Warmboard Warmsource User manual

For use with
Warmsource and Warmsource Flex natural gas boiler
Warmsource and Warmsource Flex propane gas boiler
WARMBOARD COMFORT SYSTEM
0622
Installation Guide

2
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for assistance
GETTING STARTED
Table of Contents
fGetting Started Page 2
fWCS Preparation Page 3
fPlumbing and Mechanical Page 4
fWarmsource Specification Page 5
fWarmsource Preparation Page 7
fWarmsource Installation Page 8
fWarmsource Flex Specification Page 9
fWarmsource Flex Preparation Page 11
fWarmsource Flex Installation Page 12
fFilling and Purging Page 13
fConstruction Mode Page 14
fManifold Cabinet Page 15
fThermostats Page 16
fAir Conditioning Page 17
fTesting the System Page 18
Installation Tips
1The Warmboard Comfort System (WCS) requires
tubing loops to be installed according to our
documentation in order for the system to operate
correctly. DO NOT revise tubing loops or zones
without first consulting Warmboard Inc.
2WCS MUST be installed by a licensed general
contractor, heating professional or plumber.
Failure to use a properly licensed installer, failure to
use the required parts and components and/or any
deviation from these installation guidelines will
void any product warranty.
3WCS uses proprietary, plug-and-play controls
including thermostats, Manifold Controllers and
a Smart Reset Controller. These items CANNOT
be exchanged with alternative products.
4Electrical components require 110 volt wiring.
5All devices communicate via a pre-configured,
wireless network – there’s no need for additional
wiring or knowledge of networking equipment.
6Warmsource boilers require no programming or
commissioning, and water temperatures are
calibrated using our Indoor Reset algorithm.
7DO NOT adjust any boiler settings without
consulting Warmboard. Changes made through
the boiler’s LCD screen will impact system
performance and operation.
8When plumbing for the system is complete,
operate WCS in “Construction Mode” (pg. 14).
This feature allows installers to test the boiler
and flow rates, acclimate building products and
provide heat on cold job sites.
9The use of a combustion analyzer is required to
calibrate safe carbon monoxide readings. Failure
to do so could result in injury or death (pg. 14).
10 Disable Construction Mode before installing
actuators, Manifold Controller(s) and thermostats.
WARNING
Breathing Hazard – Carbon Monoxide Gas
Breathing carbon monoxide can cause brain damage
or death. Always read and understand instruction manual.
Do not operate heater if ood damaged
Install vent system in accordance with local
codes and manufacturers instructions
Do not place chemical vapor emitting
products near the unit
Per NFPA 720, carbon monoxide detectors
should be installed outside each sleeping area
Never operate the heater unless it is vented
to the outdoors
Analyze the entire vent system to make sure
condensate will not become trapped in a
section of vent pipe and therefore reduce
the open cross sectional area of the vent






Follow all instructions and complete the
Lochnivar Noble registration card.
Review this guide and the supplied working
drawings (including the floor plan dimensions)
DO NOT revise tubing loops or zones without
consulting Warmboard. Field changes will impact
operation of the system.

