DeDietrich 310 ECO Series User manual

De Dietrich Gas 310/610 ECO Series
www.dedietrichboilers.com
G310E 01 v1.0 04/2010
Installation and
Operating Manual
Gas-Fired Condensing Hot Water Boiler
• Fully modulating (5:1) 20-100%
• Cast Aluminum sectional boiler
• Reduced emissions
• Compact and light weight design
• Broad output range from 63 to 3,911 MBH/18 to 1,146 kW
or more in cascade installations
• Gas 310 ECO - 5 models
• Gas 610 ECO - 4 models
Gas 310 ECO Gas 610 ECO Boiler may
not be exactly as
illustrated.
Boiler may
not be exactly as
illustrated.

1
De Dietrich Gas 310/610 ECO
Warning:
Before you operate this boiler, read this manual carefully and take extra precautions to all safety and warning symbols or important
items. The operating manual is part of the documentation along with the boiler. The installer is required to explain your heating
system and boiler operating instructions.
Notice:
Please read this manual and retain for future reference. Improper installation, adjustment, alteration, service or maintenance can
cause injury, loss of life or property damage. Refer to this manual for assistance or additional information or consult a qualified
installer, service agency or the gas supplier.

In the interest of customers, DE DIETRICH & DDR Americas are continuously endeavoring to make improvements in
product quality.
All the specifications stated in this document are therefore subject to change without notice
important:
This is a category II or IV boiler, only use an
approved type ‘BH’ vent material or equivalent,
consult the venting section in this manual

2
De Dietrich Gas 310/610 ECO
TABLE OF CONTENTS
PREFACE 5
1. SAFETY INSTRUCTIONS 6
1.1 Symbols 6
General Instructions 6
Modifications – Spare parts 6
2. DESCRIPTION OF BOILER 7
3. DESIGN 8
3.1 Boiler version 8
3.2 Operating principle 9
4. TECHNICAL DATA 10
4.1 Dimensions 10
4.2 Technical data 11
4.3 Quotation specifications 16
4.4 Delivery options 16
4.5 Gas 610 Quotation Specification 17
4.6 Delivery and ordering options 17
5. EFFICIENCY INFORMATION 18
5.1 Combustion efficiency 18
5.2 Thermal efficiency 18
5.3 Standby losses 18
6. APPLICATION DATA 18
7. INSTALLATION INSTRUCTIONS 18
7.1 General 18
7.2 Delivery and installation 18
7.3 Flue gas discharge and air supply 21
7.3.1 General 21
7.3.2 Boiler venting types 21
7.3.3 Venting options 21
7.3.4 Vent terminations 21
7.3.5 Combustion air supply requirements 21
7.3.6 Chimney & CLV systems 22
7.3.7 Direct vent or DVS systems 23
7.3.8 Co-venting precautions 24
7.3.9 Vent terminations precautions 25
7.4 INSTALLATION DETAILS 26
7.4.1 Water pressure 26
7.4.2 Condensate discharge 26
7.4.3 Water treatment 26
7.4.4 Safety relief valve 26
7.4.5 Water flow & content 26
7.4.6 Noise pollution 26
7.5 Multiple boiler installation 26
7.6 Typical water system layout 27
8. INSTALLATION INSTRUCTIONS FOR ELECTRICAL INSTALLER 28
8.1 General 28
8.2 Electrical specifications 28
8.2.1 Main power voltage 28
8.2.2 Control unit 28
8.2.3 Power consumption 28
8.2.4 Fuse ratings 29
8.2.5 Temperature control 29
8.2.6 Low water level protection 29
8.2.7 Hi-Limit protection 29
8.2.8 Air pressure differential sensor 29

