure 9.

1. Open Vent Damper Carton and remove Installation

Instructions. Read Installation Instructions

thoroughly before proceeding.

NOTICE

Please refer to the specications, installation

instructions and troubleshooting guide packed

in the vent damper carton for complete detailed

installation instructions.

2. Vent damper should be same size as draft hood

outlet. See Figure 1. Unpack vent damper carefully

- DO NOT FORCE CLOSED! Forcing vent

damper may damage gear train and void warranty.

Vent damper assembly includes pre-wired

connection harness with polarized plug for use on all

24V standing pilot or EI control systems.

3. Mount vent damper assembly on draft hood without

modication to either. Refer to instructions packed

with vent damper for specic instructions. Vent

damper position indicator to be visible to users.

Figure 8: Blocked Vent Switch Installation

Figure 9: Vent Damper Installation

NOTICE

Provide adequate clearance for servicing.

WARNING

Provide 6" minimum clearance between damper

and combustible construction.

CAUTION

Do not use one vent damper to control two heating

appliances.

F. Install Vent Connector from vent damper to chimney

or gas vent. See Figure 10.

1. Do not connect into same leg of chimney serving an

open replace.

2. Vent connector must not be smaller than vent

damper outlet. Type B is recommended, but single-

wall vent pipe may be used. Arrange venting system

so only the boiler is served by vent damper device.

3. Where two or more appliances vent into a common

vent, the area of the common vent should be at least

equal to the area of the largest vent plus 50% of the

area in the additional vent(s). Do not connect the

vent of this appliance into any portion of mechanical

draft systems operating under positive pressure.

4. Vent connector should have greatest possible initial

rise above vent damper consistent with headroom

available and required clearance from adjacent

combustible building structure.

5. Vent connector should slope upward from vent

damper to chimney or gas vent not less than one

inch in four feet. No portion of vent connector

should run downward or have dips or sags. Vent

connector must be securely supported.

6. Vent connector should be installed above bottom

of chimney to prevent blockage. Inserted into but

not beyond inside wall of chimney liner. Seal tight

between vent connector and chimney.

G. If an Existing Boiler is Removed:

When an existing boiler is removed from a common

venting system, the common venting system is likely

to be too large for proper venting of the appliances

remaining connected to it.

At the time of removal of an existing boiler, the

following steps shall be followed with each appliance

remaining connected to the common venting system

placed in operation, while the other appliances

remaining connected to the common venting system are

not in operation:

a. Seal any unused openings in the common venting

system.

b. Visually inspect the venting system for proper

size and horizontal pitch and determine there is no

blockage or restriction, leakage, corrosion, and other

deciencies which could cause an unsafe condition.

c. Insofar as is practical, close all building doors and

windows and all doors between the space in which

the appliances remaining connected to the common

venting system are located and other spaces of the

building. Turn on clothes dryers and any appliance

not connected to the common venting system.

Turn on any exhaust fans, such as range-hoods and

bathroom exhausts, so they will operate at maximum

speed. Do not operate a summer exhaust fan. Close

replace dampers.

d. Place in operation the appliance being inspected.

Follow the Lighting (or Operating) Instructions.

Adjust thermostat so appliance will operate

continuously.

e. Test for spillage at the draft hood relief opening after

5 minutes of main burner operation. Use the ame

of a match or candle, or smoke from a cigarette,

cigar or pipe.

f. After it has been determined that each appliance

remaining connected to the common venting system

properly vents when tested as outlined above, return

doors, windows, exhaust fans, replace dampers and

any other gas-burning appliance to their previous

condition of use.

g. Any improper operation of the common venting

system should be corrected so the installation

conforms with the National Fuel Gas Code, NFPA

54/ANSI Z223.1. When resizing any portion of

the common venting system, the common venting

system should be resized to approach the minimum

size as determined using the appropriate tables in

Part 11 in the National Fuel Gas Code, NFPA 54/

ANSI Z223.1.

Figure 10: Typical Vent System Installation

A. General. Install wiring and ground boiler in accordance

with requirements of authority having jurisdiction, or

in absence of such requirements the National Electrical

Code, ANSI/NFPA 70.

B. Connect Vent Damper. See Figure 9.

Install the 90° BX connector attached to the exible

conduit in the 7/8" hole on the right side of the jacket.

Plug the factory wired Vent Damper Harness into

polarized receptacle.