3
WARMBOARD COMFORT SYSTEM // GAS
WCS is a unique offering that changes many aspects
installers have become accustomed to. Components
are pre-commissioned, temperatures are pre-set,
and network devices are pre-configured; everything
is plug-and-play. Simply follow the instructions in this
guide and the system will work.
Essential Documents
The general contractor is required to manage the
job site with the appropriate trade professionals
involved. It is important to keep Warmboard supplied
documents on site at all times as you will need to
reference them regularly for additional information.
Below is a list of the documents:
f24" x 36" Panel and Tubing Design Documents
(inside the Panel Installation Kit)
f24" x 36" WCS Design Drawings
(inside the Panel Installation Kit)
f24" x 36" WCS Engineered Drawings
(inside the Panel Installation Kit)
fPanel Installation Guide
(inside the Panel Installation Kit)
fTubing & Manifolds Installation Guide
(inside the Tubing and Manifolds Installation Kit)
fLochnivar Noble Manual (included)
Warmboard-S Sequencing
While every project is different, this list can be helpful
when installing Warmboard-S and WCS.
fFoundation and joist
fInstall Warmboard-S
fInstall tubing (some loops before walls) and use the
provided labels to keep track of loops and zones
fFrame walls, roof sheeting
fInstall tubing, manifolds (some loops)
fInstall all 110 volt electrical boxes and outlets
(WCS Design Drawings)
fInstall manifold supply and return distribution
lines (WCS Design Drawings)
fPrepare for Warmsource (PVC venting, gas line,
T&P, condensation line, water line)
fInsulate walls, floors
fDrywall
fInstall Warmsource, then plumb in and fire up
using “Construction Mode”
fTape, texture and paint
fFinish carpentry and all finish floors
fThermostats, Manifolds Controller(s) and actuators
Warmboard-R Sequencing
While every project is different, this list can be helpful
when installing Warmboard-R and WCS.
fEnsure existing subfloor or slab is level, flat and
100% dried in
fInstall Warmboard-R
fInstall manifolds, tubing; use the provided labels to
keep track of loops and zones
fInstall all 110 volt electrical boxes and outlets
(WCS Design Drawings)
fInstall manifold supply and return distribution
lines (WCS Design Drawings)
fPrepare for Warmsource (PVC venting, gas line,
T&P, condensation line, water line)
fInsulate walls, floors
fDrywall
fInstall Warmsource, then plumb in and fire up
using “Construction Mode”
fTape, texture and paint
fFinish carpentry and all finish floors
fThermostats, Manifolds Controller(s) and actuators
WCS PREPARATION

4
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Included, Pre-Plumbed
The following components are pre-plumbed inside
the Warmsource unit:
fAutomatic air vent
fTemperature and pressure (T&P) relief valve
fExpansion tank (preset at 15 PSI, can be reset with
a bike pump and ball valve in the closed position)
fGrundfos primary circulator
fGrundfos constant pressure secondary circulator
Included, Not Pre-Plumbed
The following are included with Warmsource
but NOT pre-plumbed. Refer to the WCS Design
Drawings for location and pipe sizing:
fPressure reducing valve (maintains a constant
water pressure of 12-18 PSI, and adds “make up”
water for evaporation)
fBackflow preventer (required by code in many
jurisdictions, it prevents water in the closed-loop
system from mixing with the domestic water)
f11/4" combo ball valve/hose bib
fSeveral smaller combo valves, for easy air purging
(be sure to install in the correct location and water
flow direction)
WCS Design Drawings
Our WCS Design Drawings list all the necessary
plumbing and mechanical materials. Reference this
document regularly. Before proceeding, all boiler
components must be pre-plumbed per the Lochnivar
Noble Manual, including:
fPVC intake and exhaust venting (pg. 14-32)
fGas (pg. 50-53) and condensation line (pg. 58)
fPressure relief valve discharge (pg. 34)
f
1/2" cold water line from the domestic water
supply to the pressure reducing valve
(WCS Design Drawings)
PLUMBING AND MECHANICAL

5
WARMBOARD COMFORT SYSTEM // GAS
WARMSOURCE SPECIFICATION
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
23/4"
91/4"
113/4"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
23/4"
91/4"
113/4"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
23/4"
91/4"
113/4"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
Side View: 80K Side View: 110K, 150K, 199KFront View

6
1.800.556.0595
for assistance
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
23/4"
91/4"
113/4"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
23/4"
91/4"
113/4"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
23/4"
91/4"
113/4"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
23/4"
91/4"
113/4"
121/2"
151/4"
2
1
/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
Bottom View: 80K
Top View: 80K
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
23/4"
91/4"
113/4"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
Bottom View: 110K, 150K, 199K
Top View: 110K
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
2
3
/4"
91/4"
113/4"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
Top View: 199K
Top View: 150K