3
De Dietrich Gas 310/610 ECO
8.3 Connections 30
8.4 Wiring diagram 31
8.5 Sequence of operation 34
8.6 Boiler control 34
8.6.1 Gas 310 Introduction 34
8.6.2 Gas 310 Modulating controls general 35
A. Single boiler 35
B. Multiple boiler 35
8.6.3 BMS Analog control 35
8.6.4 On/Off control 36
8.6.5 High/Low control 36
8.6.6 2-Stage control 37
8.6.7 4-Stage High/low control 37
8.7 Other inputs 37
8.7.1 Shutdown input 37
8.7.2 Lockout input 37
8.7.3 External interlock 37
8.7.4 Other Outputs 38
8.7.5 Analog output 38
8.7.6 Operational signal 38
8.7.7 Common alarm 39
8.7.8 External gas valve 39
8.8 Optional inputs 39
8.8.1 System pressure sensor 39
8.8.2 Gas valve leak proving system 39
8.8.3 Low gas pressure switch 39
8.8.4 Flue gas damper 40
8.8.5 Return butterfly valve 40
8.9 Other connections 40
8.9.1 Boiler or system pump control 40
8.9.2 Frost protection 40
9. GAS INSTALLATION INSTRUCTIONS 41
9.1 Gas connection 41
9.2 Gas pressure 41
9.3 Gas/air ratio control 41
10. COMMISSIONING 42
10.1 Initial lighting 42
10.2 Shutdown 45
11. CONTROL AND SAFETY EQUIPMENT 46
11.1 General 46
11.1.1 Instrument panel layout 46
11.1.2 LED indicators 47
11.2 Switch function key 47
11.2.1 Manual/Automatic operation 47
11.2.2 Forced High mode 47
11.2.3 Forced Low mode 47
11.3 Display of values 48
12. OPEARATING MODE 48
12.1 Operating mode 48
12.2 Read out mode 49
12.3 Control strategy 50
12.4 Shut-off 50
12.4.1 Shut-off 50
12.4.2 Shut-off mode 50
12.5 Counter mode 51
12.5.1 General 51
12.5.2 Reading out counter mode 51
13. SETTING MODE 52
13.1 User level setting mode 52
13.1.1 Flow temperature 52
13.1.2 Pump run on time 53
13.1.3 Boiler control 53
13.2 Setting mode service level 53

4
De Dietrich Gas 310/610 ECO
Table 16 – Service level setting mode 54
13.2.1 Minimum fan speed 55
13.2.2 Maximum fan speed 55
13.2.3 Forced part load time 55
13.2.4 Cycling prevention delay time 55
13.2.5 Required flow temperature 55
13.2.6 Switch point high/low operation 55
13.2.7 Shunt pump post-purge time 55
13.2.8 T from control stops point to start point () 56
13.2.9 Maximum flue gas temperature 56
13.2.10 High limit temperature setting 56
13.2.11 Modulation start point at ∆T 56
13.2.12 Minimum water pressure 56
13.2.13 Adjustments option/accessory 56
13.2.14 Low speed with H/L control 57
13.2.15 Boiler type 57
14. FAULT-FINDING 58
14.1 General 58
14.2 Failure mode 58
14.3 Cooling mode 58
14.4 Summary of failure (lock-out) 59
Table 23 Failure codes 60
15. INSPECTION AND MAINTENANCE 61
15.1 General 61
15.2 Cooling mode 61
15.3 Annual inspection 61
15.4 Maintenance 62
15.4.1 Inspection of air box and dirt trap 62
15.4.2 Non return valve cleaning 62
15.4.3 Venturi cleaning 62
15.4.4 Fan cleaning 63
15.4.5 Heat exchanger cleaning 63
15.4.6 Burner assembly cleaning 63
15.4.7 Condensate collector cleaning 64
15.4.8 Condensate siphon cleaning 64
15.4.9 Ignition/ionization electrode cleaning 64
15.4.10 Gas filter check 65
15.4.11 Inspection glass cleaning 65
15.5 Explode part view 66
15.5.1 Spare parts listing 67
16. APPENDICES 69
16.1 Control menu 70
16.2 shut-off codes 71
17. COMMISSIONING & MAINTANENCE 73
17.1 Boiler commissioning report 73
17.2 Boiler control settings 74
17.3 Routine maintenance checklist 74

5
De Dietrich Gas 310/610 ECO
PREFACE
Read these instructions carefully, before putting the boiler into operation, familiarize your-self with its
control functions, operation and strictly observe the instructions given. Failure to do so may invalidate
warranty or prevent the boiler from operating.
The Installation and commissioning of the boiler needs to be performed by a licensed and trained heating
contractor. A complete commissioning report must be performed, recorded and sent to DDR Americas
Inc. for successfully active the product warranty, the startup report and any service records will be
requested when any warranty claims are made.
If you have any questions or require more information about specific subjects relating to this boiler or its
installation please do not hesitate to contact us.
The data published in these technical instructions is based on the latest information (at date of
publication) and may be subject to revisions.
We reserve all the right to continuous development in both design and manufacture, therefore any
changes to the technology employed may not be retrospective nor may we be obliged to adjust earlier
supplies accordingly.
Fig 01 – Gas 310 ECO 3D. Gas 610 ECO consists of one Gas 310-L (left hand) and one Gas 310-R (right hand).