C. Install thermostat. Locate on inside wall

approximately 4 feet above oor. Do not install on

outside wall, near replace, or where inuenced by

drafts or restricted air ow, hot or cold water pipes,

lighting xtures, television, or sunlight. Allow free air

movement by avoiding placement of furniture near

thermostat.

D. Wire thermostat. Provide Class II circuit between

thermostat and boiler. Set thermostat heat anticipator

to 0.3 amps. See Figure 12 for continuous ignition

(standing pilot) or Figure 13 for intermittent ignition

(EI).

VI. Electrical

If system tends to overheat above thermostat's

temperature setting, reduce heat anticipator setting by

0.1 or 0.2 amps. If system tends to shortcycle without

reaching desired room temperature, increase heat

anticipator setting by 0.1 or 0.2 amps.

E. New Yorker Link SL™ indirect water heater (if

used). See Figure 12 for continuous ignition (standing

pilot) or Figure 13 for intermittent ignition (EI). Also

refer to the New Yorker Link SL™ Indirect Water

Heater Installation, Operating and Service Instructions.

F. Wire boiler. Boiler is rated for 120 VAC, 60 hertz,

less than 12 amperes. A separate electrical circuit

must be run from the main electrical service with an

over-current device/disconnect in the circuit. A service

switch is recommended and may be required by some

local jurisdictions. Connect to black and white wires

and green ground screw. See Figure 12 for continuous

ignition (standing pilot) or Figure 13 for intermittent

ignition (EI).

G. For installations using zone valves provide separate

transformer for zone valve wiring. Consult zone valve

manufacturer for assistance.

Figure 11: Vent Damper Schematic Wiring Diagram

H. Vent Damper Sequence of Operation. See Figure 11.

1. Vent Damper continuously powered at Terminal 1.

2. Call for heat energizes Vent Damper through

Terminal 5.

3. Vent Damper reaches fully open position. Power is

sent back to Limit through Terminal 2.

4. Call for heat ends. Vent Damper closes.

CAUTION

This boiler contains controls which may cause the

boiler to shut down and not restart without service.

If damage due to frozen pipes is a possibility, the

heating system should not be left unattended

in cold weather; or appropriate safeguards and

alarms should be installed on the heating system

to prevent damage if the boiler is inoperative.

I. Sequence of Operation, Continuous Ignition

(Standing Pilot).

1. Normal Operation

a. Thermostat calls for heat. Vent Damper opens.

b. Gas Valve energized allowing main gas ow and

ignition of Main Burners.

c. Call for heat ends. Gas Valve de-energized,

extinguishing main ame. Vent Damper closes.

2. Safety Shutdown

a. Limit: Automatically interrupts main burner

operation when water temperature exceeds set

point. Maximum allowable temperature is 250°F.

Circulator continues to operate with call for

heat and Vent Damper closes. Normal operation

resumes when water temperature falls below set

point.

b. Blocked Vent Switch. Automatically interrupts

main burner operation when excessive vent

system blockage occurs. Circulator continues

to operate and Vent Damper remains open with

call for heat. If blocked vent switch is activated

do not attempt to place boiler in operation. The

source of blockage must be corrected by trained

and skilled personnel from a qualied service

agency before resetting switch.

c. Flame Roll-out Switch. Automatically interrupts

boiler operation when ames or excessive heat

are present in vestibule. Circulator continues to

operate and Vent Damper remains open with call

for heat. Control is single use device. If ame

roll-out switch is activated do not attempt to

place boiler in operation. The source of blockage

must be corrected and the ame roll-out switch

replaced by trained and skilled personnel from a

qualied service agency.

d. Thermocouple: senses pilot ame and causes gas

valve to turn off main burner and pilot burner

gas ow should pilot burner ame extinguish.

Circulator continues to operate and Vent Damper

remains open with call for heat.

Figure 12: Wiring Diagram, Continuous Ignition (Standing Pilot)

J. Sequence of Operation, Electronic Intermittent

Ignition (EI).

1. Normal Operation

a. Thermostat calls for heat. Vent Damper opens.

b. Ignition Module energized. Pilot Valve opens.

Igniter energized to ignite Pilot Burner.

c. Sensor proves presence of pilot ame. Main

Valve opens and ignites Main Burners.

d. Call for heat ends. Ignition Module is de-

energized. Main Valve and Pilot Valve close,

extinguishing pilot and main burners. Vent

Damper closes.

2. Safety Shutdown

a. Limit: Automatically interrupts main burner

operation when water temperature exceeds set

point. Maximum allowable temperature is 250°F.