7
WARMBOARD COMFORT SYSTEM // GAS
WARMSOURCE PREPARATION
Install Location
Like all gas-fired boilers, Warmsource makes some
noise and may be disruptive if installed near a
bedroom or common living space. Garages and
basements are the better choice. See the Lochnivar
Noble Manual (pg. 7-11) for additional requirements.
Use of a drain pan is recommended.
Installing Distribution Lines
After the tubing and manifolds, install the manifold
distribution lines. Sizing, layout and length of the
piping can be found in the WCS Design Drawings.
fPressure test all distribution lines for 15 minutes
at 100 PSI (International Mechanical Code,
section 1208.1)
Minimum Clearances
This illustration shows the recommended minimum
dimensions for the Warmsource mechanical area.
This image also depicts the space necessary for
piping and mechanical components. The minimum
depth is 40" for access and serviceability.
Electrical Requirements
fWarmsource boiler: 160W
• Warmsource pump: 30-165W (varies by heat load)
• Smart Reset Controller (SRC): 20W
(own 110V GFI outlet required for Warmsource unit)
fManifold Controller (MC): 10W per loop
(each requires own 110V GFI outlet)
fThermostat: 5W each
(each requires own 110V J-Box)
80K
80K
199K
23/4"
5"
9"
110K
23/4"
15"
121/2"
150K
23/4"
91/4"
113/4"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
21/4"
151/2"
Pressure
Relief
Valve
Mounting
Bracket
Air
Vent
Air Exhaust
Air Intake
Condensate
(left / right)
Gas
(left / right)
Supply (back)
Return (front)
9"
43/8"
3"
48"
9"
43/8"
3"
48"
11/2"
2"
121/4"
2"
51/2"
91/4"
110K, 150K, 199K
171/2"
11/2"
41/4"
81/2"
163/4"
281/2"
33"
27"
33"
18"
48"
12"
* 29” width recommended for boiler only
46” width recommended when including distribution lines
6+"6+"
29"*
46"*
Install the Warmboard-supplied ball valves and
hose bibs as shown in our Design Drawings
for the proper filling and purging of air from
the system.
Pre-plumb boiler components prior to drywall.
Reference page 4 of this guide.
Warmsource dimensions:
17W x 48H x 16
3/4D (80K),
17W x 48H x 17 1/2D (110K, 150K, 199K)
To estimate labor costs, view the boiler page
in the WCS Design Drawings to see how the
manifold distribution lines should be plumbed.

8
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WARMSOURCE INSTALLATION
Securing Warmsource
fDouble check code clearances and recommended
minimum clearance dimensions (pg. 7)
fFasten the mounting bracket to the wall (the use
of two, 2"x 4" x 18" wood sleepers may be necessary.
Securely fasten the sleepers to the wall studs,
then mount the bracket to the sleepers)
fOnce the bracket is secured, use the lifting handles
to place Warmsource on to the mounting bracket
(the unit is very heavy and requires two individuals
to move safely)
Connections
fConnect the PVC intake and exhaust lines, gas line,
condensation discharge line and pressure relief
discharge line per the Lochnivar Noble Manual
fPlumb the cold water line to the backflow
preventer and the pressure reducing valve
(WCS Design Drawings)
fInstall all 1 1/4" copper plumbing and primary
distribution lines
fInstall the condensate neutralizer (Lochnivar Noble
Manual, pg. 58). If installing vertically instead
of horizontally be sure to confirm the correct
orientation (illustration)
To Warmsource
Water Flow
Condensate Drain
To Drain
Overflow Bypass
Warmsource is very heavy and will require two
people to lift and carry.