6
De Dietrich Gas 310/610 ECO
1 SAFETY INSTRUCTIONS
1.1 Symbols
The following symbols are used in this document to emphasize certain instructions. This is in order to
increase your personal safety and to safeguard the technical reliability of the boiler.
Instructions must be followed closely to avoid personal injury or serious damage to the unit or the
environment.

Instructions are of essential importance for the correct functioning of the unit.
Important!!
= Indicates danger of electrical shock. Serious personal injury may occur.

Instructions contain useful information
Read and familiarize yourself with these instructions:
General Instructions
Keep unauthorized personnel away from the boiler. Do not place objects on or against the boiler. Do not
touch hot water connections or the flue outlet when the boiler is operating – burn hazard.
Danger
This boiler is connected to a 120v power supply. An improper installation or attempts to repair electrical
components or controls may result in life threatening situations.
WHAT TO DO IF YOU SMELL GAS:
•Do not smoke and make no fire or sparks;
•Do not operate electrical switches
•Do not use any phone in the building
•Immediately call your gas supplier from another building. If the gas suppler is not available, call
9-1-1
Warning!
Follow the gas supplier’s instructions.
Be aware of flue gas leaks
If you smell flue gas fumes, turn the boiler off and contact your service company or installer.
Beware of water leaks
If you see water leaking from the boiler, turn it off and contact your service company or installer.
Working on the boiler
Installation, commissioning, maintenance and repair work must only be carried out by a licensed and
qualified technician.Designed and engineered in accordance with all relevant national/local standards
and certifications.
Always disconnect the main power supply and close the main gas cock before working on the boiler.
Casing panels should only be removed for maintenance and servicing purposes. Refit all panels on
completion of maintenance or servicing before putting the boiler back into service.
Instructions and warning labels on the boiler must never be removed or covered and must be clearly
legible throughout the entire service life of the boiler. Damaged or illegible instructions and warning labels
must be replaced immediately.
Generally applicable safety instructions related to accident prevention must be consulted in addition to the
information supplied in this technical documentation.
Boiler modification and spare parts

7
De Dietrich Gas 310/610 ECO
The boiler must not be modified or fitted with non OEM spare parts without the express written approval
of DDR Americas Inc. [De Dietrich Boilers].
2 GENERAL DESCRIPTION OF BOILER
The Gas 310/610 ECO boiler is a fully assembled, free standing, gas fired (natural gas only), fully
modulating, high efficiency condensing boiler and is supplied, plastic wrapped, crated on a pallet.
The sectional cast aluminum heat exchanger and other major components are contained within a rigid
steel frame with removable casing parts for maintenance purposes. The Gas 310/610 ECO frame is fitted
with a set of casters to enable the assembled unit to be easily maneuvered into position within the plant
room on site with minimum effort. All major electrical and electronic controls are contained within the
instrument panel mounted on top of the boiler at the opposite end to the connections facing to the front
(long side).
The boiler is available with flow and return connections on the right hand end of the boiler, with the gas
connection on the top of the boiler. The flue gas outlet c/w a condensate connection will be at low level
on the same side as the connections. Combustion air inlet (from room sealed operation) is located at the
top of the boiler. The front or “service side” of the boiler provides access to the heat exchanger
inspection hatch and other service items, see fig. 02 and fig. 04.
The boiler is suitable for room-sealed or open flue applications and has been designed for central heating
and indirect hot water production at working pressures not exceeding 100 psig [6.8 bar]. It must be
installed on a fully pumped system and is designed for operating pressures between 11 – 100 psig [0.8 –
6.8 bar].The boiler is to be used for indoor installations only.
The pre-mix gas burner (NG only) with its gas/air ratio control system ensures clean, trouble free
operation with higher than average efficiencies of up to 99.9% in the condensing mode combined with
ultra low NOx and minimum CO emissions.
The standard control package allows for external On/Off, High Low (volt free switch/s) or modulating
control (0-10V input). The built in digital display shows normal operating/fault code indication and allows
actual and set values to be read and adjusted.
The intelligent, advanced boiler control (‘abc(R)’) continuously monitors the boiler operating conditions,
varying the heat output to suit the system load. The control is able to react to external “negative”
influences in the rest of the system (flow rates, air/gas supply problems) maintaining boiler output for as
long as possible without resorting to a lock out condition. At worst the boiler will reduce its output and/or
shut down (shut off mode) awaiting the “negative” conditions to return to normal before re-starting.
The ‘abc®’ control cannot override the standard flame safety controls.
All Gas 310/610 boilers are fully test fired after assembly to ensure the boiler and controls comply with
our strict quality policy.
The packaged boiler is constructed and approved according to the following standards:
▪ANSI Z21.13 / CSA 4.9
▪UL 795
▪CGA CAN1-3.1
▪ASME Section IV
▪CRN for each Canadian Province
▪Electrical according CSA 22.2 & NEC/NFPA 70
▪Gas Vent Category II & IV – Use vent type BH
▪Consult factory for other certifications or qualifications.