Circulator continues to operate with call for

heat and Vent Damper closes. Normal operation

resumes when water temperature falls below set

point.

b. Blocked Vent Switch. Automatically interrupts

main burner operation when excessive vent

system blockage occurs. Circulator continues

to operate and Vent Damper remains open with

call for heat. If blocked vent switch is activated

do not attempt to place boiler in operation. The

source of blockage must be corrected by trained

and skilled personnel from a qualied service

agency before resetting switch.

c. Flame Roll-out Switch. Automatically interrupts

boiler operation when ames or excessive heat

are present in vestibule. Circulator continues to

operate and Vent Damper remains open with call

for heat. Control is single use device. If ame

roll-out switch is activated do not attempt to

place boiler in operation. The source of blockage

must be corrected and the ame roll-out switch

replaced by trained and skilled personnel from a

qualied service agency.

d. Sensor: senses pilot ame and causes ignition

module to turn off main burner and pilot burner

gas ow should pilot burner ame extinguish.

Ignition module will try to relight pilot for

approximately 85 seconds after pilot burner

ame is extinguished. If pilot burner ame

can not be reestablished, Ignition Module will

shutdown.

Five to six minutes after shutdown, Ignition

Module automatically restarts ignition sequence.

Sequence continues until pilot burner ame

is reestablished or call for heat ends. Ignition

Module can be manually reset by adjusting

thermostat to end call for heat for one minute.

Circulator continues to operate and Vent Damper

remains open with call for heat.

For Electronic Ignition Troubleshooting Guide,

see Page 21.

Figure 13: Wiring Diagram, Electronic Intermittent Ignition (EI)

VII. System Start-up

Safe lighting and other performance criteria were met with the gas manifold and control assembly provided on the boiler when

the boiler underwent tests specied in American National Standard for Gas-Fired Low-Pressure Steam and Hot Water Boilers,

ANSI Z21.13.

A. Main Burner Check - Check main burners to see

that they were not dislodged during shipment. Rear

of burners should be in the vertical slots in the rear of

burner tray and the front of the burners should be seated

completely on the orices.

B. Initial start -

1. Fill entire heating system with water and vent

air from system. Use the following procedure on a

Series Loop System equipped with zone valves. (See

Figure 3).

a. Close isolation valve in boiler supply piping.

b. Isolate all circuits by closing zone valves or

balancing valves.

c. Attach a hose to hose bib located just below

isolation valve in boiler supply piping. (Note

- Terminate hose in ve gallon bucket, at a

suitable oor drain, or outdoor area).

d. Starting with one circuit, open zone valve.

e. Open hose bib.

f. Open ll valve (Make-up water line should be

located directly above isolation valve in boiler

supply piping).

g. Allow water to overow from bucket until

discharge from hose is bubble free for 30

seconds.

h. Open zone valve to the second zone to be

purged, then close the rst. Repeat this step until

all zones have been purged, but always have one

zone open. At completion, open all zone valves.

i. Close hose bib, continue lling the system

until the pressure gauge reads 12 psi. Close ll

valve. (Note - If make-up water line is equipped

with pressure reducing valve, system will

automatically ll to 12 psi. Leave globe valve

open).

j. Open isolation valve in boiler supply piping.

k. Remove hose from hose bib.

2. Turn ROOM THERMOSTAT to lowest setting.

3. Be sure that gas to pilot and main burners has been

off for at least ve minutes and vent damper has

been in the open position.

4. Turn "OFF" the electric switch serving boiler.

5. Open valve on main gas line at meter.

6. PURGE AIR FROM GAS PIPING. This procedure

will vary with ignition system furnished but in all

cases adequate ventilation must be provided and

no smoking or open ame permitted.

a. Standing Pilot Models, see Figures 6 and 16.

i. Keep electric switch "OFF".

ii. Open Manual Shut-off Valve upstream of

Combination Gas Valve.

iii. Disconnect Pilot Tubing at gas valve (Purge

must not be into combustion chamber).

iv. Turn Main Gas Knob on Combination Gas

Valve to "Pilot" Position. Depress and hold

in this position until purging is complete.

Turn Main Gas Knob to "off" position.

v. Reconnect pilot tubing and check pipe and

ttings from meter to combination Gas

Valve for leaks using soap solution or other

approved method.

b. Intermittent Ignition Models, see Figures 7 and

17.

i. Turn "ON" electric switch serving boiler.

ii. Open Manual Shut-off Valve upstream of

Combination Gas Valve.

iii. Loosen or remove Inlet Pressure Tap Plug in

Combination Gas Valve and when purging

is complete, tighten or replace plug. (See

Figure 14).