9
WARMBOARD COMFORT SYSTEM // GAS
WARMSOURCE FLEX
SPECIFICATION
48” (min) width recommended when including distribution lines
Maximum space between both units is not to exceed 48”
Mounting
Bracket
43/8"
80K 80K
199K
23/4"
5"
9"
110K
23/4"
15"
150K
23/4"
91/4"
113/4"
18"18" 18"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
17"
21/4"
151/2"
11/2"
41/4"
81/2"
151/2"
43/4"
81/2"
17
17"
Pressure
Relief Valve
Air Vent
Air Exhaust
Air Intake
Condensate
Gas
1-11/4” Copper
(field supplied)
9"
17"
24"
2"
48”
Boiler Warmsource
18”
24”
12”
Supply (back)
Return (front)
43/4"
81/2"
17"
17"
48” (min) width recommended when including distribution lines
Maximum space between both units is not to exceed 48”
Mounting
Bracket
43/8"
80K 80K
199K
23/4"
5"
9"
110K
23/4"
15"
150K
23/4"
91/4"
113/4"
18"18" 18"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
17"
21/4"
151/2"
11/2"
41/4"
81/2"
151/2"
43/4"
81/2"
17
17"
Pressure
Relief Valve
Air Vent
Air Exhaust
Air Intake
Condensate
Gas
1-11/4” Copper
(field supplied)
9"
17"
24"
2"
48”
Boiler Warmsource
18”
24”
12”
Supply (back)
Return (front)
43/4"
81/2"
17"
17"
Side View: 80KFront View Bottom View:
48” (min) width recommended when including distribution lines
Maximum space between both units is not to exceed 48”
Mounting
Bracket
43/8"
80K 80K
199K
23/4"
5"
9"
110K
23/4"
15"
150K
23/4"
91/4"
113/4"
18"18" 18"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
17"
21/4"
151/2"
11/2"
41/4"
81/2"
151/2"
43/4"
81/2"
17
17"
Pressure
Relief Valve
Air Vent
Air Exhaust
Air Intake
Condensate
Gas
1-11/4” Copper
(field supplied)
9"
17"
24"
2"
48”
Boiler Warmsource
18”
24”
12”
Supply (back)
Return (front)
43/4"
81/2"
17"
17"

10
1.800.556.0595
for assistance
48” (min) width recommended when including distribution lines
Maximum space between both units is not to exceed 48”
Mounting
Bracket
43/8"
80K 80K
199K
23/4"
5"
9"
110K
23/4"
15"
150K
23/4"
91/4"
113/4"
18"18" 18"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
17"
21/4"
151/2"
11/2"
41/4"
81/2"
151/2"
43/4"
81/2"
17
17"
Pressure
Relief Valve
Air Vent
Air Exhaust
Air Intake
Condensate
Gas
1-11/4” Copper
(field supplied)
9"
17"
24"
2"
48”
Boiler Warmsource
18”
24”
12”
Supply (back)
Return (front)
43/4"
81/2"
17"
17"
48” (min) width recommended when including distribution lines
Maximum space between both units is not to exceed 48”
Mounting
Bracket
43/8"
80K 80K
199K
23/4"
5"
9"
110K
23/4"
15"
150K
23/4"
91/4"
113/4"
18"
18" 18"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
17"
21/4"
151/2"
11/2"
41/4"
81/2"
151/2"
43/4"
81/2"
17
17"
Pressure
Relief Valve
Air Vent
Air Exhaust
Air Intake
Condensate
Gas
1-11/4” Copper
(field supplied)
9"
17"
24"
2"
48”
Boiler Warmsource
18”
24”
12”
Supply (back)
Return (front)
43/4"
81/2"
17"
17"
48” (min) width recommended when including distribution lines
Maximum space between both units is not to exceed 48”
Mounting
Bracket
43/8"
80K 80K
199K
2
3
/4"
5"
9"
110K
23/4"
15"
150K
23/4"
91/4"
113/4"
18"
18"
18"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
17"
21/4"
151/2"
11/2"
41/4"
81/2"
151/2"
43/4"
81/2"
17
17"
Pressure
Relief Valve
Air Vent
Air Exhaust
Air Intake
Condensate
Gas
1-11/4” Copper
(field supplied)
9"
17"
24"
2"
48”
Boiler Warmsource
18”
24”
12”
Supply (back)
Return (front)
43/4"
81/2"
17"
17"
48” (min) width recommended when including distribution lines
Maximum space between both units is not to exceed 48”
Mounting
Bracket
43/8"
80K 80K
199K
23/4"
5"
9"
110K
23/4"
15"
150K
23/4"
91/4"
113/4"
18"18"
18"
121/2"
151/4"
2
1/
2"
91/4"
111/4"
13"
16"
5"
81/2"
17"
21/4"
151/2"
11/2"
41/4"
81/2"
151/2"
43/4"
81/2"
17
17"
Pressure
Relief Valve
Air Vent
Air Exhaust
Air Intake
Condensate
Gas
1-11/4” Copper
(field supplied)
9"
17"
24"
2"
48”
Boiler Warmsource
18”
24”
12”
Supply (back)
Return (front)
43/4"
81/2"
17"
17"
48” (min) width recommended when including distribution lines
Maximum space between both units is not to exceed 48”
Mounting
Bracket
43/8"
80K 80K
199K
23/4"
5"
9"
110K
23/4"
15"
150K
23/4"
91/4"
113/4"
18"18" 18"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
17"
21/4"
151/2"
11/2"
41/4"
81/2"
151/2"
43/4"
81/2"
17
17"
Pressure
Relief Valve
Air Vent
Air Exhaust
Air Intake
Condensate
Gas
1-11/4” Copper
(field supplied)
9"
17"
24"
2"
48”
Boiler Warmsource
18”
24”
12”
Supply (back)
Return (front)
43/4"
81/2"
17"
17"
Top View: Top View: 80K Top View: 150K
Top View: 110K Top View: 199K