8
De Dietrich Gas 310/610 ECO
3 DESIGN
3.1 Boiler Version
Fig. 02 Cross-section Gas 310 ECO (Left hand boiler illustrated).Gas 610 boiler consists of Gas 310-L and Gas 310-R.
The service side of the boiler (with the heat exchanger inspection cover) is the front.
1. T/P gauge (supply manifold)
2. Relief valve 1 ½ In. & additional ½ In.
port for external Hi limit
3. Flow-connection
4. Not available
5. Return-connection
6. Filling/drain cock
7. Condensate collector
8. Flue gas temperature sensor
9. Condensate drain
10. Measuring point (O2, CO2, CO)
11. Positioning wheels
12. Jacking bolts
13. Condensate drain hose
14. Flue gas discharge
15. Inspection hatch
16. Not available, 10” vent ø system only
17. Heat exchanger
18. Flow temperature sensor
19. Air supply
20. Not available, 10” vent ø system only
21. Air supply grille
22. Gas connection
23. Inspection glass
24. Ignition/Ionization electrode
25. Return temperature sensor
26. Boiler block temperature sensor
27. Frame
28. Steering castor
29. Fan
30. Venturi
31. Gas valve multiblock
32. Non return valve
33. Gas filter
34. Air pressure differential sensor (LDS)
35. Air box
36. Instrument panel
37. Control Keys
38. Read-out window
39. Weather compensator (optional)
40. On/Off switch
Other items see parts view section 15.5:
a. Firing valve (3026)
b. Vent safety switch (3046)
c. Inlet gas adapter 2” NPT (3045)
d. Safety relief valve, see chapter 7.4.4.

9
De Dietrich Gas 310/610 ECO
e. Flue gas damper (optional for Gas 310
boiler, standard for Gas 610 boiler)
3.2 OPERATING PRINCIPLE
Combustion air is drawn into the inlet connection from the plant room (room ventilated version) or from outside via
the eccentric flue system (room sealed) by an air supply fan.
On the inlet side of the fan is a specially designed chamber (venturi unit) which takes gas from the multi-block and
mixes it in the correct proportions with the incoming air. This mixing system ensures that the correct gas/air ratio
is delivered to the pre-mix burner at all times.
Depending on demand (under the dictates of flow/return sensor and other external/internal control inputs) the
‘abc®’ system determines the required boiler output. The ‘abc®’control then varies the speed of the air supply
fan which alters the volume of air being drawn into the venturi, this change in volume is measured using air
pressure differential which directly controls the volume of gas also being delivered to the venturi. The resultant
controlled mixture is delivered to the premix burner.
This mixture is initially ignited by the combined ignition/ionization probe which monitors the state of the flame.
Should the flame be unstable or not ignite within the pre-set safety time cycle the controls will (after 5 attempts)
shut the boiler down requiring manual intervention to reset the boiler. The digital display will indicate a flashing
fault code confirming the reason for the failure.
The products of combustion in the form of hot flue gases are forced through the heat exchanger transferring their
heat to the system water, (the flue gas temperature is reduced to approximately 9-14°F [5-8°C] above the
temperature of the system return water) then discharged via the condensate collector, to the flue gas outlet
connection, to atmosphere.
Because of the low flue gas exit temperature there will be a vapor cloud formed at the flue gas terminal – this is
not smoke -, simply water vapor formed during the combustion process.
If the flue gas temperature falls below dew point 131°F [55°C], water vapor (created during the combustion
process) will begin to condense out in the boiler, transferring its latent heat into the system water, thereby
increasing the output of the boiler with-out increasing the gas consumption.
Condensation formed within the boiler and flue system is discharged from the boiler to an external drain via the
drain pan and siphon supplied.