Figure 14: Top View of Honeywell Gas Valves

iv. Check pipe and ttings from meter to

Combination Gas Valve using soap solution

or other approved methods.

CAUTION

v. Test gas piping and connections between

Combination Gas Valve and manifold,

orices, and pilot piping for leaks after

boiler is operating. Use soap solution or

other approved method.

C. Instructions to Put the Boiler in Operation.

1. Electronic Ignition Modules with LED indicators.

Table 6 cross-references the ignition module

terminal designations to the ignition terminal

numbers in the wiring ladder diagrams. The yellow

LED indicates the status of the ame, see Table 7.

The green LED indicates the status of the system,

see Table 8.. See Figure 15 for LED locations.

2. See Figure 16 for Continuous Ignition System

(standing pilot).

Ignition Module

Terminal Designation Wiring Ladder Diagram

Terminal Number

MV 1

MV/PV 2

PV 3

GND 4

24V (GND) 5

24V 6

SPARK 9

Table 6: Ignition Module Terminal Cross-Reference

Table 7: Yellow LED Flame Codes

Yellow LED

Flash CodeaIndicates Recommended

Service Action

Heartbeat Normal Flame Signal N/A

Weak Flame Signal -

System will operate reliably but ame signal is

less than desired.

Note: This indication may ash temporarily

during or shortly after lightoff on some

applications.

Perform routine

maintenance to

assure optimum

ame signal.

Marginal Flame Signal (less than 1.1 µA) -

System may not operate reliably over time.

Service call recommended.

Note: This indication may ash temporarily

during or shortly after lightoff on some

applications.

Check gas supply,

pilot burner, ame

sense wiring, con-

tamination of ame

rod, burner ground

connection.

OFF No Flame or Flame Signal -

below minimum threshold for system operation. N/A

aFlash Code Descriptions

- Heartbeat: Constant ½ second bright, ½ second dim cycles.

- The ash code number signies that the LED ashes X times at 2Hz,

remains off for two seconds, and then repeats sequence.

Figure 15: LED Locations

Green LED

Flash Code

(X + Y)aIndicates Next System Action Recommended Service Action

OFF No “Call for Heat” N/A None

Flash Fast Startup - Flame sense

calibration N/A None

Heartbeat Normal operation N/A None

25 minute Retry Delay-

Pilot ame not detected

during trial for ignition

Initiate new trial for ignition after retry

delay completed.

If system fails to light on next trial

for ignition check gas supply, pilot

burner, spark and ame sense wir-

ing, ame rod contamination or out

of position, burner ground connec-

tion.

3Recycle- Flame failed

during run

Initiate new trial for ignition. Flash

code will remain through the ignition

trial until ame is proved.

If system fails to light on next trial

for ignition check gas supply, pilot

burner, ame sense wiring, ame

rod contamination, burner ground

connection.

4Flame sensed out of

sequence

If situation self corrects within 10

seconds, control returns to normal

sequence. If ame out of sequence re-

mains longer than 10 seconds, control

goes to Flash code 6+4 (see below)

Check for pilot ame. Replace gas

valve if pilot ame present. If no

pilot ame, cycle “Call for Heat.” If

error repeats, replace control.

7Flame sense leakage to

ground

Control remains in wait mode. When

the fault corrects, control resumes nor-

mal operation after a one minute delay.

Check ame sense lead wire for

damage or shorting. Check that

ame rod is in proper position.

Check ame rod ceramic for cracks,

damage or tracking.

8Low secondary voltage

supply- (below 15.5 Vac)

Control remains in wait mode. When

the fault corrects, control resumes nor-

mal operation after one minute delay.

Check transformer and AC line for

proper input voltage to the control.

Check with full system load on the

transformer.

6 + 2 5 minute Retry Delay-

On every third retry on

same “Call for Heat”

Initiate new trial for ignition after retry

delay completed.

Check gas supply, pilot burner, spark

and ame sense wiring, ame rod

contamination or out of position,

burner ground connection.

6 + 3 On every 6th ame

failure during run on the

same “Call for Heat”

5 minute retry delay, then initiate new

trial for ignition.

Check gas supply, pilot burner, ame

sense wiring, contamination of ame

rod, burner ground connection.