11
WARMBOARD COMFORT SYSTEM // GAS
WARMSOURCE FLEX
PREPARATION
Install Location
Like all gas-fired boilers, Warmsource makes some
noise and may be disruptive if installed near a
bedroom or common living space. Garages and
basements are the better choice. See the Lochnivar
Noble Manual (pg. 7-11) for additional requirements.
Use of a drain pan is recommended.
Installing Distribution Lines
After the tubing and manifolds, install the manifold
distribution lines. Sizing, layout and length of the
piping can be found in the WCS Design Drawings.
fPressure test all distribution lines for 15 minutes
at 100 PSI (International Mechanical Code,
section 1208.1)
Minimum Clearances
This illustration shows the recommended minimum
dimensions for the Warmsource mechanical area.
This image also depicts the space necessary for
piping and mechanical components. The minimum
depth is 40" for access and serviceability.
Electrical Requirements
fWarmsource boiler: 160W
• Warmsource pump: 30-165W (varies by heat load)
• Smart Reset Controller (SRC): 20W
(own 110V GFI outlet required for Warmsource unit)
fManifold Controller (MC): 10W per loop
(each requires own 110V GFI outlet)
fThermostat: 5W each
(each requires own 110V J-Box)
48” (min) width recommended when including distribution lines
Maximum space between both units is not to exceed 48”
Mounting
Bracket
43/8"
80K 80K
199K
23/4"
5"
9"
110K
23/4"
15"
150K
23/4"
91/4"
113/4"
18"18" 18"
121/2"
151/4"
21/2"
91/4"
111/4"
13"
16"
5"
81/2"
17"
21/4"
151/2"
11/2"
41/4"
81/2"
151/2"
43/4"
81/2"
17
17"
Pressure
Relief Valve
Air Vent
Air Exhaust
Air Intake
Condensate
Gas
1-11/4” Copper
(field supplied)
9"
17"
24"
2"
48”
Boiler Warmsource
18”
24”
12”
Supply (back)
Return (front)
43/4"
81/2"
17"
17"
Install the Warmboard-supplied ball valves and
hose bibs as shown in our Design Drawings
for the proper filling and purging of air from
the system.
Pre-plumb boiler components prior to drywall.
Reference page 4 of this guide.
Warmsource Flex dimensions:
80K: 17W x 24H x 17D ea.
110,150,199K: 17W x 24H x 17D, 17W x 24H x 18D
To estimate labor costs, view the boiler page
in the WCS Design Drawings to see how the
manifold distribution lines should be plumbed.

12
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WARMSOURCE FLEX
INSTALLATION
Securing Warmsource
fDouble check code clearances and recommended
minimum clearance dimensions (pg. 11)
fFasten the mounting brackets to the wall (the use
of two, 2"x 4" x 18" wood sleepers may be necessary.
Securely fasten the sleepers to the wall studs,
then mount the bracket to the sleepers)
fOnce the bracket is secured, hang both units on the
wall and secure from below
Connections
fConnect the PVC intake and exhaust lines, gas line,
condensation discharge line and pressure relief
discharge line per the Lochnivar Noble Manual
fPlumb the cold water line to the backflow
preventer and the pressure reducing valve
(WCS Design Drawings)
fPlumb Warmsource Flex to the boiler through
the 1
1/4" supply and return copper connections
(boiler fitting is 1" sweat)
fInstall all 1 1/4" copper plumbing and primary
distribution lines
fInstall the condensate neutralizer (Lochnivar Noble
Manual, pg. 58). If installing vertically instead
of horizontally be sure to confirm the correct
orientation (illustration)
fPlug the 110 volt plug from the boiler into the SRC
port labeled “Boiler Power”. Plug the boiler control
cable into the port labeled “Boiler” (image)
To Warmsource
Water Flow
Condensate Drain
To Drain
Overflow Bypass