10
De Dietrich Gas 310/610 ECO
4 TECHINCAL DATA
4.1 Dimensions
fig. 03 Elevation drawings

Flow connection 3 inch ANSI 150# flange
Return connection 2.5 inch
Gas connection 2 inch NPT (BSP to NPT adapter provided)
Condensate drain 1 ¼ inch
Flue gas discharge 10 inch (starter piece may be required, consult vent manufacturer)
Combustion air supply 10 inch (starter piece may be required, consult vent manufacturer)
Dimensions
Gas 310 ECO Model A B D N 0
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
310-5 1590 62 39/64 1312 51 21/32 1600 63 1463 57 39/64 1004 39 17/32
310-6 1590 62 39/64 1312 51 21/32 1600 63 1463 57 39/64 901 35 31/64
310-7 1980 45 61/64 1702 67 1990 78 11/32 1853 72 61/64 1110 43 45/64
310-8
1980
45 61 64
1702
67
1990
78 11/32
1853
72 61/64
1007
39 21/32
310-9 1980 45 61/64 1702 67 1990 78 11/32 1853 72 61/64 904 35 19/32
Unit
C
E
F
G
H
I
J
K
L
M
Inch
23 15/32
23 5/8
14 3/16
12 41/64
55 13/64
40 1/4
14 3/8
12 39/64
17 59/64
55 33/64
mm 596 600 360 321 1402 1022 365 320 455 1410
Unit
P
Q
R
S
T
U
V
Inch 26 25/32 7 7/8 50 51/64 28 23/64 57 3/8 6 45/64 21/64
mm 680 200 1290 720 1457 170 8
table 01, main dimensions, all fractions rounded up

11
De Dietrich Gas 310/610 ECO
4.2 GAS 610 ECO TECHNICAL DATA
Top (plan) view
= P =
= Q =
= R =
A
C
= D =
B



E
F


Back view
Service side view
G
H
I
J
K
L
M
N
O





Heat exchanger
cleanout hatch
Front view

12
De Dietrich Gas 310/610 ECO
Gas 610 ECO Series
MAIN DIMENSIONS
Model A B C D E F
In. mm In. mm In. mm In. mm In. mm In. mm
Gas610-6
40.5 1029 27 685 14.4 365 10.2 258 57.1 1450 50.8 1290
Gas610-7
Gas610-8
Gas610-9
Model G H I J K L
In. mm In. mm In. mm In. mm In. mm In. mm
Gas610-6
22.2 564 6.7 170
57.6 1463 35.5 901
26.8 680 55.2 1402
Gas610-7
72.95 1853
43.7 1110
Gas610-8 39.6 1007
Gas610-9 35.6 904
Model M N O P Q R
In. mm In. mm In. mm In. mm In. mm In. mm
Gas610-6
57.4 1457
51.7 1312 63 1600
9.8 250 28.7 730 28.9 734
Gas610-7
67 1702 78.3 1990
Gas610-8
Gas610-9
Gas 610 ECO Series
Service & Combustible Clearances (MIN)
A* B C
In. mm In. mm In. mm
12 300 12 300 31.5 800
A
B
C
C

13
De Dietrich Gas 310/610 ECO
Gas 610 ECO Series
Base & leveling legs dimensions
Model A B C D E F2 (Square)
In. mm In. mm In. mm In. mm In. mm In. mm
Gas610-6
57.08 1450 24.8 630 4.1 104
1590 62.6 44 1118
2.16 55
Gas610-7
1980 78 59.4 1508
Gas610-8
Gas610-9
Gas 610 ECO Series
Service & Combustible Clearances (MIN)
A* B C D
In. mm In. mm In. mm In. mm
12 300 12 300 31.5 800 24 600
A
D
C
A
C