6 + 4 Flame sensed out of

sequence- longer than

10 seconds

Control waits until ame is no longer

sensed and then goes to soft lockout.

Flash code continues. Control auto

resets from soft lockout after one hour.

Check for pilot ame. Replace gas

valve if pilot ame present. If no

pilot ame, cycle “Call for Heat.” If

error repeats, replace control.

ON Soft lockout due to error

detected during self

check sequences

Control auto resets from soft lockout

after one hour. Reset by cycling “Call for Heat.” If

error repeats, replace the control

aFlash Code Descriptions:

- Flash Fast: rapid blinking

- Heartbeat: Constant ½ second bright, ½ second dim cycles.

- A single ash code number signies that the LED ashes X times at 2Hz, remains off for two seconds, and then

repeats the sequence.

- X + Y ash codes signify that the LED ashes X times at 2Hz, remains off for two seconds, ashes Y times at 2

Hz, remains off for three seconds, and then repeats the sequence.

Table 8: Green LED Status Codes

Figure 16: Operating Instructions

Figure 17: Lighting Instructions

Figure 18: 40mm Main Burner Flame

D. Check Gas Input to Boiler rst two items in order to utilize the formula

below. The gas meter should then be clocked

for three (3) minutes with stop watch and

substituting the appropriate values in the formula

below, determine what the gas ow should be in

this 3 minute period to give the input shown on

the Rating Label:

Gas Input cu. ft. __________Btuh Input_________

per 3 min. = Heating Value Multiplier from

of Gas X Table 5

(Btu / cu. ft.)

E. Check Main Burner Flame. See Figure 18 or 18a.

Flame should have a clearly dened inner cone with no

yellow tipping. Orange-yellow streaks caused by dust

should not be confused with true yellow tipping.

1. Input Rate and Maximum Inlet Pressure shown on

Rating Label must not be exceeded. Inlet pressure

must not be lower than minimum inlet pressure

shown on Rating Label.

2. All Rate checks and all adjustments are to be made

while boiler is ring - all other appliances connected

to the same meter as the boiler must be off.

3. With boiler off, water Manometer or water

column gauge should be connected to a shut-off

cock installed in the 1/8" outlet pressure tap in

the gas valve (See Figure 14). By installing gas

cock upstream of manometer, gas pressure can be

introduced gradually - without shut-off cock; surge

of pressure when boiler is turned on, could blow

liquid out of manometer. Replace plug in gas valve

when rate check is nished.

4. LP Gas Input:

Adjust Regulator on Gas Valve so that manifold

pressure is 10 inches water column. Turning

Regulator Adjusting Screw Clockwise increases

pressure. Counterclockwise rotation decreases

pressure.

5. Natural Gas Input

a. Approx. Input - Adjust regulator on Gas Valve

so that manifold pressure is three and a half (3½)

inches water column (three inches water column

for high altitude). Turning Regulator Adjusting

Screw Clockwise increases pressure, Counter-

clockwise rotation decreases pressure. If more

accurate check on input is necessary see (b) .

For minor input changes readjust Regulator Gas

Valve to increase or decrease manifold pressure

to obtain corresponding increase manifold

pressure more than 0.3" of water to obtain rated

input, remove orices and drill one size larger.

Reinstall and recheck input rate.

b. Additional Check on Input - Since input is a

function of heating value, specic gravity, and

volume of gas ow contact your utility for the

Figure 18a: 1 Inch Main Burner Flame

NOTICE

CG-C boilers built for installation at altitudes greater

than 2,000 feet above sea level have been specially

oriced to reduce gas input rate 4 percent per 1,000

feet above sea level per the National Fuel Gas Code,

NFPA 54/ANSI Z223.1. High altitude boiler models

are identiable by the third digit in the model number

sufx on the rating label:

CG_OC- _ _ 2: less than 2000 ft. elevation

CG_OC- _ _ 5: 2000 to 5000 ft. elevation

CAUTION

Avoid operating this boiler in an environment

where saw dust, loose insulation bers, dry wall

dust, etc. are present. If boiler is operated under

these conditions, the burner interior and ports

must be cleaned and inspected daily to insure

proper operation.

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New Yorker CG20C Installation & Operating Manual

Brand: New Yorker

Model: CG20C

Type: Installation & Operating Manual

This manual is also suitable for

CG60C

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New Yorker CG20C Installation & Operating Manual

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New Yorker CG20C Installation & Operating Manual

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