13
WARMBOARD COMFORT SYSTEM // GAS
Once the system is plumbed and pressure tested with
air (T&M Installation Guide), the next step is to fill the
system with water and purge the air in the lines.
Air in a closed loop heating system can create noise
and inhibit the flow of water. Follow these steps to
save hours or days of frustration.
Purge Air, Fill with Water
Follow these steps to fill and purge air the system.
This should be done one manifold at a time. In this
example, we’ll begin with Manifold 1 (illustration).
fThread a discharge hose on to valve A,
and ensure the other end of the hose reaches
the exterior of the house (or drain)
fOn valve A, make sure the ball valve is closed
and the hose bib is open
fClose all hose bibs and ball valves on
the remaining manifold return lines (B, C)
fOn the supply side, close the hose bib
and open ball valve D
fTo fill Warmsource and the Manifold 1 loops
with water (city or well supply), lift the fast fill lever
on the pressure reducing valve E
fCheck each loop flow meter on Manifold 1 and
confirm good flow is taking place. You may need to
open the loop flow restrictors (pg. 14, step 4)
fContinue filling the system with water for 10–15
minutes until air cannot be seen or heard escaping
the hose
fClose the fast fill lever, then slowly close hose bib A
fManifold 1 is now complete. Repeat this process for
each manifold (B, C)
fOnce complete, ensure the pressure gauge located
inside Warmsource reads 12–18 PSI
Propylene Glycol
In some situations, it may be necessary to add
propylene glycol to prevent freezing. To do this,
open ball valve Dand add via the hose bib.
Use the manufacturer’s recommendation for the
correct mix (generally 10-30%). ONLY use propylene
glycol for freeze protection.
To fill the system with a propylene glycol/water
solution, we recommend a Liberty 331 Portable
Transfer Pump, or equivalent (homedepot.com).
To maintain the propylene glycol feed for many years,
we recommend the Axiom MF200 Pressure Pal.
FILLING & PURGING
Reference the Lochnivar Noble Manual (pg. 59)
for allowable mineral levels and quality of the
water. Filtered water or a corrosion inhibitor may
be required.
D
*Size according on WCS Design Drawings
A
B
C
D
E
F
G
3/4" Combo ball valve/hose bib*
3/4" Combo ball valve/hose bib*
3/4" Combo ball valve/hose bib*
1 1/4" Combo ball valve/hose bib
Fast fill lever/pressure reducing valve
Backflow preventer
1/2" ball valve
C
A
B
E F G
Manifold 1
Manifold 2
Manifold 3
Manifold 1
Manifold 3
Manifold 2
SUPPLY
RETURN

14
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CONSTRUCTION MODE
Once the system is properly filled, use “Construction
Mode” to heat the structure before thermostats,
MC(s) or actuators are installed. Construction Mode
offers the opportunity to:
fListen for air noises while confirming flow rates and
water temperatures
fHeat an active job site and hasten the release of
moisture from building materials (paint, plaster,
hardwood flooring and other wood materials)
Before firing boiler, ensure the gas switch is set to
ON (image) and perform final checks as noted
in Lochnivar Noble Manual (pg. 62-63)
fStep 1: Remove the cover from Warmsource
fStep 2: Locate the Smart Reset Controller (SRC),
then plug the Construction Mode jumper into
the “Sensor 2” terminal. Use the white jumper
for 100˚F water, the red jumper for 120˚F
fStep 3: Plug Warmsource into the 110 volt outlet and
confirm the system is ON by viewing the LCD screen
on the front of the unit (Warmsource will reach the
target temperature in about 10 minutes)
fStep 4: Return to each manifold and adjust the flow
rates of each loop
1Unthread (and discard) the white caps from
the return side of the manifold
2Remove the red caps on the supply side and
adjust the black knobs beneath. Flow rates for
each loop should be equal to, or greater than,
those noted in the WCS Design Drawings.
When done, replace the red caps
It is required to use a Combustion Analyzer while in
Construction Mode to verify, and adjust, the carbon
monoxide output. Values MUST match those listed
in the Lochnivar Noble Manual (pg. 67, table 10A).
Failure to do so could result in injury or death.
Warmsource is pre-set at our factory to maintain
proper temperature control and operation.
DO NOT adjust.
Purge all air from the gas line before firing.
You MUST use a Combustion Analyzer while in
Construction Mode.
DO NOT use Construction Mode after actuators
have been installed.
Connect Warmsource to an appliance timer to
limit the hours the system runs in Construction
Mode and reduce energy use. Be sure to remove
before installing thermostats and actuators.