14
De Dietrich Gas 310/610 ECO
310-5 310-6 310-7 310-8 310-9
Firing Sequence Operation
Minimum Fuel Input MBH [kW] 205 [60] 256 [75] 311 [91] 358 [105] 413 [121]
Maximum Fuel Input MBH [kW] 1,017 [298] 1,269 [372] 1,529 [448] 1,785 [523] 2,041 [598]
Minimum Heat Output MBH [kW] 191 [56] 242 [71] 287 [84] 334 [98] 386 [113]
Maximum Heat Output MBH [kW] 962 [282] 1,205 [353] 1,457 [427] 1,703 [499] 1,955 [573]
Combustion [Gross] %
Thermal Efficiency [Net] %
Standby Losses [Average] %
Gas Type Type
Gas Inlet Connection Size BSP Inch
Gas Inlet Pressure Range
In. w.c. [mbar]
NO
x
emissions [0
2
= 0%] ppm
Residual Fan Duty
In. w.c. [mbar]
Flue-Gas Vent Diameter Inch
Combustion Air Vent Diameter Inch
Flue-Gas Mass Range lb/h [kg/h]
201-999 [91-453] 251-1,246 [114-565] 304-1,499 [138-680] 353-1,748 [160-793] 403-2,000 [183-907]
Maximum Flue Gas Temperature °F [°C]
Condensate Drain Connection inch
Heating Return inch
Heating Supply inch
Maximum Water Temp. Safety Limit °F [°C]
Water Temperature Operating Range °F [°C]
Water Pressure Range psig [barg]
Boiler Water Content [Liters] Gallons 12.9 [49] 15.9 [60] 18.8 [71] 21.7 [82] 24.6 [93]
Water Resistance @ 20°F ΔT [11°C ΔT mbar] Ft. H20 [mbar]
12.5 [374] 12.2 [364] 13.3 [397] 12.2 [364] 13.8 [413]
Water Resistance @ 36°F ΔT [20°C ΔT mbar] Ft. H20 [mbar]
3.78 [113] 3.68 [110] 4.01 [120] 3.68 [110] 4.18 [125]
Main Supply V/P/H
Power Consumption watt 24 - 370 24 - 380 24 - 470 24 - 610 24 - 840
IP-IEC-NEMA Protection Rating
Gas Vent Category Types
Combustion Air Temperature °F [°C]
Installation Altitude Ft. [m]
Dry Boiler Weight lb [kg] 794 [360] 904 [410] 1,014 [460] 1,124 [510] 1,235 [560]
Floor Area
Ft
2
[m
2
]
Noise Level @ 1m [Average] dB(A)
3.0
Other
12.9 [1.2]
15.1 [1.4]
-4 to 104 [-20 to 40]
4,500 [1,370m]
120/60/1 - 15A maximum
Electrical
ANSI Z21.13/CSA 4.9 Gas Vent Category II or IV - Special Venting Type BH Only
IP 20 [NEMA Type 1]
60
10
230 [110]
68 - 194 [20 - 90]
11.6 - 100 [0.8 - 6.89] ASME MAWP 100
1.25
Water
10
149 [65]
2.5
97.2 - [potential up to ≈ 98.5]
Available In: Room air vertical or horizontial venting - Sealed combustion horizonital or vertical venting arrangements
< 35
0.60 [1.50]
Natural Gas Only - LNG consult factory
7 - 14 [17 - 35]
2 inch BSP - Adapter Required 2" M-BSP to 2" M-NPT
< 0.3
De Dietrich Gas 310 ECO
On-Off, 2 Stage or Fully Modulating
Efficiency
Boiler Model
Unit
General
Gas & Venting
CSA Certified Avg. 95.3 - [potential up to ≈ 99.0]
CSA Certified Avg. 97.4 – (potential up to
≅
99.9%)
95.3 – (potential up to ≅99.9%)
Natural Gas Only
126/52
200/93
Flue gas temperature at 104/860F
3.5-14/8.5-35

15
De Dietrich Gas 310/610 ECO
Table 02, Technical data
Flue gas temperature at 104/860F
126/52
CSA Certified Avg. 97.4 – (potential up to ≅99.9%)
95.3 – (potential up to ≅99.9%)
3.5-14/8.5-35

16
De Dietrich Gas 310/610 ECO
4.3 GAS 310 ECO QUOTATION SPECIFICATION:
Fully assembled cast aluminum floor
standing sectional hot water boiler.
Premix burner with stainless steel
cylinder with perforated holes for precise
air-fuel mixture and velocity with a
stainless tube with woven steel fiber for
stable flame and heat insulation.
Fully condensing boiler.
ASME approved design, CRN for each
Canadian Province.
Precise air to fuel ratio through firing
range with high turn down 5:1.
Boiler comes complete with a digital
combination flame safe guard and a
boiler control, with comprehensive
operating, service and fault diagnostic
capabilities.
Firing capabilities, ON-Off, 2-stage or
fully modulating [0-10v].
Capable of receiving BMS control.
Local-remote control [enable/disable].
Boiler control equipment communication
socket for PC or PDA device used with
OEM software for advanced service and
trouble-shooting diagnostics.
A = Control facing short side or (front)
I = Service side (right or left hand
execution)
Available for conventional chimney with
room or direct vent, CLV and sidewall
vented venting systems.
Fully factory pressure and fire tested.
Distinctive powder coasted enamel steel
removable casing.
Rigid steel boiler frame with castors for
easy maneuvering into boiler’s final
position.
Certified by CSA for USA and Canadian
markets.
High combustion and thermal
efficiencies.
No proven water flow requirements.
No minimum temperature requirements.
Manufactured in an ISO 9001 certified
facility.
Max 100 psi - System water operating
pressure
ASME safety relief valve
Pressure & Temperature gauge
Optional communication protocol
gateway (LonWorks®, BACnet®, etc…)
Lead/lag (cascade) system manager for
up to 8 boilers, space heating pump, 2
mixing valve circuits, 2 mixing valve
pumps, DHW pump.
4.4 Delivery & ordering options:
Available in 5 models
Left or right service side option
2 stage or modulating control
Weather compensator control
Condensate neutralization
system with or without pump
Multiple (Cascade) boiler control
DHW production kit
Vent damper [required for co-
venting]
Pressure transducer for system
pressure
Low & High gas pressure switch
Gas valve proofing system
Secondary (CSD-1 compliant) Low water cut-off control
Safety relief valve according to system pressure
Combustion air filter
Cleaning tool
Consult factory DDR Americas Inc. [De Dietrich Boilers] for other available options, all orders must specify
if optional controls are to be installed or shipped loose.

