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Part number 550-142-054/0411
101
GV90+ gas-fired water boiler — Boiler Manual
Figure 108 Boiler dimensional and physical data (see Figure 107, page 100)
Boiler
model
Supply
Return
Length
L
Gas
connection
size
(Note 1)
Electrical
service
required
(includes
the internal
circulators)
Boiler
water
content
Approx.
shipping
weight
(inches NPT
male)
(inches NPT
female)
(inches) (inches NPT
female)
(amperes) (gallons) (pounds)
GV90+3
1 1 30¾ ½ 15 3.8 313
GV90+4
1 1 30¾ ½ 15 4.7 353
GV90+5
1 1 37¾ ½ 15 6.0 423
GV90+6
1 1 37¾ ½ 15 6.9 464
Note 1: Gas piping from meter to boiler to be sized per local utility requirements.
Figure 109 Boiler ratings
DOE
Boiler
model
CSA
Input
DOE
Heating
capacity
(Note 1)
Net I=B=R
water
rating
(Note 2)
AFUE
(Note 1)
Vent/
combustion
air diameter
Boiler
water
content
% Input derate vs vent length
(Values shown are at maximum vent/air pipe length)
(Note 3)
Direct Exhaust Venting Direct Vent Venting
MBH MBH MBH % Inches Gallons Natural gas Propane Natural gas Propane
GV90+3
70 65 56 91.9
3" PVC 3.8
up to 0.7% up to 1.4% up to 1.5% up to 2.8%
GV90+4
105 97 84 91.2
3" PVC 4.7
up to 1.0% up to 2.2% up to 4.0% up to 5.4%
GV90+5
140 130 113 91.4
3" PVC 6.0
up to 4.0% up to 4.0% up to 7.0% up to 8.0%
GV90+6
175 161 140 91.0
3" PVC 6.9
up to 4.0% up to 4.5% up to 7.0% up to 10.0%
Notes:
1. Based on standard test procedures prescribed by the United States Department of Energy. Ratings also
referred to as CSA Output. NOTE that only DOE Heating Capacity and AFUE are certified by AHRI. AFUE is
also know as Annual Fuel Utilization Efficiency or Seasonal Efficiency.
2. Net I=B=R ratings are based on net installed radiation of sufficient quantity for the requirements of the building
and nothing need be added for normal piping and pickup. Ratings are based on a piping and pickup allowance
of 1.15 and are determined under the provisions governing forced draft boiler-burner units. An additional
allowance should be made for unusual piping and pickup loads.
3. All of the boilers will automatically de-rate as vent length increases, due to the pressure loss through the vent.
For vent/air pipe lengths less than the maximum, the derate equals the value above times vent length ÷ 100.
4. Boilers are tested for 50 PSIG working pressure.
5. GV90+ boilers are not available for millivolt systems.
Dimensions and ratings (continued)