15
WARMBOARD COMFORT SYSTEM // GAS
MANIFOLD CABINET
Preparation
Before installing the controls, an electrician MUST
review the electrical page of your WCS Design
Drawings and note necessary materials, locations,
voltage and amperage of all electrical components.
Tubing and Labeling
Included with your controls is a series of labels to
adhere to each supply and return loop beneath the
manifold. Appropriate use of these labels will ensure
each loop is accurately labeled for diagnostic issues.
These color-coded labels coincide with the color
labels on the side of the Manifold Controller (MC)
and those displayed in your WCS Design Drawings.
Controls
Warmboard Controls consist of the following:
f110 volt thermostats (one per heating zone)
f110 volt Manifold Controller (one per manifold)
f24 volt solenoid valve loop actuators
(one per loop, powered by the MC)
fSmart Reset Controller (inside Warmsource)
Installing the MC
fUse the provided screws to mount each Manifold
Controller (MC) inside the manifold cabinet specified
by the WCS Design Drawings
fPlug the MC into the nearby 110 volt outlet
Installing the Actuators
fAttach actuators to each port on the return manifold
fConnect each actuator wire to the appropriate port
on the side of the MC, which is pre-labeled and color
coded. Refer to the WCS Design Drawings as needed
Before installing the controls, you MUST disable
Construction Mode by removing the jumper on
the SRC.

16
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T H ERMOSTAT S
Warmboard Comfort System offers 3 different types
of thermostats:
fHeating
Controls the heat in one zone of the house
fCooling/Heating
Controls one cooling zone and one heating zone
(limit 2 per Warmsource)
fFloor Warming/Heating
Controls the heat in one bathroom and offers a
warming feature which keeps the floor warm even
when heat is not called for (can be enabled/disabled
by the homeowner)
Thermostat Installation
Every thermostat MUST be installed in the location
specified in the WCS Design Drawings. Failure to
do so will cause the system to behave inaccurately.
If there are any discrepancies regarding the
thermostat or zoning, contact us immediately.
fRemove the appropriate thermostat from the box
fGrip the “face” of the thermostat on the sides with
one hand, and the back of the thermostat with the
other hand, then slowly separate the pieces
fSet the face to the side
fConnect the hot and neutral (black and white) wires
from the back piece to the connections in the junction
box, then fasten into place with the provided screws
– be sure the arrows point “up” (photo)
fSnap the face plate back into place
fRepeat for each thermostat, always checking to
make sure they are installed in the correct location
After texture and paint, each thermostat MUST
be installed in the correct location in order for the
system to perform properly.

17
WARMBOARD COMFORT SYSTEM // GAS
AIR CONDITIONING
AC Installation
Warmboard thermostats offer single-stage air
conditioning control. Connecting an AC system to
WCS is very similar to wiring a 24v thermostat from
an AC unit, just follow the steps below.
fRemove the front cover from Warmsource
fLocate terminal connection “AC1/Fan” on the Smart
Reset Controller (SRC)
fConnect the wires from the AC unit to the terminal
block accordingly:
RC: 24v power (red wire)
Y: Cooling Call (yellow wire)
G: Fan (green wire)
fTo activate the “Fan Only” feature, use a small jumper
wire between the two RC ports on the terminal block
fRepeat for “AC2/Fan” if using air conditioning across
two cooling zones
Some AC solutions require their own proprietary
controls. In these instances, our thermostats
CANNOT be used to control the cooling.