17
De Dietrich Gas 310/610 ECO
4.5 GAS 610 QUOTATION SPECIFICATION:
Fully assembled cast aluminum floor
standing sectional hot water boiler.
Premix burner with stainless steel
cylinder with perforated holes for precise
air-fuel mixture and velocity with a
stainless tube with woven steel fiber for
stable flame and heat insulation.
Fully condensing boiler.
ASME approved design, CRN for each
Canadian Province.
Precise air to fuel ratio through firing
range with high turn down 5:1 per unit.
Boiler comes complete with a digital
combination flame safe guard and a
boiler control, with comprehensive
operating, service and fault diagnostic
capabilities.
Firing capabilities, ON-Off, 2-stage or
fully modulating [0-10v].
Capable of BMS control.
Local-remote control [enable/disable].
Boiler control equipment communication
socket for PC or PDA device used with
OEM software for advanced service and
trouble-shooting diagnostics.
2 control orientation versions, service or
short end option.

Available for conventional chimney,
direct vent and sealed combustion
venting systems.
Fully factory pressure and fire tested.
Distinctive powder coasted enamel steel
removable casing.
Rigid steel boiler frame with castors for
easy maneuvering into boiler’s final
position.
Certified by CSA for USA and Canadian
markets.
High combustion and thermal
efficiencies.
No proven water flow requirements.
No minimum temperature requirements.
Manufactured in an ISO 9001 certified
facility.
Max 100 psi - System water operating
pressure
ASME safety relief valve (x2)
Pressure & Temperature gauge (x2)
Optional communication protocol
gateway (LonWorks®, BACnet®, etc…)
Lead/lag (cascade) system manager for
up to 8 boilers, space heating pump, 2
mixing valve circuits, 2 mixing valve
pumps, DHW pump.
4.6 Delivery & ordering options:
Available in 4 models
2, 4 stage or modulating control
Weather compensator control
Condensate neutralization system with or
without pump
Multiple boiler control
DHW production kit
Standard vent damper
Pressure transducer for system pressure
Low gas pressure switch
High gas pressure switch
pressure switch
Gas valve proofing system
Low water cut-off control (CSD-1 compliant)
Safety relief valve according to system pressure
Combustion air filter
Cleaning tool
Accessories must be ordered in pairs, one for each module.
Consult factory DDR Americas Inc. [De Dietrich Boilers] for other available options, all orders must specify
if optional controls are to be installed or shipped loose.