18
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TESTING THE SYSTEM
Prior Steps
It is imperative that all previous tasks have been
completed before testing or operating the system.
fUse of Construction Mode to test the boiler and flow
rates on each loop
fDisable Construction Mode by removing the jumper
from the appropriate sensor port
fSuccessful installation of all electrical components
(Manifold Controllers, actuators, thermostats)
Once these steps have been completed sequentially,
proceed to the next steps.
Testing the Controls
With all components installed, it’s time to test each
zone independently to ensure the thermostats are
accurately controlling each zone.
To begin, go to the Zone 1 thermostat, then follow
the instructions below.
fTap the thermostat screen
fNext, tap the button in the lower right corner
and choose “Tutorial” to familiarize yourself with
the controls
fOnce complete, go to “Settings” then ”Support”
and tap ”Test Zone”
fGo to the manifold cabinet for this zone. On the
Manifold Controller you will see a green light on the
loops requesting a call for heat
fAfter 5 minutes, the green lights will turn blue,
indicating that the actuators have opened and water
is flowing to the zone
fIf something does not appear to be working properly,
consult your Warmboard Engineered Drawings
fAfter 15 minutes, the test will end
fRepeat this process for each thermostat
Final Checklist
fA flame icon will appear on the thermostat when
there is a call for heat. It will take 5-7 minutes for the
boiler and pump(s) to receive this signal and fire up
fWhen receiving a call for heat, lights on the pump(s)
will engage and water will begin to circulate.
If not, reference the pump installation manual
fWhen there is a call for heat, water temperatures on
the boiler LCD should read between 90–140˚F
fMatch the specifications in the Warmboard Design
Drawings for each loop and zone to ensure the
system operates smoothly
fConfirm the Warmboard-supplied tubing labels are
adhered to each loop to accurately identify each loop
and zone from inside the manifold cabinet
NOTE: Warmboard thermostats have an “Off”
setting of 55˚F for freeze protection.
Make sure all supply and return tubing labels
have been affixed to the appropriate loop at the
manifold location.
After a zone calls for heat, the actuators will
take approximately 5 minutes to open and begin
heat flow.

NOTICE: Customer is solely responsible for determining whether the prod-
ucts and the information contained in this installation guide are appropriate
for Customer’s use and are in compliance with applicable laws because the
applicable laws related to the installation and use of this product may vary
from one location to another and may change with time. Customer rep-
resents and warrants that Customer is required to check current local laws,
building codes and other local requirements and that all local requirements
will be adhered to in connection with the installation of this product.
NO EXPRESS WARRANTIES ARE GIVEN EXCEPT FOR ANY APPLICABLE
WRITTEN WARRANTIES SPECIFICALLY PROVIDED BY WARMBOARD. ALL
IMPLIED WARRANTIES INCLUDING THOSE OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE ARE EXPRESSLY EXCLUDED.
FAILURE TO INSTALL WARMBOARD PRODUCTS ACCORDING TO MANU-
FACTURER’S INSTRUCTIONS WILL VOID ALL APPLICABLE WARRANTIES.
IT IS EXPRESSLY UNDERSTOOD THAT WARMBOARD IS NOT RESPONSI-
BLE FOR ANY CONSEQUENTIAL OR OTHER DAMAGES THAT MAY ARISE
FROM USING WARMBOARD PRODUCTS OR COMPONENTS.
Warmboard assumes no obligation or liability for the information contained
in this document. The Customer assumes all risks as to the use of this
product. Customer’s exclusive remedy or any claim (including any claim
for negligence, strict liability, or tort, without limitation) shall be limited
to the warranty coverage expressly provided in Warmboard’s warranty
documents. Failure to stringently adhere to any of the recommended pro-
cedures of this installation guide and/or any other Warmboard document
related to this product shall release Warmboard of all liability with respect
to this product or the use thereof.
For complete warranty information please call 1.800.556.0595
or visit warmboard.com
KEEP OUT OF REACH OF CHILDREN