18
De Dietrich Gas 310/610 ECO
5 EFFICIENCY INFORMATION
5.1 Combustion efficiency
▪Theoretically efficiency up to 99.9% can be achieved with return water temperature of 104°F
[40°C], the combustion efficiency according to ANSI Z21.13b-/CSA 4.9b-2007 average = 95.3%
5.2 Thermal efficiency [heat to water]
▪Average thermal efficiency 97.4%
5.3 Standby losses
▪Less than 0.3% with an average water temperature of 113°F [45°C]
6 APPLICATION DATA
The Gas 310/610 ECO can be used on all new and retrofit projects in both single and multiple
configurations. Conventional and sealed combustion venting system capability means that the boiler can
be sited almost any-where within a building.
External control systems (BMS) can be interfaced with the boiler to provide on/off – high/low or
modulating (0-10 V dc input) firing control options.
7 INSTALLATION INSTRUCTIONS FOR HEATING INSTALLER
7.1 General
All gas appliances must, by law, be installed by competent person (Licensed gas-heating technician)
It is in your own interest and that of safety to ensure that the law is complied with. The following codes
must be adhered to when the De Dietrich Gas 310/610 ECO is installed:
CSA B149 gas installation code & ANSI Z223.1 / NFPA 54 gas code.
In addition to the above regulations, this boiler must be installed in compliance with:
▪National & local building codes
▪ASME CSD-1 as required
▪CSA & NEC electrical codes
▪Other Regulations
Important:
The De Dietrich Gas 310/610 ECO is a CSA certified boiler and must not be modified or installed in any
way contrary to these “Installation and maintenance Instructions.” Manufacturer’s Instructions must NOT
be taken as overriding statutory obligations.
7.2 Delivery and installation
The De Dietrich Gas 310/610 ECO is supplied fully assembled, plastic wrapped and crated on a pallet.
The overall dimensions of the crate are 31.5” [80cm] wide and 68.9” [175 cm] high with the length
dependent on the number of sections (5 & 6 sections: 66.9” [170 cm], 7 to 9 sections: 82.3” [209 cm]).
At the base of the packaging is a 30” [76 cm] wide pallet enabling it to be transported with a pallet truck,
forklift truck or 4-wheel transport boards. Excluding the crate, the boiler is 28.4” [72cm] wide c/w casing
panels and 27 5/8“ [70 cm] without casing and will fit through most standard doors (minimum door
opening width 31.5” [80 cm]. The boiler itself has wheels so that, once the packaging has been removed,
it can easily be moved around on a smooth surface. The packaging lid includes a rocking ramp, which
can be used to negotiate obstacles such as doorsteps and small plinths. Once in position the boiler is
fixed into position using the fitted jacking bolts which both raise the wheels of the ground and level the
boiler. Technical documentation is supplied in a holder on the inside of the boiler casing (beneath the
instrument panel). A number of small loose components, such as the 4 support pads and the siphon for
the boiler have been placed in the flue gas discharge.
The Gas 610 ECO boilers consist of a Gas 310-L and a Gas 310-R. Please refer to page 11 for
details.

19
De Dietrich Gas 310/610 ECO
It is advisable (preferable) to install the Gas 310 ECO as follows:
Place the crate c/w the boiler in the
boiler room. Make sure there is
enough room at one end of the crate
for the boiler and ramp and clearance
for the crate to be removed (at least
10ft [3M]).
Place the 4 support pads under the
adjustment bolts.
Use the adjusting bolts to jack up the
boiler – lifting it clear of the wheels
and with the top of the condensate
collector level.
Fit the siphon assembly.
Use the plastic packaging to protect
the boiler until required for use.
Service side dimension ‘B’, for servicing it is recommended that an
additional 8 inches [200mm] be added, but is not absolutely required.
If the control is orientated to the short end, dimension A will need to
be increased by 19.5 inches [495mm].
At least 16” [400mm] above the boiler

Always transport the boiler in the protective packaging whenever possible.
Important!!
Remove fixing strips, packaging lid and all other packaging, leaving the boiler on the pallet.
Place the packaging lid on the end of the pallet, creating a ramp – secure with screws.
Roll the boiler, on its wheels, off the pallet and down the ramp to the boiler room floor.
WARNING!
Use retaining straps to control the rate of travel – Do Not stand in front of the boiler!
▪Maneuver the boiler to required final position.
The pallet lid can be used as a rocking ramp to
convey the boiler over obstacles, such as thresholds, etc.

The wheels are designed for transport purposes only and
MUST NOT be used when the boiler is in its final position!
Important!!

Additional protection may be required if site conditions
warrant it – overhead builders working, insulation, etc.
Important!!
Important:
unit
Do not install boiler on carpet or other combustible materials. Never stand on the
boiler. The boiler casing is not designed for excessive force or weight.
A
B
C
D
E
inch 12 31.5 6 6 24
mm
300
800
150
150
600
Boiler base dimensions
Boiler
Model A B C D E F G
inch
Mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
inch
mm
310-5
62
39/64 1590
28
23/64 720 2 11/64 55
44
1/64 1118
5
23/32 145 24 13/16 630 1 25/32 45
310-6
310-7
45
61/64 1980 59 3/8 1508
310-8
310-9
table 03[b] - base - foundation dimensions
A
C
B
A
B
A
A
C
C
B
B
AA
E
B
A
B
A
C
C
Single boiler “left hand version” Single boiler “right hand version”
2 boiler “one right & one left” end to end
2 boiler “one right & one left” back to back